CN105626000A - Gravel pack sand prevention pipe column installed when wellhole is flushed, for horizontal well - Google Patents
Gravel pack sand prevention pipe column installed when wellhole is flushed, for horizontal well Download PDFInfo
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- CN105626000A CN105626000A CN201410591537.XA CN201410591537A CN105626000A CN 105626000 A CN105626000 A CN 105626000A CN 201410591537 A CN201410591537 A CN 201410591537A CN 105626000 A CN105626000 A CN 105626000A
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- tubing string
- sand
- filling
- horizontal well
- pipe column
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a gravel pack sand prevention pipe column installed when a wellhole is flushed, for a horizontal well. The gravel pack sand prevention pipe column comprises a flushing and preventing outer pipe column, wherein a sand flushing inner pipe column and a squeezing and packing sand prevention inner pipe column are arranged at the inner part of the flushing and preventing outer pipe column, the sand flushing inner pipe column is firstly loaded into the flushing and preventing outer pipe column, after the flushing work is completed, the sand flushing inner pipe column is pulled out, and then, the squeezing and packing sand prevention inner pipe column is put into the inner part of the flushing and preventing outer pipe column. According to the gravel pack sand prevention pipe column disclosed by the invention, the flushing and the sand prevention of the wellhole can be completed in an integrated manner, the sand prevention construction period of the horizontal well in a quicksand stratum is shortened, and the cost is saved; the wellhole is kept clean, the situation that the sand prevention pipe column successfully reaches a designed position is guaranteed, the closing of packing channels is reliable, and the success rate of the bottom squeezing and packing construction is increased.
Description
Technical field
The present invention relates to oil exploitation underground work pipe column, especially horizontal well washes down gravel filling sand prevention tubing string.
Background technology
Along with loose sand oil accumulation exploitation enters middle and late stage, formation skeleton sand destructiveness strengthens, shake out slight oil reservoir in early days, degree of shaking out is aggravated, form " quicksand " stratum, the horizontal well on this kind of stratum can be gushed out a large amount of reservoir sand in carrying out underground work process, tubing string needs repeatedly to enter down, get to design attitude, particularly when gravel filling sand prevention is constructed, sand control pipe not only needs lower to design attitude smoothly, the more important thing is and be also performed to effective gravel filling sand prevention, " drift sand " stratum carries out SIMULATION STUDY OF GRAVEL PACKING IN HORIZONTAL WELL at present, account for the well cycle long, it is low that gravel filling sand prevention is constructed into power, operating cost is high.
Summary of the invention
It is an object of the invention to provide horizontal well and wash down gravel filling sand prevention tubing string, pit shaft rinses sand prevention integrated completing, and shortens horizontal well " drift sand " stratum sand control construction period, saves cost; Keeping wellbore clean clean, it is ensured that sand control pipe arrives design attitude smoothly, filling pathway closure is reliable, improves bottom squeeze filling and is constructed into power.
In order to reach above-mentioned purpose, present invention employs following technical scheme, horizontal well washes down gravel filling sand prevention tubing string, including the anti-outer tubing string of punching, equipped with tubing string in tubing string, squeeze pack sand control in sand washing inside the anti-outer tubing string of described punching, in described sand washing, tubing string trips out after being initially introduced in the anti-outer tubing string of punching and completing flushing work, and then in described squeeze pack sand control, tubing string is lowered into inside the anti-outer tubing string of punching again.
Packer that the anti-outer tubing string of described punching includes being connected in turn, sand control screen, bottom filling instrument, blast tube outward.
Described packer includes releasing gadget, hangs packing device, and described releasing gadget, suspension both packing devices connect for back-buckling type.
Back-off sub that what in described sand washing, tubing string included being connected in turn set, connecting tube, sealing intubate, set to be connected by connection coupling between back-off sub, connecting tube and fix, the described back-off sub that sets is positioned at inside packer, described connecting tube is positioned at inside sand control screen, and described sealing intubates and is positioned at the outer tool interior of bottom filling.
Installing sealing ring inside the outer front tool of described bottom filling, the outer wall that described sealing intubates realizes sealing by the outer instrument of sealing ring on this and bottom filling.
Interior pipe that in described squeeze pack sand control, tubing string includes being connected in turn, filling pipe, closedown head, described filling pipe offers through hole in self circumferential wall.
Installing sealing ring inside the outer front tool of described bottom filling, the outer wall of described filling pipe realizes sealing by the outer instrument of sealing ring on this and bottom filling.
Described filling pipe, closedown head are connected by screw, and described closedown head outer wall offers conical external screw thread, and described blast tube inwall offers the conical internal thread corresponding with above-mentioned conical external screw thread.
Described closedown head outer wall installs lower seal, is sealed between closedown head and blast tube after closedown head and blast tube are threaded.
