CN109751041B - Flexible logging instrument - Google Patents
Flexible logging instrument Download PDFInfo
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- CN109751041B CN109751041B CN201910092905.9A CN201910092905A CN109751041B CN 109751041 B CN109751041 B CN 109751041B CN 201910092905 A CN201910092905 A CN 201910092905A CN 109751041 B CN109751041 B CN 109751041B
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Abstract
The invention provides a flexible logging instrument which comprises an upper connector, a connecting pipe, a lower connector and a lower protective cap connector, wherein the upper connector, the connecting pipe, the lower connector and the lower protective cap connector are sequentially connected end to end; the flexible logging instrument further comprises a plurality of 32-core female heads arranged inside the flexible logging instrument, and first contact pins of the 32-core female heads and the key grooves are all located on the same plane; the flexible logging instrument further comprises a plurality of 32-core bearing blocks which are matched and connected with the 32-core female head. The flexible logging instrument provided by the invention has the advantages of relatively simple structure, reliable connection and accurate instrument positioning.
Description
Technical Field
The application relates to the field of well logging, in particular to a flexible logging instrument.
Background
When a cable instrument is used for logging on site, a highly-inclined well section or a horizontal well section is usually encountered, and when the well section is used for electrical measurement, an instrument string cannot reach a target layer due to the gravity of the instrument, the instrument string must be achieved by a horizontal well tool or a crawler, namely, a flexible logging instrument needs to be connected into the instrument string, and the steering of the logging instrument is achieved. Although the existing flexible short-section instrument can achieve the purpose, the positioning of the instrument string cannot be achieved, and the high edges of the instrument string cannot be unified.
Disclosure of Invention
In order to solve the technical problems, the invention provides a flexible logging instrument which can be suitable for a highly-deviated well section or a horizontal well section, and an instrument string can be accurately positioned.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
the invention provides a flexible logging instrument, which comprises an upper connector, a connecting pipe, a lower connector and a lower protective cap connector,
the upper joint, the upper connector, the connecting pipe, the lower connector and the lower protective cap joint are sequentially connected end to end,
the flexible logging instrument is provided with a plurality of key slots which are arranged on the same straight line;
the flexible logging instrument further comprises a plurality of 32-core female heads arranged inside the flexible logging instrument, and first contact pins of the 32-core female heads and the key grooves are all located on the same plane, so that the first contact pins of the 32-core female heads are all located on the same straight line;
the flexible logging instrument further comprises a plurality of 32-core bearing blocks which are matched and connected with the 32-core female head;
the number of the 32-core female heads is 4, and the 32-core female heads comprise a first 32-core female head, a second 32-core female head, a third 32-core female head and a fourth 32-core female head; the number of the 32-core bearing blocks is 2, and the 32-core bearing blocks comprise first 32-core bearing blocks and second 32-core bearing blocks; the front end of the upper joint is connected with the first 32-core female head, and the tail end of the upper joint is connected with the second 32-core female head; the second 32-core female head and the fourth 32-core female head are mounted on the first 32-core bearing block; the tail end of the lower connector is connected with the third 32-core female head, and the third 32-core female head is mounted on the second 32-core bearing block; the 32-core pressure bearing block is provided with grooves corresponding to the 32 pins of the 32-core female head; the first 32-core female head is matched with the upper connector through a key and a key groove, so that the key groove on the outer side of the front end of the upper connector and the first contact pin of the first 32-core female head are positioned on the same plane, and the key groove on the rear end of the upper connector is matched with the key on the front end of the first 32-core bearing block; the lower connector is connected with the third 32-core female head through a key groove at the tail end, and the key groove at the tail end of the lower connector and the first contact pin of the third 32-core female head are positioned on the same plane; when a plurality of first contact pins of the 32-core female head are all positioned on the same straight line, other contact pins are correspondingly positioned on the same straight line.
The flexible logging tool can also have the following characteristics,
the connecting pipe includes flexible pipe and balanced pipe, the flexible pipe with the front end of balanced pipe with go up the connector and link to each other, the flexible pipe with the tail end of balanced pipe with the connector links to each other down.
The flexible logging tool can also have the following characteristics,
and a plurality of annular laser cutting seams are arranged on the flexible pipe.
