CN220209574U - Interface conversion nipple for logging while drilling instrument - Google Patents

Abstract

The utility model relates to an interface conversion nipple for a logging while drilling instrument, which comprises a drill collar nipple, wherein a mounting hole extending to penetrate the drill collar nipple along the axial direction of the drill collar nipple is arranged on the drill collar nipple; the two ends of the drill collar pup joint are provided with interfaces which are used for being mechanically connected with other instrument pup joints; the device comprises a mounting hole, a drill collar nipple, a main sliding ring, a conversion module and an adapter module, wherein the mounting hole is internally provided with the main sliding ring, the conversion module is connected with the drill collar nipple, the main sliding ring is connected with one side of the conversion module, the adapter module is connected with the other side of the conversion module, the main sliding ring is electrically connected with the adapter module, the main sliding ring is electrically connected with an instrument nipple with a male sliding ring, and the adapter module is electrically connected with the instrument nipple with a hard connection interface; the conversion module is internally provided with a fluid channel which extends to penetrate through the female slip ring and the adapter module. The utility model can realize the mechanical and electrical connection between the instrument nipple with the male slip ring and the instrument nipple with the hard connection interface.

Description

Interface conversion nipple for logging while drilling instrument

Technical Field

The utility model belongs to the technical field of switching joints, and particularly relates to an interface switching nipple for a logging while drilling instrument.

Background

The logging while drilling instrument is divided into different types of logging instruments according to a logging method, various logging while drilling instruments are independently designed and developed, and finally different logging while drilling instruments are connected together in series according to different use requirements to perform downhole logging operation.

The interfaces of different logging while drilling instruments are different, for example, the interfaces of the instrument nipple are male slip rings, the interfaces of the instrument nipple are hard connection interfaces, and the instrument nipple with the male slip rings and the instrument nipple with the hard connection interfaces cannot be directly connected, so that an interface conversion nipple is needed, and the mechanical connection and the electrical connection of the nipple with the hard connection interfaces and the nipple with the male slip rings can be realized.

Disclosure of Invention

In order to solve all or part of the problems, the utility model aims to provide an interface conversion nipple for a logging while drilling instrument, which can realize mechanical connection and electric connection of the nipple with a hard connection interface and the nipple with a male slip ring.

According to one aspect of the utility model, there is provided an interface conversion nipple for a logging while drilling instrument, comprising a drill collar nipple, wherein the drill collar nipple is provided with a mounting hole extending to penetrate through the drill collar nipple along the axial direction of the drill collar nipple; the two ends of the drill collar pup joint are provided with interfaces which are used for being mechanically connected with other instrument pup joints;

the device comprises a drill collar short section, a mounting hole, a main sliding ring, a conversion module and an adapter module, wherein the mounting hole is internally provided with the main sliding ring, the conversion module is connected with the drill collar short section, the main sliding ring is connected with one side of the conversion module, the adapter module is connected with the other side of the conversion module, the main sliding ring is electrically connected with the adapter module, the main sliding ring is electrically connected with the instrument short section with a male sliding ring, and the adapter module is electrically connected with the instrument short section with a hard connection interface;

and a fluid channel is arranged in the conversion module and extends to penetrate through the female slip ring and the adapter module.

Further, the conversion module comprises a conversion framework, the conversion framework is fixedly connected with the drill collar pup joint, the conversion framework is respectively and fixedly connected with the female slip ring and the adapter module, and the fluid channel is formed in the conversion framework;

the female sliding ring is kept away from the one end of conversion skeleton is connected with first contact, the adaptation head module is kept away from the one end of conversion skeleton is connected with the second contact, first contact be used for with the instrument nipple joint electric connection that has public sliding ring, the second contact be used for with the instrument nipple joint electric connection that has the hard connection interface, first contact with second contact electric connection.

Further, a first electrical connection channel is formed in the conversion framework, a first electrical connection structure is arranged in the first electrical connection channel, and the first contact and the second contact are electrically connected through the first electrical connection structure.

Further, the first electrical connection structure comprises a double female pin arranged in the first electrical connection channel, a first insulation sleeve is sleeved outside the double female pin, the double female pin is connected with a first double male pin and a second double male pin, the first double male pin is electrically connected with the first contact, the second double male pin is electrically connected with the second contact, a sealing piece is arranged between the first double male pin and the conversion framework, and the first double male pin and the second double male pin are fixedly connected with the first electrical connection channel respectively.

