CN210948575U

CN210948575U - Cable-passing washable well packer easy to assemble

Info

Publication number: CN210948575U
Application number: CN201921906871.4U
Authority: CN
Inventors: 史玲春
Original assignee: Daqing Hongbo Shengda Petroleum Machinery Equipment Co ltd
Current assignee: Daqing Hongbo Shengda Petroleum Machinery Equipment Co ltd
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-07-07
Anticipated expiration: 2029-11-07

Abstract

The utility model provides an easily assemble cable washable well packer, relates to oil field downhole tool technical field, including top connection, center tube, lower clutch and cable, top connection and lower clutch respectively through threaded connection at the upper and lower both ends of center tube, respectively are provided with a cable joint on top connection and the lower clutch, and the inboard of center tube is provided with the bushing pipe, leaves the space that the power cable passes through between center tube and the bushing pipe, the external diameter of bushing pipe equal the internal diameter of center tube, the cable duct has been seted up in the outside of bushing pipe, the length direction of cable duct is parallel with the axis of bushing pipe, the cable hold in the cable duct. The utility model discloses a change the inboard cable structure that crosses of center tube, make the cable pass along the straight line in the center tube, not only the cable is worn out from the other end of center tube very easily, has reduced the assembly degree of difficulty of cable, has reduced the quantity of cable moreover, has reduced the cable cost. And simultaneously, the utility model discloses still effectively reduce part quantity, further reduced manufacturing cost.

Description

Cable-passing washable well packer easy to assemble

Technical Field

The utility model belongs to the technical field of the oil field instrument in the pit, especially, relate to an easily assembly cross cable washable well packer.

Background

The cable-passing packer is a downhole tool commonly used in oil extraction engineering, and is different from a common packer in that a cable-passing structure is arranged in the cable-passing packer, so that a cable can enter the interior of the packer from the upper side of the packer and penetrate out from the lower side of the packer.

The utility model discloses a patent number CN 201821108705.5's utility model discloses a cable packer is a very practical cable packer, and in this kind of packer, the inboard of center tube has set up the bushing pipe, and the both ends of bushing pipe are passed through the support ring and are connected with the center tube, are provided with the annular space that supplies the cable to pass between center tube and the bushing pipe. The drawbacks of this over-cable construction are: steel happy cable that uses in cable packer itself has certain crookedness, when the clearance between toward center tube and bushing pipe was worn, must can present the screw state of certain degree, and this kind of screw state makes the position of cable break-out end difficult to control, leads to the cable break-out end often to push up on the support ring and is difficult to wear out from the other end of center tube, has increased the degree of difficulty for the assembly of cable. In addition, steel-sheathed cables are expensive and the helical condition described above necessarily increases the cost of the cable.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem who exists among the background art, the utility model provides an easily assemble cable washable well packer.

The utility model provides a technical problem adopt following technical scheme to realize: the utility model provides an easy-to-assemble cable washable well packer, including top connection, center tube, lower clutch and cable, top connection and lower clutch are respectively through threaded connection in the upper and lower both ends of center tube, respectively are provided with a cable joint on top connection and the lower clutch, and the inboard of center tube is provided with the bushing pipe, leaves the space that the power cable passes through between center tube and the bushing pipe, the external diameter of bushing pipe equal to the internal diameter of center tube, the cable duct has been seted up in the outside of bushing pipe, the length direction of cable duct is parallel with the axis of bushing pipe, the cable hold in the cable duct;

and a flange is processed on the outer side of the upper end of the liner pipe, a spigot is processed on the inner side of the upper end of the central pipe corresponding to the flange, and the flange is completely immersed in the spigot.

The fit tolerance between the base pipe and the liner pipe can ensure that the liner pipe can smoothly rotate in the base pipe. The cable joint structure comprises a plug and a socket, wherein the plug is connected onto the socket through threads, the socket is fixedly connected to the end part of the upper joint or the lower joint, a copper sleeve is arranged in the plug, a contact pin matched with the copper sleeve is arranged in the socket, and the copper sleeve and the contact pin are in splicing fit, so that the electric connection between the plug and the socket is realized.

The utility model has the advantages that: the utility model discloses a change the inboard cable structure that crosses of center tube, make the cable pass along the straight line in the center tube, not only the cable is worn out from the other end of center tube very easily, has reduced the assembly degree of difficulty of cable, has reduced the quantity of cable moreover, has reduced the cable cost. And simultaneously, the utility model discloses still effectively reduce part quantity, further reduced manufacturing cost.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a cross-sectional view at A in FIG. 1;

FIG. 3 is a schematic diagram of the construction of the socket;

FIG. 4 is a schematic view of the structure of the plug;

fig. 5 is a schematic structural diagram of a conventional cable packer serving as a basis for improvement of the present invention.