Compared to prior art, the method have the advantages that
When tubing string lower going-into-well cylinder, the reverse circulation washing channels open become by the anti-outer tubular of tubing string in sand washing and punching, under enter while constantly rinse pit shaft gravel and residue, keep wellbore clean clean, guarantee to rush sand control pipe lower to design attitude smoothly, then the sand control packer setting the anti-outer tubing string of punching is suppressed in pitching, and give up and trip out sand-flushing pipe column, enter down interior filling anti-sand tubing string again, pump into mortar from oil pipe and carry out bottom squeeze filling anti-sand construction, after reacting cycle well-flushing, transfer and rotate forward tubing string, close filling passage, trip out filling tubing string, complete sand control construction.
Pit shaft rinses sand prevention integrated completing, and shortens horizontal well " drift sand " stratum sand control construction period, saves cost; Keeping wellbore clean clean, it is ensured that sand control pipe arrives design attitude smoothly, filling pathway closure is reliable, improves bottom squeeze filling and is constructed into power.
Accompanying drawing explanation
Fig. 1 is horizontal well fill and-control integrated sand-flushing pipe column;
Fig. 2 is horizontal well fill and-control integrated bottom squeeze filling tubing string;
Fig. 3 is that horizontal well fill and-control integrated stays well casing post.
In figure: tubing string 4 in punching anti-outer tubing string 1, packer 2, releasing gadget 3, sand washing, hang packing device 5, set back-off sub 6, the outer instrument 11 of connection coupling 7, sand control screen 8, connecting tube 9, upper sealing ring 10, bottom filling, seal intubate 12, tubing string 14, interior pipe 15, filling pipe 16, screw 17, lower seal 18, closedown 19 in blast tube 13, squeeze pack sand control.
Detailed description of the invention
Detailed description for the present invention and technology contents, coordinate accompanying drawing to illustrate as follows, but accompanying drawing only provides reference and purposes of discussion, is not used for the present invention is any limitation as.
As it is shown in figure 1, horizontal well washes down gravel filling sand prevention tubing string, horizontal well rushes sand prevention integrated tubing string, by tubing string 4 in punching anti-outer tubing string 1, sand washing and in squeeze pack sand control tubing string 14 form.
The anti-outer tubing string 1 of punching is made up of sequentially threaded packer 2, sand control screen 8, the outer instrument 11 of bottom filling and blast tube 13, packer 2 is made up of the releasing gadget 3 adopting left-hand thread to connect and suspension packing device 5, outer instrument 11 front inner wall of bottom filling installs sealing ring 10, blast tube 13 inner chamber is the conical surface and is provided with screw thread, is inner sealing surface after screw thread; In sand washing, threaded with the releasing gadget 3 of packer 2 in back-off sub 6 front end that sets of tubing string 4, lower end is connected with connecting tube 9 screw thread by connection coupling 7, connecting tube 9 rear end is connected with sealing and intubates 12, seal and intubate the front inner surface of 12 and be provided with step cutting pattern inwards, seal and intubate the inner surface that 12 appearances and outer instrument 11 front end of bottom filling be installed on sealing ring 10 and cooperatively form sealing; In squeeze pack sand control, tubing string 14 is threaded in the front end of filling pipe 16 by interior pipe 15, the inner surface of the upper sealing ring 10 that interior pipe 15 appearance and outer instrument 11 front end of bottom filling are installed cooperatively forms sealing, filling pipe 16 is provided with uniform filling mouth, rear end is provided with the hole installing screw 17, for connecting filling pipe 16 and closedown 19, closedown 19 is installed on lower seal 18, coordinates with blast tube 13 sealing surface bottom the anti-outer tubing string 1 of punching, formed and seal.
When using at the scene, undertaken by following operation sequence:
Horizontal well rushes sand prevention integrated tubing string be linked in sequence by Fig. 1, lower going-into-well cylinder process is pumped into water by anti-outer tubing string 1 annular space of sleeve pipe and punching, rinse the gravel gushed out and be deposited on the residues such as pit shaft rear end granule, bottom blast tube 13 by sand washing in tubing string 4 return out ground, guarantee to enter under the anti-outer tubing string 1 of punching is smoothly, the anti-outer tubing string of punching 1 time is after design attitude, arrive the sealing of tubing string 4 in sand washing from oil pipe pitching and intubate the interior step on 12, suppress from oil pipe, hydraulic pressure is delivered to packer 2 through the liquid flow hole setting back-off sub 6, make it set and hang on shaft in wall, then rotating tubing string makes the releasing gadget 3 of packer 2 disengage with hanging packing device 5, releasing gadget 3 after disengaging is tripped out together with tubing string in sand washing 4, under enter tubing string 14 in squeeze pack sand control, determine when closedown arrives blast tube 13 inner sealing surface position 19 times, lift up tubing string 14 in squeeze pack sand control, away from blast tube 13 inner conical surface, sand flow body is taken from what oil pipe pumped into squeeze pack, the filling mouth of tubing string 14 in squeeze pack sand control, is returned the annular space entrance stratum through the anti-outer tubing string 1 of production string and punching by blast tube 13 and the space closed between 19, it is achieved bottom squeeze filling anti-sand from bottom blast tube 13, after construction terminates, tubing string is pressed down and is rotated and tightened by the screw thread on closedown 19 and blast tube 13, then tubing string is lifted up, pull off in squeeze pack sand control on tubing string 14 filling pipe 16 rear end and close 19 screw 17 being connected, proposing filling pipe 16 and the previous section of tubing string 14 in squeeze pack sand control, closedown 19 and the anti-outer tubing string 1 that rushes comprising the bottom blast tube 13 threadeded with it stays well as sand control flow string.
