Petroleum Exploration History and Enlightenment in Bohai Sea

doi:10.7657/XJPG20210309

Abstract

Abstract:

The Bohai Sea has experienced more than 50 years of oil and gas exploration. Considering the breakthrough in oil and gas exploration domain, reserves growth, operation mode and other factors, the exploration process in the Bohai Sea can be divided into five stages: (1) Early exploration stage (1965-1979): it was dominated by exploration of bulges and buried hills; (2) Foreign cooperation stage (1980-1994): the exploration in this stage was targeted at the Paleogene; (3) Self-driven cooperation stage (1995-2005): its main exploration target was the Neogene; (4) 3D and multi-layer exploration stage (2006-2015); (5) Fine exploration stage (since 2016). Based on the major exploration achievements and milestone exploration events in all stages, this paper systematically summarizes the important theoretical understandings, including the theory of shallow hydrocarbon migration and accumulation, sand control principle of source-sink coupling in time and space, hydrocarbon accumulation mechanism of superimposed strike-slip fault zones, and the deep gas enrichment mechanism with “two highs and one fineness”. These new theoretical understandings further enrich and widen the oil and gas exploration theories, effectively guide the sustaining oil and gas discoveries in Bohai oilfield and have excellent application prospects.

Key words: Bohai Sea, exploration history, oil and gas migration and accumulation, sand control, strike-slip fault, exploration enlightenment

CLC Number:

TE132

HAO Jing, ZHANG Houhe, LI Chunrong, ZHANG Wenzhao, LI Fanyi, YAN Han, XU Qingmei. Petroleum Exploration History and Enlightenment in Bohai Sea[J]. Xinjiang Petroleum Geology, 2021, 42(3): 328-336.

Figures/Tables 7

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