渤海湾盆地渤中凹陷深埋古潜山天然气成藏主控因素探讨

发布时间：2018-04-11 20:33

本文选题：渤中凹陷 + 科学探索井　；参考：《中国石油大学学报(自然科学版)》2017年01期

【摘要】：渤中凹陷钻探的两口科学探索井均在古生界潜山发现天然气流,其中科A2井经测试获日产天然气40.2×10~4m~3,揭示了渤海海域目前埋深最大、温度最高的古潜山天然气藏。根据渤中凹陷渤中21~22古潜山油气成藏条件和实际地质、测井和地震资料的综合解释,对研究区天然气成藏控制要素进行研究。结果表明:古潜山圈闭面积大,且具有完整背斜形态;深层沙四段—东三段发育大量优质高成熟烃源岩,油气源充足;古潜山储集空间为溶蚀孔洞和裂缝,储层物性较好;成藏要素匹配关系好,天然气具有明显的晚期持续充注成藏的特点。该古潜山气藏的发现,不仅是渤中凹陷深埋古潜山天然气勘探的重大突破,也是深埋古潜山油气成藏地质条件认识和勘探工程技术进步的重大成果,能够推动渤海海域乃至整个渤海湾盆地凹中深埋古潜山的油气勘探工作。
[Abstract]:According to the oil and gas reservoir forming conditions and the actual geological, logging and seismic data interpretation of the buried hill in Bozhong Sag, the control factors of natural gas accumulation in the study area are studied.The results show that the trap area of the buried hill is large and has a complete anticline shape, a large number of high quality and mature hydrocarbon source rocks are developed in the deep formation of the 4th to the east of Shahejie formation, and the oil and gas sources are abundant, the reservoir space of the buried hill is composed of dissolved pores and fractures, and the reservoir physical properties are good.The matching relation of reservoir forming elements is good, and natural gas has obvious characteristics of late continuous filling and reservoir forming.The discovery of the buried hill gas reservoir is not only a major breakthrough in the exploration of deep buried buried hill natural gas in Bozhong Sag, but also a major achievement in understanding the geological conditions of oil and gas accumulation in the buried hill and in the progress of exploration engineering technology.It can promote the oil and gas exploration in the Bohai Sea area and even the deep buried buried hill in the depression of the Bohai Bay basin.
【作者单位】：中海石油(中国)有限公司天津分公司;
【基金】：国家科技重大专项(2011ZX05023-006)
【分类号】：P618.13

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