CN110500264B - Using method of long-plunger sand-prevention long oil well pump with sand blocking liquid passing device - Google Patents
Using method of long-plunger sand-prevention long oil well pump with sand blocking liquid passing device Download PDFInfo
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- CN110500264B CN110500264B CN201910784937.5A CN201910784937A CN110500264B CN 110500264 B CN110500264 B CN 110500264B CN 201910784937 A CN201910784937 A CN 201910784937A CN 110500264 B CN110500264 B CN 110500264B
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- 239000004576 sand Substances 0.000 title claims abstract description 277
- 239000007788 liquid Substances 0.000 title claims abstract description 232
- 230000000903 blocking effect Effects 0.000 title claims abstract description 139
- 239000003129 oil well Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims description 24
- 230000000630 rising effect Effects 0.000 claims description 16
- 238000005086 pumping Methods 0.000 claims description 14
- 230000009471 action Effects 0.000 claims description 13
- 230000005484 gravity Effects 0.000 claims description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 3
- 230000002265 prevention Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 80
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000012530 fluid Substances 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/38—Arrangements for separating materials produced by the well in the well
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
- F04B47/005—Sand trap arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention relates to a use method of a long-plunger sand-prevention long oil well pump with a sand blocking liquid passing device. The technical scheme is as follows: the lower extreme of standing valve connects and hinders sand and lead to the liquid ware, the upper end of hindering sand and leading to the outer barrel of liquid ware is equipped with the top connection, the first interior cone nut of lower extreme inner wall installation of outer barrel, the inner chamber of outer barrel is by being equipped with in proper order down to last and hinders sand and lead to the liquid circulation board, hinder sand and lead to the liquid reflecting plate, hinder sand and lead to liquid collecting plate and booster, the feed liquor hole with hinder sand and lead to the liquid reflecting plate and mutually correspond, the booster is equipped with the bell mouth, liquid leads to the liquid circulation board through hindering sand and leads to the liquid reflecting plate through hindering sand and carry out the first order and hinder sand, liquid leads to the liquid reflecting plate flow direction through hindering sand through the liquid collecting plate and realizes that the second grade hinders sand, liquid is through the pressure that improves liquid again. The beneficial effects are that: the sand blocking and liquid passing reflecting plate and the sand blocking and liquid passing collecting plate can completely realize the blocking of sand, thereby realizing good sand prevention effect and achieving the purpose of prolonging the pump effect.
Description
Technical Field
The invention relates to a sand prevention device and a method for an oil well pump in the petroleum industry, in particular to a use method of a long-plunger sand prevention long oil well pump with a sand blocking liquid passing device.
Background
At present, in oil exploitation, under the influence of a complex geological structure, oil wells containing fine silt in oil liquid generally exist in oil fields all over the country, and when conventional oil well pumps are used in the oil wells for production, oil well pumps with long plungers are generally adopted, but the defects of sand blocking, low pump efficiency and the like often occur, so that the oil well pumps fail early, the production of the oil wells is stopped, the operation is frequent, and the production cost of crude oil is increased.
The invention discloses a Chinese patent document with the publication number of 102146911A and the patent name of 'a long plunger sand-proof oil-well pump', which is provided with a pump cylinder, a fixed valve connected with the end of the pump cylinder, a plunger in the pump cylinder, an upstream movable valve connected with the upper end of the plunger and a downstream movable valve connected with the lower end of the plunger. The plunger of the invention is a long plunger, and the length of the long plunger is greater than that of the integral pump cylinder. The downstream dynamic valve is arranged on the inner side of the lower end of the long plunger, and a positioning claw is arranged above the downstream dynamic valve. When the oil well pump works, the long plunger always exceeds the outside of the pump barrel, the long plunger blocks sand grains, the sand grains are not easy to enter the pump barrel, and the sand grains are deposited downwards along the annular cavity into the two-way sand setting pipe.
In addition, the chinese patent publication No. 204805078U, entitled "a long plunger sand prevention oil well pump", has an oil outlet valve mounted at the upper end of the long plunger assembly, a pump barrel assembly disposed outside the long plunger assembly, and a sand settling outer tube disposed outside the pump barrel assembly; the bleeder is installed to long plunger assembly lower extreme, and bleeder inside is provided with the traveling valve, and the standing valve assembly is installed to the bleeder lower extreme. The method is suitable for oil wells with sand content less than 0.8 percent and is mainly used for oil extraction operation in oil wells with large sand production, a pump cylinder assembly and a long plunger assembly structure with ideal sand prevention effect are adopted, and a sand settling outer tube is additionally arranged, so that the oil well pump can well block part of sand carried by crude oil out of the pump cylinder assembly in the pumping process, and meanwhile, due to the action of the gravity of the sand, the sand is settled in an annular space between the pump cylinder assembly and the presentation outer tube, and the method can realize the sand prevention to a certain degree.
