Exploration of Volcanic Oil and Gas Reservoirs inLiaohe Depression

Abstract

Abstract: Based on the discussion of exploration course, distribution features of volcanic oil reservoirs in Liaohe Depression and these oil reservoirs' characteristics, the reservoiring mechanismof volcanicoil and gas reservoirs has been concluded as follows: structure condition would be thekey factor, oil source might be the base and lithologic condition can be as important complementarity. The exploration technologies, include seismic pattern recognition, log distinguish, lithologic identification, lothologic-facies analysis, reservoir prediction and fracture prediction technologies, have been concluded. Taking the volcanic exploration of eastern sag in LiaoheDepression as an example, the effect of exploration and development of volcanic reservoirswas analyzed.Up to the present, the important breakthrough hasbeen made in entire volcanic rocks in eastern area, discovering trachyte and dolerites oil reservoirs. InwhichHuangshatuo oilfield belongs to trachyte oil reservoir,has been built the reserves level often thousand-ton and formed certain production capacity. Through further exploration, some cases' result analysis reflect that the volcanic gas reservoirs have big potential and promising prospects for exploration and development,whereit ,asoil/gas explorationfrontiers, is worthto paya special attentionin the future exploration

Key words: volcanic oil/gas reservoirs, reservoiring mechanism, exploration technology, Liaohe Depression, trachyte oil reservoir, ten thousand-ton reserves;oil/gas explorationfrontiers

CLC Number:

P618.130.8

Zhang Zhanwen, Chen Zhenyan, Cai Guogang and Ma Zhihong. Exploration of Volcanic Oil and Gas Reservoirs inLiaohe Depression[J]. China Petroleum Exploration, 2005, 10(4): 16-22,84.

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Exploration of Volcanic Oil and Gas Reservoirs inLiaohe Depression

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