CN211008515U - Pulse jet rock debris cleaning tool - Google Patents
Pulse jet rock debris cleaning tool Download PDFInfo
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- CN211008515U CN211008515U CN201922179614.1U CN201922179614U CN211008515U CN 211008515 U CN211008515 U CN 211008515U CN 201922179614 U CN201922179614 U CN 201922179614U CN 211008515 U CN211008515 U CN 211008515U
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- central
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- flow guide
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- 238000004140 cleaning Methods 0.000 title claims abstract description 44
- 239000011435 rock Substances 0.000 title claims description 32
- 238000005553 drilling Methods 0.000 abstract description 65
- 239000012530 fluid Substances 0.000 abstract description 54
- 230000000694 effects Effects 0.000 abstract description 5
- 239000013049 sediment Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 230000005484 gravity Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 238000000151 deposition Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
The utility model relates to a pulse jet detritus cleaning means belongs to well drilling auxiliary assembly technical field. The novel bearing comprises an upper joint, a shell, a central pipe and a lower joint, wherein the upper joint is installed at one end of the shell in a threaded mode, the lower joint is installed at the other end of the shell in a threaded mode, and the central pipe is movably installed inside the shell through a left bearing and a right bearing; one end head of the central tube is connected with the upper joint in an abutting mode and correspondingly communicated with the upper joint, and the other end head of the central tube is connected with the lower joint in an abutting mode and correspondingly communicated with the lower joint; the central pipe between the left bearing and the right bearing is provided with at least two flow guide holes, the flow guide holes are communicated with the central hole of the central pipe, the circumference of the shell is provided with a plurality of jet holes corresponding to the flow guide holes, and the flow guide holes are intermittently communicated with the jet holes. This cleaning tool can clear up the detritus bed, prevents the detritus sediment, thereby has strengthened the turbulent degree of drilling fluid around the cleaning tool simultaneously and has made the fluid produce better rock-carrying effect, has avoided the detritus sediment too much to cause the risk of sticking a drill.
Description
Technical Field
The utility model relates to a pulse jet detritus cleaning means belongs to well drilling auxiliary assembly technical field.
Background
In the process of petroleum drilling of complex structural wells such as large-displacement horizontal wells, multilateral wells and the like, rocks are drilled and crushed by a drill bit to form rock debris which is accumulated in the annulus of a borehole and continuously carried to the ground surface through circulating drilling fluid. However, due to the influence of acting forces such as gravity, viscous resistance, impact force and the like, the detritus bed is very easy to generate, if the thickness of the detritus bed deposited in the well is too high, a series of serious downhole problems can be caused, such as the problems that the bit pressure cannot be effectively transmitted, the friction resistance and the torque of a downhole drilling tool combination are increased, the mechanical drilling speed is slow, the drilling tool is blocked and twisted off due to serious resistance when the drilling tool is taken out and put into the well, and the mechanical drilling speed is greatly reduced by processing the downhole accidents, and the non-production time and the operation cost are greatly increased. There is a need for a high wellbore cleaning efficiency during drilling of wells of complex construction, minimizing the effects of the formation bed, and ensuring drilling tool and wellbore safety.
The existing rock debris removing tool has defects due to the structure, and the defects are as follows: general detritus appurtenance is the structure of drilling rod plus owed size centralizer, when using detritus appurtenance, it takes place to rotate to drive the detritus appurtenance with the help of the drilling rod rotation, utilize the centralizer of detritus appurtenance, cause around the fluid to change, destroy the stability of detritus bed, and carry the detritus to the earth's surface through the circulation of drilling fluid, because the operation requirement of equipment restriction and directional well section, the rotational speed of drilling rod is often lower, can influence the cleaning performance of appurtenance to a certain extent, make detritus bed cleaning performance very unsatisfactory, and simultaneously, the detritus appears the deposition easily when this appurtenance's centralizer rotates, and the adhesion appears the condition of sticking on the appurtenance, the cleaning work efficiency has been reduced. In view of the above-mentioned disadvantages, it is therefore necessary to improve it.
