CN113503142B - Kelly bar plug valve for offshore oilfield drilling - Google Patents
Kelly bar plug valve for offshore oilfield drilling Download PDFInfo
- Publication number
- CN113503142B CN113503142B CN202110856311.8A CN202110856311A CN113503142B CN 113503142 B CN113503142 B CN 113503142B CN 202110856311 A CN202110856311 A CN 202110856311A CN 113503142 B CN113503142 B CN 113503142B
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- Prior art keywords
- sealing
- transverse
- groove
- plug valve
- rotary column
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- 238000005553 drilling Methods 0.000 title claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 108
- 239000003208 petroleum Substances 0.000 abstract description 2
- 238000012856 packing Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 244000309464 bull Species 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000003211 malignant effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/06—Sleeve valves
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Multiple-Way Valves (AREA)
- Valve Housings (AREA)
Abstract
The invention relates to the field of petroleum drilling equipment and discloses a kelly bar plug valve for an offshore oilfield drilling, which comprises a pipe body, wherein a transverse through groove communicated with the inner cavity of the pipe body is formed in the pipe body, an outer sealing sleeve is movably sleeved in the transverse through groove, an inner sealing rotary column is sleeved on an inner bearing of the outer sealing sleeve, a middle through hole positioned at the inner cavity of the middle part of the pipe body is formed in the inner sealing rotary column, a linkage rotary rod is arranged on one side of the transverse through groove, and the linkage rotary rod can drive the inner sealing rotary column to rotate. The marine oilfield drill adopts the kelly bar plug valve, a transverse through groove communicated with an inner groove at the middle part of the tubular body is formed in the tubular body, and the structural design of an outer sealing sleeve and an inner sealing rotary column is arranged in the transverse through groove.
Description
Technical Field
The invention relates to the field of petroleum drilling equipment, in particular to a kelly plug valve for offshore oilfield drilling.
Background
The kelly plug valve is a common blowout-preventing tool, in order to avoid the occurrence of blowout malignant accidents in drilling operation, the upper end and the lower end of the kelly plug valve are assembled, the inner part of the existing kelly plug valve is provided with a valve ball, a valve seat, an inner layer ring and other structures, the kelly plug valve is rotated by 90 degrees by a special spanner according to indication requirements, the inner ball valve is rotated, and the opening or closing of the kelly plug valve can be realized.
However, when the existing kelly bar plug valve is opened or closed under the action of high pressure in a well, when the rotating shaft is rotated, the spherical valve core is difficult to rotate due to large friction force generated by huge pressure difference, so that the plug valve is difficult to open or close, the friction loss degree of the sealing part of the plug valve is large when the plug valve rotates under high pressure, the service life is low, when the plug valve is used in a high-abrasion environment, a valve ball is required to be frequently replaced, and the ball valve, a valve seat and an inner ring are required to be taken out through a tool, so that the repairing and replacing efficiency is low, and when the valve ball is not repaired or replaced, the opening and the closing can not be controlled, so that accidents are easy to occur.
Disclosure of Invention
The invention provides a kelly bar plug valve for an offshore oilfield drill, which has the advantages of convenience in opening and closing, long service life, convenience in replacing an internal sealing element and capability of effectively controlling the opening and closing of the plug valve during replacement, and solves the technical problems in the background art.
In order to achieve the above object, the present invention provides the following technical solutions: the utility model provides an ocean oilfield bores and adopts kelly plug valve, includes the body, the inside of body has been seted up and has been put through the horizontal logical groove of its middle part inner chamber, horizontal logical inslot activity cover is equipped with outer packing sleeve pipe, and outer packing sleeve pipe's inside bearing housing is equipped with interior packing swivel post, has seted up the middle through-hole that is located body middle part inner chamber department on the interior packing swivel post, and one side of horizontal logical groove is equipped with the linkage bull stick, and the linkage bull stick can drive interior packing swivel post rotation, the outside of interior packing swivel post is equipped with round sealing rubber ring with outer packing sleeve pipe's inner wall laminating department, and sealing rubber ring covers the both sides drill way of middle through-hole completely.
Optionally, the both ends of horizontal logical groove are equipped with location side closing cap and regulation side closing cap respectively thread bush, the movable cover of linkage bull stick is on adjusting the side closing cap, and the one end of linkage bull stick and the one side activity joint of interior seal swivel post, the other end fixedly connected with of linkage bull stick is located the second auxiliary rotating shaft in the regulation side closing cap outside, the outside of adjusting the side closing cap is equipped with first auxiliary rotating shaft.
