CN103277050B - Recoverable whipstock and combined fishing tool thereof - Google Patents
Recoverable whipstock and combined fishing tool thereof Download PDFInfo
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- CN103277050B CN103277050B CN201310219849.3A CN201310219849A CN103277050B CN 103277050 B CN103277050 B CN 103277050B CN 201310219849 A CN201310219849 A CN 201310219849A CN 103277050 B CN103277050 B CN 103277050B
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- 238000005553 drilling Methods 0.000 claims description 51
- 241001449342 Chlorocrambe hastata Species 0.000 claims description 42
- 239000002184 metal Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 13
- 238000003466 welding Methods 0.000 claims description 6
- 201000004569 Blindness Diseases 0.000 abstract description 4
- 238000004873 anchoring Methods 0.000 abstract 4
- 210000000078 claw Anatomy 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 230000008021 deposition Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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Abstract
The invention discloses a recoverable whipstock and a combined fishing tool thereof, which comprise a main body and an anchoring seat for providing axial and circumferential anchoring force, wherein one end of the main body is fixedly connected with the anchoring seat, the other end of the main body is provided with a guide inclined plane, a central inner hole is arranged through the main body and the anchoring seat, and a fishing structure matched with the fishing tool is arranged in the central inner hole on the main body. The invention can effectively remove the blockage in the whipstock; the centralizing joint is automatically centered, so that the drilling-through spear and the fishing spear are accurately aligned, the blindness is low, and the operability is strong; the spear claws of the fishing spear are matched with the whipstock to finish fishing, the operation cycle is short, and the success rate is high.
Description
Technical field
The present invention relates to Multilateral Wells power tool, particularly a kind of Recoverable slant machine and combination fishing tool thereof, belong to downhole tool class.
Background technology
In branch hole drilling, the salvaging of Recoverable slant machine is key one ring in operation.At present, conventional fishing tool has recovery hook and casing section mill two kinds.Such as, China Patent No. " CN200510135261.5 " discloses a kind of Recoverable whipstock and fishing tool thereof, publication date is on 06 28th, 2006, Recoverable whipstock, comprise main body, described main body comprises body and lower body, both are fixedly connected with, the sheathed fishing cup in junction of upper body and lower body, the rim of a cup of fishing cup is towards upper body, the salvaging groove described upper body having the coupling part be connected with drilling rod and is located between coupling part and fishing cup, described lower body has a guiding surface, the top of guiding surface is provided with a flexible member, the below of described guiding surface is provided with the feather key of location, direction.The fishing tool of this whipstock comprises fishing rod and recovery hook, and recovery hook tilts to be fixedly connected on fishing rod, and the top of fishing rod is a link be flexibly connected with drilling rod, and this link being also provided with nozzle increases rate of flow of fluid.
But there are the following problems for existing Recoverable slant machine: when one, recovery hook is salvaged, need to determine to salvage orientation, and need make repeated attempts, and salvage groove once distortion or blocking, recovery hook just cannot hook whipstock, causes salvaging unsuccessfully.Two, when casing section mill is salvaged, milling workload is large, time-consuming longer, and easily damages sleeve pipe, and operating risk is high.
Summary of the invention
The object of the invention is to the problems referred to above overcoming existing Recoverable whipstock and fishing tool existence thereof, a kind of Recoverable slant machine and combination fishing tool thereof are provided.The present invention effectively can remove the obstruction in whipstock; The automatic centering of righting joint, guarantees to drill through lance and fishing spear is accurately aimed at, and blindness is low, workable; Measure without the need to lower orientation device and salvage orientation, operating cost is low; Fishing spear lance pawl and whipstock have coordinated salvaging, and duty cycle is short, and success rate is high.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of Recoverable slant machine, comprise main body, it is characterized in that: also comprise the anchor block that axial and circumferential anchorage force is provided, described main body one end is fixedly connected with anchor block, the other end arranges guiding incline, and through main body and anchor block are provided with central bore, in the central bore in main body, be provided with the salvaging structure coordinated with fishing tool.
