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川北地区湖相大安寨段的岩相工作始於1979年5月石龙场构造川30井大安寨段上部钻喷工业性油气流。尔后,为了探索区内控油因素,预测新油气田,指导勘探布署,对岩相的研究逐步深入。自1980年3月到1981年12月,在近两年的时间内,对区内与邻区(包括川中、川西北)计54口钻井的地质资料,周边一些露头剖面的地层、岩相与油气进行了研究。本文就是在此基础上,以推理性的思维方法阐述了作者对川北地区大安寨段的沉积环境及控油(气)的观点。试图激发同行研究者发表不同解释,将川北地区的勘探工作向“准”的方向更推进一步。
The lithofacies work in the Daanzhai section of the lacustrine facies in northern Sichuan began in the upper part of the Da’anzhai section of the tectonic Chuan 30 well in Shilongchang in May 1979 for industrial oil and gas flow. Later, in order to explore the oil controlling factors in the area, the new oil and gas fields were predicted, the exploration and deployment were conducted, and the research on lithofacies progressed gradually. From March 1980 to December 1981, in the past two years, the geological data of 54 wells in the area and adjacent areas (including central Sichuan and Northwest Sichuan), the strata and lithofacies of some outcrop profiles Oil and gas were studied. Based on this, this article elaborates the author’s viewpoints on sedimentary environment and oil control (gas) in Daanzhai Section of North Sichuan by reasoning method. Attempting to inspire peer researchers to issue different interpretations has pushed exploration work in northern Sichuan one step further toward “quasi”.