川东北地区黄龙组储层特征及主控因素  

Reservoir characteristics and main controlling factors of Huanglong Formation in Northeastern Sichuan,China

作　　者：陈浩如[1] 郑荣才[1] 罗韧[2] 文华国[1] 陈章[3] 陈思锜 韩建[3] 

机构地区：[1]油气藏地质及开发工程国家重点实验室(成都理工大学),成都610059 [2]中国石油西南油气田分公司川东北气矿,四川达州635000 [3]中国石油西南油气田分公司重庆气矿,重庆400021

出　　处：《成都理工大学学报（自然科学版）》2014年第1期36-44,共9页Journal of Chengdu University of Technology: Science & Technology Edition

基　　金：国家自然科学基金资助项目(41002033);国家科技重大专项(2011ZX05030-003-02)

摘　　要：川东北地区石炭系黄龙组储层受到多种成岩作用影响,对储层发育的控制因素缺乏深入研究而成为制约勘探的难点。通过对川东北地区黄龙组岩石学、沉积相和储层特征的综合研究,认为黄龙组储层主要发育在其第二段的白云岩中,以中-低孔低渗的裂缝-孔隙型储层为主,储集空间主要为晶间孔和各类次生溶孔,裂缝有效地改善了储层的孔渗性,并提供了有效的运移通道。储层发育受到沉积相、白云岩化和喀斯特作用三方面因素控制,属于以沉积相和白云岩化为基础、叠加古喀斯特改造的复杂储层。The exploration of the oil and gas in Huanglong Formation is conditioned by two factors.One is that the Huanglong Formation reservoir is influenced by various diagenesis.The other is that the controlling factors of reservoir development have been not known clearly.In this paper,based on the analysis of petrography,sedimentary facies and reservoir characteristics,the authors think that the reservoir mainly occur in the dolomite of Member 2 of Huanglong Formation.The reservoir is fracture-pore type with medium to low porosity and permeability.The reservoir spaces are mainly intercrystalline pores and secondary dissolved pores.The fractures improve the porosity and permeability and provide the efficient migrating pathway for hydrocarbon.The development of the reservoir is influenced by sedimentary facies,dolomitization and karstification.The reservoir is a complex reservoir that is based on sedimentary facies and dolomitization and overprinted by paleokarstification.All these provide evidences for the furthur oil and gas exploration of Carboniferous in Northeastern Sichuan.

关 键 词：沉积相 白云岩化 古喀斯特 储层 川东北 黄龙组 

分 类 号：TE122.23[石油与天然气工程—油气勘探]