The flexible logging tool can also have the following characteristics,
the oil plug is characterized by further comprising an oil plug, wherein the oil plug comprises a first oil plug and a second oil plug, the first oil plug is arranged on the upper connecting head, and the second oil plug is arranged on the lower connecting head.
The flexible logging tool can also have the following characteristics,
the flexible logging instrument further comprises an upper protective cap and a lower protective cap, wherein the upper protective cap and the lower protective cap are respectively arranged at the front end and the tail end of the flexible logging instrument.
The flexible logging tool can also have the following characteristics,
the upper joint outside is fixed with first fast nut and the fast nut of second soon, go up the helmet with the upper joint passes through first fast nut is connected, go up the connector with the upper joint passes through the fast nut of second is connected.
The flexible logging tool can also have the following characteristics,
the O-shaped sealing ring is made of perfluororubber.
Compared with the prior art, the invention has the following beneficial effects:
according to the flexible logging instrument, the upper connector, the connecting pipe, the lower connector and the lower protective cap connector are sequentially connected end to end, the structure is relatively simple, the connection is reliable, and the operation is more convenient when a well head is connected with the instrument by arranging the 32-core female head; be provided with a plurality of keyways on flexible logging instrument, a plurality of keyways set up on same straight line to the first contact pin of a plurality of 32 core female heads is in the coplanar with neighbouring keyway respectively, makes the first contact pin (and other contact pins) of a plurality of 32 core female heads all be located same straight line, guarantees that the location of instrument is accurate. The flexible logging instrument provided by the invention is stable and firm in connection and high in downhole working reliability, and meanwhile, the service life of the flexible logging instrument is prolonged.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a schematic diagram of a flexible logging tool according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a flexible logging tool according to an embodiment of the invention;
fig. 3 is an enlarged view of the structure of portion a in fig. 2.
Illustration of the drawings:
1-upper joint, 11-first quick-screwing nut, 12-second quick-screwing nut, 2-upper joint, 21-first oil plug, 3-connecting pipe, 31-flexible pipe, 311-type annular laser cutting seam, 312-fixed block, 313-connecting screw, 32-balance pipe, 4-lower joint, 41-second oil plug, 5-lower protective cap joint, 61-first 32-core female head, 62-second 32-core female head, 63-third 32-core female head, 64-fourth 32-core female head, 71-first 32-core pressure-bearing block, 72-second 32-core pressure-bearing block, 81-upper protective cap, 82-lower protective cap and 9-O type sealing ring.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The invention provides a flexible logging instrument, which comprises an upper connector 1, an upper connector 2, a connecting pipe 3, a lower connector 4 and a lower protective cap connector 5, wherein the upper connector 1, the upper connector 2, the connecting pipe 3, the lower connector 4 and the lower protective cap connector 5 are sequentially connected end to end, the flexible logging instrument is provided with a plurality of key slots, and the key slots are arranged on the same straight line; the flexible logging instrument further comprises a plurality of 32-core female heads arranged inside the flexible logging instrument, and first contact pins of the 32-core female heads and the key grooves are all located on the same plane; the flexible logging instrument further comprises a plurality of 32-core bearing blocks which are in plug-in fit with the 32-core female heads. In the embodiment of the present invention, there are 4 core female heads in total (i.e., the first 32 core female head 61, the second 32 core female head 62, the third 32 core female head 63, and the fourth 32 core female head 64), and 2 core bearing blocks in total (i.e., the first 32 core bearing block 71 and the second 32 core bearing block 72), and it should be noted that the number of the 32 core female heads and the 32 core bearing blocks may be adaptively increased or decreased according to the number of the connected instrument strings.
According to the flexible logging instrument, the upper connector 1, the upper connector 2, the connecting pipe 3, the lower connector 4 and the lower protective cap connector 5 are sequentially connected end to end, the structure is relatively simple, the connection is reliable, and the operation is more convenient when a wellhead is connected with the instrument by arranging the 32-core female head; be provided with a plurality of keyways on flexible logging instrument, a plurality of keyways set up on same straight line to the first contact pin of a plurality of 32 core female heads is in the coplanar with neighbouring keyway respectively, makes the first contact pin of a plurality of 32 core female heads all be located same straight line, guarantees that the location of instrument cluster is accurate. The flexible logging instrument provided by the invention is stable and firm in connection and high in downhole working reliability, and meanwhile, the service life of the flexible logging instrument is prolonged.
