Key Technology of Volumetric Fracturing in Deep Shale Gas Horizontal Wells in Southern Sichuan

ZENG Bo; WANG Xinghao; HUANG Haoyong; ZHANG Nanqiao; YUE Wenhan; DENG Qi

doi:10.11911/syztjs.2020073

Volume 48 Issue 5

Sep. 2020

Turn off MathJax

Article Contents

Abstract

References

Petroleum Drilling Techniques > 2020 > 48(5): 77-84. > DOI: 10.11911/syztjs.2020073

ZENG Bo, WANG Xinghao, HUANG Haoyong, ZHANG Nanqiao, YUE Wenhan, DENG Qi. Key Technology of Volumetric Fracturing in Deep Shale Gas Horizontal Wells in Southern Sichuan[J]. Petroleum Drilling Techniques, 2020, 48(5): 77-84. DOI: 10.11911/syztjs.2020073

Citation:

PDF (1088 KB)

Key Technology of Volumetric Fracturing in Deep Shale Gas Horizontal Wells in Southern Sichuan

ZENG Bo^{1, 2,},
WANG Xinghao^{1, 2},
HUANG Haoyong^{1, 2},
ZHANG Nanqiao¹,
YUE Wenhan¹,
DENG Qi¹

1.
Shale Gas Research Institute, PetroChina Southwest Oil & Gas Field Company, Chengdu, Sichuan, 610051, China
2.
Sichuan Key Laboratory of Shale Gas Evaluation and Exploitation, Chengdu, Sichuan, 610051, China

More Information

Received Date: August 19, 2019
Revised Date: June 15, 2020
Available Online: July 02, 2020

Graphical Abstract

Abstract

Abstract

There are persistent problems of immature fracturing technology, unreasonable key parameters, and low production of single well after fracturing in deep shale gas horizontal wells in Southern Sichuan. This paper introduces a process for optimizing the fracturing process and key parameters based on laboratory evaluation and numerical simulation by combining the geological engineering characteristics of deep shale reservoirs in Southern Sichuan through comprehensive analysis of fracturing effect of fractured wells. It focuses on improving the complexity of fracture networks, increasing the volume of fracturing stimulation, and maintaining the long-term conductivity of fractures. The key technology of volumetric fracturing for deep shale gas horizontal wells that focuses on“dense stage+short cluster spacing, equal-holesize large hole perforation, sand fracturing with low viscosity slick water at high pumping rate, high strength proppant with small particle size combinations, and large-scale fracturing with high-strength”is formed. After the application of this technology in Well Z3, its production achieved the rate of 21.3×10⁴m³/d, which doubled and even more than that of wells with normal fracturing methods in the same block. In addition, high-yield production was achieved in several gas wells by applying this technology in deep shale gas horizontal wells in Southern Sichuan. This demonstrated that the technology has good adaptability and can be widely used. The successful application of this key technology in Southern Sichuan has laid a foundation for effective development of shale gas resources with depth around 3 500–4 500 m in Southern Sichuan.
- shale gas,
- horizontal well,
- volumetric fracturing,
- complex fracture network,
- fracturing technology,
- southern Sichuan area

FullText(HTML)

References (17)

