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Pole plate electrode system for logging instrument

A logging instrument and electrode system technology, applied in wellbore/well components, earthwork drilling, construction, etc., can solve problems such as loss of important information, and achieve the effects of wide coverage, good signal transmission, and increased area

Active Publication Date: 2014-04-16
CNPC GREATWALL DRILLING ENG
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  • Claims
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Problems solved by technology

But in such an environment, the advantages of micro-resistivity imaging technology no longer exist, and conventional micro-resistivity imagers cannot work well in such non-conductive mud
In most cases, the absence of microresistivity borehole imaging represents a loss of information critical to the successful development of the reservoir

Method used

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  • Pole plate electrode system for logging instrument
  • Pole plate electrode system for logging instrument
  • Pole plate electrode system for logging instrument

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Embodiment Construction

[0050] The present invention will be further described in detail in an exemplary manner below in conjunction with the accompanying drawings and specific embodiments.

[0051] figure 1 and figure 2 The structure and composition of the oil-based mud plate electrode system are described, in which the plate assembly includes the plate base 1, the insulating plate 2, the emitter electrode plate 3, the conical spring 4, the emitter electrode sealing plug 5, and the receiving electrode sealing plug 6 And electric buckle 7. A concave portion is provided on the upper surface of the pole plate base 1 . The insulating plate 2 is installed in the concave portion of the plate base 1 , and a pair of grooves are provided at both ends of the insulating plate 2 . A pair of emitter electrode plates 3 is laterally embedded in the groove of the insulating plate 2 . The electric button 7 is embedded in the middle of the insulating board 2 . The pair of emitter electrode plates 3 are arranged...

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Abstract

The invention relates to a pole plate electrode system for a logging instrument. The pole plate electrode system for the logging instrument comprises an insulating plate (2), a pair of emission electrode plates (3) and electric buttons (7), wherein a pair of grooves is formed in the two ends of the insulating plate (2), the emission electrode plates (3) are transversely embedded into the grooves of the insulating plate (2), the electric buttons (7) are embedded into the middle of the insulating plate (2), and the emission electrode plates (3) are symmetrically arranged relative to the electric buttons (7).

Description

technical field [0001] The invention relates to a pole plate assembly in a petroleum well logging instrument, and more particularly relates to a pole plate electrode system of the pole plate assembly. Background technique [0002] Micro-resistivity imaging logging is mainly used for fracture identification and evaluation, high-resolution thin layer evaluation, stratum deposition environment analysis, stratum intra-layer structure and structure interpretation, and core positioning and description. Using microresistivity imaging tools to log wells can obtain real and visualized high-quality borehole geological images. [0003] The micro-resistivity logging tool measures the borehole surface resistivity at a fine scale, and converts the resistivity measurement results into pixel intensity values ​​to obtain borehole wall images. Such logging tools were originally developed for use with conductive drilling fluids such as water-based muds. However, resistive drilling fluids suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/002E21B49/00
Inventor 黄涛魏威刘越闫辰涣谢昱北
Owner CNPC GREATWALL DRILLING ENG
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