The invention adopts the additional arrangement of the sand blocking liquid passing device and the sand setting cavity to reduce the probability of sand entering the pump barrel and improve the service life of the long-plunger oil well pump.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a using method of a long-plunger sand-prevention long oil well pump with a sand blocking and liquid passing device, which can realize multi-stage sand blocking, thereby greatly reducing sand in oil and greatly prolonging the service life of the device.
The invention provides a using method of a long-plunger sand-prevention long oil well pump with a sand blocking liquid passing device, which comprises the following steps:
firstly, assembling a sand blocking and liquid passing device, screwing a supercharger (7.2) into an inner cavity of an outer cylinder body (7.6), and screwing and fixing a sand blocking and liquid passing collecting plate (7.3) below the supercharger (7.2) by a third inner cone screw cap (7.9); then, fixing a sand-blocking liquid-passing reflecting plate (7.4) below a third inner cone nut (7.9) through a second inner cone nut (7.8); then fixing a sand-blocking liquid-passing circulating plate (7.5) below a second inner cone screw cap (7.8) through a first inner cone screw cap (7.7) to complete the assembly of the sand-blocking liquid-passing device;
secondly, assembling a long-plunger sand-prevention long oil well pump, movably connecting the assembled sand-prevention liquid-passing device to the lower end of a fixed valve (6) through an upper connector (7.1), installing a fixed valve ball (12) on a valve seat of the fixed valve (6), and movably connecting the upper end of the fixed valve (6) to the lower end of a pump barrel (3); then, inserting a long plunger (4) provided with an upstream movable valve (10) and a downstream movable valve (11) into the pump cylinder (3) to complete the assembly of the long plunger sand-prevention long oil well pump; then the pump cylinder (3), the connecting pipe (5), the fixed valve (6) and the sand blocking liquid passing device (7) are put into the bottom of an oil well casing (8) through the oil production pipe column (2) and are close to an artificial well bottom (9); the upper end of the long plunger (4) is connected with the lower end of the sucker rod (1);
thirdly, the pumping unit through the well head drives the pumping rod (1) to move up and down, when the pumping rod (1) drives the long plunger (4) to move up, the fixed valve ball (12) rises upwards, the oil well casing (8) and the sand-containing oil at the artificial well bottom (9) sequentially pass through the sand-blocking liquid-passing circulation plate (7.5), the sand-blocking liquid-passing reflection plate (7.4), the sand-blocking liquid-passing collection plate (7.3) and the supercharger (7.2) of the sand-blocking liquid-passing device (7), after multiple times of collision and sand blocking, the oil moves up through a liquid inlet channel formed after the fixed valve ball (12) rises, and the oil is lifted up to the well head along the oil pipe through the matching of the long plunger (4), the upstream movable valve (10), the downstream movable valve (11) and the pump barrel (3).
Preferably, in the third step, the specific process of passing the sand-containing oil through the sand blocking liquid passing device (7) is as follows:
before the sand-blocking liquid-passing device starts to work, the whole sand-blocking liquid-passing device (7) is submerged below the liquid level of the sand-containing oil liquid, and the sand content above the sand-containing oil liquid is less because the sand-containing oil liquid is in a static state at first;
a. when the long plunger (4) starts to move upwards:
the valve ball (12) of the fixed valve is opened, and oil in the sand setting cavity (13) below the fixed valve (6) rises along the fixed valve (6) and is smoothly lifted into a cavity formed by the pump barrel (3) and the long plunger (4);
oil in the cavity between the sand blocking and liquid passing collecting plate (7.3) and the sand blocking and liquid passing reflecting plate (7.4) rises along the third liquid inlet hole (7.3.2) of the sand blocking and liquid passing collecting plate (7.3) and is supplemented to the sand setting cavity (13) through the supercharger (7.2);
the sand-containing oil in the cavity between the sand blocking and liquid passing reflecting plate (7.4) and the sand blocking and liquid passing circulating plate (7.5) rises along the second liquid inlet hole (7.4.2) of the sand blocking and liquid passing reflecting plate (7.4), the solid granular sand collides with the circular main body (7.3.1) of the collecting plate of the sand blocking and liquid passing collecting plate (7.3) and moves downwards, and the oil continues to rise along the third liquid inlet hole (7.3.2);
the sand-containing oil below the sand blocking and liquid passing circulation plate (7.5) rises through the sand blocking and liquid passing circulation plate (7.5), and as the sand blocking and liquid passing circulation plate (7.5) is provided with a circle of a plurality of first liquid inlet holes (7.5.2) which are thick at the bottom and thin at the top and a central hole (7.5.3) which is thin at the bottom and thick at the top, the flow rate is increased when the sand-containing oil passes through the first liquid inlet holes (7.5.2) of the outer ring; a reduced flow rate of sand-laden oil through the central aperture (7.5.3); the rising sand-containing oil with the increased flow speed through the first liquid inlet hole (7.5.2) collides with a main body (7.4.1) of a reflecting plate (7.4) for blocking sand and passing through the liquid, and after sand serving as solid particles rebounds, the rising sand-containing oil with the lower flow speed rises through the central hole (7.5.3) collides again and sinks or partially suspends;
