CN112809604A

CN112809604A - Tool for taking out polytetrafluoroethylene gasket of while-drilling instrument

Info

Publication number: CN112809604A
Application number: CN201911119390.3A
Authority: CN
Inventors: 高峰
Original assignee: Dongying Qianxi Longke Industry And Trade Co ltd
Current assignee: Dongying Qianxi Longke Industry And Trade Co ltd
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2021-05-18

Abstract

The invention discloses a tool for taking out a polytetrafluoro gasket for a drilling tool, comprising a centralizer, the centralizer is tubular, one end of the centralizer is closed, the other end is open, and a spring plunger screw is installed at the center of the closed end of the centralizer, and a spring The end cap is installed around the plunger screw, the mandrel is installed on the spring plunger screw, the mandrel is provided with a pull hammer, the end cap is provided with a symmetrical through hole to the other end of the centralizer, the rotating shaft is placed in the through hole, and the rotating shaft is close to the centering body. One end of the pulling hammer is provided with a spacer ring, a spring retaining ring is installed on the rotating shaft on the upper part of the spacer ring, a wrench is installed on the rotating shaft on the upper part of the spring retaining ring, and a blade is installed at the end of the rotating shaft away from the pulling hammer. Advantages: Reasonable design and simple structure, because the PTFE gasket is originally a one-time use, and the PTFE gasket can be destroyed by taking out the tooling of the measuring while drilling instrument, so that the Pull out the PTFE gasket when any parts are damaged, which is very practical.

Description

Tool for taking out polytetrafluoroethylene gasket of while-drilling instrument

Technical Field

The invention relates to a tool used in oil exploitation, in particular to a polytetrafluoroethylene gasket taking-out tool of a while-drilling instrument.

Background

Measurement While Drilling (MWD) (measurement While Drilling) means that a Drilling machine continuously detects information related to a Drilling hole or a drill bit While Drilling, and is realized by a tracking and guiding instrument.

The existing measurement-while-drilling instrument is soaked in slurry for a long time, the viscosity of the slurry is very high, polytetrafluoroethylene gaskets are adhered to each other, great troubles are brought to disassembly, maintenance and replacement, and the purpose of disassembly is achieved by means of pulling and the like. Because the flexibility of the polytetrafluoroethylene gasket is larger, the polytetrafluoroethylene gasket is easy to deform during pulling, and the pin and the socket in the rear circuit are easy to generate relative displacement in the pulling process to cause damage.

At present, the disassembly and the assembly are achieved by using a pulling means, the method is poor in practicability, and the phenomena of part damage and the like often occur.

Disclosure of Invention

The invention aims to provide a polytetrafluoroethylene gasket taking-out tool of a while-drilling instrument aiming at the defects in the prior art.

The technical scheme is as follows: the polytetrafluoroethylene gasket taking-out tool of the drilling instrument comprises a centralizing body, wherein the centralizing body is tubular, one end of the centralizing body is sealed, the other end of the centralizing body is open, a spring plunger screw is installed at the central position of the centralizing body at one end of the centralizing body, an end cover is installed around the spring plunger screw, a mandrel is installed on the spring plunger screw, a pull hammer is arranged on the mandrel, a symmetrical through hole is formed in the other end of the centralizing body through the end cover, a rotating shaft is placed in the through hole, a spacer ring is arranged at one end, close to the pull hammer, of the rotating shaft, a spring retaining ring is installed on the rotating shaft at the upper part of the spacer ring, a wrench is installed on the rotating shaft at the upper part of the spring retaining ring, and one.

Further, the blade is installed on the rotating shaft through an inner hexagonal countersunk head screw.

Compared with the prior art, the invention has the following advantages: reasonable in design, simple structure, because the polytetrafluoroethylene gasket is disposable originally, and the measurement while drilling instrument polytetrafluoroethylene gasket takes out frock can destroy the polytetrafluoroethylene gasket just to draw the polytetrafluoroethylene gasket out with the hammer under the condition that does not damage any part with drawing, the practicality is strong.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a left side elevation sectional view of the present invention;

FIG. 3 is a top cross-sectional view of the present invention;

fig. 4 is a perspective view of the present invention.

