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Abstract

Due to the complex surface and subsurface exploration conditions, hydrocarbon reservoir distribution is controlled by many unknown factors, such as structure reservoir, lithologic trap reservoir, stratigraphic trap reservoir, and changes of exploration target, etc., any single geophysical exploration method has higher risk to predict and evaluate the hydrocarbon reservoir. Explorationists have high expectation to identify hydrocarbon target using CSEM method, but its wide applications have been limited due to its low resolution and poor accuracy. Recent years, CSEM and seismic constrained or joint inversion has achieved higher accuracy for electrical anomaly target exploration. Based on this trend, we have developed a new exploration method of the joint TFEM (Time and Frequency domain EM) – Seismic evaluation of risky drilling task. When an exploration area not only has confirmed seismic structure trap and reliable AVO anomaly, but also has matched induced polarization (IP) and resistivity anomaly (R) on the potential exploration target, it will have much lower drilling risk. The wide application of this new exploration method in the west of China has significantly improved the drilling success rate through the using the joint TFEM – Seismic method to predict and evaluate the potential hydrocarbon target.

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/content/papers/10.3997/2214-4609.20140558
2014-06-16
2024-03-28
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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.20140558
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