CN212676525U - Butt plug - Google Patents

Abstract

The embodiment of the disclosure provides a butt joint plug, relate to the logging while drilling technical field, including base and grafting structure, the base includes the bottom, set up in bottom ascending lateral wall in circumference and set up the threading pipe on the lateral wall, bottom and lateral wall enclose into the holding chamber, the threading pipe communicates with the holding chamber, the grafting structure includes contact pin seat and contact pin, the contact pin seat includes relative first surface and the second surface that sets up and connects the side on first surface and second surface, the contact pin wears to locate first surface and second surface, the contact pin seat sets up in the holding intracavity and the side is relative with the lateral wall, the second surface is located between first surface and the bottom, the contact pin and the cable junction who expose in the second surface, the cable is drawn out in the threading pipe. This disclosed embodiment is through setting up the threading pipe on the lateral wall of base, and the cable of being connected with the contact pin is drawn forth through the threading pipe, when butt joint plug erects on subaerial, has reduced the angle of buckling of cable, has effectively prevented the cable and has rolled over the damage, has promoted butt joint plug's life.

Description

Butt plug

Technical Field

The disclosure relates to the technical field of logging while drilling, in particular to a butt plug.

Background

The cable logging instrument is the main means of oil exploration at present, and after the drilling operation is completed, the instrument is lowered to different stratum depths through a cable to collect stratum data, so that the analysis of the crude oil in the stratum is realized. With the increase of the depth, the underground environment becomes more and more complex, and the requirements of the ultrahigh temperature and high pressure environment on instruments are higher and higher. In order to improve the reliability of the instrument, the cable logging instrument needs to be tested in the process of instrument research and development and maintenance, including function test and on-off detection of circuit signals. When the function test of the instrument is carried out on the ground, a butt plug is usually adopted to enable the ground detection system to be quickly plugged with the cable logging instrument.

When the function test and the on-off detection of the circuit signal are carried out, the butt plug is erected on the ground, the joint between the cable of the butt plug and the tail of the butt plug is easily broken, and the service life of the butt plug is shortened.

SUMMERY OF THE UTILITY MODEL

The embodiment of the disclosure provides a docking plug, which can effectively prevent a cable from being broken with the docking plug.

The butt plug provided by the embodiment of the disclosure, including base and grafting structure, the base includes the bottom, set up in bottom circumference ascending lateral wall and set up the threading pipe on the lateral wall, bottom and lateral wall enclose into the holding chamber, the threading pipe communicates with the holding chamber, the grafting structure includes contact pin seat and contact pin, the contact pin seat includes relative first surface and the second surface that sets up and connects the side on first surface and second surface, the contact pin wears to locate first surface and second surface, the contact pin seat sets up in the holding intracavity and the side is relative with the lateral wall, the second surface is located between first surface and the bottom, the contact pin and the cable junction who expose the second surface, the cable draws the threading pipe out.

This disclosed embodiment is through setting up the threading pipe on the lateral wall of base, and the cable of being connected with the contact pin is drawn forth through the threading pipe, when butt joint plug erects on subaerial, has reduced the angle of buckling of cable, has effectively prevented the cable and has rolled over the damage, has promoted butt joint plug's life.

Additional features and advantages of the invention 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 invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the embodiments of the present invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention and not to limit the embodiments of the invention.

FIG. 1 is a block diagram of a docking plug;

FIG. 2 is a block diagram of a docking plug according to an embodiment of the present disclosure;

fig. 3 is a perspective view of a mating plug according to an embodiment of the disclosure;

FIG. 4 is a schematic view of a mating structure of a docking plug and a striking tool according to an embodiment of the present disclosure;

FIG. 5 is a diagram of another arrangement of guide pins and guide plates according to the embodiment of the present disclosure.

Description of the reference numerals

1-a docking plug; 10-a base; 10 a-an impingement plate;

10 b-an annular projection; 11-bottom; 111-connection hole;

112-mounting holes; 1121 — a first aperture region; 1122-second aperture zone;

12-a side wall; 121-annular step; 13-a threading tube;

14-a fixed plate; 141-fixing holes; 15-a guide pin;

20-a plug-in structure; 21-a needle seat; 211 — a first surface;

212-a second surface; 213-side; 22-pin insertion;

30-a cable; 40-a locking structure; 41-locking ring;

42-briquetting; 50-metal connectors; 51-a first body;

52-a second body; 60-a retainer ring; 71-a lock nut;

72-a gland; 80-a protective cover; 81-a cover body;

82-a lid wall; 821-a vent hole; 2-a percussion tool;

2 a-a guide bar; 2 b-a bump block; 2 c-striker bar.