Central bore in described main body comprises epimere endoporus, stage casing endoporus and hypomere endoporus, epimere endoporus is identical with hypomere bore inner diameter, stage casing bore inner diameter is less than epimere endoporus, stage casing endoporus respectively with epimere endoporus and hypomere endoporus forming station stage structure, salvaging structure is ledge structure.
A kind of combination fishing tool of Recoverable slant machine, it is characterized in that: comprise and drill through lance and fishing spear, described drill through lance comprise drill through joint and can through main center's endoporus drill through shaft, the described joint that drills through is provided with through hole with drilling through in shaft, the through hole drilling through joint and the through hole drilling through shaft are interconnected, drill through shaft and drill through joint and be fixedly connected with, lower end is fixedly installed hard-metal insert, and lower end is also provided with and the clean-out opening drilling through shaft through hole and be communicated with; Described fishing spear comprises fishing joint, salvages shaft, lance pawl and spearhead, salvage shaft upper end to be fixedly connected with fishing joint, salvage shaft lower end to be fixedly connected with spearhead, lance pawl is set on spearhead, lance pawl lower end is provided with bailer grab, lance pawl is connected with the spring that lance pawl is resetted, and the salvaging respective outer side edges of lance pawl, spearhead and whipstock is salvaged.
The described tab through-hole upper end that drills through is provided with internal thread, lower end with drill through shaft and be threaded, and drill through tab through-hole lower end and be provided with step, drill through shaft upper end correspondence and be provided with step and sealing ring, the step drilling through tab through-hole coordinates spacing with the step drilling through shaft and seals, and connection of thread welding.
The described shaft lower end that drills through is cone, and cone is evenly distributed with intake chute, and clean-out opening is arranged on bottom intake chute, and the even welding-on of multiple hard-metal insert is in cone.
The described external diameter drilling through joint is greater than the external diameter of the main body of whipstock, and the external diameter of described fishing joint is greater than the external diameter of the main body of whipstock.
The described length drilling through shaft is greater than the length of the central bore of through whipstock main body and anchor block setting, and the external diameter drilling through shaft is less than the internal diameter of the stage casing endoporus of whipstock main body.
Described spearhead comprises direct tube section, upper cone section and lower cone section, and spring one end is connected with lance pawl, and the other end is connected with salvaging shaft, and multiple bailer grab forms bailer grab mechanism; When bailer grab is arranged in the epimere endoporus of whipstock main body, bailer grab is fitted in upper cone section, and the external diameter of bailer grab mechanism is greater than the internal diameter of the stage casing endoporus of whipstock main body; When lance pawl move upward make bailer grab be arranged in the stage casing endoporus of whipstock main body time, bailer grab departs from upper cone section and be positioned at direct tube section, and spring is compressive state, and the external diameter of bailer grab mechanism is less than the internal diameter of the stage casing endoporus of whipstock main body; When lance pawl is arranged in the hypomere endoporus of whipstock main body, bailer grab resets and is fitted in upper cone section, and the external diameter of bailer grab mechanism is greater than the internal diameter of the stage casing endoporus of whipstock main body.
Be provided with through hole in described fishing joint, salvaging shaft and spearhead, fishing joint through hole, fishing spear rod through-hole are communicated with successively with spearhead through hole.
The through hole upper end of described fishing joint is provided with internal thread, lower end is connected with salvaging shaft threaded upper ends, and fishing joint through hole lower end is provided with step, salvage shaft upper end correspondence and be provided with step and sealing ring, the step of fishing joint through hole coordinates spacing with the step salvaging shaft and seals, and connection of thread welding.
The lower cone section of described spearhead is evenly distributed with intake chute, is provided with clean-out opening bottom intake chute, clean-out opening is communicated with spearhead through hole.
