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Drilling power tool, drilling tool and drilling method for forming boreholes

A technology of power tools and drilling tools, applied in drilling equipment and methods, drilling equipment, drill pipes, etc., can solve the problems of large damage, slow drilling speed, and short life of drilling tools, and achieve the goal of improving rock breaking efficiency Effect

Active Publication Date: 2012-10-03
SINOPEC OILFIELD EQUIP CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] To sum up, the drilling speed of conventional rotary drilling is slow, the drill bit is easy to wear, and the rotary percussion drilling has great damage to the drilling tool, and its own life is short. It is urgent to develop a new drilling method and its supporting tools, through simple and effective methods and tools. Rock breaking efficiency, prolonging the life of the drill bit, preventing drill sticking accidents and solving the problems of sliding directional (ERD) drilling mode, etc.

Method used

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  • Drilling power tool, drilling tool and drilling method for forming boreholes
  • Drilling power tool, drilling tool and drilling method for forming boreholes
  • Drilling power tool, drilling tool and drilling method for forming boreholes

Examples

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Effect test

Embodiment 1

[0088] see Figure 1-3 : a drilling power tool 2, comprising an energy conversion mechanism and a valve shaft system, characterized in that the energy conversion mechanism is a rotation generator or a torsion generator, generally a screw or a turbine or an impeller; the valve shaft system is arranged on an energy The lower end of the conversion mechanism is connected with the energy conversion mechanism through threads; the valve shaft system includes a stator 2a1, a rotor 2a, a moving valve plate assembly 2b, a fixed valve plate assembly 2c and a shaft assembly 2d, and the rotor 2a is on the side of the stator 2a1 The left and right reciprocating pendulum movement is performed in the cavity; the rotor 2a passes through the round hole of the fixed valve plate assembly 2c at the lower end and does not contact the fixed valve plate assembly 2c; the moving valve plate assembly 2b is located at the lower end of the rotor 2a, and The rotor 2a is integral or directly connected and f...

Embodiment 2

[0090] see Figure 1-4 , a new type of drilling power tool, the drilling power tool 2 in embodiment 1 is arranged between the drill collar 1 and the drill bit 3 of the drill string;

Embodiment 3

[0092] see Figure 1-3 , 5, a new type of drilling tool, the drilling power tool 2 in embodiment 1 is arranged between the drill collar 1 and the drill bit 3 of the drill string, and the conventional power drilling tool 5 is arranged between the drilling power tool 2 and the drill bit 3 ; The cardan shaft assembly is respectively arranged at the joints at both ends of the conventional power drilling tool 5 .

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Abstract

The invention discloses a drilling power tool, a drilling tool and a drilling method for forming boreholes. The drilling power tool comprises an energy conversion mechanism and a valve shaft system. The energy conversion mechanism is a rotary generator. The valve shaft system comprises a stator, a rotor, a movable valve sheet assembly, a fixed valve sheet assembly and a shaft assembly, wherein the rotor makes a reciprocating motion right and left and drives the movable valve sheet assembly directly connected with the rotor. The energy conversion mechanism is a screw rod or a turbine or an impeller. According to the invention, when a drilling bit is rotated, the drilling pressure at the drilling bit and the drilling pressure at the bottom of a drilling well are similar to the continuous gentle change of the sine law, which is favorable for the strength reduction of surrounding rocks and the development of fractures, so that the rock breaking efficiency can be improved obviously. In addition, because the pressure at the drilling bit and at the bottom of the drilling well is changed periodically, the negative-pressure injection and the high-pressure injection are generated alternately; and when the pressure becomes lower, the well drilling in an underbalance manner or by using the gas drilling fluid is carried out, so that the surrounding rock environment is changed, and the mechanical drilling rate is improved obviously.

Description

technical field [0001] The invention relates to a drilling power tool used in drilling engineering to improve the rock-breaking efficiency of the drill bit, prolong the service life of the drill bit, and prevent the drill from sticking, a new drilling tool composed of the same and a drilling method for forming a well hole. Background technique [0002] The purpose of drilling is not only to build oil and gas channels, but more importantly, to discover more oil and gas resources and to improve drilling efficiency as much as possible. The problem faced by drilling engineering is always how to ensure "excellent, fast and economical". The research and development of drilling technology has been launched in response to these problems. Among them, "excellent" refers to safety, and "fast" refers to high efficiency, that is, how to safely improve drilling efficiency. "Excellent and fast" is an important goal that oil companies, drilling contractors and technical service companies ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03B13/02E21B17/02E21B7/00
Inventor 高文金刘运荣杨建涂辉董学成蒋洪亮
Owner SINOPEC OILFIELD EQUIP CORP
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