CN114941522A - Underground high-pressure sealing hinge type connector - Google Patents
Underground high-pressure sealing hinge type connector Download PDFInfo
- Publication number
- CN114941522A CN114941522A CN202210773578.5A CN202210773578A CN114941522A CN 114941522 A CN114941522 A CN 114941522A CN 202210773578 A CN202210773578 A CN 202210773578A CN 114941522 A CN114941522 A CN 114941522A
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- Prior art keywords
- connector
- flange
- ring flange
- ball head
- connecting rod
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- 238000007789 sealing Methods 0.000 title abstract description 32
- 239000000523 sample Substances 0.000 abstract description 15
- 238000005553 drilling Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000012360 testing method 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
- E21B47/00—Survey of boreholes or 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
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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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)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention provides a downhole high-pressure sealing hinge type connector which is used for sealing and interconnecting various geophysical observation instrument units. The connector includes: the upper connector and the lower connector are respectively used for connecting with the upper observation instrument unit and the lower observation instrument unit; the upper end of the ball head is hermetically connected with the upper connector, the lower end of the ball head is connected with the lower connector through a flexible connecting pipe, and the upper connector, the ball head, the flexible connecting pipe and the lower connector are sequentially connected and then form a wire channel inside; and the supporting structure is used for supporting the ball head between the upper flange plate and the middle flange plate, and the end surface of the upper flange plate and the end surface of the middle flange plate are both provided with cambered surfaces so as to be in radian fit with the ball head arranged between the upper flange plate and the middle flange plate. The method can realize the self-adaptive drilling curvature of the underground comprehensive probe observation unit and ensure that the azimuth angles of the upper and lower observation units which are connected with each other can be accurately transmitted.
Description
Technical Field
The invention relates to the field of mechanical structures and geophysical and earth observation, in particular to an underground high-pressure sealed hinge type connector which is suitable for sealing and interconnecting various geophysical observation instrument units in a deep well environment.
Background
In geophysical and geodetic surveying, a borehole-type instrument is often used to measure or observe physical quantities such as earthquake, geomagnetism, geostationary inclination, and geostatic strain in a borehole. During measurement, firstly, a hole is drilled in a to-be-measured part of the crust, then the test probe is placed on a to-be-measured hole section, the measurement unit is coupled with the hole wall by using a cement pouring mode or mechanical coupling, and the vibration, deformation or ground inclination of the crust rock can be transmitted to the measurement unit to achieve the purpose of observation. In the twenty-first century, geophysical observation is developed from a single measurement means to comprehensive observation, so that various geophysical observation instrument units are required to be integrated and interconnected to form an integral comprehensive probe, and the length of the integral comprehensive probe can reach more than several meters. On one hand, the length of the comprehensive probe is increased, on the other hand, due to errors of processing machinery, the integrated interconnection of various geophysical observation instrument units cannot be completely in the same axis, and meanwhile, a drill hole has certain bending degree, so that the trafficability of the underground comprehensive probe with the length of several meters in the drill hole is poor in the underground installation process. Therefore, a mechanical connector capable of adapting to the curvature of the borehole and having high-pressure sealing performance is needed, different observation instrument units of the downhole comprehensive probe are connected with each other, the accurate transmission of the azimuth angles of the upper and lower different observation instrument units connected with the downhole comprehensive probe can be ensured, and the downhole comprehensive probe with the length of several meters can be smoothly installed in an observation depth section.
Disclosure of Invention
The invention provides a hinge type connector for underground high-pressure sealing, which aims to overcome the defects in the prior art.
The invention discloses a downhole high-pressure sealing hinge type connector, which is used for sealing and interconnecting various geophysical observation instrument units and comprises:
the upper connector is used for being connected with an upper observation instrument unit, and the lower connector is used for being connected with a lower observation instrument unit;
the upper end of the ball head is hermetically connected with the upper connector, the lower end of the ball head is connected with the lower connector through a flexible connecting pipe, and the upper connector, the ball head, the flexible connecting pipe and the lower connector are sequentially connected and then form a wire channel inside; and
bearing structure for support the bulb, including upper portion ring flange, middle ring flange, lower part ring flange, many upper portion connecting rods and many lower part connecting rods, the upper portion ring flange passes through many lower part connecting rods pass middle ring flange with the upper portion ring flange is connected, the upper portion ring flange with middle ring flange passes through many upper portion connecting rods are connected, the terminal surface of upper portion ring flange with the terminal surface of middle ring flange all is equipped with the cambered surface, thereby with set up in the upper portion ring flange with between the middle ring flange the bulb keeps the radian cooperation.
Preferably, the number of the lower connecting rods is 4, and 1 lower connecting rod is arranged at the edge of the flange plate at intervals of 90 degrees.
