CN206309381U - Adapter between cable bridle and downhole testing instrument - Google Patents

Abstract

The utility model discloses a cable bridle and test instrument's adapter in pit belongs to oil logging technical field. This adapter includes: the main body is provided with a central through hole and comprises a cable bridle joint with phi 21 mm, a main body and a 16-arm well diameter testing instrument joint which are sequentially connected; the socket is sleeved in the central through hole of the main body in a clearance mode and comprises a hollow cylinder and two insertion holes arranged at two ends of the hollow cylinder, and the two insertion holes are respectively used for being matched with a cable bridle with the diameter of 21 mm and a communication plug of a 16-arm well diameter testing instrument in an electrical insertion mode; and the insulating clamping piece is arranged in a gap between the main body and the socket to insulate the main body and the socket. The adapter can connect the cable bridle with the diameter of 21 mm in phi with a 16-arm well diameter testing instrument, avoids using the cable bridle with the diameter of 42 mm in phi, and is time-saving, labor-saving and cost-reducing.

Description

Adapter between cable bridle and downhole testing instrument

technical field

The utility model relates to the technical field of petroleum well logging, in particular to a cable bridle and an adapter for downhole testing instruments.

Background technique

In the field of oil well logging, well logging cables are usually used to connect the uphole control system (such as computers installed on the cable test vehicle, ground numerical control instruments, etc.) and downhole testing instruments for the logging process. Armored cable, and use the cable bridle as the connection between the single-core armored cable and the test instrument.

Eccentric well fluid production profile test and 16-arm caliper test are the main test items in petroleum logging. Among them, for eccentric well fluid production profile test, it uses a Ф21 mm cable horse bridle (the diameter of the connection head is 21 mm) After connecting with Ф21 mm eccentric well fluid production profile testing instrument (connector diameter is 21 mm), downhole data is collected from Ф30 mm eccentric test hole and downhole test layer through oil casing annular space. For the 16-arm caliper test, it uses a Ф42 mm cable bridle (the diameter of the connecting head is 42 mm) to connect with a Ф42 mm 16-arm caliper testing instrument (the diameter of the connecting head is 42 mm). The casing of the oil layer is lowered to the test layer in the well to record downhole data. The above Ф21mm cable bridle and Ф42mm cable bridle cannot be used in common use. For the same cable test vehicle, when switching between the two test items of eccentric well fluid production profile test and 16-arm well diameter test, it is necessary to Replace the corresponding cable bridle for specific test items.

The designer finds that the prior art has at least the following problems:

When the test items are converted based on the same cable test vehicle, the corresponding cable bridle needs to be re-armored, which is time-consuming and laborious, and the use of two kinds of cable bridles also increases the test cost.

Utility model content

The technical problem to be solved by the embodiment of the utility model is to provide an adapter between a cable bridle and a downhole testing instrument, which can connect a Ф21 mm cable bridle to a 16-arm well diameter testing instrument, avoiding the use of a Ф42 mm The unique cable bridle saves time, effort and reduces costs. The specific technical scheme is as follows:

An adapter between a cable bridle and a downhole testing instrument, the adapter includes: a main body with a central through hole, the main body includes a Ф21mm cable bridle joint, a body, and a 16-arm borehole caliper testing instrument connected in sequence connector;

The socket, which is sleeved in the central through hole of the main body, includes a hollow cylinder and two sockets arranged at both ends of the hollow cylinder, and the two sockets are respectively used for connecting with Ф21mm The cable bridle and the communication plug of the 16-arm caliper testing instrument are electrically plugged together;

The insulating clip is arranged in the gap between the main body and the socket to insulate the main body and the socket.

