渤海湾盆地廊固凹陷古近系沙河街组油藏单元精细表征

doi:10.12108/yxyqc.20230509

岩性油气藏 ›› 2023, Vol. 35 ›› Issue (5): 92–99.doi: 10.12108/yxyqc.20230509

渤海湾盆地廊固凹陷古近系沙河街组油藏单元精细表征

胡望水^1,2, 高飞跃^1,2, 李明³, 郭志杰⁴, 王世超⁴, 李相明^1,2, 李圣明⁵, 揭琼⁶

1. 长江大学地球科学学院, 武汉 430100;
2. 长江大学油气资源与勘探技术教育部重点实验室, 武汉 430100;
3. 中国石化江汉油田分公司江汉采油厂, 湖北潜江 433128;
4. 中国石油华北油田公司开发部, 河北任丘 062552;
5. 中国石油华北油田公司勘探开发研究院, 河北任丘 062552;
6. 中国石油华北油田公司第四采油厂, 河北廊坊 065000

收稿日期:2023-02-08 修回日期:2023-08-22 出版日期:2023-09-01 发布日期:2023-09-28
第一作者:胡望水（1963—），男，博士，教授，主要从事油气构造和勘探开发方面的教学与研究工作。地址：（430100）湖北省武汉市蔡甸区大学路111号。Email：huwangshui@126.com。
通信作者: 高飞跃（1999—），男，长江大学在读硕士研究生，研究方向为数字岩心分析及储层评价。Email：1260685786@qq.com。
基金资助:
国家科技重大专项 “渤海湾盆地精细勘探评价关键技术”（编号： 2016ZX05006-002）资助。

Fine characterization of reservoir units of Paleogene Shahejie Formation in Langgu Sag，Bohai Bay Basin

HU Wangshui^1,2, GAO Feiyue^1,2, LI Ming³, GUO Zhijie⁴, WANG Shichao⁴, LI Xiangming^1,2, LI Shengming⁵, JIE Qiong⁶

1. College of Earth Sciences, Yangtze University, Wuhan 430100, China;
2. Key Laboratory of Exploration Technologies for Oil and Gas Resources, Ministry of Education, Yangtze University, Wuhan 430100, China;
3. Jianghan Oil Production Plant, Sinopec Jianghan Oilfield Company, Qianjiang 433128, Hubei, China;
4. Department of Development, PetroChina Huabei Oilfield Company, Renqiu 062552, Hebei, China;
5. Research Institute of Exploration and Development, PetroChina Huabei Oilfield Company, Renqiu 062552, Hebei, China;
6. No. 4 Oil Production Plant, PetroChina Huabei Oilfield Company, Langfang 065000, Hebei, China

Received:2023-02-08 Revised:2023-08-22 Online:2023-09-01 Published:2023-09-28

摘要/Abstract

摘要： 依据岩心相、测井相、岩屑分析化验等资料，利用点-线-面的油藏单元表征方法，对渤海湾盆地廊固凹陷古近系沙河街组的微构造、主力层油藏单元类型及油水连通关系进行了详细研究。研究结果表明： ①廊固凹陷古近系沙河街组主要发育构造型油藏单元和“断砂配置”型油藏单元。安11井区Es₄^上-Ⅰ砂组1小层、2小层、3小层和4小层的油藏单元数量分别为6个、5个，3个和2个；安22井区Es₃^中-Ⅱ砂组3小层和7小层的油藏单元均为5个，其他小层油藏单元数量不等。②安11井区Es₄^上-Ⅰ砂组油藏单元砂体连通程度和流体连通程度均较高；安22井区Es₃^中油藏单元类型、空间分布特征均较为复杂，油藏单元砂体连通程度较高、流体连通程度相对较低。③在实施油藏单元作为开发单元后，安11井区和安22井区各小层的单井日产原油量均有增加。通过油藏单元的精细表征，不仅能发现勘探开发中的滚动评价目标，而且可为开发过程中动态储量及经济可采储量的标定提供准确的油层厚度、油藏边界及油藏分布范围等。

关键词: 微构造, 沉积微相, 砂体连通程度, 构造型油藏单元, “断砂配置” 型油藏单元, 沙河街组, 古近系, 廊固凹陷, 渤海湾盆地

Abstract: Based on data of core facies，logging facies and rock fragment analysis，the microstructure，reservoir unit types and oil-water connectivity of Paleogene Shahejie Formation in Langgu Sag of Bohai Bay Basin were studied using a point-line-surface representation method. The results show that：（1）The Paleogene Shahejie Formation in Langgu Sag mainly has two types of reservoir units，namley，structural reservoir units and “fault sand configuration” reservoir units. There are six，five，three and two reservoir units in No. 1 to No. 4 sublayers of Es₄-Ⅰ sand group in An 11 well area，respectively. There are five reservoir units in both No. 3 and No. 7 sublayers of Es₃-Ⅱ sand group in An 22 well area，while the number of reservoir units in other sublayers varies.（2）The reservoir units of the upper Es₄-Ⅰ sand group in An 11 well area have high connectivity of sand bodies and fluids， while the reservoir units of middle Es₃ in An 22 well area have complex types，complex distribution，high sand body connectivity and relatively low fluid connectivity.（3）After implementing the reservoir units as development units，the daily crude oil production of each sublayer in An 11 and An 22 well area has increased. Fine characterization of reservoir units is favorable for indentifing the rolling evaluation objectives in exploration and development，and it also can determine accurate reservoir thickness，reservoir boundaries and reservoir distribution range for the calibration of dynamic reserves and economically recoverable reserves during the development process.

Key words: microstructure, sedimentary microfacies, sand body connectivity degree, structural reservoir unit, “fault sand configuration” reservoir unit, Shahejie Formation, Paleogene, Langgu Sag, Bohai Bay Basin

中图分类号:

TE122.1

胡望水, 高飞跃, 李明, 郭志杰, 王世超, 李相明, 李圣明, 揭琼. 渤海湾盆地廊固凹陷古近系沙河街组油藏单元精细表征[J]. 岩性油气藏, 2023, 35(5): 92–99.

HU Wangshui, GAO Feiyue, LI Ming, GUO Zhijie, WANG Shichao, LI Xiangming, LI Shengming, JIE Qiong. Fine characterization of reservoir units of Paleogene Shahejie Formation in Langgu Sag，Bohai Bay Basin[J]. Lithologic Reservoirs, 2023, 35(5): 92–99.

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渤海湾盆地廊固凹陷古近系沙河街组油藏单元精细表征

Fine characterization of reservoir units of Paleogene Shahejie Formation in Langgu Sag，Bohai Bay Basin

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