Preferably, both ends of the lower connecting rod are fixed by fixing nuts.
Preferably, the number of the upper connecting rods is 4, 1 upper connecting rod is arranged at the edge of the flange plate at intervals of 90 °, and each upper connecting rod is spaced from each lower connecting rod by 45 ° in the circumferential direction of the flange plate.
Preferably, each upper connecting rod is provided with an adjusting outer cylinder.
Preferably, both ends of the upper connecting rod are fixed by fixing nuts.
Preferably, the wire channel is for passing a wire connecting the upper scope unit and the lower scope unit.
Preferably, the lower flange is connected with the lower connector in a sealing manner.
The invention has the following beneficial effects:
the underground high-pressure sealing hinge type connector can realize mechanical interconnection of the underground comprehensive probe observation units, can realize the self-adaptive drilling curvature of the underground comprehensive probe observation units, ensures that the azimuth angles of the upper and lower observation units which are connected with each other can be accurately transmitted, has high-pressure sealing performance, and realizes that the underground comprehensive probe observation units with the length of several meters can be smoothly installed in an observation depth section.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic longitudinal sectional view of a downhole high pressure sealing hinge type connector according to an embodiment of the present invention.
Fig. 2 is a schematic longitudinal sectional view of a downhole high pressure sealing hinge type connector according to an embodiment of the present invention, wherein the section of fig. 2 is 45 ° from the section of fig. 1.
Detailed Description
The embodiments of the present invention will be described below with reference to the drawings attached to the specification. It should be noted that the embodiments mentioned in the present description are not exhaustive and do not represent the only embodiments of the present invention. The following examples are provided for clarity of the disclosure of the present patent application and are not intended to limit the scope of the invention. It will be apparent to those skilled in the art that various changes and modifications can be made in the embodiments described above, and it is intended to cover all modifications and variations of the present invention which fall within the spirit and scope of the invention.
As shown in fig. 1-2, a downhole high pressure sealing hinge-type connector of a preferred embodiment of the present invention for sealing interconnection between a plurality of geophysical observation instrument units, comprises: upper portion connector 1, lower part connector 11, bulb 4, flexible connection pipe 9 and bearing structure. The components are explained in detail below.
The upper connector 1 is located at the uppermost end of the underground high-pressure sealing hinge connector and is used for being connected with an upper observation instrument unit (not shown), and the lower connector 11 is located at the lowermost end of the underground high-pressure sealing hinge connector and is used for being connected with a lower observation instrument unit (not shown). It should be noted that the upper scope unit and the lower scope unit mentioned herein are all one or a part of the integrated probe formed by integrally interconnecting a plurality of geophysical scope units.
And the upper end of the ball head 4 is hermetically connected with the upper connector 1 and cannot rotate in a horizontal plane, and the lower end of the ball head is hermetically connected with the lower connector 11 through a flexible connecting pipe 9 and cannot rotate in the horizontal plane. Preferably, the sealing manner may adopt an O-ring sealing technology, which belongs to the known technology and is not described herein. The upper connector 1, the bulb 4, the flexible connecting pipe 9 and the lower connector 11 are sequentially connected to form a wire channel 7 inside. The wire passage 7 is used for a wire (cable) connecting the upper scope unit and the lower scope unit to pass through, so that the upper scope unit and the lower scope unit can be electrically connected. The flexible connecting pipe 9 can enable the ball head 4 to deviate from the axial free rotation of the underground high-pressure sealing hinge type connector, and meanwhile, the flexible connecting pipe has self-sealing performance.
In a preferred embodiment of the downhole high pressure sealed hinged connector of the invention, a support structure is used to support the ball head 4. Preferably, the support structure comprises an upper flange 2, an intermediate flange 6, a lower flange 10, a plurality of upper connecting rods 5 and a plurality of lower connecting rods 8. The lower flange 10 is connected to the upper flange 2 by the lower connecting rods 8 passing through the intermediate flange 6. And the lower flange plate 10 is connected with the lower connector 11 in a sealing way and cannot rotate in the horizontal plane after connection, the middle flange plate 6 is positioned below the ball head 4, and the upper flange plate 2 is positioned above the ball head 4. In a preferred embodiment, the number of the lower connecting rods 8 is 4, and 1 lower connecting rod 8 is arranged at the edge of the flange plate at intervals of 90 degrees. That is, 4 through holes are uniformly arranged at the edges of the upper flange 2, the middle flange 6 and the lower flange 10, respectively, and each through hole is spaced by 90 ° in the circumferential direction of the flange and is penetrated by 4 lower connecting rods 8. Further, both ends of the lower connecting rod 8 are fixed by first fixing nuts 13, that is, one end (upper end) of the lower connecting rod 8 extending out of the upper flange 2 and one end (lower end) of the lower connecting rod 8 extending out of the lower flange 10 are respectively fastened and fixed by the first fixing nuts 13.
