CN105840140A - Anti-corrosion diversion structure - Google Patents
Anti-corrosion diversion structure Download PDFInfo
- Publication number
- CN105840140A CN105840140A CN201610371594.6A CN201610371594A CN105840140A CN 105840140 A CN105840140 A CN 105840140A CN 201610371594 A CN201610371594 A CN 201610371594A CN 105840140 A CN105840140 A CN 105840140A
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- Prior art keywords
- spheroid
- inlet opening
- ball base
- connecting shaft
- sleeve
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- 238000005260 corrosion Methods 0.000 title abstract description 4
- 230000000670 limiting effect Effects 0.000 claims description 24
- 230000002265 prevention Effects 0.000 claims description 6
- 238000007363 ring formation reaction Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract 6
- 230000001174 ascending effect Effects 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 47
- 238000005553 drilling Methods 0.000 description 21
- 239000012530 fluid Substances 0.000 description 15
- 230000002159 abnormal effect Effects 0.000 description 13
- 230000015572 biosynthetic process Effects 0.000 description 10
- 238000005755 formation reaction Methods 0.000 description 10
- 239000004215 Carbon black (E152) Substances 0.000 description 8
- 229930195733 hydrocarbon Natural products 0.000 description 8
- 150000002430 hydrocarbons Chemical class 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000010009 beating Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000036772 blood pressure Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000002343 natural gas well Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- 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
- E21B34/02—Valve arrangements for boreholes or wells in well heads
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
-
- 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
- E21B2200/04—Ball valves
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (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)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses an anti-corrosion diversion structure which comprises a body, a support plate, a spherical body and an upper spherical base, wherein a liquid inlet is formed in the body; the support plate is fixed at the lower part of the liquid inlet; the upper spherical base is fixed at the upper part of the liquid inlet and the interior of the upper spherical base is communicated with the liquid inlet; the middle of the support plate is provided with a support shaft; a spring sleeves the support shaft; the support plate is provided with multiplea plurality of small holes; the top end of the spring is provided with a limit plate; a clearance gag gap is reserved between the bottom of the limit plate and the top end of the support shaft; a lower spherical base is fixed to the limit plate; the middle of the spherical body is provided with a through hole communicated with the liquid inlet; a connecting shaft is rotatably arranged in a sleeve; the end part of the connecting shaft is connected with the upper part of the spherical body. The communication section size of the liquid inlet is adjusted by virtue of an adjustment mechanism, ascending oil gas is blocked, so that an extensification of a wellhead overflow or well kick accident caused by oil gas ascending is prevented, and the occurrence of well control maladjustment is avoided.
Description
Technical field
The present invention relates to natural gas extraction field, be specifically related to a kind of anticorrosion flow-guiding structure.
Background technology
When the drilling construction operation of natural gas well exploitation, formation fluid (oil gas and water) inevitably enters pit shaft, generally, enters the formation fluid in pit shaft by weighted mud being pressed in well by kill manifold.When creeping into chance abnormal pressure hydrocarbon formations, the gas stream on high-pressure oil gas stratum is altered under pressure and drives mud to converge together to well head, alter in gas stream and cause Drilling Troubles, the lighter causes well head overflow or well kick, severe one can cause well control out of control, it is generally the case that easily causes gas blowout accident, and the kill-job operation of high-pressure oil-gas layer is difficult to carry out, upset being normally carried out of drilling well production operation.
Summary of the invention
Present invention aim at providing a kind of anticorrosion flow-guiding structure, solve to exist when boring and meeting abnormal pressure hydrocarbon formations in prior art easily causes blowout and is difficult to carry out the problem of kill-job operation of high-pressure oil-gas layer.
