Compression fault zone structure well logging recognition method
An identification method and fault zone technology, which is applied in earthwork drilling, wellbore/well components, buildings, etc., can solve the problems of not considering the range of curve changes, less parameter selection, and failure to identify the internal structure of the fault zone, etc.
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[0045] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0046] Such as figure 1 As shown, the tectonic stress field is analyzed to determine whether the stress environment in the work area is a compressive stress environment. If it is a compressive stress environment, continue with the following steps.
[0047] Select the target well, filter the logging curve, and determine the abnormal values a and b of the curve.
[0048] Select and calculate the fracture sensitivity parameters: ①Depth and shallow resistivity difference ratio R TC , ②Three porosity logging, ③Curve change rate, ④Diameter increase rate CAL d
[0049] ①Depth resistivity difference ratio R TC :
[0050] Where R D Is the deep lateral logging value or the deep resistivity logging value, R S Is the shallow lateral logging value or the shallow resistivity logging value; the curve F(R TC );
[0051] ②Three porosity logging
[0052] The three-po...
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