CN104141467B - Coal bed gas well tail pipe, which is salvaged, merges operation Special Tool and its operation technique - Google Patents
Coal bed gas well tail pipe, which is salvaged, merges operation Special Tool and its operation technique Download PDFInfo
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- CN104141467B CN104141467B CN201410335824.4A CN201410335824A CN104141467B CN 104141467 B CN104141467 B CN 104141467B CN 201410335824 A CN201410335824 A CN 201410335824A CN 104141467 B CN104141467 B CN 104141467B
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Abstract
The invention belongs to the technical field of coal bed gas well complexity down-hole accident, and in particular to a kind of coal bed gas well tail pipe, which is salvaged, merges operation Special Tool and its operation technique.The present invention buries the problem for hindering above to propose process implementation to solve former segmentation operation sand, and then a kind of coal bed gas well tail pipe is provided and salvaged and merges operation Special Tool and its operation technique, described Special Tool is integral type hierarchic structure, termination, a path changing head and the secondary path changing head being sequentially reduced including diameter, the box being connected with oil pipe pin thread is provided with the termination, path changing head and secondary path changing head are helicitic texture, and some hydrophthalmias are uniformly provided with around its axis on the transiting rod between a path changing head and secondary path changing head.It is connected respectively with core sleeve pipe, tail pipe and screen casing using a path changing head of the Special Tool and secondary path changing head, eliminates the flow chart that the upper lifting pipe post after sand washing changes screw tap, saved man-hour, while is avoided and the secondary sand of tail pipe is buried after sandinteeter sinks.
Description
Technical field
The invention belongs to the technical field of coal bed gas well complexity down-hole accident, and in particular to a kind of coal bed gas well tail pipe is salvaged
Merge operation Special Tool and its operation technique.
Background technology
In the pressure break process of coal bed gas well, single coal bed exploitation accumulation injection quartz sand 40-60 m3, multiple seam is developed tired
Product injection quartz sand is more than 80 m3.After coal bed gas well puts into production, part well is acted on by original geological stress or row driving force, stone
Sand, which returns, to be told to production pit shaft, causes to bury pump accident.The currently used means for handling the accident are that segmentation is salvaged：First
Accident head is entangled using sleeve pipe to wash by water downwards, makes to return on the sand grains of burial accident tail pipe；Then sleeve pipe, the connection of tripping in screw tap are above proposed
Tail pipe and screen casing are salvaged.But when carrying out segmentation operation process, above carry sleeve pipe, tripping in screw tap this process need to last 5 hours,
After causing sandinteeter sinking, the secondary sand of tail pipe is buried, sand can not be salvaged by, which causing, buries tail pipe and screen casing.
The content of the invention
It is contemplated that when the tail pipe and screen casing for coal bed gas well carry out segmental salvage, easily there is secondary sand and bury, make
Into can not salvage the problem of sand buries tail pipe and screen casing, so provide a kind of coal bed gas well tail pipe salvage merge operation Special Tool and
Its operation technique.
The present invention adopts the following technical scheme that：
A kind of coal bed gas well tail pipe, which is salvaged, merges operation Special Tool, and described Special Tool is integral type hierarchic structure,
Termination, a path changing head and the secondary path changing head being sequentially reduced including diameter, are provided with the termination and oil pipe pin thread coordinates and connected
The box connect, a path changing head and secondary path changing head are helicitic texture, the transition between a path changing head and secondary path changing head
On bar some hydrophthalmias are uniformly provided with around its axis.
A diameter of 108mm of a described path changing head.
A diameter of 73mm of described secondary path changing head.
The a diameter of 73mm of described box.
Using above-mentioned Special Tool carry out fishing operation technique step be：
A, the termination of the Special Tool is connected with oil pipe pin thread, a path changing head and core sleeve pipe connection, and made in well
Accident headgear in core sleeve pipe；
B, make to return on the sand grains in core sleeve pipe to underground water-injection using the pump with core sleeve pipe connection, expose tail pipe and
Screen casing；
C, continue to transfer the Special Tool, secondary path changing head is connected with tail pipe and screen casing, and above carry the Special Tool, beat
Drag for tail pipe and screen casing, during salvaging, water sand return is returned by hydrophthalmia.
