CN202348212U - Annular hydraulic compression type packer - Google Patents
Annular hydraulic compression type packer Download PDFInfo
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- CN202348212U CN202348212U CN 201120533957 CN201120533957U CN202348212U CN 202348212 U CN202348212 U CN 202348212U CN 201120533957 CN201120533957 CN 201120533957 CN 201120533957 U CN201120533957 U CN 201120533957U CN 202348212 U CN202348212 U CN 202348212U
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- joint
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- sealing
- center tube
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Abstract
The utility model discloses an annular hydraulic compression type packer. The packer comprises an upper joint, a lower joint and an auxiliary seat sealing assembly, a seat sealing assembly as well as an unsealing assembly mounted between the upper joint and the lower joint, wherein the unsealing assembly comprises an upper joint and a central spindle; the central spindle is provided with an unsealing joint in a connecting manner; the auxiliary seat sealing assembly comprises an outer shaft and a leather cup assembly both sleeved outside the central spindle, a blocking cap, a protective cylinder, a sealing joint and a sealing ring; the leather cup assembly is in contact with the end face of the blocking cap; the protective cylinder is in threaded connection with the blocking cap; the sealing joint is in contacted with the end face of the sealing ring and is mounted in the protective cylinder; the seat sealing assembly comprises a pressing cap connected with the protective cylinder; the pressing cap is connected with a lower central pipe; a rubber cylinder, a seat sealing joint, a fixing joint and a locking joint are sequentially arranged outside the lower central pipe and below the pressing cap; an outer sleeve is arranged between the seat sealing joint and the lower joint; the unsealing joint and the lower central pipe are fixed through first shear pins; and the outer shaft and the lower central pipe are provided with fluid intake holes. The annular hydraulic compression type packer has the advantages of easy seat sealing and capabilities of satisfying with requirements on sealing and separating a ground layer or main shaft annulus and unsealing.
Description
Technical field
The utility model relates to the oil and gas exploitation technical field, particularly relates to a kind of annular space fluid power compression packer that is used for high angle hole, testing strata of horizontal well packing stratum or mineshaft annulus.
Background technology
The formation testing technology of in the straight well cased well, using at present mainly contains MFE formation testing technology and APR formation testing technology; In the open hole well formation testing, mainly adopt inflatable packer.
Formation tester is made up of Test Switchboard valve, pressure gauge, packer etc.Packer as the formation tester critical component adopts methods such as rotation, pressurization ballast to set more.MFE formation testing technology adopts the instrument of PT packer as the packing stratum, and APR formation testing technology adopts the instrument of RTTS packer as the packing stratum.These two kinds of packers all are after adopting mechanical-set method to make the transposition of packer inversion mechanism, to rely on the tubing string ballast and make the packing element demi-inflation, realize packer setting.Promptly use oil pipe (or drilling rod) with packer down to projected depth, upper lifting pipe post certain altitude, rotate a few after, transfer tubing string pressurization and make packer setting, reach the purpose on packing stratum.In the open hole well formation testing, mainly adopt the instrument of inflatable packer as the packing stratum, rely on well head rotation tubing string to drive the expanded downhole pump and realize setting.
But in high angle hole, horizontal well stratum formation testing test; Because the particularity of its casing programme and track; Operations such as the packer setting in the existing formation tester can not be rotated, the ballast that pressurizes promptly do not suit in high angle hole, horizontal well, to use, and other fluid power set packer all are in tubing string, to suppress; Can not realize hollow in the tubing string, therefore can't satisfy the needs of horizontal well formation testing test technology.
Summary of the invention
The purpose of the utility model provides a kind of suppressing through fluid power from the annular space (abbreviation annular space) that forms between oil pipe (or drilling rod) and the sleeve pipe and realizes the packer that sets; Be used for horizontal well formation testing test packing stratum or mineshaft annulus; Through with the supporting application of formation tester switch valve; Reach make empty in the tubing string, the stratum is produced negative pressure, and then carry out horizontal well formation testing test.
For this reason, the technical scheme of the utility model is following:
A kind of annular space fluid power compression packer comprises: top connection, lower contact and be installed in auxiliary between the lower contact and set assembly, set assembly and deblocking assembly, and said deblocking assembly comprises top connection and the mandrel that is threaded, and is connected under the mandrel and separates sealing joint; The said auxiliary assembly that sets comprises the outer shaft that is enclosed within the mandrel outside and is installed in leather cup assembly, retaining cap, casing, seal nipple and the sealing ring on the outer shaft from top to bottom; Said leather cup assembly is enclosed within on the outer shaft and with retaining cap end face and contacts; Said casing with the retaining cap through being threaded; Seal nipple and sealing ring end face contact, and are loaded in the casing; The said assembly that sets comprises the pressure cap that is connected with casing, and pressure cap is connected with lower center tube, and lower center tube is outer, packing element is housed successively below the pressure cap, set joint, anchor tip and locked joints; Overcoat is housed setting between joint and the lower contact, the deblocking assembly separate sealing joint and lower center tube is fixed through the 1st shear pin, on outer shaft and lower center tube, be provided with inlet opening.