The present invention is achieved through the following technical solutions:
A kind of anticorrosion flow-guiding structure, including body, gripper shoe, spheroid and upper ball base, inlet opening is had in described body interior, described gripper shoe is fixed on the bottom of inlet opening, upper ball base is fixed on inlet opening top and its inside and connects with inlet opening, support shaft it is provided with in the middle part of gripper shoe, spring housing is located in support shaft, have multiple aperture on the supporting plate, the top of spring is provided with limiting plate, and leave gap with support shaft top bottom limiting plate, described support shaft upper end arranges resilient cone, limiting plate bottom surface is embedded with just block rubber to cone, lower ball base is fixed on limiting plate, a spherical blowout prevention cavity is formed between described upper ball base and lower ball base, spheroid rotates and is arranged in described blowout prevention cavity, and in the middle part of described spheroid, have the through hole connected with inlet opening；Also include governor motion, described governor motion includes sleeve and the connecting shaft running through this body sidewall, described connecting shaft rotates and is arranged in sleeve, described connecting shaft one end is connected with spheroid top, the connecting shaft other end extends radially outwardly along body, sleeve is provided with the pod apertures that axis is parallel with connecting shaft axis, the two ends of pod apertures are respectively at inlet opening and extraneous connection, this body sidewall is provided with cannelure, and sleeve is divided into two parts by described cannelure, connecting shaft is provided with block, described block is slidably arranged in cannelure, under initial operating mode, described block will completely cut off with its two ends in the middle part of pod apertures.For in prior art, when creeping into chance abnormal pressure hydrocarbon formations, the gas stream on high-pressure oil gas stratum is altered under pressure and drives mud to converge together to well head, alter in gas stream and cause Drilling Troubles, the lighter causes well head overflow or well kick, severe one can cause well control out of control, under normal circumstances, easily cause gas blowout accident, inventor is by arranging blowout hookup at well head, by governor motion, inlet opening is connected the regulation of cross-sectional sizes, the oil gas altered is blocked, i.e. hinder and alter in gas stream continuation, prevent from gas stream, altering the well head overflow caused or the extension of well kick accident, avoid the generation of well control imbalance, reduce the probability of happening of blowout, to reduce the impact on the progress of creeping into of the drilling process mesohigh oil gas.
Concrete operations are as follows, when running into abnormal pressure hydrocarbon formations, by being rotationally connected the axle extension in body exterior, make the rotation of spheroid generation certain angle, and now through hole in the middle part of spheroid mutually completely cuts off with inlet opening, i.e. between upper ball base and spheroid, the circulation road of body interior is blocked, on the gas stream altered be blocked in below spheroid, drilling fluid is now injected to inlet opening upper end, spheroid top is by after the impact of drilling fluid, start to move down, gap is there will be between spheroid and upper ball base, drilling fluid is then flowed into the hypomere of inlet opening by this gap location, enter in well finally by the multiple apertures in gripper shoe to be circulated kill-job operation, and then ensure being normally carried out of drilling well production operation.When running into the hydrocarbon formations of abnormal pressure, the dynamics that is hit of spheroid and upper ball base is excessive, easily cause damage, therefore on the sidewall of body, offer pod apertures, in time down-hole is carried out blood pressure lowering, and under initial operating mode, this pod apertures is blocked by block all the time, i.e. inlet opening cannot be connected with the external world by pod apertures, and when down-hole pressure reaches a marginal value, need spheroid that inlet opening is insulated, now it is rotationally connected axle, while spheroid is rotated, block is driven to rotate in cannelure, until pod apertures is no longer influenced by limiting and being directly in communication with the outside, and this kind of mode of communicating is not to drain in air by directly outer for oil gas, but by special container, this oil gas is collected；By the spheroid packing to inlet opening upper end, simultaneously by the pod apertures pressure release to inlet opening sidewall so that in the case of abnormal pressure occurs in down-hole, it is ensured that each parts of body interior are injury-free.
nullAnd when spheroid moves down，Make lower ball base drive limiting plate to take advantage of a situation to draw close to support shaft，Now spring is compressed，Owing to the drilling fluid momentum when being injected into fluid apertures can not be too high，To avoid the excesssive gap produced between the moment upper ball base injected is with spheroid to cause altering on oil gas ejection，It can thus be appreciated that，Relatively small with the coefficient of elasticity injecting the spring that mud flow rate matches，It is highly prone to damage the most in use and causes the spheroid seal failure to inlet opening，The present invention embeds block rubber bottom limiting plate，The resilient cone of tool is set on the top of support shaft simultaneously，When limiting plate moves down，First cone contacts with block rubber，Deformation is produced by contacting between block rubber with cone，With secondary spring to spheroid、Impact forces suffered by lower ball base and limiting plate，And then it is substantially reduced the stand under load intensity of spring，Make to realize between the efficiency altered on oil gas under the injection progress of drilling fluid and spheroid barrierwell balance，Improve the protection of each parts to body interior to the full extent.
