Surface geochemical exploration for petroleum
Surface indications of oil and gas seepage have been noted for thousands of years, and such seeps have led to the discovery of many important petroleum producing areas. Over the past sixty years, numerous geochemical and nonseismic geophysical surface exploration methods have been developed. The application of these geochemical prospecting methods to oil and gas exploration has resulted in varied success and occasional controversy. Few question the fact that hydrocarbons migrate to the surface in detectable amounts, but many remain uncertain of how such information can best be integrated into conventional exploration and development programs. This chapter examines surface geochemical prospecting technology and discusses its application.
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