CN107859498B - Combined type fishing device - Google Patents
Combined type fishing device Download PDFInfo
- Publication number
- CN107859498B CN107859498B CN201711167787.0A CN201711167787A CN107859498B CN 107859498 B CN107859498 B CN 107859498B CN 201711167787 A CN201711167787 A CN 201711167787A CN 107859498 B CN107859498 B CN 107859498B
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- China
- Prior art keywords
- nipple
- ring
- impact
- slip
- fixedly installed
- 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.)
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- 210000002445 nipple Anatomy 0.000 claims abstract description 113
- 230000003628 erosive effect Effects 0.000 claims abstract description 24
- 239000002131 composite material Substances 0.000 claims abstract description 14
- 239000000725 suspension Substances 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 31
- 238000000034 method Methods 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B31/18—Grappling tools, e.g. tongs or grabs gripping externally, e.g. overshot
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B31/107—Fishing for or freeing objects in boreholes or wells using impact means for releasing stuck parts, e.g. jars
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Marine Sciences & Fisheries (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of downhole tools, in particular to a composite salvaging device which comprises a lifting nipple, a connecting nipple, a hanging nipple, a positioning ball seat, an impact sliding sleeve, an erosion ring, an impact ring, slips and a guide head. The invention has reasonable structure and convenient use, the guide head is used for sleeving the drilling tool in the well into the tool, the slip is suspended to finish the fishing operation, and the ejector rod can be used for downwards breaking the erosion ring in a ball throwing pressure-holding manner, so that the drilling tool can be timely taken out to finish the fishing operation after the drilling tool is tightly held after the slip is hung on the descending seat of the slip, and the invention has the characteristics of high efficiency and safety.
Description
Technical Field
The invention relates to the technical field of downhole tools, in particular to a composite salvaging device.
Background
In petroleum drilling, partial wells are pre-exploratory wells and exploratory wells, the stratum physical property data are relatively less, geological design possibly has a certain access with reality, blocking is easy to occur in certain well sections, and after underground accidents such as blocking occur, residual drilling tools in the wells cannot be lifted out in time, so that the drilling tools are buried, and property loss is caused.
Disclosure of Invention
The invention provides a composite salvaging device, which overcomes the defects of the prior art, and can effectively solve the problem that drilling tools are buried because drilling tools cannot be lifted out in time after drilling tools are stuck in the traditional salvaging operation.
The technical scheme of the invention is realized by the following measures: the composite salvaging device is characterized by comprising a lifting nipple, a connecting nipple, a hanging nipple, a positioning ball seat, an impact sliding sleeve, an erosion ring, an impact ring, slips and a guide head, wherein the inner side of the lower end of the lifting nipple is fixedly arranged with the outer side of the upper end of the connecting nipple; an inner ring table is arranged on the inner side of the lower part of the connecting nipple, an impact sliding sleeve with the lower end being arranged on the inner ring table is sleeved in the connecting nipple, at least two circulation holes are circumferentially distributed on the impact sliding sleeve, a positioning sleeve with the upper end propping against the nipple boss and the lower end pressing against the impact sliding sleeve is sleeved in the connecting nipple, an erosion ring is fixedly arranged at the lower end of the impact sliding sleeve, an impact ring is arranged on the outer side of the erosion ring and fixedly arranged with the impact ring through a connecting pin, a gap is reserved between the outer side of the impact ring and the inner wall of the connecting nipple, at least one ejector rod which is positioned at the position above the corresponding impact ring is circumferentially distributed at the lower end of the positioning ball seat, and sliding sleeve holes which respectively correspond to the positions of each ejector rod and are sleeved on the outer side of the lower part of each ejector rod are arranged on the impact sliding sleeve; the inner side of the lower end of the connecting nipple is fixedly arranged with the outer side of the upper end of the hanging nipple, the inner cavity of the lower part of the hanging nipple is a frustum hole with a big upper part and a small lower part, at least two slips are distributed along the circumference in the middle of the inner side of the hanging nipple, slip bosses which are vertically distributed are arranged on the outer sides of the slips, slip positioning grooves are formed in the inner wall of the hanging nipple corresponding to the positions of each slip boss, the slip bosses are matched with the slip positioning grooves, and the slips are fixedly arranged in the hanging nipple through positioning shear nails; the lower end of the suspension nipple is fixedly installed with the guide head through screw thread installation.