In fig. 1 and 2, the end to which the upper joint 1 is attached is the front end, and the end to which the lower cap joint 5 is attached is the rear end (tail end).
The specific positioning process comprises the following steps: first 32 core female heads 61 and top connection 1 pass through key and keyway cooperation, make the keyway of the top connection 1 front end outside and the first contact pin of first 32 core female heads 61 be located the coplanar, the keyway of top connection 1 rear end and the key cooperation of first 32 core bearing block 71 front end (install second 32 core female heads 62 and fourth 32 core female heads 64 on the first 32 core bearing block 71), top connection 1 and top connection 2 are relatively fixed through threaded connection, top connection 2 and flexible pipe 31, and it is fixed to be connected through fixed block 312 and connecting screw 313 between flexible pipe 31 and the lower connector 4, lower connector 4 is connected with 2 first 32 core female heads 61 through the keyway of tail end (install third 32 core female heads 63 on 2 first 32 core female heads 61), the keyway of lower connector 4 tail end and the first contact pin of third 32 core female heads 63 are located the coplanar. The key is matched with the key groove, is in threaded connection, is fixedly connected with the connecting screw 313 through the fixing block 312, can limit the rotation of the circumferential direction, and finally, the first inserting pins of the first 32-core female head 61, the second 32-core female head 62, the third 32-core female head 63 and the fourth 32-core female head 64 are all located on the same straight line, namely, the accurate positioning of the instrument string is realized.
It should be noted that while the first pins of the 32-core female heads are all ensured to be located on the same straight line, the other pins are correspondingly located on the same straight line. The number of the fixing blocks 312 and the number of the connecting screws 313 are both 6, the fixing blocks 312 bear shearing force when used for connection, and the connecting screws 313 are mainly used for fixing the fixing blocks 312 on corresponding components.
As shown in fig. 1 to fig. 3, the front end of the upper joint 1 is connected with a first 32-core female head 61, the tail end of the upper joint 1 is connected with a second 32-core female head 62, and the tail end of the lower joint 4 is connected with a third 32-core female head 63.
As shown in fig. 3, the flexible logging tool further includes a first 32-core bearing block 71, one end of the first 32-core bearing block 71 is connected to the tail end of the second 32-core female head 62, and the other end of the first 32-core bearing block 71 is connected to the fourth 32-core female head 64.
The 32-core bearing block is provided with a groove corresponding to 32 cores (namely 32 pins) of the 32-core female head, so that the 32-core bearing block and the 32-core female head can be tightly matched.
The 4 female heads with 32 cores are all arranged in a channel in the flexible logging instrument, wherein the second female head with 32 cores 62 is provided with a rear cover, and a thin retainer ring with 32 cores is further arranged at the front end of the first female head with 32 cores 61 and used for limiting the axial movement of the first female head with 32 cores 61.
The flexible logging tool further comprises a second 32-core bearing block 72, wherein one end of the second 32-core bearing block 72 is connected with the tail end of the third 32-core female head 63. The other end of the second 32 core bearing block 72 is connected to subsequent instrumentation to facilitate increasing the number of instrument strings.
Wherein the first 32 core bearing block 71 and the second 32 core bearing block 72 are also used for transferring electrical signals and radial positioning of the instrument. The tail end of the second 32-core bearing block 72 can also be connected with the upper connector 1 of the next instrument for the purposes of transmitting electric signals and positioning.
The connecting pipe 3 comprises a balance pipe 32 and a flexible pipe 31, the front ends of the balance pipe 32 and the flexible pipe 31 are connected with the upper connector 2, and the tail ends of the balance pipe 32 and the flexible pipe 31 are connected with the lower connector 4.
The tail end of the upper connector 2 is also connected with a connecting block, and two ends of the balance pipe 32 are respectively fixed at the tail end of the connecting block and the front end of the lower connector 4 through hose clamps. The balance tube 32 is made of perfluororubber, so that the overall heat resistance of the logging instrument is greatly improved (above 250 ℃).
The flexible tube 31 is provided with a plurality of annular laser cutting seams 311.
The number of the annular laser cutting seams is set to 5, and the effect of instrument reversing can be achieved.
The oil plug is further included, the oil plug comprises a first oil plug 21 and a second oil plug 41, the first oil plug 21 is arranged on the upper connector 2, and the second oil plug 41 is arranged on the lower connector 4.