b. when the long plunger (4) is reversed and pushed downwards: a valve ball (12) of the fixed valve is sunk and seated on a valve seat, and oil in a cavity formed by the pump cylinder (3) and the long plunger (4) is lifted into the oil production string (2);
if a small amount of sand is contained in the oil liquid of the sand settling cavity (13) positioned below the fixed valve (6), the sand can sink under the action of gravity;
if a small amount of sand is contained in the oil liquid in the inner cavity of the supercharger (7.2), the sand can sink under the action of gravity;
the oil liquid in the cavity between the sand blocking and liquid passing collecting plate (7.3) and the sand blocking and liquid passing reflecting plate (7.4) contains a small amount of sand, the sand can sink under the action of gravity, and the collided sand is driven by the non-rising liquid to sink in an accelerated manner;
the sand-containing oil in the cavity between the sand blocking and liquid passing reflecting plate (7.4) and the sand blocking and liquid passing circulating plate (7.5) is accelerated to sink by the collided sand under the drive of no rising liquid;
the sand-containing oil liquid positioned below the sand blocking liquid circulation plate (7.5) is accelerated to sink by the collided sand under the drive of no rising liquid;
c. when the long plunger (4) moves upwards again, the action of the step a is continuously repeated, the oil liquid in the oil production string (2) is continuously lifted, and the sand blocking liquid passing device realizes multi-stage sand blocking of the oil liquid pumped upwards; in the circulation operation of continuously moving the long plunger (4) upwards and downwards, oil in the well is pumped out to the wellhead little by little.
The invention has the beneficial effects that: the invention adopts the sand blocking liquid passing device, in the process of lifting the sand-containing oil, the solid granular sand generates downward kinetic energy through multiple collisions, and when the long plunger moves downwards, the oil loses the ascending kinetic energy, and then the solid granular sand continues to move downwards to accelerate sinking; the sand blocking and liquid passing reflecting plate and the sand blocking and liquid passing collecting plate can realize multi-stage sand blocking, so that sand in oil is greatly reduced; because the distance between the long plunger and the upward moving is very short, the oil volume which is extracted upwards each time is small and only accounts for one percent to one dozen percent of the volume of the sand setting cavity, therefore, the flow rate of the supplemented oil during the rising is slow, and the sand blocking and liquid passing reflecting plate and the sand blocking and liquid passing collecting plate can completely realize the blocking of sand, thereby realizing good sand prevention effect;
in addition, the sand setting cavity is additionally arranged below the fixed valve, so that a small amount of sand appearing above the valve ball of the fixed valve can conveniently fall into the sand setting cavity, and the aim of prolonging the pump efficiency can be fulfilled.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a half-sectional view of a sand blocking liquid passing device;
FIG. 3 is a schematic structural view of a sand blocking and liquid passing circulation plate;
FIG. 4 is a sectional view of a sand blocking and liquid circulating plate;
FIG. 5 is a schematic structural view of a sand blocking and liquid passing reflecting plate;
FIG. 6 is a sectional view of a sand blocking and liquid passing reflecting plate;
FIG. 7 is a schematic view of the supercharger;
FIG. 8 is a schematic structural view of a sand blocking and liquid passing collecting plate;
FIG. 9 is a cross-sectional view of a sand blocking and fluid passing collection plate;
FIG. 10 is a schematic structural view of embodiment 2 of a sand-blocking liquid-passing device;
in the upper diagram: the system comprises a sucker rod 1, an oil production string 2, a pump barrel 3, a long plunger 4, a connecting pipe 5, a fixed valve 6, a sand blocking liquid dredging device 7, an oil well casing 8, an artificial well bottom 9, an upstream dynamic valve 10, a downstream dynamic valve 11, a fixed valve ball 12 and a sand setting cavity 13;
the sand-blocking and liquid-passing device comprises an upper connector 7.1, a supercharger 7.2, a sand-blocking and liquid-passing collecting plate 7.3, a sand-blocking and liquid-passing reflecting plate 7.4, a sand-blocking and liquid-passing circulating plate 7.5, an outer cylinder body 7.6, a first inner cone screw cap 7.7, a second inner cone screw cap 7.8 and a third inner cone screw cap 7.9; a reflecting plate body 7.4.1 and a second liquid inlet hole 7.4.2.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Referring to fig. 3 to 4, the sand blocking and liquid passing circulation plate 7.5 includes a circular main body 7.5.1, a first liquid inlet 7.5.2, and a central hole 7.5.3, wherein a central hole 7.5.3 is formed at the center of the circular main body 7.5.1, a plurality of first liquid inlet 7.5.2 are formed at the outer ring of the central hole 7.5.3, the first liquid inlet 7.5.2 is a tapered hole with a thick lower part and a thin upper part, and the central hole 7.5.3 is a tapered hole with a thin lower part and a thick upper part.