The foregoing is only presently preferred embodiments of the present invention, be not used to limit the scope of the claims of the present invention, other use the equivalent of patent spirit of the present invention to change, and all should all belong to the scope of the claims of the present invention.
Claims (9)
1. horizontal well washes down gravel filling sand prevention tubing string, including the anti-outer tubing string of punching, it is characterized in that, equipped with tubing string in tubing string, squeeze pack sand control in sand washing inside the anti-outer tubing string of described punching, in described sand washing, tubing string trips out after being initially introduced in the anti-outer tubing string of punching and completing flushing work, and then in described squeeze pack sand control, tubing string is lowered into inside the anti-outer tubing string of punching again.
2. horizontal well according to claim 1 washes down gravel filling sand prevention tubing string, it is characterised in that packer that the anti-outer tubing string of described punching includes being connected in turn, sand control screen, bottom filling instrument, blast tube outward.
3. horizontal well according to claim 2 washes down gravel filling sand prevention tubing string, it is characterised in that described packer includes releasing gadget, hangs packing device, and described releasing gadget, suspension both packing devices connect for back-buckling type.
4. horizontal well according to claim 2 washes down gravel filling sand prevention tubing string, it is characterized in that, back-off sub that what in described sand washing, tubing string included being connected in turn set, connecting tube, sealing intubate, set to be connected by connection coupling between back-off sub, connecting tube and fix, the described back-off sub that sets is positioned at inside packer, described connecting tube is positioned at inside sand control screen, and described sealing intubates and is positioned at the outer tool interior of bottom filling.
5. horizontal well according to claim 4 washes down gravel filling sand prevention tubing string, it is characterized in that, installing sealing ring inside the outer front tool of described bottom filling, the outer wall that described sealing intubates realizes sealing by the outer instrument of sealing ring on this and bottom filling.
6. horizontal well according to claim 2 washes down gravel filling sand prevention tubing string, it is characterised in that interior pipe that in described squeeze pack sand control, tubing string includes being connected in turn, filling pipe, closedown head, described filling pipe offers through hole in self circumferential wall.
7. horizontal well according to claim 6 washes down gravel filling sand prevention tubing string, it is characterised in that install sealing ring inside the outer front tool of described bottom filling, and the outer wall of described filling pipe realizes sealing by the outer instrument of sealing ring on this and bottom filling.
8. horizontal well according to claim 6 washes down gravel filling sand prevention tubing string, it is characterized in that, described filling pipe, closedown head are connected by screw, and described closedown head outer wall offers conical external screw thread, and described blast tube inwall offers the conical internal thread corresponding with above-mentioned conical external screw thread.
