CN2564736Y - Tool for cutting and fishing pipe string of oil field downhole - Google Patents
Tool for cutting and fishing pipe string of oil field downhole Download PDFInfo
- Publication number
- CN2564736Y CN2564736Y CN 02208475 CN02208475U CN2564736Y CN 2564736 Y CN2564736 Y CN 2564736Y CN 02208475 CN02208475 CN 02208475 CN 02208475 U CN02208475 U CN 02208475U CN 2564736 Y CN2564736 Y CN 2564736Y
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- CN
- China
- Prior art keywords
- cutter
- cutting
- hole
- taper
- knife
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- Expired - Fee Related
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Abstract
The utility model relates to a tool for the cutting and the fishing of downhole pipe strings in an oil field, which comprises a fishing part and a cutting part. The utility model has the structure that the upper part of a drive shaft is provided with a joint; the upper part of a position which is adjacent to the joint is sheathed with a slip of which the lower end is provided with three anchor blocks which are obtained through division by an open slot; the outer circle of each anchor block is provided with jagged taper threads; the inner face of the slip is provided with taper holes which are corresponding to the taper face of a slip seat which is connected with a knife rod; keys which are corresponding to a slide track groove of the outer circle of the drive shaft are arranged on the knife rod; the lower part of the knife rod is connected with a knife pad of which the inner part is hinged with cutting knives; each cutting knife has a taper bottom face which is corresponding to a taper slide block arranged at the upper part of a knife bearer; the slips seat, the knife rod, and the knife bearer are all sheathed on the drive shaft of which the terminal end is in screw connection with a base cone; a spring is arranged between the base cone and the knife bearer in a sheathing manner. The utility model can carry out the downhole operation of cutting and fishing on pipe strings, slippage does not occur easily at cutting time, a special fishing tool is not additionally required at fishing time, and cutting and fishing are finished in one time. The utility model has the advantages of convenient construction, economy, reliability, and high work efficiency.
Description
Technical field
The utility model is a kind of by cutting and salvaging cutting fishing tool dimerous, is applied to the cutting and the fishing of oil and coal mine lower tubular column, belongs to mechanical engineering field.
Background technology
At present the imitative U.S. mechanical type internal cutter that uses at oilfield downhole operation is a kind ofly to control with friction block and cunning tooth sheet, the weak point that this technology exists is that sliding tooth film trap is very shallow, slippage makes cutting invalid easily, is the fishing tool that needs other configure dedicated when salvaging outside another deficiency.
Summary of the invention
The purpose of this utility model provides a kind of oil field down-hole string cutting fishing tool, it can carry out the cutting and the fishing of tubing string in the down-hole, it is not easy slippage when cutting, when salvaging, need not other configure dedicated fishing tool, cutting is once finished with salvaging, easy construction, economic and reliable, high efficiency.
The purpose of this utility model is achieved in that a kind of oil field down-hole string cutting fishing tool, comprise and salvage part and cutting part, a power transmission shaft, the joint in band taper thread hole is arranged at its top, and this joint connects the middle part cylindrical bar of disjunctor, and this cylindrical bar has the evagination conical ring on the top, by the next slide groove that is equipped with, this slide groove is by the keyway of five equilibrium, the saw-tooth grooves that shifts to install with keyway, and the annular groove of the indent between keyway and serrated slot is formed; This cylindrical bar bottom, middle part connects the thinner lower cylindrical bar of diameter of disjunctor, this lower cylindrical bar be equipped with two keyways by the next, its end has external screw thread; Salvage part and comprise slips and slip spider; Slips is the circle cover that there is the trisection break slot lower end, there is circular hole its upper end, the annular groove of placing steel ball is arranged in this circular hole, this annular groove connection one is the built-in screw plug of screw radially, this slips middle part is the fluting hollow sleeve, and there are three anchorage blocks its lower end, and the cylindrical of this anchorage block has the zigzag taper thread, this anchorage block bottom is by the inner ring surface of being made up of cylindrical hole and conical bore, and this conical bore is and draws shape opening; Described slip sleeve is loaded on the top of power transmission shaft middle part cylindrical bar, and its top circle hole sleeve is contained in the cylindrical of an elasticity spacing collar, and the cylindrical of this spacing collar has the annular groove of annular groove and slips corresponding, and the dress steel ball is formed rolling bearing in this annular groove; The cylindrical bar cylindrical is set with slip spider at the middle part of slips bottom, there is the up-small and down-big conical surface this slip spider upper end, the tubaeform taper hole of the tapering of this conical surface and slips is corresponding and can rise when power transmission shaft rotates and insert this taper hole, anchorage block is strutted the grappling of realization to the down-hole pipe, this slip spider lower end has the little rank circle cover of jack and knife bar to peg graft, form rolling bearing by dress steel ball in the annular groove between its fitting face, this annular groove has dress screw plug in the radial hole; Described cutting part is by knife bar, edge bearing and cutter, the cutter pillow is formed, knife bar is the round casing shape, its top has little rank circle cover to peg graft with slip spider, its middle part inner hole sleeve is loaded on the slide groove position of power transmission shaft, the cylindrical of this knife bar has dress key in the radial hole, this key aligns slide groove and can be at keyway, slide in groove and the annular groove, four groove shape edge bearings are arranged in the lower end of knife bar, respectively adorn cutter in it, this cutter upper articulation is rotatable in edge bearing, and this outwardly-bent part in cutter bottom has the taper bottom surface, is set with the cutter pillow on the power transmission shaft of this cutter bottom, the top of this cutter pillow has individual taper slide block to align the taper bottom surface of each cutter respectively and when up-slip cutter is opened, and its point of a knife cuts the down-hole pipe when power transmission shaft rotates; In the radial hole of described cutter napex key is housed, this power transmission shaft end base cone that is spirally connected is set with spring between this base cone and cutter pillow.
