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Efficient well hole trimming tool

A dressing tool and wellbore technology, applied in wellbore/well components, earthwork drilling, etc., can solve the problems of many times of drilling and long delay time, etc., to ensure clean wellbore, high safety and high crushing force Effect

Active Publication Date: 2016-08-24
XINJIANG GRAND OILFIELD TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, there are many times of drilling and drilling, and the delay time is long, sometimes as long as two or three months.

Method used

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  • Efficient well hole trimming tool
  • Efficient well hole trimming tool
  • Efficient well hole trimming tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] like figure 1 and figure 2 As shown in the figure, the high-efficiency wellbore dressing tool of the present invention consists of a first connecting head 1, an upper flexible section 2, an upper transition section 3, an upper cutting section 4, a first connecting section 5, a stirring hammer 6, a fluid acceleration section from top to bottom The bulb 7, the lower cutting section 8, the lower transition section 9, the lower end flexible section 10 and the second connector 11 are connected in sequence, and the axis lines of the components overlap, and the axis lines are vertical;

[0029] The first connector 1 is a female buckle end, and the second connector 11 is a male buckle end, which are respectively used to connect with the well pipe string, and can also be connected by a mating joint here;

[0030] The cross-sectional diameter of the upper flexible segment 2 is smaller than the cross-sectional diameter of the upper cutting segment 3 and the cross-sectional diame...

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PUM

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Abstract

The invention discloses an efficient well hole trimming tool which comprises an upper cutting section. The lower end of the upper cutting section is connected with a lower cutting section through a first connecting section in the axial direction, the upper end of the upper cutting section is connected with a first connector for being connected with a well pipe string, the lower end of the lower cutting section is connected with a second connector for being connected with the well pipe string, and the cross section diameter of the first connecting section is smaller than that of the upper cutting section and that of the lower cutting section. The efficient well hole trimming tool is beneficial to well hole quality, ensures casting running and well cementing operation and is also beneficial to efficiency improvement and shortening of a drilling period.

Description

technical field [0001] The present invention relates to a dressing tool, in particular to a high-efficiency wellbore dressing tool. Background technique [0002] With the development of oil and gas fields in the middle and late stages, the difficulty of oilfield development has gradually increased, and complex situations such as annular pressure hold-up, shallow diameter reduction, and lost circulation have frequently occurred. In order to ensure the safety of the well, the drilling team has to take technical measures such as short tripping, drilling through the well, reaming, and even plugging during the drilling operation, which will seriously affect the drilling time. [0003] After the completion of the deep well in Tarim, it is difficult to run casing. The main reason is that there is a keyway in the wellbore. Due to the depth of the well, the casing may be directly stuck on the well wall when it is lowered to the keyway position, resulting in the casing not being able...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B29/00
Inventor 贺志刚徐开放李怀仲
Owner XINJIANG GRAND OILFIELD TECH
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