川西新场构造须家河组二段气藏特征
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摘要
新场构造位于四川省德阳市境内,位于该构造范围内的上三叠统须家河组二段气藏目前已有5口井获得了工业气流,其中有3口井还获得了高产工业气流,展示出巨大的勘探开发潜力。为此,结合地震、地质、钻井、测井及测试等资料,研究了该构造须家河组二段气藏的构造、储层、成藏特征。结果认为:新场地区须家河组二段具备规模成藏的圈闭条件,储层砂体发育,裂缝对于改善储层的储渗条件以及获得高产气井发挥着至关重要的作用;"强相位中段,杂乱弱反射特征"为有利储渗体("甜点")的宏观地震响应;今构造对油气调整、富集有着重要的控制作用。
Xinchang structure is located within the boundary of Deyang city, Sichuan province. The gas pool in the Upper Triassic Xujiahe Formation of Xinchang structure currently has 5 wells with tested industrial gas flow, 3 of which are highly gas-rate wells, indicating large exploration and development potentials. Seismic, geologic, drilling, logging and testing data are integrated to study the characteristics of the structures, reservoirs, and hydrocarbon accumulation in this gas pool. The second member of Xujiahe Formation in Xinchang area has the trapping conditions for large scale hydrocarbon accumulation and highly-developed sandbodies. In addition, fractures also play a critical role in improving poroperm characteristics of the reservoirs and drilling highly gas-rate wells. The macroscopic seismic responses of favorable reservoir body (sweet point) are "middle part of strong phase and chaotic weak reflectance signatures". Present structures have a strong control on the adjustment and enrichment of oil and gas.
Xinchang structure is located within the boundary of Deyang city, Sichuan province. The gas pool in the Upper Triassic Xujiahe Formation of Xinchang structure currently has 5 wells with tested industrial gas flow, 3 of which are highly gas-rate wells, indicating large exploration and development potentials. Seismic, geologic, drilling, logging and testing data are integrated to study the characteristics of the structures, reservoirs, and hydrocarbon accumulation in this gas pool. The second member of Xujiahe Formation in Xinchang area has the trapping conditions for large scale hydrocarbon accumulation and highly-developed sandbodies. In addition, fractures also play a critical role in improving poroperm characteristics of the reservoirs and drilling highly gas-rate wells. The macroscopic seismic responses of favorable reservoir body (sweet point) are "middle part of strong phase and chaotic weak reflectance signatures". Present structures have a strong control on the adjustment and enrichment of oil and gas.
引文
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[2]邓康龄,余福林.川西坳陷的复合构造与油气关系[J].石油与天然气地质,2005,26(2):214-219.
[3]张贵生.川西前陆盆地上三叠统天然气勘探潜力及目标分析[M].成都:四川科学技术出版社,2006.
[4]杨克明.川西坳陷须家河组天然气成藏主控因素[M].成都:四川科学技术出版社,2007.
[5]徐天吉,甘其刚,李显贵.裂缝模型的含气响应特征[M].成都:四川科学技术出版社,2007.
[6]蒋裕强,郭贵安,等.川中地区上三叠统香溪群烃源岩热演化史模拟[J].西南石油大学学报,2007,29(2):57-60.
[7]陈义才,蒋裕强,郭贵安,等.川中地区上三叠统香溪群烃源岩热演化史模拟[J].西南石油大学学报,2007,29(2):57-60.
[8]林小兵,刘莉萍,魏力民.川西丰谷地区须四段钙屑砂岩含气储层预测[J].西南石油大学学报,2007,29(2):82-84.
[9]胡晓强,陈洪德,纪相田,等.川西前陆盆地侏罗系层序地层[J].西南石油学院学报,2006,28(2):16-19.
[10]李阳兵,牟中海,谢用良,等.川西拗陷压实规律研究[J].西南石油学院学报,2006,28(6):16-19.
[11]张庄,曾伟,杨西燕.蜀南地区上三叠统须家河组成岩相划分[J].西南石油学院学报,2006,28(6):13-15.
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