CN201050329Y - Well mouth pressure testing packer - Google Patents
Well mouth pressure testing packer Download PDFInfo
- Publication number
- CN201050329Y CN201050329Y CNU2007201435148U CN200720143514U CN201050329Y CN 201050329 Y CN201050329 Y CN 201050329Y CN U2007201435148 U CNU2007201435148 U CN U2007201435148U CN 200720143514 U CN200720143514 U CN 200720143514U CN 201050329 Y CN201050329 Y CN 201050329Y
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- CN
- China
- Prior art keywords
- packing element
- compression
- packer
- packer rubber
- pressure testing
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- Expired - Fee Related
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses a wellhead pressure test packer for the wellhead pressure test in oil fields, which is composed of a pressure transmission joint, a regulating ring, a wedged packer rubber, a packer rubber seat, a sliding sleeve, a compression packer rubber, a caulking ring, a confined ring, a single flow joint and a central tube. The wedged packer rubber is in a bowl-shaped structure with larger outer diameter, while the compression packer rubber is hollow cylindrical-shaped with smaller outer diameter. When in the pressure test, the wedged packer rubber after the compression is in vigorous extrusion on the compression packer rubber, so that the radial expansion of the compression packer rubber is generated to achieve the packing. Thus the oil field casing corrosion and the change in inner diameter can be well adapted with high reliability and easy operation. The casing setting is labour saving with wear resistant packer rubber. Moreover the packing can be implemented for the compression from the tubing or casing.
Description
Technical field
The utility model relates to the well head pressure testing packer that a kind of oil field shaft mouth pressure testing is used.
Background technology
In the oilfield downhole operation work progress, all will carry out pressure testing to well head and blowout preventer with well head pressure testing packer before the perforations adding and after changing well head, whether check reaches the well control designing requirement, can carry out next step construction after pressure testing is qualified.Original compression packing element formula packer aims at downhole designs, can not adapt to the corrosion and the internal diameter varies of sleeve pipe, usually can't seal by seat during pressure testing, causes the pressure testing failure.Though and another kind of wedging packing element formula packer seat envelope, easy to use easily, packing element intensity is low, very easily damages in the use, can not adapt to the needs of well head pressure testing.
Summary of the invention
The purpose of this utility model is to provide a kind of can adapt to sleeve in oil field corrosion and internal diameter varies well, the reliability height, easy to operate, laborsaving when being lowered to sleeve pipe, packing element is wear-resistant, and from oil pipe or sleeve pipe suppress can both the seat envelope well head pressure testing packer.
For achieving the above object, the utility model is made up of pressure transmission joint, adjustable ring, wedging formula packing element, glue tube base, sliding sleeve, compression packing element, spacer ring, bearing ring, uniflow joint and central tube.The pressure transmission hole that is interlinked to the outside in pressure transmission joint middle part has, the thread connection adjustable ring is used in the outside, lower end, lower end internal interface central tube, wedging formula packing element, glue tube base, sliding sleeve, compression packing element, spacer ring, bearing ring are enclosed within on the central tube successively.On the glue tube base inwall sealing ring is arranged, wedging formula packing element is a bowl structure, and external diameter is greater than the internal diameter of respective sleeve, and the compression packing element is a hollow cylindrical, and external diameter is less.Central tube other end order stream joint, there are single current valve ball and valve ball cover in uniflow joint inside.
Adopted after the said structure, tubing string is inner and oily because the pressure transmission hole on the pressure transmission joint makes, the collar-shaped space communicates, and therefore no matter suppresses from oil pipe or sleeve pipe, can both make well head pressure testing packer set, and on-the-spot pipeline connects convenient.The wedging formula packing element that external diameter is big is a bowl structure, easily produces distortion, and the high compression packing element external diameter of hardness is less, so the resistance of well head pressure testing packer when being lowered to sleeve pipe is little.Single current valve ball in the uniflow joint can seal up the pressure that transmits from central tube, and when the pressure of parts casing pipe under the single current valve ball is high, the single current valve ball will be opened pressure release, thereby can not produce " water plug " phenomenon when making well head pressure testing packer be lowered to sleeve pipe, and is easy to operate.
Wedging formula packing element external diameter is big, easily produce distortion, be close to sealing with the internal surface of sleeve pipe of various internal diameters easily, when suppressing, promote glue tube base to lower slider, push the compression packing element energetically, make it produce expanded radially, jam-packed central tube outer wall and internal surface of sleeve pipe, form more reliable sealing, so the utility model well head pressure testing packer compliance is strong, sealing is reliable.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is the sectional view of a specific embodiment of the utility model well head pressure testing packer.
Fig. 2 is the work schematic diagram of a specific embodiment of the utility model well head pressure testing packer.
Fig. 3 is the sectional view of the wedging formula packing element of well head pressure testing packer shown in Figure 1.
Fig. 4 is the sectional view of the compression packing element of well head pressure testing packer shown in Figure 1.