Optionally, one side of interior seal swivel post far away from the linkage bull stick fixedly connected with draws the axle, draws the notch department that the groove was led to the horizontal one end of axle to extend, and draws the one end of axle and the side of location side closing cap contactless.
Optionally, the inner ring of the bearing is fixedly sleeved on the inner sealing rotating column, and the outer ring of the bearing is movably attached to the inner wall of the outer sealing sleeve.
The invention provides a kelly bar plug valve for an offshore oilfield drilling, which has the following beneficial effects:
1. the marine oilfield drill adopts the kelly bar plug valve, the transverse through groove communicated with the middle inner groove is formed in the pipe body, the outer sealing sleeve and the inner sealing rotary column are arranged in the transverse through groove, when the kelly bar plug valve is controlled to be opened or closed, the bearing is always utilized to bear pressure, an operator can conveniently open or close the kelly bar plug valve, when sudden conditions such as blowout or kick occur, the operator can conveniently and rapidly close the kelly bar plug valve, the risk of accidents is reduced, and when the inner sealing rotary column is controlled to rotate under the action of high pressure to open or close the kelly valve, the problem that the sealing rubber ring on the inner sealing rotary column and the inner wall of the outer sealing sleeve are rapidly worn under the action of large friction force is effectively avoided, so that the service life of the kelly bar plug valve is prolonged, the trouble of frequently replacing the kelly bar plug valve is avoided, and offshore oil well operation is facilitated.
2. This ocean oilfield bores adopts kelly plug valve, through transversely leading to the structural design that sets up outer sleeve pipe, interior seal swivel post in the inslot, after using for a long time, when the sealed rubber ring need be changed after wearing and tearing consumption, only through taking out interior seal swivel post from one side of outer sleeve pipe, to the sealed rubber ring change can, effectually avoided current kelly plug valve to adopt the structural design of valve ball, need retrieve ball valve through the instrument when repairing or changing damaged kelly plug valve, disk seat and inlayer ring, result in repairing and change inefficiency, and can't control to open when repairing or changing the valve ball, the problem of easily appearing the accident.
Drawings
FIG. 1 is a schematic view of a cut-away construction of a kelly plug valve of the present invention in a closed position;
FIG. 2 is a schematic view of the open state of the kelly plug valve of the present invention in cross-section;
FIG. 3 is a schematic view of the outer jacket tube of the structure of FIG. 1 in accordance with the present invention;
FIG. 4 is a schematic view of the outer jacket tube of the structure of FIG. 2 in accordance with the present invention;
fig. 5 is a schematic view of the structural inner seal rotating column of fig. 1 according to the present invention.
In the figure: 1. a tube body; 101. positioning a side sealing cover; 102. adjusting the side seal cover; 103. a first auxiliary rotating shaft; 2. an outer sealing sleeve; 201. a middle through port; 3. an inner seal rotating column; 301. a middle through hole; 302. pulling a shaft; 303. sealing rubber rings; 4. a linkage rotating rod; 401. and a second auxiliary rotating shaft.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-5, an ocean oilfield drilling adopts a kelly plug valve, which comprises a pipe body 1, the middle part of the pipe body 1 is provided with a transverse through groove communicated with the inner cavity of the middle part, two ends of the transverse through groove are respectively provided with a positioning side sealing cover 101 and an adjusting side sealing cover 102 in a threaded sleeved mode, an outer sealing sleeve 2 is movably sleeved in the transverse through groove, the outer side of the outer sealing sleeve 2 is movably attached to the inner wall of the transverse through groove, one end of the outer sealing sleeve 2 is fixedly connected with one end of the adjusting side sealing cover 102, the other end of the outer sealing sleeve 2 is movably connected with one side of the positioning side sealing cover 101, an inner sealing rotating column 3 is sleeved in a middle bearing of the inner cavity of the outer sealing sleeve 2, a circle of sealing rubber ring 303 is arranged at the attachment position of the outer side of the inner sealing column 3 and the inner wall of the outer sealing sleeve 2, the sealing rubber ring 303 completely covers two side openings of the middle through hole 301, the middle through hole 301 is formed in the middle part of the inner sealing column 3, two sides of the outer sealing sleeve 2 are respectively provided with middle through holes 201 positioned at the middle through holes 301, the middle part of the adjusting side sealing cover 102 is movably sleeved with a rotating rod 4, one end of the rotating rod 4 and one end of the inner sealing sleeve 4 is fixedly connected with one end of the adjusting side sealing cover 102, one end of the inner sealing rod 4 and one side of the inner sealing cover 3 is movably clamped with one side of the other end of the inner sealing cover 4, the other end of the rotating shaft 4 is rotatably connected with the other end of the other sealing cover 4, and the other end 4 is provided with the other end, and the other end of the other end sealing cover 4 is rotatably, and can be connected with the other end, and the other end and 4, and can be correspondingly, and can well.