9. horizontal well according to claim 8 washes down gravel filling sand prevention tubing string, it is characterised in that described closedown head outer wall installs lower seal, is sealed between closedown head and blast tube after closedown head and blast tube are threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410591537.XA CN105626000B (en) | 2014-10-29 | 2014-10-29 | Horizontal well washes down gravel filling sand prevention tubing string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410591537.XA CN105626000B (en) | 2014-10-29 | 2014-10-29 | Horizontal well washes down gravel filling sand prevention tubing string |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105626000A true CN105626000A (en) | 2016-06-01 |
| CN105626000B CN105626000B (en) | 2018-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410591537.XA Active CN105626000B (en) | 2014-10-29 | 2014-10-29 | Horizontal well washes down gravel filling sand prevention tubing string |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625830A (en) * | 2017-03-22 | 2018-10-09 | 中国石油化工股份有限公司 | Ball-throwing type selective sand control process pipe string and its method |
| CN110685622A (en) * | 2018-07-06 | 2020-01-14 | 中国石油化工股份有限公司 | Uniform jet flow blockage removal and filling integrated process pipe column and method |
| CN111927404A (en) * | 2020-10-15 | 2020-11-13 | 东营市蕴东石油科技有限公司 | Gravel packing tool capable of being used while being flushed |
| CN112360402A (en) * | 2021-01-12 | 2021-02-12 | 东营市蕴东石油科技有限公司 | Multi-turn gravel packing tool |
| CN112814629A (en) * | 2019-11-18 | 2021-05-18 | 东营市蕴东石油科技有限公司 | One-time washing and two-way filling sand prevention pipe column |
| CN114075953A (en) * | 2022-01-06 | 2022-02-22 | 东营市兆鑫工贸有限责任公司 | Conversion type forward filling tool with sealing structure |
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| US4685519A (en) * | 1985-05-02 | 1987-08-11 | Mobil Oil Corporation | Hydraulic fracturing and gravel packing method employing special sand control technique |
| US20030111224A1 (en) * | 2001-12-19 | 2003-06-19 | Hailey Travis T. | Apparatus and method for gravel packing a horizontal open hole production interval |
| CN2688888Y (en) * | 2004-03-23 | 2005-03-30 | 中国石化胜利油田有限公司采油工艺研究院 | Squeezing filled sand preventing column without casing pressure |
| CN1603574A (en) * | 2004-11-03 | 2005-04-06 | 中国石化胜利油田有限公司采油工艺研究院 | Layered pipe column for squeeze packing sand control process |
| CN102134982A (en) * | 2011-02-11 | 2011-07-27 | 孔利生 | Multilayer gravel packing method and tool |
| CN102330545A (en) * | 2011-10-17 | 2012-01-25 | 中国石油天然气股份有限公司 | Oil well sand prevention method for heavy oil reservoir |
| CN202882862U (en) * | 2012-10-24 | 2013-04-17 | 中国石油化工股份有限公司 | Underground sand prevention tubular column capable of enabling well backwashing and sand washing and high-pressure gravel packing to be achieved |
| CN103291255A (en) * | 2013-03-29 | 2013-09-11 | 中国石油天然气股份有限公司 | Packing device for cased hole gravel packing of horizontal well |
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2014
- 2014-10-29 CN CN201410591537.XA patent/CN105626000B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4685519A (en) * | 1985-05-02 | 1987-08-11 | Mobil Oil Corporation | Hydraulic fracturing and gravel packing method employing special sand control technique |
| US20030111224A1 (en) * | 2001-12-19 | 2003-06-19 | Hailey Travis T. | Apparatus and method for gravel packing a horizontal open hole production interval |
| CN2688888Y (en) * | 2004-03-23 | 2005-03-30 | 中国石化胜利油田有限公司采油工艺研究院 | Squeezing filled sand preventing column without casing pressure |
| CN1603574A (en) * | 2004-11-03 | 2005-04-06 | 中国石化胜利油田有限公司采油工艺研究院 | Layered pipe column for squeeze packing sand control process |
| CN102134982A (en) * | 2011-02-11 | 2011-07-27 | 孔利生 | Multilayer gravel packing method and tool |
| CN102330545A (en) * | 2011-10-17 | 2012-01-25 | 中国石油天然气股份有限公司 | Oil well sand prevention method for heavy oil reservoir |
| CN202882862U (en) * | 2012-10-24 | 2013-04-17 | 中国石油化工股份有限公司 | Underground sand prevention tubular column capable of enabling well backwashing and sand washing and high-pressure gravel packing to be achieved |
| CN103291255A (en) * | 2013-03-29 | 2013-09-11 | 中国石油天然气股份有限公司 | Packing device for cased hole gravel packing of horizontal well |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625830A (en) * | 2017-03-22 | 2018-10-09 | 中国石油化工股份有限公司 | Ball-throwing type selective sand control process pipe string and its method |
| CN110685622A (en) * | 2018-07-06 | 2020-01-14 | 中国石油化工股份有限公司 | Uniform jet flow blockage removal and filling integrated process pipe column and method |
| CN112814629A (en) * | 2019-11-18 | 2021-05-18 | 东营市蕴东石油科技有限公司 | One-time washing and two-way filling sand prevention pipe column |
| CN111927404A (en) * | 2020-10-15 | 2020-11-13 | 东营市蕴东石油科技有限公司 | Gravel packing tool capable of being used while being flushed |
| CN111927404B (en) * | 2020-10-15 | 2020-12-18 | 东营市蕴东石油科技有限公司 | Gravel packing tool capable of being used while being flushed |
| CN112360402A (en) * | 2021-01-12 | 2021-02-12 | 东营市蕴东石油科技有限公司 | Multi-turn gravel packing tool |
| CN114075953A (en) * | 2022-01-06 | 2022-02-22 | 东营市兆鑫工贸有限责任公司 | Conversion type forward filling tool with sealing structure |
| CN114075953B (en) * | 2022-01-06 | 2022-03-25 | 东营市兆鑫工贸有限责任公司 | Conversion type forward filling tool with sealing structure |
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| CN105626000B (en) | 2018-06-15 |
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