杏北油田低弯度分流河道储层构型及其控制的剩余油分布模式

doi:10.19657/j.geoscience.1000-8527.2018.01.17

现代地质 ›› 2018, Vol. 32 ›› Issue (01): 173-182.DOI: 10.19657/j.geoscience.1000-8527.2018.01.17

杏北油田低弯度分流河道储层构型及其控制的剩余油分布模式

李伟强¹^,²(), 尹太举²(), 赵伦¹, 李峰³, 谢鹏飞², 阳成⁴, 严少怀⁵

1.中国石油勘探开发研究院,北京 100083
2.长江大学地球科学学院,湖北武汉 430100
3.中国石油天然气勘探开发公司,北京 100034
4.中国石油青海油田采油一厂,甘肃敦煌 736202
5.中国石油大庆头台油田开发有限责任公司,黑龙江大庆 166512

收稿日期:2017-05-20 修回日期:2017-07-17 出版日期:2018-02-10 发布日期:2018-02-05
通讯作者: 尹太举,男,教授,博士生导师,1971年出生,石油地质学专业,主要从事储层沉积学和开发地质的研究及教学工作。Email:yintaij@yangtzeu.edu.cn。
作者简介:尹太举,男,教授,博士生导师,1971年出生,石油地质学专业,主要从事储层沉积学和开发地质的研究及教学工作。Email:yintaij@yangtzeu.edu.cn。
李伟强,男,博士研究生,1990年出生,油气田开发工程专业,从事油气田开发地质方面的研究。Email:liweiq0608@163.com。
基金资助:
国家自然科学基金项目(41172106);国家自然科学基金项目(41072087);国家科技重大专项(2011ZX05010-002-005)

Architecture Characteristics of Low Sinuosity Distributary Channel Reservoir and Its Controlling Factors on Residual Oil Distribution: A Case Study of Xingbei Oilfield, China

LI Weiqiang¹^,²(), YIN Taiju²(), ZHAO Lun¹, LI Feng³, XIE Pengfei², YANG Cheng⁴, YAN Shaohuai⁵

1. PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China
2. College of Geoscience,Yangtze University,Wuhan,Hubei 430100,China
3. China National Oil and Gas Exploration and Development Corporation,Beijing 100034,China
4. No.1 Oil Producing Plant, PetroChina Qinghai Oilfield Company, Dunhuang, Gansu 736202,China
5. PetroChina Toutai Oilfield Development Company, Daqing,Heilongjiang 166512, China

Received:2017-05-20 Revised:2017-07-17 Online:2018-02-10 Published:2018-02-05

摘要/Abstract

摘要：

低弯度分流河道储层是杏北油田的重要储层类型,深入研究其储层构型特征对于油田调整挖潜意义重大。综合密井网岩心、测井和生产动态等资料,采用“层次分析和模式指导”的方法,分“复合河道和溢岸砂体、单期河道及其相互接触关系”两个主要层次开展储层构型精细解剖,构建了三维储层构型模型。基于密闭取心井、水淹层测井解释资料和生产动态数据分析了不同时期的水淹特征和剩余油分布,并通过基于三维构型模型的油藏数值模拟对剩余油分布模式进行验证,最终总结出不同储层构型控制下的剩余油富集模式。结果表明,在河道内,剩余油在顶部、边部、河道间夹层控制部位以下以及仅与低渗溢岸砂连通造成注采不完善的河道内部富集;在河道外,剩余油在河间物性较差的溢岸砂内、注采不完善的溢岸砂末端和孤立砂体内富集。

关键词: 低弯度分流河道, 储层构型, 密井网, 三维构型模型, 油藏数值模拟, 剩余油分布模式

Abstract:

Low-sinuosity distributary channel reservoir is an important reservoir type of Xingbei oilfield and it is of great significance to further study its reservoir architecture characteristics for the adjustment and potential tapping. Based on the data of cores, wire-line logs and production performance from close well-spacing block, the reservoir architecture of low sinuosity distributary channel in Xingbei oilfield was finely analyzed by using “hierarchy analysis and depositional pattern guidance” with two primary hierarchies which were the determination of amalgamated channels and overbank sandstone bodies and the contact relationships among solitary channels. The 3-D reservoir architecture model was then established. Based on the static data of sealed coring wells and water-cut well-logging interpretation results and the production performance data, the waterflooding features of different periods and distribution of remaining oil were analyzed. Subsequently, the distribution of remaining oil was verified by numerical reservoir simulation based on 3-D reservoir architecture model. Finally, the distribution of remaining oil controlled by the reservoir architecture was summarized and demonstrated as follows: within the channel, the remaining oil volumes are enriched in the top and edge of the channel, the lower areas controlled by mud or calcareous interbeds between individual channels and undeveloped areas just connecting with low-permeability overbank sands. Outside the channel, they are mainly in low-permeability overbank sands, end of the overbank sands and the isolated sandstone bodies with imperfect injection-production systems.

Key words: low-sinuosity distributary channel, reservoir architecture, close well-spacing, 3-D reservoir architecture model, numerical reservoir simulation, distribution of remaining oil

中图分类号:

TE122.2

李伟强, 尹太举, 赵伦, 李峰, 谢鹏飞, 阳成, 严少怀. 杏北油田低弯度分流河道储层构型及其控制的剩余油分布模式[J]. 现代地质, 2018, 32(01): 173-182.

LI Weiqiang, YIN Taiju, ZHAO Lun, LI Feng, XIE Pengfei, YANG Cheng, YAN Shaohuai. Architecture Characteristics of Low Sinuosity Distributary Channel Reservoir and Its Controlling Factors on Residual Oil Distribution: A Case Study of Xingbei Oilfield, China[J]. Geoscience, 2018, 32(01): 173-182.

图/表 7

图1 高弯度分流河道与低弯度分流河道的复合河道测井响应特征(两侧为比例尺,单位m)

Fig.1 Log response of amalgamated channel between high and low sinuosity distributary channel

图2 研究区S23-1沉积单元小层微相平面图

Fig.2 Plan view of sedimentary micro facies of S23-1 layer in study area

图3 单期河道接触关系

Fig.3 Contact relationships of single channel

图4 杏二中区低弯度分流河道储层构型橫剖面(垂直物源方向，S23-S24-1层段)

Fig4 Prcfiles of architectural characteristics of low sinuosity distributary channel reservoir in typical research area

图5 杏二中区低弯度分流河道储层不同时期水淹过程剖面(垂直物源方向3号剖面)

Fig.5 Water out profiles cflow sinuosity distributary channel reservoit in different production stages

图6 基于低弯度分流河道储层结构和密闭取心井验证的剩余油分布模式 (杏二中区S23—S24-1层段2号剖面,(d)、(e)、(f)为X2-10-J3E7井,(g)为X2-1-J29井)

Fig.6 Distribution patterns of remaining oil pockets based on low sinuosity distributary channel architecture and verification of sealed cored wells

图7 构型模型切片和相应切片数值模拟结果(S23—S24-1层段2号剖面)

Fig.7 The slice of architectural model and the corresponding numerical simulation results

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杏北油田低弯度分流河道储层构型及其控制的剩余油分布模式

Architecture Characteristics of Low Sinuosity Distributary Channel Reservoir and Its Controlling Factors on Residual Oil Distribution: A Case Study of Xingbei Oilfield, China

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