CN101333916A - Closed well washing device - Google Patents
Closed well washing device Download PDFInfo
- Publication number
- CN101333916A CN101333916A CNA2008101409960A CN200810140996A CN101333916A CN 101333916 A CN101333916 A CN 101333916A CN A2008101409960 A CNA2008101409960 A CN A2008101409960A CN 200810140996 A CN200810140996 A CN 200810140996A CN 101333916 A CN101333916 A CN 101333916A
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- well washing
- leather cup
- oil
- ring
- lining
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Abstract
The invention belongs to the petroleum exploitation field and provides a well washing device which can seal the annular space between the oil pipe and the casing and avoid the well washing water from polluting the oil layer. The sealing well washing device comprises an eccentric well washing valve and a leather cup packer; the leather cup packer is arranged on the oil pipe under the eccentric well washing valve; the leather cup packer divides the annular casing space between the oil and the casing into an upper part and a lower part; the eccentric well washing valve is provided with a pressure switch device used for controlling the conduction and closing of the annular casing space and the space inside the oil pipe. The well washing device avoids the well washing water from contacting with the oil layer while satisfying the well washing requirement of the pumping unit production well, maintains the porosity and permeability of the production layer without affecting the yield of the crude oil. The technical proposal provided by the invention is adopted so that the water consumption is less. Under the same condition, if the general well washing method is adopted, the water consumption is 23 cubic meters in volume and the time is 4-5 hours. If the technical proposal of the well washing device is adopted, the water consumption is only 5 cubic meters in volume and the time is 90 minutes.
Description
Technical field
The invention belongs to the oil development field, is a kind of sealing oil pipe and sleeve pipe annular space, avoids the well washing apparatus of well-flushing water polluted reservoir.
Background technology:
At present, the well-flushing mode taked owing to the tube inner wall wax deposition of oil development field pumping production well all is open well-flushings.This well-flushing mode is that the well-flushing water that will heat is directly squeezed into oil pipe and sleeve pipe annular space, behind the shaft bottom, is extracted out through oil pipe by oil well pump, and this just causes well-flushing water to contact with oil reservoir, and then changes the degree of porosity and the permeability of oil reservoir, influences crude output.Particularly for the lower oil well of formation pressure, well-flushing water can enter oil reservoir, causes oil well not fuel-displaced.
Summary of the invention:
In order to overcome the deficiency of existing open well-flushing mode, the invention provides a kind of closed well washing device, this device can solve the problem that well-flushing water directly contacts with oil reservoir.
Technical scheme provided by the invention is:
Closed well washing device, comprise eccentric flushing valve and cup packer, on the oil pipe under the eccentric flushing valve, cup packer is set, cup packer is divided into two parts up and down with the ring set space sealing between oil pipe and the sleeve pipe, eccentric flushing valve is provided with pressure switch apparatus, and the space is communicated with and closes in control ring set space and the oil pipe.
Tie the closed well washing device of contacting on the cured some bottom oil pipe at oil well.
Described eccentric flushing valve comprises oil-through hole and pressure controling hole, oil-through hole is installed with oil pipe is concentric, there is flowing hole to be communicated with between pressure controling hole and the oil-through hole, pressure controling hole top is fixed with female stifled, fixedly install below female stifled and ball sealer is set below spring, the spring, it is trapezoidal greatly that the cutting plane of ball sealer locating ring inwall is little top, the end, and ball sealer locating ring, sealed ball seat and sealed ball seat pressure cap are fixedly connected sequentially from top to bottom.
The internal diameter of described sealed ball seat is less than the internal diameter of sealed ball seat pressure cap.
Leather cup seat locating ring, leather cup seat, leather cup, lining, compression lining mother encircle, are equipped with cap and compression lining public affairs are encircled, leather cup seat locating ring is fixed on the oil pipe, the leather cup seat is arranged on above the leather cup seat locating ring, leather cup is arranged on the leather cup seat, and leather cup is cone, and lining is close to oil pipe and on leather cup, be provided with the female ring of compression lining above the lining, screwed connection between female ring of compression lining and the public ring of compression lining is equipped with cap and is arranged on the public ring of compression lining, and is close to the female ring of compression lining.
Connect to connect under the box cupling cup packer is set.
Leather cup upper end external diameter is greater than casing inner diameter.