Disclosure of Invention
The utility model aims to provide a: the utility model provides a rational in infrastructure, convenient to use to solve current detritus bed cleaning means because of the structure reason, the detritus cleaning performance who has deposited is unsatisfactory, and the detritus deposits easily and leads to the card to bore and influence the pulse efflux detritus cleaning means of normal clearance work efficiency scheduling problem.
The technical scheme of the utility model is that:
the utility model provides a pulse jet detritus cleaning means, it comprises top connection, casing, center tube and lower clutch, and the top connection is installed to the one end screw thread of casing, and the lower clutch, its characterized in that are installed to the other end screw thread of casing: a central tube is movably arranged in the shell through a left bearing and a right bearing, one end head of the central tube is connected with the upper joint in an abutting mode and correspondingly communicated with the upper joint, and the other end head of the central tube is connected with the lower joint in an abutting mode and correspondingly communicated with the lower joint; the central pipe between the left bearing and the right bearing is provided with at least two flow guide holes, the flow guide holes are communicated with the central hole of the central pipe, the circumference of the shell is provided with a plurality of jet holes corresponding to the flow guide holes, and the flow guide holes are intermittently communicated with the jet holes.
The flow guide holes are coaxially arranged on the central pipe at intervals.
The jet holes corresponding to the diversion holes are arranged in a staggered manner on the circumference of the shell.
The jet hole is inclined on the shell.
The section of the central tube is elliptic.
The wall thickness of the central tube below the central hole of the central tube is larger than that of the central tube above the central hole.
The center hole of the center tube is a reducing through hole, and the flow guide hole is correspondingly communicated with the small-diameter section of the center hole of the center tube.
The utility model has the advantages that:
the pulse jet rock debris cleaning tool is reasonable in structure and convenient to use, and in work, as the section of the central tube is elliptical, the center of gravity of the central tube is positioned below the central hole of the central tube, under a natural state, acting force does not need to be applied from the outside, the central tube can constantly keep facing the gravity direction, so that the flow guide holes in the central tube keep a radial state and are intermittently matched and communicated with the jet holes in the shell, and the rock debris bed can be periodically cleaned in a pulse mode through high-pressure drilling fluid; the high-pressure drilling fluid which is rapidly sprayed can change the direction of fluid around the cleaning tool and improve the fluid speed, the increase of the fluid speed can enhance the turbulence degree of the fluid flow and improve the rock carrying and cleaning capacity of the fluid, thereby generating better effect of cleaning rock debris; the rock debris of clearance is taken out the rock debris through the drilling fluid that goes up to return in the sky, and this cleaning means can prevent that the rock debris from depositing, can not cause the risk that cleaning means adhesion rock debris took place the card brill.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic cross-sectional view taken along the line A-A in FIG. 1;
FIG. 3 is a schematic cross-sectional view taken along the direction B-B in FIG. 1;
FIG. 4 is a schematic perspective view of the center tube of FIG. 1;
fig. 5 is a schematic cross-sectional view taken along the direction C-C in fig. 4.
In the figure: 1. the device comprises an upper joint, 2, a shell, 3, a central pipe, 4, a lower joint, 5, a left bearing, 6, a right bearing, 7, a central hole, 8, a jet hole, 9 and a flow guide hole.
Detailed Description
The pulse jet rock debris cleaning tool is composed of an upper joint 1, a shell 2, a central tube 3 and a lower joint 4, wherein the shell 2, the upper joint 1 and the lower joint 4 are respectively cylindrical, an inner hole of the upper joint is in a reducing shape, the upper joint 1 is installed at one end of the shell 2 in a threaded manner, the lower joint 4 is installed at the other end of the shell 2 in a threaded manner, the shell 2, the upper joint 1 and the lower joint 4 are in a straight cylindrical shape after being installed in a threaded manner, in operation, the upper joint 1 and the lower joint 4 are used for connecting a drill rod, and the lower joint 4 is used for installing a drilling tool; when the drilling fluid flows from the large-diameter end to the small-diameter end of the inner hole of the upper joint 1, the inner hole of the upper joint 1 is in a reducing shape, the upper joint 1 can generate pressure building on the drilling fluid, the liquid flow rate of the drilling fluid in the upper joint 1 is accelerated, and therefore the drilling fluid acts on a drilling tool.
