CN110454114A - Packer for quickly stabilizing water content of wellhead produced liquid of low-oil-production oil well - Google Patents
Packer for quickly stabilizing water content of wellhead produced liquid of low-oil-production oil well Download PDFInfo
- Publication number
- CN110454114A CN110454114A CN201910670118.8A CN201910670118A CN110454114A CN 110454114 A CN110454114 A CN 110454114A CN 201910670118 A CN201910670118 A CN 201910670118A CN 110454114 A CN110454114 A CN 110454114A
- Authority
- CN
- China
- Prior art keywords
- well
- packer
- oil
- packing element
- produced liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 27
- 239000003129 oil well Substances 0.000 title abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 6
- 238000004519 manufacturing process Methods 0.000 title abstract description 4
- 230000000087 stabilizing effect Effects 0.000 title abstract 2
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 238000012856 packing Methods 0.000 claims description 36
- 238000011010 flushing procedure Methods 0.000 claims description 19
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- -1 polytetrafluoroethylene Polymers 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 33
- 239000010779 crude oil Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 7
- 238000003825 pressing Methods 0.000 abstract 3
- 238000005406 washing Methods 0.000 abstract 2
- 238000012544 monitoring process Methods 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- 238000000605 extraction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
Classifications
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/127—Packers; Plugs with inflatable sleeve
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Mechanical Engineering (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention relates to a packer for quickly stabilizing the water content of a wellhead produced liquid of a low-oil-production oil well. The problem that the stability time of well head water content is very long when the oil sleeve annulus time above a pump suction inlet is filled with crude oil of the existing high-water-content oil well is mainly solved. The method is characterized in that: the upper joint (1) is connected with the central pipe (4), and the lower joint (16) is in threaded connection with the lower end of the central pipe (4); the middle part of the central tube (4) is in threaded connection with a rubber sleeve shaft (8), and the bottom of the central tube is in threaded connection with a sealing sleeve (13); the upper end of the rubber cylinder shaft (8) is sleeved with a well washing piston (3); the middle lower part of the rubber cylinder shaft (8) is sequentially sleeved with a plurality of rubber cylinders (10), the rubber cylinder shafts at the upper end and the lower end of each rubber cylinder are respectively connected with an upper pressing ring (7) and a lower pressing ring (12) in a threaded manner, and the rubber cylinder shafts are connected with the lower pressing rings (12) through setting starting nails (11); two opposite protection rings are arranged between the well washing piston (3) and the piston back cap (6). The packer can quickly stabilize the water content of the wellhead produced liquid.
Description
Technical field
The present invention relates to a kind of tool of oilfield downhole operation technical field, in particular to a kind of low yield oil mass producing well is fast
Speed stablizes the packer of well head Produced Liquid moisture content.
Background technique
After initial stage stratum extraction oil of going into operation after operation for mechanical oil well reaches the suction inlet of pump, a part of crude oil
Extraction is to well head in into oil pipe, and another part crude oil continues to float along oil jacket annulus, until Pump Suction Nozzle top oil jacket annulus
After being full of completely by crude oil, the crude oil of stratum extraction at this time can just fully enter oil well pump, produce to well head, well head at this time contains
Water rate is only the true moisture content on stratum.But for high-water-cut oil-producing well (especially for single-well injection-production well), oil production only has
For 0.5m3/d hereinafter, time of the crude oil full of the above oil jacket annulus of Pump Suction Nozzle is very long, the well head aqueous stabilization time is very long, this
A kind of packer of fast and stable well head Produced Liquid moisture content is capable of in invention aiming at this kind of well.
Summary of the invention
The technical problem to be solved by the present invention is to overcome existing high-water-cut oil-producing well crude oil present in background technique to be full of
The problem of the aqueous stabilization time length of the Pump Suction Nozzle above oil jacket annulus time very long well head, and a kind of low yield oil mass oil recovery is provided
The packer of well fast and stable well head Produced Liquid moisture content, the low yield oil mass producing well fast and stable well head Produced Liquid moisture content
Packer, as long as the crude oil of stratum output can quickly make well head full of Pump Suction Nozzle to the oil jacket annulus between packing element
The aqueous stabilization of Produced Liquid.
The present invention solves the problems, such as that it can reach by following technical solution: the low yield oil mass producing well fast and stable well head
The packer of Produced Liquid moisture content, including top connection, lower contact, top connection connect central tube, and lower contact upper end is sleeved on center
Guan Shang is connect with central tube lower thread；Packing element axis is threadedly coupled in the middle part of central tube, central tube bottom thread connects sealing shroud；
Packing element axis upper end is set with well-flushing piston；Packing element axis middle and lower part is successively set with several packing elements, the packing element axis point of packing element upper and lower ends
Not Luo Wenlianjie upper press ring, lower pressure ring, packing element axis by set starting nail is connect with lower pressure ring；Well-flushing piston thread connects piston
Back of the body cap, there are two opposite protection rings for dress between well-flushing piston and piston back of the body cap；Two opposite protection interannulars are equipped with O-shaped ring B；
Compressed spring is set on central tube between well-flushing upper piston area and top connection；Lower contact threaded upper ends connect sliding pin；Outside lower contact
Portion is threadedly coupled lower pressure ring lower end.
