普光气田飞仙关组三段微生物碳酸盐岩储层特征及主控因素  

Characteristics and main controlling factors of the microbial carbonate reservoirs in the 3rd member of Feixianguan Formation in Puguang Gas Field

作　　者：黄长兵 黄泽贵[2] 王小飞 毛超杰 刘开松 王涛[5] 范凌霄[1] 王秉合 HUANG Changbing;HUANG Zegui;WANG Xiaofei;MAO Chaojie;LIU Kaisong;WANG Tao;FAN Lingxiao;WANG Binghe(Exploration and Development Research Institute of SINOPEC Zhongyuan Oilfield, Zhengzhou 450017, China;Zhong yuan Oilfield Company, SINOPEC, Puyang 457001,China;Yumen Project Department of Tuha Branch, PetroChina Well Logging Co Ltd, Jiuquan 735000, China;Research Institute of Exploration and Development, PetroChina Yumen Oilfield Company,Jiuquan 735000,China;Workover Team 2 of PetroChina Yumen Oilfield Operation Company, Jiuquan 735000, China)

机构地区：[1]中国石化中原油田勘探开发研究院,河南郑州450017 [2]中国石化中原油田分公司,河南濮阳457001 [3]中油测井吐哈分公司玉门项目部,甘肃酒泉735000 [4]中国石油玉门油田分公司勘探开发研究院,甘肃酒泉735000 [5]中国石油玉门油田作业公司修井二队,甘肃酒泉735000

出　　处：《大庆石油地质与开发》2021年第1期17-25,共9页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家科技重大专项“高含硫气藏安全高效开发技术(三期)”(2016ZX05017);中国石油化工集团有限公司“十条龙”项目课题一“深层礁滩相储层精细描述”(P18062-1)。

摘　　要：普光气田飞仙关组三段碳酸盐岩气藏储量丰富,动用程度低,是资源接替的重要层系。为了搞清碳酸盐岩储层发育规律及分布特征,综合利用岩心、测井等资料,以储层的沉积环境和成岩演化作用为基础,分析储层岩石结构、孔渗特征和储集空间,进一步研究储层发育的主控因素。研究结果表明:飞三段中、下亚段普遍发育微生物碳酸盐岩,岩石类型以凝块石、叠层石、凝块—叠层石为主,储集岩性主要为凝块云岩、叠层云岩,灰岩岩性致密,储集性能极差,储集空间包括微生物格架孔、体腔孔、凝块间溶孔、晶间孔。储层主要受沉积环境、白云岩化作用以及溶蚀作用的影响,微生物黏结颗粒岩是优质储层形成的基础条件,凝块—叠层结构储层发育,白云化作用有利于孔隙的保存,后期溶蚀作用进一步改善储集空间。研究成果明确了飞三段微生物储层分布特征,为后期井位部署提供指导。The carbonate rocks in the 3rd member of Feixianguan Formation in Puguang Gas Field are characterized by rich reserves and low utilization degree,which have become the important sequence for the resource replacement.In order to make clear of the development laws and distribution characteristics of the carbonate reservoirs,through the comprehensive use of the core,logging and other data,the reservoir rock structure,porosity and permeability characteristics as well as reservoir space were analyzed on the bases of the sedimentary environment and diagenetic evolution of the reservoirs to further study the main controlling factors of the reservoir development.The study results show that the microbial carbonate rocks are wide-developed in the Middle and Lower 3rd submember,the rock types are primarily thrombolitites,stromatolite and clot-stromatolite,and the reservoir lithologies are mainly clot dolomite and stromatolite dolomite.The limestone has extremely poor reservoir properties due to its tight lithology.The reservoir space includes microbe framework pores,microbe visceral pores,interclot dissolved pores and intergcrystal pores,which are mainly affected by sedimentary environment,dolomization and dissolution.The microbial bonded granular rock is the basic condition for the high-quality reservoir formation and the clot-laminated structure reservoirs are well developed.The dolomization is beneficial to the preservation of the pores,and the dissolution in the later stage can further improve the reservoir space.The study results have clarified the distribution characteristics of the microbial reservoirs in 3rd member of Feixianguan Formation and provided the guidance for the later well location deployment.

关 键 词：普光气田 飞仙关组三段 碳酸盐岩 微生物 储层特征 储集空间 主控因素 

分 类 号：TE122.221[石油与天然气工程—油气勘探]