各向异性低渗透油藏菱形反九点井网压裂裂缝优化

doi:10.19657/j.geoscience.1000-8527.2018.03.12

现代地质 ›› 2018, Vol. 32 ›› Issue (03): 547-553.DOI: 10.19657/j.geoscience.1000-8527.2018.03.12

各向异性低渗透油藏菱形反九点井网压裂裂缝优化

王福顺¹(), 刘鹏程¹(), 王文环², 郝明强², 庄永涛³

1.中国地质大学(北京) 能源学院,北京 100083
2.中国石油勘探开发研究院,北京 100083
3.大港油田采油工艺研究院,天津 300280

收稿日期:2017-05-15 修回日期:2017-10-20 出版日期:2018-06-10 发布日期:2023-09-22
通讯作者: 刘鹏程
作者简介:刘鹏程,男,教授,博士生导师,1969年出生,油藏工程专业,现从事油气田开发地质与开发工程等相关方向的研究。Email:lpc@cugb.edu.cn。
王福顺,男,硕士研究生,1993年出生,石油与天然气工程专业,主要研究方向为油气田开发及数值模拟。Email:851158696@qq.com。
基金资助:
国家科技重大专项“稠油、碳酸盐岩和致密油藏开发主体技术与应用潜力”(2016X05016-006);中国石油天然气股份有限公司项目“不同类型特低渗透油藏最佳开采方式研究”(RIPED-2016-JS-150)

Optimization Study of Fracturing Length for Rhombus Inverse Nine-spot Diamond Reverse Well Pattern in Anisotropy Reservoirs

WANG Fushun¹(), LIU Pengcheng¹(), WANG Wenhuan², HAO Mingqiang², ZHUANG Yongtao³

1. School of Energy Resources, China University of Geosciences, Beijing 100083, China
2. Research Institute of Petroleum Exploration and Development, CNPC, Beijing 100083, China
3. Oil Production Technology Institute of Dagang Oilfield, Tianjin 300280,China

Received:2017-05-15 Revised:2017-10-20 Online:2018-06-10 Published:2023-09-22
Contact: LIU Pengcheng

摘要/Abstract

摘要：

在低渗透油藏开发中普遍采用菱形反九点井网,但采油井等缝长压裂将导致非均匀驱替,当油藏物性各向异性时,非均匀驱替现象更加明显。以往针对菱形反九点井网的研究主要基于等缝长压裂,未考虑利用不等缝长设计改善开发效果。根据某各向异性低渗透油藏基本参数建立数值模型,进行不等缝长设计,分析油藏渗透性各向异性及油水井压裂情况对菱形反九点井网水驱效果的影响。随着储层K_x:K_y的增加,角井裂缝优化穿透比减小,而边井裂缝优化穿透比增大。在相等K_x:K_y条件下,注水井是否压裂对角井裂缝优化穿透比影响较小,对边井裂缝优化穿透比影响较大。数值模拟结果表明,在各向异性低渗透油藏中进行不等缝长优化设计,能有效改善菱形反九点井网的开发效果,优化结果对于各向异性低渗透油藏的水力压裂设计以及井网布置具有一定的指导意义。

关键词: 各向异性, 低渗透油藏, 菱形反九点井网, 压裂, 不等缝长

Abstract:

Nine-point diamond reverse well pattern is widely applied in the development of low-permeability reservoirs, and the wells with hydraulic fracturing can significantly improve the oil recovery. The production wells with equal length of fractures, however, may cause non-uniform displacement. The impacts are more serious if the reservoir properties are inhomogeneous. The main focus of previous research is to study the effect of equal length fractured wells regarding to the nine-point diamond reverse well pattern, without the consideration of unequal length fractured wells. Consequently, we established a numerical simulation model based on parameters of a specific low-permeability inhomogeneous reservoir. Nine-point diamond reverse well pattern was used, and unequal fracture lengths were designed for each well. The anisotropic effects of permeability and fracture lengths on the water-flooding efficiency were analyzed in detail. The results indicate that the optimized fracture penetration ratios of corner wells decrease, and those of the edge wells increase with the increasing ratios of permeability in the x and y directions. When the permeability is uniform in the x and y directions, the influence of whether injection well is fractured or not on penetration ratios of corner wells is relatively small, compared to the influence on edge wells. Our results show that the development effect of nine-point diamond reverse well pattern in inhomogeneous low-permeability reservoirs will be boosted significantly by designing unequal length fractures. This has great significance on the design for fracturing of anisotropic low permeability reservoir and well pattern design.

Key words: anisotropy, low permeability reservoir, nine-point diamond reverse well pattern, fracturing, unequal fracture

中图分类号:

TE34

王福顺, 刘鹏程, 王文环, 郝明强, 庄永涛. 各向异性低渗透油藏菱形反九点井网压裂裂缝优化[J]. 现代地质, 2018, 32(03): 547-553.

