Inter-Fracture and Inter-Section Interference Modeling for Staged and Clustered Fracturing Stimulation in Horizontal Wells: A Case Study on Reservoirs of Badaowan Formation in Wellblock Ji 7 in Changji Oilfield

doi:10.7657/XJPG20210406

Abstract

Abstract:

In developing the reservoir of the Badaowan formation in Wellblock Ji 7 in Changji oilfield, the results of hydraulic fracturing stimulation in vertical wells are unsatisfactory, and the post-fracturing productivity is limited, so that it is necessary to apply multi-stage fracturing stimulation in horizontal wells. According to the geomechanical characteristics of the reservoir in the Badaowan formation in Wellblock Ji 7, a non-planar artificial fracture propagation model was established using the extended finite element method. By taking into account inter-fracture interference while multiple clusters of fracture propagating simultaneously and the inter-section interference during staged fracturing stimulation, the model characterizes the non-planar fracture propagation in horizontal wells drilled in the Badaowan formation in Wellblock Ji 7. The results show that the inter-fracture interference induced in a section inhibits the half-length of middle fracture clusters, but makes a wider and longer half-length of the fractures on both sides; the inter-fracture interference and the inter-cluster interference make fracture propagation non-planar, and show a certain curvature in geometrical morphology. According to comparative analysis of fracturing data and microseismic data, the modeling results are consistent with the measured data, proving that good application results have been obtained in target zones. A multi-stage fracturing test was carried out in the Badaowan formation in a horizontal well in Wellblock Ji 7. The daily post-fracturing oil production of the horizontal well was 7.8 times that of a vertical well in the same well block, indicating a significant development effect.

Key words: Changji oilfield, Badaowan formation, horizontal well, staged and clustered fracturing stimulation, hydraulic fracture, numerical simulation, geomechanical characteristic, inter-fracture interference, inter-section interference

CLC Number:

TE357

CHENG Ning, GUO Xuyang, WEI Pu, HUANG Lei, WANG Liang. Inter-Fracture and Inter-Section Interference Modeling for Staged and Clustered Fracturing Stimulation in Horizontal Wells: A Case Study on Reservoirs of Badaowan Formation in Wellblock Ji 7 in Changji Oilfield[J]. Xinjiang Petroleum Geology, 2021, 42(4): 437-443.

