CN106869848A - Reaming fishing integrated tool and its fishing method - Google Patents
Reaming fishing integrated tool and its fishing method Download PDFInfo
- Publication number
- CN106869848A CN106869848A CN201710092643.7A CN201710092643A CN106869848A CN 106869848 A CN106869848 A CN 106869848A CN 201710092643 A CN201710092643 A CN 201710092643A CN 106869848 A CN106869848 A CN 106869848A
- Authority
- CN
- China
- Prior art keywords
- reaming
- fishing
- thread making
- integrated tool
- thread
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/16—Grappling tools, e.g. tongs or grabs combined with cutting or destroying means
Abstract
The invention discloses a kind of reaming fishing integrated tool and its fishing method, the instrument offers the tool body of axially extending bore including center, specifically includes top connection, thread making salvaging portion and the reamer being sequentially connected from top to bottom；Wherein, thread making salvaging portion external diameter makes outer side surface institute tapering be 1 from top to bottom along gradually increasing:15~1:20；The triangle external screw thread for thread making is machined with the inwall in thread making salvaging portion；Along the circumferential direction built-up welding has the wolfram steel fragment layer for ream operation on the outer wall of reamer bottom；The reaming fishing integrated tool simple structure, it is continued to use usual die nipple mode and salvages, easy to operate, back-off success rate is high, it is applied to salvage the larger fish of external diameter, corresponding fishing method is coordinated to complete reaming, thread making, fishing by boring for one time, without making a trip repeatedly, effectively the ultradeep well one trip time is reduced.
Description
Technical field
The present invention relates to the underground fish fishing operation field of oil drilling, more particularly to a kind of reaming fishing integrated work
Tool and its fishing method.
Background technology
At present, ultra-deep well operations belong to world-class problem, and such as in Tarim Oilfield, many well depths more than 7000 meters and connect
Nearly 8000 meters, deep-well slim-hole target zone drilling difficulty is big, risk is high, particularly bores after meeting oil-gas Layer, and overflow occurs causes card
The probability of brill is especially big, due to being limited by fish and casing annulus gap, therefore salvages underground fish in ultradeep well slim-hole
As problem, and the smaller generation accident probability of drilling tool is also more.If borehole status are good where fish, die nipple can be directly descended to carry out
During salvaging, once and fish hydrophthalmia is tiny, then die nipple application is restricted, and causes die nipple to complete fish salvaging, therefore, have
Necessity exploitation is a kind of can to complete reaming, the integrated tool of fishing one time.
The content of the invention
Can be bored under one time it is an object of the invention to provide one kind can complete to realize reaming, fishing to underground fish
Reaming fishing integrated tool.
It is a further object of the present invention to provide a kind of fishing side realized using above-mentioned reaming fishing integrated tool
Method.
Therefore, technical solution of the present invention is as follows：
A kind of reaming fishing integrated tool, including center offers the tool body of axially extending bore, it is characterised in that institute
Stating tool body includes the top connection, thread making salvaging portion and the reamer that are sequentially connected from top to bottom；Wherein, the thread making salvaging portion
External diameter makes outer side surface institute tapering be 1 from top to bottom along gradually increasing:15~1:20；In the inwall in the thread making salvaging portion
On be machined with triangle external screw thread；Along the circumferential direction heap is welded with wolfram steel fragment layer on the outer wall of the reamer bottom.
Further, top connection top inwall is provided with the connection internal thread for being connected with drilling tool.
Further, the thread making salvaging portion outer side surface institute tapering is 1:16.
Further, the triangle external screw thread is 8 teeth/inch.
Further, the inside and outside footpath difference >=10mm in the thread making salvaging portion bottom, it is ensured that required lifting during salvaging,
Torsional strength, reduces the risk twisted off during die nipple is salvaged, and increases fishing success ratio.
Further, the wolfram steel fragment of wolfram steel fragment layer described in built-up welding is that particle diameter is 3~5mm, the tungsten of Vickers hardness >=10K
Steel particles.