In addition, the upper flange 2 and the intermediate flange 6 are connected by the plurality of upper connecting rods 5. In a preferred embodiment, the number of the upper connecting rods 5 is 4, 1 upper connecting rod 5 is arranged at every 90 ° on the edge of the flange, and each upper connecting rod 5 is spaced 45 ° from each lower connecting rod 8 in the circumferential direction of the flange. That is, 4 through holes are uniformly arranged at the edges of the upper flange 2 and the middle flange 6, respectively, and each through hole is spaced by 90 degrees in the circumferential direction of the flange and is penetrated by 4 upper connecting rods 5. That is, the upper connecting rod 5 and the lower connecting rod 8 are arranged at an interval of 45 ° in the circumferential direction of the flange. Furthermore, both ends of the upper connecting rod 5 are fixed by second fixing nuts 12, that is, one end (upper end) of the upper connecting rod 5 extending out of the upper flange 2 and one end (lower end) of the upper connecting rod 5 extending out of the intermediate flange 6 are respectively fastened and fixed by the second fixing nuts 12.
In a preferred embodiment, each upper connecting rod 5 is further provided with an adjusting outer cylinder 3. The adjusting outer cylinder 3 is in a hollow cylinder shape, is sleeved on the upper connecting rod 5 and is positioned between the upper flange 2 and the middle flange 6, and plays a role in limiting the distance between the upper flange 2 and the middle flange 6, so that the ball head 4 can be matched with the upper flange 2 and the middle flange 6 in a proper radian.
In each preferred embodiment of the present invention, the end surface of the upper flange 2 and the end surface of the intermediate flange 6 are provided with a curved surface so as to maintain an arc fit with the ball head 4 disposed between the upper flange 2 and the intermediate flange 6. That is, the lower end surface of the upper flange 2 is provided with a cambered surface which is matched with the upper spherical part of the ball head 4 in a radian manner, and the upper end surface of the middle flange 6 is provided with a cambered surface which is matched with the lower spherical part of the ball head 4 in a radian manner.
Through the structure, the ball head 4 can be supported between the upper connector 1 and the lower connector 2, and the ball head 4 can freely rotate at a small angle deviating from the axial direction of the underground high-pressure sealing hinge connector, so that the upper part (part above the ball head) and the lower part (part below the ball head) of the underground high-pressure sealing hinge connector can be bent at a small angle at the ball head position, the bending degree of self-adaption drilling in a drilling hole can be realized by the upper observation instrument unit and the lower observation instrument unit which are connected through the underground high-pressure sealing hinge connector, and the long underground comprehensive probe can be smoothly installed in an observation depth section. In a preferred embodiment, more than 1 downhole high pressure sealed hinged connector of the present invention may be utilized depending on the overall length of the downhole integrated probe.
In addition, in the invention, the lower connecting rods 8 are tightly matched with the through holes of the upper flange 2 and the lower flange 10, so that the upper connector 1 and the lower connector 11 can be ensured not to rotate around the axial direction of the underground high-pressure sealing hinge connector, and the azimuth angles of different upper and lower observation instrument units connected by the underground high-pressure sealing hinge connector can be accurately transmitted.
In the invention, the connection between the upper connector 1 and the ball head 4, the connection between the ball head 4 and the flexible connecting pipe 9, and the connection between the flexible connecting pipe 9 and the lower connector 11 are all in sealing connection, preferably, O-ring sealing technology is adopted, so that the underground high-pressure sealing hinge type connector can realize high-pressure sealing performance.
It should be apparent to those skilled in the art that the above embodiments are only for illustrating the present invention and are not used as limitations of the present invention, and that changes and modifications to the above embodiments may fall within the scope of the appended claims within the spirit of the present invention.
Claims (8)
1. A downhole high pressure sealed hinged connector for sealed interconnection between multiple geophysical observation instrument units, comprising:
the upper connector is used for being connected with an upper observation instrument unit, and the lower connector is used for being connected with a lower observation instrument unit;
the upper end of the ball head is hermetically connected with the upper connector, the lower end of the ball head is connected with the lower connector through a flexible connecting pipe, and the upper connector, the ball head, the flexible connecting pipe and the lower connector are sequentially connected and then form a wire channel inside; and
bearing structure for support the bulb, including upper portion ring flange, middle ring flange, lower part ring flange, many upper portion connecting rods and many lower part connecting rods, the upper portion ring flange passes through many lower part connecting rods pass middle ring flange with the upper portion ring flange is connected, the upper portion ring flange with middle ring flange passes through many upper portion connecting rods are connected, the terminal surface of upper portion ring flange with the terminal surface of middle ring flange all is equipped with the cambered surface, thereby with set up in the upper portion ring flange with between the middle ring flange the bulb keeps the radian cooperation.