The utility model has following actively useful effect:
The oil field down-hole string cuts fishing tool by power transmission shaft, slips, and knife bar, cutter, the cutter pillow, compositions such as base cone comprise grappling, salvaging and cutting two parts, are controlled by the slide groove on the power transmission shaft and are achieved as follows function: 1, salvage; 2, salvage when invalid, rotating drive shaft cuts and salvages; When 3, the cutting salvaging is invalid, after power transmission shaft is once reciprocal, just can withdraw from instrument.
The scope of application of the present utility model is
The drilling rod of above all size, the sleeve pipe of each specification that 2 " oil pipe of above all size, 4 " are above, the sighting tube that colliery usefulness Φ 300 * 20 is thick etc.
Design the utility model can be the oil and gas wells in oil fields light maintenance, gets the cover overhaul new tool easy to use, economic and reliable is provided.
Description of drawings
Fig. 1 is the structural representation of the utility model one embodiment;
Fig. 2 is the structural representation of power transmission shaft among Fig. 1;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is the B-B sectional view of Fig. 2;
Fig. 5 is the plane outspread drawing of slide groove of corresponding A-A section cylindrical of Fig. 2;
Fig. 6 is the plane outspread drawing of keyway of the corresponding B-B section cylindrical of Fig. 2;
Fig. 7 is the structural representation of slips among Fig. 1, for facing full sectional view;
Fig. 8 is the C-C sectional view of Fig. 7;
Fig. 9 is the K portion partial enlarged drawing of Fig. 7.
The specific embodiment
Accompanying drawing number:
1. power transmission shaft 101. joints 102. middle part cylindrical bars 103. evagination conical rings
104. concave ring groove in keyway 105. saw-tooth grooves 106.
107. lower cylindrical bar 108. keyways 109. external screw threads
2. elasticity spacing collar 3. screw plugs 4. steel balls
5. slips 501. break slots 502. circular holes
503. annular groove 504. fluting hollow sleeves 505. anchorage blocks
506. zigzag screw thread 507. cylindrical holes 508. conical bores
6. slip spider 601. conical surfaces
7. knife bar 8. keys 9. edge bearings 10. pins
11. cutter 111. taper bottom surfaces
12. cutter is rested the head on 13. keys, 14. springs, 15. base cones
Please refer to Fig. 1, the utility model is a kind of oil field down-hole string cutting fishing tool, comprise and salvage part and cutting part, it is configured to: a power transmission shaft 1 is seen Fig. 2, the joint 101 in band taper thread hole is arranged at its top, this joint connects the middle part cylindrical bar 102 of disjunctor, this cylindrical bar has evagination conical ring 103 on the top, by the next slide groove that is equipped with, this slide groove is by the keyway 104 of five equilibrium, the saw-tooth grooves 105 that shifts to install with keyway 104, and the annular groove 106 of the indent between keyway 104 and serrated slot 105 is formed and is seen Fig. 3, Fig. 5; This cylindrical bar bottom, middle part connects the thinner lower cylindrical bar 107 of diameter of disjunctor, and the next pair keyways 108 that are equipped with that lean on of this lower cylindrical bar are seen Fig. 4, Fig. 6, and its end has external screw thread 109; Salvage part and comprise slips 5 and slip spider 6; Please refer to Fig. 7, Fig. 8, Fig. 9, slips 5 has the circle cover of trisection break slot 501 for the lower end, there is circular hole 502 its upper end, the annular groove 503 of placing steel ball is arranged in this circular hole, and this annular groove connection one is the built-in screw plug 3 of screw radially, and this slips middle part is fluting hollow sleeve 504, there are three anchorage blocks 505 its lower end, the cylindrical of this anchorage block has zigzag tapered thread 506, and this anchorage block bottom is by the inner ring surface of being made up of cylindrical hole 507 and conical bore 508, and this conical bore 508 is and draws shape opening; Described slips 5 is set in the top of power transmission shaft 1 middle part cylindrical bar 102, and its top circular hole 502 is sleeved on the cylindrical of an elasticity spacing collar 2, and the cylindrical of this spacing collar 2 has the annular groove 503 of annular groove and slips 5 corresponding, and dress steel ball 5 is formed rolling bearing in this annular groove; Middle part