Rotary exit device with guide for drilling radial and horizontal holes

A technology of export device and guide, which is applied in natural gas, coal, and petroleum fields, can solve problems such as drill sticking and eccentric wear of drilling casing tools, and achieve the goal of reducing eccentric wear resistance, avoiding eccentric wear and sticking, and reducing rotational friction resistance Effect

Active Publication Date: 2017-12-05
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a rotary outlet device for a guider used for drilling radial and horizontal holes, which can effectively solve the problem of drill sticking caused by eccentric wear of casing tools during drilling

Method used

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  • Rotary exit device with guide for drilling radial and horizontal holes
  • Rotary exit device with guide for drilling radial and horizontal holes
  • Rotary exit device with guide for drilling radial and horizontal holes

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Embodiment Construction

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.

[0044] Such as Figure 2 to Figure 3-2 As shown, the present invention provides a rotary outlet device for drilling a radial horizontal hole guide, wherein the outlet of the guide 12 is provided with an outlet groove 17, and the rotation of the drill radial horizontal hole guide The outlet device is located in the outlet groove 17, which includes: a body 1, which has a through hole 1-13 communicating with the outlet of the guide 12, and a cover plate is provid...

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Abstract

The invention provides a rotary outlet device of a guide device for drilling radial horizontal holes. An outlet of the guide device is provided with a concave outlet groove. The rotary outlet device of the guide device for drilling radial horizontal holes is located in the outlet groove. The rotary outlet device comprises a body and a rotating ring. The body is provided with a through hole communicating with the outlet of the guide device. The bottom end of the through hole is provided with a cover plate. The cover plate is provided with a cover plate hole communicating with the through hole. The top end of the through hole is provided with an annular clamping portion. The rotating ring is arranged in the through hole. The bottom end of the rotating ring abuts against the cover plate. The outer wall of the rotating ring is provided with an annular step in a protruding manner. A first cavity is defined by the upper step face of the annular step and the annular clamping portion. A second cavity is defined by the lower step face of the annular step and the cover plate. The first cavity and the second cavity are each internally provided with multiple steel balls. The rotary outlet device can effectively solve the problem that a sleeve drilling tool is worn eccentrically in the drilling process and thus is stuck.

Description

technical field [0001] The invention belongs to the technical field of petroleum, coal and natural gas, in particular to a downhole operation device for drilling radial horizontal holes with coiled tubing, in particular a rotary outlet device for a guider for drilling radial horizontal holes. Background technique [0002] At present, in the domestic and foreign oilfield exploitation industry, coiled tubing drilling radial horizontal hole technology is mainly used for the secondary development of oil and gas wells, and has a significant effect of increasing production for the reconstruction of low-permeability reservoirs and the reconstruction of contaminated layers near the well. [0003] The existing coiled tubing drilling radial horizontal hole technology mainly uses the conventional tubing string to lower the positioning and guiding tool to the pre-operation layer, and then uses the coiled tubing to lower the drilling and casing tool into the positioning and guiding tool t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/04E21B17/10
CPCE21B7/046E21B17/10
Inventor 陈智张友军胡强法张炎朱峰于东兵
Owner BC P INC CHINA NAT PETROLEUM CORP
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