Employing the invention has the advantages that:
One, the Recoverable slant machine in the present invention, comprise anchor block, for whipstock provides axial and circumferential anchorage force, stressed evenly, remove grappling more reliable, described main body one end is fixedly connected with anchor block, the other end arranges guiding incline, and through main body is provided with central bore, is provided with the salvaging structure coordinated with fishing tool in the central bore in main body, adopts this structure, after the salvaged instrument of whipstock is firmly grasped, the continuous upper lifting pipe post in ground, anchor block removes grappling, a whole set of whipstock can be recycled to ground.
Two, the Recoverable slant machine in the present invention, central bore in its main body comprises epimere endoporus, stage casing endoporus and hypomere endoporus, epimere endoporus is identical with hypomere bore inner diameter, stage casing bore inner diameter is less than epimere endoporus, stage casing endoporus respectively with epimere endoporus and hypomere endoporus forming station stage structure, salvaging structure is ledge structure, adopts this structure to coordinate with fishing tool closely, and instrument reclaims more reliable.
Three, the fishing tool in the present invention, drill through lance and effectively can remove obstruction in whipstock central bore, the automatic centering of righting joint, guarantee to drill through lance and the accurate centring endoporus of fishing spear, blindness is low, workable; Fishing spear lance pawl and ledge structure have coordinated salvaging, and duty cycle is short, and success rate is high.
Four, in fishing tool of the present invention, the described tab through-hole upper end that drills through is provided with internal thread, lower end with drill through shaft and be threaded, this anatomical connectivity is adopted to dismantle more convenient, also independent replacing is easy to during parts damages, and drill through tab through-hole lower end and be provided with step, drill through shaft upper end correspondence and be provided with step and sealing ring, the step drilling through tab through-hole coordinates spacing with the step drilling through shaft and seals, and connection of thread welding, adopt this structure to make to drill through joint and drill through shaft and be connected more reliable.
Five, in fishing tool of the present invention, the described shaft lower end that drills through is cone, cone is evenly distributed with intake chute, clean-out opening is arranged on bottom intake chute, hard-metal insert welding-on, in cone, adopts cone structure to be convenient to guiding centering, by intake chute and clean-out opening structure, drilling cuttings deposition in cleaning center hole is more thorough, and hard-metal insert is convenient to bore the drilling cuttings deposition except in centre bore.
Six, in fishing tool of the present invention, described in drill through joint and fishing joint external diameter comparatively large, have centering effect, can make to drill through lance, central bore that the shaft of fishing spear accurately enters whipstock, carry out cleaning and fishing, operation blindness is low.
Seven, in fishing tool of the present invention, the described length drilling through shaft is greater than the length of the central bore of through whipstock main body and anchor block setting, the external diameter drilling through shaft is less than the internal diameter of the stage casing endoporus of whipstock main body, adopt this structure ensure that to drill through shaft and pass through from central bore, and whole central bore can be cleaned.
Eight, in fishing tool of the present invention, described spearhead comprises direct tube section, upper cone section and lower cone section, and spring one end is connected with lance pawl, and the other end is connected with salvaging shaft; Multiple bailer grab forms bailer grab mechanism; When bailer grab is arranged in the epimere endoporus of whipstock main body, bailer grab is fitted in upper cone section, and the external diameter of bailer grab mechanism is greater than the internal diameter of the stage casing endoporus of whipstock main body; When lance pawl move upward make bailer grab be arranged in the stage casing endoporus of whipstock main body time, bailer grab is positioned at direct tube section, and spring is compressive state, and the external diameter of bailer grab mechanism is less than the internal diameter of the stage casing endoporus of whipstock main body; When lance pawl is arranged in the hypomere endoporus of whipstock main body, bailer grab resets and is fitted in upper cone section, the external diameter of bailer grab mechanism is greater than the internal diameter of the stage casing endoporus of whipstock main body, adopt this structure, when salvaging, fishing spear is firmly grasped and is pinned whipstock, and suspending weight increases obviously, accurately can judge whether fishing spear is firmly grasped and pin whipstock.
