CN202900061U

CN202900061U - Novel casing

Info

Publication number: CN202900061U
Application number: CN 201220592153
Authority: CN
Inventors: 耿元根; 邵红红; 于百林
Original assignee: Dongying Zhongxin Petroleum Machinery Manufacturing Co Ltd
Current assignee: Dongying Zhongxin Petroleum Machinery Manufacturing Co Ltd
Priority date: 2012-11-12
Filing date: 2012-11-12
Publication date: 2013-04-24
Anticipated expiration: 2022-11-12

Abstract

The utility model relates to the technical field of devices used for supporting walls of wells to guarantee that drilling processes are smoothly carried out and the integral wells can normally run after well completion, and particularly relates to a novel casing. The novel casing comprises a main tube, a left-end tube and a right-end tube, the right end of the left-end tube is connected with the main tube in a threaded manner, the left end of the right-end tube is connected with the main tube in a threaded manner, the outer tube diameter of a joint of the right end of the left-end tube and the main tube is sequentially reduced from left to right, the outer tube diameter of a joint of the left end of the right-end tube and the main tube is sequentially reduced from right to left, an included angle formed between the horizontal line and the top surface of the joint of the left-end tube and the main tube is 18 degrees, and an included angle formed between the horizontal line and the top surface of the joint of the right-end tube and the main tube is 18 degrees. The novel casing has the advantages that the novel casing is not easy to bend, is good in sealing performance, and can be individually replaced, and side tracking and reaming are omitted.

Description

New casing

Technical field

The utility model relates to for the borehole wall is supported, and the technical field of the device that can normally move in order to whole well after the carrying out that ensure drilling process and the completion particularly relates to a kind of new casing.

Background technology

As everyone knows, sleeve pipe is a kind of for the borehole wall is supported, and in order to the device that whole well after the carrying out that ensure drilling process and the completion can normally move, existing sleeve pipe comprises supervisor, left end pipe and right-hand member pipe, and left end pipe and right-hand member Guan Junyu are responsible for and link together; This sleeve pipe finds in using that left end pipe, right-hand member pipe and supervisor are integrated design generally speaking, and its result of use frangibility, sealing are poor, and generally need the sidetracking reaming hole to be used for fixed sleeving, the rear integral cannula of very trouble, and its damage all need be changed, and wastes very much material.

The utility model content

For solving the problems of the technologies described above, the utility model provides a kind of not frangibility, good airproof performance and can change separately, without the new casing of sidetracking reaming hole.

New casing of the present utility model, comprise supervisor, left end pipe and right-hand member pipe, right-hand member and the supervisor of described left end pipe are threaded togather, left end and the supervisor of described right-hand member pipe are threaded togather, and described left end pipe right-hand member reduces from left to right successively with the pipe external diameter of supervisor junction, described right-hand member pipe left end reduces successively with the pipe external diameter right-to-left of supervisor junction, described left end pipe is 18 degree with end face and the horizon angle of supervisor junction, and described right-hand member pipe is 18 degree with supervisor's junction end face and horizon angle.

Compared with prior art the beneficial effects of the utility model are: the right-hand member and the supervisor that arrange the left end pipe are threaded togather, left end and the supervisor of right-hand member pipe are threaded togather, and left end pipe right-hand member reduces from left to right successively with the pipe external diameter of supervisor junction, right-hand member pipe left end reduces successively with the pipe external diameter right-to-left of supervisor junction, the left end pipe is 18 degree with end face and the horizon angle of supervisor junction, and the right-hand member pipe is 18 degree with supervisor's junction end face and horizon angle; Like this, among left end pipe, right-hand member pipe and the supervisor during any parts damages, can change separately, effectively reduced the waste of material, and after adopting helicitic texture to connect, can carry out length according to the situation of well and change, effectively adapted to situation in the well, do not need the sidetracking reaming hole to get final product, and frangibility not, good airproof performance.

Description of drawings

Fig. 1 is structural representation of the present utility model.

The specific embodiment

Below in conjunction with drawings and Examples, the specific embodiment of the present utility model is described in further detail.Following examples are used for explanation the utility model, but are not used for limiting scope of the present utility model.

As shown in Figure 1, new casing of the present utility model, comprise supervisor 1, left end pipe 2 and right-hand member pipe 3, right-hand member and the supervisor of left end pipe are threaded togather, left end and the supervisor of right-hand member pipe are threaded togather, and left end pipe right-hand member reduces from left to right successively with the pipe external diameter of supervisor junction, right-hand member pipe left end reduces successively with the pipe external diameter right-to-left of supervisor junction, the left end pipe is 18 degree with end face and the horizon angle of supervisor junction, and the right-hand member pipe is 18 degree with supervisor's junction end face and horizon angle; Like this, among left end pipe, right-hand member pipe and the supervisor during any parts damages, can change separately, effectively reduced the waste of material, and after adopting helicitic texture to connect, can carry out length according to the situation of well and change, effectively adapted to situation in the well, do not need the sidetracking reaming hole to get final product, and frangibility not, good airproof performance.

New casing of the present utility model, be the 96* sleeve pipe, 105 millimeters of box cupling external diameters, " casing damaged well of sleeve pipe is administered and window sidetracking, can equally with ordinary casing use centralizer, makes sleeve pipe occupy the pit shaft center; the cement thickness of repeated segments has 9.5 millimeters at the box cupling place; reach 13.5 millimeters at casing section, reduces the well cementation difficulty, can effectively guarantee cementing quality mainly to be applicable to 51/2.

The above only is preferred embodiment of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.

Claims

1. new casing, comprise supervisor, left end pipe and right-hand member pipe, it is characterized in that, right-hand member and the supervisor of described left end pipe are threaded togather, left end and the supervisor of described right-hand member pipe are threaded togather, and described left end pipe right-hand member reduces from left to right successively with the pipe external diameter of supervisor junction, described right-hand member pipe left end reduces successively with the pipe external diameter right-to-left of supervisor junction, described left end pipe is 18 degree with end face and the horizon angle of supervisor junction, and described right-hand member pipe is 18 degree with supervisor's junction end face and horizon angle.