基于流场强度评价的点坝砂体特高含水期水平井挖潜技术

doi:10.19657/j.geoscience.1000-8527.2020.06.090

现代地质 ›› 2021, Vol. 35 ›› Issue (02): 396-402.DOI: 10.19657/j.geoscience.1000-8527.2020.06.090

基于流场强度评价的点坝砂体特高含水期水平井挖潜技术

郭奇¹^,²(), 李祯³, 李平⁴

1.中国石化胜利油田分公司勘探开发研究院,山东东营 257000
2.胜利石油管理局博士后科研工作站,山东东营 257000
3.胜利石油工程公司测井公司,山东东营 257000
4.中国石油大学(华东) 机电装备总厂,山东青岛 266555

收稿日期:2019-06-20 修回日期:2019-10-09 出版日期:2021-04-25 发布日期:2021-05-25
作者简介:郭奇, 男,博士后,1988年出生,石油与天然气专业, 主要研究方向为油藏工程与油藏描述。Email: qqqqguoqi@163.com。
基金资助:
国家科技重大专项“特高含水期提高采收率技术”(2011ZX05011);长江学者和创新团队发展计划“复杂油藏开发和提高采收率的理论与技术”(IRT1294)

Horizontal Well Potential Digging Technology of Point-bar Sandbody in Ultra-high Water Cut Stage: Evaluation of Flow Field Intensity

GUO Qi¹^,²(), LI Zhen³, LI Ping⁴

1. Exploration and Development Institute, SINOPEC Shengli Oilfield Company,Dongying,Shandong 257000,China
2. Working Station for Postdoctoral Scientific Research, Shengli Oilfield Company,Dongying,Shandong 257000,China
3. Logging Branch of Shengli Petroleum Engineering Company,Dongying,Shandong 257000,China
4. Mechanical and Electrical Equipment Factory,China University of Petroleum (East China),Qingdao,Shandong 266555,China

Received:2019-06-20 Revised:2019-10-09 Online:2021-04-25 Published:2021-05-25

摘要/Abstract

摘要：

针对高含水期油藏点坝砂体剩余油挖潜困难等问题,通过室内实验明确中高渗储层高倍水驱物性变化规律,确定时变数值模拟方法,基于渗流场强度的评价将油藏划分为三类渗流特征分区,通过点坝砂体内部构型的建模方法确定特高含水期水平井的部署位置。研究表明:基于流场强度分布的水平井部署方法能够突出反映高含水期点坝砂体内部流体流动的非均质性,在弱流场强度范围内部署水平井较其他区域部署水平井的开发效果明显改善。将新的方法应用于港东油田二区块NmⅣ-6-3小层,对该小层进行流场评价并部署一口水平井,初期日产油量77.3 t,预测未来第15年末累计产油量16.4×10⁴ t。新的方法为点坝砂体高含水期开发的井位部署提供借鉴思路。

关键词: 中高渗储层, 特高含水期, 点坝沉积, 内部构型, 流场强度

Abstract:

In view of the difficulties in tapping the remaining oil potential of point-bar sandbody in high water cut reservoirs, the changing regularities of physical properties of high water drive in medium and high permeability reservoirs are determined through laboratory experiments, and the time-varying numerical simulation method is determined. Based on the evaluation of seepage field strength, the reservoirs are divided into three types of seepage zones, and the locations of horizontal wells in ultra-high water cut reservoirs are determined by the modeling method of the internal configuration of point-bar sand body. The results show that the method of horizontal well deployment based on flow field intensity distribution can highlight the heterogeneity of fluid flow in point-bar sandbody during the high water cut period, and the development effect of horizontal well deployment in weak flow field intensity range is better improved than in other areas. The new method is applied to Nm IV-6-3 subzone in block 2 of the Gangdong Oilfield. The flow field of the subzone is evaluated and a horizontal well is deployed. The initial daily oil production was 77.3 tons, and the cumulative oil production is predicted to be 164,000 tons at the end of the 15^th years. This new method provides a reference for well location deployment of point-bar sandbody in high water cut stage.

Key words: medium-high permeability reservoir, ultra-high water cut stage, point-bar sedimentation, internal configuration, flow field intensity

中图分类号:

TE341

郭奇, 李祯, 李平. 基于流场强度评价的点坝砂体特高含水期水平井挖潜技术[J]. 现代地质, 2021, 35(02): 396-402.

GUO Qi, LI Zhen, LI Ping. Horizontal Well Potential Digging Technology of Point-bar Sandbody in Ultra-high Water Cut Stage: Evaluation of Flow Field Intensity[J]. Geoscience, 2021, 35(02): 396-402.