Referring to the attached drawings 5-6, the sand-blocking liquid-passing reflecting plate 7.4 comprises a reflecting plate main body 7.4.1 and a second liquid inlet hole 7.4.2, wherein the second liquid inlet hole 7.4.2 with a thick lower part and a thin upper part is arranged in the center of the reflecting plate main body 7.4.1.
Referring to the attached drawings 8-9, the sand blocking and liquid passing collecting plate 7.3 comprises a collecting plate circular main body 7.3.1 and third liquid inlet holes 7.3.2, wherein more than four groups of third liquid inlet holes 7.3.2 are arranged on the collecting plate circular main body 7.3.1, and the third liquid inlet holes 7.3.2 are conical holes with thick lower parts and thin upper parts.
Referring to fig. 7, the supercharger 7.2 of the present invention comprises a supercharger main body 7.2.1 and a supercharging hole 7.2.2, wherein the center of the supercharger main body 7.2.1 is provided with a supercharging hole 7.2.2 with a lower thick and an upper thin conical structure.
In addition, the outer diameter of the first inner cone nut 7.7 is cylindrical and is movably connected with the outer cylinder body 7.6 of the sand blocking liquid dredging device 7 through external threads, and the inner wall of the first inner cone nut 7.7 is in an inner cone shape, and the lower opening is thick and the upper opening is thin.
The fixed valve 6 comprises a valve seat, a fixed valve main body and a fixed valve ball 12, wherein the fixed valve main body is a reducing joint with a thin upper end and a thick lower end, the upper end of the reducing joint is connected with the lower end of the pump barrel 3 through an external thread, the lower end of the reducing joint is movably connected with an upper joint 7.1 of a sand blocking liquid through-flowing device 7 through an internal thread, the valve seat is positioned on the lower side of the fixed valve main body, and the fixed valve ball 12 is positioned in a cavity between the valve seat and the upper end of the fixed valve main body. In addition, a sand setting cavity 13 is additionally arranged below the fixed valve 6, so that a small amount of sand appearing above a valve ball of the fixed valve can conveniently fall into the sand setting cavity, and the purpose of prolonging the pump effect can be achieved.
A second inner cone screw cap 7.8 is arranged between the sand blocking and liquid passing reflecting plate 7.4 and the sand blocking and liquid passing circulating plate 7.5, and a third inner cone screw cap 7.9 is arranged between the sand blocking and liquid passing collecting plate 7.3 and the sand blocking and liquid passing reflecting plate 7.4.
The invention provides a using method of a long-plunger sand-prevention long oil well pump with a sand blocking liquid passing device, which comprises the following steps:
firstly, assembling a sand blocking and liquid passing device, screwing a supercharger 7.2 into an inner cavity of an outer cylinder 7.6, and screwing and fixing a sand blocking and liquid passing collecting plate 7.3 below the supercharger 7.2 by using a third inner cone screw cap 7.9; then, a sand blocking and liquid passing reflecting plate 7.4 is fixed below a third inner cone nut 7.9 through a second inner cone nut 7.8; then the sand-blocking liquid-passing circulating plate 7.5 is fixed below the second inner cone screw cap 7.8 through the first inner cone screw cap 7.7, and the assembly of the sand-blocking liquid-passing device is completed;
secondly, assembling a long-plunger sand-prevention long oil well pump, movably connecting the assembled sand-prevention liquid-passing device to the lower end of a fixed valve 6 through an upper connector 7.1, installing a fixed valve ball 12 on a valve seat of the fixed valve 6, and movably connecting the upper end of the fixed valve 6 to the lower end of a pump barrel 3; then, inserting the long plunger 4 provided with the upstream movable valve 10 and the downstream movable valve 11 into the pump barrel 3 to complete the assembly of the long plunger sand-proof long oil well pump; then the pump barrel 3, the connecting pipe 5, the fixed valve 6 and the sand blocking liquid passing device 7 are put into the bottom of an oil well casing 8 through the oil production pipe column 2 and are close to an artificial well bottom 9; the upper end of the long plunger 4 is connected with the lower end of the sucker rod 1;
thirdly, the pumping unit through the well head drives the pumping rod 1 to move up and down, when the pumping rod 1 drives the long plunger 4 to move up, the fixed valve ball 12 rises upwards, the oil well casing 8 and the sand-containing oil at the artificial well bottom 9 sequentially pass through the sand-blocking liquid-passing circulation plate 7.5 of the sand-blocking liquid-passing device 7, the sand-blocking liquid-passing reflection plate 7.4, the sand-blocking liquid-passing collection plate 7.3 and the supercharger 7.2, after multiple times of collision and sand blocking, the oil moves up through a liquid inlet channel formed after the fixed valve ball 12 rises, and the oil is lifted up to the well head along the oil pipe through the matching of the long plunger 4, the upstream movable valve 10, the downstream movable valve 11 and the pump barrel 3.