Also include baffle ring and closed, by left ring body, right ring body, the limited block that cyclization is constituted, baffle ring is connected to the middle part of limited block, described upper ball base upper surface is provided with stair-stepping contact surface, and described limited block lower surface and baffle ring lower surface are connected with described contact surface respectively.On the oil gas altered be applied directly on spheroid outer wall, make spheroid by an applied stress vertically upward, same spheroid can form certain impact to upper ball base, and once there is beating along body axis direction in spheroid, the connecting shaft being connected with spheroid can distort and occur stress impaired, therefore limited block and baffle ring are set on inlet opening top, upper ball base can be carried out two grades of reinforcings, upper ball base is avoided to loosen in this internal appearance and extend spheroid and move upward and the displacement that produces, it is ensured that spheroid keeps stable duty in the Oil/gas Well of abnormal pressure.
Being provided with the supporting positive cover being connected with inlet opening inwall in described gripper shoe, end, described supporting positive cover upper end extends upwardly to the middle part of spheroid.When the rotation that spheroid is carried out by the constantly impact of gas stream, utilize the supporting positive cover restriction to spheroid outer wall, to maintain spheroid to do the circular motion of rule around its junction point with connecting shaft, prevent spheroid generation circular runout, it is ensured that spheroid and the stability of upper ball base.
Described sleeve lining is additionally provided with O RunddichtringO.As preferably, one end of connecting shaft is connected with spheroid, and its other end stretches out after running through sleeve, and the O RunddichtringO increased on sleeve lining can improve the air-tightness of body self, improves spheroid in the isolation effect to the gas stream altered on down-hole.
The present invention compared with prior art, has such advantages as and beneficial effect:
1, the present invention connects the regulation of cross-sectional sizes by governor motion to inlet opening, the oil gas altered is blocked, i.e. hinder and alter in gas stream continuation, prevent from gas stream, altering the well head overflow caused or the extension of well kick accident, avoid the generation of well control imbalance, reduce the probability of happening of blowout, to reduce the impact on the progress of creeping into of the drilling process mesohigh oil gas；
2, the present invention produces deformation by contacting between block rubber with cone; with secondary spring to spheroid, lower ball base and the impact forces suffered by limiting plate; and then it is substantially reduced the stand under load intensity of spring; make to realize between the efficiency altered on oil gas under the injection progress of drilling fluid and spheroid barrierwell balance, improve the protection of each parts to body interior to the full extent；
3, the present invention arranges limited block and baffle ring on inlet opening top, upper ball base can be carried out two grades of reinforcings, upper ball base is avoided to loosen in this internal appearance and extend spheroid and move upward and the displacement that produces, it is ensured that spheroid keeps stable duty in the Oil/gas Well of abnormal pressure.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by the embodiment of the present invention, constitutes the part of the application, is not intended that the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of governor motion；
Fig. 3 be limiting plate with support shaft coordinate figure.
The parts title of labelling and correspondence in accompanying drawing:
The left ring body of 1-body, 2-, 3-inlet opening, 4-through hole, 5-spheroid, 6-lower ball base, 7-spring, 8-support shaft, 9-gripper shoe, 10-aperture, 11-baffle ring, the right ring body of 12-, 13-upper ball base, 14-governor motion, 141-sleeve, 142-connecting shaft, 143-pod apertures, 144-block, 145-cannelure, 15-supporting positive cover, 16-limiting plate, 17-block rubber, 18-cone.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, and the exemplary embodiment of the present invention and explanation thereof are only used for explaining the present invention, not as a limitation of the invention.