In the figure: 1-upper joint, 2-central tube, 3-lining tube, 4-lower joint, 5-cable, 6-flange and 7-cable joint.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

as shown in fig. 1, the present embodiment includes an upper joint 1, a central tube 2, a lower joint 4 and a cable 5, wherein the upper joint 1 and the lower joint 4 are respectively connected to the upper end and the lower end of the central tube 2 through threads, the upper joint 1 and the lower joint 4 are respectively provided with one cable joint 7, the inner side of the central tube 2 is provided with a liner tube 3, and a space for the cable 5 to pass through is left between the central tube 2 and the liner tube 3. The structures already existing in the above prior art (including the cited documents described in the background art) are not described in detail here.

The utility model discloses an innovation part lies in:

the external diameter of bushing pipe 3 equal to the internal diameter of center tube 2, the cable duct has been seted up in the outside of bushing pipe 3, the length direction of cable duct is parallel with the axis of bushing pipe 3, cable 5 hold in the cable duct. Through changing the cable structure of passing of the inboard of center tube 2, make cable 5 pass along the straight line in center tube 2, not only cable 5 is worn out from the other end of center tube 2 very easily, has reduced cable 5's the assembly degree of difficulty, has reduced cable 5's quantity moreover, has reduced cable 5 cost. And simultaneously, the utility model discloses still effectively reduce part quantity, further reduced manufacturing cost.

The utility model discloses still improve the fixed mode of lining pipe 3: a flange 6 is processed on the outer side of the upper end of the liner pipe 3, a spigot is processed on the inner side of the upper end of the central pipe 2 corresponding to the flange 6, and the flange 6 is completely immersed in the spigot.

After the flange 6 enters the spigot at the upper end of the base pipe 2, the upper joint limits the flange 6 in the spigot (as shown in fig. 1), so that the liner pipe 3 is fixed.

When the cable 5 is assembled, one end of the cable 5 can be fixedly connected to the cable connector on the upper connector 1, the upper connector 1 is screwed, and the matching tolerance between the central tube 2 and the liner tube 3 can ensure that the liner tube 3 can smoothly rotate in the central tube 2, so that the liner tube 3 can rotate along with the rotation of the cable 5, and the assembling difficulty of the cable 5 is reduced on the other hand.

The utility model discloses in set up cable joint, pull down cable joint 7's plug during the transportation, can avoid in the transportation follow the utility model discloses cable 5 that the tip stretches out is scraped and is bumped a section.

The construction of the cable joint 7 is described in detail in the documents cited in the background, and for the sake of convenience of implementation, the construction of the cable joint 7 is now described here as follows:

the structure of the cable joint 7 comprises a plug and a socket, the plug is connected onto the socket through threads, the socket is fixedly connected to the end part of the upper joint 1 or the lower joint 4, a copper sleeve 8 is arranged in the plug, a contact pin 9 matched with the copper sleeve 8 is arranged in the socket, and the copper sleeve 8 and the contact pin 9 are in plug-in fit, so that the electric connection between the plug and the socket is realized.

The connection of the cable connection 7 to the upper connection 1 or the lower connection 4 can be seen in fig. 5.

Claims

1. The utility model provides an easy cable washable well packer of assembling, includes top connection (1), center tube (2), lower clutch (4) and cable (5), top connection (1) and lower clutch (4) are respectively through threaded connection at the upper and lower both ends of center tube (2), respectively be provided with one cable joint (7) on top connection (1) and lower clutch (4), the inboard of center tube (2) is provided with bushing pipe (3), leave the space that supplies cable (5) to pass through between center tube (2) and bushing pipe (3), its characterized in that: the outer diameter of the liner tube (3) is equal to the inner diameter of the central tube (2), a cable groove is formed in the outer side of the liner tube (3), the length direction of the cable groove is parallel to the axis of the liner tube (3), and the cable (5) is accommodated in the cable groove;

a flange (6) is processed on the outer side of the upper end of the liner tube (3), a spigot is processed on the inner side of the upper end of the central tube (2) corresponding to the flange (6), and the flange (6) is completely immersed in the spigot.

2. An easy-to-assemble cable-over-wash packer as claimed in claim 1, wherein: the fit tolerance between the central tube (2) and the liner tube (3) can ensure that the liner tube (3) can smoothly rotate in the central tube (2).

3. An easy-to-assemble cable-over-wash packer as claimed in claim 1, wherein: the structure of the cable joint (7) comprises a plug and a socket, the plug is connected onto the socket through threads, the socket is fixedly connected to the end portion of the upper joint (1) or the lower joint (4), a copper sleeve (8) is arranged in the plug, a contact pin (9) matched with the copper sleeve (8) is arranged in the socket, and the copper sleeve (8) and the contact pin (9) are in plug-in fit, so that the plug and the socket are electrically connected.