Specifically, as a preference, a first annular step is provided on the inner wall of the central through hole inside the Ф21 mm cable bridle joint;

A second annular step is provided on the inner wall of the central through hole inside the joint of the 16-arm caliper testing instrument;

The insulating clip includes: an annular chuck, a cylindrical body concentrically connected with the annular chuck;

Using two insulating clips, the two annular chucks are respectively clamped on the first annular step and the second annular step, and the two cylindrical bodies are sealed and inserted into the main body and the second annular step respectively. in the gap between the receptacles.

Specifically, preferably, the two sockets each include a socket portion and a cylindrical connection portion connected in sequence;

The cylindrical connecting parts of the two jacks are threadedly connected to both ends of the inner cavity of the hollow cylinder respectively.

Specifically, preferably, the diameter of the inner ring of the ring chuck is smaller than or equal to the outer diameter of the hollow cylinder.

Specifically, as a preference, the jack part of one of the jacks is provided with a cylindrical jack, which is used for electrical insertion with the communication plug of the Ф21 mm cable bridle;

The jack portion of the other jack is provided with a regular prismatic jack, which is used for electrical insertion with the communication plug of the 16-arm borehole caliper testing instrument.

Specifically, as a preference, the outer wall of the end of the Ф21 mm cable bridle joint is provided with an external thread that is threadedly connected to the connector of the Ф21 mm cable bridle;

The outer wall of the end part of the joint of the 16-arm caliper testing instrument is provided with an external thread that is threadedly connected with the connecting head of the 16-arm caliper testing instrument.

Specifically, as a preference, at least one circle of grooves is provided on the outer wall of the cable bridle joint of Ф21 mm and the joint of the 16-arm borehole testing instrument, and a sealing ring is provided in the groove.

Specifically, preferably, a wrench slot is provided on the outer wall of the body.

The beneficial effects brought by the technical solution provided by the embodiment of the utility model are:

The adapter provided by the embodiment of the utility model can freely switch between the 16-arm well diameter test and the liquid production profile test of the eccentric well under the premise of using the same set of uphole control system. Armored, easy to operate, and low cost, easy to scale popularization and application.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For example, those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative efforts.

Fig. 1 is the sectional view of the adapter of cable bridle and downhole test instrument that the utility model embodiment provides;

Fig. 2 is a cross-sectional view of the insulating clip provided by the embodiment of the present invention.

The reference signs represent respectively:

1 subject,

101 Ф21 mm cable bridle joints,

102 body,

1021 Wrench slot,

103 16-arm caliper connector,

2 outlets,

201 hollow cylinder,

202 jack,

2021 Jack Division,

2022 Column connection,

3 Insulation clips,

301 ring chuck,

302 barrel body.

detailed description

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the implementation of the present utility model will be further described in detail below in conjunction with the accompanying drawings.

The embodiment of the utility model provides an adapter between a cable bridle and a downhole testing instrument. As shown in Figure 1, the adapter includes a main body 1 with a central through hole, a socket 2, and an insulating clip 3, wherein, The main body 1 includes a Ф21 mm cable bridle joint 101, a main body 102, and a 16-arm caliper test instrument joint 103 connected in sequence; And two jacks 202 are provided at both ends of the hollow cylinder 201, and the two jacks 202 are respectively used for electrical plugging with the cable bridle of Ф21 mm and the communication plug of the 16-arm borehole testing instrument; In the gap between the main body 1 and the socket 2, the main body 1 and the socket 2 are insulated.

At present, a set of uphole control system (such as using a cable test drawworks) and a set of cables are usually used for eccentric well fluid production profile test and 16-arm caliper test. When performing eccentric well fluid production profile test, the cable and After the Ф21mm cable bridle is armored, it is connected to the Ф21mm eccentric well fluid production profile testing instrument, and then the downhole data is collected from the Ф30mm eccentric test hole and through the annular space of the oil casing to the test layer in the well. When carrying out the 16-arm caliper test, the existing technology generally removes the Ф21 mm cable bridle, then re-armors the cable with the Ф42 mm cable bridle, and then connects with the Ф42 mm 16-arm caliper testing instrument Afterwards, downhole data was collected from the oil layer casing with an inner diameter of 124 mm to the test layer in the well, and it was time-consuming and laborious to re-armor the cable bridle.

