Factors Influencing Productivity of Edge Waterflood in Elongated Anticlinal Reservoirs

doi:10.7657/XJPG20240507

Abstract

Abstract:

The Y reservoir in the JY oilfield is a typical elongated anticlinal structure, where the injected water readily advances along channel centerline, resulting in rapid water-flooding and rapid production decline in producers. Development of such reservoirs is challenging due to unclear factors influencing productivity, such as water body size, structural amplitude, and reservoir physical property. To address these issues, a fine numerical model was established for the elongated anticlinal reservoir, and an “edge waterflood + progressive producer-injector conversion” process was proposed. On this basis, the influences of water body size, structural amplitude, and reservoir physical property on productivity were analyzed. The results indicate that the “edge waterflood + progressive producer-injector conversion” process enhances the edge water energy to allow for bidirectional responses of well patterns, and also delays water breakthrough in producers at the structural high to significantly reduce the water cut of oil well. Furthermore, considering the structural characteristics of the reservoir, the production performance under different factors were quantified, reasonable limits for the parameters such as water body size, structural amplitude, and the ratio of vertical permeability to horizontal permeability were defined, and the adaptability of reservoir area under different reservoir physical properties was demonstrated. The study results provide valuable insights for improving waterflood effects in similar reservoirs.

Key words: elongated anticlinal reservoir, edge waterflood, factor influencing productivity, stabilizing oil production and controlling water cut, producer-injector conversion, numerical simulation

CLC Number:

TE341

XIE Qichao, TIAN Yafei, YUE Ping, SONG Peng, LIU Xinju, LIU Jian, LIU Wantao. Factors Influencing Productivity of Edge Waterflood in Elongated Anticlinal Reservoirs[J]. Xinjiang Petroleum Geology, 2024, 45(5): 560-566.

Figures/Tables 10

Fig. 1.

Fig. 2.

Fig. 3.

Fig. 4.

Fig. 5.

Fig. 6.

Fig. 7.

Fig. 8.

Fig. 9.

Fig. 10.