Detailed Description

In order 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.

Fig. 1 is a block diagram of a mating plug. As shown in fig. 1, the docking plug 1 includes a base 10, a pin 22 disposed at the head of the base 10, a cable 30 disposed at the tail of the base 10 and connected to the pin 22, and a striking block 2b sleeved outside the base 10, wherein two striking plates 10a are disposed at an interval on the sidewall of the base 10, and the striking block 2b is disposed between the two striking plates 10 a. An annular projection 10b is provided on the surface of the head striking plate 10a near the base 10 on the side away from the cable 30, the annular projection 10b serving to protect the pin 22. The contact pin 22 is used for being connected with a connector of a cable logging instrument, the cable 30 is used for communicating the ground detection system with the cable logging instrument, and the impact block 2b can slide on the base to impact the impact plate 10a, so that the contact pin and the connector can be conveniently connected and disconnected. When ground detecting system is connected with the cable logging instrument, the butt plug is erect and subaerial, and the contact pin level of butt plug is placed, and the effect that the cable received gravity is flagging, and long-time back of using, the cable is damaged easily with butt plug afterbody handing-over department, influences butt plug's life. In addition, the striking piece generally adopts metal material, because the setting of striking plate, the striking piece can not followed the base and unloaded, and then increased the whole weight of butt joint plug, is unfavorable for the transportation.

The embodiment of the disclosure provides a docking plug, which can effectively prevent cable breakage. The butt joint plug comprises a base and a plug structure, the base comprises a bottom part, a side wall arranged in the circumferential direction of the bottom part and a threading pipe arranged on the side wall, the bottom part and the side wall are enclosed to form a containing cavity, the threading pipe is communicated with the containing cavity, the plug structure comprises a plug pin seat and a contact pin, the plug pin seat comprises a first surface and a second surface which are arranged relatively and a side surface for connecting the first surface and the second surface, the contact pin is arranged on the first surface and the second surface in a penetrating mode, the plug pin seat is arranged in the containing cavity and the side surface is opposite to the side wall, the second surface is located between the first surface and the bottom part, the contact pin exposed on the second surface is connected.

The technical solution of the docking plug according to the embodiment of the present disclosure is exemplarily described below with reference to the accompanying drawings.

FIG. 2 is a block diagram of a docking plug according to an embodiment of the present disclosure; fig. 3 is a perspective view of a mating plug according to an embodiment of the disclosure. As shown in fig. 2 and 3, the docking plug 1 includes a base 10 and a plug structure 20. The base 10 includes a bottom 11, a side wall 12 provided on the circumference of the bottom 11, and a threading pipe 13 provided on the side wall 12. The bottom 11 and the side wall 12 enclose an accommodating cavity which is approximately cylindrical, and the threading pipe 13 is communicated with the accommodating cavity. The plug structure 20 includes a plug seat 21 and a pin 22, the plug seat 21 includes a first surface 211 and a second surface 212 which are oppositely arranged and a side surface 213 for connecting the first surface 211 and the second surface 212, the pin 22 is inserted into the first surface 211 and the second surface 212, the plug seat 21 is arranged in the accommodating cavity, the side surface 213 is opposite to the side wall 12, and the second surface 212 is located between the first surface 211 and the bottom 11. The pins exposed at the second surface 212 are connected to the cable 30, and the cable 30 is led out of the conduit 13. The pins 22 exposed at the first surface 211 mate with the wireline tool connectors and the other end of the cable 30 is connected to a surface testing system.

This disclosed embodiment is through setting up the threading pipe on the lateral wall of base, and the cable of being connected with the contact pin is drawn forth through the threading pipe, and when butt joint plug erects on subaerial, although the cable also can hang down under the action of gravity, nevertheless because the threading pipe is an contained angle with the horizontal direction, compares with the structure of the butt joint plug shown in figure 1, has reduced the angle of buckling of cable, has effectively prevented the cable and has broken down and decrease, has promoted butt joint plug's life.

In an exemplary embodiment, as shown in FIG. 2, the conduit 13 extends in a direction away from the sidewall 12 and toward the bottom 11. In an example, the angle between the threading tube 13 and the side wall 12 may be about 30 ° to 75 °, for example, 45 ° or 60 °, and the specific angle is set according to actual needs, and the exemplary embodiment of the present disclosure is not particularly limited. The pipe diameter of the threading pipe is set according to the cable diameter, and the exemplary embodiment of the disclosure is not particularly limited.