Further, the adapter module comprises an adapter and an adapter, the fluid channel extends to penetrate through the adapter, the second contact is arranged on the adapter and far away from one end of the adapter, the adapter is fixedly connected with the conversion framework, and the adapter is far away from one end of the conversion framework and extends to be fixedly connected with the adapter.

Further, the adapter comprises a first connecting part, an extending part and a second connecting part, wherein the first connecting part is connected with the adapter framework through a first fastening screw, the second connecting part is in threaded connection with the adapter, the fluid channel extends to penetrate through the first connecting part, and the extending part is used for connecting the annular first connecting part and the second connecting part positioned in the middle of the mounting hole; one end of the first connecting part, which is close to the conversion framework, is connected with a first limiting ring, one end of the conversion framework, which is close to the conversion joint, is provided with a matching annular hole, and the matching annular hole is matched with the first limiting ring.

Further, a second electrical connection channel is arranged in the adapter, a second electrical connection structure is arranged in the second electrical connection channel, and the second electrical connection structure is used for electrically connecting the first contact and the second contact.

Further, the second electrical connection structure comprises a first pin and a second pin, the first pin is electrically connected with the first contact, the first pin is electrically connected with the second pin, and the second pin is electrically connected with the second contact through a wire; a wire accommodating hole is formed in the adapter, the wire accommodating hole extends to the second contact, and a sealing plug is arranged in the wire accommodating hole; and sealing elements are arranged between the adapter and between the first contact pin and the second electrical connection channel.

Further, a third electrical connection channel communicated with the wire accommodating hole is arranged in the adapter, a third contact pin, a fourth contact pin and a third double-male contact pin are sequentially arranged in the third electrical connection channel, wherein the third contact pin is electrically connected with the second contact pin through a wire, a second insulating sleeve is sleeved outside the fourth contact pin, the fourth contact pin is respectively connected with the third contact pin and one end of the third double-male contact pin, and the other end of the third double-male contact pin is provided with the second contact; and sealing elements are arranged between the third pin and the adapter head and between the third double male pin and the adapter head.

Further, a limit step is arranged on the drill collar pup joint, one end of the conversion framework is provided with a matching ring matched with the limit step, the other end of the conversion framework is connected with a connecting piece, and the connecting piece fixes the conversion framework on the drill collar pup joint.

Further, the connecting piece is including the clamp ring, locking ring and the accepting ring that set gradually, accepting the ring is used for supporting the conversion skeleton is kept away from the one end of cooperation ring, the clamp ring is towards the one end of locking ring is provided with the expansion inclined plane, the locking ring adopts elastic material to make, the clamp ring pass through connecting screw with the conversion skeleton is connected, works as when connecting screw is screwed up, the clamp ring can take place elastic expansion under the effect of expansion inclined plane, and supports tightly the inner wall of drill collar nipple joint.

Further, the conversion framework is connected with the female slip ring through a second fastening screw, at least one group of adjusting gaskets are arranged between the female slip ring and the conversion framework, and limiting holes for the fastening screw to pass through are formed in the adjusting gaskets.

Further, a sealing groove is formed in the outer portion of the adapter, a first sealing structure is arranged in the sealing groove, and the first sealing structure is used for sealing the adapter and an instrument nipple connected with the adapter; the sealing ring with the first sealing structure is characterized in that one side or two sides of the sealing ring are respectively provided with an annular check ring, and the cross section of the annular check ring is triangular.

Further, the two interfaces are female interfaces, and the female interfaces are used for being in threaded connection with an instrument nipple with a male slip ring and an instrument nipple with a hard connection interface.

According to the technical scheme, the interface conversion nipple for the logging while drilling instrument has the following beneficial effects:

the interface of the utility model can realize the mechanical connection with other short sections, the female slip ring can be used for being electrically connected with the instrument short section with the male slip ring, the adapter head module can be used for being electrically connected with the instrument short section with the hard connection interface, and the female slip ring is electrically connected with the adapter head module, so that the utility model can realize the mechanical and electrical connection between the instrument short section with the male slip ring and the instrument short section with the hard connection interface, thereby realizing the purpose of connecting two short sections which cannot be directly connected in drilling operation.