Can be according to circumstances in actual the use, excessive etc. as well-flushing water pressure, increase the quantity of leather cup, satisfy actual requirement.
The present invention avoids well-flushing water to contact with oil reservoir when satisfying pumping production well well-flushing, keeps the degree of porosity and the permeability of producing zone position, does not influence crude output.Adopt technical scheme provided by the invention, water supply volume is few.Under same condition, adopt conventional pumping and washing process, need 23 cubes of water, 4-5 hour.Adopt technical scheme provided by the invention, only need 5 cubes of water, 90 minutes.
Description of drawings
Fig. 1 is a sectional view of the present invention
Fig. 2 is an A-A sectional view among Fig. 1
The female ring 6 of sleeve pipe 1 leather cup seat locating ring 2 leather cup seats, 3 leather cup 4 linings, 5 compression linings is equipped with the public ring 8 of cap 7 compression linings and connects box cupling 9 female stifled 10 springs, 11 flowing holes, 12 ball sealers, 13 sealed ball seat locating rings, 14 ball sealer ball seats, 15 ball sealer ball seat pressure caps, 16 oil pipes, 17 oil-through holes, 18 pressure controling holes 19
Specific embodiment
Comprise eccentric flushing valve and cup packer in this enforcement.
Present embodiment is tied below the cured point at oil well and is contacted with oil pipe.
The oil-through hole of eccentric flushing valve is installed with oil pipe is concentric, and pressure controling hole is arranged on a side of oil-through hole.Being provided with flowing hole between pressure controling hole and the oil-through hole is communicated with.It is female stifled that the pressure controling hole internal upper part is provided with, and with the pressure controling hole screwed connection.Female stifled spring that is arranged with, the spring lower end connects a ball sealer.The pressure controling hole bottom is provided with ball sealer ball seat pressure cap, and with the pressure controling hole screwed connection.Be provided with the ball sealer ball seat above the ball sealer ball seat pressure cap.Ball sealer ball seat pressure cap plays the support positioning action to the ball sealer ball seat.Ball sealer ball seat locating ring aligns the position of ball sealer and ball sealer ball seat on the ball sealer ball seat.
Eccentric flushing valve is connected with following oil pipe by connecting box cupling.
Oil pipe is provided with cup packer below the eccentric flushing valve.
Leather cup seat locating ring, leather cup seat, leather cup, lining, compression lining mother encircle, are equipped with cap and compression lining public affairs are encircled, leather cup seat locating ring is fixedly welded on the oil pipe, the leather cup seat is arranged on above the leather cup seat locating ring, leather cup is arranged on the leather cup seat, and it is bowl-shape that leather cup is, and lining is close to oil pipe and on leather cup, be provided with the female ring of compression lining above the lining, screwed connection between female ring of compression lining and the public ring of compression lining is equipped with cap and is arranged on the public ring of compression lining, and is close to the female ring of compression lining.
Connect the public ring of compression lining below the connection box cupling.
By adjusting the screwed connection of public ring of compression lining and the female ring of compression lining, position relation about adjusting compression lining public affairs ring and compressing between the female ring of lining, purpose is to concern by the position that lining is fixed and clamped between leather cup, leather cup seat and the leather cup seat locating ring three.After adjust the position of public ring of compression lining and the female ring of compression lining, tighten cap fully again, prevent that the position of compressing public ring of lining and the female ring of compression lining is moved.
Leather cup upper end external diameter is greater than casing inner diameter.
In use, pressure well-flushing car injects the well-flushing water of high temperature to oil jacket space inner high voltage by production tree.After well-flushing water arrives the location point of present embodiment installation,, no longer flow downward because cup packer is divided into two parts up and down with the ring set space sealing between oil pipe and the sleeve pipe.Continue water filling, the pressure of water is increasing in the oil jacket space on cup packer.When this numerical value during greater than certain particular value, well-flushing water will back down ball sealer, enters in the oil pipe by flowing hole.The well-flushing water that enters in the oil pipe is extracted ground out by oil pumper, finishes whole washing well process.
In whole washing well process, well-flushing water does not contact with the oil recovery oil reservoir, can not exert an influence to the reservoir geology situation.
