前置液阶段的支撑剂段塞降低页岩储层压裂摩阻实验研究

doi:10.13809/j.cnki.cn32-1825/te.2020.01.012

Abstract

Abstract:

In order to solve the problem that the injection pressure of shale reservoir in Fuling area is too high in the early stage of hydraulic fracturing, researches on the resistance reduction based on proppant slug technology was carried out. By using the previous self-developed jet device and target, a set of physical simulation method for reducing fracture resistance in near well by grinding perforation with proppant slug was established and the orthogonal experiment was carried out. For the on-site needs, fore-tail pressure drop and average pressure drop rate are established to characterize the experimental results, and then analyzed accordingly. The results show that the influence of various factors on the resistance reduction effect from large to small is in the following orders: sand ratio, particle size, number of slugs（grinding time） and proppant type. The effect of reducing resistance of quartz sand is better than that of ceramsite. Drag reduction increases with the thickening of proppant particle size and the increase of sand ratio, and decreases at first and then increases with the prolongation of grinding time. Based on the results of orthogonal experiment, the optimal operating parameters of quartz sand with particle size of 40/70 mesh, sand ratio of 9 % and grinding time of 9 min are selected. On this condition, the optimal friction reduction effect of pressure drop rate of 0.439 MPa/min and head-tail pressure drop of 1.04 MPa are obtained. The experimental study provides a certain reference for the construction design of hydraulic fracturing of shale reservoir.

Key words: shale, perforation, friction reduction, tortuous fracture, proppant slug, hydraulic fracturing

CLC Number:

TE357

Zhaozhong YANG,Chenxuan GAO,Xiaogang LI, et al. Laboratory study on reducing fracturing friction of shale reservoir by proppant slug during pad[J]. Reservoir Evaluation and Development, 2020, 10(1): 77-83.

