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贵州赤水地区位于四川盆地南缘,迄今仅发现旺隆、太和2个气田和1个含气构造,未打开天然气勘探局面。近年来,通过对地质、钻井、开发及物探资料的综合研究,发现该区具有扩大勘探场面,发现新气田,显著增加天然气储、产量的有利地质条件。其根据是:沉积巨厚,达万米以上,有多套良好的生油气层系,初估生气量达2000亿m~3;在地史发展中处于加里东期黔中古隆起和印支期沪州古隆起的斜坡带,有利于气的运聚;区内存在东西向和南北向两组构造,潜伏构造发育,已发现圈闭19个;钻井证实该区为具多压力系统、多产层、多气藏类型的复合含气区,有利于大幅度增加天然气储、产量;钻井中气显示遍及志留系至侏罗系各层,有许多潜在气层有待发现;区内地表分布侏罗、白垩系,地腹膏盐层发育,保存条件很好。由此认为,扩大旺—太构造区的勘探范围,主攻南部低构造区,有可能使该区的天然气勘探取得突破性进展。
The Chishui area of Guizhou Province is located in the southern margin of the Sichuan Basin. So far, only two gas fields of Wanglong and Taihe and one gas-bearing structure have been discovered, so that natural gas exploration has not been opened up. In recent years, through a comprehensive study of geology, drilling, development and geophysical data, it has been found that the area has the favorable geological conditions for expanding prospecting fields, discovering new gas fields and significantly increasing natural gas reserves and yields. The basis is: thick sediment, more than ten thousand meters, there are many sets of good oil and gas system, the initial estimate of gas production reached 200 billion m ~ 3; in the history of the development in the Caledonian Guizhou paleo uplift and Indosinian The paleo-uplift of Huzhou slope zone is favorable for gas migration and accumulation. There are two groups of structures, east-west direction and north-south direction in the area, and latent structures are developed. Traps have been found in 19 areas. Drilling confirmed that the area is a multi-pressure system with prolific Layer and multi-gas reservoir types are favorable for greatly increasing natural gas reserves and yields. There are many potential gas reservoirs to be found throughout the Silurian to Jurassic formations in the drilling gas; regional surface distribution jurassic Luo, Cretaceous, abalone salt salt development, preservation conditions are good. Therefore, it is believed that expanding the exploration area of the Wang-Tai tectonic area and mainly attacking the southern low-tectonic area may make a breakthrough in natural gas exploration in this area.