Drawings

FIG. 1 is a cross-sectional view of an interface of an instrument nipple with a male slip ring of the prior art;

FIG. 2 is a cross-sectional view of a prior art interface of a nipple with a hard-wired interface;

FIG. 3 is a cross-sectional view of an interface conversion nipple for a logging while drilling tool according to an embodiment of the present utility model;

FIG. 4 is a cross-sectional view of a conversion module portion of an embodiment of the present utility model;

fig. 5 is a cross-sectional view of an adapter module portion of an embodiment of the present utility model;

fig. 6 is a cross-sectional view of an adapter portion of an embodiment of the present utility model;

FIG. 7 is a schematic view of a connector according to an embodiment of the present utility model;

the reference numerals in the drawings are: collar nipple 1, interface 11, female slip ring 2, first contact 21, conversion module 3, conversion backbone 31, fluid channel 32, first electrical connection channel 33, double female pin 34, first double male pin 35, second double male pin 36, mating ring hole 37, mating ring 38, adapter module 4, conversion adapter 41, first connection 411, first stop ring 4111, extension 412, second connection 413, adapter 42, third electrical connection channel 421, seal 422, annular retainer 423, first pin 43, second pin 44, second electrical connection channel 45, wire receiving hole 46, third pin 47, fourth pin 48, second insulation sleeve 481, third double male pin 49, second fastening screw 5, connector 6, compression ring 61, locking ring 62, receiving ring 63, relief 64, expansion ramp 65, guide ramp 66.

Detailed Description

In order to better understand the purpose, structure and function of the present utility model, the following describes an interface conversion nipple for a logging while drilling instrument in detail with reference to the accompanying drawings.

The interface of the instrument nipple with the male slip ring is shown in fig. 1, the end part of the male slip ring of the instrument nipple is provided with an electric connection contact, the electric connection contact is used for being connected with electric connection contacts of other nipple, the interface of the instrument nipple is a male interface, and the male interface is used for being connected with female interfaces of other instrument nipple.

The interface of the nipple with the hard connection interface is shown in fig. 2, the front end of the hard connection interface of the instrument nipple is provided with an electric connection contact, the electric connection contact is used for being connected with the electric connection contact of other nipple, the interface of the instrument nipple is a male interface, and the male interface is used for being connected with the female interfaces of other instrument nipple.

Therefore, the short section with the male slip ring and the short section with the hard connection interface cannot be directly connected, when the short section with the male slip ring and the short section with the hard connection interface are required to be connected, a conversion module is required, one end of the conversion module can be electrically and mechanically connected with the short section with the male slip ring, and the other end of the conversion module can be electrically and mechanically connected with the short section with the hard connection interface; the interface conversion nipple for the logging while drilling instrument is used for connecting a nipple with a hard connection interface and a nipple with a male slip ring.

As shown in fig. 3, an interface conversion nipple for a logging while drilling instrument according to an embodiment of the present utility model is shown, including a drill collar nipple 1, a mounting hole extending along an axial direction of the drill collar nipple 1 to penetrate the drill collar nipple 1 is provided on the drill collar nipple 1, a female slip ring 2, a conversion module 3 and an adapter module 4 are provided in the mounting hole, the conversion module 3 is connected with the drill collar nipple 1, the female slip ring 2 is connected with one side of the conversion module 3, the adapter module 4 is connected with the other side of the conversion module 3, the female slip ring 2 is electrically connected with the adapter module 4, the female slip ring 2 is electrically connected with the instrument nipple with a male slip ring, and the adapter module 4 is electrically connected with the instrument nipple with a hard connection interface.

Specifically, the setting of mounting hole is used for placing female sliding ring 2, conversion module 3 and adaptation head module 4, and wherein conversion module 3 and drill collar nipple 1 fixed connection, female sliding ring 2 and adaptation head module 4 are connected with conversion module 3 respectively to realized the purpose of fixing female sliding ring 2, conversion module 3 and adaptation head module 4 in the mounting hole. And the female slip ring 2 is used for being electrically connected with the instrument nipple with the male slip ring, the adapter module 4 is used for being electrically connected with the instrument nipple with the hard connection interface, and the female slip ring 2 is electrically connected with the adapter module 4, so that the electrical connection between the nipple with the hard connection interface and the nipple with the male slip ring is realized.

The two ends of the drill collar pup joint 1 are provided with interfaces 11, and the interfaces 11 are used for being mechanically connected with other instrument pup joints; the interface 11 may be set as two female interfaces, two male interfaces or one male interface and one female interface according to needs, where the interface 11 is used for threaded connection with other instrument pups, specifically, when the drill collar pup 1 of this embodiment is used for connecting the pup joint of fig. 1 and the pup joint of fig. 2, the two interfaces 11 are both female interfaces.

