A Method for Acquiring the Horizontal Offset Trajectory of Drill Bit

Abstract

An embodiment of the invention discloses a bit horizontal deviation trajectory acquisition method. The method comprises collecting a tool face angle of a current bit and acquiring time take to collect the tool face angle; determining a corresponding point of the current bit in a preset compass plot according to the tool face angle of the current bit and the time taken to collect the tool face angle, wherein the preset compass plot comprises n concentric circles and a reference ray using a center of circle of the concentric circles as an endpoint, each circle represents the time taken to collect the tool face angle, an included angle made by a first line and the reference ray represents the tool face angle, the first line is a line between the point in the preset compass plot and the center of circle, and n is a natural number greater than or equal to 1. The method of the embodiment enables a variation relationship between the horizontal deviation trajectory of the bit and the time visually and accurately.

Description

technical field [0001] The present application relates to the technical field of petroleum and natural gas, in particular to a method for acquiring a horizontal offset trajectory of a drill bit. Background technique [0002] With the continuous development of downhole logging while drilling and steering technology in drilling engineering, logging while drilling methods are also constantly enriched. Conventional logging-while-drilling methods such as gamma ray, neutron porosity, lithology density, phase shift resistivity and attenuation resistivity can no longer meet the growing downhole requirements of drilling engineering. New technologies such as azimuth logging while drilling, quantitative imaging logging with multiple detection depths, near-bit geosteering logging, and rotary steering logging are constantly emerging. Diverse logging-while-drilling and steering technologies provide geologists with abundant downhole information, which can be uploaded from downhole to the ...

AI Technical Summary

Problems solved by technology

[0008] The coordinate points shown in the traditional compass map only reflect the sequence of collection, not the time interval of each collection

In addition, the coordinate points displayed in the traditional compass diagram can only be consistent with the number of circles, and each coordinate point is separated and unrelated

Therefore, according to the coordinate points shown in the traditional compass diagram, the relationship between the horizontal offset trajectory of the drill bit and the time cannot be judged intuitively and accurately.

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