CN1112502C - One-step filling technology for isolating high pressure and its tool - Google Patents
One-step filling technology for isolating high pressure and its tool Download PDFInfo
- Publication number
- CN1112502C CN1112502C CN00123632A CN00123632A CN1112502C CN 1112502 C CN1112502 C CN 1112502C CN 00123632 A CN00123632 A CN 00123632A CN 00123632 A CN00123632 A CN 00123632A CN 1112502 C CN1112502 C CN 1112502C
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- Prior art keywords
- filling
- clean
- packing
- out service
- disposable
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- Expired - Lifetime
Links
- 238000005516 engineering process Methods 0.000 title description 2
- 238000012856 packing Methods 0.000 claims abstract description 59
- 239000004576 sand Substances 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000005406 washing Methods 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 239000003129 oil well Substances 0.000 claims description 46
- 238000011010 flushing procedure Methods 0.000 claims description 13
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 abstract description 3
- 238000011001 backwashing Methods 0.000 abstract 2
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 210000002445 nipple Anatomy 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000005316 response function Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
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Abstract
The present invention relates to one-step filling operation for packing high pressure in the process of the restoration of an oil gas well and tools suitable for the operation. The problems of long well occupation time and poor sand prevention effect of the prior art in the kindred operation are solved. The one-step packing filling tools comprise a central tube (4), a packing device (1) and a back washing channel (14) penetrating through the packing device (1), wherein a filling channel (15) is arranged on a position approaching to the lower end of the central tube (4), and opening and closing devices are arranged on the back washing channel (14) and the filling channel (15). Liquid with sand and well washing liquid are orderly filled in an oil tube and an annulus for making the opening and closing devices act according to design requirements so as to realize filling operation and well washing operation.
Description
Technical field
The present invention relates to the disposable instrument of finishing the method for oil well packing, filling and clean-out service and being applicable to this method in the oil gas well repair process.
Background technology
Along with the continuous expansion of loose sand oil accumulation exploitation scale, need repair the borehole wall of the oil well of this class geological conditions.And improve the sand control success rate, extend the expiration date, reduce the highest goal that operating cost has become sand control technique.In the prior art, down-cup tool is mainly adopted in oil well sand prevention operation, this instrument in use, need be when packing job and packing operation each next time well workover tubing string, thereby labour intensity is big, the activity duration is long.In addition, leather cup very easily scrapes borehole wall dirt to the sand filter position and results in blockage in the process of going into the well.Again on the one hand, the stowing pressure of this down-cup tool is low, can only the pack portion pit shaft, sand can not be filled to the near wellbore zone, and the sand prevention period of validity is short.
Summary of the invention
The objective of the invention is to overcome the defective of above-mentioned prior art, only realize that the well workover post just can be finished packing, filling and clean-out service next time, reduce accounting for the well time: improve the sand control quality simultaneously, prolong the sand control life.
For achieving the above object, the present invention proposes a kind of disposable instrument and a kind of disposable method of finishing oil well packing, filling and clean-out service of finishing oil well packing, filling and clean-out service.
The disposable instrument of finishing oil well packing, filling and clean-out service of the present invention has a central tube that links to each other with oil pipe; A backwash sleeve pipe that is enclosed within the described central tube outside has the backwash passage that annular space constitutes between described backwash sleeve pipe and described central tube; A packing device that is connected on the described backwash sleeve pipe; The lower end of described backwash passage is lower than described packing device, is provided with the well washing hole that is communicated with described backwash passage on the sidewall near the described backwash sleeve pipe of the bottom of described backwash passage; Be provided with the device of limit fluid one-way flow at described well washing hole place: be provided with the filling passage near described central tube lower end part, described filling passage is provided with headstock gear; Described backwash sleeve pipe is fixedlyed connected by screw thread with described central tube.
