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A near-bit imaging measurement device and method

An imaging measurement and near-drill technology, which is applied in near-drill imaging measurement devices, display-while-drilling measurement, near-drill gamma and resistivity imaging measurement fields, can solve problems such as no imaging, achieve wireless short transmission, and optimize instrument structure Effect

Active Publication Date: 2021-02-05
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Prior art CN200810114633.X - a geosteering detection system near the drill bit. Although the measurement method near the drill bit is introduced, this technology has no imaging function

Method used

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  • A near-bit imaging measurement device and method
  • A near-bit imaging measurement device and method

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Embodiment Construction

[0046] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0047] Near-drill bit imaging measurement device of the present invention such as figure 1As shown, the present invention adopts scanning imaging method, including an integrated tool face detection sensor, a gamma measurement sensor, a resistivity emitting magnetic ring and a receiving button electrode, and these sensors are installed on the near-drill imaging measurement nipple. Among them, the integrated tool surface detection sensor integrates two fluxgate sensors inside. The angle between the two fluxgate sensors is 90 degrees, one is the X axis, and the other is the Y axis. The angle of the tool face of the entire instrument can be detected, and the sector can be further calculated. The device of the present invention is connected between the drill bit and the drill collar when in use, and then goes down to the bottom of the well, specifically connecting the dri...

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Abstract

The invention provides a near-bit imaging measuring device and method and belongs to the field of measurement while drilling of drilling engineering technologies of oil exploration and development. The near-bit imaging measuring device comprises an integrated tool surface detecting sensor, a gamma sensor, a resistivity transmitting magnetic ring, a receiving button electrode and a circuit board which are mounted on a near-bit imaging measuring short section. The integrated tool surface detecting sensor, the gamma sensor, the resistivity transmitting magnetic ring and the receiving button electrode are connected with the circuit board. The integrated tool surface detecting sensor and the gamma sensor are mounted on a circuit skeleton inside a drill collar; the integrated tool surface detecting sensor is used for detecting the angle of the tool surface; the resistivity transmitting magnetic ring is sleeved with a groove of the drill collar and used for transmitting a 1-10 KHz alternatingcurrent electrical signal and a frequency-shift keying signal; the receiving button electrode is mounted in a groove in the surface of the drill collar; and the circuit board is mounted in a groove of the circuit skeleton.

Description

technical field [0001] The invention belongs to the field of measurement-while-drilling of drilling engineering technology for petroleum exploration and development, and in particular relates to a near-drill bit imaging measurement device and method, which are used for presentation measurement while drilling, especially for near-drill bit gamma and resistivity imaging measurement. Background technique [0002] With the continuous development of oil and natural gas, the development of early conventional oil and gas reservoirs has come to an end, and now it has developed into the development of unconventional oil and gas reservoirs and complex oil and gas reservoirs, from shallow to deep. The construction of directional wells is more and more common in these unconventional oil and gas reservoirs and complex oil and gas reservoirs. With the continuous development of modern electronic measurement technology, near-bit instruments can measure engineering parameters such as well de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/00E21B47/12
CPCE21B47/00E21B47/12
Inventor 倪卫宁丁士东张卫郑奕挺李新亢武臣
Owner CHINA PETROLEUM & CHEM CORP
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