The following are further optimizations and/or improvements to the above-described inventive solution:
the position of the inner side of the upper part of the short section boss corresponding to the short section shear pin can be provided with a limit groove in the vertical direction, the inner end of the short section shear pin is fixedly arranged on the outer side of the upper part of the positioning ball seat, and the outer end of the short section shear pin is positioned in the limit groove.
At least one O-shaped sealing ring can be arranged between the short joint boss corresponding to the position between the limit groove and the ejector rod and the positioning ball seat.
The outer side of the lower end of the positioning ball seat can be provided with a pressing ring positioned below the short section boss, the pressing ring and the positioning ball seat are fixedly installed together through threaded connection, the lower end of the pressing ring corresponding to each ejector rod position is provided with a pressing ring threaded hole, and the upper end of each ejector rod is fixedly installed in the pressing ring threaded hole.
The slip boss may be dovetail shaped with a narrow interior and a wide exterior.
The inside of the guide head can be in a horn mouth shape with a small upper part and a large lower part, the upper end of the guide head is provided with an annular groove, and the lower end of the suspension nipple is arranged on the annular groove.
The lifting nipple and the connecting nipple can be fixedly installed together through threaded connection, the connecting nipple and the hanging nipple are fixedly installed together through threaded connection, and the impact sliding sleeve and the erosion ring are fixedly installed together through threaded connection.
The invention has reasonable structure and convenient use, the guide head is used for sleeving the drilling tool in the well into the tool, the slip is suspended to finish the fishing operation, and the ejector rod can be used for downwards breaking the erosion ring in a ball throwing pressure-holding manner, so that the drilling tool can be timely taken out to finish the fishing operation after the drilling tool is tightly held after the slip is hung on the descending seat of the slip, and the invention has the characteristics of high efficiency and safety.
Drawings
Fig. 1 is a schematic view of a semi-sectional structure in front view of a preferred embodiment of the present invention.
FIG. 2 is an enlarged cross-sectional schematic view of the structure at A-A of FIG. 1.
The codes in the drawings are respectively: 1 is a lifting nipple, 2 is a connecting nipple, 3 is a hanging nipple, 4 is a positioning ball seat, 5 is an impact sliding sleeve, 6 is an erosion ring, 7 is an impact ring, 8 is a slip, 9 is a guide head, 10 is a nipple boss, 11 is a nipple shear pin, 12 is an inner ring table, 13 is a circulation hole, 14 is a positioning sleeve, 15 is a connecting pin, 16 is an ejector rod, 17 is a sliding sleeve hole, 18 is a frustum hole, 19 is a slip boss, 20 is a slip positioning groove, 21 is a positioning shear pin, 22 is a limiting groove, 23 is an O-shaped sealing ring, 24 is a compression ring, 25 is an annular groove, and 26 is a pressure-holding ball.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments can be determined according to the technical scheme and practical situations of the present invention.
In the present invention, for convenience of description, the description of the relative positional relationship of each component is described according to the layout manner of fig. 1 of the specification, for example: the positional relationship of the front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.