A fluid channel 32 is provided in the conversion module 3, the fluid channel 32 extending through the female slip ring 2 and the adapter module 4. The fluid channel 32 is configured to meet the fluid circulation requirement of the instrument string after connection, and the axis of the fluid channel 32 may be parallel to the axis of the mounting hole when the fluid channel 32 is specifically configured, so that the fluid impact on the converting skeleton 31 is substantially equal, and in addition, the axis of the fluid channel 32 may be coincident with the axis of the mounting hole.

In an embodiment, as shown in fig. 3 and 4, the conversion module 3 includes a conversion skeleton 31, the conversion skeleton 31 is fixedly connected with the drill collar pup joint 1, the conversion skeleton 31 is respectively fixedly connected with the female slip ring 2 and the adapter module 4, and the fluid channel 32 is formed on the conversion skeleton 31; one end of the female slip ring 2, which is far away from the conversion framework 31, is connected with a first contact 21, one end of the adapter module 4, which is far away from the conversion framework 31, is connected with a second contact, the first contact 21 is used for being electrically connected with an instrument nipple with a male slip ring, the second contact is used for being electrically connected with an instrument nipple with a hard connection interface, and the first contact 21 is electrically connected with the second contact.

In this embodiment, the conversion module 3 includes a conversion skeleton 31, the conversion skeleton 31 is fixedly connected in the mounting hole of the drill collar nipple 1, the female slip ring 2 and the adapter module 4 are respectively disposed at two sides of the conversion skeleton 31, the first contact 21 on the female slip ring 2 is electrically connected with the conductive contact on the instrument nipple with the male slip ring, the second contact on the adapter module 4 is electrically connected with the instrument nipple with the hard connection interface, and the first contact 21 and the second contact are electrically connected, so that when the two nipples are connected through the two interfaces, the conductive contact on the instrument nipple with the male slip ring is contacted with the first contact 21, and the conductive contact on the instrument nipple with the hard connection interface is contacted with the second contact, thereby realizing the electrical connection of the two instrument nipples.

In one embodiment, as shown in fig. 4, the conversion frame 31 is provided with a first electrical connection channel 33, and a first electrical connection structure is disposed in the first electrical connection channel 33, and the first contact 21 and the second contact are electrically connected through the first electrical connection structure. In this embodiment, the first contact 21 and the second contact are electrically connected through a first electrical connection structure, and when the first electrical connection structure is specifically set, the first electrical connection structure may be a wire or other wire structure set in the first electrical connection channel 33, and one end of the first electrical connection structure is electrically connected to the first contact 21, and the other end of the first electrical connection structure is electrically connected to the second contact.

In an embodiment, the first electrical connection structure includes a double female pin 34 disposed in the first electrical connection channel 33, a first insulating sleeve is sleeved outside the double female pin 34, the double female pin 34 is connected with a first double male pin 35 and a second double male pin 36, the first double male pin 35 is electrically connected with the first contact 21, the second double male pin 36 is electrically connected with the second contact, a sealing member is disposed between the first double male pin 35 and the switch frame 31, and a sealing member is disposed between the second double male pin 36 and the switch frame 31, and the first double male pin 35 and the second double male pin 36 are respectively fixedly connected with the first electrical connection channel 33.

In this embodiment, the first electrical connection structure includes a double female pin 34, a first double male pin 35 and a second double male pin 36, wherein one end of the double female pin 34 is connected with one end of the first double male pin 35, the other end of the double female pin 34 is connected with one end of the second double male pin 36, the other end of the first double male pin 35 is electrically connected with the first contact 21, and the other end of the second double male pin 36 is electrically connected with the second contact, so that the purpose of electrically connecting the first contact 21 and the second contact through the first electrical connection structure is achieved.

Secondly, the first insulating sleeve is used for realizing insulation between the double female pins 34 and the conversion skeleton 31, and the electrical connection between the other end of the first double male pins 35 and the first contact 21 and between the other end of the second double male pins 36 and the second contact can be realized through conductive wires, that is, the other end of the first double male pins 35 is connected with the first contact 21 through wires, and the other end of the second double male pins 36 is connected with the second contact through wires.

Again, since the double female pins 34 are respectively connected with the first double male pins 35 and the second double male pins 36 in a plugging manner, in order to avoid that fluid enters the first electrical connection channel 33 and corrodes the pins, in this embodiment, sealing elements are disposed between the first double male pins 35 and the switch frame 31, and between the second double male pins 36 and the switch frame 31, and the sealing elements are used for sealing the first electrical connection channel 33, so that fluid is prevented from entering the first electrical connection channel 33.

