CN106522865B - Radial level drilling flexible shaft fishing tool - Google Patents
Radial level drilling flexible shaft fishing tool Download PDFInfo
- Publication number
- CN106522865B CN106522865B CN201611020377.9A CN201611020377A CN106522865B CN 106522865 B CN106522865 B CN 106522865B CN 201611020377 A CN201611020377 A CN 201611020377A CN 106522865 B CN106522865 B CN 106522865B
- Authority
- CN
- China
- Prior art keywords
- bulb
- pipe nipple
- flexible shaft
- fishing socket
- ball head
- 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.)
- Active
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/18—Grappling tools, e.g. tongs or grabs gripping externally, e.g. overshot
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/14—Grappling tools, e.g. tongs or grabs with means deflecting the direction of the tool, e.g. by use of knuckle joints
Abstract
The present invention relates to radial level drilling technique field, in particular to a kind of radial level drilling flexible shaft fishing tool.The top connection lower end connecting ball head universal joint of the device, ball head universal lower end connects lower contact, ball head universal is connected in sequence by multiple bulb pipe nipples, it symmetrically opens there are four keyway at the bulb end of bulb pipe nipple, screw hole there are four symmetrically being opened in the other end bulb slot of bulb pipe nipple, four screw holes are connected by connecting pin with the bulb end keyway of the bulb pipe nipple of upper end in the bulb slot of bulb pipe nipple, two neighboring bulb pipe nipple can Bending Rotation, lower contact lower end connect fishing socket ontology.The present invention, which realizes, successfully to salvage to flexible shaft is fallen, and do not influence radial bore construction after salvaging successfully, reduce accident risk, mitigate operating personnel's labor intensity, shorten the accident treatment period, saved construction cost.
Description
Technical field:
The present invention relates to radial level drilling technique field, in particular to a kind of radial level drilling flexible shaft salvages work
Tool.
Background technique:
When radial level drilling construction, the rotary drilling on stratum is carried out after casing ends window.Creep into tubing string group in stratum
Conjunction is that upper end is screw rod, and screw rod connects flexible shaft, and flexible shaft lower end connects diamond bit.Ground driving is suppressed by high-pressure pump
Screw rod, screw rod drive flexible shaft and bit to carry out broken rock and realize drilling depth.In the drilling process of stratum, due to bit pressure, stratum
Often there is flexible axle fracture, falls in pit shaft, if flexible shaft is retained in drilling in the influence of the factors such as hardness and flexible shaft intensity
Guide rail outlet can be blocked in tool guide rail, influence to construct.If can not salvage, entire operating tool string need to be played out, it is time-consuming and laborious, increase
Add construction period and cost.It also cannot achieve the salvaging for falling flexible shaft at this stage.
Summary of the invention:
The technical problem to be solved in the present invention is to provide a kind of radial level drilling flexible shaft fishing tool, which is realized
It can successfully be salvaged to flexible shaft is fallen, not influence radial bore construction after salvaging successfully, reduce accident risk, mitigate and make
Industry personnel labor intensity shortens the accident treatment period, has saved construction cost.Existing flexible axle fracture is overcome to fall in pit shaft
The deficiency that can not be salvaged.
The flexible shaft fishing tool the technical solution used in the present invention is: a kind of radial level drills, including top connection, under
Connector and fishing socket ontology；Top connection lower end connecting ball head universal joint, ball head universal lower end connect lower contact, ball head universal
It is connected in sequence by multiple bulb pipe nipples, the bulb end of bulb pipe nipple is symmetrically opened there are four keyway, the other end of bulb pipe nipple
It is symmetrically opened in bulb slot there are four screw hole, four screw holes pass through the ball of connecting pin and upper end in the bulb slot of bulb pipe nipple
Head pipe nipple bulb end keyway be connected, two neighboring bulb pipe nipple can Bending Rotation, lower contact lower end connect fishing socket sheet
Body, fishing socket ontology internal diameter are greater than flexible shaft outer diameter, and in the shape of a spiral, fishing socket ontology intermediate inner wall is equipped with for fishing socket ontology front end
Expanding area wide at the top and narrow at the bottom is equipped with C-shaped ring in expanding area, and C-shaped ring is made of spring steel, there is 45 ° of notches, c-type in C-shaped ring
Thread is equipped in ring ring.
