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Prebending kinetics deviation control and fast drilling method

A pre-bending, dynamic technology, applied in directional drilling and other directions, can solve the problem of high cost of use

Active Publication Date: 2008-09-10
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although foreign vertical drilling systems can achieve the purpose of anti-deviation and fast drilling, their cost is very high, and many oil fields are unable to use this technology

Method used

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  • Prebending kinetics deviation control and fast drilling method
  • Prebending kinetics deviation control and fast drilling method
  • Prebending kinetics deviation control and fast drilling method

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Experimental program
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Effect test

Embodiment Construction

[0157] A preferred embodiment of the present invention is described in detail as follows in conjunction with accompanying drawing:

[0158] see figure 1 , this pre-bending dynamic anti-deflection drilling method adopts figure 1 The drill tool assembly with pre-bending structure shown is: a drill bit (1) is connected with a lower stabilizer (2), the lower stabilizer is connected with a pre-bent sub (3), and the pre-bend sub (3) passes through a The short drill collar (4) is connected to an upper stabilizer (5), which is connected to the upper drill string through the drill collar (6). The upper drill string is generally composed of drill collars, drill pipes and other downhole tool connections.

[0159] see figure 2 , the specific steps of the pre-bending dynamic anti-deflection drilling method are as follows:

[0160] 1. According to the characteristics of the well deviation of the formation to be drilled, a set of drilling tool assembly is preliminarily determined accordi...

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Abstract

The invention relates to a prebuckling dynamics against sided strike rapid drilling method. The method adopts a drill assembly with a prebuckling structure and the ground driving way, begins with the analysis of the against sided force of an aiguille and the law for changing, determines the drill assembly, the technological operation regulations, the safety analysis and the detection and realizesthe against sided strike rapid drilling. The against sided strike rapid drilling method is used in the practical operation; the bit pressure is increased by more than 50 percent compared with a pendulum limit bit pressure, the mechanical drilling speed is greatly increased and is up to 700 percent.

Description

technical field [0001] The invention relates to a new method for anti-deviation and fast drilling of vertical wells for oil drilling, in particular to a new method for anti-deviation and fast drilling using a ground rotation-driven drilling tool assembly with pre-bending anti-deviation and fast drilling. technical background [0002] It has been a century-old problem that vertical wells are easy to deviate in oil exploration. With the increasing difficulty of exploration of oil and gas resources, the exploration and development of oil and gas resources in easy-deviation, high-steep and easy-inclination structures has gradually been paid attention to, but the exploration speed is severely restricted by the problem of well deviation. Existing conventional anti-deviation methods such as pendulum and full-hole etc. all achieve the purpose of preventing or reducing well deviation by reducing the deformation of the drilling tool assembly, and the calculation of the anti-deviation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/04
Inventor 狄勤丰朱卫平
Owner SHANGHAI UNIV
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