Based on the purpose of solving the above-mentioned technical problems, the embodiment of the utility model provides an adapter according to the structure of the Ф21mm cable bridle and the 16-arm caliper testing instrument. When testing the borehole diameter of the boom, it is not necessary to remove the Ф21mm cable bridle from the cable, avoid using the Ф42mm cable bridle, and only use the Ф21mm cable bridle connector 101 of the adapter and the Ф21mm cable bridle The connection head of the bridle is connected, and at the same time, the communication plug of the Ф21 mm cable bridle is correspondingly inserted into a jack 202 of the socket 2; The connectors are connected, and at the same time, the communication plug of the 16-arm caliper testing instrument is correspondingly inserted into another jack 202 of the socket 2 . At this time, the cable, the Ф21mm cable bridle, the socket 2, and the 16-arm caliper testing instrument are electrically connected in sequence, and the 16-arm caliper test can be performed. It can be seen that using the adapter provided by the embodiment of the utility model can freely switch between the 16-arm well diameter test and the eccentric well fluid production profile test under the premise of using the same set of uphole control system (such as a cable test drawworks), which is easy to operate. The armoring of cables and different cable bridles does not need to be performed frequently, the operation is simple, and the cost is low, which is convenient for large-scale popularization and application.

There is a gap between the main body 1 and the socket 2, and an insulating clip 3 is provided in the gap between the main body 1 and the socket 2 to ensure insulation between the main body 1 and the socket 2, so that the main body 1 acts as a negative pole, while Receptacle 2 is used as positive to ensure that the cable test is working properly. The material of the main body 1 can be stainless steel which is common in the field, which has high strength and good wear resistance, and the material of the socket 2 can be copper which is common in the field and has excellent electrical conductivity. It can be understood that one jack 202 of the socket 2 is located in the central through hole inside the Ф21 mm cable bridle joint 101 , and the other jack 202 is located in the central through hole inside the 16-arm caliper joint 103 .

Preferably, a first annular step is provided on the inner wall of the central through hole inside the Ф21 mm cable bridle joint 101 ; a second annular step is provided on the inner wall of the central through hole inside the 16-arm caliper test instrument joint 103 . As shown in FIG. 2 , the insulating clip 3 includes: an annular chuck 301 , and a cylindrical body 302 concentrically connected with the annular chuck 301 . Two ring chucks 301 are respectively clamped on the first ring step and the second ring step, and two cylindrical bodies 302 are sealed and inserted into the gap between the main body 1 and the socket 2 respectively. It can be understood that the formation of the first annular step and the second annular step is formed by changing the inner diameter of the central through hole in the main body 1 at a specific position, as shown in Figure 1, through the upper part of the central through hole inside the main body 1 and The lower part is respectively provided with annular steps, so that the annular clamp head 301 of the insulating clip 3 can be clamped on the surface of the annular step, and at the same time, the cylindrical body 302 is respectively sealed and inserted into the gap between the main body 1 and the socket 2 to ensure that the insulating clamp The stability of the placement of the connector 3 ensures that the socket 2 can be stably placed in the central through hole of the main body 1 under the extrusion of the cylindrical body 302 .

Further, the two insertion holes 202 each include an insertion hole portion 2021 and a cylindrical connection portion 2022 , and the cylindrical connection portions 2022 of the two insertion holes 202 are threadedly connected to both ends of the inner cavity of the hollow cylinder 201 . By connecting the cylindrical connecting part 2022 of the socket 202 with the hollow cylindrical body 202 in a threaded manner, not only the tightness of the connection between them is ensured, but also the insulating clip 3 is sleeved on the cylindrical connecting part 2022. , which facilitates assembly. Preferably, the directions of the external threads provided at the two ends of the cylindrical connecting portion 2022 are opposite (that is, one end is set as a male button, and the other end is set as a female button), so that it is convenient to thread one end of the cylindrical connecting portion 2022 earlier ( For example, rotate clockwise), and then perform screw connection on the other end of the cylindrical connecting portion 2022 (for example, counterclockwise) on the premise that the fastness of the aforementioned threaded connection is not affected.