Embodiment 1
nullAs shown in Fig. 1 ~ 3，The present embodiment includes body 1、Gripper shoe 9、Spheroid 5 and upper ball base 13，Inlet opening 3 is had inside described body 1，Described gripper shoe 9 is fixed on the bottom of inlet opening 3，Upper ball base 13 is fixed on inlet opening 3 top and its inside and connects with inlet opening 3，Support shaft 8 it is provided with in the middle part of gripper shoe 9，Spring 7 is set in support shaft 8，Gripper shoe 9 has multiple aperture 10，The top of spring 7 is provided with limiting plate 16，And leave gap with support shaft 8 top bottom limiting plate 16，Described support shaft 8 upper end arranges resilient cone 18，Limiting plate 16 bottom surface is embedded with just block rubber 17 to cone 18，Lower ball base 6 is fixed on limiting plate 16，A spherical blowout prevention cavity is formed between described upper ball base 13 and lower ball base 6，Spheroid 5 rotates and is arranged in described blowout prevention cavity，And in the middle part of described spheroid 5, have the through hole 4 connected with inlet opening 3；nullAlso include governor motion 14，Described governor motion 14 includes sleeve 141 and the connecting shaft 142 running through body 1 sidewall，Described connecting shaft 142 rotates and is arranged in sleeve 141，Described connecting shaft 142 one end is connected with spheroid 5 top，Connecting shaft 142 other end extends radially outwardly along body 1，Sleeve 141 is provided with the pod apertures 143 that axis is parallel with connecting shaft 142 axis，The two ends of pod apertures 143 are respectively at inlet opening 3 and extraneous connection，Body 1 sidewall is provided with cannelure 145，And sleeve 141 is divided into two parts by described cannelure 145，Connecting shaft 142 is provided with block 144，Described block 144 is slidably arranged in cannelure 145，Under initial operating mode，Described block 144 will completely cut off with its two ends in the middle part of pod apertures 143.
For in prior art, when creeping into chance abnormal pressure hydrocarbon formations, the gas stream on high-pressure oil gas stratum is altered under pressure and drives mud to converge together to well head, alter in gas stream and cause Drilling Troubles, the lighter causes well head overflow or well kick, severe one can cause well control out of control, under normal circumstances, easily cause gas blowout accident, inventor is by arranging blowout hookup at well head, by the governor motion 14 regulation to the connection cross-sectional sizes of inlet opening 3, the oil gas altered is blocked, i.e. hinder and alter in gas stream continuation, prevent from gas stream, altering the well head overflow caused or the extension of well kick accident, avoid the generation of well control imbalance, reduce the probability of happening of blowout, to reduce the impact on the progress of creeping into of the drilling process mesohigh oil gas.
Concrete operations are as follows, when running into abnormal pressure hydrocarbon formations, by being rotationally connected axle 142 in the extension outside body 1, make spheroid 5 that the rotation of certain angle occur, and now through hole 4 in the middle part of spheroid 5 mutually completely cuts off with inlet opening 3, i.e. between upper ball base 13 and spheroid 5, the circulation road within body 1 is blocked, on the gas stream altered be blocked in below spheroid 5, drilling fluid is now injected to inlet opening 3 upper end, spheroid 5 top is by after the impact of drilling fluid, start to move down, gap is there will be between spheroid 5 and upper ball base 13, drilling fluid is then flowed into the hypomere of inlet opening 3 by this gap location, enter in well finally by the multiple apertures 10 in gripper shoe 9 to be circulated kill-job operation, and then ensure being normally carried out of drilling well production operation.When running into the hydrocarbon formations of abnormal pressure, the dynamics that is hit of spheroid 5 and upper ball base 13 is excessive, easily cause damage, therefore on the sidewall of body 1, offer pod apertures 143, in time down-hole is carried out blood pressure lowering, and under initial operating mode, this pod apertures 143 is blocked by block 144 all the time, i.e. inlet opening 3 cannot be connected with the external world by pod apertures 143, and when down-hole pressure reaches a marginal value, need spheroid 5 that the carrying out of inlet opening 3 is insulated, now it is rotationally connected axle 143, while spheroid 5 is rotated, block 144 is driven to rotate in cannelure 145, until pod apertures 143 is no longer influenced by limiting and being directly in communication with the outside, and this kind of mode of communicating is not to drain in air by directly outer for oil gas, but by special container, this oil gas is collected；By the spheroid 5 packing to inlet opening 3 upper end, simultaneously by the pod apertures 143 pressure release to inlet opening 3 sidewall so that in the case of abnormal pressure occurs in down-hole, it is ensured that each parts within body 1 are injury-free.