Preferably, in the third step, the specific process of passing the sand-containing oil through the sand blocking liquid passing device 7 is as follows:
before the sand-blocking liquid-passing device starts to work, the whole sand-blocking liquid-passing device 7 is submerged below the liquid level of the sand-containing oil liquid, and the sand content above the sand-containing oil liquid is less because the sand-containing oil liquid is in a static state at first;
a. when the long plunger 4 starts moving up:
the fixed valve ball 12 is opened, and the oil in the sand setting cavity 13 below the fixed valve 6 rises along the fixed valve 6 and is smoothly lifted into a cavity formed by the pump barrel 3 and the long plunger 4;
the oil in the cavity between the sand blocking and liquid passing collecting plate 7.3 and the sand blocking and liquid passing reflecting plate 7.4 rises along the third liquid inlet hole 7.3.2 of the sand blocking and liquid passing collecting plate (7.3) and is supplemented to the sand setting cavity 13 through the supercharger 7.2;
the sand-containing oil in the cavity between the sand blocking and liquid passing reflecting plate 7.4 and the sand blocking and liquid passing circulating plate 7.5 rises along the second liquid inlet hole 7.4.2 of the sand blocking and liquid passing reflecting plate 7.4, the solid granular sand collides with the circular main body 7.3.1 of the collecting plate of the sand blocking and liquid passing collecting plate 7.3 and moves downwards, and the oil continues to rise along the third liquid inlet hole 7.3.2;
the sand-containing oil below the sand blocking and liquid passing circulation plate 7.5 rises through the sand blocking and liquid passing circulation plate 7.5, and as the sand blocking and liquid passing circulation plate 7.5 is provided with a circle of a plurality of first liquid inlet holes 7.5.2 with thick lower parts and thin upper parts and a central hole 7.5.3 with thin lower parts and thick upper parts, the flow speed is increased when the sand-containing oil passes through the first liquid inlet hole 7.5.2 of the outer ring; the flow rate of the sand-laden oil through the central bore 7.5.3 is slowed; the rising sand-containing oil with the increased flow speed through the first liquid inlet hole 7.5.2 collides with the main body 7.4.1 of the reflecting plate 7.4 for blocking sand and passing through the liquid, and after being rebounded, the sand serving as solid particles collides with the sand-containing oil with the lower flow speed rising through the central hole 7.5.3 again and sinks or partially suspends;
b. when the long plunger 4 is reversed and pushed down: the fixed valve ball 12 sinks to be seated on the valve seat, and oil in a cavity formed by the pump barrel 3 and the long plunger 4 is lifted into the oil production string 2;
if a small amount of sand is contained in the oil liquid in the sand settling cavity 13, the sand can sink under the action of gravity;
if a small amount of sand is contained in the oil liquid in the inner cavity of the supercharger 7.2, the sand can sink under the action of gravity;
the oil liquid in the cavity between the sand blocking and liquid passing collecting plate 7.3 and the sand blocking and liquid passing reflecting plate 7.4 can sink under the action of gravity, and the collided sand is driven by the non-rising liquid to sink in an accelerated manner;
the sand-containing oil in the cavity between the sand blocking and liquid passing reflecting plate 7.4 and the sand blocking and liquid passing circulating plate 7.5 is accelerated to sink under the driving of no rising liquid by collided sand;
the sand-containing oil liquid positioned below the sand blocking liquid circulation plate 7.5 accelerates the sinking of the collided sand under the driving of no rising liquid;
c. when the long plunger 4 moves upwards again, the action of the step a is continuously repeated, the oil liquid in the oil production string 2 is continuously lifted, and the sand blocking liquid passing device realizes multi-stage sand blocking of the oil liquid pumped upwards; in the circulation operation of the long plunger 4 which continuously moves up and down, the oil in the well is pumped out to the well head little by little.
