CN103912231A - Drill rod male-thread fisher - Google Patents
Drill rod male-thread fisher Download PDFInfo
- Publication number
- CN103912231A CN103912231A CN201410139496.0A CN201410139496A CN103912231A CN 103912231 A CN103912231 A CN 103912231A CN 201410139496 A CN201410139496 A CN 201410139496A CN 103912231 A CN103912231 A CN 103912231A
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- China
- Prior art keywords
- fishing
- thread
- sleeve
- head
- internal diameter
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
A drill rod male-thread fisher comprises a fishing connector, a fishing head and fishing sleeve and is characterized in that drill rod female threads or drill rod male threads are formed on the upper portion of the fishing connector, male threads are formed on the lower portion of the fishing connector, the inner diameter of the upper portion of the fishing connector is smaller than that of the lower portion of the fishing connector, the lower portion of the fishing connector is provided with a hexagonal hole and sleeves the upper portion of the fishing head, the upper portion of the fishing sleeve is connected with the male threads of the lower portion of the fishing connector, the lower portion of the fishing sleeve is provided with a conical hole and sleeves the lower portion of the fishing head, and a certain space allowing for opening and closing the female-thread section of the lower portion of the fishing head is reserved between the fishing sleeve and the fishing head. The drill rod male-thread fisher has the advantages the fishing head is movably connected, interlock of a drill rod and a dropped drill is facilitated, thread damage can be avoided, the fishing female threads have multiple sections, easy interlock is achieved, tight interlock is achieved under the action of the fishing sleeve, dropping during inverted dropped drill fishing can be avoided, 100% fishing success rate can be achieved, and the drill rod male-thread fisher is simple in structure, reliable in principle, convenient in construction and low in manufacturing cost.
Description
Technical field
The present invention relates to a kind ofly process the drilling rod fishing tool used in well accident that falls at oil drilling, specifically a kind of fish upper end is male thread and the drilling rod male thread fisher that need carry out back-off operation.
Background technology
In Process of Oil Well Drilling, for various reasons, drill string lock of tool drilling happens occasionally.If accident treatment is not in time, easily cause down-hole situation complicated, affect the completion efficiency of oil drilling.Bit freezing just need to and carry out the measures such as back-off operation and salvage drill string by injecting decoder, lower bumper jar jarring, by cover milling drill string.If the upper end of fish is box thread, with existing reverse buckling equipment just easily back-off pull out.But, occur that fish upper end is male thread and need to carry out back-off operation time, it is helpless that existing fishing tool just seems.
For this kind of situation, we design and have processed a kind of down-hole and be specifically designed to that to salvage fish upper end be the reversing tool of male thread, and have passed through, in drilling team practical application checking, to obtain successfully.Salvage accuracy rate 100%.
Summary of the invention
It is the male thread fisher of male thread that object of the present invention designs a kind of drilling rod fish upper end, can realize the fish of various different sizes is carried out to fishing according to actual needs, making upper end is that the fish fishing success rate of male thread significantly improves, and can greatly shorten the drilling failure processing time.
Technical scheme of the present invention is achieved in the following ways:
The present invention includes fishing joint, fishing head and fishing sleeve, it is characterized in that: fishing joint top is provided with drilling rod box thread or drilling rod male thread, bottom is provided with male thread, top internal diameter is less than bottom internal diameter, and bottom is provided with six rib holes, and is placed on fishing head top, fishing sleeve top is connected with fishing joint bottom male thread, fishing sleeve bottom is made as round taper hole, and is placed on fishing head bottom, leaves the certain space of fishing head bottom box thread section opening and closing between fishing sleeve and fishing head.
Fishing head middle part diameter is greater than upper diameter and lower diameter, middle part internal diameter is less than top internal diameter and bottom internal diameter, top is made as six prismatics, middle part is made as cylindrical, and bottom is made as regular conical, and the reducer at top and middle part is made as 45 degree taper surfaces, upper axial is provided with together cracks, middle part is upwards provided with 3 roads or 4 roads or 6 roads to lower shaft and cracks, and angle is 120 degree or 90 degree or 60 degree, and bottom is provided with Taper Pipe box thread.
