四川盆地西部中三叠统储层特征与类型  

Characteristics and Types of Middle Triassic Reservoir in Western Sichuan Basin

作　　者：秦川[1] 刘树根[1] 汪华[2] 彭靖淞 王国芝[5] 张长俊[1] 

机构地区：[1]成都理工大学油气藏地质及开发工程国家重点实验室,成都610059 [2]中国石油西南油气田公司勘探开发研究院,成都610051 [3]中国海洋石油天津分公司 [4]渤海油田勘探开发研究院,天津300452 [5]成都理工大学地球科学学院,成都610059

出　　处：《地质科技情报》2012年第1期56-62,共7页Geological Science and Technology Information

基　　金：中石化前瞻性项目"华南古板块地裂运动与海相油气前景"(PH08001)

摘　　要：主要通过中46井、青林1井、川科1井、龙深1井等的钻井岩心、岩石薄片、岩石样品地球化学的分析测试,并结合四川盆地西部地区中三叠统雷口坡组钻井、录井、测井资料,对川西雷口坡组储层的储集岩性、储集空间、物性特征等进行了详细研究,进而对储层类型进行了划分,并指出了影响其发育的主要控制因素,以期对川西雷口坡组的勘探提供理论基础,明确勘探方向。研究区中三叠统储层主要发育层位为雷三段,储集岩性主要为(藻)砂屑白云岩、残余砂屑白云岩和藻团块白云岩等各类颗粒白云岩和藻黏结白云岩,储集空间以各类次生溶蚀孔隙为主(如粒间溶孔和粒内溶孔),属于中孔中低渗和中孔高渗的孔隙型和裂缝-孔隙型储层。储层可划分为3种类型:(礁)滩相白云岩型储层、风化壳岩溶型储层和热液白云岩型储层,其形成发育受沉积作用、成岩作用和构造作用(抬升和断裂活动)的明显影响和控制。Based on the data of drilling wells and well logging, this paper studied the reservoir rocks, pore types and physical property of middle Triassic in western Sichuan Basin, dividing the reservoir types, and then pointed out the controlling factors for the reservoir development. The good reservoir in Middle Trias- sic （Leikoupo Formation） in western Sichuan Basin concentrates fn segment 3, and the reservoir rocks are chiefly diverse grain dolostone and algae-bounding dolostone. Their main reservoir spaces are various dis- solution pores, such as interparticle solution pores and intraparticle solution pores. The Middle Triassic reservoir can he divided into three types, which are （reef） bank-facies dolomite reservoir, karst reservoir and hydrothermal dolomite reservoir. Their development are mainly controlled by deposition, diagenesis and tectonic action （uplifting and faulting）.

关 键 词：四川盆地 中三叠统 储层特征 雷口坡组 

分 类 号：P618.130.21[天文地球—矿床学]