The principle of the process which can be realized by the invention is as follows: the liquid follows the law of pascal's law, i.e. movement in all directions, while suspended particles, i.e. suspensions, suspended in the liquid are crystals with anisotropic basic motion: satisfying Newton's law and collision principle. The liquid is a substance of molecular and atomic grade, and the particle size diameter of the liquid is 10 angstrom-10m and the particle size of the colloid is 10-9~10-7m, and the suspended particles of the suspension have a size of more than 10-7m, and the filtering accuracy of the sand screen is generally greater than 0.1mm, i.e. 10-4m, the volume and mass of the suspended particles, is much larger than the liquid molecules.
referring to the attached drawing 10, the sand blocking and liquid passing device 7 is a one-stage sand blocking structure, and specifically comprises an upper connector 7.1, a supercharger 7.2, a sand blocking and liquid passing reflecting plate 7.4, a sand blocking and liquid passing circulating plate 7.5, an outer cylinder 7.6 and a first inner cone nut 7.7, wherein the upper connector 7.1 is arranged at the upper end of the outer cylinder 7.6, the first inner cone nut 7.7 is arranged on the inner wall of the lower end of the outer cylinder 7.6, the sand blocking and liquid passing circulating plate 7.5, the sand blocking and liquid passing reflecting plate 7.4 and the supercharger 7.2 are sequentially arranged in the inner cavity of the outer cylinder 7.6 from bottom to top, the sand blocking and liquid passing circulating plate 7.5 is provided with a first liquid inlet hole, the liquid inlet hole corresponds to the sand blocking and liquid passing reflecting plate 7.4, the second liquid inlet hole of the sand blocking and liquid passing reflecting plate 7.4 is arranged at the center, the supercharger 7.2 is provided with a tapered hole, liquid passes through the sand blocking and liquid circulating plate 7.5, passes through the sand blocking and liquid passing reflecting plate 7.4, and then passes through the first sand blocking and liquid blocking plate to collect, then the liquid is pumped out through the fixed valve ball 12 and the pump cylinder 3.
Comparative experimental data for use at the oil well site of the present invention are as follows:
1. adjacent XX-slant XX well: the well completion test date is 2008, 12 months and 16 days (for internal experiment of victory oil field)
| Number of electrolysis | 28 | 29 | 30 | 51 | 55 | 59 | 62 | 63 | 66 |
| Horizon | s2s | s2s | s2s | s2x | s2x | s2x | s2x | s2x | s2x |
| Porosity of | 16.5 | 17.9 | 18.3 | 13.4 | 13.4 | 16.0 | 18.4 | 17.9 | 18.3 |
| Permeability rate of penetration | 37.8 | 141.5 | 42.0 | 33.4 | 30.9 | 52.9 | 245.1 | 9.60 | 104.6 |
| Mud content | 12.1 | 10.8 | 19.9 | 13.1 | 13.0 | 8.9 | 13.3 | 15.5 | 29.5 |
| Inclined depth of penetrating well (m) | 4.50 | 5.70 | 2.50 | 9.10 | 4.70 | 3.80 | 3.90 | 3.00 | 1.7 |
| Remarks for note | Production zone | Production zone | Production zone | Production zone | Production zone | Already sand-sealed | Already sand-sealed | Already sand-sealed | Already sand-sealed |
| Interpreting the results | Oil-dry layer | Oil-dry layer | Oil-dry layer | Oil-dry layer | Oil-dry layer | Oil layer | Water flooded layer | Water flooded layer | Oil-dry layer |
The well and the related production conditions in the face of the well
2009.1.22 production test of new well, production horizon s2x, electrolysis numbers 59, 62, 63 and 66, well segment 3435.5-3500.5m (not the fracturing layer), perforation 12.4m 4 layers, 3.3t of initial day liquid, 100% of water, 0.9t of final day liquid, 0% of day oil, 95% of water, 5t of phase accumulated oil and 65t of phase accumulated water.
2009.4.29 sand-filled well section 3435.5-3500.5m sand surface 3389.77m, upper-return well sections 2895.8-2937.3m of wells (not in the fracturing layer), initial day liquid 11.3t, day oil 10.1t, water content 10% and working fluid level 257 m.
2016.11 returns s2x2 perforations 3351.2-3360.3m, 3364.7-3369.4m and 11.8m (which are the fracturing section of the time), and the oil recovery is carried out, wherein the daily fluid at the initial stage is 0.8t, the daily oil is 0.4t, the daily fluid containing 37.5 percent of water is 0.7t, the daily oil is 0.4t, and the water content is 43.6 percent.