A kind of fishing method carried out using above-mentioned reaming fishing integrated tool, step is as follows：
S1, many drilling rods that will be sequentially connected combine in dozen with the top connection threaded connection of reaming fishing integrated tool
Drag for tubing string and transfer to well, specific decentralization depth is to make reaming fishing integrated tool bottom apart from lower section fish top of fish top
0.2~0.5m of end, turn on pump rinses fish head 15~20 minutes, cleaning fish head top deposit；
The rotating speed that S2, setting top are driven, continues to transfer fishing string and fish head in souning out decentralization process with 10 revs/min of rotating speed
To the reaction force of fishing string：If being hampered during no more than 4.9KN, the upper torque limit for setting top drive or rotating disk rotation drilling tool is
8KN.m, and ream operation is carried out to fish fish head outer wall；If being hampered during more than 4.9KN, stop decentralization fishing string, using slow
It is slow that gradually down the mode of reaming close to after fish head, then carries out ream operation；
S3, ream operation and thread making operation：
S301, observation ream operation initial time section change in torque：If in 10~15 minutes after ream operation starts
Change in torque amount is no more than 1KN.m, and the Top Drive RPM of fishing string decentralization will be controlled to bring up to 15~20 revs/min carries out reaming work
Industry；If change in torque amount is more than 1KN.m, original rotating speed is maintained to carry out ream operation；
After S302, thread making operation start, reaming speed is controlled for 8~12min/cm, and often 8~12cm of drilling carries chamfering bit tool
Once；
During above-mentioned steps S301 and S302, the change of the length and corresponding moment of torsion of decentralization tubing string of holding the record
Situation, to calculate the reaming length for actually accomplishing and the thread making length for actually accomplishing；
Whether S4, the length of the actual reaming section of confirmation meet fish head theory reaming length, and have true by proposing chamfering bit repeatedly
Recognize thread making segment length and whether meet salvaging and require, finally by putting forward fish fish head in reaming fishing integrated tool back-off, salvaging.
The reaming fishing integrated tool simple structure, it is continued to use usual die nipple mode and salvages, easy to operate, back-off into
Power is high, is applied to salvage the larger fish of external diameter, is drilled into reaming, thread making, fishing one time, without removing repeatedly
Bore, effectively reduce the ultradeep well one trip time.
Brief description of the drawings
Fig. 1 is the structural representation of reaming fishing integrated tool of the invention.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described further, but following embodiments are absolutely not to this hair
It is bright to have any limitation.
Drilling tool used by current slim-hole is generally 27/8 " nonstandard drilling rod, the length about 350mm of its female joint, hydrophthalmia internal diameter
It is 41mm, drilling rod body internal diameter is 54.6mm, and the external diameter of the conventional die nipple in scene is that, more than 45mm, directly using cannot be to this
Small-sized drilling tool is salvaged.
As shown in Figure 1 for it is a kind of be reaming fishing integrated work less than the small-sized drilling tools of 48mm suitable for hydrophthalmia inside diameter ranges
Tool, it includes tool body, and center offers axially extending bore, i.e. hydrophthalmia 2, and tool body total length is 1090mm；Tool body
Including the top connection 1, thread making salvaging portion 3 and the reamer 5 that are sequentially connected from top to bottom；Specifically, top connection 1, thread making salvaging portion 3
It is made of the T8 Steel materials with high rigidity and high-wearing feature with reamer 5, specific chemical composition can be found in GB/T1298-
1986；Wherein, the outer wall of thread making salvaging portion 3 by after Surface hardening treatment using welding procedure respectively with reamer 5 and top connection 1
It is connected；
The length of top connection 1 is 180m, and external diameter is 86mm, and hydrophthalmia internal diameter is 10.5mm；Use is machined with its top inwall
" the XT16 type left-hand threads of drilling rod in the connection internal thread being connected with top drilling tool, specially suitable for 27/8；
The length in thread making salvaging portion 3 is 500mm, and its external diameter shrinks radially inward from top to bottom；Specifically, the thread making is beaten
The minimum outer diameter in portion 3 is dragged for for 38mm, maximum outside diameter are 55mm, makes the outer wall institute tapering of thread making salvaging portion 3 be 1:16, i.e. thread making are beaten
Drag for the angle between the inwall wall in portion 3 and axial direction and be about 1.78 °；The hydrophthalmia internal diameter in thread making salvaging portion 3 and the hydrophthalmia of top connection 1
Internal diameter is consistent, is 10.5mm；The triangle external screw thread 4 of 8 teeth/inch is machined with the inwall in thread making salvaging portion 3, for making
Button；
The length of reamer 5 is 340mm, and its external diameter is 38mm, internal diameter is 10.5mm；On the bottom outer wall of reamer 5
Along the circumferential direction heap is welded with length for 130mm, thickness are 10mm wolfram steel fragment layer 6；Wherein, for built-up welding wolfram steel fragment layer 6
Wolfram steel fragment is only second to the wolfram steel particle of diamond, the specially steel alloy of tungstenic 18% using hardness, and particle size range is 3~5mm, dimension
Family name's hardness is 10K.