A central pipe 3 is movably arranged in the shell 2 through a left bearing 5 and a right bearing 6, a central hole 7 of the central pipe 3 is a reducing through hole, one end head of the central pipe 3 is in butt joint with the upper joint 1, a large-diameter port of the central hole 7 of the central pipe 3 is correspondingly communicated with a small-diameter end of an inner hole of the upper joint 1 in size, drilling fluid flowing into the inner hole of the upper joint 1 flows into the central hole 7 through the large-diameter port of the central hole 7 and flows to the small-diameter end of the central hole 7 from the large-diameter end of the central hole 7 in the direction of the small-diameter end of the central hole 7 in working, and the central pipe 3 generates pressure-holding on the drilling fluid because the central hole 7 is the.
The end head of the other end of the central tube 3 is connected with the lower joint 4 in an abutting mode, and the end port of the small-diameter end of the central hole 7 of the central tube 3 is correspondingly communicated with the size of the inner hole of the lower joint 4; in operation, the drilling fluid flowing into the central hole 7 continuously flows towards the inner hole of the lower connector 4 from the end head of the small-diameter end of the central hole 7.
Be provided with the jet hole 8 that corresponds with water conservancy diversion hole 9 on casing 2, water conservancy diversion hole 9 is perpendicular setting on center tube 3, and jet hole 8 is the slope form on casing 2, and each jet hole 8 is dislocation form setting, its aim at on 2 circumferences of casing: firstly, the staggered jet holes 8 can ensure the structural strength of the shell 2, and meanwhile, the staggered jet holes 8 are matched with the diversion holes 9 to alternately form uninterrupted drilling fluid pulse flow; in operation, when casing 2 takes place circumferential direction, jet hole 8 on the casing 2 and the water conservancy diversion hole 9 intermittent type intercommunication on the center tube 3, when water conservancy diversion hole 9 and jet hole 8 communicate, the drilling fluid in the water conservancy diversion hole 9 is the high-speed blowout of pulsed outside casing 2 through jet hole 8 to increase the turbulent degree of casing 2 surrounding liquid stream, make the fluid direction change around casing 2 and form strong turbulence, produce the better effect of washing the detritus bed from this.
The section of a central tube 3 of the cleaning tool is oval, and the wall thickness of the central tube below a central hole 7 of the central tube 3 is larger than that of the central tube above the central hole 7; the gravity center of the central tube 3 is located below a central hole 7 of the central tube 3, and in a natural state, acting force is not required to be applied from the outside, the gravity center of the central tube 3 is always kept downward, so that a flow guide hole 9 in the central tube 3 is kept unchanged in position, a jet hole 8 of the shell 2 can be communicated with the flow guide hole 9 only when rotating below the flow guide hole 9, and therefore high-pressure jet flow sprayed out of the flow guide hole 9 and the jet hole 8 can only act on a rock debris bed.
When the pulse jet rock debris cleaning tool works, the pulse jet rock debris cleaning tool is arranged on a drill rod through an upper connector 1, and a drilling tool is arranged through a lower connector 4; in the operation, the drilling tool is integrally driven to rotate under the action of the drill rod, wherein when high-pressure drilling fluid enters the cleaning tool through the upper connector 1, one part of the high-pressure drilling fluid descends through the central hole 7 of the central pipe 3 and acts on the drilling tool to perform large-displacement horizontal well drilling operation, and the other part of the high-pressure drilling fluid is sprayed out through the diversion holes 9 and the jet holes 8 to clean a rock debris bed generated by the drilling operation; the method specifically comprises the following steps:
when this cleaning means formed horizontal station state in the horizontal well, the drilling rod drove casing 2 through top connection 1 and takes place circumferential direction, under center tube 3 mutually supported with left bearing 5 and right bearing 6, casing 2 formed idle running for center tube 3, and casing 2 can not drive center tube 3 and take place circumferential direction, and casing 2 transmits kinetic energy to the drilling tool through lower clutch 4 on to it takes place to rotate to drive the drilling tool.
