Constructing Optimum Injection-Production Well Pattern for Fault-Karst Reservoirs

doi:10.7657/XJPG20210213

Abstract

Abstract:

In order to construct the optimum injection-production well pattern suitable for fracture-cavity and fault-karst carbonate reservoirs, increase the control and producing degree of reserves by waterflooding development, and improve waterflooding efficiency, a typical combined pattern of fractures and cavities was proposed, and a conceptual model was established according to the development and distribution of fracture-cavity reservoir, fracture connectivity and oil and water distribution in Tahe oilfield. Based on the conceptual model, a numerical model that can reflect the fault-karst reservoirs was established by using numerical simulation software. Considering the strong lateral and vertical heterogeneity of the reservoirs, the studies on optimizing the injection-production well pattern for fault-karst reservoirs were carried out, and a well pattern optimization plan was designed, namely “injection and production at different positions on the lateral profile, and injection and production at different depths on the vertical profile”. Finally, the optimal well pattern suitable for the fracture-cavity and fault-karst reservoirs was obtained. The result shows that on the lateral profile, for the belt-shaped fracture-cavity unit which is crushed to a certain width, the best oil production effect can be achieved in the central position if injecting water from both side wings at the same time; for the plate-shaped fracture-cavity unit crushed to a narrow width, a linear well pattern is more effective, and the development effect is better when injection wells are located in the middle of the fault zone than at both ends. Vertically, the model of deep injection and shallow production is more conducive to waterflooding development of the fault-karst reservoirs.

Key words: Tahe oilfield, carbonate rock, fault karst, fracture-cavity combination, injection-production well pattern, numerical simulation

CLC Number:

TE313.4

LI Qing, LI Xiaobo, TAN Tao, SONG Zhengcong, ZHANG Jie, LIU Hongguang. Constructing Optimum Injection-Production Well Pattern for Fault-Karst Reservoirs[J]. Xinjiang Petroleum Geology, 2021, 42(2): 213-217.

Figures/Tables 7

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References 14

[1]	鲁新便, 容元帅, 李小波, 等. 碳酸盐岩缝洞型油藏注采井网构建及开发意义:以塔河油田为例[J]. 石油与天然气, 2017,38(4):658-664.
	LU Xinbian, RONG Yuanshuai, LI Xiaobo, et al. Construction of injection-production well pattern in fractured-vuggy carbonate reservoir and its development significance:a case study from Tahe oilfield in Tarim basin[J]. Oil ＆ Gas Geology, 2017,38(4):658-664.
[2]	彭长水, 高文君, 李正科, 等. 注采井网对水驱采收率的影响[J]. 新疆石油地质, 2000,21(4):315-317.
	PENG Changshui, GAO Wenjun, LI Zhengke, et al. Influence of injection-production well pattern on waterflooding recovery efficiency[J]. Xinjiang Petroleum Geology, 2000,21(4):315-317.
[3]	高树生, 刘华勋, 叶礼友, 等. 致密砂岩气藏井网密度优化与采收率评价新方法[J]. 天然气工业, 2019,39(8):58-65.
	GAO Shusheng, LIU Huaxun, YE Liyou, et al. A new method for well pattern density optimization and recovery factor evaluation of tight sandstone gas reservoirs[J]. Natural Gas Industry, 2019,39(8):58-65.
[4]	刘春枚, 刘刚, 王高文. 水驱油田开发后期井网密度的确定[J]. 新疆石油地质, 2008,29(5):616-618.
	LIU Chunmei, LIU Gang, WANG Gaowen. Ascertainment of well spacing density in production tail by water drive process[J]. Xinjiang Petroleum Geology, 2008,29(5):616-618.
[5]	赵秀娟, 左松林, 吴佳文, 等. 大庆油田特高含水期层系井网重构技术研究与应用[J]. 油气地质与采收率, 2019,26(4):82-87.
	ZHAO Xiujuan, ZUO Songlin, WU Jiawen, et al. Study and application of strata & well pattern reconstruction technique at extra high water cut stage in Daqing oilfield[J]. Petroleum Geology and Recovery Efficiency, 2019,26(4):82-87.
[6]	翟云芳. 渗流力学[M]. 北京: 石油工业出版社, 2010.
	ZHAI Yunfang. Seepage mechanics[M]. Beijing: Petroleum Industry Press, 2010.
[7]	齐与峰. 油田开发总体设计的最优控制法[J]. 石油学报, 1987,8(1):61-70.
	QI Yufeng. Optimal control in overall development design of oil field[J]. Acta Petrolei Sinica, 1987,8(1):61-70.
[8]	郎兆新, 张丽华, 程林松, 等. 水平井与直井联合开采问题:五点面积法井网[J]. 石油大学学报(自然科学版), 1993,17(6):50-55.
	LANG Zhaoxin, ZHANG Lihua, CHENG Linsong, et al. Combined production of vertical and horizontal wells:a 5-spot well pattern[J]. Journal of the University of Petroleum,China, 1993,17(6):50-55.
[9]	李阳. 低渗透油藏矢量井网设计与整体压裂优化研究[J]. 石油大学学报(自然科学版), 2005,29(6):53-56.
	LI Yang. Design of vector well pattern and optimization of integral fracturing in low permeability reservoir[J]. Journal of the University of Petroleum,China, 2005,29(6):53-56.
[10]	陈建波, 张占女, 郑浩, 等. 潜山裂缝型油藏井网模式优化及开发实践:以渤海海域JZ25-1S油藏为例[J]. 中国海上油气, 2015,27(3):66-72.
	CHEN Jianbo, ZHANG Zhannv, ZHENG Hao, et al. Optimization of well pattern for buried hill fractured reservoirs and development practice:a case study of JZ25-1S oilfield in Bohai sea[J]. China Offshore Oil and Gas, 2015,27(3):66-72.
[11]	朱桂良. 塔河油田断溶体油藏气驱井组注气量计算方法[J]. 新疆石油地质, 2020,41(2):248-252.
	ZHU Guiliang. A method to calculate gas injection volume in fault-karst carbonate reservoirs of Tahe oilfield[J]. Xinjiang Petroleum Geology, 2020,41(2):248-252.
[12]	郑晓丽, 安海亭, 王祖君, 等. 哈拉哈塘地区走滑断裂与断溶体油藏特征[J]. 新疆石油地质, 2019,40(4):449-455.
	ZHENG Xiaoli, AN Haiting, WANG Zujun, et al. Characteristics of strike-slip faults and fault-karst carbonate reservoirs in Halahatang area,Tarim basin[J]. Xinjiang Petroleum Geology, 2019,40(4):449-455.
[13]	漆立新. 塔里木盆地下古生界碳酸盐岩大油气田勘探实践与展望[J]. 石油与天然气地质, 2014,35(6):771-779. doi: 10.11743/ogg20140604
	QI Lixin. Exploration practice and prospects of giant carbonate field in the Lower Paleozoic of Tarim basin[J]. Oil ＆ Gas Geology, 2014,35(6):771-779.
[14]	张三, 金强, 赵深圳, 等. 塔河油田海西运动早期奥陶系岩溶地貌[J]. 新疆石油地质, 2020,41(5):527-534.
	ZHANG San, JIN Qiang, ZHAO Shenzhen, et al. Ordovician karst paleogeomorphology during Early Hercynian movement in Tahe oilfield[J]. Xinjiang Petroleum Geology, 2020,41(5):527-534.

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