When using, boring is carried out to the tiny hydrophthalmia in fish top of fish portion using the reamer 5 of the reaming fishing integrated tool
Hole expands internal diameter, specifically, the hydrophthalmia internal diameter for being located at the tool joint box in shaft bottom is expanded into 48mm or so, close to body
Internal diameter, is then salvaged after thread making salvaging portion 3 carries out thread making.
Specifically, the fishing method for being carried out using above-mentioned reaming fishing integrated tool, is comprised the following specific steps that：
S1, many drilling rods that will be sequentially connected combine in dozen with the top connection threaded connection of reaming fishing integrated tool
Drag for tubing string and transfer to well, specific decentralization depth is to make reaming fishing integrated tool bottom apart from lower section fish top of fish top
End about 0.2m, turn on pump rinses fish head 15 minutes, cleaning fish head top deposit；
The rotating speed that S2, setting top are driven, continues to transfer fishing string and fish head in souning out decentralization process with 10 revs/min of rotating speed
To the reaction force of fishing string：
If 1 is hampered during no more than 4.9KN, the upper torque limit for setting top drive or rotating disk rotation drilling tool is 8KN.m, and to fish
Fish head inwall carries out ream operation；
If 2 are hampered during more than 4.9KN, stop decentralization fishing string, using slowly gradually down by the way of reaming close to fish
After head, then carry out ream operation；
S3, while carrying out ream operation and thread making operation：Included simultaneously for expanding due to the reaming fishing integrated tool
The reamer 5 of hole operation and the thread making salvaging portion 3 for thread making operation, therefore, when to one section of fish head hydrophthalmia internal diameter reaming
After distance, thread making salvaging portion 3 initially enters in fish head hydrophthalmia and carries out thread making to hydrophthalmia inwall；Comprise the following steps that：
If 1) 10~15 minutes internal torque variable quantities after ream operation starts are no more than 1KN.m, pipe is salvaged into control
The Top Drive RPM of post decentralization brings up to 20 revs/min carries out ream operation；
If 2) change in torque amount is more than 1KN.m, original rotating speed is maintained to carry out ream operation；
After S302, thread making operation start, reaming speed is controlled for 10min/cm, and often drilling 10cm carries chamfering bit tool once,
And determine that the iron filings dropped during institute's reaming and thread making are not deposited in reaming and salvage one according to the situation that is hampered put above is put
Body chemical industry has and drilling tool to be salvaged between, with anti-jam fishing string；
During above-mentioned steps S301 and S302, the rotation under the rotating speed of fishing string of holding the record and corresponding rotating speed
The number of turns, and the reaming length that is actually accomplished according to the length computation of reamer 5 of reaming fishing integrated tool and actually accomplish
Thread making length；Specifically, thickening part hydrophthalmia length about 350mm in the female joint of the drilling tool salvaged due to its correspondence, therefore make
The mother of the drilling tool is should be greater than in design length with the lengthening part 4 of the reaming fishing integrated tool and the total length of reamer 5
The length of thickening part hydrophthalmia in joint.
S4, the theoretical reaming length needed according to known fish head external diameter and the good fish head of length computation, and confirm actual reaming
Whether the length of section meets fish head theory reaming length；The UR of finishing touch one section, has confirmation reaming by proposing chamfering bit repeatedly
Whether segment length and thread making segment length meet salvaging requires, and then fish fish head is beaten by reaming fishing integrated tool
Drag for and above carry, fishing is completed.
Wherein, after the first time reaming in each section of fish head is finished, propose fish head position and above steps may be repeated multiple times
S301, plays the fish head after the smooth reaming of finishing, is beneficial to further thread making operation.
The above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, those of ordinary skill in the art are to this hair
Other modifications or equivalent that bright technical scheme is made, without departing from the spirit and scope of technical solution of the present invention,
All should cover in the middle of scope of the presently claimed invention.
Claims (7)
1. a kind of reaming fishing integrated tool, it is characterised in that the tool body of axially extending bore is offered including center, it is special
Levy and be, the tool body includes the top connection (1), thread making salvaging portion (3) and the reamer (5) that are sequentially connected from top to bottom；
Wherein,
Thread making salvaging portion (3) external diameter makes outer side surface institute tapering be 1 from top to bottom along gradually increasing:15~1:20；
Triangle external screw thread (4) is machined with the inwall of the thread making salvaging portion (3)；
Along the circumferential direction heap is welded with wolfram steel fragment layer (6) on the outer wall of reamer (5) bottom.