2. The downhole high pressure sealed hinge connector of claim 1, wherein the number of the plurality of lower connecting rods is 4, and 1 lower connecting rod is arranged at every 90 degrees at the edge of the flange.
3. The downhole high pressure sealed hinged connector of claim 2, wherein the lower connecting rod is secured at both ends by a retaining nut.
4. The downhole high pressure sealed hinge connector of claim 3, wherein the number of the plurality of upper connecting rods is 4, 1 upper connecting rod is arranged at every 90 ° at the edge of the flange, and each upper connecting rod is spaced 45 ° from each lower connecting rod in the circumferential direction of the flange.
5. The downhole high pressure sealed hinged connector of claim 4, wherein an adjustment barrel is provided on each upper connecting rod.
6. The downhole high pressure sealed hinged connector of claim 5, wherein the upper connecting rod is secured at both ends by a retaining nut.
7. The downhole high pressure sealed hinged connector of claim 1, wherein the wire passage is for passage of a wire connecting the upper scope unit and the lower scope unit.
8. The downhole high pressure sealed hinged connector of claim 1, wherein the lower flange is sealingly connected to the lower connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210773578.5A CN114941522A (en) | 2022-07-01 | 2022-07-01 | Underground high-pressure sealing hinge type connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210773578.5A CN114941522A (en) | 2022-07-01 | 2022-07-01 | Underground high-pressure sealing hinge type connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114941522A true CN114941522A (en) | 2022-08-26 |
Family
ID=82911097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210773578.5A Pending CN114941522A (en) | 2022-07-01 | 2022-07-01 | Underground high-pressure sealing hinge type connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114941522A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2315172C1 (en) * | 2006-04-28 | 2008-01-20 | ОАО "Татнефть" им. В.Д. Шашина | Intra-flange check valve for injection wellhead fittings |
| CN201057041Y (en) * | 2007-04-16 | 2008-05-07 | 中国石化集团胜利石油管理局钻井工艺研究院 | Lengthened connection device |
| CN102333933A (en) * | 2008-12-29 | 2012-01-25 | 戴蒙德海底钻探公司 | Marine drilling riser connector with removable shear elements |
| CN106767382A (en) * | 2016-12-16 | 2017-05-31 | 北京华航无线电测量研究所 | The small-bore bidirectional two-dimensional floating adaptive mechanism of a kind of high temperature, high pressure down-hole pipe |
| WO2017131526A1 (en) * | 2016-01-27 | 2017-08-03 | Apl Technology As | Device for termination of a riser in a floating structure |
| CN108845101A (en) * | 2018-04-20 | 2018-11-20 | 大连理工大学 | It is classified buck borehole fissure detection system |
| CN210860187U (en) * | 2019-11-04 | 2020-06-26 | 武汉兴凯汽车科技有限公司 | Vacuum pipeline lock-buckle-free quick connector for sewage suction truck |
| CN113914830A (en) * | 2021-11-17 | 2022-01-11 | 西安航天动力技术研究所 | High temperature resistant flexible joint of marine riser |
-
2022
- 2022-07-01 CN CN202210773578.5A patent/CN114941522A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2315172C1 (en) * | 2006-04-28 | 2008-01-20 | ОАО "Татнефть" им. В.Д. Шашина | Intra-flange check valve for injection wellhead fittings |
| CN201057041Y (en) * | 2007-04-16 | 2008-05-07 | 中国石化集团胜利石油管理局钻井工艺研究院 | Lengthened connection device |
| CN102333933A (en) * | 2008-12-29 | 2012-01-25 | 戴蒙德海底钻探公司 | Marine drilling riser connector with removable shear elements |
| WO2017131526A1 (en) * | 2016-01-27 | 2017-08-03 | Apl Technology As | Device for termination of a riser in a floating structure |
| CN106767382A (en) * | 2016-12-16 | 2017-05-31 | 北京华航无线电测量研究所 | The small-bore bidirectional two-dimensional floating adaptive mechanism of a kind of high temperature, high pressure down-hole pipe |
| CN108845101A (en) * | 2018-04-20 | 2018-11-20 | 大连理工大学 | It is classified buck borehole fissure detection system |
| CN210860187U (en) * | 2019-11-04 | 2020-06-26 | 武汉兴凯汽车科技有限公司 | Vacuum pipeline lock-buckle-free quick connector for sewage suction truck |
| CN113914830A (en) * | 2021-11-17 | 2022-01-11 | 西安航天动力技术研究所 | High temperature resistant flexible joint of marine riser |
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