The present invention has the advantages that：
The present invention is taken over using special secondary reducing band hydrophthalmia, realizes the hydraulic sand washing that coal bed gas drags for pump workover treatment
The merging operation of process is above proposed, former segmentation operation sand is not only solved and buries the problem for hindering above to propose process implementation, while also subtract
Lack man-hour, effectively increase operating efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of Special Tool of the present invention；
Fig. 2 is the working state figure of Special Tool of the present invention；
In figure：1- boxes, 2- terminations, path changing head of 3-, 4- hydrophthalmias, bis- path changing heads of 5-, 6- oil pipes pin thread, 7- cores
Sleeve pipe, 8- tail pipes, 9- screen casings, 10- sand grains.
Embodiment
With reference to accompanying drawing, the embodiment of the present invention is described further：
As shown in figure 1, a kind of coal bed gas well tail pipe, which is salvaged, merges operation Special Tool, described Special Tool is integral type
Hierarchic structure, including the path changing head 3 of termination 2, one times and secondary path changing head 5 that diameter is sequentially reduced, it is provided with the termination 2 and oil
The box 1 that pipe pin thread 6 is connected, a path changing head 3 and secondary path changing head 5 are helicitic texture, a path changing head 3 and secondary
On transiting rod between path changing head 5 some hydrophthalmias 4 are uniformly provided with around its axis.
After occurring burying pump accident in coal bed gas well, first by the termination 2 of the Special Tool and a diameter of 73mm oil pipe
Pin thread 6 is connected, and a path changing head 3 is connected with diameter 108mm core sleeve pipe 7, and makes the accident headgear in well in core sleeve pipe
In 7.
, to underground water-injection, make to return on the sand grains in core sleeve pipe 7, expose the He of tail pipe 8 using with the pump that core sleeve pipe 7 is connected
Screen casing 9.
Continue to transfer the Special Tool, the tail pipe 8 and screen casing 9 for making secondary path changing head 5 and diameter 73mm are connected, and are above carried
The Special Tool, salvages tail pipe 8 and screen casing 9, and during salvaging, water sand return is returned by hydrophthalmia 4.
Using the Special Tool a path changing head 3 and secondary path changing head 5 respectively with core sleeve pipe 7, tail pipe 8 and screen casing 9
Connection, the flow chart that the upper lifting pipe post after sand washing changes screw tap is eliminated, has saved 5 man-hours, avoids sandinteeter sinking
Afterwards, the secondary sand of tail pipe is buried.And during salvaging, water sand return is returned by hydrophthalmia 4, operation is above proposed in sand washing, it is final complete
Paired sand buries the fishing of tail pipe and screen casing.
Claims (4)
1. a kind of coal bed gas well tail pipe, which is salvaged, merges operation Special Tool, it is characterised in that described Special Tool is integral type rank
Terraced structure, including the termination that diameter is sequentially reduced（2）, a path changing head（3）With secondary path changing head（5）, the termination（2）Inside open
Have and oil pipe pin thread（6）The box of mating connection（1）, a path changing head（3）With secondary path changing head（5）It is helicitic texture, one
Secondary path changing head（3）With secondary path changing head（5）Between transiting rod on around its axis be uniformly provided with some hydrophthalmias（4）；
The fishing processing step of the Special Tool is：
By the termination of the Special Tool（2）With oil pipe pin thread（6）Connection, a path changing head（3）With core sleeve pipe（7）Connection, and
Make the accident headgear in well in core sleeve pipe（7）It is interior；
Using with core sleeve pipe（7）The pump of connection makes core sleeve pipe to underground water-injection（7）Returned on interior sand grains, expose tail pipe（8）
And screen casing（9）；
Continue to transfer the Special Tool, make secondary path changing head（5）With tail pipe（8）And screen casing（9）Connection, and above put forward the extraordinary work
Tool, salvage tail pipe（8）And screen casing（9）, during salvaging, pass through hydrophthalmia（4）Return water sand return；
Path changing head（3）Diameter and core sleeve pipe（7）Diameter it is equal, the secondary path changing head（5）Diameter with
Tail pipe（8）And screen casing（9）Diameter it is equal.