The invention is further described below with reference to examples and figures:
as shown in fig. 1 and 2, the composite fishing device comprises a lifting nipple 1, a connecting nipple 2, a hanging nipple 3, a positioning ball seat 4, an impact sliding sleeve 5, an erosion ring 6, an impact ring 7, slips 8 and a guide head 9, wherein the inner side of the lower end of the lifting nipple 1 is fixedly arranged with the outer side of the upper end of the connecting nipple 2, a nipple boss 10 is arranged on the inner side of the lower part of the lifting nipple 1, the positioning ball seat 4 with the lower part positioned in the connecting nipple 2 is sleeved on the inner side of the nipple boss 10, at least one nipple shear pin 11 is distributed on the lower part of the lifting nipple 1 along the circumference, and the upper part of the positioning ball seat 4 is limitedly arranged with the lifting nipple 1 through the nipple shear pins 11; an inner ring table 12 is arranged on the inner side of the lower part of the connecting nipple 2, an impact sliding sleeve 5 with the lower end being seated on the inner ring table 12 is sleeved in the connecting nipple 2, at least two circulation holes 13 are circumferentially distributed on the impact sliding sleeve 5, a positioning sleeve 14 with the upper end propping against the nipple boss 10 and the lower end pressing against the impact sliding sleeve 5 is sleeved in the connecting nipple 2, an erosion ring 6 is fixedly arranged at the lower end of the impact sliding sleeve 5, an impact ring 7 is arranged on the outer side of the erosion ring 6 and fixedly installed with the impact ring through a connecting pin 15, a gap is reserved between the outer side of the impact ring 7 and the inner wall of the connecting nipple 2, at least one ejector rod 16 which is positioned above the corresponding impact ring 7 is circumferentially distributed at the lower end of a positioning ball seat 4, and sliding sleeve holes 17 which respectively correspond to the positions of each ejector rod 16 and are sleeved on the outer side of the lower part of each ejector rod 16 are arranged on the impact sliding sleeve 5; the inner side of the lower end of the connecting nipple 2 is fixedly arranged with the outer side of the upper end of the hanging nipple 3, the inner cavity of the lower part of the hanging nipple 3 is a frustum hole 18 with a big upper part and a small lower part, at least two slips 8 are distributed along the circumference in the middle of the inner side of the hanging nipple 3, slip bosses 19 are vertically distributed on the outer side of the slips 8, slip positioning grooves 20 are formed in the inner wall of the hanging nipple 3 corresponding to the positions of each slip boss 19, the slip bosses 19 are matched with the slip positioning grooves 20, and the slips 8 are fixedly arranged in the hanging nipple 3 through positioning shear pins 21; the lower end of the suspension nipple 3 is fixedly installed with the guide head 9 through threaded installation. In the use process, when underground complex accidents such as underground drilling and the like occur, the invention is connected to a drilling tool, when the underground drilling tool approaches to the falling residual section, circulating mud cleans the nearby well wall, ensuring that the well bore is regular and smooth, and continuously lowering the invention after good circularity, gradually sleeving the underground drilling tool into the inner space of the invention by using the guide head 9, continuously lowering the invention after the drilling tool smoothly enters, contacting and impacting the erosion ring 6 by the underground drilling tool, wherein the erosion ring 6 adopts fragile materials such as ceramics and the like, so that the erosion ring 6 is broken due to the impact of the underground drilling tool, the impact ring 7 loses constraint force, the upper end face of the slip 8 is impacted downwards, the positioning shear pin 21 is sheared, the drilling tool is slowly lifted upwards, the slip 8 descends along the slip positioning groove 20, the slip 8 starts to gradually hold the drilling tool, at the moment, the suspension pointer is observed to be lifted, if the suspension pointer is lifted, the slip 8 is firmly held down, the lower part of the well bore hole can be cleaned, and the well bore hole is recovered after the suspension pointer is lifted, and the well bore hole operation is completed; if the suspended weight pointer does not change, the impact ring 7 does not lose the constraint force of the erosion ring 6 or the impact ring 7 does not smoothly move down, so that the slips 8 do not hold the drilling tool, the invention is continuously lowered at the moment, the circulation displacement is controlled, the hold-down ball 26 is thrown into the ball seat and then starts to hold down, the short-joint shear pin 11 is sheared off, the ejector rod 16 moves down along with the positioning ball seat 4, the circulation channel is opened after the positioning ball seat 4 moves down, the circulation hole 13 enables slurry to circulate in the invention, the ejector rod 16 moves down to impact the impact ring 7 to shear the connecting pin 15 or enable the impact ring 7 to move down continuously, the slips 8 are impacted and shear the positioning shear pin 21, the drilling tool is slowly lifted up, the slips 8 move down in the slip positioning groove 20, the slips 8 start to hold the drilling tool gradually, the weight table on the drilling table is observed in time, whether the suspended weight pointer moves up or not is observed, if the suspended weight pointer moves up, the slips 8 are enabled to hold the drilling tool down, the lower section of the slurry circulation can be cleaned, and after the well is restored, the drilling operation is carried out, and the salvaging operation is completed. The invention has reasonable structure and convenient use, the guide head 9 is used for sleeving the drilling tool in the well into the tool, the slips 8 are suspended to finish the salvaging operation, and the ejector rod 16 can be used for downwards breaking the erosion ring 6 in a ball throwing and pressure holding mode, so that the drilling tool can be timely taken out to finish the salvaging operation after the slips 8 are hung on the descending seat and then the drilling tool is held tightly, and the invention has the characteristics of high efficiency and safety.
