Replaceable flexible conductive skeleton structure

Abstract

The utility model relates to the technical field of petroleum drilling underground testing instruments, in particular to a replaceable flexible conductive framework structure. The replaceable flexible conductive skeleton structure comprises a conductive skeleton body, the lower portion of the conductive skeleton body is connected with a conductive skeleton lower short circuit, a spiral centralizer and an anti-rotation pin are installed at the front end of the conductive skeleton body, and sealing glands are installed on the conductive skeleton body and the conductive skeleton lower short circuit. According to the utility model, the replaceable spiral centralizer is designed, so that the processing cost of the whole structure can be reduced, and the service life of the conductive skeleton structure is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil drilling downhole testing instrument, and particularly relates to a replaceable flexible conductive framework structure. BACKGROUND

[0002] At present, in the process of drilling ultra-thin oil reservoirs, the use of rotary steering system plays a crucial role in the development of oil reservoirs, and the build-up rate of the instrument plays an important role in whether the construction can be successfully carried out. In addition to the measurement force generated by the support of the guide head in the rotary steering system, the spiral stabilizer and the flexible characteristics of the flexible conductive framework structure in the system also play an important role. At present, the flexible conductive framework structure adopts imported large-size non-magnetic stainless steel bar P550 or 15-15 to process the spiral stabilizer shape, and embeds hard alloy or welds wear-resistant strips on the outer surface. Because of the spiral stabilizer structure of the framework, most of the bar material is removed, which causes the flexible conductive framework structure to be high in cost, and the spiral stabilizer structure is not easy to repair after wear, causing great cost waste. SUMMARY

[0003] (I) Technical problems to be solved

[0004] In view of the defects of the prior art, the present application provides a replaceable flexible conductive framework structure, which realizes a substantial reduction in the cost of the flexible conductive framework structure and improves the service life.

[0005] (II) Technical scheme

[0006] In order to solve the above problems, the present application provides a replaceable flexible conductive framework structure, comprising:

[0007] A conductive framework body, a conductive framework lower short circuit is connected below the conductive framework body, and a spiral stabilizer and an anti-rotation pin are installed at the front end of the conductive framework body; a sealing gland is installed on the conductive framework body and the conductive framework lower short circuit.

[0008] Preferably, the spiral stabilizer is sleeved into the conductive framework body and is prevented from rotating by the anti-rotation pin and the conductive framework lower short circuit.

[0009] Preferably, the number of anti-rotation pins is at least three.

[0010] Preferably, the spiral stabilizer needs to be processed by a large-size bar, and the remaining parts need to be processed by a smaller bar.

[0011] Preferably, after the spiral stabilizer is worn, only the spiral stabilizer needs to be replaced, and the remaining parts can continue to be used.

[0012] Preferably, the conductive framework body is designed with a special threading hole structure.

[0013] Preferably, the conductive framework body side is provided with a first vertical hole penetrating to the front end, and the conductive framework body is provided with a second inclined hole inclinedly penetrating to the conductive framework lower short circuit, and the first vertical hole is communicated with the second inclined hole.

[0014] (Three) beneficial effects

[0015] The replaceable flexible conductive framework structure introduced in the application is processed by using 9.5-inch bar stock at present, and only the spiral centralizer position is processed by using 12.5-inch bar stock, so that the processing period of the single flexible conductive framework structure can be shortened by 15 days, and the processing cost can be reduced by 350,000 yuan. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a structure view of the replaceable flexible conductive framework structure of the application;

[0017] Fig. 2 It is a main body structure view of the replaceable flexible conductive framework structure of the application.

[0018] Among them, 1, conductive framework body; 2, spiral centralizer; 3, conductive framework lower short circuit; 4, sealing gland; 5, anti-rotation pin. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the application.

[0020] In the description of the application, it is necessary to understand that the orientations or positional relationships indicated by "up", "down", "inner", "outer", "top", "bottom" and the like are all based on the orientations or positional relationships shown in the drawings, and the purpose is only to facilitate the description of the application and simplify the description, and it is not intended to indicate or imply that the indicated parts must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0021] As Figs. 1-2 shown, the application provides a replaceable flexible conductive framework structure, which specifically comprises: a flexible short section 1, which plays a connecting role, a guide mechanism mandrel 2 connected below the flexible short section 1, a guide mechanism body 6 connected below the guide mechanism mandrel 2, and a lower connector body 10 connected below the guide mechanism body 6.