2. coal bed gas well tail pipe according to claim 1, which is salvaged, merges operation Special Tool, it is characterised in that：Described one
Secondary path changing head（3）A diameter of 108mm.
3. coal bed gas well tail pipe according to claim 1, which is salvaged, merges operation Special Tool, it is characterised in that：Described two
Secondary path changing head（5）A diameter of 73mm.
4. coal bed gas well tail pipe according to claim 1, which is salvaged, merges operation Special Tool, it is characterised in that：Described mother
Button（1）A diameter of 73mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410335824.4A CN104141467B (en) | 2014-07-16 | 2014-07-16 | Coal bed gas well tail pipe, which is salvaged, merges operation Special Tool and its operation technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410335824.4A CN104141467B (en) | 2014-07-16 | 2014-07-16 | Coal bed gas well tail pipe, which is salvaged, merges operation Special Tool and its operation technique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104141467A CN104141467A (en) | 2014-11-12 |
| CN104141467B true CN104141467B (en) | 2017-12-22 |
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ID=51850779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410335824.4A Active CN104141467B (en) | 2014-07-16 | 2014-07-16 | Coal bed gas well tail pipe, which is salvaged, merges operation Special Tool and its operation technique |
Country Status (1)
| Country | Link |
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| CN (1) | CN104141467B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863537A (en) * | 2015-05-12 | 2015-08-26 | 山西蓝焰煤层气集团有限责任公司 | Intermediate casing recovering and connecting device passing through mined-out region and recovery process |
| CN106481281B (en) * | 2015-08-25 | 2018-11-16 | 中国石油天然气股份有限公司 | A kind of tubular column structure and coal bed gas well system of coal bed gas well |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201363116Y (en) * | 2009-03-20 | 2009-12-16 | 贾延锋 | Integrated process device for sand removal and fishing outside pipe |
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| US1653094A (en) * | 1925-12-23 | 1927-12-20 | William J Hay | Jar for fishing and drilling tools |
| US5348086A (en) * | 1992-10-05 | 1994-09-20 | Trout Randall L | Combination downhole tool |
| CN2517866Y (en) * | 2001-11-17 | 2002-10-23 | 田庆国 | Reversible well-flushing appts. |
| CN2578514Y (en) * | 2002-11-11 | 2003-10-08 | 大庆石油管理局 | Soft substance fishing gear in oil well |
| US6896060B2 (en) * | 2003-03-27 | 2005-05-24 | Impact Selector, Inc. | Downhole jarring tool adjuster |
| CN201083100Y (en) * | 2007-10-11 | 2008-07-09 | 中国海洋石油总公司 | Casing milling salvaging adaptor for oil well |
| CN201116458Y (en) * | 2007-11-30 | 2008-09-17 | 辽河石油勘探局 | Sand flushing reducing fishing spear |
| CN201705259U (en) * | 2010-06-10 | 2011-01-12 | 中国石油化工集团公司 | Casing damage cell naked eye sleeve taking and replacing circulating device |
| CN202064852U (en) * | 2011-05-27 | 2011-12-07 | 中国石油集团川庆钻探工程有限公司川东钻探公司 | Multi-purpose safety joint |
| CN202578612U (en) * | 2012-05-10 | 2012-12-05 | 中国有色金属长沙勘察设计研究院有限公司 | Downhole latch jack |
| CN102953701A (en) * | 2012-11-15 | 2013-03-06 | 中国石油集团西部钻探工程有限公司 | Fishing head of conically spherical pilot bit type drilling tool |
| CN203394397U (en) * | 2013-08-07 | 2014-01-15 | 中国石油化工股份有限公司 | Underground multifunctional sand washing processor |
| CN204082066U (en) * | 2014-07-16 | 2015-01-07 | 山西蓝焰煤层气集团有限责任公司 | Coal bed gas well tail pipe is salvaged and is merged operation Special Tool |
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2014
- 2014-07-16 CN CN201410335824.4A patent/CN104141467B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201363116Y (en) * | 2009-03-20 | 2009-12-16 | 贾延锋 | Integrated process device for sand removal and fishing outside pipe |
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| CN104141467A (en) | 2014-11-12 |
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