Electric scanning method and device for formation interface detection

A technology of formation interface and electrical scanning, which is applied in the direction of earthwork drilling and production, borehole/well components, etc., can solve the problem that the directional resistivity measurement tool cannot meet the actual work needs, so as to improve practicability, ensure efficiency, and improve accuracy Effect

Inactive Publication Date: 2014-03-26
BITSWAVE SUZHOU
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Problems solved by technology

[0009] For this reason, the technical problem to be solved by the present invention is the problem that the directional resistivity measurement tool cannot meet the needs of actual work

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  • Electric scanning method and device for formation interface detection
  • Electric scanning method and device for formation interface detection
  • Electric scanning method and device for formation interface detection

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Embodiment Construction

[0068] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0069] Figure 3A It is the front view of the directional resistivity measurement tool in the embodiment of the present invention. A directional resistivity measurement tool may include a tool housing 300, two transmitters with x- and y-axes: an x-transmitter 304 and a y-transmitter 302, a receiver with a z-axis: a z-receiver machine 306, and the drill bit 112 at the distal end of the tool housing 300. A coordinate system (x, y, z) associated with the tool housing 300 . The direction of the longitudinal axis of the tool housing 300 is defined as the Z-axis of the current coordinate system (x, y, z). The x-transmitter 304, y-transmitter 302, and z-receiver 306 may include one or more antennas for ...

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Abstract

According to an existing underground formation interface detection tool, a tool shell needs to be rotated around an axis so that formation signals around a well can be measured and recorded. The position and the distance of a formation interface are obtained through calculation of the obtained formation signals. However, formation interface information is detected sometimes on the condition that the tool shell is static. The invention provides an electric scanning method and device for formation interface detection so that the position and the distance of a formation boundary can be detected on the static tool shell.

Description

technical field [0001] The present invention relates to the electrical well logging method in oil wells. Specifically, it relates to an electric scanning method and device for formation boundary detection. Background technique [0002] Gathering downhole information typically uses electrical measurement methods such as logging while drilling (“LWD”), measurement while drilling (“MWD”), and wireline logging systems. Well known in the oil industry, these techniques have long been used to obtain downhole information, for example, using formation resistivity (or conductivity; the terms "resistivity" and "conductivity", although opposite in meaning, are used interchangeably in the art) and dielectric constant determine the petrophysical properties of the formation and the liquid it contains. The collected downhole information can help characterize hydrocarbons (such as crude oil or natural gas) in porous formations and reflect other conditions to identify formation boundaries b...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00
Inventor 刘策
Owner BITSWAVE SUZHOU
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