WANG Fushun, LIU Pengcheng, WANG Wenhuan, HAO Mingqiang, ZHUANG Yongtao. Optimization Study of Fracturing Length for Rhombus Inverse Nine-spot Diamond Reverse Well Pattern in Anisotropy Reservoirs[J]. Geoscience, 2018, 32(03): 547-553.

图/表 6

图1 网格模拟井网和裂缝示意图

Fig.1 Sketch for the location of wells and fractures in simulation model

图2 不同各向异性下注水井压裂对剩余油分布影响图

Fig.2 Plane distribution of remaining oil saturation with injection well fractured at different Kx:Ky

图3 注水井不压裂不同Kx:Ky的采出程度曲线

Fig.3 Relationship between oil recovery and fracture penetration ratio of the edge well at different Kx:Ky with injection well not fractured

表1 注水井不压裂时不同Kx:Ky边、角井优化裂缝配置

Table 1 Optimization of fracture parameters with the injection well not fractured at different Kx:Ky

编号	K_x:K_y	角井裂缝优化穿透比	边井裂缝优化穿透比	生产6年综合含水率/%	采出程度/%
1	1:1	0.83	0.17	26.3	46.9
2	3:1	0.57	0.37	80.7	51.3
3	6:1	0.50	0.50	91.4	53.3
4	10:1	0.43	0.63	94.4	54.6

图4 注水井压裂时不同Kx:Ky的采出程度曲线

Fig.4 Relationship between oil recovery and fracture penetration ratio of the edge well at different Kx:Ky with injection well fractured

表2 注水井压裂条件下不同Kx:Ky边、角井优化裂缝配置

Table 2 Optimization of fracture parameters with the injection well fractured at different Kx:Ky

编号	K_x:K_y	角井裂缝优化穿透比	边井裂缝优化穿透比	生产6年综合含水率%	采出程度/%
1	1:1	0.77	0.43	87.8	52.3
2	3:1	0.63	0.63	94.6	55.8
3	6:1	0.57	0.70	96.5	57.8
4	10:1	0.30	0.90	97.1	59.1

参考文献 22

[1]	张仲宏, 杨正明, 刘先贵, 等. 低渗透油藏储层分级评价方法及应用[J]. 石油学报, 2012, 33(3) : 437-441. DOI
[2]	刘峰. 低渗透各向异性油藏油井产能及合理井网研究[D]. 成都: 西南石油大学, 2014.
[3]	肖勇, 郭建春. 低渗透非均质油藏油井压裂裂缝参数优化研究[J]. 科学技术与工程, 2012, 33(12):9019-9022.
[4]	丁云宏, 陈作, 曾斌, 王欣. 渗透率各向异性的低渗透油藏开发井网研究[J]. 石油学报, 2002, 23(2) : 64-67. DOI
[5]	刘月田. 各向异性油藏注水开发布井理论与方法[J]. 石油勘探与开发, 2005, 32(5):101-104.
[6]	HOLDITCH A, JENNINGS J M, NEUSE S H. The optimization of well spacing and fracture length in low permeability gas reservoirs[J]. SPE 7496, 1978.
[7]	MEEHAN D N, HORNE R N, AZIZ K. Effects of reservoir heterogeneity and fracture length and well spacing[J]. SPE 17606, 1988.
[8]	MEEHAN D N. Optimization of fracture length and well spacing in heterogeneous reservoirs[J]. SPE Production & Facilities, 1995, 10(2):82-88.
[9]	GATENS J M, LEE W J, HOPKINS C W, et al. The effect of permeability anisotropy on the evaluation and design of hydraulic fracture treatments and well performance[J]. SPE 21501, 1991.
[10]	曹仁义, 周焱斌, 熊琪, 等. 低渗透油藏平面波及系数评价及改善潜力[J]. 油气地质与采收率, 2015, 22(1) : 74-77.
[11]	刘鹏程, 李凡华, 杨琨, 等. 新立油田119区块反九点井网超前注水研究[J]. 石油天然气学报(原江汉石油学院学报), 2007, 29(6) : 120-123.
[12]	MAZO E O, MOREN J, SCHIOZER D, et al. Effects of directional permeability anisotropy on sweep efficiency of water injection under fracturing conditions process[P/OL]. 2007-06-10[2014-09-26]. https://www.researchgate.net/publication/25454006_Effects_of_Directional_Permeability_Anisotropy_on_Sweep_Efficient_of_water_Injection_Under_Fracturing_Condition_Process
[13]	LI Kewen. Effect of heterogeneity on production performance in low permeability reservoirs[J]. SPE 143482, 2011.
[14]	何聪鸽, 范子菲, 方思冬, 等. 特低渗透各向异性油藏平面波及系数计算方法[J]. 油气地质与采收率, 2015, 22(3) : 77-83.
[15]	ROSE W. Permeability anisotropy in low permeability formation[J]. SPE 10810, 1982.
[16]	徐庆岩. 长庆特超低渗透油藏不同井型井网优化技术研究[D]. 廊坊: 中国科学院研究生院(渗流流体力学研究所), 2013.
[17]	王文环, 彭缓缓, 李光泉, 等. 长庆特低渗透油藏注水动态裂缝及井网加密调整模式研究[J]. 石油钻探技术, 2015, 43(1) : 106-110.
[18]	周林波, 曲海, 张俊江, 等. 菱形反九点井网不等缝长整体压裂设计[J]. 特种油气藏, 2013, 20(3) : 101-103.
[19]	曹振义, 刘鹏程, 赵广民, 等. 低渗透油藏水平井注CO₂井网优化与影响因素[J]. 现代地质, 2016, 30(2) : 382-387.
[20]	郝宏达, 侯吉瑞, 赵凤兰, 等. 低渗透非均质油藏二氧化碳非混相驱窜逸控制实验[J]. 油气地质与采收率, 2016, 23(3) : 95-100.
[21]	侯晓春, 陆程, 蔡文, 等. 低渗透储层水平井—直井联合布井极限注采井距研究[J]. 现代地质, 2008, 22(1) : 91-96.
[22]	凌宗发, 王丽娟, 李保柱, 等. 水平井含水率上升影响因素[J]. 现代地质, 2008, 22(1) : 86-90.

