CN105626000B - Horizontal well washes down gravel filling sand prevention tubing string - Google Patents
Horizontal well washes down gravel filling sand prevention tubing string Download PDFInfo
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- CN105626000B CN105626000B CN201410591537.XA CN201410591537A CN105626000B CN 105626000 B CN105626000 B CN 105626000B CN 201410591537 A CN201410591537 A CN 201410591537A CN 105626000 B CN105626000 B CN 105626000B
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- tubing string
- sand
- filling
- punching
- sand control
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Abstract
The invention discloses horizontal wells to wash down gravel filling sand prevention tubing string, prevent outer tubing string including rushing, tubing string in sand washing, tubing string in squeeze pack sand control are housed inside the anti-outer tubing string of punching, tubing string is initially introduced into punching and prevents rising out in outer tubing string and after completing flushing work in the sand washing, and then tubing string is lowered into again inside the anti-outer tubing string of punching in the squeeze pack sand control.The present invention can make pit shaft rinse sand prevention integrated completion, shorten horizontal well " drift sand " stratum sand control construction period, cost-effective；Keep wellbore clean clean, it is ensured that sand control pipe smoothly reaches design position, and filling channel closes reliable, raising bottom squeeze filling construction success rate.
Description
Technical field
The present invention relates to oil exploitation underground work pipe column, especially horizontal wells to wash down gravel filling sand prevention tubing string.
Background technology
As loose sand oil accumulation exploitation enters the middle and later periods, formation skeleton sand extent of the destruction is increased, is shaked out in early days slight
Oil reservoir, degree of shaking out aggravation, forms " quicksand " stratum, the horizontal well on this kind of stratum can gush during underground work is carried out
Go out a large amount of reservoir sands, tubing string needs repeatedly tripping in, gets to design position, particularly constructs in gravel filling sand prevention
When, sand control pipe not only needs smoothly lower to design position, it is often more important that also to carry out effective gravel filling sand prevention, at present
" drift sand " stratum carries out SIMULATION STUDY OF GRAVEL PACKING IN HORIZONTAL WELL, accounts for that the well period is long, and gravel filling sand prevention construction success rate is low, and operating cost is high.
Invention content
The purpose of the present invention is to provide horizontal wells to wash down gravel filling sand prevention tubing string, and pit shaft rinses sand prevention integrated
It completes, shortens horizontal well " drift sand " stratum sand control construction period, it is cost-effective；Keep wellbore clean clean, it is ensured that sand control pipe
Design position is smoothly reached, filling channel is closed reliably, improves bottom squeeze filling construction success rate.
In order to achieve the above objectives, present invention employs following technical solution, horizontal well washes down gravel filling sand prevention
Tubing string prevents outer tubing string including punching, tubing string in sand washing, tubing string in squeeze pack sand control is housed inside the anti-outer tubing string of punching, described
Tubing string is initially introduced into punching and prevents rising out in outer tubing string and after completing flushing work in sand washing, then tubing string in the squeeze pack sand control
Punching is lowered into again to prevent inside outer tubing string.
The punching prevents that outer tubing string is included outside the packer, sand control screen, bottom filling that are connected in turn
Tool, blast tube.
The packer includes releasing gadget, suspension packing device, the releasing gadget, suspension packing device
The two is connected for back-buckling type.
What tubing string included being connected in turn in the sand washing sets back-off sub, connecting tube, sealing intubation, sets and gives up
It is connected and fixed by connection coupling between head, connecting tube, the back-off sub that sets is located inside packer, the company
It takes over inside sand control screen, the sealing intubation is located at the outer tool interior of bottom filling.
Sealing ring is installed on the inside of the outer front tool of the bottom filling, the outer wall of the sealing intubation passes through sealing on this
Circle is realized with the outer tool of bottom filling and is sealed.
Tubing string includes the inner tube being connected in turn, filling pipe, closes head, the filling in the squeeze pack sand control
Pipe opens up through-hole in itself circumferential wall.
Sealing ring is installed on the inside of the outer front tool of the bottom filling, the outer wall of the filling pipe passes through sealing ring on this
It realizes and seals with tool outside bottom filling.
The filling pipe, closing head are connected by screw, and the closing head outer wall opens up conical external screw thread, the blast tube
Inner wall opens up and the corresponding conical internal thread of above-mentioned conical external screw thread.
The closing head outer wall installs lower seal, is sealed in after head and blast tube threaded connection is closed and closes head and spray
Between sandpipe.
