NATURAL GAS EXPLORATION POTENTIAL OF SINIAN IN THE MIDDLE OF SICHUAN BASIN
-
摘要: 运用气藏地球化学研究方法,对安平1井、高科1井的储层沥青生物标志化合物特征、天然气非烃组分、甲烷碳同位素特征进行了研究,认为安平店-高石梯地区的油源和气源均来自下寒武统筇竹寺组泥岩.并结合区域构造发展史和岩石薄片等基础地质研究,提出了该区震旦系的油气成藏模式,指出安平店-高石梯构造具有较好的天然气勘探前景,主要产层应为震旦系灯影组四段.要找到具有工业价值的天然气,其关键在于寻找好的储层,应避开沥青封堵带打井.Abstract: Characteristics of natural gas and reservoir bitumen in the area of Anpingdian-Gaoshiti have been studied by means of gas reservoir,and it is concluded that,source of oil and gas is mudstone in the Qiongzhusi group of Cambrian.Combined with history of regional structure and thin-section analysis,it is suggested that,there are 4 periods of oil and gas accumulation.It is also pointed out that,exploration potential of natural gas in the 4th section of Dengying group of Sinian in the Anpingdian-Gaoshiti area is good,and the key of drilling is to find good reservoir and to avoid drilling on the belt of bitumen seal.
-
[1] 李国辉,李翔,杨西南.四川盆地加里东古隆起震旦系气藏成藏控制因素[J].石油与天然气地质,2000,21(1):80~82 [2] 罗志立,刘顺,徐世琦.四川盆地震旦系含气层中有利勘探区块的选择[J].石油学报,1998,19(4):1~7 [3] 徐世琦.加里东古隆起震旦系-寒武系成藏条件[J].天然气工业,1999,19(4):7~10 [4] 邓涛.四川盆地加里东古隆起的构造机制和成藏模式[J].石油实验地质,1996,18(4):356~360 [5] 陈宗清.展望四川地区海相地层非构造油气藏勘探前景[J].石油实验地质,1986,8(4):301~305 [6] Krooss B M,Littke R,Muller B,et al.Generation of nitrogen and methane from sedimentary organic matter:implications on the dynamics of natural gas accumulations[J].Chem Geol,1995,(126):291~318
计量
- 文章访问数: 738
- HTML全文浏览量: 83
- PDF下载量: 330
- 被引次数: 0