Nine, in fishing tool of the present invention, through hole is provided with in described fishing joint, salvaging shaft and spearhead, fishing joint through hole, fishing spear rod through-hole are communicated with successively with spearhead through hole, adopt this structure can clean when salvaging simultaneously, ensure that fishing carries out smoothly.
Ten, in fishing tool of the present invention, the lower cone section of described spearhead is evenly distributed with intake chute, clean-out opening is provided with bottom intake chute, clean-out opening is communicated with spearhead through hole, cone structure is adopted to be convenient to guiding centering, by intake chute and clean-out opening structure, can drilling cuttings deposition more up hill and dale in cleaning center hole when fishing.
Accompanying drawing explanation
Fig. 1 is Recoverable slant machine structural representation of the present invention
Fig. 2 is that the present invention drills through lance structural representation
Fig. 3 is fishing spear structural representation of the present invention
Be labeled as in figure: 1, main body; 2, anchor block; 3, joint is drilled through; 4, sealing ring; 5, shaft is drilled through; 6, hard-metal insert; 7, fishing joint; 8, clean-out opening; 9, shaft is salvaged; 10, holding screw; 11, spring; 12, lance pawl; 13, spearhead.
Detailed description of the invention
Embodiment 1
A kind of Recoverable slant machine, comprise main body 1, also comprise the anchor block 2 that axial and circumferential anchorage force is provided, described main body 1 one end is fixedly connected with anchor block 2, the other end arranges guiding incline, and through main body 1 and anchor block 2 are provided with central bore, in the central bore in main body 1, be provided with the salvaging structure coordinated with fishing tool.
In the present invention, central bore in described main body 1 comprises epimere endoporus, stage casing endoporus and hypomere endoporus, epimere endoporus is identical with hypomere bore inner diameter, stage casing bore inner diameter is less than epimere endoporus, stage casing endoporus respectively with epimere endoporus and hypomere endoporus forming station stage structure, salvaging structure is ledge structure.
A combination fishing tool for Recoverable slant machine, comprises and drills through lance and fishing spear, and drill through lance for cleaning the drilling cuttings in the central bore of whipstock, fishing spear is for salvaging whipstock.
The described lance that drills through comprises and drills through joint 3 and can drill through shaft 5 through the central bore of whipstock main body, the described joint 3 that drills through is provided with through hole with drilling through in shaft 5, the through hole drilling through joint 3 and the through hole drilling through shaft 5 are interconnected, drill through shaft 5 upper end and drill through joint 3 and be fixedly connected with, lower end is fixedly installed hard-metal insert 6, hard-metal insert is hard-metal insert of the prior art, and lower end is also provided with the clean-out opening 8 be communicated with the through hole drilling through shaft 5; Described fishing spear comprises fishing joint 7, salvages shaft 9, lance pawl 12 and spearhead 13, salvage shaft 9 upper end to be fixedly connected with fishing joint 7, salvage shaft 9 lower end to be fixedly connected with spearhead 13, lance pawl 12 is set on spearhead 13, lance pawl 12 lower end is provided with bailer grab, lance pawl 12 is connected with the spring 11 that lance pawl is resetted, and the salvaging respective outer side edges of lance pawl 12, spearhead 13 and whipstock is salvaged.
In the present invention, the described joint 3 through hole upper end that drills through is provided with internal thread, lower end with drill through shaft 5 and be threaded, and drill through joint 3 through hole lower end and be provided with step, drill through shaft 5 upper end correspondence and be provided with step and sealing ring 4, the step drilling through joint 3 through hole after being threaded coordinates spacing with the step drilling through shaft 5 and seals, and connection of thread welding.
In the present invention, described in drill through shaft 5 lower end be cone, cone is evenly distributed with intake chute, and clean-out opening 8 is arranged on bottom intake chute, and hard-metal insert 6 welding-on is in cone.