Figures/Tables 13

Fig. 1

Fig. 2

Fig. 3

Table 1

Table 2

Fig. 4

Fig. 5

Fig. 6

Fig. 7

Table 3

Table 4

Fig. 8

Fig. 9

References 17

[1]	CRUMP J B, CONWAY M W . Effects of perforation-entry friction on bottomhole treating analysis[J]. Journal of Petroleum Technology, 1988,40(8):1041-1048.
[2]	LORD D L. Study of perforation friction pressure employing a large-scale fracturing flow simulator[C]// paper SPE-28508-MS presented at the SPE Annual Technical Conference and Exhibition, 25-28 September 1994, New Orleans, Louisiana, USA.
[3]	陈志雄 . 斜井压裂砂堵原因分析及解决办法[J]. 油气井测试, 2003,12(3):36-37.
	CHEN Z X . The sand slug analysis and resolving method during fracturing in slant well[J]. Well Testing, 2003,12(3):36-37.
[4]	SMITH C G, KHIAT S, AL-BADRAOUI D. An effective technique to reduce bottomhole friction pressure during hydraulic fracturing treatments[C]// paper SPE-112422-MS presented at the SPE International Symposium and Exhibition on Formation Damage Control, 13-15 February 2008, Lafayette, Louisiana, USA.
[5]	郭大立, 计勇, 许江文 , 等. 分析近井筒效应的新模型及方法[J]. 西南石油大学学报(自然科学版), 2012,34(5):177-182.
	GUO D L, JI Y, XU J W , et al. Research on the new model and method of analyzing near-wellbore effects[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2012,34(5):177-182.
[6]	龚迪光, 曲占庆, 郭天魁 , 等. 径向井水力压裂摩阻影响因素与计算公式[J]. 钻井液与完井液, 2016,33(3):102-106.
	GONG D G, QU Z Q, GUO T K , et al. Factors affecting friction loss of hydraulic fracturing in ultra-short radius radial wells and the calculating equation thereof[J]. Drilling Fluid & Completion Fluid, 2016,33(3):102-106.
[7]	LONG G B, LIU S X, XU G S , et al. A perforation-erosion model for hydraulic-fracturing applications[J]. SPE Production & Operations, 2018 , 33(4):770-783.
[8]	幸雪松, 陈彬, 张彬奇 , 等. 渤海套管井多层压裂充填管柱沿程摩阻修正与应用[J]. 钻采工艺, 2019,42(5):49-51.
	XING X S, CHEN B, ZHANG B Q , et al. Friction drag correction for multi fracturing-gravel packing string used in cased holes at Bohai[J]. Drilling & Production Technology, 2019,42(5):49-51.
[9]	周仲建, 于世虎, 张晓虎 . 页岩气用复合增效压裂液的研究与应用[J]. 钻采工艺, 2019,42(4):89-92.
	ZHOU Z J, YU S H, ZHANG X H . R & D of composite synergistic fracturing fluid for shale gas and application[J]. Drilling & Production Technology, 2019,42(4):89-92.
[10]	梁兵, 郭建春, 党勇杰 , 等. 水力压裂过程中近井摩阻分析[J]. 石油地质与工程, 2006,20(1):74-75.
	LIANG B, GUO J C, DANG Y J , et al. An analysis of entry friction during hydraulic fracturing[J]. Henan Petroleum, 2006,20(1):74-78.
[11]	宋燕高, 赵素惠, 王兴文 , 等. 深层气藏压裂改造降低施工摩阻技术[J]. 特种油气藏, 2012,19(2):123-125.
	SONG Y G, ZHAO S H, WANG X W , et al. Friction resistance reduction technology for fracturing deep gas reservoirs[J]. Special Oil & Gas Reservoirs, 2012,19(2):123-125.
[12]	刘炜, 刘觐瑄, 华继军 , 等. 水力压裂摩阻类型及降阻措施[J]. 石化技术, 2019,26(1):69.
	LIU W, LIU J X, HUA J J , et al. Friction types of hydraulic fracturing and measures for reducing friction[J]. Petrochemical Industry Technology, 2019,26(1):69.
[13]	彭鹏 . 煤层气水平井水力喷射工艺的室内研究[D]. 成都:西南石油大学, 2016.
	PENG P . Laboratory study on horizontal well hydraulic spraying technology of coalbed methane[D]. Chengdu: Southwest Petroleum University, 2016
[14]	张建涛, 陈小新, 潘卫东 , 等. 水力压裂中近井筒效应分析及支撑剂段塞技术在中原油田的应用[J]. 钻采工艺, 2004,27(5):37-39.
	ZHANG J T, CHEN X X, PAN W D , et al. Near-wellbore effects analysis in hydraulic fracturing and applications of proppant slugs technique in Zhongyuan Oilfield[J]. Drilling & Production Technology, 2004,27(5):37-39.
[15]	师斌斌, 薛政, 马晓云 , 等. 页岩气水平井体积压裂技术研究进展及展望[J]. 中外能源, 2017,22(6):41-49.
	SHI B B, XUE Z, MA X Y , et al. Review and preview of stimulated reservoir volume technology of horizontal wells for shale gas[J]. Sino-Global Energy, 2017,22(6):41-49.
[16]	李根生 . 水力喷射压裂理论与应用[M]. 北京: 科学出版社, 2011.
	LI G S. Theory and application of hydrajet-fracturing[M]. Beijing: Science Press, 2011.
[17]	张永利, 于鸿椿, 何翔 . 磨料两相射流理论及在油井增产中的应用[M]. 沈阳: 东北大学出版社, 2010.
	ZHANG Y L, YU H C, HE X. Abrasive two-phase jet theory and its application in oil well stimulation[M]. Shenyang: Northeastern University Press, 2010.

水平	因素
水平	支撑剂类型	粒径/目	砂比/%	打磨时间/min
1	石英砂	70/140	3	3
2	陶粒	80/120	6	6
3		40/70	9	9

组别	支撑剂类型	粒径/目	砂比/%	打磨时间/min
实验1	石英砂	70/140	3	3
实验2	石英砂	80/120	6	6
实验3	石英砂	40/70	9	9
实验4	陶粒	70/140	6	9
实验5	陶粒	80/120	9	3
实验6	陶粒	40/70	3	6
实验7	石英砂	70/140	9	6
实验8	石英砂	80/120	3	9
实验9	石英砂	40/70	6	3

组别	压降速率/（MPa·min^-1）	首尾压降/MPa
实验1	0	0
实验2	0.125	0.48
实验3	0.439	1.04
实验4	0.096	0.54
实验5	0.209	0.67
实验6	0.034	0.31
实验7	0.168	0.46
实验8	0.044	0.33
实验9	0.193	0.77

