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四川石油管理局在勘探石炭系天然气方面取得了新的突破。1987年以来,在四川东部接连发现了三个天然气藏,它们是七里峡双家坝潜断高、板东潜断垒及铁山构造。由于石炭系的成层性,发现一口气并就可控制相当的面积。这一发现,进一步展示川东石炭系的勘探前景。七里峡构造东南面双家琐潜断高上的一口探井——七里4井,取心及测井表明,具储集性能的云岩段总厚70米。试油过程中射孔六段,厚34.8米,初测日产气13.48万米~3,酸化后,
Sichuan Petroleum Administration has made new breakthroughs in exploring natural gas of the Carboniferous. Since 1987, three natural gas reservoirs have been successively discovered in the eastern part of Sichuan Province. They are the potential high of the Shijiaxia Shuangjiaba, the eastern submarine barrier and the Tieshanian structure. Due to the stratification of the Carboniferous, it was found that it can control the area at one breath. This discovery further demonstrates the exploration prospects of the Carboniferous in eastern Sichuan. One exploration well-Qilizi-4 well on the Shuangxuozhaodian high in the southeast of the Qilixia structure shows coring and well logging. The total length of the Yunyan section with reservoir properties is 70 meters. The process of perforating six test sections, 34.8 meters thick, the initial test daily production of 134,800 meters 3, after acidification,