The beneficial effects of the present invention are: the present invention can successfully be salvaged to flexible shaft is fallen, diameter is not influenced after salvaging successfully
To drilling construction, accident risk is reduced, mitigates operating personnel's labor intensity, shortens the accident treatment period, has saved and be constructed into
This.
Detailed description of the invention:
The present invention will be further described in detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structural schematic diagram of bulb pipe nipple.
Fig. 3 is the structural schematic diagram of C-shaped ring.
Fig. 4 is the schematic diagram when present invention uses.
Specific embodiment:
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of radial level drilling flexible shaft fishing tool, including top connection 1, lower contact 3
With fishing socket ontology 4；1 lower end connecting ball head universal joint 2 of top connection, 2 lower end of ball head universal connect lower contact 3, and bulb is universal
Section 2 is connected in sequence by multiple bulb pipe nipples 5, and the bulb end of bulb pipe nipple 5 is symmetrically opened there are four keyway, bulb pipe nipple 5
Symmetrically opened in other end bulb slot there are four screw hole, in the bulb slot of bulb pipe nipple 5 four screw holes by connecting pin 6 with
The bulb end keyway of the bulb pipe nipple 5 of upper end is connected, two neighboring bulb pipe nipple 5 can Bending Rotation, two bulb pipe nipples 5
Bending angle is connected up to 30 °, is freely rotatable as joint, is reached when several bulb pipe nipples 5 are sequentially connected
Certain length can pass through the guide rail of certain curvature, and transmitting torque and bit pressure can be achieved in guide rail；3 lower end of lower contact
Fishing socket ontology 4 is connected, 4 internal diameter of fishing socket ontology is greater than flexible shaft outer diameter, and flexible shaft can be wrapped in interior, fishing socket ontology
In the shape of a spiral, bootable flexible shaft enters in fishing socket ontology 4 for 4 front ends.4 intermediate inner wall of fishing socket ontology is equipped with wide at the top and narrow at the bottom
Expanding area is equipped with C-shaped ring 7 in expanding area, and C-shaped ring 7 is made of spring steel, has 45 ° of notches in C-shaped ring 7, i.e. C-shaped ring 7 is deposited
It is equipped with thread in the notch of the arc length of entire 1/7th eight perimeter of C-shaped ring, 7 ring of C-shaped ring, prevents flexible shaft from exiting.When soft
Property axis is squeezed into C-shaped ring 7 under certain bit pressure, and C-shaped ring 7 is expanding, matches with the expanding area of fishing socket ontology 4, securely locks soft
Property axis, complete salvage.
As shown in figure 4, when occurring flexible axle fracture in the drilling process of stratum and being retained in the situation in guide rail, tripping in sheet
Invention, the present invention can be connected in the drilling pipe string of stratum, be directly connected on the feeding pipe of screw rod lower end, pass through beating for front tool
Dipper rotating down pressing is implemented to salvage to flexible shaft is fallen.
During radial level drilling construction, stratum drilling operation is being carried out, is being sent out when acting stratum drilling tubing string
Existing flexibility axle fracture, judges that flexible shaft a part is fallen in the guide rail of boring bar tool, influences to construct in next step.It is implementable at this time to beat
Vatman makees: tubing string is crept on present invention access stratum, i.e., is sent into the end of pipe by being threaded into.By cable band stratum drilling pipe
String transfers to purpose depth, by high pressure pump group ground injected clear water, suppresses 12Mpa, pumpage 12L/min, high pump pressure driving
Piston is pushed ahead, and the present invention is sent into guide rail, and provides salvaging required bit pressure；Hydraulic action drives screw rod rotation, screw rod
Feeding pipe and fishing tool rotation are driven, fishing socket rotating down pressing captures flexible shaft, under pump pressure can slightly have after acquisition success
Drop.Turn on pump is run 5 minutes, improves fishing success ratio.Upper portable cable after termination of pumping will salvage pipe and string out ground, takes out and salvage
Cylinder, flexible shaft is exited；If salvaging unsuccessful repeatable above-mentioned steps repeatedly to salvage, until salvaging successfully.Fishing socket itself
For vulnerable part, if flexible shaft can not smoothly take out from fishing socket after salvaging, the fishing socket that directly can more renew is had no effect on
Operation.