Should be noted that at last: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or the part technical characterictic is equal to replacement the specific embodiment of the present invention; And not breaking away from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (7)
1, closed well washing device, it is characterized in that comprising eccentric flushing valve and cup packer, on the oil pipe under the eccentric flushing valve, cup packer is set, cup packer is divided into two parts up and down with the ring set space sealing between oil pipe and the sleeve pipe, eccentric flushing valve is provided with pressure switch apparatus, and the space is communicated with and closes in control ring set space and the oil pipe.
2,, it is characterized in that the closed well washing device of on cured some bottom oil pipe of oil well knot, contacting according to the described closed well washing device of claim 1.
3, according to the described closed well washing device of claim 1, it is characterized in that described eccentric flushing valve comprises oil-through hole and pressure controling hole, oil-through hole is installed with oil pipe is concentric, there is flowing hole to be communicated with between pressure controling hole and the oil-through hole, pressure controling hole top is fixed with female stifled, fixedly install below female stifled and ball sealer is set below spring, the spring, it is trapezoidal greatly that the cutting plane of ball sealer locating ring inwall is little top, the end, and ball sealer locating ring, sealed ball seat and sealed ball seat pressure-pad are fixedly connected sequentially from top to bottom.
4 according to claim 1 or 3 closed well washing devices, it is characterized in that the internal diameter of the internal diameter of described sealed ball seat less than the sealed ball seat pressure-pad.
5, according to the described closed well washing device of claim 1, it is characterized in that cup packer comprises leather cup seat locating ring, the leather cup seat, leather cup, lining, the female ring of compression lining, be equipped with cap and the public ring of compression lining, leather cup seat locating ring is fixed on the oil pipe, the leather cup seat is arranged on above the leather cup seat locating ring, leather cup is arranged on the leather cup seat, leather cup is cone, lining is close to oil pipe and on leather cup, be provided with the female ring of compression lining above the lining, screwed connection between female ring of compression lining and the public ring of compression lining, be equipped with cap and be arranged on the public ring of compression lining, and be close to the female ring of compression lining.
6,, it is characterized in that connecting under the box cupling connecting cup packer is set according to claim 1 or 5 described closed well washing devices.
7,, it is characterized in that leather cup upper end external diameter is greater than casing inner diameter according to claim 1 or 5 described closed well washing devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101409960A CN101333916B (en) | 2008-08-07 | 2008-08-07 | Closed well washing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101409960A CN101333916B (en) | 2008-08-07 | 2008-08-07 | Closed well washing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101333916A true CN101333916A (en) | 2008-12-31 |
| CN101333916B CN101333916B (en) | 2012-07-18 |
Family
ID=40196753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101409960A Expired - Fee Related CN101333916B (en) | 2008-08-07 | 2008-08-07 | Closed well washing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101333916B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242621A (en) * | 2011-07-18 | 2011-11-16 | 天津市滨海新区龙新石油机械制造有限公司 | Negative pressure de-plugging and oil extraction process and device |
| CN101748990B (en) * | 2009-12-11 | 2012-09-19 | 东营百华石油技术开发有限公司 | Releasing packer well-washing device |
| RU2529067C1 (en) * | 2013-06-17 | 2014-09-27 | Открытое акционерное общество "Татнефть" имени В.Д. Шашина | Device for well bottom flushing |
| CN104818961A (en) * | 2015-05-05 | 2015-08-05 | 阜新晟氟利高分子材料有限公司 | Temperature-control thermal flushing switch for heavy oil thermal production well |