Finally, in order to avoid the first electrical connection structure moving along the axial direction of the first electrical connection channel 33, the first electrical connection channel 33 is a stepped hole with a large diameter at both ends and a small diameter in the middle, the first double male pins 35 and the second double male pins 36 are respectively located in the holes with a large diameter, the double female pins 34 are arranged in the holes with a small diameter, and the first double male pins 35 and the second double male pins 36 are respectively and fixedly connected with the first electrical connection channel 33, so that the first double male pins 35 and the first electrical connection channel 33 can be fixedly connected through threaded connection, and the second double male pins 36 and the first electrical connection channel 33 can be fixedly connected.

In one embodiment, as shown in fig. 5, the adapter module 4 includes an adapter 41 and an adapter 42, the fluid channel 32 extends to penetrate the adapter 41, the second contact is disposed on the adapter 42 at an end far away from the adapter 41, the adapter 41 is fixedly connected with the switch frame 31, and an end far away from the switch frame 31 of the adapter 41 extends to be fixedly connected with the adapter 42.

In this embodiment, the adapter module 4 includes an adapter 41 and an adapter 42, the adapter 42 is used to mate with the hard-wired interface, and the adapter 41 is used to connect the conversion skeleton 31 and the adapter 42; when the adapter 42 and the hard-wired interface are mated, the second contact makes electrical connection with the conductive contact on the hard-wired interface.

In one embodiment, as shown in fig. 5, the adapter 41 includes a first connection portion 411, an extension portion 412, and a second connection portion 413, where the first connection portion 411 is connected to the adapter frame 31 by a first fastening screw, the second connection portion 413 is screwed to the adapter 42, the fluid channel 32 extends to penetrate the first connection portion 411, and the extension portion 412 is used to connect the annular first connection portion 411 and the second connection portion 413 located in the middle of the mounting hole; the end of the first connecting portion 411, which is close to the conversion frame 31, is connected with a first limiting ring 4111, as shown in fig. 4, and the end of the conversion frame 31, which is close to the conversion connector 41, is provided with a matching annular hole 37, and the matching annular hole 37 is matched with the first limiting ring 4111.

Because the conversion skeleton 31 is fixed in the drill collar nipple 1, the adapter 42 is located in the middle of the mounting hole, so the conversion connector 41 specifically includes an integrally formed first connection portion 411, an extension portion 412 and a second connection portion 413, the fluid channel 32 extends to penetrate the first connection portion 411, the first connection portion 411 and the conversion connector 41 are connected through a first fastening screw, the extension portion 412 is used for connecting the annular first connection portion 411 and the second connection portion 413 located in the middle of the mounting hole, and the second connection portion 413 is in threaded connection with the adapter 42 located in the middle of the mounting hole.

Next, the first connecting portion 411 and the conversion frame 31 are also fitted with the first stopper ring 4111 and the fitting ring hole 37 to achieve the stopper in the diameter direction.

In an embodiment, the adapter 41 is provided with a second electrical connection channel 45, and the second electrical connection channel 45 is provided with a second electrical connection structure for electrically connecting the first contact 21 and the second contact.

The second electrical connection structure in this embodiment is also used for electrically connecting the first contact 21 and the second contact, and based on the known first electrical connection structure and the second electrical connection structure, the first electrical connection structure and the second electrical connection structure can be electrically connected, then the first electrical connection structure is electrically connected with the first contact 21, and the second electrical connection structure is connected with the second contact, so that the electrical connection between the first contact 21 and the second contact can be also realized.

In one embodiment, as shown in fig. 5, the second electrical connection structure for electrically connecting the first contact 21 and the second contact specifically includes a first pin 43 and a second pin 44, the first pin 43 is electrically connected to the first contact 21, the first pin 43 is electrically connected to the second pin 44, and the second pin 44 is electrically connected to the second contact through a wire; the adapter 41 is internally provided with a wire accommodating hole 46, the wire accommodating hole 46 extends to the second contact, and a sealing plug is arranged in the wire accommodating hole 46; a sealing element is disposed between the adapter 41 and the adapter 42, and between the first pin 43 and the second electrical connection channel 45.

In this embodiment, the second electrical connection structure includes a first pin 43 and a second pin 44, where the first pin 43 is electrically connected to the first contact 21, and the first pin 43 is electrically connected to the first electrical connection structure on the premise of the aforementioned known first electrical connection structure, and the second pin 44 is electrically connected to the second contact through a wire, and the wire receiving hole 46 on the adapter 41 is used for receiving the wire.

