CN103184848A - Hydraulic seat seal permanent open hole packer and open hole well-completion packing method - Google Patents
Hydraulic seat seal permanent open hole packer and open hole well-completion packing method Download PDFInfo
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- CN103184848A CN103184848A CN2011104500224A CN201110450022A CN103184848A CN 103184848 A CN103184848 A CN 103184848A CN 2011104500224 A CN2011104500224 A CN 2011104500224A CN 201110450022 A CN201110450022 A CN 201110450022A CN 103184848 A CN103184848 A CN 103184848A
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Abstract
The invention discloses a hydraulic seat seal permanent open hole packer and an open hole well-completion packing method, wherein the packer comprises a central spindle with an axial through hole, the central spindle is connected with a first joint at one end, is connected with a second joint at the other end, is sheathed with a left push slip, a first metal expansion bowl, a first assisting rubber barrel press ring, a first assisting rubber barrel, a first retainer, a main rubber barrel, a second retainer, a second assisting rubber barrel press ring, a second assisting rubber barrel, a second metal expansion bawl, a shearing ring, a piston and a stopping ring in sequence from the first joint, and is provided with a first pressure conduction hole and a first slip corresponding to the first left push slip, a support ring is arranged between the main rubber barrel and the central spindle, an outer barrel is sheathed outside the piston, is connected with the second joint at one end and is connected with the shearing ring at the other end, and the central spindle is provided with a second slip corresponding to the piston and a second pressure conduction hole positioned between the stopping ring and the piston. The hydraulic seat seal permanent open hole packer disclosed by the invention is fast and durable.
Description
Technical field
The present invention relates to oil field straight well or horizontal well barefoot completion segmentation renovation technique field, specifically a kind of hydraulic base sealed permanent type open hole packer and barefoot completion packing method.
Background technology
In oilfield process, the segmentation renovation technique of straight well or horizontal well is efficiently to develop low permeability reservoirs, ultralowly oozes, effective well stimulation of unconventional oil-gas reservoirs such as special hypotonic, shale gas reservoir.Owing to straight well multilayer system or horizontal well individual layer system but reason such as horizontal segment length, non-homogeneity be strong, it is not strong to carry out disposable general acidifying or pressure break specific aim, often can not reach the purpose of transformation.And adopt open hole packer to carry out segmentation completion and transformation, can take modification measures targetedly to each payzone, or increase with acid strength or increase sand fracturing scale, thereby realize that really each payzone Duan Jun reaches efficient solution and stops up, links up the purpose of reservoir except nearly well.Open hole packer is one of instrument in the barefoot completion segmentation reforming technology, has played the key operation of packing bore hole reservoir section, has obtained extensive application.In straight well or horizontal well barefoot completion segmentation volume increase transformation process, transform requirement according to geology, need be lowered to segmentation completion tubular column string bore hole reservoir section is divided into some sections, relevant position at the completion tubular column string is lowered to open hole packer, correspondence position in the needs transformation is lowered to sliding sleeve (fluid enters reservoir by sliding sleeve) simultaneously, when the completion tubular column string behind design attitude, packer carries out packing, can realize staged fracturing or acid stimulation operation.
In straight well or horizontal well barefoot completion segmentation volume increase transformation process, transform requirement according to geology, need be lowered to segmentation completion tubular column string bore hole reservoir section is divided into some sections, relevant position at the completion tubular column string is lowered to open hole packer, correspondence position in the needs transformation is lowered to sliding sleeve (fluid enters reservoir by sliding sleeve) simultaneously, when the completion tubular column string behind design attitude, the base sealed packer that builds the pressure, pitching is opened sliding sleeve and can be realized staged fracturing or acid stimulation operation successively.But existing packer all has deficiency.Wherein, inflatable packer: its sealing is restricted because of relevant with the packing element inside and outside differential pressure, and general pressure-bearing difference ability is lower.Meet the liquid swell packers: the first, because automatic slowly behind its packing element chance liquid expands, stop operation be lowered to process if having etc., produce and meet the risk that liquid expands midway; The second, how many sealing and downhole fluid type, fluids have relation, and instrument is gone into when needing to give behind the well chien shih, and it fully expands, so long construction period.
In view of above-mentioned existing packer all has weak point, the inventor is actively studied and is innovated, to found a kind of new type hydraulic seat envelope permanent type open hole packer and barefoot completion packing method, make it have more practicality in barefoot completion segmentation renovation technique field.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the invention provides a kind of hydraulic base sealed permanent type open hole packer, packer of the present invention has the advantages that sealing is quick, sealing is of long duration.