The present invention can have the following beneficial effects: the low yield oil mass producing well fast and stable compared with above-mentioned background technique
The packer of well head Produced Liquid moisture content, is installed on the top of Pump Suction Nozzle, as long as the crude oil of stratum output is full of Pump Suction Nozzle
It can make the aqueous stabilization of well head Produced Liquid to the oil jacket annulus between packing element.When packer top, oil jacket annulus pressure is big
In packer lower part oil jacket annulus pressure 0.1MPa, communicating passage can open the prison realized to oil reservoir stream pressure to packer up and down
It surveys, while the channel also can be used as the channel of oil well cleanup liquid, the channel can be automatic when annular pressure balances above and below packer
It closes.Energy fast and stable of the present invention is aqueous, while not influencing normally to flow pressure monitoring and well-flushing needs.
Detailed description of the invention
Attached drawing 1 is structural schematic diagram of the invention；
Attached drawing 2 is the enlarged diagram of A in attached drawing 1.
In figure: 1-top connection；2-compressed springs；3-well-flushing pistons；4-central tubes；5-protection rings；6-plunger backers
Cap；7-upper press rings；8-packing element axis；9-spacer rings；10-packing elements；11-set starting nail；12-lower pressure rings；13-sealings
Set；14-sliding pins；15-O-shaped ring A；16-lower contacts；17-O type cushion rubber B.
Specific embodiment:
The invention will be further described with reference to the accompanying drawing:
As shown in Fig. 1, the packer of the low yield oil mass producing well fast and stable well head Produced Liquid moisture content, including top connection 1,
Lower contact 16, top connection 1 connect central tube 4, and 16 upper end of lower contact is sleeved on central tube 4, connect with 4 lower thread of central tube
It connects；Packing element axis 8 is threadedly coupled in the middle part of central tube 4,4 bottom thread of central tube connects sealing shroud 13；8 upper end of packing element axis suit is washed
Well piston 3；8 middle and lower part of packing element axis is successively set with several packing elements 10, and usual packing element is generally three groups)；Adjacent packing element
Spacer ring 9 is housed between 10；The packing element axis 8 of 10 upper and lower ends of packing element is threadedly coupled upper press ring 7, lower pressure ring 12 respectively, and packing element axis 8 passes through
Starting nail 11 is set to connect with lower pressure ring 12；Well-flushing piston 3 is threadedly coupled piston back of the body cap 6, between well-flushing piston 3 and piston back of the body cap 6
There are two opposite protection rings 5 for dress；As shown in Fig. 2, 5 one side end of protection ring is planar structure, end side is and O-shaped glue
Enclose the arcuate structure of B17 circular arc cooperation；It is equipped with O-shaped ring B17 between two opposite protection rings 5, protection ring 5 is to O-shaped ring B17
When being protected, prevent well-flushing piston 3 from acting or O-shaped ring B17 is damaged when pressure-bearing, while played well-flushing piston 3 and be axially moved
Reduce the effect of frictional force；；Compressed spring 2 is set on central tube 4 between 3 top of well-flushing piston and top connection 1；In lower contact 16
End is threadedly coupled sliding pin 14；16 external screw-thread of lower contact connects lower 12 lower end of pressure ring.Equipped with O-shaped between lower pressure ring 12 and lower contact 16
Cushion rubber A15；Protection ring 5 uses polytetrafluoroethylene (PTFE) material.
The packer of the low yield oil mass producing well fast and stable well head Produced Liquid moisture content is installed on the top of Pump Suction Nozzle,
As long as the crude oil of stratum output can be such that well head Produced Liquid contains full of Pump Suction Nozzle to the oil jacket annulus between packing element 10
Water is stablized.When packer top oil jacket annulus pressure is greater than packer lower part oil jacket annulus pressure 0.1MPa, packer connects up and down
Circulation passage can open the monitoring realized to oil reservoir stream pressure, while the channel also can be used as the channel of oil well cleanup liquid, work as packing
The channel can be automatically closed when annular pressure balance above and below device.In the case where being applied to φ 140mm casing, interior latus rectum is reachable
φ60mm-φ76mm., to normally setting behind designated position, stable aqueous effect will can be played, together under packer when use
When can also meet the requirement of dynamic liquid level monitoring and well-flushing, treating packer solution is honored as a queen again rises with tubing string.The low yield oil mass
The packer field application detailed process of producing well fast and stable well head Produced Liquid moisture content are as follows:
Setting process: top connection 1, which connects tubing string and goes into the well to push tubing string afterwards in place and will set, starts 11 cutting of nail, continues lower pressure pipe
Column, top connection 1 push central tube 4, upper press ring 7 and packing element axis 8 to move down the packing element 10 that gradually reduces, until packing element 10 is sat completely
Envelope.