| CN105443052A (en) * | 2014-08-27 | 2016-03-30 | 中国石油天然气股份有限公司 | Method for determining setting depth of hollow sucker rod for oil well washing |
| CN111594079A (en) * | 2020-06-02 | 2020-08-28 | 任丘市凯晟石油机械制造有限公司 | Oil well positive well-flushing device |
| CN112664153A (en) * | 2019-10-16 | 2021-04-16 | 中国石油化工股份有限公司 | Ball-free type sand setting backwashing device and method |
| CN114837610A (en) * | 2021-02-02 | 2022-08-02 | 中国石油天然气股份有限公司 | Damaged petroleum casing pipe plugging device and method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2128668Y (en) * | 1992-06-26 | 1993-03-24 | 辽河石油勘探局茨榆坨采油厂 | Diverter |
| CN2213839Y (en) * | 1994-05-16 | 1995-11-29 | 唐山龙加电子技术开发有限公司 | Protect board type cup leather packer |
| AU2003285257A1 (en) * | 2002-12-06 | 2004-06-30 | Tesco Corporation | Seal cup for a wellbore tool and method |
| US7434616B2 (en) * | 2005-05-27 | 2008-10-14 | Halliburton Energy Services, Inc. | System and method for fluid control in expandable tubing |
| CN201027526Y (en) * | 2007-05-17 | 2008-02-27 | 赵春昶 | Supercharging equilibration packer |
| CN201236649Y (en) * | 2008-08-07 | 2009-05-13 | 晁建伟 | Closed flushing apparatus |
-
2008
- 2008-08-07 CN CN2008101409960A patent/CN101333916B/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748990B (en) * | 2009-12-11 | 2012-09-19 | 东营百华石油技术开发有限公司 | Releasing packer well-washing device |
| CN102242621A (en) * | 2011-07-18 | 2011-11-16 | 天津市滨海新区龙新石油机械制造有限公司 | Negative pressure de-plugging and oil extraction process and device |
| CN102242621B (en) * | 2011-07-18 | 2014-03-26 | 天津市滨海新区龙新石油机械制造有限公司 | Negative pressure de-plugging and oil extraction process and device |
| RU2529067C1 (en) * | 2013-06-17 | 2014-09-27 | Открытое акционерное общество "Татнефть" имени В.Д. Шашина | Device for well bottom flushing |
| CN105443052B (en) * | 2014-08-27 | 2017-10-17 | 中国石油天然气股份有限公司 | A kind of determination method of oil well cleanup hollow rod depth of setting |
| CN105443052A (en) * | 2014-08-27 | 2016-03-30 | 中国石油天然气股份有限公司 | Method for determining setting depth of hollow sucker rod for oil well washing |
| CN104818961B (en) * | 2015-05-05 | 2017-08-18 | 阜新晟氟利高分子材料有限公司 | Thick oil thermal extraction temperature control heating power well washing switch |
| CN104818961A (en) * | 2015-05-05 | 2015-08-05 | 阜新晟氟利高分子材料有限公司 | Temperature-control thermal flushing switch for heavy oil thermal production well |
| CN112664153A (en) * | 2019-10-16 | 2021-04-16 | 中国石油化工股份有限公司 | Ball-free type sand setting backwashing device and method |
| CN112664153B (en) * | 2019-10-16 | 2022-12-13 | 中国石油化工股份有限公司 | Ball-free type sand setting backwashing device and method |
| CN111594079A (en) * | 2020-06-02 | 2020-08-28 | 任丘市凯晟石油机械制造有限公司 | Oil well positive well-flushing device |
| CN114837610A (en) * | 2021-02-02 | 2022-08-02 | 中国石油天然气股份有限公司 | Damaged petroleum casing pipe plugging device and method |
| CN114837610B (en) * | 2021-02-02 | 2024-03-26 | 中国石油天然气股份有限公司 | Broken petroleum casing plugging device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101333916B (en) | 2012-07-18 |
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| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chao Jianwei Inventor after: Fan Xiyan Inventor after: Dong Lianhe Inventor after: Wang Chuanming Inventor after: Tian Lei Inventor before: Chao Jianwei Inventor before: Fan Xiyan Inventor before: Dong Lianhe Inventor before: Wang Chuanming |
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Free format text: CORRECT: INVENTOR; FROM: CHAO JIANWEI FAN XIYAN DONG LIANHE WANG CHUANMING TO: CHAO JIANWEI FAN XIYAN DONG LIANHE WANG CHUANMING TIAN LEI |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chao Jianwei Inventor after: Fan Xiyan Inventor after: Dong Lianhe Inventor after: Wang Chuanming Inventor after: Ji Lichao Inventor after: Tian Lei Inventor before: Chao Jianwei Inventor before: Fan Xiyan Inventor before: Dong Lianhe Inventor before: Wang Chuanming Inventor before: Tian Lei |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: CHAO JIANWEI FAN XIYAN DONG LIANHE WANG CHUANMING TIAN LEI TO: CHAO JIANWEI FAN XIYAN DONG LIANHE WANG CHUANMING JI LICHAO TIAN LEI |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120718 Termination date: 20130807 |