摘要
利用依—舒地堑汤原断陷32口井的钻井、录井和测井资料及地球化学资料,研究断陷构造演化特征,分析其天然气成藏条件和气藏类型。根据二维和三维地震资料解释,编制各层构造图,发现和落实各构造层发育的圈闭。在此基础上,对汤原断陷天然气成藏条件进行分析,结果表明:汤原断陷烃源岩主要发育于白垩系和古近系乌云组、新安村组、达连河组一段、宝泉岭组一段;储集层主要发育于白垩系和古近系乌云组、新安村组、达连河组二段、宝泉岭组二段;盖层主要为古近系达连河组一段、宝泉岭组一段。汤原断陷发育自生自储、下生上储、新生古储3种类型生储盖组合。钻井证实汤原断陷发育岩性-构造复合气藏、岩性气藏2种类型气藏,依据地震资料及邻区已知油气藏资料推测汤原断陷还发育构造气藏和地层气藏。
Based on the drilling, logging and geochemical data from 32 wells, the deposit and tectonic evolution feature of the Tangyuan fault depression were studied, and the gas accumulation conditions and gas reservoir types were analyzed. Based on interpretation of 2D and 3D seismic data, the structure map of each layer was plotted and the traps developed in various structural layers were found and confirmed. The source rock of Tangyuan fault depression was mainly developed in Cretaceous, and Eogene Wuyun Formation, Xin＇ ancun Formation, Dalianhe Formation Member 1, and Baoquanling Formation Member 1; the reservoir was mainly developed in Cretaceous, and Eogene Wuyun Formation, Xin＇ancun Formation, Dalianhe Member 2, and Baoquanling Member 2; the caprock was developed in Dalianhe, and Baoquanling Member 1. There developed three types of source-reservoir-caprock assemblages, self-generating ＆ self-preserving, lower-generating ＆ upper-preserving and new-bed-generating ＆ old-bedpreserving. The drilling demonstrated that, there developed two types of gas reservoirs, composition lithologic-structural gas reservoir and lithologic gas reservoir. With reference to the seismic data and known reservoir data in adjacent areas, it is estimated that there also developed structural gas reservoirs and stratigraphie gas reservoirs.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2009年第5期593-600,共8页
Petroleum Exploration and Development
基金
国家油气专项"全国油气资源战略选区调查与评价"项目"东北中新生代断陷盆地群油气资源战略调查及评价"课题(XQ-2004-02)
关键词
成藏条件
气藏类型
构造评价
汤原断陷
reservoir formation conditions
gas reservoir type
structure evaluation
Tangyuan fault depression