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References 21

[1]	HOU Bing, CHANG Zhi, FU Weineng, et al. Fracture initiation and propagation in a deep shale gas reservoir subject to an alternating-fluid-injection hydraulic-fracturing treatment[J]. SPE Journal, 2019, 24(4):1 839-1 855. doi: 10.2118/195571-PA
[2]	郭印同, 杨春和, 贾长贵, 等. 页岩水力压裂物理模拟与裂缝表征方法研究[J]. 岩石力学与工程学报, 2014, 33(1):52-59.
	GUO Yintong, YANG Chunhe, JIA Changgui, et al. Shale and fracture characterization methods research on hydraulic fracturing physical simulation[J]. Chinese Journal of Rock Mechanics and Engineering, 2014, 33(1):52-59.
[3]	胥云, 陈铭, 吴奇, 等. 水平井体积改造应力干扰计算模型及其应用[J]. 石油勘探与开发, 2016, 43(5):780-786.
	XU Yun, CHEN Ming, WU Qi, et al. Stress interference calculation model and its application in volume stimulation of horizontal wells[J]. Petroleum Exploration and Development, 2016, 43(5):780-786.
[4]	庄茁, 柳占立, 王永亮. 页岩油气高效开发中的基础理论与关键力学问题[J]. 力学季刊, 2015, 36(1):11-25.
	ZHUANG Zhuo, LIU Zhanli, WANG Yongliang. Fundamental theory and key mechanical problems of shale oil gas effective extraction[J]. Chinese Quarterly of Mechanics, 2015, 36(1):11-25.
[5]	熊廷松, 张成娟, 赵恩东, 等. 英西地区复杂应力条件下油藏体积压裂可行性[J]. 新疆石油地质, 2019, 40(5):579-582.
	XIONG Tingsong, ZHANG Chengjuan, ZHAO Endong, et al. Feasibility study of reservoir volume fracturing in complex geostress state in Yingxi area[J]. Xinjiang Petroleum Geology, 2019, 40(5):579-582.
[6]	王天驹, 陈赞, 王蕊, 等. 致密砂岩油藏体积压裂簇间距优化新方法[J]. 新疆石油地质, 2019, 40(3):351-356.
	WANG Tianju, CHEN Zan, WANG Rui, et al. A new method for cluster spacing optimization during volumetric fracturing in tight sandstone oil reservoirs[J]. Xinjiang Petroleum Geology, 2019, 40(3):351-356.
[7]	曾庆磊, 庄茁, 柳占立, 等. 页岩水力压裂中多簇裂缝扩展的全耦合模拟[J]. 计算力学学报, 2016, 33(4):643-648.
	ZENG Qinglei, ZHUANG Zhuo, LIU Zhanli, et al. Fully coupled modeling for multiple clusters growth of hydraulic fractures in shale[J]. Chinese Journal of Computational Mechanics, 2016, 33(4):643-648.
[8]	陈军斌, 魏波, 谢青, 等. 基于扩展有限元的页岩水平井多裂缝模拟研究[J]. 应用数学和力学, 2016, 37(1):73-83.
	CHEN Junbin, WEI Bo, XIE Qing, et al. Simulation of multi-hydrofracture horizontal wells in shale based on the extended finite element method[J]. Applied Mathematics and Mechanics, 2016, 37(1):73-83.
[9]	李勇明, 许文俊, 赵金洲, 等. 页岩储层中水力裂缝穿过天然裂缝的判定准则[J]. 天然气工业, 2015, 35(7):49-54.
	LI Yongming, XU Wenjun, ZHAO Jinzhou, et al. Criteria for judging whether hydraulic fractures cross natural fractures in shale reservoirs[J]. Natural Gas Industry, 2015, 35(7):49-54.
[10]	CHENG Wan, WANG Rongjing. Modeling of hydraulic fracturing in a complex-fracture-network reservoir with DDM and Graph theory[J]. Journal of Natural Gas Science & Engineering, 2017, 47:73-82.
[11]	卢运虎, 陈勉, 安生. 页岩气井脆性页岩井壁裂缝扩展机理[J]. 石油钻探技术, 2012, 40(4):13-16.
	LU Yunhu, CHEN Mian, AN Sheng. Brittle shale wellbore fracture propagation mechanism[J]. Petroleum Drilling Techniques, 2012, 40(4):13-16.
[12]	CIPOLLA C L, FITZPATRICK T, WILLIAMS M J, et al. Seismic-to-simulation for unconventional reservoir development [R]. SPE 146876-MS, 2011.
[13]	贾利春, 陈勉, 金衍. 国外页岩气井水力压裂裂缝监测技术进展[J]. 天然气与石油, 2012, 30(1):44-47.
	JIA Lichun, CHEN Mian, JIN Yan. Monitoring technology progress of hydraulic fractures in shale gas wells abroad[J]. Natural Gas and Oil, 2012, 30(1):44-47.
[14]	WEBSTER P, COX B, MOLENAAR M. Developments in diagnostic tools for hydraulic fracture geometry analysis[R]. Unconventional Resources Technology Conference,1619968-MS, 2013.
[15]	李雪, 赵志红, 荣军委. 水力压裂裂缝微地震监测测试技术与应用[J]. 油气井测试, 2012, 21(3):43-45.
	LI Xue, ZHAO Zhihong, RONG Junwei. Hydraulic fracture microseismic monitoring technology and its application[J]. Well Testing, 2012, 21(3):43-45.
[16]	王树军, 张坚平, 陈钢, 等. 水力压裂裂缝监测技术[J]. 吐哈油气, 2010, 15(3):57-60.
	WANG Shujun, ZHANG Jianping, CHEN Gang, et al. Hydraulic fracture monitoring technology[J]. Tuha Oil & Gas, 2010, 15(3):57-60.
[17]	GUO Xuyang, WU Kan, AN Cheng, et al. Numerical investigation of effects of subsequent parent-well injection on interwell fracturing interference using reservoir-geomechanics-fracturing modeling[J]. SPE Journal, 2019, 24(4):1 884-1 902. doi: 10.2118/195580-PA
[18]	郭旭洋, 金衍, 林伯韬. 页岩油立体开发诱发的储层地应力动态响应特征[J]. 石油钻采工艺, 2020, 42(6):738-744.
	GUO Xuyang, JIN Yan, LIN Botao. A study of in-situ stress evolution induced by three-dimensional development of shale oil reservoirs[J]. Oil Drilling & Production Technology, 2020, 42(6):738-744.
[19]	程万, 蒋国盛, 周治东, 等. 水平井中多条裂缝同步扩展时裂缝竞争机制[J]. 岩土力学, 2018, 39(12):4 448-4 456.
	CHENG Wan, JIANG Guosheng, ZHOU Zhidong, et al. Fracture competition of simultaneous propagation of multiple hydraulic fractures in a horizontal well[J]. Rock and Soil Mechanics, 2018, 39(12):4 448-4 456.
[20]	HUYNH D B P, BELYTSCHKO T. The extended finite element method for fracture in composite materials[J]. International Journal for Numerical Methods in Engineering, 2009, 77(2):214-239. doi: 10.1002/nme.v77:2
[21]	王涛, 高岳, 柳占立, 等. 基于扩展有限元法的水力压裂大物模实验的数值模拟[J]. 清华大学学报(自然科学版), 2014, 54(10):1 304-1 309.
	WANG Tao, GAO Yue, LIU Zhanli, et al. Numerical simulations of hydraulic fracturing in large objects using an extended finite element method[J]. Journal of Tsinghua University (Science and Technology), 2014, 54(10):1 304-1 309.