Fishing sleeve is made as cylindrical, and top is provided with female coupling tap gas thread, and top internal diameter is greater than bottom internal diameter, and bottom endoporus is made as regular conical.
Compared with the prior art the present invention has the following advantages:
1, fishing head is made as active link, is convenient to and drilling rod fish make-up, can not damage screw thread, salvages box thread and is made as multi-petal shape, and upper button is easy, and under the effect of fishing sleeve, more goes up tightlyer, salvages when fish and can not come off at back-off, ensures fishing success ratio 100%.
2, simple in structure, principle is reliable, and easy construction is cheap.
Brief description of the drawings
Fig. 1 is structural representation of the present invention
Fig. 2 is the structural representation of fishing head
Fig. 3 is the sectional view of V-V in Fig. 2
Fig. 4 is the sectional view of A-A in Fig. 2
1-fishing joint 2-fishing head 3-fishing sleeve in Fig. 1.
Detailed description of the invention
For further disclosing technical scheme of the present invention, elaborate by embodiment below in conjunction with Figure of description:
The present invention includes fishing joint 1, fishing head 2 and fishing sleeve 3, it is characterized in that: fishing joint top is provided with drilling rod box thread or drilling rod male thread, bottom is provided with male thread, top internal diameter is less than bottom internal diameter, and bottom is provided with six rib holes, and be placed on fishing head top, fishing sleeve top is connected with fishing joint bottom male thread, fishing sleeve bottom is made as round taper hole, and is placed on fishing head bottom, leaves the certain space of fishing head bottom box thread section breathing between fishing sleeve and fishing head.
Using method of the present invention: in drilling process, if there is the drilling rod well accident that falls, drilling rod fish upper end is that the utilized fishing string of male thread is connected with male thread fisher, calculates the degree of depth of fish fish head, according to the length of a fish Depth determination fishing string according to aboveground data.In the time of the nearly fish of male thread fisher, write down the suspending weight of weight indicator, turn on pump circulation, fully clean fish a period of time, slowly transfer fishing string, slowly rotate rotating disk, the male thread of being convenient to fish drilling rod is introduced the box thread of drilling rod male thread fisher, and fish is introduced after box thread, want slowly to transfer fishing string on one side and slowly rotate rotating disk on one side, slowly, to buckling button, after general ten multi-turns of dial rotation, stop operating, slowly upper lifting pipe post, observation suspending weight has unchanged, if suspending weight becomes large, explanation is dragged for and obtained fish; Otherwise just repeat above-mentioned steps, continue to salvage fish.If after engaging fish, give fishing string certain on put forward load, determine load according to the quality of fish and drill string back-off feature, carry out back-off operation according to the code requirement of drill string back-off, after back-off success, trip out back-off tubing string, salvage successfully.It is the fish salvaging problem of male thread that the present invention has solved drilling team upper end in drilling process effectively, shortens the salvaging time, improves fishing success ratio, avoids the generation of down hole problem, rate while effectively improving bit speed and completion.
Claims (3)
1. a drilling rod male thread fisher, comprise fishing joint, fishing head and fishing sleeve, it is characterized in that: fishing joint top is provided with drilling rod box thread or drilling rod male thread, bottom is provided with male thread, top internal diameter is less than bottom internal diameter, bottom is provided with six rib holes, and be placed on fishing head top, fishing sleeve top is connected with fishing joint bottom male thread, fishing sleeve bottom is made as round taper hole, and be placed on fishing head bottom, between fishing sleeve and fishing head, leave the certain space of fishing head bottom box thread section opening and closing.