Specifically, the second electrical connection channel 45 is formed on the first connection portion 411 of the adapter 41, the wire accommodating hole 46 is formed on the extension portion 412 of the adapter 41, and the wire accommodating hole 46 extends to the second connection portion 413 to penetrate the second connection portion 413 to be communicated with the second contact, so that one end of the wire located in the wire accommodating hole 46 can be electrically connected with the second contact, and the wire accommodating hole 46 is communicated with the second electrical connection channel 45, so that the other end of the wire can be electrically connected with the second contact pin 44.

The sealing plug is arranged to prevent fluid in the fluid channel 32 from entering the wire receiving hole 46, the sealing element between the adapter 41 and the adapter 42 is arranged to prevent fluid from entering the wire receiving hole 46, and the sealing element between the first pin 43 and the second electrical connection channel 45 is arranged to prevent fluid from entering the second electrical connection channel 45, so that the problem of fluid corroding the first pin 43 or the second pin 44 is overcome by the arrangement.

In an embodiment, as shown in fig. 5 to 6, a third electrical connection channel 421 is provided in the adapter 42 and is communicated with the wire accommodating hole 46, a third pin 47, a fourth pin 48 and a third double-male pin 49 are sequentially provided in the third electrical connection channel 421, wherein the third pin 47 is electrically connected with the second pin 44 through a wire, a second insulation sleeve 481 is sleeved outside the fourth pin 48, the fourth pin 48 is respectively connected with one ends of the third pin 47 and the third double-male pin 49, and a second contact is provided at the other end of the third double-male pin 49; seals are provided between the third pin 47 and the adapter 42 and between the third double male pin 49 and the adapter 42.

In this embodiment, the second pin 44 is electrically connected to the third double male pin 49 through the third pin 47 and the fourth pin 48 disposed in the third electrical connection channel 421, and the second contact is disposed at the other end of the third double male pin 49. The provision of seals also serves to avoid fluid corrosion of the pins. In a specific arrangement, the third pin 47 and the third double male pin 49 may be fixedly connected to the adapter 42.

In an embodiment, as shown in fig. 3-4, a limit step is arranged on the drill collar nipple 1, one end of the conversion framework 31 is provided with a matching ring 38 matched with the limit step, the other end of the conversion framework 31 is connected with a connecting piece 6, and the connecting piece 6 fixes the conversion framework 31 on the drill collar nipple 1.

Specifically, the cooperation of the limiting step and the mating ring 38 is used to limit the conversion frame 31; the conversion framework 31 is fixed on the drill collar pup joint 1 through the connecting piece 6. Specifically, taking the example that the matching ring 38 is arranged at the right end of the conversion framework 31, the right end of the conversion framework 31 is inserted into the matching position of the matching ring 38 and the limiting step from the left end of the drill collar nipple 1 during specific installation, and then the conversion framework 31 and the drill collar nipple 1 are connected by using the connecting piece 6.

In an embodiment, as shown in fig. 7, the connecting piece 6 includes a compression ring 61, a locking ring 62 and a receiving ring 63 which are sequentially arranged, the receiving ring 63 is used for propping against one end of the conversion skeleton 31 far away from the matching ring 38, one end of the compression ring 61 facing the locking ring 62 is provided with an expansion inclined plane 65, the locking ring 62 is made of elastic materials, the compression ring 61 is connected with the conversion skeleton 31 through a connecting screw, and when the connecting screw is screwed down, the locking ring 62 can elastically expand under the action of the expansion inclined plane 65 and prop against the inner wall of the drill collar nipple 1.

In this embodiment, the locking ring 62 has elasticity, when the expansion inclined plane 65 of the compression ring 61 moves towards the locking ring 62, the locking ring 62 can elastically expand under the action of the expansion inclined plane 65, and finally the locking ring 62 abuts against the inner wall of the drill collar nipple 1, so that one end of the conversion skeleton 31 is limited by the matching ring 38 and the limiting step, and the other end of the conversion skeleton 31 is limited by the locking ring 62, thereby achieving the purpose of fixing the conversion skeleton 31 and the drill collar nipple 1.

Thirdly, the compression ring 61 is connected with the conversion framework 31 through the connecting screw, so that the purpose that the locking ring 62 expands under the action of the expansion inclined plane of the compression ring 61 can be achieved by tightening the connecting screw. In particular, the locking ring 62 may be made of a spring steel material, or may be made of another elastic material such as manganese steel. The side of the locking ring 62 facing the compression ring 61 may be integrally provided with a guide slope 66 engaged with the expansion slope 65 as needed, so that the force of the expansion slope 65 on the locking ring 62 acts on the guide slope 66, and the expansion of the locking ring 62 is achieved by the guide slope 66. In order to smoothly expand the locking ring 62, a relief notch 64 may be formed in the locking ring 62, that is, the locking ring 62 may be configured in a non-closed "C" shape.