表征参数	压降速率/（MPa·min^-1）				首尾压降/MPa
表征参数	均值1	均值2	均值3	极差	均值1	均值2	均值3	极差
支撑剂	0.162	0.113		0.049	0.513	0.507		0.006
粒径	0.088	0.126	0.222	0.134	0.333	0.493	0.707	0.374
砂比	0.026	0.138	0.272	0.246	0.213	0.597	0.723	0.510
时间	0.134	0.109	0.193	0.084	0.480	0.417	0.637	0.220

Laboratory study on reducing fracturing friction of shale reservoir by proppant slug during pad

RichHTML

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 13

References 17

Related Articles 15

Metrics

Comments

Recommended 0

[1]	YU Wenduan, GAO Yuqiao, ZAN Ling, MA Xiaodong, YU Qilin, LI Zhipeng, ZHANG Zhihuan. Distribution of oil bearing and shale oil-rich strata in the second member of Funing Formation in Qintong Sag [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(5): 688-698.
[2]	WANG Xinqian, YU Wenduan, MA Xiaodong, ZHOU Tao, TAI Hao, CUI Qinyu, DENG Kong, LU Yongchao, LIU Zhanhong. Identification and application of shale lithofacies based on conventional logging curves: A case study of the second member of Funing Formation in Qintong Sag, Subei Basin [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(5): 699-706.
[3]	ZHANG Fei, LI Qiuzheng, JIANG Aming, DENG Ci. Application of shale oil 2D NMR logging evaluation in Huazhuang area of Gaoyou Sag [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(5): 707-713.
[4]	CAO Xiaopeng, LIU Haicheng, LI Zhongxin, CHEN Xianchao, JIANG Pengyu, FAN Hao. Optimization of huff-n-puff in shale oil horizontal wells based on EDFM [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(5): 734-740.
[5]	LIAO Kai, ZHANG Shicheng, XIE Bobo. Simulation of reasonable shut-in time for shale oil after volume fracturing [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(5): 749-755.
[6]	LIU Xugang, LI Guofeng, LI Lei, WANG Ruixia, FANG Yanming. Imbibition displacement mechanism of fracturing fluid in shale oil reservoir [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(5): 756-763.
[7]	LIU Wei, CAO Xiaopeng, HU Huifang, CHENG Ziyan, BU Yahui. Production influencing factors analysis and fracturing parameters optimization of shale oil horizontal wells [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(5): 764-770.
[8]	WANG Weiheng, GUO Xin, ZHANG Bin, XIA Weiwei. Development and performance evaluation of fracturing-displacement agent（HDFD） for shale oil: A case study of the second member of Funing Formation, Subei Basin [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(5): 771-778.
[9]	WANG Jiawei, ZHANG Bohu, HU Yao, HE Zhengyi, HU Xinxin, CHEN Wei, LUO Chao. Inversion of multiphase tectonic stress field and fracture evolution in shale gas reservoirs [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(4): 560-568.
[10]	YANG Zhaozhong, YUAN Jianfeng, ZHANG Jingqiang, LI Xiaogang, ZHU Jingyi, HE Jiangang. Research progress and understanding of fracturing fractures in horizontal wells of marine shale in Sichuan Basin [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(4): 600-609.
[11]	LU Cong, LI Qiuyue, GUO Jianchun. Research progress of distributed optical fiber sensing technology in hydraulic fracturing [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(4): 618-628.
[12]	LI Xuebin,JIN Lixin,CHEN Chaofeng,YU Tianxi,XIANG Yingjie,YI Duo. Key technologies of horizontal well fracturing for deep coal-rock gas: A case study of Jurassic in Baijiahai area, Junggar Basin [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(4): 629-637.
[13]	DUAN Hongliang,SHEN Tingshan,SUN Jing,HONG Yafei,LI Sichen,LU Xianrong,ZHANG Zhengyang. Experimental study of oil matrix and fracture flow capacity of shale oil in Subei Basin [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(3): 333-342.
[14]	TANG Yong,CHEN Kun,HU Xiaohu,FANG Sidong,LIU Hua. Phase behavior and development characteristics of shale condensate gas in confined space [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(3): 343-351.
[15]	ZHAO Haifeng, WANG Tengfei, LI Zhongbai, LIANG Wei, ZHANG Tao. Study on dynamic stress field for fracturing in horizontal well group of shale oil [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(3): 352-363.