It is understood that being merely to illustrate the present invention above with respect to specific descriptions of the invention and being not limited to this
Technical solution described in inventive embodiments, those skilled in the art should understand that, still the present invention can be carried out
Modification or equivalent replacement, to reach identical technical effect；As long as meet use needs, all protection scope of the present invention it
It is interior.
Claims (1)
- The flexible shaft fishing tool 1. a kind of radial level drills, including top connection (1), lower contact (3) and fishing socket ontology (4)； It is characterized by: top connection (1) lower end connecting ball head universal joint (2), ball head universal (2) lower end connects lower contact (3), bulb Universal joint (2) is connected in sequence by multiple bulb pipe nipples (5), and the bulb end of bulb pipe nipple (5) is symmetrically opened there are four keyway, ball It is symmetrically opened in the other end bulb slot of head pipe nipple (5) there are four screw hole, four screw holes are logical in the bulb slot of bulb pipe nipple (5) It crosses connecting pin (6) to be connected with the bulb end keyway of the bulb pipe nipple (5) of upper end, two neighboring bulb pipe nipple (5) can be curved Qu Xuanzhuan, lower contact (3) lower end connect fishing socket ontology (4), and fishing socket ontology (4) internal diameter is greater than flexible shaft outer diameter, fishing socket In the shape of a spiral, fishing socket ontology (4) intermediate inner wall is equipped with expanding area wide at the top and narrow at the bottom for ontology (4) front end, is equipped with C in expanding area Type ring (7), C-shaped ring (7) are made of spring steel, are had 45 ° of notches in C-shaped ring (7), are equipped with thread in C-shaped ring (7) ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611020377.9A CN106522865B (en) | 2016-11-21 | 2016-11-21 | Radial level drilling flexible shaft fishing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611020377.9A CN106522865B (en) | 2016-11-21 | 2016-11-21 | Radial level drilling flexible shaft fishing tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106522865A CN106522865A (en) | 2017-03-22 |
| CN106522865B true CN106522865B (en) | 2019-04-02 |
Family
ID=58352823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611020377.9A Active CN106522865B (en) | 2016-11-21 | 2016-11-21 | Radial level drilling flexible shaft fishing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106522865B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106978984A (en) * | 2017-06-08 | 2017-07-25 | 广汉川亿石油科技有限公司 | A kind of deep-well, which breaks, falls drilling tool fishing device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204238896U (en) * | 2014-11-17 | 2015-04-01 | 韩光明 | Directional well strong magnetic die |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MX160919A (en) * | 1985-12-19 | 1990-06-19 | Dickinson Ben Wade O Iii | EARTH WELL DRILLING APPARATUS AND METHOD FOR FORMING IT |
| US6276453B1 (en) * | 1999-01-12 | 2001-08-21 | Lesley O. Bond | Method and apparatus for forcing an object through the sidewall of a borehole |
| CN101294480B (en) * | 2008-06-03 | 2012-08-15 | 中国海洋石油总公司 | Device for drilling miniature borehole on ultra-short radius of coiled tubing |
| CN202417376U (en) * | 2011-12-19 | 2012-09-05 | 中国石油集团川庆钻探工程有限公司川东钻探公司 | Releasing follow sleeve fishing socket |
| CN202810745U (en) * | 2012-08-28 | 2013-03-20 | 中国石油集团长城钻探工程有限公司 | Catch sleeve special for spring-type coring tool |
| CN205063883U (en) * | 2015-11-02 | 2016-03-02 | 徐进 | Oil field borehole operation is with a multi -functional salvage section of thick bamboo |
-
2016
- 2016-11-21 CN CN201611020377.9A patent/CN106522865B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204238896U (en) * | 2014-11-17 | 2015-04-01 | 韩光明 | Directional well strong magnetic die |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106522865A (en) | 2017-03-22 |
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| SE01 | Entry into force of request for substantive examination | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20201020 Address after: No. 6, liupukang, Xicheng District, Beijing 100120 Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: China National Petroleum Corporation Great Wall Drilling Engineering Co.,Ltd. Address before: 124010 Xinglongtai, Liaoning Province, oil street, No. 96, No. Patentee before: China National Petroleum Corporation Great Wall Drilling Engineering Co.,Ltd. |