2. drilling rod male thread fisher according to claim 1, it is characterized in that: fishing head middle part diameter is greater than upper diameter and lower diameter, middle part internal diameter is less than top internal diameter and bottom internal diameter, top is made as six prismatics, middle part is made as cylindrical, bottom is made as regular conical, the reducer at top and middle part is made as 45 degree taper surfaces, upper axial is provided with together cracks, middle part is upwards provided with 3 roads or 4 roads or 6 roads to lower shaft and cracks, angle is 120 degree or 90 degree or 60 degree, and bottom is provided with Taper Pipe box thread.
3. drilling rod male thread fisher according to claim 1, is characterized in that: fishing sleeve is made as cylindrical, and top is provided with female coupling tap gas thread, and top internal diameter is greater than bottom internal diameter, and bottom endoporus is made as regular conical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410139496.0A CN103912231A (en) | 2014-04-09 | 2014-04-09 | Drill rod male-thread fisher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410139496.0A CN103912231A (en) | 2014-04-09 | 2014-04-09 | Drill rod male-thread fisher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103912231A true CN103912231A (en) | 2014-07-09 |
Family
ID=51038196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410139496.0A Pending CN103912231A (en) | 2014-04-09 | 2014-04-09 | Drill rod male-thread fisher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103912231A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469458A (en) * | 2018-09-27 | 2019-03-15 | 核工业北京地质研究院 | A kind of circlip type fisher and its Refloatation method |
| CN113445937A (en) * | 2021-07-09 | 2021-09-28 | 中国煤炭地质总局第二水文地质队 | Butt joint construction method for large-diameter drilling inner sleeve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4066282A (en) * | 1974-10-23 | 1978-01-03 | Vann Roy Randell | Positive tubing release coupling |
| CN201277001Y (en) * | 2008-10-24 | 2009-07-22 | 中国石化集团胜利石油管理局黄河钻井总公司 | Guiding type interlocking connector |
| CN201318144Y (en) * | 2008-12-12 | 2009-09-30 | 胜利油田胜利动力机械集团有限公司 | Lift-put type left hand fishing spear |
| CN202510075U (en) * | 2012-03-31 | 2012-10-31 | 中国石油天然气集团公司 | Guider die collar |
| CN202788718U (en) * | 2012-09-10 | 2013-03-13 | 中国石油集团川庆钻探工程有限公司 | Split fishing barrel |
| CN202937218U (en) * | 2012-12-18 | 2013-05-15 | 大庆市腾飞石油机械有限公司 | Pin fisher |
-
2014
- 2014-04-09 CN CN201410139496.0A patent/CN103912231A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4066282A (en) * | 1974-10-23 | 1978-01-03 | Vann Roy Randell | Positive tubing release coupling |
| CN201277001Y (en) * | 2008-10-24 | 2009-07-22 | 中国石化集团胜利石油管理局黄河钻井总公司 | Guiding type interlocking connector |
| CN201318144Y (en) * | 2008-12-12 | 2009-09-30 | 胜利油田胜利动力机械集团有限公司 | Lift-put type left hand fishing spear |
| CN202510075U (en) * | 2012-03-31 | 2012-10-31 | 中国石油天然气集团公司 | Guider die collar |
| CN202788718U (en) * | 2012-09-10 | 2013-03-13 | 中国石油集团川庆钻探工程有限公司 | Split fishing barrel |
| CN202937218U (en) * | 2012-12-18 | 2013-05-15 | 大庆市腾飞石油机械有限公司 | Pin fisher |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469458A (en) * | 2018-09-27 | 2019-03-15 | 核工业北京地质研究院 | A kind of circlip type fisher and its Refloatation method |
| CN113445937A (en) * | 2021-07-09 | 2021-09-28 | 中国煤炭地质总局第二水文地质队 | Butt joint construction method for large-diameter drilling inner sleeve |
| CN113445937B (en) * | 2021-07-09 | 2022-07-29 | 中国煤炭地质总局第二水文地质队 | Butt joint construction method for large-diameter drilling inner sleeve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140709 |
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| WD01 | Invention patent application deemed withdrawn after publication |