东营凹陷下古生界碳酸盐岩古潜山储层储集空间特征及发育模式

doi:10.11743/ogg20180214

石油与天然气地质 ›› 2018, Vol. 39 ›› Issue (2): 355-365.doi: 10.11743/ogg20180214

东营凹陷下古生界碳酸盐岩古潜山储层储集空间特征及发育模式

昝念民^1,2, 王艳忠^1,2, 操应长^1,2, 远光辉¹, 程鑫¹, 姜伟¹, 贾光华³, 宋明水³

1. 中国石油大学(华东) 地球科学与技术学院, 山东青岛 266580;
2. 海洋国家实验室海洋矿产资源评价与探测技术功能实验室, 山东青岛 266071;
3. 中国石化胜利油田分公司, 山东东营 257015

收稿日期:2017-01-03 修回日期:2017-12-12 出版日期:2018-04-28 发布日期:2018-05-16
通讯作者: 王艳忠(1980-),男,博士、副教授、硕士生导师,沉积学及储层地质学。E-mail:wangyanzhong1980@163.com。 E-mail:wangyanzhong1980@163.com
作者简介:昝念民(1993-),男,硕士研究生,沉积学与储层地质学。E-mail:s16010023@s.upc.edu.cn。
基金资助:
国家科技重大专项（2016ZX05006-007）；中央高校基本科研业务经费专项资助项目（17CX05009，15CX08001A）。

Characteristics and development patterns of reservoir space of the Lower Paleozoic buried hills in Dongying Sag,Bohai Bay Basin

Zan Nianmin^1,2, Wang Yanzhong^1,2, Cao Yingchang^1,2, Yuan Guanghui¹, Cheng Xin¹, Jiang Wei¹, Jia Guanghua³, Song Mingshui³

1. School of Geosciences, China University of Petroleum(East China), Qingdao, Shandong 266580, China;
2. Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong 266071, China;
3. Shengli Oilfield Company, SINOPEC, Dongying, Shandong 257015, China

Received:2017-01-03 Revised:2017-12-12 Online:2018-04-28 Published:2018-05-16

摘要/Abstract

摘要： 渤海湾盆地东营凹陷寒武系和奥陶系碳酸盐岩储层经受多期构造运动及成岩改造，储层非均质性强。综合应用测录井、岩心、薄片、碳氧同位素、流体包裹体及地震资料，系统研究了东营凹陷下古生界碳酸盐岩储层储集空间特征及发育模式。东营凹陷下古生界碳酸盐岩储层储集空间主要包括裂缝、溶洞及溶孔。溶洞包括灰泥溶洞和角砾间溶洞，裂缝主要包括构造缝和溶蚀缝，孔隙主要包括角砾间溶孔、脉内溶孔及晶间溶孔。东营凹陷下古生界碳酸盐岩古潜山主要由残丘型及断块型潜山构成。残丘型潜山主要分布在草桥地区及郑家—王庄地区，垂向上受不整合面影响发育由垂直渗流带及水平潜流带构成的风化壳储层，储集空间主要为高角度裂缝、角砾间溶洞及水平层状溶洞。残丘型潜山表生岩溶带整体较厚，缝洞规模较大，连通性好，具有良好的储集性能。以灰岩为主的残丘型潜山表生岩溶带厚度可达170 m，以白云岩为主的残丘型潜山表生岩溶带厚度较薄，仅为70 m左右。断块型潜山主要分布在高青—平南地区和王家岗地区，受多期断裂活动和深部热液的影响，储集空间主要为断裂带附近和褶皱顶部的裂缝以及沿其分布的溶蚀孔洞。

关键词: 储集空间, 储层发育模式, 碳酸盐岩古潜山, 下古生界, 东营凹陷, 渤海湾盆地

Abstract: The Cambrian and Ordovician carbonate reservoirs in Dongying Sag of the Bohai Bay Basin are highly heterogeneous due to multiple stages of tectonic activities and diagenesis they have experienced.Pore space and its development patterns in the Lower Paleozoic buried hills in Dongying Sag were systematically studies through an integration of logging,core,thin section,carbon and oxygen isotope,fluid inclusion as well as seismic data.The pore space is dominated by fracture,solution cavities and dissolved pore.The solution cavities are mostly of lime mud type and inter-breccia type.The fractures are mainly tectoclases and solution fractures.And the pores include inter-breccia dissolution pores,intra-vein dissolution pores and intercrystalline dissolution pores.The Lower Paleozoic buried hills in Dongying Sag are largely of residual mound-type and fault-block type.The former is distributed in Caoqiao and Zhengjia-Wangzhuang areas and nurtured weathering crust reservoirs with its vertical vadose zone and horizontal phreatic zone caused by unconformities.Pore space there is mostly high-angle fracture,inter-breccia solution cavity and horizontal layered solution cavity.They usually have massive epigenetic karst belt and are high-quality reservoirs for hydrocarbon with well-connected large fractures and pores.The hills dominated by limestone have epigenetic karst belts as thick as 170 m,while those controlled by dolomites have thinner epigenetic karst belts of only 70 m in thickness.The latter is distributed in Gaoqing-Pingnan and Wangjiagang areas.Influenced by multi-stage faulting and deep hydrothermal activities,this type of hills contains mostly reservoirs with pore space dominated by fractures near faults and on crest of folds,as well as dissolution pores and vugs developed along the fractures.

Key words: reservoir space, reservoir development pattern, carbonate buried hill, Lower Paleozoic, Dongying Sag, Bohai Bay Basin

中图分类号:

TE122.1

昝念民,王艳忠,操应长,等. 东营凹陷下古生界碳酸盐岩古潜山储层储集空间特征及发育模式[J]. 石油与天然气地质, 2018, 39(2): 355-365. doi: 10.11743/ogg20180214 Zan Nianmin,Wang Yanzhong,Cao Yingchang,et al. Characteristics and development patterns of reservoir space of the Lower Paleozoic buried hills in Dongying Sag,Bohai Bay Basin[J]. Oil & Gas Geology, 2018, 39(2): 355-365. doi: 10.11743/ogg20180214

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东营凹陷下古生界碳酸盐岩古潜山储层储集空间特征及发育模式

Characteristics and development patterns of reservoir space of the Lower Paleozoic buried hills in Dongying Sag,Bohai Bay Basin

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