In the present invention, described in drill through joint 3 external diameter be greater than the external diameter of the main body 1 of whipstock.The external diameter of described fishing joint 7 is greater than the external diameter of the main body 1 of whipstock.
In the present invention, described in drill through shaft 5 length be greater than the length of the central bore that through whipstock main body and anchor block are arranged, the external diameter drilling through shaft 5 is less than the internal diameter of the stage casing endoporus of whipstock main body.
In the present invention, described spearhead 13 comprises direct tube section, upper cone section and lower cone section, and spring 11 one end is connected with lance pawl 12, and the other end is connected with salvaging shaft 9, and multiple bailer grab forms bailer grab mechanism; When bailer grab is arranged in the epimere endoporus of whipstock main body, bailer grab is fitted in upper cone section, and the external diameter of bailer grab mechanism is greater than the internal diameter of the stage casing endoporus of whipstock main body; When lance pawl move upward make bailer grab be arranged in the stage casing endoporus of whipstock main body time, bailer grab is positioned at direct tube section, and spring is compressive state, and the external diameter of bailer grab mechanism is less than the internal diameter of the stage casing endoporus of whipstock main body; When lance pawl is arranged in the hypomere endoporus of whipstock main body, bailer grab resets and is fitted in upper cone section, and the external diameter of bailer grab mechanism is greater than the internal diameter of the stage casing endoporus of whipstock main body.
In the present invention, be provided with through hole in described fishing joint 7, salvaging shaft 9 and spearhead 13, fishing joint through hole 7, salvaging shaft 9 through hole are communicated with successively with spearhead 13 through hole.
In the present invention, the through hole upper end of described fishing joint 7 is provided with internal thread, lower end is threaded with salvaging shaft 9 upper end, and the through hole lower end of fishing joint 7 is provided with step, salvage shaft 9 upper end correspondence and be provided with step and sealing ring 4, after being threaded, the step of fishing joint through hole coordinates spacing with the step salvaging shaft and seals, and connection of thread welding.
In the present invention, the lower cone section of described spearhead 13 is evenly distributed with intake chute, is provided with clean-out opening 8 bottom intake chute, clean-out opening 8 is communicated with the through hole of spearhead.
Embodiment 2
The present embodiment is described in further detail as follows to the present invention:
In the present invention, the main body that whipstock is provided with guiding incline is hollow-core construction, and central bore is provided with salvaging step, and combination fishing tool enters central bore, after central bore cleaning, catches whipstock, complete the recovery of a whole set of whipstock by bailer grab.
Recoverable slant machine is made up of main body 1 and anchor block 2, and main body 1 is hollow-core construction, is provided with the salvaging step coordinated with fishing tool in central bore; Anchor block 2 provides axial and circumferential anchorage force for whipstock; After the salvaged instrument of main body 1 is firmly grasped, the continuous upper lifting pipe post in ground, anchor block 2 removes grappling, a whole set of whipstock can be recycled to ground.
Fishing tool drill through lance by drilling through joint 3, " O " shape sealing ring 4, drill through shaft 5, hard-metal insert 6 forms, and drills through joint 3 upper end processing criterion drilling rod internal thread, lower end processing regular screw threads; Drill through joint 3 external diameter comparatively large, centering effect can be played; Drill through joint 3 and drill through shaft 5 and to be connected by regular screw threads and to weld at step; The sealing surface drilling through shaft 5 external screw thread top with drill through joint 3 endoporus step surface and coordinate, sealed by " O " shape sealing ring 4; Drilling through joint 3, drilling through in shaft 5 is through hole; Drilling through shaft 5 lower end is cone, and cone is evenly distributed with intake chute, is processed with and the hole drilling through shaft 5 endoporus and communicate bottom intake chute; In cone, welding-on has hard-metal insert 6.