The composite salvaging device can be further optimized or/and improved according to actual needs:
as shown in fig. 1 and 2, a limit groove 22 in the vertical direction is arranged at the inner side of the upper part of the nipple boss 10 corresponding to the position of the nipple shear pin 11, the inner end of the nipple shear pin 11 is fixedly arranged at the outer side of the upper part of the positioning ball seat 4, and the outer end of the nipple shear pin 11 is positioned in the limit groove 22. In the use process, the short-section shear pins 11 are arranged in the limiting grooves 22, so that the positioning ball seat 4 is suspended in the lifting short section 1, and after the pressure-holding ball 26 is thrown into the lifting short-section shear pins, the short-section shear pins 11 can be smoothly sheared, so that the positioning ball seat 4 descends.
As shown in fig. 1 and 2, at least one O-ring 23 is arranged between the nipple boss 10 and the positioning ball seat 4 corresponding to the position between the limit groove 22 and the ejector rod 16. In the use process, the tightness of the inside of the invention is ensured, and after the pressure-holding ball 26 is put into, the short-section shear pin 11 can be smoothly sheared.
As shown in fig. 1, a pressing ring 24 positioned below the nipple boss 10 is arranged on the outer side of the lower end of the positioning ball seat 4, the pressing ring 24 and the positioning ball seat 4 are fixedly installed together through threaded connection, pressing ring threaded holes are formed in the lower end of the pressing ring 24 corresponding to the position of each ejector rod 16, and the upper ends of the ejector rods 16 are fixedly installed in the pressing ring threaded holes. In the use process, through the ejector rod 16 in threaded connection with the compression ring 24, the ejector rod 16 can descend along with the positioning ball seat 4, so that the ejector rod 16 impacts the impact ring 7 to shear the connecting pin 15.
As shown in fig. 1 and 2, the slip bowl 19 is dovetail-shaped with a narrow interior and a wide exterior. In the use process, the slip boss 19 is designed into a dovetail shape, so that the slips 8 can be more stable when descending.
As shown in fig. 1 and 2, the inside of the guiding head 9 is in a horn mouth shape with a small upper part and a big lower part, the upper end of the guiding head 9 is provided with an annular groove 25, and the lower end of the suspension nipple 3 is seated on the annular groove 25. In the use process, the horn mouth shape with the small upper part and the large lower part is adopted to facilitate the drilling tool to smoothly enter the inner space of the invention.
As shown in fig. 1 and 2, the lifting nipple 1 and the connecting nipple 2 are fixedly installed together through threaded connection, the connecting nipple 2 and the hanging nipple 3 are fixedly installed together through threaded connection, and the impact sliding sleeve 5 and the erosion ring 6 are fixedly installed together through threaded connection. In the use, adopt threaded connection to make promote between nipple joint 1 and the nipple joint 2, connect nipple joint 2 and hang nipple joint 3, strike slip cover 5 and erosion ring 6 convenient dismantlement.
The technical characteristics form the optimal embodiment of the invention, have stronger adaptability and optimal implementation effect, and can increase or decrease unnecessary technical characteristics according to actual needs so as to meet the requirements of different situations.