In an exemplary embodiment, as shown in fig. 2, the docking plug 1 further includes a locking structure 40 disposed at the end of the conduit 13, the locking structure 40 being used to lock the cable. Locking structure 40 prevents cable 30 from being pulled during movement of mating plug 1, thereby causing cable 30 to become "virtually" connected to or disconnected from pins 22. In one example, the locking structure 40 includes a locking ring 41 and a pressing block 42, an end portion of a side wall of the locking ring 41 is provided with a notch, an end of the locking ring 41 away from the notch is connected with the threading pipe 13 by screw threads, the cable 30 is threaded through the locking ring 41, and the pressing block 42 is connected with a wall surface of the notch and cooperates with the side wall of the locking ring 41 to clamp the cable 30. In this example, the pressing block 42 may be provided with a through hole, a screw hole is provided on the wall surface of the notch, and the pressing block 42 is fixed on the wall surface of the notch by a screw rod penetrating the through hole and threaded connection with the screw hole.

Fig. 4 is a schematic view of a mating structure of a docking plug and a striking tool according to an embodiment of the disclosure. In an exemplary embodiment, as shown in fig. 4, a connection hole 111 is provided at a center position of a bottom of the base 11 away from a side of the plug structure 20, and the connection hole 111 is used for detachably connecting with the guide bar 2a of the impact tool 2. The attachment hole 111 is a threaded hole. The impact tool 2 further comprises an impact block 2b sleeved outside the guide rod 2a and connected with the guide rod 2a in a sliding mode. When the docking plug 1 is plugged with a connector of a cable logging instrument, the guide rod 2a is connected with the connecting hole 111, and the impact block 2b can reciprocate along the guide rod 2a and impact the bottom 11 of the base 10, so that the docking plug 1 is firmly plugged with the connector. And the guide rod 2a can be also provided with a striking rod 2c, and when the butt plug 1 is disconnected with a connector of a cable logging instrument, the striking block 2b can strike the striking rod 2c, so that the butt plug 1 is smoothly pulled out. The striker 2c is provided at an end portion of the guide bar 2a away from the connection end connected to the connection hole 111, and the guide bar 2a and the striker 2c form a T-shaped structure. In this example, the impact block 2b is not provided on the docking plug 1 as an auxiliary tool, thereby reducing the weight of the docking plug 1, and further, since the length of the guide bar can be freely set, the problem of the shortest stroke when the impact block 2b moves is not considered in the base design, compared to the docking plug shown in fig. 1.

The base may be made of metallic aluminum, thereby reducing the weight of the entire docking plug. However, the aluminum alloy is easy to wear after being connected with the guide rod for many times due to the general wear resistance of the aluminum alloy.

In an exemplary embodiment, as shown in fig. 4, the docking plug 1 includes a through hole 112 disposed at a central position of a side of the bottom 11 of the base 10 away from the plugging structure 20 and a metal connector 50 disposed in the through hole 112, a connection hole 111 is disposed on a surface of the side of the metal connector 50 away from the plugging structure 20, the connection hole 111 is used for connecting with the guide bar 2a, and a material of the metal connector 50 includes metallic copper, high manganese steel or nickel tungsten alloy. In order to enhance the tensile strength of the metal connecting member, the penetrating hole 112 is a through hole, the penetrating hole 112 includes a first aperture region 1121 and a second aperture region 1122, a distance between the first aperture region 1121 and the inserting structure 20 is smaller than a distance between the second aperture region 1122 and the inserting structure 20, an aperture of the first aperture region 1121 is larger than an aperture of the second aperture region 1122, a step is formed between the first aperture region 1121 and the second aperture region 1122, the metal connecting member 50 includes a first body 51 and a second body 52, a diameter of the first body 51 is larger than a diameter of the second body 52, the first body 51 is embedded into the first aperture region 1121, the second body 52 is embedded into the second aperture region 1122, an end surface of the first body 51 close to the second body 52 abuts against the step, and the connecting hole 111 is at least disposed in the second body 52. In the present example of the present invention,

in order to prevent the metal connecting element 50 from loosening, in an exemplary embodiment, as shown in fig. 2, the mating plug 1 further includes a retainer ring 60 disposed on a side of the metal connecting element 50 adjacent to the plug structure 20, and the retainer ring 60 is inserted into the through hole 112 and is threadedly coupled with the through hole 112.