The disposable method of finishing oil well packing, filling and clean-out service of the present invention may further comprise the steps:
A. disposable instrument and the oil pipe of finishing oil well packing, filling and clean-out service is assembled together, forms tubing string;
B. in needs carry out the oil gas well of sand control treatment, with the disposable instrument of oil well packing, filling and clean-out service and the tubing string that oil pipe is formed-finished down to the precalculated position;
C, base sealed packer;
D. open fill passage;
E. provide high pressure to take the sand flow body in oil pipe by the surface pump group, high pressure is taken the sand flow body, and ' the filling passage of inferior packing tool enters the annular space between oil pipe and sleeve pipe, after the perforation that sleeve pipe is foretold enters oil reservoir through oil pipe, packing high pressure;
F. by pumping into well-flushing liquid in the annular space of surface pump group between oil pipe and sleeve pipe, flushing fluid enters in the oil pipe through disposable backwash passage, the filling passage of finishing the instrument of oil well packing, filling and clean-out service, and the sand in the oil pipe is washed to ground.
In addition, among the best described installation step a, also fit on sand screen and plug according to this in the bottom of the disposable instrument of finishing oil well packing, filling and clean-out service.
Wherein said base sealed packer step can be for applying hydraulic coupling in the central tube of the disposable instrument of finishing oil well packing, filling and clean-out service, when the hydraulic coupling that is applied reaches first predetermined pressure, make the packer on the disposable instrument of finishing oil well packing, filling and clean-out service realize the seat envelope.
Wherein, described open fill passage step is for applying hydraulic coupling in the central tube of the disposable instrument of finishing oil well packing, filling and clean-out service, when the hydraulic coupling that is applied reaches second predetermined pressure, the filling passage on the disposable instrument of finishing oil well packing, filling and clean-out service is opened.
After described well-flushing step is finished, central tube is proposed from tubing string, simultaneously with the sealing of filling channel seal ground.
After adopting above-mentioned tool and method, make sand control treatment construction simple: packer and high pressure one-step filling are signed an undertaking and are lumped together, and have reduced the number of times of a lower tubular column, and then have reduced operation and account for the well time, have saved the ground construction expense.Sand control life is long: because big discharge capacity high pressure combines stratum filling and wellbore fillup, guaranteed that pack gravel and empty perisporium closely inlay, effectively the sand control radius is big, formed dynamical sand block barrier, so period of validity is long: overcome the filling of overhead bowl formula and borehole wall dirt is scraped the deficiency that results in blockage to sand screen.Simultaneously, pollution and the easier advantage of well workover that method of the present invention also has the fluid producing intensity height, the power of carrying is strong, reduce the fourth oil reservoir.
Accompanying drawing is described
For making the present invention can be by clearer understanding, the present invention is described further with reference to the accompanying drawings and in conjunction with the embodiments below.
Fig. 1 be the disposable instrument of finishing oil well packing, filling and clean-out service of the present invention a specific embodiment partly cut open structural representation;
Fig. 2 is the schematic diagram of the stowing operation of the disposable method of finishing oil well packing, filling and clean-out service of the present invention;
Fig. 3 is the schematic diagram of anti-flushing well process of the present invention.
The specific embodiment
As shown in the figure, the disposable mechanism that finishes oil well packing, filling and clean-out service of present embodiment comprises a central tube 4 that links to each other with oil pipe 13; Be with one in the outside of central tube 4 and fixedly connected the backwash sleeve pipe that constitutes with filling pipe 6, wherein have 14:one packing devices 1 of backwash passage that annular space constitutes between backwash joint 2 and the described central tube and be connected on the described backwash joint 2 by backwash joint 2; Described backwash passage 14 from top to down pass packing device 1, its lower end is lower than described packing device 1, be provided with the well washing hole that is communicated with described backwash passage 14 on the wall near the bottom of described backwash passage 14 on the backwash joint 2:the backwash ring 3 and first spring 5 are construed as limiting the device of one-directional fluid flow, wherein and 2 of the described backwash joints backwash ring 3 that is in the sealed engagement state mutually under the effect of first spring 5, make described well washing hole be in the seal closure state usually. by at least one first pack hole of offering near the bottom of described central tube 4 and on the described filling pipe 6 with described central tube 4 on second pack hole offered of the corresponding position of first pack hole form filling passage 15; And place during by a tubular ball seat pipe nipple 8 and an operation arrange in the steel ball 7 of described ball seat pipe nipple 8 upper ends and sealed ball seat pipe nipple 8 upper port and the annular space between central tube 4 and filling tube 6 consist of respectively the headstock gear that opens and closes first and second pack holes by sealing drum 10 and second spring 11, wherein said ball seat pipe nipple 8 is positioned the position of closed described first pack hole by a shop bolt that is easy to cut off 9. And second spring 11 has the tendency of sealing drum 10 being pushed close to second pack hole.But the constraint of acceptor center pipe 4, sealing drum 10 are in the position that described second pack hole is opened.In the present embodiment, a connector 12 is being fixed in the lower end of described filling tube 6, second spring 11 is being supported on the top of connector 12, and circle is being connected sand screen 16 and plug 18 with the lower end cylindrical of described central tube 4 according to this by the bottom that anti-screw thread is fixedly connected on joint 12 in the upper end of connector 12.
