Fault block trap determination method, and auxiliary method and device for exploration

Abstract

The invention provides a fault block trap determination method, and an auxiliary method and device for exploration. On one hand, a fault block trap sealed in a butt joint mode can be accurately and rapidly obtained by establishing a fault block oil reservoir geologic model and combining the model with a lithology butt joint profile map edition, the fault block trap sealed in the butt joint mode belongs to class I traps, and sealing performance is good; on the other hand, a method for quantitatively determining the sealing performance of the fault block trap by taking sealing capacity and the trap resource quantity of the maximum hydrocarbon column height into consideration is provided; the main factor of a trapped oil and gas resource quantity is accurately and objectively described; the method has the advantages of standard operation process, scientific and advanced evaluation method and comprehensive consideration factors, improves the reliability and accuracy of the fault block trapevaluation result, greatly reduces the risk and cost of exploration and development, remarkably improves the success rate of exploration deployment and decision making, and has good technical effectsand application prospects.

Description

technical field [0001] The invention relates to the technical field of oilfield exploration, and more specifically, to a method for determining fault block traps, an auxiliary method for exploration, and a device. Background technique [0002] According to statistics, in the practice of exploration and production of fault-block oil and gas reservoirs, 61% of oil and gas exploration failures are due to the failure of fault-block traps. Reliability is even more important. The primary task of evaluating fault-block traps for trap queuing optimization is to determine whether fault-block traps are closed and the amount of resources that traps can seal. However, the evaluation factors of fault-block traps are very complex, and the closure or opening of faults is affected by structural factors, reservoir factors, pressure, section lithology and other factors. The current fault-block trap evaluation methods are basically based on Qualitatively judge whether a fault is closed, star...

AI Technical Summary

Problems solved by technology

[0003] The present invention at least provides a new method for determining fault block traps, which can determine the butt-closed traps with better sealing performance. The butt-closed traps have good sealing performance and belong to Type I traps. Further, the present invention It can also solve the problem that the sealing performance of fault block traps cannot be quantitatively determined at present

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