Method for utilizing thin-layer interference amplitude recovery to identify oil and gas reservoir
An amplitude recovery, oil and gas reservoir technology, applied in seismology for well logging, earthwork drilling, wellbore/well components, etc., can solve the influence of thickness reduction factor, without considering reservoir thickness, oil and gas reservoir effectiveness Limits and other issues, to achieve the effect of easy operation, strong guidance, and good fit
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[0038] Example 1
[0039] The area of 3D seismic data is 56km 2 , Two exploratory wells A1 and A2 have been drilled. The target layer of Well A1 is a lithologic oil reservoir, and Well A2 has not encountered oil reservoirs, and there is no reservoir on the target layer. The reservoirs in this area have been drilled in the surrounding area. The thickness varies greatly (the thickness ranges from 1 to 9 m). It is found in exploration practice that the thickness of the reservoir has a significant effect on the amplitude. The use of amplitude attributes to identify reservoirs has a certain ambiguity.
[0040] The method for recovering and identifying oil and gas reservoirs by using thin-layer interference amplitude of this embodiment to identify oil and gas reservoirs in the above-mentioned work area includes the following steps:
[0041] 1) According to the drilling data of the work area and neighboring area, the velocity of mudstone is 2747m / s and the density is 2.29g / cm 3 , The spee...
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