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根据川东地区高峰场长兴组已钻资料,对长兴组生物礁储层进行了研究。研究表明,川东地区高峰场长兴组生物礁储集岩主要为白云岩类,储集空间有孔隙、溶洞、裂缝3类,其中晶间孔、晶间溶孔、溶洞和粒间溶孔对储层的作用最大。根据野外剖面及钻探资料研究,将长兴组生物礁相划分为礁核(骨架)相、礁滩相和礁顶潮坪相,并对高峰场长兴组生物礁储层进行了预测;高峰场生物礁为点礁,礁区域的南部和东部储层更优;在岩隆(生物礁)相带较可靠的相带区主要分布在北部紧靠礁前附近和凉风垭附近。
According to the data of Changxing Formation in Changfeng Formation in Chendong Province, the reef reservoirs in Changxing Formation were studied. The results show that the reef reservoirs in Changxing Formation of Changfeng Formation in East Sichuan are mainly dolomite reservoirs. There are three types of reservoirs, ie, intergranular pores, intergranular dissolution pores, karst caves and intergranular dissolution pores The role of the reservoir is greatest. According to the field profile and drilling data, the reef facies of Changxing Formation is divided into reef core (skeleton) facies, reef facies and reef top tidal flat, and the reef reservoir in Changxing Formation is predicted; The reefs are point reefs, and the reservoirs in the reefs are more favorable in the southern and eastern parts of the reefs. The more reliable facies belts in the Yanlun (reefs) facies are mainly located in the north near the reefs and in the vicinity of the Liangfada Project.