CAJ | 학술논문

成岩相研究为重要和有效的储层预测技术方法之一。通过钻井岩心描述、薄片鉴定、样品分析，对川东地区五百梯气田石炭系黄龙组碳酸盐岩储层的岩石学、成岩作用、裂缝和储集空间类型等特征进行了综合研究，划分出5种储层成岩相类型，确定以早-中成岩阶段埋藏白云化-晶间孔成岩相为基础，叠加古表生期大气水溶蚀改造的中等溶蚀-孔洞缝成岩相和强溶蚀-角砾成岩相为有利于储层发育的优势成岩相，储集空间主要为粒间和粒内溶孔、晶间溶孔、铸模孔和各种超大溶孔、溶洞和构造裂缝及溶裂缝，认为沉积环境控制了有利储层分布相带、早成岩阶段埋藏白云化奠定了储层发育基础，古表生期喀斯特作用扩大了储层分布范围和发育规模，而破裂作用是提高储层质量的关键。
성암상연구위중요화유효적저층예측기술방법지일。통과찬정암심묘술、박편감정、양품분석，대천동지구오백제기전석탄계황룡조탄산염암저층적암석학、성암작용、렬봉화저집공간류형등특정진행료종합연구，화분출5충저층성암상류형，학정이조-중성암계단매장백운화-정간공성암상위기출，첩가고표생기대기수용식개조적중등용식-공동봉성암상화강용식-각력성암상위유리우저층발육적우세성암상，저집공간주요위립간화립내용공、정간용공、주모공화각충초대용공、용동화구조렬봉급용렬봉，인위침적배경공제료유리저층분포상대、조성암계단매장백운화전정료저층발육기출，고표생기객사특작용확대료저층분포범위화발육규모，이파렬작용시제고저층질량적관건。
The diagenetic facies analysis is an important and effective method of the reservoir prediction.By drilling core description,thin section identification and sample analysis,the authors make a comprehensive study of the petrology, diagenesis, cracks and spaces of the Upper Carboniferous Huanglong Formation carbonate rock reservoirs in the Wubaiti gas field and determine five kinds of diagenetic facies.They believe that,based on the early to middle burial dolomitization and intergranular pore diagenetic facies,the superimposing medium solution-pores,holes and fracture diagenetic facies and strong dissolution-brecciated diagenetic facies modified by atmospheric water dissolution in the ancient supergene are the predominant facies favorable for the reservoir development.The reservoir spaces are mainly intergranular and intragranular solution pores, intercrystalline solution pores,moldic pores and various oversized solution holes and caves,structural cracks and solution fractures.It is concluded that the depositional environment has controlled the distribution of the favorable reservoirs,the burial dolomitization in the early diagenesis laid a foundation for the reservoir development,the dissolution in the ancient supergene expanded the karst reservoir distribution and developmental scale,and the fracturing is the key to raise the quality of the reservoir.