The connecting hole of the embodiment can be a non-through hole, so that foreign matters are prevented from entering the accommodating cavity. The metal connecting piece is in threaded connection with the bottom, and the connecting hole is a threaded hole.

In an exemplary embodiment, as shown in fig. 2, the docking plug 1 further includes a lock nut 71 and a gland 72, the inner side of the sidewall of the base 10 is provided with an annular step 121, the second surface 212 of the receptacle 21 is seated on the annular step 121, the lock nut 71 is screwed with the sidewall 12, the gland 72 is disposed between the lock nut 71 and the receptacle 21, and the first surface 211 of the receptacle 21 is pressed under the pressing of the lock nut 71. The gland 72 includes a plurality of through holes corresponding in position and number to the pins 22. The pin 22 may be a male pin that extends out of the first surface 211 and is disposed through the through hole of the cover 72. The number of the pins can be 48, or can be 36, 12 or 6, etc., according to the actual requirement. Alternatively, the pins 22 may be female pins corresponding to the location and number of the through holes. Alternatively, the end of the pin 22 exposed on the first surface 211 is a male end, and the end exposed on the second surface 212 is a female end.

In an exemplary embodiment, as shown in fig. 2, the base 10 further includes a fixing plate 14 disposed on the periphery of the sidewall 12 and extending in a direction away from the receiving cavity, and a guide pin 15 disposed on a surface of the fixing plate 14 away from the bottom 11, wherein the guide pin 15 is matched with the contact pin 22 to precisely align the contact pin of the mating plug with the contact pin of the connector of the wireline logging tool. In the detection process, the guide pin can bear certain force to prevent the contact pin from deforming. In one example, the surface of the retaining plate 14 on the side away from the base 11 is flush with the end surface of the side wall 12 away from the base 11. Because there is the difference in the different nipple joint contact pin positions of cable logging instrument, need a plurality of butt joint plugs when carrying out functional test to each nipple joint, lead to butt joint plug's commonality relatively poor, wasted more time and manpower. FIG. 5 is a diagram of another arrangement of guide pins and guide plates according to the embodiment of the present disclosure. In another example, as shown in fig. 5, a plurality of fixing holes 141 are provided on the fixing plate 14, and the guide pins 15 are detachably coupled to the fixing holes 141. When the mating plug is connected with the connector, the guide pin 15 can be fixed by selecting a proper fixing hole 141, and since the outer circumference of the fixing plate 14 is not provided with the annular protrusion, compared with the mating plug shown in fig. 1, an open structure is formed, thereby increasing the versatility of the mating plug. The plurality of fixing holes may be arranged along a circumferential direction of the fixing plate and form a plurality of concentrically arranged rows.

In order to prevent the pins exposed outside the base from being damaged during the transportation process, in an exemplary embodiment, the docking plug 1 further includes a protection cover 80, and the protection cover 80 is disposed outside the fixing plate 14 and covers the pins 22 exposed on the first surface 211. In one example, the protection cover 80 includes a cover head 81 and a cover wall 82 disposed on a circumferential direction of the cover head 81, the cover wall 82 is sleeved outside the fixing plate 14, and the cover wall 82 is provided with a vent 821. The air hole 821 can ensure the space between the protection cover 80 and the base 10 to be communicated with the atmospheric pressure, and is beneficial to the installation and the detachment of the protection cover 80.

The technical solution of the whole docking plug of the present disclosure is exemplified by the operation principle of the docking plug.

The cable logging instrument is erected on the ground, and a ground testing system is connected with the contact pin 22 on the butt plug 1 through the cable 30 penetrating the threading pipe 13. The protection cover 80 on the butt plug 1 is detached, the contact pin 22 is exposed, the contact pin 22 and the guide pin 15 are plugged with the contact pin and the guide hole on the connector of the functional short section of the cable logging instrument, in the plugging process, the connecting hole 111 on the bottom 11 of the base 10 can be connected with the guide rod 2a of the impact tool 2, and the impact block 2b slides along the guide rod 2a to impact the bottom 11, so that the butt plug 1 is reliably connected with the connector. After the test is completed, because the plugging force between the docking plug 1 and the plug connector is large, the docking plug 1 is difficult to be pulled out when the docking plug 1 is separated from the plug connector, therefore, the connection hole 111 on the bottom 11 of the base 10 can be connected with the guide rod 2a of the impact tool 2, and the impact block 2b slides along the guide rod 2a to impact the impact rod 2c, so that the docking plug 1 is pulled out.