The special tool comprises a wrench 1, a wrench 2, a blade 3, an inner hexagonal countersunk head screw 4, a mandrel 5, a spring retainer ring 6, an end cover 7, a centralizing body 8, a rotating shaft 9, a spring plunger screw 10, a spacer ring 11, a drill collar 12, a polytetrafluoroethylene gasket 13 and a pull hammer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1-4, the tool for taking out a polytetrafluoroethylene gasket of a while-drilling instrument comprises a centralizing body 7, wherein the centralizing body 7 is tubular, one end of the centralizing body 7 is closed, the other end of the centralizing body is open, a spring plunger screw 9 is installed at the central position of the centralizing body 7 at the closed end, an end cover 6 is installed around the spring plunger screw 9, a mandrel 4 is installed on the spring plunger screw 9, a pull hammer 13 is arranged on the mandrel 4, symmetrical through holes are formed from the end cover 6 to the other end of the centralizing body 7, a rotating shaft 8 is placed in the through hole, a spacer ring 10 is arranged at one end, close to the pull hammer 13, of the rotating shaft 8, a spring retainer ring 5 is installed on the rotating shaft 8 at the upper part of the spacer ring 5, a wrench 1 is installed on the rotating shaft 8 at the upper part of the spring retainer ring 5, and a; the blade 2 is arranged on a rotating shaft 8 through a hexagon socket countersunk head screw 3.

Taking out the polytetrafluoroethylene gasket:

fixing 9 spring plunger screws on the righting body 7, fixing the end cover 6 on the righting body 7, loading the core shaft 4, inserting the rotating shaft 8, placing the spacer ring 10, fixing the spring retainer ring 5, loading the blade 2, fixing the hexagon socket countersunk head screw 3, screwing the wrench 1, loading the pull hammer 13, and finishing tool assembly. And then penetrating the tool into the drill collar 11, rotating the wrench 1 to rotate the blade 2 to a vertical state when the tool is installed, enabling the blade 2 to be hidden in the tool without damaging the drill collar 11 until the front end of the tool is jacked to be incapable of advancing, rotating the wrench 1 to rotate the blade 2 to a horizontal state at the moment, cutting the polytetrafluoroethylene gasket 12, and pulling out the polytetrafluoroethylene gasket 12 by using a pull hammer 13 after the polytetrafluoroethylene gasket is cut to the horizontal state. In the drawing, the drawing is started from the first piece on the left side, and then the subsequent polytetrafluoroethylene spacers 12 are drawn in sequence, so that all of the polytetrafluoroethylene spacers 12 are completely taken out.

The structure and connection relation not mentioned are common knowledge.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. Take out the tooling of the polytetrafluoro gasket of the instrument while drilling, and it is characterized in that: comprising a centralizer (7), the centralizer (7) is tubular, one end of the centralizer (7) is closed, and the other end is open, A spring plunger screw (9) is installed at the center of the centralizer (7) at the closed end, an end cover (6) is installed around the spring plunger screw (9), and an end cover (6) is installed on the spring plunger screw (9). The mandrel (4) is provided with a pulling hammer (13), and the end cover (6) is provided with a symmetrical through hole to the other end of the centralizer (7). A rotating shaft (8) is placed in the hole, a spacer ring (10) is provided on the end of the rotating shaft (8) close to the pulling hammer (13), and the rotating shaft (8) on the upper part of the spacer ring (10) is provided with a spacer (10). Install the spring retaining ring (5), install the wrench (1) on the rotating shaft (8) on the upper part of the spring retaining ring (5), and install the blade ( 2).

2 . The tool for taking out the PTFE gasket of an instrument while drilling according to claim 1 , wherein the blade ( 2 ) is mounted on the rotating shaft ( 8 ) through a hexagon socket head countersunk head screw ( 3 ). 3 .