cylindrical bar 102 cylindricals in slips 5 bottoms are set with slip spider 6, there is the up-small and down-big conical surface 601 this slip spider upper end, the tubaeform taper hole 508 of the tapering of this conical surface and slips 5 is corresponding and can rise when power transmission shaft 1 rotates and insert this taper hole, anchorage block 505 is strutted the grappling of realization to the down-hole pipe, these slip spider 6 lower ends have the little rank circle cover of jack and knife bar 7 to peg graft, form rolling bearing by dress steel ball 16 in the annular groove between its fitting face, this annular groove has dress screw plug 17 in the radial hole; Described cutting part is by knife bar 7, edge bearing 9, cutter 11 and cutter pillow 12 are formed, knife bar 7 is the round casing shape, its top has little rank circle cover to peg graft with slip spider 6, its middle part inner hole sleeve is loaded on the slide groove position of power transmission shaft 1, the cylindrical of this knife bar 7 has dress key 8 in the radial hole, this key 8 aligns slide groove and can be at keyway 104, slide in groove 105 and the annular groove 106, four groove shape edge bearings 9 are arranged in the lower end of knife bar 7, respectively adorn cutter 11 in it, this cutter upper articulation is rotatable in edge bearing 9, this outwardly-bent part in cutter 11 bottoms has taper bottom surface 111, be set with cutter pillow 12 on the power transmission shaft of this cutter bottom, the top of this cutter pillow has 4 taper slide blocks to align the taper bottom surface 111 of each cutter 11 respectively and when up-slip cutter is opened, and its point of a knife cuts the down-hole pipe when power transmission shaft 1 rotates; Described cutter is rested the head in the radial hole of 12 bottoms key 13 is housed, and this power transmission shaft end base cone 15 that is spirally connected is set with spring 14 between this base cone 15 and cutter pillow 12.
Claims (1)
1. an oil field down-hole string cutting fishing tool comprises salvaging part and cutting part, and it is characterized in that: it is configured to:
A power transmission shaft (1), the joint (101) in band taper thread hole is arranged at its top, this joint connects the middle part cylindrical bar (102) of disjunctor, this cylindrical bar has evagination conical ring (103) on the top, by the next slide groove that is equipped with, this slide groove is by the keyway (104) of circumference in equal parts, the groove that the zigzag hypotenuse is arranged (105) that shifts to install with keyway (104), and the annular groove (106) of the indent between keyway (104) and serrated slot (105) is formed; This cylindrical bar bottom, middle part connects the thinner lower cylindrical bar (107) of diameter of disjunctor, this lower cylindrical bar be equipped with two keyways (108) by the next, its end has external screw thread (109);
Salvage part and comprise slips (5) and slip spider (6); Slips (5) has the circle cover of trisection break slot (501) for the lower end, there is circular hole (502) its upper end, the annular groove (503) of placing steel ball is arranged in this circular hole, this annular groove connection one is the built-in screw plug of screw (3) radially, this slips middle part is fluting hollow sleeve (504), and there are three anchorage blocks (505) its lower end, and the cylindrical of this anchorage block has zigzag taper thread (506), the inner ring surface of being made up of cylindrical hole (507) and conical bore (508) is arranged at this anchorage block bottom, and this conical bore (508) is and draws shape opening; Described slips (5) is set in the top of power transmission shaft (1) middle part cylindrical bar (102), its top circular hole (502) is sleeved on the cylindrical of an elasticity spacing collar (2), the cylindrical of this spacing collar (2) has the annular groove (503) of annular groove and slips (5) corresponding, and dress steel ball (5) is formed rolling bearing in this annular groove; Middle part cylindrical bar (102) cylindrical in slips (5) bottom is set with slip spider (6), there is the up-small and down-big conical surface (601) this slip spider upper end, the tubaeform taper hole (508) of the tapering of this conical surface and slips (5) is corresponding and can rise when power transmission shaft (1) rotates and insert this taper hole, anchorage block (505) is strutted the grappling of realization to the down-hole pipe, this slip spider (6) lower end has the little rank circle cover of jack and knife bar (7) to peg graft, dress steel ball (16) composition rolling bearing in the annular groove is arranged between its fitting face, and this annular groove has dress screw plug (17) in the radial hole;