Claims (9)
1. The utility model provides a combined type fishing device which characterized in that includes promotion nipple joint, connect nipple joint, hang nipple joint, location ball seat, strike slip cover, erosion ring, impact ring, slips and guide head, promotes nipple joint lower extreme inboard and connects nipple joint upper end outside fixed mounting together, promotes nipple joint lower part inboard and is equipped with the nipple joint boss, nipple joint boss inboard cover has the lower part to connect the inside location ball seat of nipple joint, promotes nipple joint lower part along circumference distribution has at least one nipple joint shear pin, location ball seat upper portion is in the same place with promotion nipple joint spacing installation through nipple joint shear pin; an inner ring table is arranged on the inner side of the lower part of the connecting nipple, an impact sliding sleeve with the lower end being arranged on the inner ring table is sleeved in the connecting nipple, at least two circulation holes are circumferentially distributed on the impact sliding sleeve, a positioning sleeve with the upper end propping against the nipple boss and the lower end pressing against the impact sliding sleeve is sleeved in the connecting nipple, an erosion ring is fixedly arranged at the lower end of the impact sliding sleeve, an impact ring is arranged on the outer side of the erosion ring and fixedly arranged with the impact ring through a connecting pin, a gap is reserved between the outer side of the impact ring and the inner wall of the connecting nipple, at least one ejector rod which is positioned at the position above the corresponding impact ring is circumferentially distributed at the lower end of the positioning ball seat, and sliding sleeve holes which respectively correspond to the positions of each ejector rod and are sleeved on the outer side of the lower part of each ejector rod are arranged on the impact sliding sleeve; the inner side of the lower end of the connecting nipple is fixedly arranged with the outer side of the upper end of the hanging nipple, the inner cavity of the lower part of the hanging nipple is a frustum hole with a big upper part and a small lower part, at least two slips are distributed along the circumference in the middle of the inner side of the hanging nipple, slip bosses which are vertically distributed are arranged on the outer sides of the slips, slip positioning grooves are formed in the inner wall of the hanging nipple corresponding to the positions of each slip boss, the slip bosses are matched with the slip positioning grooves, and the slips are fixedly arranged in the hanging nipple through positioning shear nails; the lower end of the suspension nipple is fixedly arranged with the guide head through threads.
2. A composite fishing device according to claim 1, wherein: and a limit groove in the vertical direction is formed in the upper inner side of the nipple boss, which corresponds to the position of the nipple shear pin, the inner end of the nipple shear pin is fixedly arranged on the outer side of the upper part of the positioning ball seat, and the outer end of the nipple shear pin is positioned in the limit groove.
3. A composite fishing device according to claim 2, wherein: at least one O-shaped sealing ring is arranged between the short joint boss corresponding to the position between the limit groove and the ejector rod and the positioning ball seat.
4. A composite fishing device according to claim 1, 2 or 3, wherein: the outside of the lower end of the positioning ball seat is provided with a pressing ring positioned below the short section boss, the pressing ring and the positioning ball seat are fixedly installed together through threaded connection, the lower end of the pressing ring corresponding to each ejector rod position is provided with a pressing ring threaded hole, and the upper end of each ejector rod is fixedly installed in the pressing ring threaded hole.
5. A composite fishing device according to claim 1, 2 or 3, wherein: the slip boss is in a dovetail shape with a narrow inner part and a wide outer part; or/and the inside of the guide head is in a horn mouth shape with a small upper part and a big lower part, the upper end of the guide head is provided with an annular groove, and the lower end of the suspension nipple is arranged on the annular groove.
6. A composite fishing device according to claim 4, wherein: the slip boss is in a dovetail shape with a narrow inner part and a wide outer part; or/and the inside of the guide head is in a horn mouth shape with a small upper part and a big lower part, the upper end of the guide head is provided with an annular groove, and the lower end of the suspension nipple is arranged on the annular groove.
7. A composite fishing device according to claim 1 or 2 or 3 or 6, wherein: the lifting nipple is fixedly installed together with the connecting nipple through threaded connection, the connecting nipple is fixedly installed together with the hanging nipple through threaded connection, and the impact sliding sleeve is fixedly installed together with the erosion ring through threaded connection.