Compared to the prior art, the invention has the advantages that：
In tubing string tripping in pit shaft, by tubing string in sand washing with punching prevent outer tubular into reverse circulation washing channel it is unimpeded, under
Pit shaft gravel and residue are constantly rinsed while entering, keeps wellbore clean clean, it is ensured that it is smoothly lower to design to rush sand control pipe
Position, then pitching, which is suppressed, sets the sand control packer that outer tubing string is prevented in punching, and filling is anti-in sand-flushing pipe column of having given up out, then tripping in
Sandpipe column is pumped into mortar from oil pipe and carries out bottom squeeze filling anti-sand construction, after reacting cycle well-flushing, transfers and rotate forward tubing string, closes
Filling channel is closed, rises to fill tubing string, completes sand control construction.
Pit shaft rinses sand prevention integrated completion, shortens horizontal well " drift sand " stratum sand control construction period, cost-effective；It keeps
Wellbore clean is clean, it is ensured that sand control pipe smoothly reaches design position, and filling channel is closed reliably, improves bottom squeeze filling and applies
Work success rate.
Description of the drawings
Fig. 1 is horizontal well fill and -control integrated sand-flushing pipe column；
Fig. 2 fills tubing string for horizontal well fill and -control integrated bottom squeeze；
Fig. 3 stays well casing column for horizontal well fill and -control integrated.
In figure：Punching prevent outer tubing string 1, packer 2, releasing gadget 3, tubing string 4 in sand washing, hang packing device 5,
Set the outer tool 11 of back-off sub 6, connection coupling 7, sand control screen 8, connecting tube 9, upper sealing ring 10, bottom filling, sealing intubation
12nd, blast tube 13, tubing string 14 in squeeze pack sand control, inner tube 15, filling pipe 16, screw 17, lower seal 18, close head 19.
Specific embodiment
Detailed description for the present invention and technology contents, cooperation description of the drawings it is as follows, however attached drawing only provide reference with
Purposes of discussion is not intended to limit the present invention.
As shown in Figure 1, horizontal well washes down gravel filling sand prevention tubing string, horizontal well rushes sand prevention integrated tubing string, by rushing
Prevent outer tubing string 1, tubing string 14 forms in tubing string 4 and squeeze pack sand control in sand washing.
Punching prevents outer tubing string 1 by tool 11 outside the packer 2, sand control screen 8, bottom filling that are sequentially threadedly coupled
It is formed with blast tube 13, packer 2 is made of the releasing gadget 3 and suspension packing device 5 connected using left-hand thread, bottom
Portion fills outer 11 front inner wall of tool and installs sealing ring 10, and the conical surface is in 13 inner cavity of blast tube and is equipped with screw thread, is behind screw thread
Inner sealing surface；6 front end of back-off sub that sets of tubing string 4 is threadedly coupled with the releasing gadget 3 of packer 2 in sand washing, under
End is connected by connection coupling 7 with 9 screw thread of connecting tube, and 9 rear end of connecting tube is connected with sealing intubation 12, and sealing is intubated in 12 front end
Surface is equipped with step cutting pattern inwards, and sealing 12 appearances of intubation are installed on sealing ring 10 with outer 11 front end of tool of bottom filling
Inner surface cooperatively forms sealing；Tubing string 14 is threaded in the front end of filling pipe 16, inner tube by inner tube 15 in squeeze pack sand control
The inner surface of upper sealing ring 10 that 15 appearances are installed with outer 11 front end of tool of bottom filling cooperatively forms sealing, is set on filling pipe 16
There is uniformly distributed filling mouth, rear end is equipped with the hole of mounting screw 17, for connecting filling pipe 16 and closing head 19, closes on head 19 and pacifies
Equipped with lower seal 18, prevent that 13 sealing surface of blast tube of outer 1 bottom of tubing string coordinates with rushing, form sealing.
