Multipole acoustic wave imaging well logging-while-drilling device

An imaging logging and multipole technology, which is applied in drilling equipment, measurement, drill pipe, etc., can solve the problems of long sonic logging while drilling, unfavorable maintenance work, and difficulty in ensuring consistency. The effect of advancing the planned profile, keeping the wellbore stable, and reducing the difficulty of machining

Pending Publication Date: 2020-06-16
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing domestic sonic logging while drilling only has the monopole function, which is suitable for longitudinal wave measurement in fast formations. It is necessary to develop a sonic logging while drilling with Reliable P- and S-wave measurements in both
In addition, it is necessary to solve the problem that the existing acoustic logging while drilling instrument with integrated design is too long, and the processing is difficult, which leads to long processing cycle and difficulty in ensuring the reliability and consistency of the instrument, and is not conducive to the development of on-site maintenance work.

Method used

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  • Multipole acoustic wave imaging well logging-while-drilling device
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  • Multipole acoustic wave imaging well logging-while-drilling device

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Embodiment Construction

[0040] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", "side", "end", "side" etc. is based on the Orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0041] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connecti...

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Abstract

The invention discloses a multipole acoustic wave imaging well logging-while-drilling device. According to the device, one end of a sound receiving system is connected with a sound emitting system through a screw thread to form an integrated structure, a sound insulator is arranged at the lower end of the sound receiving system, the interiors of the sound emitting system, the sound receiving system and the sound insulator communicate with one another to form a central water hole, a central flow guide pipe is arranged in the central water hole, a multipole receiving transducer module and a receiving main control circuit module framework are arranged on the sound receiving system, a four-pole emitting transducer, a single-pole emitting transducer and an emitting excitation circuit module framework are arranged on the sound emitting system, the two ends of the central flow guide pipe are connected with the receiving main control circuit module framework and the emitting excitation circuitmodule framework through sealing pressure-bearing connecting devices correspondingly, a receiving main control circuit module is arranged on the receiving main control circuit module framework, and an emitting excitation circuit module is arranged on the emitting excitation circuit module framework. The device can improve well drilling operation, and improve the well drilling safety coefficient.

Description

technical field [0001] The invention belongs to the technical field of oil fields, and in particular relates to a multipole acoustic imaging logging device while drilling. Background technique [0002] The multipole acoustic imaging logging tool while drilling can solve the following key technical problems in drilling engineering and oil and gas exploration: [0003] 1) The combination of acoustic waves while drilling and seismic can solve the urgently needed problems of timely prediction of formation pressure before drilling and evaluation of wellbore stability. [0004] 2) Acoustic logging while drilling is used in deep water exploration to solve the problems of time-depth conversion with seismic data and elastic wave impedance inversion of formation longitudinal and shear wave velocities. [0005] 3) Acoustic logging while drilling is used to solve problems in oil and gas evaluation and geosteering. Compared with neutron and density logging while drilling, measuring form...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/14E21B47/002E21B17/10E21B49/00
CPCE21B47/14E21B17/1042E21B49/00
Inventor 李剑王灿云黄飞李玉霞陈辉娜路涛邹骁胡凯利刘枭
Owner BC P INC CHINA NAT PETROLEUM CORP
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