The cylindrical connection part 2022 is a hollow cylindrical structure, preferably the outer diameter of the insertion hole 2021 is slightly larger than the outer diameter of the cylindrical connection part 2022, so that the end surface of the insertion hole 2021 can be against the ring of the insulating clip 3 Card head 301.

Further, the diameter of the inner ring of the ring chuck 301 is smaller than or equal to the outer diameter of the hollow cylinder 201, so that one end of the ring chuck 301 can abut against the end face of the hollow cylinder 201, and at the same time, the other end can abut against the insertion hole 2021 , under the cooperative action of the socket portion 2021 and the hollow cylinder 201 , the annular chuck 301 is pressed against and clamped, so as to realize the stable isolation of the insulating clip 3 . It can be understood that the inner diameter of the cylindrical body 302 of the insulating clip 3 is adapted to the outer diameter of the hollow cylinder 201 to achieve close contact between the two.

Based on the Ф21mm cable bridle and the communication plug structure of the 16-arm caliper testing instrument, in general, it is necessary to make the jack part 2021 of the jack 202 outside the Ф21mm cable bridle joint 101, and make the jack 202 The socket part 2021 is located inside the 16-arm borehole caliper testing instrument connector 103, so as to facilitate their corresponding electrical insertion with the corresponding communication plug. In this case, in order to facilitate the assembly of the adapter, the hollow cylinder 201 can first be fitted with the insulating clip 3, and then screwed to the cylindrical connecting portion 2022 of one of the jacks 202, then the 16-arm well diameter The direction of the testing instrument connector 103 is inserted into the central through hole of the main body 1 until the ring chuck 301 of the insulating clip 3 abuts against the second ring step. Then put another insulating clip 3 on the cylindrical connecting part 2022 of the other socket 202, and then insert the cylindrical connecting part 2022 into the central through hole of the main body 1 from the direction of the Ф21 mm cable bridle joint 101 And enter the inner cavity of the hollow cylinder 201 to be screwed with it, until the ring chuck 301 of the insulating clip 3 at this position is against the first annular step, so that the assembly of the adapter can be easily realized.

Since the communication plugs of the Ф21 mm cable bridle provided in the prior art are mostly cylindrical plugs, and the communication plugs of the 16-arm borehole diameter testing instrument are mostly hexagonal cylindrical plugs, in order to make them fit tightly with the jack 201, In the embodiment of the utility model, the jack portion 2021 of one jack 202 is provided with a cylindrical jack, which is used for electrical plugging with a communication plug of a cable bridle with a diameter of 21 mm; the jack portion 2021 of the other jack 202 It is provided with a positive prismatic jack, which is used for electrical insertion with the communication plug of the 16-arm borehole caliper testing instrument.

Further, the Ф21 mm cable bridle and the 16-arm caliper testing instrument are also provided with a hollow cylindrical connector around their respective communication plugs (that is, the communication plug is at the inner center of the hollow cylindrical connector), which Internal threads are provided on the inner wall. Based on this, in order to ensure that the adapter is firmly connected with the Ф21 mm cable bridle and the 16-arm borehole caliper test instrument, the outer wall of the end of the Ф21 mm cable bridle joint 101 is provided with a screw for connecting with the Ф21 mm The outer thread of the connector threaded connection of the cable bridle of mm (for example, the thread of M17*1); the outer wall of the end part of the 16-arm caliper test instrument connector 103 is provided with the threaded connection of the connector head of the 16-arm caliper test instrument The external thread (for example, the thread with the specification of M33*1.5), so as to ensure the threaded connection between them. As a preference, at least one circle of grooves (such as 2 circles, 3 circles, etc.) is provided on the outer wall of the Ф21 mm cable bridle joint 101 and the 16-arm caliper test instrument joint 103, and a sealing ring is arranged in the groove. This can ensure the tightness of the connection between the adapter and the Ф21mm cable bridle and the 16-arm caliper testing instrument, preventing liquid from entering during the test and causing the test process to be interrupted. It can be understood that the position of the groove on the outer wall of the cable bridle joint 101 of Ф21 mm and the joint 103 of the 16-arm borehole testing instrument is not the same as the position of the external thread on the outer wall.