图/表 11

图1 高孔渗储层渗透率变化倍数与过水倍数关系图

Fig.1 Relation chart of permeability change multiple and displacing multiple factor in high porosity reservoirs

图2 中低孔渗储层渗透率变化倍数与过水倍数关系图

Fig.2 Relation chart of permeability change multiple and displacing multiple factor in medium-low porosity reservoir

图3 过水倍数与流场强度关系图

Fig.3 Relation chart of displaced multiple factor and flow field intensity

表1 流场强度划分标准

Table 1 Intensity division standard of seepage flow field

渗流场级别	流场强度系数	名称
1	0.65~1	强优势渗流带
2	0.5~0.65	弱优势渗流带
3	0~0.5	非优势渗流带

图4 点坝三维精细概念模型

Fig.4 3D fine conceptual model of point bar

图5 不考虑参数时变影响储层底部流场强度分布图

Fig.5 Strength distribution of flow field at reservoir bottom, without consideration of time-varying parameters

图6 考虑特高含水期参数时变影响储层底层流场强度分布图

Fig.6 Strength distribution of flow field at reservoir bottom, with consideration of time-varying parameters in ultra-high water cut period

图7 点坝砂体排状井网特高含水期剩余油分布图

Fig.7 Residual oil distribution of point-bar sandbody well network in ultra-high water cut period

图8 经济可采区域筛选图

Fig.8 Screening map of economically recoverable areas

图9 港3-37井区NmⅢ-3-6-1点坝内夹层模拟结果

Fig.9 Interlayer simulation results of Nm Ⅲ-3-6-1 point-bar in Gang 3-37 well area

图10 基于流场评价的新水平井井位部署图

Fig.10 Well location map of a new horizontal well based on flow field evaluation

参考文献 18

[1]	高含水期点坝水平井挖潜适应性界限研究[J]. 西南石油大学学报(自然科学版), 2013,35(1):116-121.
[2]	孟立新, 秦永厚, 陈淑琴, 等. 点坝砂体内部剩余油分布及挖潜方法研究[J]. 特种油气藏, 2013,20(4):92-95.
[3]	叶鹏, 沈忠山, 刘明, 等. 水平井挖掘曲流河点坝砂体顶部剩余油方法[J]. 大庆石油地质与开发, 2010,29(4):63-69.
[4]	吴胜和. 提高储层随机建模精度的地质约束原则[J]. 中国石油大学学报(自然科学版), 2001,25(1):1-5.
[5]	吴胜和, 王仲林. 陆相储层流动单元研究的新思路[J]. 沉积学报, 1999,17(2):252-257.
[6]	JU Binshan, FAN Tailiang, ZHANG Jinchuan, et al. Oil viscosity variation and its effects on production performance in water drive reservoir[J]. Petroleum Exploration & Development, 2006,33(1):99-102.
[7]	SONG S. Methods of analyzing water drive characteristics of igneous reservoirs[J]. Journal of Southwest Petroleum Institute, 2000,22(4):28-29.
[8]	ZHOU Z, WANG J, JING Z. Research on the overall optimization method of well pattern in water drive reservoirs[J]. Journal of Petroleum Exploration & Production Technology, 2017,7(2):1-6.
[9]	左松林. 曲流河点坝砂体水平井部署方法[J]. 大庆石油地质与开发, 2011,30(1):70-74.
[10]	赵翰卿. 储层非均质体系、砂体内部建筑结构和流动单元研究思路探讨[J]. 大庆石油地质与开发, 2002,21(6):16-18.
[11]	岳大力, 林承焰, 吴胜和, 等. 储层非均质定量表征方法在礁灰岩油田开发中的应用[J]. 石油学报, 2004,25(5):75-79.
[12]	岳大力, 吴胜和, 刘建民. 曲流河点坝地下储层构型精细解剖方法[J]. 石油学报, 2007,28(4):99-103.
[13]	闫百泉, 张鑫磊, 于利民, 等. 基于岩心及密井网的点坝构型与剩余油分析[J]. 石油勘探与开发, 2014,41(5):597-604.
[14]	陈利敏, 秦荣芳, 蒋艾林, 等. 青海木里三露天天然气水合物钻孔岩心构造裂隙特征[J]. 现代地质, 2015,29(5):1087-1095.
[15]	吴永彬, 张运军, 段文标. 致密油油藏空气泡沫调驱机理实验[J]. 现代地质, 2014,28(6):1315-1321.
[16]	薛小花, 卢振权, 廖泽文, 等. 祁连山冻土区含天然气水合物层段岩心热模拟实验研究[J]. 现代地质, 2013,27(2):413-424.
[17]	刘斌, 郭福军. 油田经济可采储量确定方法研究[J]. 西南石油大学学报(自然科学版), 1999,21(1):83-87.
[18]	刘卫, 丁亚军, 彭光艳, 等. 基于界面约束法的曲流河点坝内部构型建模[J]. 油气地质与采收率, 2014,21(3):33-35.

基于流场强度评价的点坝砂体特高含水期水平井挖潜技术

Horizontal Well Potential Digging Technology of Point-bar Sandbody in Ultra-high Water Cut Stage: Evaluation of Flow Field Intensity

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