Downhole hole opener

A reamer and shell technology, applied in drilling equipment, earthwork drilling, drill bits, etc., can solve the problem of inability to choose reaming or non-reaming operation status.

Active Publication Date: 2016-08-24
四川伟创石油装备制造有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a downhole reamer to solve the technic

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Embodiment Construction

[0038] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0039] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention relates to the technical field of petroleum drilling equipment, in particular to a downhole hole opener. The downhole hole opener comprises a shell, a main shaft, a telescopic tool mechanism and a tool control device. The shell is a hollow shell with the two ends open. A tool outlet hole is formed in the side wall of the shell. The main shaft is arranged in the shell and spaced from the side wall of the shell. The telescopic tool mechanism is arranged on the main shaft in a sleeving mode, and a tool body of the telescopic tool mechanism is located in the tool outlet hole. The tool control device is arranged in the shell and is in transmission connection with the telescopic tool mechanism to drive the telescopic tool mechanism to move so that the tool body of the telescopic tool mechanism can conduct reciprocating motion in the opening direction of the tool outlet hole. The tool body can stretch out and also can retract back, the operating state of the hole opener can be controlled accordingly, and the working state of the hole opener can be adjusted on the ground.

Description

technical field [0001] The invention relates to the technical field of petroleum drilling equipment, in particular to a downhole reamer. Background technique [0002] With the deepening of oil and natural gas exploitation, the depth of drilling is gradually deepening, and the problems encountered in drilling are becoming more and more complicated. Faced with more and more complex well structures and complex formation structures, construction in some areas , may encounter situations such as wellbore shrinkage, irregular wellbore or narrow casing ring space, etc. The conventional method can only carry out long-term reaming operation during drilling or when tripping out to avoid Reaching the purpose of removing the shrinkage and repairing the well wall will consume a lot of manpower, material resources and time. [0003] In the prior art, technicians have produced a tool for enlarging the wellbore—a downhole reamer, also known as an expander reaming bit. This equipment is a t...

Claims

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Application Information

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IPC IPC(8): E21B10/32
CPCE21B10/327
Inventor 魏学成胡波沈建文王岳
Owner 四川伟创石油装备制造有限公司
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