Through the first oil plug 21 and the second oil plug 41, the dimethyl silicone oil is filled into a channel between the third 32-core female head 63 and the fourth 32-core female head 64, and the dimethyl silicone oil can play a role in protecting the balance tube 32 and ensure an electrical insulation effect. The first oil plug 21 and the second oil plug 41 are used for sealing oil liquid and maintaining the internal pressure balance of the instrument.
As shown in fig. 2, the flexible logging tool further comprises an upper protective cap 81 and a lower protective cap 82, wherein the upper protective cap 81 and the lower protective cap 82 are respectively installed at the front end and the tail end of the flexible logging tool.
The upper protective cap 81 and the lower protective cap 82 are used for protecting two ends of the flexible logging instrument and preventing external impurities from entering the instrument to damage the instrument.
The outside of the upper joint 1 is fixed with a first quick-screwing nut 11 and a second quick-screwing nut 12, the upper protective cap 81 is connected with the upper joint 1 through the first quick-screwing nut 11, and the upper connector 2 is connected with the upper joint 1 through the second quick-screwing nut 12.
Wherein the first quick-turn nut 11 can also be used for connecting other instruments, i.e. adding instrument strings.
The O-rings 9,O are made of perfluoro rubber (not all O-rings are labeled in fig. 3), and the number of the O-rings used for operation is 10 (the lower protective cap is removed during operation, so the O-rings thereon are not counted).
The O-shaped sealing ring of the perfluororubber can greatly improve the heat resistance and high pressure resistance of the flexible logging instrument, so that the working index of the instrument can reach 232 ℃/175MPa, and the requirement of hanging connection with a high-temperature instrument is met.
In the description of the present invention, it should be noted that the term "plurality" means two or more, and the directions or positional relationships indicated by the terms "upper", "lower", "one end", "the other end", and the like are based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the structures referred to have a specific direction, are configured and operated in a specific direction, and thus, cannot be construed as limiting the present invention.
In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "connected," "connected," and "mounted" are to be construed broadly, e.g., the term "connected" may be a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Although the embodiments disclosed in the present application are described above, the descriptions are only for the convenience of understanding the present application, and are not intended to limit the present application. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims.
Claims (7)
1. A flexible logging tool, comprising: comprises an upper joint, an upper connector, a connecting pipe, a lower connector and a lower protective cap joint,
the upper joint, the upper connector, the connecting pipe, the lower connector and the lower protective cap joint are sequentially connected end to end,
the flexible logging instrument is provided with a plurality of key slots which are arranged on the same straight line;
the flexible logging instrument further comprises a plurality of 32-core female heads arranged inside the flexible logging instrument, and first contact pins of the 32-core female heads and the key grooves are all located on the same plane, so that the first contact pins of the 32-core female heads are all located on the same straight line;
the flexible logging instrument further comprises a plurality of 32-core bearing blocks which are matched and connected with the 32-core female head;
the number of the 32-core female heads is 4, and the 32-core female heads comprise a first 32-core female head, a second 32-core female head, a third 32-core female head and a fourth 32-core female head; the number of the 32-core pressure-bearing blocks is 2, and the 32-core pressure-bearing blocks comprise a first 32-core pressure-bearing block and a second 32-core pressure-bearing block; the front end of the upper joint is connected with the first 32-core female head, and the tail end of the upper joint is connected with the second 32-core female head; the second 32-core female head and the fourth 32-core female head are mounted on the first 32-core bearing block; the tail end of the lower connector is connected with the third 32-core female head, and the third 32-core female head is mounted on the second 32-core bearing block; the 32-core bearing block is provided with grooves corresponding to the 32 contact pins of the 32-core female head; the first 32-core female head is matched with the upper connector through a key and a key groove, so that the key groove on the outer side of the front end of the upper connector and the first contact pin of the first 32-core female head are positioned on the same plane, and the key groove on the rear end of the upper connector is matched with the key on the front end of the first 32-core bearing block; the lower connector is connected with the third 32-core female head through a key groove at the tail end, and the key groove at the tail end of the lower connector and the first contact pin of the third 32-core female head are positioned on the same plane; when a plurality of first contact pins of the 32-core female head are all located on the same straight line, other contact pins are correspondingly located on the same straight line.