Under normal operating condition, two middle through openings 201 on the outer sealing sleeve 2 are located at the upper side and the lower side of the inner sealing rotary column 3, the inner sealing rotary column 3 of the outer sealing sleeve 2 is driven to rotate ninety degrees through a linkage rotary rod 4, so that the middle through opening 301 is in a vertical state, the space at the upper side and the lower side of the outer sealing sleeve 2 is communicated, the opening of the plug valve is completed, the inner sealing rotary column 3 of the inner sealing sleeve 2 is driven to reversely rotate ninety degrees through the linkage rotary rod 4, the space at the upper side and the lower side of the middle through opening 301 and the outer sealing sleeve 2 are misplaced, the plug is closed, in the whole process, the upward or downward pressure from the inside of a well to the inner sealing rotary column 3 is balanced by bearings, and therefore, when the plug valve is opened or closed by an operator in an emergency such as blowout or a well, the risk is reduced, when the inner sealing rotary column 3 is controlled to rotate under the high pressure, the trouble of opening or closing the plug valve is effectively avoided, the inner sealing rotary column 3 and the inner wall of the plug valve 2 is prevented from being worn down by the operator, the problem of frequent replacement of the plug valve is avoided, and frequent abrasion of the plug valve is avoided.
One side of the inner sealing rotating column 3 far away from the linkage rotating rod 4 is fixedly connected with a pull shaft 302, one end of the pull shaft 302 extends to a notch of the transverse through groove, and one end of the pull shaft 302 is not contacted with the side face of the positioning side sealing cover 101.
After long-time use, when the sealing rubber ring 303 needs to be replaced after abrasion consumption, the outer sealing sleeve 2 is driven to rotate by controlling the adjusting side sealing cover 102, so that the middle through hole 201 and the middle inner cavity of the pipe body 1 are in dislocation, the positioning side sealing cover 101 is opened from one side of the pipe body 1, the inner sealing rotary column 3 is extracted through the pull shaft 302, the sealing rubber ring 303 on the outer side of the inner sealing rotary column 3 is replaced, after the replacement is finished, the inner sealing rotary column 3 is reinserted into the transverse through groove, one side of the inner sealing rotary column 3 is movably clamped with one end of the linkage rotary rod 4, at the moment, the middle through hole 301 is exactly located at the middle inner cavity of the pipe body 1, and the adjusting side sealing cover 102 is controlled to reversely rotate, so that the two adjusting side sealing covers 102 on the outer sealing sleeve 2 are connected with the middle inner cavity of the pipe body 1, the sealing rubber ring 303 is conveniently replaced, the existing square plug valve is effectively avoided, the damaged square plug valve is repaired or replaced by adopting the structural design of a valve ball, the tool is needed to be replaced, the ball valve and the valve seat are easily repaired or replaced, and the valve is not easy to open and the valve is easy to repair or shut down when the valve is low in efficiency or can not be controlled to open and shut.
The inner ring of the bearing is fixedly sleeved on the inner sealing rotary column 3, the outer ring of the bearing is movably attached to the inner wall of the outer sealing sleeve 2, and the inner sealing rotary column 3 is conveniently taken out of the outer sealing sleeve 2 so as to replace the sealing rubber ring 303 on the inner sealing rotary column 3.