The fishing spear of fishing tool is made up of fishing joint 7, " O " shape sealing ring 4, salvaging shaft 9, holding screw 10, cylindrical spring 11, lance pawl 12, spearhead 13 etc., fishing joint 7 upper end processing criterion drilling rod internal thread, lower end processing regular screw threads; Fishing joint 7 and salvaging shaft 9 are connected by regular screw threads and weld at step; The sealing surface salvaging shaft 9 external screw thread top coordinates with fishing joint 7 endoporus step surface, is sealed by " O " shape sealing ring; Lance pawl 12 is equipped with in spearhead 13 outside; Spring 11 is installed between lance pawl 12 and spearhead 13; Spearhead 13 upper end is connected by regular screw threads with salvaging shaft 9, and is fixed by holding screw 10; Be through hole in fishing joint 7, salvaging shaft 9, spearhead 13; Spearhead 13 lower end is the cone of Double-conical-surface, and the lower conical surface is evenly distributed with intake chute, is processed with the hole communicated with endoporus bottom intake chute; Lance pawl 12 lower end is provided with 3 ~ 6 bailer grabs, and bailer grab is fitted with the spearhead 13 cone conical surface under the effect of spring 11 elastic force.
Operating principle of the present invention is as follows:
The central bore cleaning of main body: be connected to direction deflecting device fishing pipe string bottom by drilling through lance, down to, 1 ~ 2 meter, whipstock guiding incline upper end, turn on pump, rotates tubing string and slowly transfers, drilling fluid, by drilling through lance inner via hole from drilling through the ejection of shaft 5 lower end, rinses guiding incline.Under the centering effect drilling through joint 3, drill through shaft 5 and be in wellbore centre, just to the central bore of main body 1, now the slow-speed of revolution rotation of drilling tool limit is being transferred on limit, bores except the drilling cuttings deposition in cleaning center endoporus.When drilling through joint 3 and withstanding guiding incline upper end downwards (ground by suspending weight decline suddenly judgement), prove that central bore all completes cleaning, lance will be drilled through and propose central bore.Repeat above-mentioned cleaning process 2-3 time, guarantee central bore noresidue drilling cuttings.
Direction deflecting device fishing: fishing spear is connected to direction deflecting device fishing pipe string bottom, down to, 1 ~ 2 meter, whipstock guiding incline upper end, turn on pump, rotates tubing string and slowly transfers.Lance pawl 12 down to central bore top bar place time, because lance pawl 12 external diameter is greater than main body 1 central bore step place diameter, lance pawl 12 by step block not by.When continuing to transfer tubing string, salvage shaft 9 times pressing springs 11, until lower end chokes lance pawl 12 upper surface, after lance pawl 12 load-bearing, pressurized inwardly shrinks, and external diameter diminishes, just by main body 1 central bore step.After step, central bore diameter becomes large, and lance pawl 12 recoils to previous status again.Now, upper lifting pipe post, lance pawl 12 is blocked by central bore step can not be up, and salvage shaft 9 can be freely up, and drive spearhead 13 up, when spearhead 13 goes upward to that in its cone, the conical surface withstands lance pawl 12, upper lifting force to be delivered under central bore step on the conical surface by lance pawl 12, fishing spear has been firmly grasped and has been pinned whipstock, and now suspending weight obviously increases, and continuation is carried and just whipstock can be recycled to ground.
The above embodiment of the present invention, is only used to the citing clearly illustrating that the present invention does, and is not the restriction to embodiments of the present invention.
Claims (8)
1. a combination fishing tool for Recoverable slant machine, is characterized in that:
Recoverable slant machine comprises main body (1), also comprise the anchor block (2) that axial and circumferential anchorage force is provided, described main body (1) one end is fixedly connected with anchor block (2), the other end arranges guiding incline, and through main body (1) and anchor block (2) are provided with central bore, are provided with the salvaging structure coordinated with fishing tool in the central bore in main body (1);
Combination fishing tool comprises and drills through lance and fishing spear, described drill through lance comprise drill through joint (3) and can through main center's endoporus drill through shaft (5), described drill through joint (3) and drill through in shaft (5) be provided with through hole, the through hole drilling through joint (3) and the through hole drilling through shaft (5) are interconnected, drill through shaft (5) upper end and drill through joint (3) and be fixedly connected with, lower end is fixedly installed hard-metal insert (6), and lower end is also provided with and the clean-out opening (8) drilling through shaft through hole and be communicated with; Described fishing spear comprises fishing joint (7), salvages shaft (9), lance pawl (12) and spearhead (13), salvage shaft (9) upper end to be fixedly connected with fishing joint (7), salvage shaft (9) lower end to be fixedly connected with spearhead (13), lance pawl (12) is set on spearhead (13), lance pawl (12) lower end is provided with bailer grab, lance pawl (12) is connected with the spring (11) that lance pawl is resetted, and the salvaging respective outer side edges of lance pawl (12), spearhead (13) and whipstock is salvaged.
2. the combination fishing tool of a kind of Recoverable slant machine according to claim 1, it is characterized in that: described in drill through joint (3) through hole upper end and be provided with internal thread, lower end with drill through shaft (5) and be threaded, and the through hole lower end drilling through joint (3) is provided with step, drill through shaft (5) upper end correspondence and be provided with step and sealing ring (4), the step drilling through joint (3) through hole after being threaded coordinates spacing with the step drilling through shaft (5) and seals, and connection of thread welding.
3. the combination fishing tool of a kind of Recoverable slant machine according to claim 2, it is characterized in that: described in drill through shaft (5) lower end be cone, cone is evenly distributed with intake chute, clean-out opening (8) is arranged on bottom intake chute, and the even welding-on of multiple hard-metal insert (6) is in cone.
4. the combination fishing tool of a kind of Recoverable slant machine according to claim 1,2 or 3, it is characterized in that: described in drill through joint (3) external diameter be greater than the external diameter of the main body of whipstock, the external diameter of described fishing joint (7) is greater than the external diameter of the main body of whipstock.
5. the combination fishing tool of a kind of Recoverable slant machine according to claim 1,2 or 3, it is characterized in that: described in drill through shaft (5) length be greater than the length of the central bore that through whipstock main body and anchor block are arranged, the external diameter drilling through shaft (5) is less than the internal diameter of the stage casing endoporus of whipstock main body.
6. the combination fishing tool of a kind of Recoverable slant machine according to claim 1, it is characterized in that: described spearhead (13) comprises direct tube section, upper cone section and lower cone section, spring (11) one end is connected with lance pawl (12), the other end is connected with salvaging shaft (9), and multiple bailer grab forms bailer grab mechanism; When bailer grab is arranged in the epimere endoporus of whipstock main body, bailer grab is fitted in upper cone section, and the external diameter of bailer grab mechanism is greater than the internal diameter of the stage casing endoporus of whipstock main body; When lance pawl (12) move upward make bailer grab be arranged in the stage casing endoporus of whipstock main body time, bailer grab is positioned at direct tube section, and spring is compressive state, and the external diameter of bailer grab mechanism is less than the internal diameter of the stage casing endoporus of whipstock main body; When lance pawl is arranged in the hypomere endoporus of whipstock main body, bailer grab resets and is fitted in upper cone section, and the external diameter of bailer grab mechanism is greater than the internal diameter of the stage casing endoporus of whipstock main body.
7. the combination fishing tool of a kind of Recoverable slant machine according to claim 6, it is characterized in that: be provided with through hole in described fishing joint (7), salvaging shaft (9) and spearhead (13), fishing joint through hole, fishing spear rod through-hole are communicated with successively with spearhead through hole.
8. the combination fishing tool of a kind of Recoverable slant machine according to claim 7, it is characterized in that: the lower cone section of described spearhead (13) is evenly distributed with intake chute, be provided with clean-out opening (8) bottom intake chute, clean-out opening (8) is communicated with spearhead through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310219849.3A CN103277050B (en) | 2013-06-05 | 2013-06-05 | Recoverable whipstock and combined fishing tool thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310219849.3A CN103277050B (en) | 2013-06-05 | 2013-06-05 | Recoverable whipstock and combined fishing tool thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103277050A CN103277050A (en) | 2013-09-04 |
| CN103277050B true CN103277050B (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310219849.3A Active CN103277050B (en) | 2013-06-05 | 2013-06-05 | Recoverable whipstock and combined fishing tool thereof |
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| CN (1) | CN103277050B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670318A (en) * | 2013-12-06 | 2014-03-26 | 中国石油集团长城钻探工程有限公司 | Central hole fishing system of whipstock |
| EP3071783B1 (en) | 2014-01-15 | 2019-07-10 | Halliburton Energy Services Inc. | Well diverter assembly with substantially pressure balanced annular seal device |
| CN105604515B (en) * | 2016-02-29 | 2018-09-21 | 河北中荣石油机械有限责任公司 | Recoverable slant machine and its recycling tool |
| CN111206898B (en) * | 2020-03-31 | 2022-12-23 | 中国南水北调集团中线有限公司河南分公司 | Movable inclinometer probe pipe-disconnecting fisher and fishing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4767145A (en) * | 1986-10-06 | 1988-08-30 | Otis Engineering Corporation | Running and pulling tool |
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| US6019173A (en) * | 1997-04-04 | 2000-02-01 | Dresser Industries, Inc. | Multilateral whipstock and tools for installing and retrieving |
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| CN200964816Y (en) * | 2006-11-08 | 2007-10-24 | 新疆石油管理局钻井工艺研究院 | Lateral well whipstock-salvaging tool |
| CN102704878A (en) * | 2012-05-09 | 2012-10-03 | 中国石油天然气股份有限公司 | Recovery whipstock |
| CN203394349U (en) * | 2013-06-05 | 2014-01-15 | 中国石油集团川庆钻探工程有限公司 | Recoverable whipstock and combined fishing tool thereof |
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| US4767145A (en) * | 1986-10-06 | 1988-08-30 | Otis Engineering Corporation | Running and pulling tool |
| US5579829A (en) * | 1995-06-29 | 1996-12-03 | Baroid Technology, Inc. | Keyless latch for orienting and anchoring downhole tools |
| US6019173A (en) * | 1997-04-04 | 2000-02-01 | Dresser Industries, Inc. | Multilateral whipstock and tools for installing and retrieving |
| CN2864083Y (en) * | 2005-12-02 | 2007-01-31 | 中国石化胜利油田有限公司采油工艺研究院 | Lifting-putting fishing tool capable of withdrawing |
| CN200946477Y (en) * | 2006-05-11 | 2007-09-12 | 冀东石油勘探开发公司 | Multifunctional hydraulic quit type reversing fishing device capable of resisting falling |
| CN200964816Y (en) * | 2006-11-08 | 2007-10-24 | 新疆石油管理局钻井工艺研究院 | Lateral well whipstock-salvaging tool |
| CN102704878A (en) * | 2012-05-09 | 2012-10-03 | 中国石油天然气股份有限公司 | Recovery whipstock |
| CN203394349U (en) * | 2013-06-05 | 2014-01-15 | 中国石油集团川庆钻探工程有限公司 | Recoverable whipstock and combined fishing tool thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103277050A (en) | 2013-09-04 |
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Effective date of registration: 20201029 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Chuanqing Drilling Engineering Co.,Ltd. Address before: The 1 section of No. 3 company Chuanqing Drilling Technology Information Office Chenghua District Green Road 610051 Chengdu City, Sichuan Province Patentee before: CNPC Chuanqing Drilling Engineering Co.,Ltd. |