2. The flexible logging tool of claim 1, wherein: the connecting pipe includes flexible pipe and balanced pipe, the flexible pipe with the front end of balanced pipe with go up the connector and link to each other, the flexible pipe with the tail end of balanced pipe with the connector links to each other down.
3. The flexible logging tool of claim 2, wherein: and a plurality of annular laser cutting seams are arranged on the flexible pipe.
4. The flexible logging tool according to any of claims 1 to 3, wherein: the oil plug is characterized by further comprising an oil plug, wherein the oil plug comprises a first oil plug and a second oil plug, the first oil plug is arranged on the upper connecting head, and the second oil plug is arranged on the lower connecting head.
5. The flexible logging tool according to any of claims 1 to 3, wherein: the flexible logging instrument further comprises an upper protective cap and a lower protective cap, wherein the upper protective cap and the lower protective cap are respectively arranged at the front end and the tail end of the flexible logging instrument.
6. The flexible logging tool of claim 5, wherein: the upper joint outside is fixed with first fast nut and the fast nut of second soon, go up the helmet with the upper joint passes through first fast nut is connected, go up the connector with the upper joint passes through the fast nut of second is connected.
7. The flexible logging tool according to any of claims 1 to 3, wherein: the O-shaped sealing ring is made of perfluororubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910092905.9A CN109751041B (en) | 2019-01-30 | 2019-01-30 | Flexible logging instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910092905.9A CN109751041B (en) | 2019-01-30 | 2019-01-30 | Flexible logging instrument |
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| Publication Number | Publication Date |
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| CN109751041A CN109751041A (en) | 2019-05-14 |
| CN109751041B true CN109751041B (en) | 2023-03-14 |
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| CN201910092905.9A Active CN109751041B (en) | 2019-01-30 | 2019-01-30 | Flexible logging instrument |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073944A (en) * | 2021-04-14 | 2021-07-06 | 高庆伟 | Flexible universal connection nipple for large-inclination and horizontal well |
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| US4171031A (en) * | 1977-10-03 | 1979-10-16 | Dresser Industries, Inc. | Well logging instrument guide apparatus |
| CN2811567Y (en) * | 2005-05-24 | 2006-08-30 | 尹宪宏 | Piston type pressure balance transmission device for well logging tool |
| CN101054896A (en) * | 2007-05-30 | 2007-10-17 | 中国海洋石油总公司 | Eight-arm mechanical pusher |
| CN201810301U (en) * | 2010-04-20 | 2011-04-27 | 西安石竹能源科技有限公司 | Flexible connector |
| CN202325474U (en) * | 2011-09-16 | 2012-07-11 | 天津泰克信达机电科技有限公司 | Flexible connector for oil well |
| CN103061744A (en) * | 2012-12-31 | 2013-04-24 | 中国海洋石油总公司 | Electric imaging device and processing method thereof |
| CN109236270A (en) * | 2018-08-24 | 2019-01-18 | 中国海洋石油集团有限公司 | A kind of logging instrument |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204002760U (en) * | 2014-08-22 | 2014-12-10 | 西安恒赛新技术有限公司 | A kind of used in oil well logging flexible nipple |
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2019
- 2019-01-30 CN CN201910092905.9A patent/CN109751041B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4171031A (en) * | 1977-10-03 | 1979-10-16 | Dresser Industries, Inc. | Well logging instrument guide apparatus |
| CN2811567Y (en) * | 2005-05-24 | 2006-08-30 | 尹宪宏 | Piston type pressure balance transmission device for well logging tool |
| CN101054896A (en) * | 2007-05-30 | 2007-10-17 | 中国海洋石油总公司 | Eight-arm mechanical pusher |
| CN201810301U (en) * | 2010-04-20 | 2011-04-27 | 西安石竹能源科技有限公司 | Flexible connector |
| CN202325474U (en) * | 2011-09-16 | 2012-07-11 | 天津泰克信达机电科技有限公司 | Flexible connector for oil well |
| CN103061744A (en) * | 2012-12-31 | 2013-04-24 | 中国海洋石油总公司 | Electric imaging device and processing method thereof |
| CN109236270A (en) * | 2018-08-24 | 2019-01-18 | 中国海洋石油集团有限公司 | A kind of logging instrument |
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| CN109751041A (en) | 2019-05-14 |
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