nullAnd when spheroid 5 moves down，Make lower ball base 6 drive limiting plate 16 to take advantage of a situation to support shaft 8 to draw close，Now spring 7 is compressed，Owing to the drilling fluid momentum when being injected into fluid apertures 3 can not be too high，To avoid the excesssive gap produced between the moment upper ball base 13 injected is with spheroid 5 to cause altering on oil gas ejection，It can thus be appreciated that，Relatively small with the coefficient of elasticity injecting the spring 7 that mud flow rate matches，It is highly prone to damage the most in use and causes the spheroid 5 seal failure to inlet opening 3，The present embodiment embeds block rubber 17 bottom limiting plate 16，The resilient cone 18 of tool is set on the top of support shaft 8 simultaneously，When limiting plate 16 moves down，First cone 18 contacts with block rubber 17，Deformation is produced by contacting between block rubber 17 with cone 18，With secondary spring 7 to spheroid 5、Impact forces suffered by lower ball base 6 and limiting plate 16，And then it is substantially reduced the stand under load intensity of spring 7，Make to realize between the efficiency altered on oil gas under the injection progress of drilling fluid and spheroid 5 barrierwell balance，Improve the protection to each parts within body 1 to the full extent.
The present embodiment also includes baffle ring 11 and is closed, by left ring body 2, right ring body 12, the limited block that cyclization is constituted, baffle ring 11 is connected to the middle part of limited block, described upper ball base 13 upper surface is provided with stair-stepping contact surface, described limited block lower surface and baffle ring 11 lower surface and is connected with described contact surface respectively.On the oil gas altered be applied directly on spheroid 5 outer wall, make spheroid 5 by an applied stress vertically upward, same spheroid 5 can form certain impact to upper ball base 13, and once there is beating along body 1 axis direction in spheroid 5, the connecting shaft 142 being connected with spheroid 5 can distort and occur stress impaired, therefore limited block and baffle ring 11 are set on inlet opening 3 top, upper ball base 13 can be carried out two grades of reinforcings, upper ball base 13 is avoided to occur loosening and extending spheroid 5 and move upward and the displacement that produces in body 1, ensure that spheroid 5 keeps stable duty in the Oil/gas Well of abnormal pressure.
Wherein, being provided with the supporting positive cover 15 being connected with inlet opening 3 inwall in described gripper shoe 9, end, described supporting positive cover 15 upper end extends upwardly to the middle part of spheroid 5.When the rotation that spheroid 5 is carried out by the constantly impact of gas stream, utilize the supporting positive cover 15 restriction to spheroid 5 outer wall, to maintain spheroid 5 to do the circular motion of rule around its junction point with connecting shaft 142, prevent spheroid 5 from circular runout occurring, it is ensured that spheroid 5 and the stability of upper ball base 13.
As preferably, one end of connecting shaft 142 is connected with spheroid 5, its other end stretches out after running through sleeve 141, and the O RunddichtringO increased on sleeve 141 inwall can improve the air-tightness of body 1 self, improves spheroid 5 in the isolation effect to the gas stream altered on down-hole.Further, the present embodiment also can brush one layer of corrosion-inhibiting coating on inlet opening 3, aperture 10 and through hole 4 inwall, to reduce cavitation erosion or the corrosion phenomenon of hole inwall, extends its service life.
Above-described detailed description of the invention; the purpose of the present invention, technical scheme and beneficial effect are further described; it is it should be understood that; the foregoing is only the detailed description of the invention of the present invention; the protection domain being not intended to limit the present invention; all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, should be included within the scope of the present invention.
