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Hydraulic drive turbine type reaming guide shoe tool

A hydraulic drive, turbine technology, applied in the direction of drill pipe, casing, drill pipe, etc., can solve the problems of casing running down, difficult to solve the problem of wellbore necking and casing running down, so as to avoid repeated well drilling operation, save operation time, and have little effect on pressure drop

Inactive Publication Date: 2017-05-24
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These tools have their own characteristics and have played a certain role in solving the problem of casing running difficulties. They can deal with the problem of casing running caused by simple borehole sand bridges, but it is difficult to solve the problem of casing running caused by borehole necking.

Method used

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  • Hydraulic drive turbine type reaming guide shoe tool
  • Hydraulic drive turbine type reaming guide shoe tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The hydraulically driven turbine reaming shoe guide tool includes a housing 7 , a turbine shaft 8 , a casing joint 1 , a fixed shaft shoulder 2 , a thrust bearing 10 and a centering bearing 4 . One end of the housing 7 is threaded with a casing joint 1; the other end of the housing 7 is threaded with a turbine shaft 8 through an end cover 12, and one end of the turbine shaft 8 extends into the housing 7 and extends to the turbine shaft in the housing 7. A fixed shaft shoulder 2 is installed on the screw thread at the end of the shaft 8 . The turbine shaft 8 on one side of the fixed shoulder 2 is equipped with a turbine stator 5 and a turbine rotor 6 through a thrust bearing 10 and a centering bearing 4; the turbine stator 5 and the turbine rotor 6 can rotate relatively. A baffle block 9 is installed on the turbine shaft 8 between the turbine stator 5 and the turbine rotor 6 and the thrust bearing 10 . The baffle block 9 is an annular body, and a plurality of passage ho...

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Abstract

The invention relates to a hydraulic drive turbine type reaming guide shoe tool and belongs to the technical field of petroleum drilling tools. The hydraulic drive turbine type reaming guide shoe tool comprises a shell, a turbine shaft, a sleeve joint, a fixing shaft shoulder, a thrust bearing and a stabilizing bearing. The sleeve joint is mounted at one end of the shell in a threaded manner, the turbine shaft is mounted at the other end of the shell in a threaded manner through an end cover, one end of the turbine shaft extends into the shell and is provided with the fixing shaft shoulder in a threaded manner, and a turbine stator and a turbine rotor are mounted at the positions, on one side of the fixing shaft shoulder, of the turbine shaft through the thrust bearing and the stabilizing bearing. The hydraulic drive turbine type reaming guide shoe tool has the advantages that through overflowing through holes of a flow stop block 9 and overflowing holes of an overflowing ring 14 on the thrust bearing, the flow size of drilling fluid can be changed, so that the turbine shaft forms different torques, a casing shoe can be powered in a casing pipe descending process, and casing pipe descending speed is increased.

Description

technical field [0001] The invention relates to a hydraulically driven turbine reaming and shoe guiding tool, which belongs to the technical field of petroleum drilling tools. Background technique [0002] The difficulty of horizontal well cementing and well completion lies in how to run the casing smoothly into the horizontal well section. At present, some tools have been developed in China to solve the problem of lowering the well completion casing. These tools have their own characteristics, and have played a certain role in solving the problem of casing running. They can solve the problem of casing running caused by simple borehole sand bridges, but it is difficult to solve the problem of casing running caused by borehole necking. [0003] Through relevant investigations, a new type of casing running tool has been developed, which can realize the rotation of the casing shoe relative to the entire casing through lifting and mud circulation, and has the function of reamin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/14E21B7/28
CPCE21B17/14E21B7/28
Inventor 冯定王鹏亢博文向如龚盼周廪
Owner YANGTZE UNIVERSITY
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