Can find out through this disclosed embodiment docking plug's theory of operation, docking plug pegs graft in the plug connector, because the cable is worn to locate to set up in the threading pipe on the lateral wall of base, compares with the docking plug that the cable is located the base bottom, and the cable is under the action of gravity, and the angle of buckling of cable is less, has effectively prevented the cable and has broken down, has promoted docking plug's life. In addition, as the cable is led out from the bottom of the base, the bottom of the base vacates a space allowing the impact block to impact, and the bottom of the base is provided with a connecting hole connected with a guide rod of an impact tool, so that the impact block is independently arranged without being arranged on the base, and the weight of the butt plug is reduced.

In the description of the present invention, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", "mouth" word structure "and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the structure referred to has a specific orientation, is constructed and operated in a specific orientation, and thus, is not to 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," "directly connected," "indirectly connected," "fixedly connected," "mounted," and "assembled" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; the terms "mounted," "connected," and "fixedly connected" may be directly connected or indirectly connected through intervening media, or may be connected through two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Although the embodiments of the present invention have been described above, the description is only for the convenience of understanding the present invention, and the present invention is not limited thereto. 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 invention as defined by the appended claims.

Claims (10)

1. The utility model provides a butt plug, its characterized in that, includes base and grafting structure, the base include the bottom, set up in bottom circumference ascending lateral wall with set up in threading pipe on the lateral wall, the bottom with the lateral wall encloses into the holding chamber, the threading pipe with holding chamber intercommunication, grafting structure includes contact pin seat and contact pin, the contact pin seat includes relative first surface and the second surface that sets up and connects the first surface with the side of second surface, the contact pin wears to locate the first surface with the second surface, the contact pin seat set up in the holding intracavity and the side with the lateral wall is relative, the second surface is located the first surface with between the bottom, expose in the contact pin and the cable junction on second surface, the cable is drawn in the threading pipe.

2. A docking plug according to claim 1, wherein: the threading tube extends in a direction away from the side wall and toward the bottom.

3. A docking plug according to claim 2, wherein: the included angle between the threading pipe and the side wall is 30-75 degrees.

4. A docking plug according to any one of claims 1-3 wherein: the bottom of base is kept away from the central point of grafting structure one side puts and sets up the connecting hole, the connecting hole is used for dismantling with the guide bar of striking instrument and is connected.

5. A docking plug according to any one of claims 1-3 wherein: the butt-joint plug further comprises a penetrating hole and a metal connecting piece, the penetrating hole is formed in the center of one side, far away from the inserting structure, of the bottom of the base, the metal connecting piece is arranged in the penetrating hole, a connecting hole is formed in the surface, far away from one side of the inserting structure, of the metal connecting piece, and the connecting hole is used for being detachably connected with a guide rod of an impact tool.

6. A docking plug according to claim 5, wherein: the through hole is a through hole and comprises a first aperture area and a second aperture area, the distance between the first aperture area and the inserting structure is smaller than the distance between the second aperture area and the inserting structure, the aperture of the first aperture area is larger than that of the second aperture area, a step is formed between the first aperture area and the second aperture area, the metal connecting piece comprises a first body and a second body, the diameter of the first body is larger than that of the second body, the first body is embedded into the first aperture area, the second body is embedded into the second aperture area, the end face of the first body, close to the second body, is abutted to the step, and the connecting hole is at least formed in the second body.

7. A docking plug according to claim 5, wherein: the butt plug further comprises a check ring arranged on one side, close to the inserting structure, of the metal connecting piece, and the check ring is embedded into the penetrating hole and is in threaded connection with the penetrating hole.

8. A docking plug according to any one of claims 1-3 wherein: the base further comprises a fixing plate and a guide pin, the fixing plate is arranged on the periphery of the side wall and extends along the direction far away from the containing cavity, and the guide pin is arranged on the surface, far away from one side of the bottom, of the fixing plate.

9. A docking plug according to claim 8, wherein: the fixed plate is provided with a plurality of fixed holes, and the guide pin is detachably connected with the fixed holes.

10. A docking plug according to any one of claims 1-3 wherein: the butt-joint plug further comprises a locking nut and a gland, an annular step is arranged on the inner side of the side wall of the base, a second surface seat of the plug pin seat is arranged on the annular step, the locking nut is in threaded connection with the side wall, the gland is arranged between the locking nut and the plug pin seat, and the first surface of the plug pin seat is pressed tightly under the extrusion of the locking nut.

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