At the scene in use, being carried out by following operation sequence：
Horizontal well is rushed sand prevention integrated tubing string to be linked in sequence by Fig. 1, it is anti-outer by casing and punching during tripping in pit shaft
1 annular space of tubing string is pumped into water, rinses the gravel gushed out and is deposited on the residues such as pit shaft rear end particle, through 13 bottom of blast tube by rushing
Tubing string 4 returns out ground in sand, it is ensured that outer 1 smooth tripping in of tubing string is prevented in punching, rushes and prevents under outer tubing string 1 to after design position, from oil pipe throwing
Ball is reached at the interior step in the sealing intubation 12 of tubing string 4 in sand washing, is suppressed from oil pipe, and hydraulic pressure passes through the liquid for setting back-off sub 6
Discharge orifice is transmitted to packer 2, sets it and hangs on shaft in wall, and then rotating tubing string insulates suspension sub-releasing
The releasing gadget 3 of device 2 is disengaged with suspension packing device 5, and the releasing gadget 3 after disengagement is risen out together with tubing string in sand washing 4；Tripping in
Tubing string 14 in squeeze pack sand control when determining to close head 19 times to 13 inner sealing surface position of blast tube, above carries squeeze pack sand control
Interior tubing string 14 away from 13 inner conical surface of blast tube, takes sand flow body, through squeeze pack sand control from what oil pipe was pumped into squeeze pack
The filling mouth of interior tubing string 14, by blast tube 13 and close head 19 between space returned from 13 bottom of blast tube through production string with
Punching prevents that the annular space of outer tubing string 1 enters stratum, realizes bottom squeeze filling anti-sand；After construction, tubing string is pushed and is rotated and will close
It closes screw thread on first 19 and blast tube 13 to tighten, then upper lifting pipe post, pulls off in squeeze pack sand control filling pipe 16 on tubing string 14
The screw 17 that rear end is connect with closing head 19 proposes the filling pipe 16 and previous section of tubing string 14 in squeeze pack sand control, closes
First 19 and comprising the bottom blast tube 13 being threadedly coupled with it rushing prevent outer tubing string 1 stay well as sand control flow string.
The foregoing is merely presently preferred embodiments of the present invention, and non-to limit the scope of the claims of the present invention, other are with this
The equivalence changes of the patent spirit of invention should all belong to the scope of the claims of the present invention.
Claims (3)
1. horizontal well washes down gravel filling sand prevention tubing string, outer tubing string is prevented including rushing, which is characterized in that outer tubing string is prevented in the punching
Inside is equipped with tubing string in tubing string in sand washing, squeeze pack sand control, and tubing string is initially introduced into punching and prevents that outer tubing string is interior and complete in the sand washing
It is risen out after into flushing work, then tubing string is lowered into again inside the anti-outer tubing string of punching in the squeeze pack sand control；The punching is anti-outer
Tubing string includes the packer, sand control screen, bottom filling that are connected in turn outer tool, blast tube；It is described outstanding
It is that back-buckling type connects to hang back-off packer to include both releasing gadget, suspension packing device, the releasing gadget, suspension packing device
It connects；What tubing string included being connected in turn in the sand washing sets back-off sub, connecting tube, sealing intubation, sets back-off sub, connects
It is connected and fixed by connection coupling between taking over, the back-off sub that sets is located inside packer, the connecting tube
Inside sand control screen, the sealing intubation is located at the outer tool interior of bottom filling；Tubing string packet in the squeeze pack sand control
It includes the inner tube being connected in turn, filling pipe, close head, the filling pipe opens up through-hole in itself circumferential wall；The bottom
Sealing ring is installed on the inside of the outer front tool of filling, the outer wall of the filling pipe passes through tool outside sealing ring on this and bottom filling
Realize sealing；The filling pipe, closing head are connected by screw, and the closing head outer wall opens up conical external screw thread, the sandblasting
Inside pipe wall opens up and the corresponding conical internal thread of above-mentioned conical external screw thread.
2. horizontal well according to claim 1 washes down gravel filling sand prevention tubing string, which is characterized in that the bottom is filled
It fills out on the inside of outer front tool and installs sealing ring, the outer wall of the sealing intubation passes through tool outside sealing ring on this and bottom filling
Realize sealing.
3. horizontal well according to claim 1 washes down gravel filling sand prevention tubing string, which is characterized in that the closing head
Outer wall installs lower seal, is sealed in and is closed between head and blast tube after head and blast tube threaded connection is closed.
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 CN105626000A (en) | 2016-06-01 |
| CN105626000B true CN105626000B (en) | 2018-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625830B (en) * | 2017-03-22 | 2023-04-18 | 中国石油化工股份有限公司 | Ball throwing type layering sand prevention process pipe column and method thereof |
| 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 |
| 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 |
| CN112360402B (en) * | 2021-01-12 | 2021-04-27 | 东营市蕴东石油科技有限公司 | Multi-turn gravel packing tool |
| 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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|---|---|---|---|---|
| US4685519A (en) * | 1985-05-02 | 1987-08-11 | Mobil Oil Corporation | Hydraulic fracturing and gravel packing method employing special sand control technique |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6675891B2 (en) * | 2001-12-19 | 2004-01-13 | Halliburton Energy Services, Inc. | Apparatus and method for gravel packing a horizontal open hole production interval |
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2014
- 2014-10-29 CN CN201410591537.XA patent/CN105626000B/en active Active
Patent Citations (7)
| 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 |
| 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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| Publication number | Publication date |
|---|---|
| CN105626000A (en) | 2016-06-01 |
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