2. reaming fishing integrated tool according to claim 1, it is characterised in that top connection (1) top inwall
It is provided with the connection internal thread for being connected with drilling tool.
3. reaming fishing integrated tool according to claim 1, it is characterised in that thread making salvaging portion (3) outside
Wall institute tapering is 1:16.
4. reaming fishing integrated tool according to claim 1, it is characterised in that the triangle external screw thread (4) is 8
Tooth/inch.
5. reaming fishing integrated tool according to claim 1, it is characterised in that thread making salvaging portion (3) bottom
Inside and outside footpath difference >=10mm.
6. reaming fishing integrated tool according to claim 1, it is characterised in that wolfram steel fragment layer (6) described in built-up welding
Wolfram steel fragment for particle diameter be 3~5mm, the wolfram steel particle of Vickers hardness >=10K.
7. the fishing method that a kind of use reaming fishing integrated tool as claimed in claim 1 is carried out, its feature exists
In step is as follows：
S1, many drilling rods that will be sequentially connected are threadedly coupled with the top connection of reaming fishing integrated tool and are combined into salvaging pipe
Post is simultaneously transferred to well, and specific decentralization depth is to make reaming fishing integrated tool bottom apart from lower section fish top of fish top
0.2~0.5m, turn on pump rinses fish head 15~20 minutes, cleaning fish head top deposit；
The rotating speed that S2, setting top are driven, continues to transfer fishing string and fish head is fought each other in souning out decentralization process with 10 revs/min of rotating speed
Drag for the reaction force of tubing string：If being hampered during no more than 4.9KN, the upper torque limit for setting top drive or rotating disk rotation drilling tool is 8KN.m,
And ream operation is carried out to fish fish head outer wall；If being hampered during more than 4.9KN, stop decentralization fishing string, using slowly gradually
Down the mode of reaming is close to after fish head, then carries out ream operation；
S3, ream operation and thread making operation：
S301, observation ream operation initial time section change in torque：If 10~15 minutes internal torques after ream operation starts
Variable quantity is no more than 1KN.m, and the Top Drive RPM of fishing string decentralization will be controlled to bring up to 15~20 revs/min carries out ream operation；
If change in torque amount is more than 1KN.m, original rotating speed is maintained to carry out ream operation；
After S302, thread making operation start, reaming speed is controlled for 8~12min/cm, and often 8~12cm of drilling carries chamfering bit tool one
It is secondary；
During above-mentioned steps S301 and S302, the change feelings of the hold the record length and corresponding moment of torsion of transferring tubing string
Condition, to calculate the reaming length for actually accomplishing and the thread making length for actually accomplishing；
Whether S4, the length of the actual reaming section of confirmation meet fish head theory reaming length, and are made by proposing chamfering bit tool confirmation repeatedly
Whether button segment length meets salvaging requires, finally by putting forward fish fish head in reaming fishing integrated tool back-off, salvaging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710092643.7A CN106869848A (en) | 2017-02-21 | 2017-02-21 | Reaming fishing integrated tool and its fishing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710092643.7A CN106869848A (en) | 2017-02-21 | 2017-02-21 | Reaming fishing integrated tool and its fishing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106869848A true CN106869848A (en) | 2017-06-20 |
Family
ID=59166724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710092643.7A Pending CN106869848A (en) | 2017-02-21 | 2017-02-21 | Reaming fishing integrated tool and its fishing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106869848A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113250639A (en) * | 2020-08-28 | 2021-08-13 | 中国海洋石油集团有限公司 | High-torsion-resistance back-off fishing pipe column and fishing method and application thereof |