各向异性低渗透油藏菱形反九点井网压裂裂缝优化

Optimization Study of Fracturing Length for Rhombus Inverse Nine-spot Diamond Reverse Well Pattern in Anisotropy Reservoirs

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

图/表 6

参考文献 22

相关文章 15

编辑推荐

Metrics

本文评价

[1]	胡景宏, 陈琦, 余国义, 吕杨. 致密油藏压裂双水平井参数优化研究[J]. 现代地质, 2021, 35(06): 1880-1890.
[2]	卜淘. 新场气田分段压裂水平井裂缝布局优化[J]. 现代地质, 2019, 33(03): 672-679.
[3]	崔传智, 陈鸿林, 郭迎春, 王倩, 张书凡. 特低渗砂砾岩油藏多段压裂水平井合理注水开发方式[J]. 现代地质, 2018, 32(01): 198-204.
[4]	张万良, 李子颖, 阙足双, 林锦荣. 水力压裂技术对江西相山热液铀矿成因的启示[J]. 现代地质, 2017, 31(03): 521-533.
[5]	徐振华, 刘鹏程, 王文环, 夏静, 郝明强, 彭缓缓. 低渗透油藏菱形反九点井网不等缝长优化研究[J]. 现代地质, 2017, 31(03): 606-613.
[6]	王铭显，范子菲, 罗万静，丁杰，田青，姚敏，卜祥坤. 特低渗油藏多段压裂水平井注水可行性分析[J]. 现代地质, 2016, 30(6): 1361-1369.
[7]	罗婷婷，周立发，焦尊生，白勇，王苏里. 相控随机建模技术在鄂尔多斯盆地低渗透油藏的应用[J]. 现代地质, 2016, 30(3): 655-662.
[8]	曹振义，刘鹏程，赵广民，洪垚，姜凯. 低渗透油藏水平井注CO₂井网优化与影响因素[J]. 现代地质, 2016, 30(2): 382-387.
[9]	袁玉松，周雁，邱登峰，王茜茜. 泥页岩非构造裂缝形成机制及特征[J]. 现代地质, 2016, 30(1): 155-162.
[10]	侯宏冰，陈立，郭晓静，马琳娜. 压裂液在煤层中的运移模拟研究[J]. 现代地质, 2015, 29(2): 331-336.
[11]	操应长，杨田，王艳忠，宋丙慧，郭迎春，孙渡. 济阳坳陷特低渗透油藏地质多因素综合定量分类评价[J]. 现代地质, 2015, 29(1): 119-130.
[12]	尹建，郭建春，赵志红，王杏尊，鲍文辉. 射孔水平井分段压裂破裂点优化方法[J]. 现代地质, 2014, 28(6): 1307-1314.
[13]	苟波，郭建春. 页岩水平井体积压裂设计的一种新方法[J]. 现代地质, 2013, 27(1): 217-221.
[14]	王晓锋 , 唐书恒 , 解慧 , 李忠城 , 黄家会. 沁水盆地南部煤储层水力压裂裂缝发育特征的数值模拟研究[J]. 现代地质, 2012, 26(3): 527-532.
[15]	曾凡辉, 郭建春, 尹建. 井筒与油藏耦合的压裂水平井非稳态产能计算模型[J]. 现代地质, 2011, 25(6): 1159-1166.