By utilizing the elastic expansion of the locking ring 62, friction fixation is formed between the locking ring and the inner wall of the drill collar nipple 1, and compared with the risk that the conversion framework 31 and the drill collar nipple are connected through screws, the fixation mode does not need to punch holes on the drill collar nipple 1, so that the integrity of the drill collar nipple 1 is ensured.

In an embodiment, as shown in fig. 1, the conversion skeleton 31 is connected with the female slip ring 2 through the second fastening screw 5, and at least one group of adjusting gaskets are arranged between the female slip ring 2 and the conversion skeleton 31, and limiting holes for the fastening screws to pass through are arranged on the adjusting gaskets.

In this embodiment, the position of the female slip ring 2 in the axial direction of the mounting hole can be adjusted by increasing or decreasing the number of adjustment shims. The position of the female slip ring 2 can be adjusted so that the conductive ends of the short sections of instruments with different lengths can be contacted with the first contact 21 on the female slip ring 2, and therefore the use suitability is improved. Meanwhile, when the logging instrument string is used for a long time, the number of the adjusting gaskets is increased, the abutting effect of the contact on the instrument nipple and the first contact 21 on the female slip ring 2 can be guaranteed, and the risk of loose buckling of the logging instrument and the conversion nipple can be reduced.

In one embodiment, as shown in fig. 6, a sealing groove is formed on the outer part of the adapter 42, and a first sealing structure is arranged in the sealing groove and is used for sealing the adapter 42 and an instrument nipple connected with the adapter 42; the first sealing structure sealing ring 422, one side or both sides of the sealing ring 422 are provided with annular check rings 423, and the cross section of each annular check ring 423 is triangular.

In this embodiment, a first sealing structure external to the adapter 42 is provided for sealing with the hard-wired interface.

In one embodiment, both interfaces 11 are female interfaces for threaded connection with an instrument nipple with a male slip ring and an instrument nipple with a hard-wired interface.

It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

Furthermore, the terms "a," "an," "the" and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is two or more unless specifically defined otherwise.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (14)

1. The interface conversion nipple for the logging while drilling instrument comprises a drill collar nipple, wherein a mounting hole extending to penetrate through the drill collar nipple along the axial direction of the drill collar nipple is formed in the drill collar nipple; the drill collar is characterized in that interfaces are arranged at two ends of the drill collar pup joint and are used for being mechanically connected with other instrument pup joints;

the device comprises a drill collar short section, a mounting hole, a main sliding ring, a conversion module and an adapter module, wherein the mounting hole is internally provided with the main sliding ring, the conversion module is connected with the drill collar short section, the main sliding ring is connected with one side of the conversion module, the adapter module is connected with the other side of the conversion module, the main sliding ring is electrically connected with the adapter module, the main sliding ring is electrically connected with the instrument short section with a male sliding ring, and the adapter module is electrically connected with the instrument short section with a hard connection interface;

and a fluid channel is arranged in the conversion module and extends to penetrate through the female slip ring and the adapter module.

2. The interface conversion nipple for a logging while drilling instrument of claim 1, wherein the conversion module comprises a conversion skeleton fixedly connected with the drill collar nipple, the conversion skeleton is fixedly connected with the female slip ring and the adapter module respectively, and the fluid channel is formed on the conversion skeleton;

the female sliding ring is kept away from the one end of conversion skeleton is connected with first contact, the adaptation head module is kept away from the one end of conversion skeleton is connected with the second contact, first contact be used for with the instrument nipple joint electric connection that has public sliding ring, the second contact be used for with the instrument nipple joint electric connection that has the hard connection interface, first contact with second contact electric connection.

3. The interface conversion nipple for a logging while drilling instrument according to claim 2, wherein a first electrical connection channel is formed in the conversion framework, a first electrical connection structure is arranged in the first electrical connection channel, and the first contact and the second contact are electrically connected through the first electrical connection structure.

4. The interface conversion nipple for a logging while drilling instrument according to claim 3, wherein the first electrical connection structure comprises a double female pin arranged in the first electrical connection channel, a first insulating sleeve is sleeved outside the double female pin, the double female pin is connected with a first double male pin and a second double male pin, the first double male pin is electrically connected with the first contact, the second double male pin is electrically connected with the second contact, a sealing piece is arranged between the first double male pin and the conversion skeleton, and the second double male pin and the conversion skeleton are fixedly connected with the first electrical connection channel respectively.