The use of the well pump:
after the completion of the well, namely pumping liquid starts from 12 and 2 days in 2009 to 12 and 25 days in 2009, and the trial pumping is completed to 4 and 29 days in 2009, the pumping is stopped because of the long pump.
In 2009, 29 days to 2016, 11 months, a sand blocking and liquid passing device of an oil well pump is connected under a long plunger sand prevention pump, a sand phenomenon does not occur, the mud content 29 is 141.5, and therefore the sand blocking effect of the sand blocking and liquid passing device can be seen.
In 2016 (11) and 2018 (7) and 29 (7) the used oil-well pump is still a long plunger pump, at the moment, two groups of serial sand-blocking liquid-passing groups connected by short joints (1.5 m) are used under the long plunger pump, because the production process is changed (the well is changed into a layered oil extraction process after 2018), fine silt is not seen in a fixed valve assembly when the pump is checked, and the structure that the sand-blocking liquid-passing groups are hung under the long plunger sand-prevention pump is used.
In view of the above, it is desirable to provide,
| |
1 | 2 | 3 |
| Tool with a locking mechanism | Long plunger sand control pump | Long plunger sand-proof pump plus first-stage sand-blocking liquid-passing device | Long plunger sand control pump and secondary sand blocking liquid dredging device set |
| Time of day | About 5 |
1 year and 7 |
2 years and 1 month |
| Effect | Stop pumping due to sand jamming | A certain sand content appears in the fixed valve assembly | No grit was found in the standing valve assembly |
The above description is only a few of the preferred embodiments of the present invention, and any person skilled in the art may modify the above-described embodiments or modify them into equivalent ones. Therefore, any simple modifications or equivalent substitutions made in accordance with the technical solution of the present invention are within the scope of the claims of the present invention.
Claims (1)
1. A use method of a long-plunger sand-prevention long oil well pump with a sand blocking liquid passing device is characterized by comprising the following steps:
firstly, assembling a sand blocking and liquid passing device, screwing a supercharger (7.2) into an inner cavity of an outer cylinder body (7.6), and screwing and fixing a sand blocking and liquid passing collecting plate (7.3) below the supercharger (7.2) by a third inner cone screw cap (7.9); then, fixing a sand-blocking liquid-passing reflecting plate (7.4) below a third inner cone nut (7.9) through a second inner cone nut (7.8); then fixing a sand-blocking liquid-passing circulating plate (7.5) below a second inner cone screw cap (7.8) through a first inner cone screw cap (7.7) to complete the assembly of the sand-blocking liquid-passing device;
secondly, assembling a long-plunger sand-prevention long oil well pump, movably connecting the assembled sand-prevention liquid-passing device to the lower end of a fixed valve (6) through an upper connector (7.1), installing a fixed valve ball (12) on a valve seat of the fixed valve (6), movably connecting the upper end of the fixed valve (6) to the lower end of a connecting pipe (5), and connecting the upper end of the connecting pipe (5) with a pump cylinder (3); then, inserting a long plunger (4) provided with an upstream movable valve (10) and a downstream movable valve (11) into the pump cylinder (3) and the connecting pipe (5) to complete the assembly of the long plunger sand-proof long oil well pump; then the pump cylinder (3), the connecting pipe (5), the fixed valve (6) and the sand blocking liquid passing device (7) are lowered into the set position of the oil well casing (8) through the oil production pipe column (2); the upper end of the long plunger (4) is connected with the lower end of the sucker rod (1);
thirdly, the pumping unit through the wellhead drives the pumping rod (1) to move up and down, when the pumping rod (1) drives the long plunger (4) to move up, the fixed valve ball (12) rises upwards, the sand-containing oil at the set position of the oil well casing (8) sequentially passes through the sand-blocking liquid-passing circulation plate (7.5), the sand-blocking liquid-passing reflection plate (7.4), the sand-blocking liquid-passing collection plate (7.3) and the supercharger (7.2) of the sand-blocking liquid-passing device (7), after multiple times of collision and sand blocking, the oil moves upwards through a liquid inlet channel formed after the fixed valve ball (12) rises, and the oil is lifted up to the wellhead along the oil pipe through the matching of the long plunger (4), the upstream movable valve (10), the downstream movable valve (11) and the pump barrel (3);
in the third step, the specific process of the sand-containing oil passing through the sand blocking liquid passing device (7) is as follows:
before the sand-blocking liquid-passing device starts to work, the whole sand-blocking liquid-passing device (7) is submerged below the liquid level of the sand-containing oil liquid, and the sand content above the sand-containing oil liquid is less because the sand-containing oil liquid is in a static state at first;
