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四川盆地中三叠统雷口坡组为四川叠合盆地海相沉积演化史的末期地层,也是目前重点勘探层系之一。随着川西中坝气田雷三段、川中磨溪气田雷一1亚段和龙岗气田雷三段及雷顶风化壳储层研究的突破,四川盆地雷口坡组碳酸盐岩领域的勘探已取得了较为显著的成果。随着勘探的深入,对雷口坡组地层内部划分认识上出现了一定分歧。通过野外的实地踏勘,绘制连井剖面及厚度平面图等,对川西南部地区雷口坡组地层进行了地层划分和对比,明确了顶底界面的特征,为接下来的勘探与开发打下了基础。
The Middle Triassic Leikoupo Formation in Sichuan Basin is the last stage of the marine sedimentary evolution history of the Sichuan superimposed basin and is also one of the key exploration strata. With the breakthroughs of the Leba section of the Zhongba gas field in western Sichuan, the Lei-1 sub-section of the Moxi-Moxi gas field in Sichuan and the Leisandong section of the Longgang gas field and the weathering crust reservoir, the exploration of carbonate rocks in the Leikoupo Formation in the Sichuan Basin has been completed Achieved more significant results. With the deepening of exploration, some discrepancies have emerged in understanding the stratigraphic division of the Leikoupo Formation. Through the field survey and drawing of continuous and thickness plans, the strata of Leikoupo Formation in southwestern Sichuan were stratigraphically divided and compared. The characteristics of the top and bottom interfaces were clarified, which laid the foundation for the following exploration and development.