Wherein, packer 1 can adopt existing device with response function, and the packer that adapts most with present embodiment is disclosed in the utility model patent of ZL99221426.2 number " multistage locking of downhole tool and relieving mechanism " by name.Because operating principle and the working method to this mechanism done detailed explanation in the prospectus of this part patent, thereby only just relevant with the present invention here working method describes.
Referring to Fig. 2, with the disposable instrument of oil well packing, filling and clean-out service of finishing of the foregoing description of the steel ball 7 of not packing into behind the precalculated position, from the top of oil pipe 13 through central tube 4 steel ball 7 is put into the top of ball seat pipe nipple 8, in central tube 4 pipes, apply hydraulic coupling then.Steel ball 7 separated with the disposable other parts of finishing the instrument of oil well packing, filling and clean-out service be lowered in the oil well, make the disposable instrument of oil well packing, filling and clean-out service of finishing when being lowered to oil well, well liquid can circulate in the disposable instrument of finishing oil well packing, filling and clean-out service, guarantee pressure balance inside and outside the packing primary filling instrument with this, when avoiding the disposable instrument of finishing oil well packing, filling and clean-out service to be lowered in the oil well, because of the imbalance of external and internal pressure causes damaging.Fall into the top of ball seat pipe nipple 8 when steel ball 7 after, the top-down channel jam of liquid.Applying hydraulic coupling this moment in central tube 4 makes the pressure in the central tube 4 raise, as described in the manual of ZL99221426.2 utility model patent, after the high pressure of central tube 4 inside reached first predetermined value, packer 1 outside spreading made the oil jacket annular space of 19 of the disposable instrument of finishing oil well packing, filling and clean-out service and oil well casings by packing.After the hydraulic coupling in the central tube 4 further was elevated to one second predetermined pressure, it is descending that ball seat pipe nipple 8 is cut off shop bolt 9, and first pack hole on the central tube 4 is opened.This moment first pack hole on the central tube 4 with filling tube 6 on second pack hole that opens wide constituted the filling passage 15 that is communicated with inside and outside the disposable instrument of finishing oil well packing, filling and clean-out service.The high pressure that this moment, the surface pump group provided is taken the sand flow body, enters the annular space of central tube 4 and 19 of oil well casings through central tube 4, filling passage 15, and the perforation that passes through on the sleeve pipe 19 enters oil reservoir 17 again.The rising of the pressure that is provided along with the surface pump group, the dirty empty and pit shaft in stratum is filled with solid according to this.
Referring to Fig. 3, after sand off, in the oil jacket annular space, pump into flushing fluid from ground, flushing fluid enters the backwash passage 14 of 4 of backwash joint 2 and central tubes at the position of packer more than 1, and arrival well washing hole, continuous rising along with flushing fluid pressure, when this pressure power on the backwash ring 3 of acting on is enough to overcome the thrust of second spring 5, backwash ring 3 moves axially, thereby well washing hole is opened, this moment, flushing fluid was in well washing hole enters the oil jacket annular space of packer below 1 once more, again in filling passage 15 enters central tube 4 pipes.Through continual flushing the sand in central tube 4 pipes is washed till ground.
After well-flushing finishes, just changeing central tube 4 and making the upper end disengagement of its lower end and connector 12 realize giving up.Along with withdrawing from of central tube 4, the constraint of 4 pairs of sealing drums 10 of central tube also disappears immediately, and this moment, sealing drum 10 moved up under the effect of second spring 11, and then second pack hole on the filling tube 6 is sealed.So far promptly finished the disposable process of finishing oil well packing, filling and clean-out service.