Pumping high-pressure drilling fluid into a drill rod, wherein the drilling fluid flows into an inner hole of an upper joint 1 through the drill rod, the inner hole of the upper joint 1 is in a reducing shape, the inner hole of the upper joint 1 forms pressure-holding-down on the drilling fluid, so that the drilling fluid improves the liquid flow rate in the upper joint 1, and flows from the inner hole of the upper joint 1 to a central hole 7 of a central tube 3, because the central hole 7 of the central tube 3 is a reducing hole, the drilling fluid flowing into the central tube 3 forms second pressure-holding-down in the central hole 7, so that the drilling fluid improves the liquid flow rate in the central hole 7 of the central tube 3 again, part of the high-pressure drilling fluid in the central hole 7 of the central tube 3 flows into a flow guide hole 9, and forms pressure-holding-down in the flow guide hole 9, and the other part of the high-pressure drilling fluid flows to.
When casing 2 took place circumferential direction along with the drill bit, because the center tube 3 cross-section is the ellipse, the center tube wall thickness of center tube 7 below of center tube 3 is greater than the center tube wall thickness of center tube 7 top, under natural state, need not the external world and exert the effort, the focus of center tube 3 is located the center hole 7 below of center tube 3, center tube 3 keeps the focus downward all the time, make water conservancy diversion hole 9 be located the center hole 7 below of center tube 3, water conservancy diversion hole 9 on the center tube 3 remains the position unchanged under natural state all the time, water conservancy diversion hole 9 on the center tube 3 can remain corresponding with the detritus bed in the horizontal well all the time from this.
The jet holes 8 are arranged on the circumference of the shell 2 in a staggered interval manner, the jet holes 8 of the shell 2 can be communicated with the diversion holes 9 only when rotating below the diversion holes 9, and along with the rotation of the shell 2, the jet holes 8 on the shell 2 and the diversion holes 9 on the central tube 3 can periodically form an open and closed state.
When jet hole 8 and water conservancy diversion hole 9 formed the state that opens and shuts each other, the high-pressure drilling fluid in the water conservancy diversion hole 9 can be followed jet hole 8 and to the outer high-speed blowout of casing 2, and spun drilling fluid can form radial pulse, because jet hole 8 is the slope form on casing 2, forms the drilling fluid of radial pulse and can strike the detritus bed in the horizontal well, can effectively prevent like this that the detritus bed from taking place the condition of deposition.
When the diversion hole 9 and the jet hole 8 form a closed state, the shell 2 temporarily forms a plug for the diversion hole 9. Along with the circumferential rotation that casing 2 does not stop, efflux hole 8 and water conservancy diversion hole 9 are periodic open, closed, so relapse, and efflux hole 8 on the casing 2 can the periodic outwards spout high-pressure drilling fluid pulse, can change this cleaning means around drilling fluid flow direction, strengthen this cleaning means around the turbulent degree of drilling fluid flow to make drilling fluid turn into strong turbulence by the laminar flow, make the interior more detritus that mixes of drilling fluid, thereby improve the rock-carrying ability of drilling fluid.
After the drilling fluid and the rock debris around the cleaning tool are mixed, the drilling fluid sprayed out by the drilling tool returns to the ground together with the drilling fluid from an annular layer between the well wall and the cleaning tool, and the cleaning operation of the rock debris bed is completed.
The pulse jet rock debris cleaning tool is reasonable in structure and convenient to use, and in work, as the center of gravity of the boss part of the central tube is low, the boss can constantly keep towards the gravity direction without applying an acting force from the outside in a natural state, the jet hole on the boss keeps a radial state and is intermittently matched and communicated with the diversion hole on the shell, so that the rock debris bed can be periodically cleaned in a pulse mode through high-pressure drilling fluid; the high-pressure drilling fluid which is rapidly sprayed can change the direction of fluid around the cleaning tool and improve the fluid speed, the increase of the fluid speed can enhance the turbulence degree of the fluid flow and improve the rock carrying and cleaning capacity of the fluid, thereby generating better effect of cleaning rock debris; the rock debris of clearance is taken the rock debris out through the drilling fluid that goes up to return in the sky, and this cleaning means can prevent that the rock debris from depositing, can not cause the risk that the sticking of rock debris cleaning means took place to block the brill.