The upper end of said outer shaft is arranged between top connection lower end and the mandrel, in the top connection and the outer axial interface outside helmet is installed, and helmet is threaded with top connection and surely follows closely through the 1st and fixes.
Said casing is fixing through the 2nd steady nail with the retaining cap.
Said anchor tip and the lower center tube that sets assembly fixed through the 2nd shear pin, and lower contact and urceolus are fixed through the 3rd shear pin, and lower contact and lower center tube are fixing through the 3rd steady nail.
The annular space fluid power compression packer of the utility model is used in high angle hole or testing strata of horizontal well; Through with the supporting application of formation tester switch valve; Realize horizontal well packing stratum or mineshaft annulus and make hollow in the tubing string in test; The stratum negative pressure is flowed, satisfied horizontal well formation testing test technology needs.Annular space fluid power compression packer applies certain hydraulic pressure from the annular space between oil pipe and the sleeve pipe just can make packer realize design action, does not need ground rotation tubing string, does not also need ground ballast pressurization.After accomplishing test job, the upper lifting pipe post can make the packer deblocking.Its compact conformation, reliable operation, and simple to operate.
Description of drawings
Fig. 1 is the structural representation of the annular space fluid power compression packer of the utility model;
Fig. 2 is the casing programme sketch map.
The specific embodiment
Combine accompanying drawing and specific embodiment that the structure of the utility model is elaborated down.
A kind of annular space fluid power compression packer comprises: top connection 1, lower contact 25 and be installed in auxiliary between the lower contact and set assembly, set assembly and deblocking assembly.Said deblocking assembly comprises: the top connection 1 and the mandrel 4 that are threaded, mandrel is connected to for 4 times separates sealing joint 14.Saidly auxiliary set assembly and comprise: be enclosed within the outside outer shaft 5 of mandrel 4 and be installed in leather cup assembly 6, retaining cap 7, casing 9, seal nipple 10 and the sealing ring 11 on the outer shaft 5 from top to bottom; Leather cup assembly 6 is enclosed within on the outer shaft 5 and with retaining cap 7 end faces and contacts; Casing 9 with the retaining cap 7 through being threaded; Seal nipple 10 contacts with sealing ring 11 end faces, and is loaded in the casing 9.The said assembly that sets comprises the pressure cap 12 that is connected with casing 9, and pressure cap 12 is connected with lower center tube 22, and lower center tube 22 is outer, packing element 13 is housed successively below the pressure cap 12, set joint 15, anchor tip 18 and locked joints 21.Overcoat 20 is housed setting between joint 15 and the lower contact 25, the deblocking assembly to separate sealing joint 14 fixing through the 1st shear pin 16 with lower center tube 22, on outer shaft 5 and lower center tube 22, be provided with inlet opening.
The upper end of outer shaft 5 is arranged between top connection 1 lower end and the mandrel 4, in the top connection 1 and the outer shaft 5 interfaces outside helmet 3 is installed, and helmet 3 is threaded with top connection 1 and surely nail 2 is fixing through the 1st.
Surely nail 8 is fixing through the 2nd with retaining cap 7 for said casing 9.The said anchor tip 18 that sets assembly is fixed through the 2nd shear pin 19 with lower center tube 22, and lower contact 25 and urceolus 20 are fixing through the 3rd shear pin 23, and lower contact 25 passes through the 3rd with lower center tube 22, and surely nail 24 is fixing.
Below in conjunction with Fig. 2 the method for using that the annular space of the utility model sets hydraulic packer is described.Wherein, 26 is that sleeve pipe, 27 is that oil pipe, 28 is that pump open circulation valve, 29 is that formation tester, 30 is manometer for annular space sets hydraulic packer, 31.
During on-the-spot the use, oil pipe 27 connects formation tester 29, formation tester 29 lower ends connect packer 30, and described connection all is the tubing round thread buckle.Above-mentioned process pipe string is lowered in the sleeve pipe 26, and hydraulic packer 30 setting positions are positioned at more than the oil-gas-water layer, when needing packer set; Squeeze into the liquid of certain pressure in the annular space that between oil pipe and sleeve pipe 26, forms with surface pump, rely on upper-turn-type to apply the wear-resisting leather cup assembly 6 of copper and form and set initial pressure, liquid gets into from the inlet opening of packer outer shaft 5; Annular space along outer shaft 5 and mandrel 4 is descending; Get into the annular seal space that sets joint 15 and lower center tube 22 formation from the inlet opening of lower center tube 22, when pressure reached certain value, shear pin 23 was cut off; It is up with urceolus 20 to set joint 15; Compression packing element 13, the locking screw thread on the locked joints 21 pins urceolus 20, realizes packer setting.
