根据地震勘查信息预测火成岩储集体

Prediction of the igneous rock reservoir by using multi-seismic information

由于火成岩具有极强的非均质性,对其识别与预测是油气勘探的难题之一.油气勘探首次综合使用地震速度分析、地震相分析、三瞬信息分析,以及深、浅侧向非常规测井约束反演等技术和方法,有效地识别了胜利油田济阳坳陷三类火成岩储集体:火山碎屑锥体、溢流玄武岩体和辉绿岩侵入体,圈定出它们的横向展布并成功地进行了裂缝储集体的预测,为火成岩油气藏的勘探开发提供了理论依据和技术方法.

It is difficult to predict and research the igneous rock reservoir because of its high heterogeneity. In this paper, multi-seismic information and methods including seismic velocities, seismic facies, three seismic instantaneous information, log constraint inversion of deep, shallow laterolog etc. are used to predict the distributions of the igneous rock reservoir, and good results has been proved by development drilling, which includes the identification of igneous body types by seismic facies, true-false discrimination of igneous rock reservoirs by velocity analysis, the location of boundary and space configuration of igneous bodies by three seismic instantaneous information and the pre-estimation of reservoir beds of fractured intrusive rocks using the technique of unconventional well logging constrained inversion. The comprehensive analysis has effectively identified and blocked out three kinds of igneous rock reservoir bodies (pyroclastic cones, plateau basalt bodies and diabase intrusion) in the Jiyang Depression of the Shengli Oilfield. A successful pre-estimation of oil and gas reservoir beds of fractured intrusive rocks can provide the theoretical reference in the exploration of the oil-gas reservoirs in the igneous rocks.