Hydrodynamic face monitoring process: when packer top oil jacket annulus pressure is greater than packer lower part oil jacket annulus pressure
When 0.1MPa, packer upper liquid pushes well-flushing piston 3 to move upwards, until liquid pass hole exposes on packing element, packer at this time
Upper and lower oil jacket annulus connection can obtain oil well pump submergence and flowing bottomhole pressure (FBHP) by testing annular space liquid level.When packer oil
Compressed spring 2 pushes well-flushing piston 3 to reset when covering annular space two-way pressure balance, closes well-flushing passage.
Deblocking process: upper lifting pipe post, top connection 1 drive central tube 4, upper press ring 7 and packing element axis 8 to move up, and release is empty
Between packing element 10 reset, packer is integrally taken out of in well.
Claims (5)
1. a kind of packer of low yield oil mass producing well fast and stable well head Produced Liquid moisture content, including top connection (1), lower contact
(16), it is characterised in that: top connection (1) connects central tube (4), and lower contact (16) upper end is sleeved on central tube (4), with center
Manage the connection of (4) lower thread；Packing element axis (8) are threadedly coupled in the middle part of central tube (4), central tube (4) bottom thread connects sealing shroud
(13)；Packing element axis (8) upper end is set with well-flushing piston (3)；Packing element axis (8) middle and lower part is successively set with several packing elements (10), packing element
(10) the packing element axis (8) of upper and lower ends is threadedly coupled upper press ring (7), lower pressure ring (12) respectively, and packing element axis (8) is by setting starting
Nail (11) is connect with lower pressure ring (12)；Well-flushing piston (3) is threadedly coupled piston back of the body cap (6), well-flushing piston (3) and piston back of the body cap
(6) there are two opposite protection rings (5) for dress between；O-shaped ring B(17 is equipped between two opposite protection rings (5))；Well-flushing piston
(3) compressed spring (2) are set on the central tube (4) between top and top connection (1)；Lower contact (16) threaded upper ends connect sliding pin
(14)；Lower contact (16) external screw-thread connects lower pressure ring (12) lower end.
2. a kind of packer of low yield oil mass producing well fast and stable well head Produced Liquid moisture content according to claim 1,
It is characterized by: (5) one side end of protection ring is planar structure, end side is the arc cooperated with O-shaped ring B(17) circular arc
Shape structure.
3. a kind of packer of low yield oil mass producing well fast and stable well head Produced Liquid moisture content according to claim 1,
It is characterized by: being equipped with spacer ring (9) between adjacent packing element (10).
4. a kind of packer of low yield oil mass producing well fast and stable well head Produced Liquid moisture content according to claim 1,
It is characterized by: being equipped with O-shaped ring A(15 between lower pressure ring (12) and lower contact (16)).
5. a kind of packer of low yield oil mass producing well fast and stable well head Produced Liquid moisture content according to claim 1,
It is characterized by: protection ring (5) uses polytetrafluoroethylene (PTFE) material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910670118.8A CN110454114B (en) | 2019-07-24 | Packer for quickly stabilizing water content of produced fluid of wellhead of low-oil-production oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910670118.8A CN110454114B (en) | 2019-07-24 | Packer for quickly stabilizing water content of produced fluid of wellhead of low-oil-production oil well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110454114A true CN110454114A (en) | 2019-11-15 |
| CN110454114B CN110454114B (en) | 2024-11-15 |
Family
ID=
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101158280A (en) * | 2007-01-29 | 2008-04-09 | 邹积鹏 | Oil well high water-bearing layer pressure blocking method |
| US20120125641A1 (en) * | 2010-11-22 | 2012-05-24 | Boise State University | Modular hydraulic packer-and-port system |
| CN103256017A (en) * | 2013-03-11 | 2013-08-21 | 盐城市鑫源石化机械有限公司 | High-pressure water injection packer |
| CN104653144A (en) * | 2013-11-19 | 2015-05-27 | 中国石油天然气股份有限公司 | Compression packer for oil well large pressure difference washable well |
| CN105317394A (en) * | 2014-06-26 | 2016-02-10 | 天津市正瀚石油设备制造有限公司 | High-temperature-resistant and high-pressure-bearing packer special for oil drilling |
| CN210829170U (en) * | 2019-07-24 | 2020-06-23 | 中国石油天然气股份有限公司 | Packer for quickly stabilizing water content of wellhead produced liquid of low-oil-production oil well |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101158280A (en) * | 2007-01-29 | 2008-04-09 | 邹积鹏 | Oil well high water-bearing layer pressure blocking method |
| US20120125641A1 (en) * | 2010-11-22 | 2012-05-24 | Boise State University | Modular hydraulic packer-and-port system |
| CN103256017A (en) * | 2013-03-11 | 2013-08-21 | 盐城市鑫源石化机械有限公司 | High-pressure water injection packer |
| CN104653144A (en) * | 2013-11-19 | 2015-05-27 | 中国石油天然气股份有限公司 | Compression packer for oil well large pressure difference washable well |
| CN105317394A (en) * | 2014-06-26 | 2016-02-10 | 天津市正瀚石油设备制造有限公司 | High-temperature-resistant and high-pressure-bearing packer special for oil drilling |
| CN210829170U (en) * | 2019-07-24 | 2020-06-23 | 中国石油天然气股份有限公司 | Packer for quickly stabilizing water content of wellhead produced liquid of low-oil-production oil well |
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