When accomplishing test and needing deblocking, on carry oil pipe 27, oil pipe drive top connection 1; Top connection 1 connects mandrel 4 and lower center tube 22, and mandrel 4 connects separates sealing joint 14, when pulling force reaches certain value; Shear pin 16 is cut off, and it is up that top connection 1 drives mandrel 4 reconciliation sealing joints 14.Simultaneously, it is up with seal nipple 10 that top connection 1 drives outer shaft 5 through helmet 3, and seal nipple 10 end face seals are opened, and it is up that seal nipple 10 drives lower center tube 22 continuation, and packing element 13 recovers the packer deblocking.
Claims (4)
1. annular space fluid power compression packer; It is characterized in that: comprise top connection (1), lower contact (25) and be installed in auxiliary between the lower contact setting assembly, setting assembly and deblocking assembly; Said deblocking assembly comprises top connection (1) and the mandrel (4) that is threaded, and is connected under the mandrel (4) and separates sealing joint (14); The said auxiliary assembly that sets comprises the outer shaft (5) that is enclosed within mandrel (4) outside and is installed in leather cup assembly (6), retaining cap (7), casing (9), seal nipple (10) and the sealing ring (11) on the outer shaft (5) from top to bottom; Said leather cup assembly (6) is enclosed within outer shaft (5) and upward and with retaining cap (7) end face contacts; Said casing (9) with the retaining cap (7) through being threaded; Seal nipple (10) and sealing ring (11) end face contact, and are loaded in the casing (9); The said assembly that sets comprises the pressure cap (12) that is connected with casing (9), and pressure cap (12) is connected with lower center tube (22), and lower center tube (22) is outer, packing element (13) is housed successively below the pressure cap (12), set joint (15), anchor tip (18) and locked joints (21); Overcoat (20) is housed setting between joint (15) and the lower contact (25), the deblocking assembly separate sealing joint (14) and lower center tube (22) is fixing through the 1st shear pin (16), on outer shaft (5) and lower center tube (22), be provided with inlet opening.
2. annular space fluid power compression packer according to claim 1; It is characterized in that: the upper end of said outer shaft (5) is arranged between top connection (1) lower end and the mandrel (4); In the top connection (1) and outer shaft (5) the interface outside helmet (3) is installed, helmet (3) is threaded with top connection (1) and surely nail (2) is fixing through the 1st.
3. annular space fluid power compression packer according to claim 1 is characterized in that: surely nail (8) is fixing through the 2nd with retaining cap (7) for said casing (9).
4. annular space fluid power compression packer according to claim 1; It is characterized in that: said anchor tip (18) and the lower center tube (22) that sets assembly fixed through the 2nd shear pin (19); Lower contact (25) and urceolus (20) are fixing through the 3rd shear pin (23), and surely nail (24) is fixing through the 3rd with lower center tube (22) in lower contact (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120533957 CN202348212U (en) | 2011-12-19 | 2011-12-19 | Annular hydraulic compression type packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120533957 CN202348212U (en) | 2011-12-19 | 2011-12-19 | Annular hydraulic compression type packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202348212U true CN202348212U (en) | 2012-07-25 |
Family
ID=46537221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120533957 Expired - Lifetime CN202348212U (en) | 2011-12-19 | 2011-12-19 | Annular hydraulic compression type packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202348212U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265233A (en) * | 2014-09-18 | 2015-01-07 | 天津五一机电设备有限公司 | Membrane expansion type 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 washable wells with large pressure difference for oil wells |
-
2011
- 2011-12-19 CN CN 201120533957 patent/CN202348212U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653144A (en) * | 2013-11-19 | 2015-05-27 | 中国石油天然气股份有限公司 | Compression packer for washable wells with large pressure difference for oil wells |
| CN104265233A (en) * | 2014-09-18 | 2015-01-07 | 天津五一机电设备有限公司 | Membrane expansion type packer |
| CN104265233B (en) * | 2014-09-18 | 2016-09-07 | 天津五一机电设备有限公司 | Barrier film inflatable packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201207 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: 300457 science and Technology Development Office of Bohai Drilling Engineering Co., Ltd., No. 106 Huang Hai Road, Tianjin Binhai New Area Development Zone Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120725 |
|
| CX01 | Expiry of patent term |