The specific embodiment
As shown in Figure 2: during pressure testing, dress blowout preventer 17 on the well head big four 18, the utility model well head pressure testing packer is connected on the tubing string 16, passes blowout preventer 17 and well head big four 18 is lowered in the sleeve pipe 19.Wedging formula packing element 5 external diameters are big, cooperate closely with sleeve pipe 19 inwalls, and seat seals easily, and bowl structure makes its easier compressive strain, can reduce the friction with sleeve pipe 19 inwalls.Though and compression packing element 8 hardness height, external diameter is little, the resistance of packer, the wearing and tearing that can alleviate packing element are again pressed in the oral examination that therefore can reduce to go into the well.
Because wedging formula packing element 5 also can form sealing with sleeve pipe 19 inwalls when not suppressing, when well head pressure testing packer was lowered to sleeve pipe 19, the liquid in the sleeve pipe 19 was difficult for discharging, and formed the piston type sealing in sleeve pipe 19, cause " water plug " phenomenon, the pressure testing tubing string can't be transferred.For this reason, in the lower end of well head pressure testing packer uniflow joint 13 is arranged, when the pressure in the sleeve pipe 19 was high, the single current valve ball 15 in the uniflow joint 13 will be opened pressure release, made the oral examination of going into the well press packer more convenient.
During pressure testing, close blowout preventer 17, when when tubing string 16 is suppressed, the single current valve balls 15 in the uniflow joint 13 are closed, and seal up the pressure in the central tube 11, the pressure transmission hole 2 of pressure testing liquid on pressure transmission joint 1 enters oil, the collar-shaped space on wedging formula packing element 5 tops, promote wedging formula packing element 5 and glue tube base 6 and move down, push compression packing element 8 energetically, make it produce expanded radially, form tighter sealing, therefore the reliability height of seat envelope.
When needs during by the gate pressure testing on the well head big four 18, only need add a plug in the upper end of tubing string 16, just can make well head pressure testing packer set, finish pressure testing.
Use the utility model well head pressure testing packer in, also finished pressure testing, kill two birds with one stone the blowout preventer 17 of well head to the well head pressure testing.
For adapting to different pressure testing requirements, as improvement of the present utility model, described compression packing element 8 can be 1 to 3 cover, and such variation is all within protection domain of the present utility model.
Claims (2)
1. well head pressure testing packer, it comprises: pressure transmission joint (1), adjustable ring (3), wedging formula packing element (5), glue tube base (6), sliding sleeve (4), compression packing element (8), spacer ring (9), bearing ring (12), uniflow joint (13) and central tube (11), it is characterized in that: the pressure transmission hole (2) that is interlinked to the outside in pressure transmission joint (1) middle part has, the outside, lower end thread connection adjustable ring (3), lower end internal interface central tube (11); Wedging formula packing element (5), glue tube base (6), sliding sleeve (4), compression packing element (8), spacer ring (9), bearing ring (12) are enclosed within on the central tube (11) successively; On glue tube base (6) inwall sealing ring (7) is arranged; Wedging formula packing element (5) is a bowl structure, and external diameter is greater than the internal diameter of respective sleeve (19); Compression packing element (8) is a hollow cylindrical, and external diameter is less; Central tube (11) other end order stream joint (13), there are single current valve ball (15) and valve ball cover (14) in uniflow joint (13) inside.
2. well head pressure testing packer according to claim 1 is characterized in that: the quantity of described compression packing element (8) is 1 to 3 cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201435148U CN201050329Y (en) | 2007-04-10 | 2007-04-10 | Well mouth pressure testing packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201435148U CN201050329Y (en) | 2007-04-10 | 2007-04-10 | Well mouth pressure testing packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201050329Y true CN201050329Y (en) | 2008-04-23 |
Family
ID=39336813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201435148U Expired - Fee Related CN201050329Y (en) | 2007-04-10 | 2007-04-10 | Well mouth pressure testing packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201050329Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018805A (en) * | 2014-06-16 | 2014-09-03 | 中国海洋石油总公司 | Dual-rubber-sleeve thermal recovery packer |
| CN107345478A (en) * | 2016-05-06 | 2017-11-14 | 中国石油化工股份有限公司 | A kind of Bidirectional-squeezing formula packer body |
| CN107630696A (en) * | 2017-09-11 | 2018-01-26 | 中国石油化工股份有限公司 | The underground pressure testing device and its pressure-measuring method of a kind of ground blowout hookup |
| CN109931024A (en) * | 2019-03-14 | 2019-06-25 | 河南福侨石油装备有限公司 | A kind of slideway compression packer |
-
2007
- 2007-04-10 CN CNU2007201435148U patent/CN201050329Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018805A (en) * | 2014-06-16 | 2014-09-03 | 中国海洋石油总公司 | Dual-rubber-sleeve thermal recovery packer |
| CN107345478A (en) * | 2016-05-06 | 2017-11-14 | 中国石油化工股份有限公司 | A kind of Bidirectional-squeezing formula packer body |
| CN107630696A (en) * | 2017-09-11 | 2018-01-26 | 中国石油化工股份有限公司 | The underground pressure testing device and its pressure-measuring method of a kind of ground blowout hookup |
| CN109931024A (en) * | 2019-03-14 | 2019-06-25 | 河南福侨石油装备有限公司 | A kind of slideway compression packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080423 |