8. A composite fishing device according to claim 4, wherein: the lifting nipple is fixedly installed together with the connecting nipple through threaded connection, the connecting nipple is fixedly installed together with the hanging nipple through threaded connection, and the impact sliding sleeve is fixedly installed together with the erosion ring through threaded connection.
9. A composite fishing device according to claim 5, wherein: the lifting nipple is fixedly installed together with the connecting nipple through threaded connection, the connecting nipple is fixedly installed together with the hanging nipple through threaded connection, and the impact sliding sleeve is fixedly installed together with the erosion ring through threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711167787.0A CN107859498B (en) | 2017-11-21 | 2017-11-21 | Combined type fishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711167787.0A CN107859498B (en) | 2017-11-21 | 2017-11-21 | Combined type fishing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107859498A CN107859498A (en) | 2018-03-30 |
| CN107859498B true CN107859498B (en) | 2023-07-07 |
Family
ID=61702307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711167787.0A Active CN107859498B (en) | 2017-11-21 | 2017-11-21 | Combined type fishing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107859498B (en) |
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| CN106285542A (en) * | 2015-06-24 | 2017-01-04 | 辽宁有色基础工程公司 | A kind of trouble of lost tool in hole fisher |
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| GB246858A (en) * | 1925-01-28 | 1926-04-29 | Bridgeport Machine Company | Improvements in and relating to grapples |
| GB340292A (en) * | 1929-07-08 | 1931-01-08 | Doheny Stone Drill Co | Improvements in or relating to fishing tools for use in well drilling operations |
| GB355577A (en) * | 1930-10-21 | 1931-08-27 | Acme Fishing Tool Co | Improvements in or relating to fishing spears used in well drilling |
| SU735743A1 (en) * | 1977-10-27 | 1980-05-25 | Всесоюзный Нефтегазовый Научно- Исследовательский Институт | Contact-type fishing device |
| US5265927A (en) * | 1992-03-23 | 1993-11-30 | Davidson Jr David R | Downhole fishing tool |
| CN2923986Y (en) * | 2006-06-14 | 2007-07-18 | 中国石油天然气股份有限公司 | Self-sliding type underground fishing tool |
| CN201851058U (en) * | 2010-11-06 | 2011-06-01 | 张新勇 | Combined slip socket |
| CN202914009U (en) * | 2012-09-29 | 2013-05-01 | 贵州航天凯山石油仪器有限公司 | Salvage device for achieving state switching underground |
| CN202914027U (en) * | 2012-11-26 | 2013-05-01 | 中国石油集团长城钻探工程有限公司 | Salvage type drilling-free plug hydraulic grading cementing device and special spear thereof |
| CN204312005U (en) * | 2014-10-31 | 2015-05-06 | 中国石油化工集团公司 | A kind of cement retainer fisher |
| CN204532202U (en) * | 2015-02-27 | 2015-08-05 | 中国石油天然气股份有限公司 | Fuzzy fisher for rod falling objects |
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| CN205990895U (en) * | 2016-08-31 | 2017-03-01 | 中国石油集团川庆钻探工程有限公司 | Hydraulic composite fish fishing tool |
| CN106321005B (en) * | 2016-10-28 | 2019-06-07 | 中国石油化工股份有限公司 | Tubular pump fixing valve ball fishing socket and its application method |
| CN206205846U (en) * | 2016-11-24 | 2017-05-31 | 中国石油集团西部钻探工程有限公司 | The anti-lost fisher that can be recycled |
| CN207905754U (en) * | 2017-11-21 | 2018-09-25 | 中国石油集团西部钻探工程有限公司 | Combined type fishing device |
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- 2017-11-21 CN CN201711167787.0A patent/CN107859498B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285542A (en) * | 2015-06-24 | 2017-01-04 | 辽宁有色基础工程公司 | A kind of trouble of lost tool in hole fisher |
| CN204877352U (en) * | 2015-07-06 | 2015-12-16 | 辽河石油勘探局 | Cover mills fishing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107859498A (en) | 2018-03-30 |
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