Described cutting part is by knife bar (7), edge bearing (9), cutter (11) and cutter pillow (12) are formed, knife bar (7) is the round casing shape, its top has little rank circle cover to peg graft with slip spider (6), its middle part inner hole sleeve is loaded on the slide groove position of power transmission shaft (1), the cylindrical of this knife bar (7) has dress key (8) in the radial hole, this key (8) aligns slide groove and can be in keyway (104), slide in groove (105) and the annular groove (106), in the lower end of knife bar (7) four groove shape edge bearings (9) are arranged, respectively adorn cutter (11) in it, this cutter upper articulation is rotatable in edge bearing (9), the outwardly-bent part in this cutter (11) bottom has taper bottom surface (111), on the power transmission shaft of this cutter bottom, be set with cutter pillow (12), the top of this cutter pillow has 4 taper slide blocks to align the taper bottom surface (111) of each cutter (11) respectively and when up-slip cutter is opened, and its point of a knife cuts the down-hole pipe when power transmission shaft (1) rotates;
In the radial hole of described cutter pillow (12) bottom key (13) is housed, this power transmission shaft end base cone (15) that is spirally connected is rested the head between (12) with cutter at this base cone (15) and to be set with spring (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02208475 CN2564736Y (en) | 2002-03-26 | 2002-03-26 | Tool for cutting and fishing pipe string of oil field downhole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02208475 CN2564736Y (en) | 2002-03-26 | 2002-03-26 | Tool for cutting and fishing pipe string of oil field downhole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2564736Y true CN2564736Y (en) | 2003-08-06 |
Family
ID=33689144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02208475 Expired - Fee Related CN2564736Y (en) | 2002-03-26 | 2002-03-26 | Tool for cutting and fishing pipe string of oil field downhole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2564736Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103562488A (en) * | 2011-05-31 | 2014-02-05 | 韦尔泰克有限公司 | Downhole tubing cutter tool |
| CN104526733A (en) * | 2014-12-15 | 2015-04-22 | 黄成博 | Pipe cutter |
| CN104533332A (en) * | 2014-12-29 | 2015-04-22 | 中国石油化工股份有限公司 | Downhole string cutting and fishing integrated tool and construction method thereof |
| CN104963642A (en) * | 2015-07-15 | 2015-10-07 | 南京地龙非开挖工程技术有限公司 | Pipe cutter |
| CN105422035A (en) * | 2015-12-25 | 2016-03-23 | 贵州高峰石油机械股份有限公司 | Double-release sliding sleeve type bowl slip-socket and underground falling-object catching method |
| NO341538B1 (en) * | 2014-12-09 | 2017-12-04 | Qinterra Tech As | Cutting unit for internal cutting of pipes |
-
2002
- 2002-03-26 CN CN 02208475 patent/CN2564736Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103562488A (en) * | 2011-05-31 | 2014-02-05 | 韦尔泰克有限公司 | Downhole tubing cutter tool |
| CN103562488B (en) * | 2011-05-31 | 2016-08-17 | 韦尔泰克有限公司 | Down-hole pipe fitting cutting tool |
| US9441436B2 (en) | 2011-05-31 | 2016-09-13 | Welltec A/S | Downhole tubing cutter tool |
| NO341538B1 (en) * | 2014-12-09 | 2017-12-04 | Qinterra Tech As | Cutting unit for internal cutting of pipes |
| US10253586B2 (en) | 2014-12-09 | 2019-04-09 | Qinterra Technologies As | Cutting unit for internal cutting of tubing |
| CN104526733A (en) * | 2014-12-15 | 2015-04-22 | 黄成博 | Pipe cutter |
| CN104526733B (en) * | 2014-12-15 | 2016-07-20 | 黄成博 | A kind of casing knife |
| CN104533332A (en) * | 2014-12-29 | 2015-04-22 | 中国石油化工股份有限公司 | Downhole string cutting and fishing integrated tool and construction method thereof |
| CN104533332B (en) * | 2014-12-29 | 2017-02-22 | 中国石油化工股份有限公司 | Downhole string cutting and fishing integrated tool and construction method thereof |
| CN104963642A (en) * | 2015-07-15 | 2015-10-07 | 南京地龙非开挖工程技术有限公司 | Pipe cutter |
| CN104963642B (en) * | 2015-07-15 | 2018-03-02 | 南京地龙非开挖工程技术有限公司 | Pipe cutter |
| CN105422035A (en) * | 2015-12-25 | 2016-03-23 | 贵州高峰石油机械股份有限公司 | Double-release sliding sleeve type bowl slip-socket and underground falling-object catching method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |