CN104912506A - Variable bent joint - Google Patents
Variable bent joint Download PDFInfo
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- CN104912506A CN104912506A CN201510351744.2A CN201510351744A CN104912506A CN 104912506 A CN104912506 A CN 104912506A CN 201510351744 A CN201510351744 A CN 201510351744A CN 104912506 A CN104912506 A CN 104912506A
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Abstract
The invention relates to a variable bent joint, and belongs to the technical field of an auxiliary fishing tool for a petroleum and natural gas well. The variable bent joint comprises an outer tube, a directional joint, a piston, an upper joint and a lower joint, wherein one end of the outer tube is provided with the upper joint through screw threads; the piston is arranged in the outer tube positioned at one side of the upper joint through a piston ring; the other end of the outer tube is provided with an upper ball seat through screw threads; and a cam is arranged in the outer tube positioned between the upper ball seat and the piston through a cam seat and a cam pin. In the use process of the variable bent joint, the bent corner action can be done, so that the problems that the existing tool can only be used for fishing fallen objects in a straight well or in the axial line direction of a well body and has a small use range and the problems of low repeated use rate and high cost of the existing fishing tool are solved. The variable bent joint has the advantages that the strength is high; greater pulling force, pressure and twisting force can be borne; the application range is wide; the variable bent joint can be matched with a drilling jar to be used; meanwhile, the back-off operation can be realized; and positive popularization significance is realized.
Description
Technical field
The present invention relates to a kind of Variable-Bend joint, belong to petroleum and natural gas well auxiliary salvaging tool technical field.
Background technology
In oil-water well manufacturing process, because a variety of causes often causes trouble of lost tool in hole and downhole tool to meet card.Various trouble of lost tool in hole affects the normal production of oil, gas, well to a great extent, can cause stopping production time serious, and along with high angle hole, the developing rapidly of horizontal well, due to factors such as instrument, stratum, operations, down-hole accident is more difficult to avoid.Accident treatment difficulty great horizontal well trouble of lost tool in hole fishing operation is valued by the people gradually, therefore, needs, for dissimilar trouble of lost tool in hole, to select corresponding fishing tool, find trouble of lost tool in hole, recovers the normal production of oil, gas, well.At present according to the kind of trouble of lost tool in hole, fishing can be divided into four classes: tubing fishing junk, bar class fishing junk, thing are salvaged and small falling object drags for.Drag in can being divided into according to the mode of salvaging simultaneously and drag for two kinds of salvaging modes outward.
The more fishing tool of current application comprises fishing spear, die nipple, female coupling tap, fishing socket etc., and this type of fishing tool applied at present, maybe can only can only salvage the junk of well bore axis direction at straight well, the scope of application is less.Under fishing tool is equipped with incomplete situation, accident treatment mainly according to concrete condition processing fishing tool in well, is even continued to use straight well fishing process technology, is had fishing tool repeat usage low, the deficiency that cost is high.
Summary of the invention
The object of the invention is to: provide one in use can produce bent angle action, thus be the oblique possibility of salvaging fish of fishing tool increase, to increase the success rate of salvaging; And can bear larger to draw, press, twisting resistance, applied widely, bumper jar can not only be coordinated to use, the Variable-Bend joint of back-off operation can be carried out simultaneously.
The present invention realizes above-mentioned purpose by following technical solution:
A kind of Variable-Bend joint, comprises urceolus, orientation joint, piston, top connection and lower contact; It is characterized in that: the threaded one end of urceolus is provided with top connection; By piston ring, piston is installed in the urceolus of top connection side; The other end screw thread of urceolus is provided with upper ball base, is provided with cam in the urceolus between upper ball base and piston by cam chair and cam pin; Upper ball base side is provided with lower ball base, is threaded between upper ball base with lower ball base by connecing to pull out; Be provided with orientation joint by king pin in lower ball base and connecing pulls out, one end of orientation joint extends to lower ball base outer end, and on the orientation joint extending to lower ball base outer end, screw thread is provided with lower contact; Described cam one end is connected with piston contact, and the cam other end contacts with orientation joint and connects, and the centre of described orientation joint, piston, top connection and lower contact is respectively arranged with centre bore; Current limliting plug is movably set with in the centre bore of piston; Described cam is the convex shape of tabular, and the bottom of cam is provided with fitting recess, fitting recess is provided with cam pin-and-hole; Described orientation joint is tubular article, the projection being circumferentially provided with arc-shaped of orientation joint, and the orientation joint termination of protruding side is taper; The projection of described orientation joint and connecing is provided with sealing ring between pulling out.
Described piston and the centre bore of top connection are step-like.
Adjusting washer (disk) is provided with between described orientation joint and lower contact.
Described current limliting plug center is provided with runner.
The invention has the advantages that:
This Variable-Bend joint in use, bent angle action can be produced, and can with the fishing tool such as die nipple, female coupling tap, fishing socket, fishing spear with the use of, thus obliquely reap fish for fishing tool increases and add possibility, improve fishing success ratio thus; Avoid existing instrument maybe can only can only salvage well bore axis direction junk at straight well, and the scope of application is little, and existing fishing tool repeat usage is low, the deficiency that cost is high.This intensity that can increase the Variable-Bend joint of oblique degree is high, can bear larger to draw, press, twisting resistance, applied widely, bumper jar can not only be coordinated to use, can back-off operation be carried out simultaneously; There is positive dissemination.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Schematic diagram when Fig. 2 is bent angle action of the present invention;
Fig. 3 is the structural representation of cam of the present invention;
Fig. 4 be Figure 1A-A to profile.
In figure: 1, urceolus, 2, orientation joint, 3, piston, 4, top connection, 5, lower contact, 6, piston ring, 7, upper ball base, 8, cam chair, 9, cam pin, 10, cam, 11, fitting recess, 12, cam pin-and-hole, 13, lower ball base, 14, connect and pull out, 15, king pin, 16, adjusting washer (disk), 17, current limliting plug.
Detailed description of the invention:
This Variable-Bend joint comprises urceolus 1, orientation joint 2, piston 3, top connection 4 and lower contact 5.The threaded one end of urceolus 1 is provided with top connection 4; By piston ring 6, piston 3 is installed in the urceolus 1 of top connection 4 side.Piston ring 6 is three lobe rings, and piston ring 6 is sleeved on piston 3.The other end screw thread of urceolus 1 is provided with upper ball base 7, is provided with cam 10 in the urceolus 1 between upper ball base 7 and piston 3 by cam chair 8 and cam pin 9.The rotation that cam 10 can realize to a certain degree around cam pin 9, the convex shape of cam 10 in tabular, the bottom of cam 10 is provided with fitting recess 11, fitting recess 11 is provided with cam pin-and-hole 12.
Upper ball base 7 side is provided with lower ball base 13, pulls out 14 and is threaded between upper ball base 7 with lower ball base 13 by connecing; Lower ball base 13 is provided with orientation joint 2 with connecing to pull out in 14 by king pin 15.Orientation joint 2 is fixed on lower ball base 13 by king pin 15, can realize rotation to a certain extent.Orientation joint 2 is tubular article, the projection being circumferentially provided with arc-shaped of orientation joint 2, and orientation joint 2 termination of protruding side is taper; The projection of orientation joint 2 and connect pull out 14 between be provided with sealing ring, to realize orientation joint 2 and lower ball base 13 and to connect the sealing of pulling out between 14.
One end of orientation joint 2 extends to lower ball base 13 outer end, and on the orientation joint 2 extending to lower ball base 13 outer end, screw thread is provided with lower contact 5; Adjusting washer (disk) 16 is provided with between the junction of orientation joint 2 and lower contact 5.One end of cam 10 contacts with piston 3 and connects, and the other end of cam 10 contacts with orientation joint 2 and connects.
The centre of the orientation joint 2 of this Variable-Bend joint, piston 3, top connection 4 and lower contact 5 is respectively arranged with centre bore; The centre bore of piston 3 and top connection 4 is step-like.Current limliting plug 17 is movably set with in the centre bore of piston 3; Current limliting plug 17 center is provided with runner.
During the work of this Variable-Bend joint, be connected with drill collar or drilling rod by top connection 4, be connected by fishing tools such as lower contact 5 and die nipple, female coupling tap, fishing socket, fishing spears.
When fish salvaged by needs, this Variable-Bend joint is salvaged position by entering to need under drilling tool, when fish central axis and fishing spear axis inconsistent, or when adjusting drilling assembly more by a small margin and can not salvaging fish, now can use and can increase oblique degree by bent sub, to increase the success rate of salvaging fish.Detailed description of the invention is, when needs increase oblique spending, the upper end joint of current limliting plug 17 is connected by fisher, current limliting plug is entered piston 3 for 17 times inner, unload current limliting plug 17, fisher is proposed, turn on pump passes into drilling fluid, due to the throttling action of current limliting plug 17, piston 3 upper and lower end face produces pressure reduction, pressure effect makes piston 3 move downward, actuating cam 10 rotates around cam pin 9, connect because cam 10 contacts with orientation joint 2, orientation joint 2 is rotated around king pin 15, thus make lower contact 5 drive fishing tool to rotate (as shown in Figure 2), increase the oblique degree of fishing tool thus, thus increase the success rate that fish salvaged by fishing tool.After fish success salvaged by fishing tool, fisher is entered under termination of pumping, rotating fisher makes it connect end joint on current limliting plug 17, on carry after fisher proposes current limliting plug 17, on carry salvaging drilling tool, orientation joint 2 under lower contact 5 and fish gravity, automatic straightening, continuation is carried drilling tool to ground, complete fishing.
This Variable-Bend joint design is simple, novel in design, solve existing instrument maybe can only can only salvage well bore axis direction junk at straight well, and the scope of application is little, and existing fishing tool repeat usage is low, the problem that cost is high.The intensity of this Variable-Bend joint is high, can bear larger to draw, press, twisting resistance, applied widely, bumper jar can not only be coordinated to use, can back-off operation be carried out simultaneously, there is positive dissemination.
Embodiment of the present invention is only the description carried out the preferred embodiment of the present invention; not design of the present invention and scope are limited; under the prerequisite not departing from design philosophy of the present invention; the various distortion that in this area, engineers and technicians make technical scheme of the present invention and improvement; protection scope of the present invention all should be fallen into; the technology contents of request protection of the present invention, all records in detail in the claims.
Claims (4)
1. a Variable-Bend joint, comprises urceolus (1), orientation joint (2), piston (3), top connection (4) and lower contact (5); It is characterized in that: the threaded one end of urceolus (1) is provided with top connection (4); By piston ring (6), piston (3) is installed in the urceolus (1) of top connection (4) side; The other end screw thread of urceolus (1) is provided with upper ball base (7), is provided with cam (10) in the urceolus (1) between upper ball base (7) and piston (3) by cam chair (8) and cam pin (9); Upper ball base (7) side is provided with lower ball base (13), pulls out (14) be threaded between upper ball base (7) with lower ball base (13) by connecing; Lower ball base (13) and connecing pulls out in (14) and is provided with orientation joint (2) by king pin (15), one end of orientation joint (2) extends to lower ball base (13) outer end, and the upper screw thread of orientation joint (2) extending to lower ball base (13) outer end is provided with lower contact (5); Described cam (10) one end contacts with piston (3) and connects, cam (10) other end contacts with orientation joint (2) and connects, and the centre of described orientation joint (2), piston (3), top connection (4) and lower contact (5) is respectively arranged with centre bore; Current limliting plug (17) is movably set with in the centre bore of piston (3); Described cam (10) convex shape in tabular, the bottom of cam (10) is provided with fitting recess (11), fitting recess (11) is provided with cam pin-and-hole (12); Described orientation joint (2) is tubular article, the projection being circumferentially provided with arc-shaped of orientation joint (2), and orientation joint (2) termination of protruding side is taper; The projection of described orientation joint (2) and connect to pull out between (14) and be provided with sealing ring.
2. a kind of Variable-Bend joint that can increase oblique degree according to claim 1, is characterized in that: described piston (3) and the centre bore of top connection (4) are step-like.
3. a kind of Variable-Bend joint that can increase oblique degree according to claim 1, is characterized in that: be provided with adjusting washer (disk) (16) between described orientation joint (2) and lower contact (5).
4. a kind of Variable-Bend joint that can increase oblique degree according to claim 1, is characterized in that: described current limliting plug (17) center is provided with runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510351744.2A CN104912506A (en) | 2015-06-24 | 2015-06-24 | Variable bent joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510351744.2A CN104912506A (en) | 2015-06-24 | 2015-06-24 | Variable bent joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104912506A true CN104912506A (en) | 2015-09-16 |
Family
ID=54081899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510351744.2A Pending CN104912506A (en) | 2015-06-24 | 2015-06-24 | Variable bent joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104912506A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057737A (en) * | 2018-10-31 | 2018-12-21 | 长江大学 | A kind of down-hole fishing device that can be operated repeatedly |
| CN110863788A (en) * | 2019-12-10 | 2020-03-06 | 贵州高峰石油机械股份有限公司 | Hydraulic bendable pen point device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2285213A (en) * | 1941-07-30 | 1942-06-02 | Bus Franklin L Le | Knuckle joint |
| US2680483A (en) * | 1949-05-02 | 1954-06-08 | Bus Franklin L Le | Method and apparatus for recovering lost drill pipe |
| CN2658375Y (en) * | 2003-11-14 | 2004-11-24 | 中国石化集团胜利石油管理局黄河钻井总公司管具公司 | Fisher |
| CN102713138A (en) * | 2009-12-30 | 2012-10-03 | 韦尔泰克有限公司 | Downhole guiding tool |
| CN203081380U (en) * | 2012-12-20 | 2013-07-24 | 辽宁石油机械制造有限公司 | Movable elbow joint |
| CN204703820U (en) * | 2015-06-24 | 2015-10-14 | 长江大学 | A kind of Variable-Bend joint |
-
2015
- 2015-06-24 CN CN201510351744.2A patent/CN104912506A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2285213A (en) * | 1941-07-30 | 1942-06-02 | Bus Franklin L Le | Knuckle joint |
| US2680483A (en) * | 1949-05-02 | 1954-06-08 | Bus Franklin L Le | Method and apparatus for recovering lost drill pipe |
| CN2658375Y (en) * | 2003-11-14 | 2004-11-24 | 中国石化集团胜利石油管理局黄河钻井总公司管具公司 | Fisher |
| CN102713138A (en) * | 2009-12-30 | 2012-10-03 | 韦尔泰克有限公司 | Downhole guiding tool |
| CN203081380U (en) * | 2012-12-20 | 2013-07-24 | 辽宁石油机械制造有限公司 | Movable elbow joint |
| CN204703820U (en) * | 2015-06-24 | 2015-10-14 | 长江大学 | A kind of Variable-Bend joint |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057737A (en) * | 2018-10-31 | 2018-12-21 | 长江大学 | A kind of down-hole fishing device that can be operated repeatedly |
| CN109057737B (en) * | 2018-10-31 | 2023-08-22 | 长江大学 | Repeatedly operable underground fishing device |
| CN110863788A (en) * | 2019-12-10 | 2020-03-06 | 贵州高峰石油机械股份有限公司 | Hydraulic bendable pen point device |
| CN110863788B (en) * | 2019-12-10 | 2023-11-28 | 贵州高峰石油机械股份有限公司 | Hydraulic bendable nib device |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into 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: 20150916 |