[0022] It includes conductive framework body 1, the lower end of conductive framework body 1 is connected with conductive framework lower short circuit 3, the front end of conductive framework body 1 is provided with spiral centralizer 2 and anti-rotation pin 5, and sealing gland 4 is arranged on conductive framework body 1 and conductive framework lower short circuit 3.

[0023] It should be noted that the conductive framework body 1 is connected with the conductive framework lower short circuit 3 through threads, the conductive framework lower short circuit 3 is provided with female threads, when the male threads of the conductive framework body 1 are connected, the end face of the spiral centralizer 2 is extruded, and the purpose of locking and fixing is achieved.

[0024] In the application, the front end of the conductive framework body 1 is designed with three grooves, the spiral centralizer 2 is designed with three grooves, and the anti-rotation pin 5 is placed into the grooves to prevent rotation.

[0025] It should be noted that the left end of the conductive framework body 1 is provided with a downward straight hole, the inclined hole is communicated with the horizontal hole, the right end is provided with an upward inclined hole, one end of the inclined hole is connected to the conductive framework lower short circuit 3, and the conductive framework lower short circuit 3 is also provided with a hole connected to the right end surface of the conductive framework lower short circuit 3.

[0026] In the application, the wires in the conductive framework body 1 are connected at the vertical hole, the sealing gland 4 and the lower sealing ring seal the space, and the male threads on the sealing gland 4 are connected with the female threads of the conductive framework body 1.

[0027] In the application, the wires in the conductive framework lower short circuit 3 are connected at the vertical hole, the sealing gland 4 and the lower sealing ring seal the space, and the male threads on the sealing gland 4 are connected with the female threads of the conductive framework lower short circuit 3.

[0028] The replaceable flexible conductive framework structure can shorten the processing period of a single flexible conductive framework structure by 15 days and reduce the processing cost by 350,000 yuan.

[0029] When the structure is installed, the whole short circuit is first tightened on the disassembly and assembly table to reach the specified torque, the male buckle end of the lower end is connected with the guiding head of the lower end, and the specified torque is reached, the female buckle of the upper end of the short circuit is connected with the resistivity short circuit of the upper end, and the specified torque is reached, and the downhole tool is realized.

[0030] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that the technical solutions described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalent features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A replaceable flexible conductive skeleton structure, characterized by, Include: The conductive framework body (1) is connected below the conductive framework lower short circuit (3), the conductive framework body (1) front end is equipped with spiral centralizer (2) and anti-rotation dowel (5), the conductive framework body (1) and the conductive framework lower short circuit (3) are all equipped with sealing gland (4).

2. The replaceable flexible conductive skeleton structure of claim 1, wherein, The spiral centralizer (2) is sleeved into the conductive framework body (1), and the anti-rotation is realized by the anti-rotation dowel (5) and the conductive framework lower short circuit (3).

3. The replaceable flexible conductive skeleton structure of claim 1, wherein, The number of the anti-rotation dowel (5) is at least three.

4. The replaceable flexible conductive skeleton structure of claim 1, wherein, The spiral centralizer (2) needs large-size bar stock processing, and the remaining parts need smaller bar stock processing.

5. The replaceable flexible conductive skeleton structure of claim 1, wherein, After the spiral centralizer (2) is worn, only the spiral centralizer (2) needs to be replaced, and the remaining parts can continue to be used.

6. The replaceable flexible conductive skeleton structure of claim 1, wherein, The inside is designed with a special threading hole structure.

7. The replaceable flexible conductive skeleton structure of claim 1, wherein, The conductive framework body (1) side is provided with a first vertical hole penetrating to the front end, the conductive framework body (1) is provided with a second inclined hole inclinedly penetrating to the conductive framework lower short circuit (3), and the first vertical hole is communicated with the second inclined hole.

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