The above embodiment of the present invention only is for example of the present invention clearly is described, and is not to be qualification to embodiments of the present invention.For those of ordinary skill in the field, obviously can make other changes in different forms on the basis of the above description, for example structurally, can also substitute shop bolt 9 with bumping pearl billiards structure or ball seat pin; The parts that steel ball 7 also can adopt bullet or other can stop up ball seat pipe nipple 8 tops replace; The device of described limit fluid one-way flow can adopt other one way valve that is suitable for or the like equally.Here need not also can't give exhaustive to all embodiments.And these conspicuous variations or change still are among protection scope of the present invention.
Claims (6)
1. a disposable instrument of finishing oil well packing, filling and clean-out service is characterized in that having a central tube (4) that links to each other with oil pipe (13); A backwash sleeve pipe that is enclosed within the described central tube outside has the backwash passage (14) that annular space constitutes between described backwash sleeve pipe and described central tube (4); A packing device (1) that is connected on the described backwash sleeve pipe; The lower end of described backwash passage (14) is lower than described packing device (1), is provided with the well washing hole that is communicated with described backwash passage (14) on the sidewall near the described backwash sleeve pipe of the bottom of described backwash passage (14); Be provided with the device of limit fluid one-way flow at described well washing hole place; Be provided with filling passage (15) near described central tube (4) lower end part, described filling passage (15) is provided with headstock gear; Described backwash sleeve pipe is fixedlyed connected by screw thread with described central tube (4).
2. disposable method of finishing oil well packing, filling and clean-out service may further comprise the steps:
A. disposable instrument and the oil pipe (13) of finishing oil well packing, filling and clean-out service is assembled together, forms tubing string;
B. in needs carry out the oil gas well of sand control treatment, the tubing string that packing high pressure primary filling instrument and oil pipe (13) are formed is down to the precalculated position;
C. base sealed packer (1);
D. open fill passage;
E. in oil pipe (13), provide high pressure to take the sand flow body by the surface pump group, high pressure is taken the sand flow body through oil pipe (13), the disposable filling passage (15) of finishing the instrument of oil well packing, filling and clean-out service, enter the annular space between oil pipe (13) and sleeve pipe (19), after the perforation on the sleeve pipe (19) enters oil reservoir (17);
F. by pumping into well-flushing liquid in the annular space of surface pump group between oil pipe (13) and sleeve pipe (19), flushing fluid enters in the oil pipe (13) through disposable backwash passage (14), the filling passage (15) of finishing the instrument of oil well packing, filling and clean-out service, and the sand in the oil pipe (13) is washed to ground.
3. the disposable method of finishing oil well packing, filling and clean-out service according to claim 2, it is characterized in that in described installation step a, also fit on sand screen (16) and plug (18) according to this in the bottom of the disposable instrument of finishing oil well packing, filling and clean-out service.
4. the disposable method of finishing oil well packing, filling and clean-out service according to claim 2, it is characterized in that described base sealed packer step is for applying hydraulic coupling in the disposable central tube (4) of finishing the instrument of oil well packing, filling and clean-out service, when the hydraulic coupling that is applied reaches first predetermined pressure, make the packer (1) on the disposable instrument of finishing oil well packing, filling and clean-out service realize the seat envelope.
5. the disposable method of finishing oil well packing, filling and clean-out service according to claim 2, it is characterized in that described open fill passage step is for applying hydraulic coupling in the disposable central tube (4) of finishing the instrument of oil well packing, filling and clean-out service, when the hydraulic coupling that is applied reaches second predetermined pressure, the filling passage (14) on the disposable instrument of finishing oil well packing, filling and clean-out service is opened.