References 19

[1]	李功, 耿娜, 张宏友, 等. 渤海窄条带状油田水平井产能研究[J]. 科学技术与工程, 2014, 14(25):43-47.
	LI Gong, GENG Na, ZHANG Hongyou, et al. The study on productivity of horizontal well in narrow channel sand reservoir[J]. Science Technology and Engineering, 2014, 14(25):43-47.
[2]	王记俊, 周海燕, 孙强, 等. 窄条带状油藏油井含水上升特征及影响因素[J]. 新疆石油天然气, 2022, 18(3):77-81. doi: 10.12388/j.issn.1673-2677.2022.03.0013
	WANG Jijun, ZHOU Haiyan, SUN Qiang, et al. The characteristics of water cut rise in oil wells of narrow banded reservoirs and their influencing factors[J]. Xinjiang Oil & Gas, 2022, 18(3):77-81.
[3]	齐亚东, 杨正明, 晏军, 等. 特低渗透断块油藏井网优选数值模拟[J]. 新疆石油地质, 2011, 32(4):392-395.
	QI Yadong, YANG Zhengming, YAN Jun, et al. Optimization of well patterns in extra-low permeability fault-block reservoirs by numerical simulation[J]. Xinjiang Petroleum Geology, 2011, 32(4):392-395.
[4]	贾胜彬, 符超, 黄春兰, 等. 窄条带状边水稠油油藏水平井提高开发效果的技术对策[J]. 石油天然气学报, 2014, 36(12):217-219.
	JIA Shengbin, FU Chao, HUANG Chunlan, et al. Technical countermeasures for improving the production effect of horizontal wells in narrow banded and edge water heavy-oil reservoirs[J]. Journal of Oil and Gas Technology, 2014, 36(12):217-219.
[5]	孙强, 石洪福, 王记俊, 等. 窄条带状普通稠油油藏平面波及系数计算方法[J]. 特种油气藏, 2018, 25(6):126-130.
	SUN Qiang, SHI Hongfu, WANG Jijun, et al. A method for calculating the areal sweep efficiency of narrow banded ordinary heavy oil reservoirs[J]. Special Oil & Gas Reservoirs, 2018, 25(6):126-130.
[6]	张杰, 曾诚, 李彦泽, 等. 复杂断块油藏水驱储量控制程度评价新方法[J]. 油气藏评价与开发, 2023, 13(2):200-205.
	ZHANG Jie, ZENG Cheng, LI Yanze, et al. New evaluation method of water flooding reserve control degree in complex fault block reservoirs[J]. Petroleum Reservoir Evaluation and Development, 2023, 13(2):200-205.
[7]	田鸿照. 水平井注采井网和注采参数优化研究[J]. 石油化工应用, 2016, 35(8):6-9.
	TIAN Hongzhao. Optimization of horizontal injection-production well pattern and parameter[J]. Petrochemical Industry Application, 2016, 35(8):6-9.
[8]	戴建文, 李伟, 徐伟, 等. 海相砂岩油藏水驱动态规律及主控因素[J]. 中外能源, 2021, 26(5):33-37.
	DAI Jianwen, LI Wei, XU Wei, et al. Water drive performance and main controlling factors of marine sandstone reservoir[J]. Sino-Global Energy, 2021, 26(5):33-37.
[9]	刘丽娜, 曹飞, 刘学利, 等. 塔河油田块状底水砂岩油藏开发特征及挖潜对策[J]. 新疆石油地质, 2023, 44(4):450-455.
	LIU Lina, CAO Fei, LIU Xueli, et al. Development characteristics and potential tapping strategies of massive sandstone reservoirs with bottom water in Tahe oilfield[J]. Xinjiang Petroleum Geology, 2023, 44(4):450-455.
[10]	张翠萍, 杨博, 卜广平, 等. 胡尖山油田胡154密井网区单河道砂体定量表征[J]. 非常规油气, 2019, 6(2):1-10.
	ZHANG Cuiping, YANG Bo, BU Guangping, et al. Quantitative characterization of single channel sandbody in dense well network area in Hu154 wellblock of Hujianshan oilfield[J]. Unconventional Oil & Gas, 2019, 6(2):1-10.
[11]	李晓军, 杨维, 黄爱先, 等. 辛11水驱断块层间轮转注采水动力学挖潜措施研究[J]. 非常规油气, 2021, 8(2):71-79.
	LI Xiaojun, YANG Wei, HUANG Aixian, et al. Study on hydraulic dynamic potential digging measures of interlayer rotation injection and production in Xin 11 water driving fault block[J]. Unconventional Oil & Gas, 2021, 8(2):71-79.
[12]	岳宝林, 祝晓林, 刘斌, 等. 气顶边水窄油环油藏开采中后期开发方式[J]. 新疆石油地质, 2022, 43(1):102-106.
	YUE Baolin, ZHU Xiaolin, LIU Bin, et al. Mid-late development of reservoirs with narrow oil ring,gas cap and edge water[J]. Xinjiang Petroleum Geology, 2022, 43(1):102-106.
[13]	刘旺东, 杨智刚, 艾尼·买买提, 等. 阿里斯库姆大气顶薄油环边底水油田开发方式[J]. 新疆石油地质, 2018, 39(5):622-626.
	LIU Wangdong, YANG Zhigang, Aini MAIMAITI, et al. Development methods of Aryskum oilfield with large gas cap,thin oil rim and edge/bottom water[J]. Xinjiang Petroleum Geology, 2018, 39(5):622-626.
[14]	刘维霞. 窄屋脊断块油藏人工边水驱筛选标准[J]. 科学技术与工程, 2020, 20(7):2659-2666.
	LIU Weixia. Criteria of artificial edge water flooding in narrow ridge block reservoirs[J]. Science Technology and Engineering, 2020, 20(7):2659-2666.
[15]	龚宁, 李进, 陈娜, 等. 渤海油田水平井出水特征及控水效果评价方法[J]. 特种油气藏, 2019, 26(5):147-152.
	GONG Ning, LI Jin, CHEN Na, et al. Water breakthrough patterns and water control evaluation of horizontal wells in Bohai oilfield[J]. Special Oil & Gas Reservoirs, 2019, 26(5):147-152.
[16]	李进, 龚宁, 徐刚, 等. 渤海油田水平井出水规律特征及影响因素[J]. 断块油气田, 2019, 26(1):80-83.
	LI Jin, GONG Ning, XU Gang, et al. Characteristics of water breakthrough and influence factors of horizontal well in Bohai oilfield[J]. Fault-Block Oil & Gas Field, 2019, 26(1):80-83.
[17]	吴雅丽, 敖文君, 张宁, 等. 渤海B油田边水对注水井调剖调驱效果的影响研究[J]. 非常规油气, 2020, 7(3):55-59.
	WU Yali, AO Wenjun, ZHANG Ning, et al. Study on the influence of side water in Bohai B oilfield on profile control and flooding effects of water injection wells[J]. Unconventional Oil & Gas, 2020, 7(3):55-59.
[18]	张晓明, 黄蒙, 李宽, 等. 铁边城地区侏罗系油藏成藏模式及主控因素[J]. 石油化工应用, 2022, 41(7):81-85.
	ZHANG Xiaoming, HUANG Meng, LI Kuan, et al. Reservoir forming model and main controlling factors of Jurassic reservoir in Tiebiancheng area[J]. Petrochemical Industry Application, 2022, 41(7):81-85.
[19]	徐伟. 薄互层低渗透油藏压裂水平井产能研究[D]. 成都: 西南石油大学, 2017.
	XU Wei. Productivity study for the fractured horizontal wells in thin inter-bedded low permeability reservoir[D]. Chengdu: Southwest Petroleum University, 2017.