a. when the long plunger (4) starts to move upwards:
the valve ball (12) of the fixed valve is opened, and oil in the sand setting cavity (13) below the fixed valve (6) rises along the fixed valve (6) and is smoothly lifted into a cavity formed by the pump cylinder (3), the connecting pipe (5) and the long plunger (4);
oil in the cavity between the sand blocking and liquid passing collecting plate (7.3) and the sand blocking and liquid passing reflecting plate (7.4) rises along the third liquid inlet hole (7.3.2) of the sand blocking and liquid passing collecting plate (7.3) and is supplemented to the sand setting cavity (13) through the supercharger (7.2);
the sand-containing oil in the cavity between the sand blocking and liquid passing reflecting plate (7.4) and the sand blocking and liquid passing circulating plate (7.5) rises along the second liquid inlet hole (7.4.2) of the sand blocking and liquid passing reflecting plate (7.4), the solid granular sand collides with the circular main body (7.3.1) of the collecting plate of the sand blocking and liquid passing collecting plate (7.3) and moves downwards, and the oil continues to rise along the third liquid inlet hole (7.3.2);
the sand-containing oil below the sand blocking and liquid passing circulation plate (7.5) rises through the sand blocking and liquid passing circulation plate (7.5), and as the sand blocking and liquid passing circulation plate (7.5) is provided with a circle of a plurality of first liquid inlet holes (7.5.2) which are thick at the bottom and thin at the top and a central hole (7.5.3) which is thin at the bottom and thick at the top, the flow rate is increased when the sand-containing oil passes through the first liquid inlet holes (7.5.2) of the outer ring; a reduced flow rate of sand-laden oil through the central aperture (7.5.3); the rising sand-containing oil with the increased flow speed through the first liquid inlet hole (7.5.2) collides with a main body (7.4.1) of a reflecting plate (7.4) for blocking sand and passing through the liquid, and after sand serving as solid particles rebounds, the rising sand-containing oil with the lower flow speed rises through the central hole (7.5.3) collides again and sinks or partially suspends;
b. when the long plunger (4) is reversed and pushed downwards: a valve ball (12) of the fixed valve is sunk and seated on a valve seat, and oil in a cavity formed by the pump cylinder (3), the connecting pipe (5) and the long plunger (4) is lifted into the oil production pipe (2);
if a small amount of sand is contained in the oil liquid in the sand settling cavity (13), the sand can sink under the action of gravity;
if a small amount of sand is contained in the oil liquid in the inner cavity of the supercharger (7.2), the sand can sink under the action of gravity;
the oil liquid in the cavity between the sand blocking and liquid passing collecting plate (7.3) and the sand blocking and liquid passing reflecting plate (7.4) contains a small amount of sand, the sand can sink under the action of gravity, and the collided sand is driven by the non-rising liquid to sink in an accelerated manner;
the sand-containing oil in the cavity between the sand blocking and liquid passing reflecting plate (7.4) and the sand blocking and liquid passing circulating plate (7.5) is accelerated to sink by the collided sand under the drive of no rising liquid;
the sand-containing oil liquid positioned below the sand blocking liquid circulation plate (7.5) is accelerated to sink by the collided sand under the drive of no rising liquid;
c. when the long plunger (4) moves upwards again, the action of the step a is continuously repeated, the oil liquid in the oil production string (2) is continuously lifted, and the sand blocking liquid passing device realizes multi-stage sand blocking of the oil liquid pumped upwards; in the circulation operation of continuously moving the long plunger (4) upwards and downwards, oil in the well is pumped out to the wellhead little by little.
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| CN201910784937.5A CN110500264B (en) | 2019-08-23 | 2019-08-23 | Using method of long-plunger sand-prevention long oil well pump with sand blocking liquid passing device |
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| CN201554633U (en) * | 2009-10-16 | 2010-08-18 | 中船重工中南装备有限责任公司 | Falling object protective oil pump capable of performing annulus logging |
| CN103122755A (en) * | 2011-11-18 | 2013-05-29 | 西安西达地质技术服务有限责任公司 | Oil sieve tube |
| CN206571659U (en) * | 2017-03-27 | 2017-10-20 | 盐城华远石油机械有限公司 | A kind of long plunger sand control can just wash energy-conserving and environment-protective oil well pump |
| CN208436509U (en) * | 2018-05-23 | 2019-01-29 | 杭州科以才成科技有限公司 | A kind of multilayer water conservancy diversion plate washer orientation desilting sand discharge filter device |
| CN208587147U (en) * | 2018-06-19 | 2019-03-08 | 刘园 | A kind of sand settling type oil extraction pump that sand controlling result is good |
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