In order to solve the problems of the technologies described above, the present invention has adopted following technical scheme:
Hydraulic base sealed permanent type open hole packer, comprise the mandrel with axially extending bore, one end of mandrel connects first joint, the other end connects second joint, pushes away slips, the first expansion of metal bowl, the first auxilliary packing element pressure ring, the first auxiliary packing element, first spacer ring, main packing element, second spacer ring, the second auxilliary packing element pressure ring, the second auxiliary packing element, the second expansion of metal bowl, shearing ring, piston and locating snap ring from first joint to the second joint socket left side successively on the mandrel; Wherein a left side pushes away an end of slips between first joint and mandrel, and be slidingly connected with first joint and stem seal, a left side pushes away slips and is connected by first shear pin with first joint, a left side pushes away the common first pressure transmission chamber that forms of slips and first joint and mandrel, has first pressure transmission hole that is communicated with the first pressure transmission chamber and mandrel inside on the mandrel; The inner surface that a left side pushes away slips has the dentation slip insert, and mandrel is provided with and stops a left side to push away first slips with slips tooth that slips moves to the first joint direction; Be provided with support ring between main packing element and the mandrel, support ring is positioned at the middle part of main packing element; The outside at piston is with urceolus, one end of urceolus is connected with second joint sealing, the other end of urceolus is connected by second shear pin with shearing ring, slipper seal is connected between piston and mandrel and the urceolus, have the dentation slip insert on the inwall of piston, mandrel is provided with second slips with slips tooth that stops piston to move to the second joint direction; Also have second pressure transmission hole on the described mandrel, described second pressure transmission hole between locating snap ring and piston, described locating snap ring and urceolus and mandrel axial restraint.
Further, a described left side pushes away between slips and first joint, and a left side pushes away and is respectively arranged with first O-ring seals between slips and the mandrel and seals.
Further, being provided with second O-ring seals between described piston and urceolus and the mandrel seals.
Further, by being set, the 3rd O-ring seals seals between described urceolus and second joint.
Further, between described mandrel and first joint and second joint for being threaded.
Another object of the present invention is for providing a kind of barefoot completion packing method of using above-mentioned packer, and the inventive method packing is quick, and packing is of long duration.
The technical scheme that realizes above-mentioned purpose is as follows:
Use the barefoot completion packing method of above-mentioned packer, comprise the steps:
A. above-mentioned packer is inserted completion tubular column, second joint of wherein said packer is by the pit shaft barrier valve of oil pipe connecting band ball seat, and first joint is connected with oil pipe or drilling rod;
B. described packer is delivered to the downhole designs position, drop into the seat blocking to the ball seat of pit shaft barrier valve by drilling rod or oil pipe;
C. suppress from oil pipe or drilling rod, pressure is delivered to a left side respectively by first pressure transmission hole on the mandrel and second pressure transmission hole and pushes away on slips and the piston, after pressure reaches shear force, first shear pin and second shear pin are cut off respectively, a left side pushes away slips and piston moves to the middle part of mandrel respectively under effect vertically at pressure, final pressure is passed to the both sides of main packing element, makes main packing element be subjected to compression swelling, finally forms seal pack;
D. simultaneously, a left side pushes away slips and the mutual interlock of first slips, stops a left side to push away slips and moves to the first joint direction, and piston and second slips are engaged, stops piston to move to the second joint direction, thereby stops main packing element resilience, forms lasting packing.
Compared with prior art, beneficial effect of the present invention is:
Hydraulic base sealed permanent type open hole packer of the present invention transmits hydraulic pressure by first pressure transmission hole and second pressure transmission hole, and then promote to be enclosed within a left side on the mandrel and push away slips and piston and cut off shear pin separately and move the packing element Expansion sealing bore hole reservoir section in the middle part of the mechanical presses power of generation finally makes and is positioned to the middle part.Simultaneously, the dentalation that has slip insert of design makes not deblocking of a main packing element of being honored as a queen, bearing capacity height; Seat envelope process is finished the save operation time in moment.Structure design is ingenious, reliable, can guarantee each payzone section security implementation operation to horizontal well or the effective packing of straight well bore hole reservoir section through overtesting.
Description of drawings
Fig. 1 partly cuts open figure for the structure of the hydraulic base sealed permanent type open hole packer of invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail, but not as a limitation of the invention.