| CN115030679A (en) * | 2021-03-04 | 2022-09-09 | 中国石油天然气集团有限公司 | Male cone for coiled tubing salvage slim-hole choke and use method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201100110Y (en) * | 2007-11-02 | 2008-08-13 | 辽河石油勘探局 | A driller milling wrecking male wimble |
| CN102767344A (en) * | 2012-07-17 | 2012-11-07 | 重庆望江工业有限公司 | Salvage die tap |
| CN203022674U (en) * | 2012-11-27 | 2013-06-26 | 贵州高峰石油机械股份有限公司 | Die tap for salvaging tripping drill pipe under shaft |
| CN103967439A (en) * | 2014-04-28 | 2014-08-06 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Continuous milling and salvage integrated tool and milling and salvage method thereof |
| US20150226009A1 (en) * | 2012-08-01 | 2015-08-13 | Halliburton Energy Services, Inc. | Near-Bit Borehole Opener Tool and Method of Reaming |
| CN205189803U (en) * | 2015-12-02 | 2016-04-27 | 天合石油集团汇丰石油装备股份有限公司 | Wash -over fishing tool |
| CN206636527U (en) * | 2017-02-21 | 2017-11-14 | 中国石油集团渤海钻探工程有限公司 | Reaming fishing integrated tool |
-
2017
- 2017-02-21 CN CN201710092643.7A patent/CN106869848A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201100110Y (en) * | 2007-11-02 | 2008-08-13 | 辽河石油勘探局 | A driller milling wrecking male wimble |
| CN102767344A (en) * | 2012-07-17 | 2012-11-07 | 重庆望江工业有限公司 | Salvage die tap |
| US20150226009A1 (en) * | 2012-08-01 | 2015-08-13 | Halliburton Energy Services, Inc. | Near-Bit Borehole Opener Tool and Method of Reaming |
| CN203022674U (en) * | 2012-11-27 | 2013-06-26 | 贵州高峰石油机械股份有限公司 | Die tap for salvaging tripping drill pipe under shaft |
| CN103967439A (en) * | 2014-04-28 | 2014-08-06 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Continuous milling and salvage integrated tool and milling and salvage method thereof |
| CN205189803U (en) * | 2015-12-02 | 2016-04-27 | 天合石油集团汇丰石油装备股份有限公司 | Wash -over fishing tool |
| CN206636527U (en) * | 2017-02-21 | 2017-11-14 | 中国石油集团渤海钻探工程有限公司 | Reaming fishing integrated tool |
Non-Patent Citations (2)
| Title |
|---|
| 张君: "复杂打捞技术在N3-4-2混井的应用分析", 《中国石油和化工标准与质量》 * |
| 王建富: "套铣筒母锥在腰英台油田YQ34-1HF井中的成功应用", 《化工管理》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113250639A (en) * | 2020-08-28 | 2021-08-13 | 中国海洋石油集团有限公司 | High-torsion-resistance back-off fishing pipe column and fishing method and application thereof |
| CN115030679A (en) * | 2021-03-04 | 2022-09-09 | 中国石油天然气集团有限公司 | Male cone for coiled tubing salvage slim-hole choke and use method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU751544B2 (en) | A drilling tool | |
| AU776634B2 (en) | Drilling bit for drilling while running casing | |
| US8887836B2 (en) | Drilling systems for cleaning wellbores, bits for wellbore cleaning, methods of forming such bits, and methods of cleaning wellbores using such bits | |
| WO2007147257A1 (en) | Stabilizer for drill strings | |
| US8622126B2 (en) | Reaming tool | |
| WO2010120567A2 (en) | Methods for forming boring shoes for wellbore casing, and boring shoes and intermediate structures formed by such methods | |
| CN106869848A (en) | Reaming fishing integrated tool and its fishing method | |
| US20030049081A1 (en) | Tandem tap and method for cutting screw threads | |
| CN206636527U (en) | Reaming fishing integrated tool | |
| CN106869849A (en) | Set milling fishing integrated tool and its fishing method | |
| CN107882525A (en) | A kind of rope salvaging type torsional pulse core drill | |
| CN206636528U (en) | Cover milling fishing integrated tool | |
| CN207673304U (en) | A kind of rope salvaging type torsional pulse core drill | |
| NO20121207A1 (en) | BORE KRONE | |
| US11560758B2 (en) | Drilling and milling tool | |
| CN203925381U (en) | Mill for cementing liner hanger central tube is grabbed one fisher | |
| CN205503071U (en) | Plush copper is guided long conical surface of son and is milled awl | |
| CN105672886A (en) | Reaming tool and methods of using the reaming tool in a wellbore | |
| CN210483536U (en) | Well wall repairing tool | |
| CN217129479U (en) | Packer grinding, milling and fishing integrated tool | |
| US11913284B2 (en) | Drilling and milling tool | |
| CN210685910U (en) | Formula that can move back mills and drags for integration instrument | |
| CN214273523U (en) | Drill bit of inner pipe advanced rope coring drill | |
| CN211422535U (en) | Polycrystalline diamond compact bit suitable for coiled tubing drilling | |
| EP4112869A1 (en) | Laser cladded shank adapter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170620 |