The above description is only a preferred embodiment of the present invention, and the above illustration does not limit the essence of the present invention in any form, and any simple modification or variation of the above embodiments based on the technical essence of the present invention and equivalent embodiments which may be changed or modified to equivalent variations by using the technical essence of the present invention by those of ordinary skill in the art after reading the present description still belong to the technical solution of the present invention without departing from the essence and scope of the present invention.
Claims (7)
1. The utility model provides a pulse jet detritus cleaning means, it comprises top connection (1), casing (2), center tube (3) and lower clutch (4), and top connection (1) are installed to the one end screw thread of casing (2), and lower clutch (4), its characterized in that are installed to the other end screw thread of casing (2): a central pipe (3) is movably arranged in the shell (2) through a left bearing (5) and a right bearing (6), one end of the central pipe (3) is connected with the upper connector (1) in an abutting mode and correspondingly communicated with the upper connector, and the other end of the central pipe (3) is connected with the lower connector (4) in an abutting mode and correspondingly communicated with the lower connector; the jet-type bearing is characterized in that at least two flow guide holes (9) are formed in the central pipe (3) between the left bearing (5) and the right bearing (6), the flow guide holes (9) are communicated with a central hole (7) of the central pipe (3), jet holes (8) corresponding to the flow guide holes (9) are formed in the circumference of the shell (2), and the flow guide holes (9) are intermittently communicated with the jet holes (8).
2. A pulsed jet rock debris cleaning tool as claimed in claim 1, wherein: the flow guide holes (9) are coaxially arranged on the central pipe (3) at intervals.
3. A pulsed jet rock debris cleaning tool as claimed in claim 2, wherein: jet holes (8) corresponding to the diversion holes (9) are arranged on the circumference of the shell (2) in a staggered manner.
4. A pulsed jet rock debris cleaning tool as claimed in claim 3, wherein: the jet hole (8) is inclined on the shell (2).
5. A pulsed jet rock debris cleaning tool as claimed in claim 2, wherein: the section of the central tube (3) is elliptical.
6. A pulse jet debris cleaning tool in accordance with claim 5, wherein: the wall thickness of the central tube below the central hole (7) of the central tube (3) is larger than that of the central tube above the central hole (7).
7. A pulse jet debris cleaning tool in accordance with claim 6, wherein: the center hole of the central tube (3) is a reducing through hole, and the diversion hole (9) is correspondingly communicated with the small-diameter section of the center hole (7) of the central tube (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922179614.1U CN211008515U (en) | 2019-12-09 | 2019-12-09 | Pulse jet rock debris cleaning tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922179614.1U CN211008515U (en) | 2019-12-09 | 2019-12-09 | Pulse jet rock debris cleaning tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211008515U true CN211008515U (en) | 2020-07-14 |
Family
ID=71470834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922179614.1U Expired - Fee Related CN211008515U (en) | 2019-12-09 | 2019-12-09 | Pulse jet rock debris cleaning tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211008515U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110748311A (en) * | 2019-12-09 | 2020-02-04 | 长江大学 | Pulse jet rock debris cleaning tool |
| CN113266310A (en) * | 2021-06-03 | 2021-08-17 | 长江大学 | Cam-type rock debris cleaning tool |
| CN114439391A (en) * | 2020-11-02 | 2022-05-06 | 中国石油天然气股份有限公司 | Detritus bed removing tool |
-
2019
- 2019-12-09 CN CN201922179614.1U patent/CN211008515U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110748311A (en) * | 2019-12-09 | 2020-02-04 | 长江大学 | Pulse jet rock debris cleaning tool |
| CN114439391A (en) * | 2020-11-02 | 2022-05-06 | 中国石油天然气股份有限公司 | Detritus bed removing tool |
| CN114439391B (en) * | 2020-11-02 | 2023-09-26 | 中国石油天然气股份有限公司 | Tool for removing rock debris bed |
| CN113266310A (en) * | 2021-06-03 | 2021-08-17 | 长江大学 | Cam-type rock debris cleaning tool |
| CN113266310B (en) * | 2021-06-03 | 2022-11-18 | 长江大学 | Cam-type rock debris cleaning tool |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200714 |
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| CF01 | Termination of patent right due to non-payment of annual fee |