6. the disposable method of finishing oil well packing, filling and clean-out service according to claim 2 is characterized in that after the well-flushing step is finished, and central tube (4) is proposed from tubing string, simultaneously filling passage (14) is sealed shut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00123632A CN1112502C (en) | 2000-08-25 | 2000-08-25 | One-step filling technology for isolating high pressure and its tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00123632A CN1112502C (en) | 2000-08-25 | 2000-08-25 | One-step filling technology for isolating high pressure and its tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1281088A CN1281088A (en) | 2001-01-24 |
| CN1112502C true CN1112502C (en) | 2003-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00123632A Expired - Lifetime CN1112502C (en) | 2000-08-25 | 2000-08-25 | One-step filling technology for isolating high pressure and its tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1112502C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300441C (en) * | 2003-10-23 | 2007-02-14 | 中国石化胜利油田有限公司采油工艺研究院 | Well washing method of hierarchical water injection well and its underwell tubular column |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100458024C (en) * | 2006-06-19 | 2009-02-04 | 宫述亮 | Method for plugging tube orifice of well for person in ground pipes |
| CN101078341B (en) * | 2007-05-25 | 2012-02-08 | 中国石化集团胜利石油管理局石油开发中心 | Oil gas water well open hole filling sand prevention completion method and tool |
| CN101915071A (en) * | 2010-07-07 | 2010-12-15 | 招远金河石油设备技术开发有限公司 | Tool for filling and backwashing oil well |
| US8672023B2 (en) * | 2011-03-29 | 2014-03-18 | Baker Hughes Incorporated | Apparatus and method for completing wells using slurry containing a shape-memory material particles |
| CN102808604B (en) * | 2012-08-24 | 2015-08-19 | 招远金河石油设备技术开发有限公司 | Pressure break high pressure packing filling body |
| CN107100594B (en) * | 2017-06-07 | 2018-05-18 | 山东胜利石油装备产业技术研究院 | A kind of open-hole horizontal well bottom inversely fills multilayer sand control pipe and method |
| CN112145126B (en) * | 2020-10-10 | 2022-06-24 | 德州金玉石油机械科技有限公司 | Oil well composite sand-blocking-prevention ball seat and method |
| CN114278259B (en) * | 2022-01-10 | 2024-08-23 | 东营市正能石油科技有限公司 | Filling tool for oilfield operation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2097900U (en) * | 1991-03-27 | 1992-03-04 | 大庆石油管理局第七采油厂 | Machinery oil well hot washing pump oil-separating layer device |
| CN2146566Y (en) * | 1992-11-03 | 1993-11-17 | 金铮 | Hot cleaning paraffin temp-control packer |
| CN2254120Y (en) * | 1994-12-20 | 1997-05-14 | 胜利石油管理局滨南采油厂采油二矿 | Secondary well cleaning device for combined rod type oil pumping unit |
| US5977032A (en) * | 1998-09-26 | 1999-11-02 | Atlantic Richfield Company | Acidic surfactant composition and method for cleaning wellbore and flowline surfaces using the surfactant composition |
| CN2378533Y (en) * | 1998-11-07 | 2000-05-17 | 王孟芝 | Apparatus for cleaning waterwell sand out and gravel stuffing |
-
2000
- 2000-08-25 CN CN00123632A patent/CN1112502C/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2097900U (en) * | 1991-03-27 | 1992-03-04 | 大庆石油管理局第七采油厂 | Machinery oil well hot washing pump oil-separating layer device |
| CN2146566Y (en) * | 1992-11-03 | 1993-11-17 | 金铮 | Hot cleaning paraffin temp-control packer |
| CN2254120Y (en) * | 1994-12-20 | 1997-05-14 | 胜利石油管理局滨南采油厂采油二矿 | Secondary well cleaning device for combined rod type oil pumping unit |
| US5977032A (en) * | 1998-09-26 | 1999-11-02 | Atlantic Richfield Company | Acidic surfactant composition and method for cleaning wellbore and flowline surfaces using the surfactant composition |
| CN2378533Y (en) * | 1998-11-07 | 2000-05-17 | 王孟芝 | Apparatus for cleaning waterwell sand out and gravel stuffing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300441C (en) * | 2003-10-23 | 2007-02-14 | 中国石化胜利油田有限公司采油工艺研究院 | Well washing method of hierarchical water injection well and its underwell tubular column |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1281088A (en) | 2001-01-24 |
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Owner name: SHENGLI OILFIELD XINDATONG PETROLEUM TECHNOLOGY C Free format text: FORMER OWNER: WANG SONG Effective date: 20040730 |
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Effective date of registration: 20040730 Address after: 257900 Shandong Province, Dongying City Development Zone, James State Road No. 399 Patentee after: Shengli Oilfield new Datong Petroleum Technology Co Ltd Address before: 257200 operation section, Hekou Oil production plant, Hekou District, Dongying, Shandong Patentee before: Wang Song |
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