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黄骅坳陷滨海地区沙河街组三段储层是中国深部油气勘探的新层位之一。为揭示该区油气成藏演化,对储层中流体包裹体岩相学特征、产出特征、包裹体均一温度和含油包裹体丰度进行了研究。结果表明,沙河街组三段储层中存在三期油气包裹体,分别代表了三期油气注入。Ⅰ期包裹体的均一温度为86℃~126℃,GOI为15%~35%,油气充注时期为36~25 Ma,开始有油气进入到储层中;Ⅱ期包裹体的均一温度为120℃~140℃,GOI为30%~60%,油气注入时期为27~12 Ma,烃源岩进入生排烃高峰期,发生大规模油气运聚,是主要的成藏时期;Ⅲ期包裹体的均一温度为138℃~155℃,GOI为1%~8%,油气注入时期为12~6 Ma,油气运移规模急剧减小。 相似文献
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中国新星石油有限责任公司是以原地矿部石油海洋地质队伍为基础组建起来的,作为我国石油战线的三大主力军之一,面临由计划经济体制下的行政事业单位向符合现代企业制度要求的企业公司体制转变,原专业施工作业队 相似文献
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As a clean and rich energy source,natural gas hydrate has become a focus of study in the world.In this paper,the geologic condition of hydrate reservoir is analyzed. Combining with the natural gas hydrate drilling characteristics and drilling accidents,prevention and response methods are discussed.It is proposed that to restrain and control natural gas hydrate decomposition is the key to safety drilling,in which a reasonable choice of drilling fluid system is important.Some performance parameters should be taken into account in the selection of drilling fluid.The basic parameters requirements of natural gas hydrate drilling are also analyzed. 相似文献
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