Embodiment 1:
Fig. 1 partly cuts open figure for the structure of the hydraulic base sealed permanent type open hole packer of invention.As shown in Figure 1, hydraulic base sealed permanent type open hole packer, comprise the mandrel 17 with axially extending bore, one end of mandrel 17 connects first joint 1, the other end connects second joint 18, pushes away slips 3, the first expansion of metal bowl 5, the first auxilliary packing element pressure ring 19, the first auxiliary packing element 6, first spacer ring 7, main packing element 9, second spacer ring 20, the second auxiliary packing element 21, the second auxilliary packing element pressure ring 10, the second expansion of metal bowl 11, shearing ring 12, piston 14 and locating snap ring 15 from first joint, 1 to second joint 18 a socket left side successively on the mandrel 17; Wherein a left side pushes away an end of slips 3 between first joint 1 and mandrel 17, and be dynamically connected with first joint 1 and mandrel 17 sealed sliding, a left side pushes away slips 3 and is connected by first shear pin 2 with first joint 1, a left side pushes away slips 3 and first joint 1 and the mandrel common first pressure transmission chambers 22 that form 17, has first pressure transmission hole 23 that is communicated with the first pressure transmission chamber 22 and mandrel 17 inside on the mandrel 17; The inner surface that a left side pushes away slips 3 has dentation slip insert 24, and mandrel 17 is provided with and stops a left side to push away first slips 4 with slips tooth that slips 3 moves to first joint, 1 direction; Be provided with support ring 8 between main packing element 9 and the mandrel 17, support ring 8 is positioned at the middle part of main packing element 9; Be with urceolus 16 in the outside of piston 14, one end of urceolus 16 and second joint 18 are tightly connected, the other end of urceolus 16 is connected by second shear pin 13 with shearing ring 12, slipper seal is connected between piston 14 and mandrel 17 and the urceolus 16, have dentation slip insert 25 on the inwall of piston 14, mandrel 17 is provided with second slips 26 with slips tooth that stops piston 14 to move to second joint, 18 directions; Also have second pressure transmission hole, 27, the second pressure transmission hole positions 27 on the mandrel 17 between locating snap ring 15 and piston 14, locating snap ring 15 and urceolus 16 and mandrel 17 axial restraints.A left side pushes away between slips 3 and first joint 1, and a left side pushes away and is respectively arranged with first O-ring seals 28 between slips 3 and the mandrel 17 and seals.Being respectively equipped with second O-ring seals 29 between piston 14 and urceolus 16 and the mandrel 17 seals.By being set, the 3rd O-ring seals 30 seals between urceolus 16 and second joint 18.Between mandrel 17 and first joint 1 and second joint 18 for being threaded.1 female joint of first joint, second joint 18 is male joint.
Embodiment 2:
Present embodiment is the barefoot completion packing method of the above-mentioned packer of use of the present invention, relates to packer and partly please refer to Fig. 1 and foregoing description.Present embodiment is specific as follows: use the barefoot completion packing method of above-mentioned packer, comprise the steps:
A. above-mentioned packer is inserted completion tubular column, second joint of wherein said packer is by the pit shaft barrier valve of oil pipe connecting band ball seat, and first joint is connected with oil pipe or drilling rod;
B. described packer is delivered to the downhole designs position, drop into the seat blocking to the ball seat of pit shaft barrier valve by drilling rod or oil pipe;
C. suppress from oil pipe or drilling rod, pressure is delivered to a left side respectively by first pressure transmission hole 23 on the mandrel 17 and second pressure transmission hole 27 and pushes away on slips 3 and the piston 14, after pressure reaches shear force, first shear pin 2 and second shear pin 13 are cut off respectively, a left side pushes away slips 3 and piston 14 moves to the middle part of mandrel 17 respectively under effect vertically at pressure, final pressure is passed to the both sides of main packing element 9, makes main packing element 9 be subjected to compression swelling, finally forms seal pack;
D. simultaneously, a left side pushes away slips 3 and the 4 mutual interlocks of first slips, stops a left side to push away slips 3 and moves to first joint, 1 direction, piston 14 and second slips 26 are engaged, stop piston 14 to move to second joint, 18 directions, thereby stop main packing element 9 resiliences, form lasting packing.
Above embodiment is exemplary embodiment of the present invention only, is not used in restriction the present invention, and protection scope of the present invention is defined by the claims.Those skilled in the art can make various modifications or be equal to replacement the present invention in essence of the present invention and protection domain, this modification or be equal to replacement and also should be considered as dropping in protection scope of the present invention.
