流线影响因素分析及其在断块油藏开发调整中的应用

摘要/Abstract

摘要：

断块油藏地质条件复杂,小断层发育,储层非均质严重,开发进入特高含水开发期,剩余油高度分散,注采井间流线固定,水驱效率变差,水驱波及难以进一步扩大。改变流线已成为低油价下断块油藏降本增效的重要手段,常规的动态分析不适应高含水断块油藏的调整。应用流线模拟方法分析了各因素对水驱流线的影响,利用灰色关联法计算了各因素的影响程度。纵向非均质、平面非均质、注采井网对流线的影响显著,注采井距、注采压差等因素对水驱流线的影响相对较小,将流线分布模式分为流线密集区、流线稀疏区、流线空白区,并形成了基于流线的优化调整技术。在苏北盆地多个断块油藏开展了矢量调配、增新水线、抽稀井网、细分重组的调整,取得较好效果,对同类型油藏调整有一定的指导意义。

关键词: 流线, 剩余油分布, 调整优化, 均衡驱替, 细分重组

Abstract:

The geological conditions of fault block reservoirs are complex, whose small faults are developed, and reservoir heterogeneity is serious. When the reservoir enters the development stage with ultra-high water cut, the remaining oil is highly dispersed, the streamline between injection and production wells is fixed, the benefit of water drive becomes worse, and the spread of water flooding is difficult to further expand. Streamline adjustment and development have become the main direction of cost reduction and efficiency enhancement for fault block reservoirs when the price of oil is low. Conventional dynamic analysis is not suitable for the adjustment of high water cut fault block reservoirs. In this paper, streamline simulation method is used to analyze the influence of each factor on the streamline of water flooding, and grey relational method is used to calculate the influence degree of each factor. It is found that vertically heterogeneity, areal heterogeneity and injection-production well pattern have significant influences on streamline, while injection-production well spacing and injection-production pressure difference have relatively small influences. The streamline distribution model is divided into three categories: dense area, sparse area and blank area, on this basis, the optimal adjustment technology is formed. In several fault block reservoirs in Subei Basin, the adjustments of vector allocation, adding new waterline, reducing the number of wells in the well pattern, and reorganization after subdivision have been carried out. Remarkable effect of increasing oil production and efficiency has been achieved. It has certain guiding significance for the adjustment of the same type of reservoirs.

Key words: streamline, remaining oil distribution, optimization, equilibrium flooding, reorganization after subdivision

中图分类号:

TE319

刘家军,金忠康,蔡新明. 流线影响因素分析及其在断块油藏开发调整中的应用[J]. 油气藏评价与开发, 2019, 9(6): 24-29.

LIU Jiajun,JIN Zhongkang,CAI Xinming. Streamline influencing factor analysis and its application of streamline adjustment in fault block oil reservoir[J]. Reservoir Evaluation and Development, 2019, 9(6): 24-29.

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参考文献 23

[1]	王冰, 王焕 . 流线模拟技术在油藏数值模拟中的应用[J]. 内蒙古石油化工, 2012,22(7):80-82.
[2]	MUSKAT M, WYCKOFF R D . A theoretical analysis of water flooding networks[J]. Transactions of the AIME, 1934,107(1):62-76. doi: 10.2166/wst.2018.060 pmid: 29676742
[3]	FAY C H, PRATS M. The application of numerical methods to cycling and flooding problems[C]// paper WPC-4139 presented at the 3rd World Petroleum Congress, 28 May-6 June 1951, the Hague, the Netherlands.
[4]	HIGGINS R V, LEIGHTON A J. Performance of five-spot water floods in stratified reservoirs using streamlines[C]// paper SPE-57-MS presented at the Annual Meeting of Rocky Mountain Petroleum Engineers of AIME, 26-27 May 1961, Farmington, New Mexico.
[5]	POLLOCK D W . Semi-analytical computation of path lines for finite-difference modes[J]. Ground Water, 1988,26(6):743-750. doi: 10.1111/gwat.1988.26.issue-6
[6]	侯建锋, 姜瑞忠, 王海江 , 等. 定量表征单砂体注采关系的流线方法[J]. 油气地质与采收率, 2007,14(3):97-100.
[7]	吴军来, 刘月田, 杨海宁 . 基于3D流线模拟的水驱油藏动态评价新方法[J]. 西安石油大学学报(自然科学版), 2011,26(2):43-47.
[8]	王德龙, 郭平, 汪周华 , 等. 非均质油藏注采井组均衡驱替效果研究[J]. 西南石油大学学报:自然科学版, 2011,33(5):122-125.
[9]	殷建, 林鑫 . 特高含水期井间非均质模式对注水效果的影响[J]. 断块油气田, 2012,20(2):191-194.
[10]	胡国强, 胡书勇, 李勇凯 , 等. 低渗油藏注水开发五点井网有效驱替压力系统研究[J]. 油气藏评价与开发, 2017,7(3):20-22.
[11]	郭军辉 . 水驱多层砂岩油田注采关系定量评价方法研究[J]. 石油天然气学报, 2012,34(7):132-135.
[12]	柏明星, 张志超 . 高含水期砂岩油田优势流场调整研究[J]. 油气藏评价与开发, 2017,7(4):27-30.
[13]	崔传智, 安然, 李凯凯 , 等. 低渗透油藏水驱注采压差优化研究[J]. 特种油气藏, 2016,23(3):83-85.
[14]	张婷 . 基于流线模拟的井组注采关系定量研究[J]. 长江大学学报, 2014,11(20):83-86.
[15]	黄爱先 . 多油层油藏均衡开采影响因素分析[J]. 断块油气田, 2015,22(1):70-73.
[16]	李其正, 王峻峰, 唐海 , 等. 礁灰岩储层微观孔隙结构特征及对生产动态影响[J]. 油气藏评价与开发, 2017,7(6):1-7.
[17]	赵梓平 . 三角形断块油藏剩余油分布规律及综合调整研究——以台兴油田广山区块为例[J]. 油气藏评价与开发, 2016,6(2):29-32.
[18]	冯其红, 王守磊, 白军伟 , 等. 层间非均质油藏提液效果数值模拟[J]. 油气地质与采收率, 2013,20(3):49-52.
[19]	莫建武, 孙卫, 杨希濮 , 等. 严重层间非均质油藏水驱效果及影响因素研究[J]. 西北大学学报(自然科学版), 2011,41(1):113-118.
[20]	赵习, 刘波, 郭荣涛 , 等. 储层表征技术及应用进展[J]. 石油实验地质, 2017,39(2):287-294.
[21]	张建宁, 孔维军, 周均 . 基于灰色关联法的小断块油藏剩余油主控因素研究[J]. 油气藏评价与开发, 2017,7(5):32-37.
[22]	任江丽, 朱玉双, 刘林玉 , 等. 鄂尔多斯盆地南梁西区长4+5 油层组微观渗流特征及影响因素[J]. 石油实验地质, 2017,39(6):805-811.
[23]	卢晨刚, 张遂安, 毛潇潇 , 等. 致密砂岩微观孔隙非均质性定量表征及储层意义:以鄂尔多斯盆地X地区山西组为例[J]. 石油实验地质, 2017,39(4):556-561.