When the plug valve is required to be opened, the linkage rotating rod 4 is driven to rotate ninety degrees through the second auxiliary rotating shaft 401, the linkage rotating rod 4 drives the inner sealing rotating column 3 to rotate ninety degrees until the middle through hole 301 is communicated with the middle inner cavity in the pipe body 1, so that the plug valve is opened, when the plug valve is required to be closed, the linkage rotating rod 4 is driven to reversely rotate ninety degrees through the second auxiliary rotating shaft 401, until the middle through hole 301 is in a dislocation state with the middle inner cavity in the pipe body 1, the sealing rubber ring 303 on the inner sealing rotating column 3 is utilized for lamination and sealing, and the plug valve is closed.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. The utility model provides an ocean oil field bores adopts kelly plug valve, includes body (1), its characterized in that: the inner part of the pipe body (1) is provided with a transverse through groove communicated with the middle inner cavity of the pipe body, an outer sealing sleeve (2) is movably sleeved in the transverse through groove, an inner sealing rotary column (3) is sleeved on an inner bearing of the outer sealing sleeve (2), the inner sealing rotary column (3) is provided with a middle through hole (301) positioned at the middle inner cavity of the pipe body (1), one side of the transverse through groove is provided with a linkage rotary rod (4), the linkage rotary rod (4) can drive the inner sealing rotary column (3) to rotate, a circle of sealing rubber ring (303) is arranged at the joint of the outer side of the inner sealing rotary column (3) and the inner wall of the outer sealing sleeve (2), and the sealing rubber ring (303) completely covers two side orifices of the middle through hole (301);
the two ends of the transverse through groove are respectively sheathed with a positioning side sealing cover (101) and an adjusting side sealing cover (102) in a threaded manner, the linkage rotating rod (4) is movably sheathed on the adjusting side sealing cover (102), one end of the linkage rotating rod (4) is movably clamped with the inner sealing rotating column (3), the other end of the linkage rotating rod (4) is fixedly connected with a second auxiliary rotating shaft (401) positioned at the outer side of the adjusting side sealing cover (102), and the outer side of the adjusting side sealing cover (102) is provided with a first auxiliary rotating shaft (103);
the inner ring of the bearing is fixedly sleeved on the inner sealing rotating column (3), and the outer ring of the bearing is movably attached to the inner wall of the outer sealing sleeve (2);
the two sides of the outer sealing sleeve (2) are provided with middle through holes (201) positioned at the middle through holes (301), the outer sealing sleeve (2) is driven to rotate by controlling and adjusting the side sealing cover (102), the middle through holes (201) are sealed with the middle inner cavity of the pipe body (1) in a staggered mode, the positioning side sealing cover (101) is opened from one side of the pipe body (1), the inner sealing rotary column (3) is pulled out through the pull shaft (302), and the sealing rubber ring (303) on the outer side of the inner sealing rotary column (3) is replaced.
2. The marine oilfield drilling kelly plug valve of claim 1, wherein: one side of the inner sealing rotating column (3) far away from the linkage rotating rod (4) is fixedly connected with a pull shaft (302), one end of the pull shaft (302) extends to a notch of the transverse through groove, and one end of the pull shaft (302) is not contacted with the side face of the positioning side sealing cover (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110856311.8A CN113503142B (en) | 2021-07-28 | 2021-07-28 | Kelly bar plug valve for offshore oilfield drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110856311.8A CN113503142B (en) | 2021-07-28 | 2021-07-28 | Kelly bar plug valve for offshore oilfield drilling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113503142A CN113503142A (en) | 2021-10-15 |
| CN113503142B true CN113503142B (en) | 2023-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110856311.8A Active CN113503142B (en) | 2021-07-28 | 2021-07-28 | Kelly bar plug valve for offshore oilfield drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113503142B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1185951A (en) * | 1980-01-08 | 1985-04-23 | Michael J. Sandling | Rotary plug valve |
| CN1936393A (en) * | 2006-10-14 | 2007-03-28 | 青岛大学 | Ceramic-pipe type rotary plug valve and mfg. process |
| CN201218330Y (en) * | 2008-06-20 | 2009-04-08 | 周现华 | Valve with easily replaced valve core and sealing ring, and double-valve control valve composed of common valve and the same |
| CN102071910A (en) * | 2009-11-19 | 2011-05-25 | 李新利 | Low-torque kelly cock valve |
| CN104481437A (en) * | 2014-12-15 | 2015-04-01 | 广汉川油井控装备有限公司 | Under-pressure low-torque square drill rod plug valve |
| CN210800114U (en) * | 2019-10-22 | 2020-06-19 | 厦门盈硕科智能装备有限公司 | Lifting plug valve |
-
2021
- 2021-07-28 CN CN202110856311.8A patent/CN113503142B/en active Active
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| Publication number | Publication date |
|---|---|
| CN113503142A (en) | 2021-10-15 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20230417 Address after: No. 1 Linhai Road, Aimin District, Mudanjiang City, Heilongjiang Province, 157000 Applicant after: MUDANJIANG LINHAI PETROLEUM FISHING TOOL Co.,Ltd. Address before: 510000 No. 7, Maoshan Liujia street, Baiyun District, Guangzhou, Guangdong Applicant before: Liu Wanjun |
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