Claims (7)
1. hydraulic base sealed permanent type open hole packer, it is characterized in that, comprise the mandrel with axially extending bore, one end of mandrel connects first joint, the other end connects second joint, pushes away slips, the first expansion of metal bowl, the first auxilliary packing element pressure ring, the first auxiliary packing element, first spacer ring, main packing element, second spacer ring, the second auxilliary packing element pressure ring, the second auxiliary packing element, the second expansion of metal bowl, shearing ring, piston and locating snap ring from first joint to the second joint socket left side successively on the mandrel; Wherein a left side pushes away an end of slips between first joint and mandrel, and be slidingly connected with first joint and stem seal, a left side pushes away slips and is connected by first shear pin with first joint, a left side pushes away the common first pressure transmission chamber that forms of slips and first joint and mandrel, has first pressure transmission hole that is communicated with the first pressure transmission chamber and mandrel inside on the mandrel; The inner surface that a left side pushes away slips has the dentation slip insert, and mandrel is provided with and stops a left side to push away first slips with slips tooth that slips moves to the first joint direction; Be provided with support ring between main packing element and the mandrel, support ring is positioned at the middle part of main packing element; The outside at piston is with urceolus, one end of urceolus is connected with second joint sealing, the other end of urceolus is connected by second shear pin with shearing ring, slipper seal is connected between piston and mandrel and the urceolus, have the dentation slip insert on the inwall of piston, mandrel is provided with second slips with slips tooth that stops piston to move to the second joint direction; Also have second pressure transmission hole on the described mandrel, described second pressure transmission hole between locating snap ring and piston, described locating snap ring and urceolus and mandrel axial restraint.
2. hydraulic base sealed permanent type open hole packer according to claim 1 is characterized in that, a described left side pushes away between slips and first joint, and a left side pushes away and is respectively arranged with first O-ring seals between slips and the mandrel and seals.
3. hydraulic base sealed permanent type open hole packer according to claim 1 is characterized in that, is provided with second O-ring seals between described piston and urceolus and the mandrel and seals.
4. hydraulic base sealed permanent type open hole packer according to claim 1 is characterized in that, seals by the 3rd O-ring seals is set between described urceolus and second joint.
5. hydraulic base sealed permanent type open hole packer according to claim 1 is characterized in that, between described mandrel and first joint and second joint for being threaded.
6. hydraulic base sealed permanent type open hole packer according to claim 1 is characterized in that, described first joint is female joint, and described second joint is male joint.
7. right to use requires the barefoot completion packing method of 1 to 6 described packer, it is characterized in that, comprises the steps:
A. above-mentioned packer is inserted completion tubular column, second joint of wherein said packer is by the pit shaft barrier valve of oil pipe connecting band ball seat, and first joint is connected with oil pipe or drilling rod;
B. described packer is delivered to the downhole designs position, drop into the seat blocking to the ball seat of pit shaft barrier valve by drilling rod or oil pipe;
C. suppress from oil pipe or drilling rod, pressure is delivered to a left side respectively by first pressure transmission hole on the mandrel and second pressure transmission hole and pushes away on slips and the piston, after pressure reaches shear force, first shear pin and second shear pin are cut off respectively, a left side pushes away slips and piston moves to the middle part of mandrel respectively under effect vertically at pressure, final pressure is passed to the both sides of main packing element, makes main packing element be subjected to compression swelling, finally forms seal pack;