Further, as shown in Figure 1, the utility model embodiment is also provided with a wrench groove 1021 on the outer wall of the main body 102 of the main body 1, so that the main body 1 can be rotated in the wrench groove 1021 with a wrench, so that it can be easily aligned with Ф21 mm Threaded connection between the cable bridle and the 16-arm caliper instrument.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be Included within the protection scope of the present utility model.

Claims (8)

1. An adapter for a cable bridle and a downhole testing instrument, characterized in that the adapter includes: a main body (1) with a central through hole, and the main body (1) includes cables of Ф21 mm connected in sequence Bridle joint (101), body (102), 16-arm caliper test instrument joint (103); The socket (2) which is sleeved in the central through hole of the main body (1) includes a hollow cylinder (201) and two sockets (202) arranged at both ends of the hollow cylinder (201). ), the two jacks (202) are respectively used for electrical insertion with the cable bridle of Ф21 mm and the communication plug of the 16-arm caliper testing instrument; The insulating clip (3) is arranged in the gap between the main body (1) and the socket (2) to insulate the main body (1) and the socket (2). 2. The adapter according to claim 1, characterized in that a first annular step is provided on the inner wall of the central through hole inside the Ф21 mm cable bridle joint (101); A second annular step is arranged on the inner wall of the central through hole inside the 16-arm caliper testing instrument joint (103); The insulating clip (3) includes: an annular chuck (301), a cylindrical body (302) concentrically connected with the annular chuck (301); Using two insulating clips (3), the two annular chucks (301) are respectively clamped on the first annular step and the second annular step, and the two cylindrical bodies (302 ) are respectively sealed and inserted into the gap between the main body (1) and the socket (2). 3. The adapter according to claim 2, characterized in that, the two sockets (202) each include a sequentially connected socket portion (2021) and a cylindrical connection portion (2022); The cylindrical connection parts (2022) of the two insertion holes (202) are threadedly connected to both ends of the inner cavity of the hollow cylinder (201). 4. The adapter according to claim 3, characterized in that, the diameter of the inner ring of the annular chuck (301) is smaller than or equal to the outer diameter of the hollow cylinder (201). 5. The adapter according to claim 3, characterized in that, the jack portion (2021) of one of the jacks (202) is provided with a cylindrical jack for connecting with the cable bridle of Ф21 mm The communication plug is matched with the electric socket; The jack part ( 2021 ) of the other jack ( 202 ) is provided with a regular prismatic jack, which is used for electrical plugging in cooperation with the communication plug of the 16-arm caliper testing instrument. 6. The adapter according to claim 1, characterized in that, the outer wall of the end portion of the Ф21 mm cable bridle joint (101) is provided with a threaded connection with the connector of the Ф21 mm cable bridle. external thread; The outer wall of the end portion of the 16-arm caliper testing instrument joint (103) is provided with an external thread that is threadedly connected with the connecting head of the 16-arm caliper testing instrument. 7. The adapter according to claim 6, characterized in that there is at least one ring on the outer wall of the Ф21 mm cable bridle joint (101) and the 16-arm caliper test instrument joint (103) A groove, a sealing ring is arranged in the groove. 8. The adapter according to claim 1, characterized in that, a wrench slot (1021) is provided on the outer wall of the body (102).