5. The interface conversion sub for a logging while drilling instrument of claim 2, wherein the adapter module comprises an adapter and an adapter, the fluid passage extends through the adapter, the second contact is disposed on the adapter at an end of the adapter remote from the adapter, the adapter is fixedly connected to the conversion framework, and the adapter extends to be fixedly connected to the adapter at an end of the adapter remote from the conversion framework.

6. The interface conversion sub for a logging while drilling instrument of claim 5, wherein the conversion sub comprises a first connection portion, an extension portion, and a second connection portion, wherein the first connection portion is connected with the conversion backbone by a first fastening screw, the second connection portion is in threaded connection with the adapter, the fluid channel extends to penetrate the first connection portion, and the extension portion is used for connecting the annular first connection portion and the second connection portion located in the middle of the mounting hole; one end of the first connecting part, which is close to the conversion framework, is connected with a first limiting ring, one end of the conversion framework, which is close to the conversion joint, is provided with a matching annular hole, and the matching annular hole is matched with the first limiting ring.

7. The interface conversion nipple for a logging while drilling instrument of claim 5, wherein a second electrical connection channel is provided in the conversion adapter, and a second electrical connection structure is provided in the second electrical connection channel, the second electrical connection structure being configured to electrically connect the first contact and the second contact.

8. The interface conversion sub for a logging while drilling instrument of claim 7, wherein the second electrical connection structure comprises a first pin and a second pin, the first pin being electrically connected to the first contact, the first pin being electrically connected to the second pin, the second pin being electrically connected to the second contact through a wire; a wire accommodating hole is formed in the adapter, the wire accommodating hole extends to the second contact, and a sealing plug is arranged in the wire accommodating hole; and sealing elements are arranged between the adapter and between the first contact pin and the second electrical connection channel.

9. The interface conversion nipple for a logging while drilling instrument according to claim 8, wherein a third electrical connection channel communicated with the wire accommodating hole is arranged in the adapter head, a third contact pin, a fourth contact pin and a third double-male contact pin are sequentially arranged in the third electrical connection channel, wherein the third contact pin is electrically connected with the second contact pin through a wire, a second insulating sleeve is sleeved outside the fourth contact pin, the fourth contact pin is connected with one ends of the third contact pin and the third double-male contact pin respectively, and the second contact point is arranged at the other end of the third double-male contact pin; and sealing elements are arranged between the third pin and the adapter head and between the third double male pin and the adapter head.

10. The interface conversion nipple for a logging while drilling instrument according to claim 2, wherein a limit step is arranged on the drill collar nipple, one end of the conversion skeleton is provided with a matching ring matched with the limit step, the other end of the conversion skeleton is connected with a connecting piece, and the connecting piece fixes the conversion skeleton on the drill collar nipple.

11. The interface conversion nipple for a logging while drilling instrument according to claim 10, wherein the connecting piece comprises a compression ring, a locking ring and a receiving ring which are sequentially arranged, the receiving ring is used for propping against one end of the conversion skeleton far away from the matching ring, one end of the compression ring, which faces the locking ring, is provided with an expansion inclined plane, the locking ring is made of elastic materials, the compression ring is connected with the conversion skeleton through a connecting screw, and when the connecting screw is screwed down, the locking ring can elastically expand under the action of the expansion inclined plane and propped against the inner wall of the drill collar nipple.

12. The interface conversion nipple for a logging while drilling instrument according to claim 2, wherein the conversion skeleton is connected with the female slip ring through a second fastening screw, at least one group of adjusting gaskets are arranged between the female slip ring and the conversion skeleton, and limiting holes for the fastening screws to pass through are formed in the adjusting gaskets.

13. The interface conversion nipple for a logging while drilling instrument of claim 5, wherein a sealing groove is provided outside the adapter, a first sealing structure is provided in the sealing groove, and the first sealing structure is used for sealing the adapter and an instrument nipple connected with the adapter; the sealing ring with the first sealing structure is characterized in that one side or two sides of the sealing ring are respectively provided with an annular check ring, and the cross section of the annular check ring is triangular.

14. The interface conversion sub for a logging while drilling instrument of claim 1, wherein both of the interfaces are female interfaces for threaded connection with an instrument sub with a male slip ring and an instrument sub with a hard-wired interface.