D. simultaneously, a left side pushes away slips and the mutual interlock of first slips, stops a left side to push away slips and moves to the first joint direction, and piston and second slips are engaged, stops piston to move to the second joint direction, thereby stops main packing element resilience, forms lasting packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110450022.4A CN103184848B (en) | 2011-12-29 | 2011-12-29 | Hydraulic base sealed permanent type open hole packer and barefoot completion packing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110450022.4A CN103184848B (en) | 2011-12-29 | 2011-12-29 | Hydraulic base sealed permanent type open hole packer and barefoot completion packing method |
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| CN103184848A true CN103184848A (en) | 2013-07-03 |
| CN103184848B CN103184848B (en) | 2015-09-30 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670331A (en) * | 2013-12-31 | 2014-03-26 | 安东石油技术（集团）有限公司 | Shaft isolation valve |
| CN104120998A (en) * | 2014-07-04 | 2014-10-29 | 中国石油天然气股份有限公司 | Suspension packer for gas well layered exploitation |
| CN106522881A (en) * | 2016-12-07 | 2017-03-22 | 中国石油集团西部钻探工程有限公司 | Downhole isolating valve |
| CN109798086A (en) * | 2019-03-01 | 2019-05-24 | 中石化石油工程技术服务有限公司 | High temperature and pressure oil/gas well Open-Hole Section insulates completion system |
| CN110410033A (en) * | 2019-08-28 | 2019-11-05 | 库尔勒中油能源技术服务有限公司 | Dilute packer is mixed in a kind of HOR-GB gas injection |
| CN110836104A (en) * | 2019-11-28 | 2020-02-25 | 中国石油集团川庆钻探工程有限公司 | Bidirectional slip hydraulic permanent packer |
| CN110905439A (en) * | 2019-11-28 | 2020-03-24 | 中国石油集团川庆钻探工程有限公司 | Integrated downhole operation tool based on bidirectional slip hydraulic permanent packer |
| CN111350473A (en) * | 2020-03-17 | 2020-06-30 | 济南市坤鹏技术开发中心 | Packer |
| CN113123753A (en) * | 2019-12-31 | 2021-07-16 | 中国石油化工股份有限公司 | Soluble easy-to-drill open hole packer and using method thereof |
| CN113338839A (en) * | 2021-06-15 | 2021-09-03 | 中石化石油工程技术服务有限公司 | Self-locking type oil and gas well open hole section packing well completion device |
| CN113445958A (en) * | 2021-05-26 | 2021-09-28 | 中国海洋石油集团有限公司 | Compression packer |
| CN114837599A (en) * | 2022-05-12 | 2022-08-02 | 百勤能源科技（惠州）有限公司 | High-temperature high-pressure recoverable packer |
| CN115247545A (en) * | 2021-04-27 | 2022-10-28 | 中国石油化工股份有限公司 | Pressure transmission tool and method for drilling-plug-free cementing completion |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670331B (en) * | 2013-12-31 | 2016-06-08 | 安东石油技术（集团）有限公司 | A kind of shaft isolation valve |
| CN103670331A (en) * | 2013-12-31 | 2014-03-26 | 安东石油技术（集团）有限公司 | Shaft isolation valve |
| CN104120998A (en) * | 2014-07-04 | 2014-10-29 | 中国石油天然气股份有限公司 | Suspension packer for gas well layered exploitation |
| CN106522881A (en) * | 2016-12-07 | 2017-03-22 | 中国石油集团西部钻探工程有限公司 | Downhole isolating valve |
| CN109798086A (en) * | 2019-03-01 | 2019-05-24 | 中石化石油工程技术服务有限公司 | High temperature and pressure oil/gas well Open-Hole Section insulates completion system |
| CN110410033A (en) * | 2019-08-28 | 2019-11-05 | 库尔勒中油能源技术服务有限公司 | Dilute packer is mixed in a kind of HOR-GB gas injection |
| CN110410033B (en) * | 2019-08-28 | 2024-03-22 | 库尔勒中油能源技术服务有限公司 | HOR-GB gas injection and dilution packer |
| CN110905439B (en) * | 2019-11-28 | 2022-03-01 | 中国石油集团川庆钻探工程有限公司 | Integrated downhole operation tool based on bidirectional slip hydraulic permanent packer |
| CN110836104A (en) * | 2019-11-28 | 2020-02-25 | 中国石油集团川庆钻探工程有限公司 | Bidirectional slip hydraulic permanent packer |
| CN110905439A (en) * | 2019-11-28 | 2020-03-24 | 中国石油集团川庆钻探工程有限公司 | Integrated downhole operation tool based on bidirectional slip hydraulic permanent packer |
| CN110836104B (en) * | 2019-11-28 | 2021-09-24 | 中国石油集团川庆钻探工程有限公司 | Bidirectional slip hydraulic permanent packer |
| CN113123753A (en) * | 2019-12-31 | 2021-07-16 | 中国石油化工股份有限公司 | Soluble easy-to-drill open hole packer and using method thereof |
| CN111350473A (en) * | 2020-03-17 | 2020-06-30 | 济南市坤鹏技术开发中心 | Packer |
| CN115247545A (en) * | 2021-04-27 | 2022-10-28 | 中国石油化工股份有限公司 | Pressure transmission tool and method for drilling-plug-free cementing completion |
| CN113445958A (en) * | 2021-05-26 | 2021-09-28 | 中国海洋石油集团有限公司 | Compression packer |
| CN113338839A (en) * | 2021-06-15 | 2021-09-03 | 中石化石油工程技术服务有限公司 | Self-locking type oil and gas well open hole section packing well completion device |
| CN114837599A (en) * | 2022-05-12 | 2022-08-02 | 百勤能源科技（惠州）有限公司 | High-temperature high-pressure recoverable packer |
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