Claims (4)
- null1. an anticorrosion flow-guiding structure，Including body (1)、Gripper shoe (9)、Spheroid (5) and upper ball base (13)，Inlet opening (3) is had in described body (1) inside，It is characterized in that: described gripper shoe (9) is fixed on the bottom of inlet opening (3)，Upper ball base (13) is fixed on inlet opening (3) top and its inside and connects with inlet opening (3)，Gripper shoe (9) middle part is provided with support shaft (8)，Spring (7) is set in support shaft (8)，Gripper shoe (9) has multiple aperture (10)，The top of spring (7) is provided with limiting plate (16)，And leave gap with support shaft (8) top bottom limiting plate (16)，Described support shaft (8) upper end arranges resilient cone (18)，Limiting plate (16) bottom surface is embedded with just block rubber (17) to cone (18)，Lower ball base (6) is fixed on limiting plate (16)，A spherical blowout prevention cavity is formed between described upper ball base (13) and lower ball base (6)，Spheroid (5) rotates and is arranged in described blowout prevention cavity，And have, at described spheroid (5) middle part, the through hole (4) connected with inlet opening (3)；nullAlso include governor motion (14)，Described governor motion (14) includes sleeve (141) and the connecting shaft (142) running through body (1) sidewall，Described connecting shaft (142) rotates and is arranged in sleeve (141)，Described connecting shaft (142) one end is connected with spheroid (5) top，Connecting shaft (142) other end extends radially outwardly along body (1)，Sleeve (141) is provided with the pod apertures (143) that axis is parallel with connecting shaft (142) axis，The two ends of pod apertures (143) are respectively at inlet opening (3) and extraneous connection，Body (1) sidewall is provided with cannelure (145)，And sleeve (141) is divided into two parts by described cannelure (145)，Connecting shaft (142) is provided with block (144)，Described block (144) is slidably arranged in cannelure (145)，Under initial operating mode，Pod apertures (143) middle part is completely cut off by described block (144) with its two ends.
- A kind of anticorrosion flow-guiding structure the most according to claim 1, it is characterized in that: also include baffle ring (11) and closed, by left ring body (2), right ring body (12), the limited block that cyclization is constituted, baffle ring (11) is connected to the middle part of limited block, described upper ball base (13) upper surface is provided with stair-stepping contact surface, described limited block lower surface and baffle ring (11) lower surface and is connected with described contact surface respectively.
- A kind of anticorrosion flow-guiding structure the most according to claim 1, it is characterized in that: be provided with the supporting positive cover (15) being connected with inlet opening (3) inwall in described gripper shoe (9), described supporting positive cover (15) end, upper end extends upwardly to the middle part of spheroid (5).
- A kind of anticorrosion flow-guiding structure the most according to claim 1, it is characterised in that: on described sleeve (141) inwall, it is additionally provided with O RunddichtringO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610371594.6A CN105840140A (en) | 2016-05-31 | 2016-05-31 | Anti-corrosion diversion structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610371594.6A CN105840140A (en) | 2016-05-31 | 2016-05-31 | Anti-corrosion diversion structure |
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| CN105840140A true CN105840140A (en) | 2016-08-10 |
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| CN201610371594.6A Pending CN105840140A (en) | 2016-05-31 | 2016-05-31 | Anti-corrosion diversion structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107558945A (en) * | 2017-10-27 | 2018-01-09 | 成都瞬科仪器仪表有限公司 | A kind of natural gas well anti-corrosion flow-guiding structure |
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2016
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|---|---|---|---|---|
| US3749186A (en) * | 1972-07-03 | 1973-07-31 | B Kutuzov | Drilling stem for drilling holes blown-out by pressurized air |
| US4406335A (en) * | 1980-10-30 | 1983-09-27 | Nick Koot | Special circulation sub |
| CN2784570Y (en) * | 2005-04-14 | 2006-05-31 | 中国石化集团胜利石油管理局钻井工艺研究院 | Mechanical automatic vertical drilling tool |
| CN202176312U (en) * | 2011-08-15 | 2012-03-28 | 李长海 | Decompression kelly cock valve |
| CN104453752A (en) * | 2013-09-13 | 2015-03-25 | 中国石油天然气集团公司 | Drill pipe sub bypass valve and operation method |
| CN203515439U (en) * | 2013-09-22 | 2014-04-02 | 中国石油集团西部钻探工程有限公司 | Internal blowout preventer |
| CN204284486U (en) * | 2014-11-21 | 2015-04-22 | 广东众辰科技有限公司 | A kind of Water flow adjusting valve |
| CN204899864U (en) * | 2015-08-24 | 2015-12-23 | 西安奥腾石油工程技术服务有限公司 | But pressure measurement formula down hole sleeve valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107558945A (en) * | 2017-10-27 | 2018-01-09 | 成都瞬科仪器仪表有限公司 | A kind of natural gas well anti-corrosion flow-guiding structure |
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Application publication date: 20160810 |