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Suspending device for preventing rotary guiding tool from falling into well

A suspension device and rotary steering technology, applied to rotary drilling rigs, drilling equipment, drilling equipment and methods, etc., can solve the problems of universal joint fatigue failure and other problems, achieve easy selection and installation, facilitate workshop assembly, and improve service life Effect

Inactive Publication Date: 2019-10-22
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to achieve the role of tool rotation and steering, it is necessary to ensure that the weight on bit is transmitted to the drill bit. This design requires the universal joint to withstand high bit pressure, and due to the complexity of downhole working conditions, the universal joint is prone to fatigue failure

Method used

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  • Suspending device for preventing rotary guiding tool from falling into well
  • Suspending device for preventing rotary guiding tool from falling into well
  • Suspending device for preventing rotary guiding tool from falling into well

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Embodiment Construction

[0021] Below by implementing method and accompanying drawing, the present invention is described in further detail:

[0022] An anti-fall suspension device for a rotary steerable tool such as Figure 1-Figure 5 As shown, it mainly includes tool upper body system, tool lower body system, suspension system and universal joint.

[0023] First, the tool body 10 is prepared, the universal joint 72 is installed, and the tool body 10 is connected with the lower body 90 of the universal joint to realize the preliminary connection of the upper and lower body systems of the tool; In the uppermost end (the actual assembly is lying flat on the support frame), two screws 44 and spring washers 42 are used to install the two suspension frames 40 on the tool body 10 as shown in the figure. At this time, the overcoat 30 will be suspended Moving downwards, the steps on the inner wall contact the suspension frame to complete the preliminary assembly of the suspension device; then the pushed out...

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Abstract

The invention relates to a suspending device for preventing a rotary guiding tool from falling into a well. The suspending device is composed of a suspending system, a tool upper body system, a tool lower body system and a universal joint. The suspending device can prevent accidents that underground tools fall into the well due to fatigue failure of the universal joint effectively. A suspending outer jacket adopts a left spiral thread and a locking nut connecting a drill bit adopts a right spiral thread, so that a pushed outer sleeve can be locked in the tool lower body system effectively, andthe bit pressure that the universal joint is in contact with the tool lower body can be shared effectively, and therefore, the service life of the universal joint is prolonged to a certain extent. Alower solid of the universal joint and a lower side of the pushed sleeve are mounted by using a hexagonal structure, so that contact positioning is facilitated and workshop assembly is facilitated.

Description

technical field [0001] The invention relates to a structural improvement of a rotary steerable drilling tool with high deflection building capability, in particular to a structure capable of improving tool reliability, and belongs to the field of oil and natural gas drilling. Background technique [0002] Rotary steerable drilling technology is a cutting-edge automatic drilling technology developed in the 1990s in the world. With the development of technology, commercialized rotary steerable tools have appeared in foreign countries, such as push-to-type and point-to-point rotary steerable tools. With the demand of some complex drilling, the high deflection capability of the rotary steerable tool is challenged. Therefore, a compound rotary steerable drilling tool (which has the characteristics of push and point) has been proposed abroad. This tool effectively integrates the advantages and disadvantages of push-on and point-to-point rotary steerable tools, improves the deflec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B19/08E21B17/05E21B7/08
CPCE21B19/16E21B17/05E21B7/061
Inventor 张晓东杨林张毅余鑫郝仁杰林梦李谨
Owner SOUTHWEST PETROLEUM UNIV
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