References

[1]	董大忠,施振生,管全中,等. 四川盆地五峰组—龙马溪组页岩气勘探进展、挑战与前景[J]. 天然气工业, 2018, 38(4): 67–76. doi: 10.3787/j.issn.1000-0976.2018.04.008 DONG Dazhong, SHI Zhensheng, GUAN Quanzhong, et al. Progress, challenges and prospects of shale gas exploration in the Wufeng–Longmaxi reservoirs in the Sichuan Basin[J]. Natural Gas Industry, 2018, 38(4): 67–76. doi: 10.3787/j.issn.1000-0976.2018.04.008
[2]	伍贤柱. 四川盆地威远页岩气藏高效开发关键技术[J]. 石油钻探技术, 2019, 47(4): 1–9. doi: 10.11911/syztjs.2019074 WU Xianzhu. Key technologies in the efficient development of the Weiyuan shale gas reservoir, Sichuan Basin[J]. Petroleum Drilling Techniques, 2019, 47(4): 1–9. doi: 10.11911/syztjs.2019074
[3]	马新华,谢军. 川南地区页岩气勘探开发进展及发展前景[J]. 石油勘探与开发, 2018, 45(1): 161–169. MA Xinhua, XIE Jun. The progress and prospects of shale gas exploration and exploitation in Southern Sichuan Basin, SW China[J]. Petroleum Exploration and Development, 2018, 45(1): 161–169.
[4]	冯国强,赵立强,卞晓冰,等. 深层页岩气水平井多尺度裂缝压裂技术[J]. 石油钻探技术, 2017, 45(6): 77–82. FENG Guoqiang, ZHAO Liqiang, BIAN Xiaobing, et al. Multi-scale hydraulic fracturing of horizontal wells in deep shale gas plays[J]. Petroleum Drilling Techniques, 2017, 45(6): 77–82.
[5]	吴奇,胥云,王腾飞,等. 增产改造理念的重大变革:体积改造技术概论[J]. 天然气工业, 2011, 31(4): 7–12. doi: 10.3787/j.issn.1000-0976.2011.04.002 WU Qi, XU Yun, WANG Tengfei, et al. The revolution of reservoir stimulation: an introduction of volume fracturing[J]. Natural Gas Industry, 2011, 31(4): 7–12. doi: 10.3787/j.issn.1000-0976.2011.04.002
[6]	吴奇,胥云,王晓泉,等. 非常规油气藏体积改造技术:内涵、优化设计与实现[J]. 石油勘探与开发, 2012, 39(3): 352–358. WU Qi, XU Yun, WANG Xiaoquan, et al. Volume fracturing technology of unconventional reservoirs: connotation, optimization design and implementation[J]. Petroleum Exploration and Development, 2012, 39(3): 352–358.
[7]	曾顺鹏,张国强,韩家新,等. 多裂缝应力阴影效应模型及水平井分段压裂优化设计[J]. 天然气工业, 2015, 35(3): 55–59. doi: 10.3787/j.issn.1000-0976.2015.03.008 ZENG Shunpeng, ZHANG Guoqiang, HAN Jiaxin, et al. Model of multi-fracture stress shadow effect and optimization design for staged fracturing of horizontal wells[J]. Natural Gas Industry, 2015, 35(3): 55–59. doi: 10.3787/j.issn.1000-0976.2015.03.008
[8]	NAGEL N, ZHANG F, SANCHEZ-NAGEL M, et al. Stress shadow evaluations for completion design in unconventional plays[R]. SPE 167128, 2013.
[9]	邓燕,尹建,郭建春. 水平井多段压裂应力场计算新模型[J]. 岩土力学, 2015, 36(3): 660–666. DENG Yan, YIN Jian, GUO Jianchun. A new calculation model for stress field due to horizontal well staged fracturing[J]. Rock and Soil Mechanics, 2015, 36(3): 660–666.
[10]	吴奇,胥云,张守良,等. 非常规油气藏体积改造技术核心理论与优化设计关键[J]. 石油学报, 2014, 35(4): 706–714. doi: 10.7623/syxb201404011 WU Qi, XU Yun, ZHANG Shouliang, et al. The core theories and key optimization designs of volume stimulation technology for unconventional reservoirs[J]. Acta Petrolei Sinica, 2014, 35(4): 706–714. doi: 10.7623/syxb201404011
[11]	CADOTTE R J, WHITSETT A, SORRELL M, et al. Modern completion optimization in the Haynesville Shale[J]. SPE 187315, 2017.
[12]	付永强,马发明,曾立新,等. 页岩气藏储层压裂实验评价关键技术[J]. 天然气工业, 2011, 31(4): 51–54. doi: 10.3787/j.issn.1000-0976.2011.04.012 FU Yongqiang, MA Faming, ZENG Lixin, et al. Key techniques of experimental evaluation in the fracturing treatment for shale gas reservoirs[J]. Natural Gas Industry, 2011, 31(4): 51–54. doi: 10.3787/j.issn.1000-0976.2011.04.012
[13]	杨建,付永强,陈鸿飞,等. 页岩储层的岩石力学特性[J]. 天然气工业, 2012, 32(7): 12–14. doi: 10.3787/j.issn.1000-0976.2012.07.003 YANG Jian, FU Yongqiang, CHEN Hongfei, et al. Rock mechanical characteristics of shale reserviors[J]. Natural Gas Industry, 2012, 32(7): 12–14. doi: 10.3787/j.issn.1000-0976.2012.07.003
[14]	李勇明,陈曦宇,赵金洲,等. 射孔孔眼磨蚀对分段压裂裂缝扩展的影响[J]. 天然气工业, 2017, 37(7): 52–59. doi: 10.3787/j.issn.1000-0976.2017.07.008 LI Yongming, CHEN Xiyu, ZHAO Jinzhou, et al. Influence of perforation erosion on multiple growing hydraulic fractures in multi-stage fracturing[J]. Natural Gas Industry, 2017, 37(7): 52–59. doi: 10.3787/j.issn.1000-0976.2017.07.008
[15]	谢军. 关键技术进步促进页岩气产业快速发展:以长宁—威远国家级页岩气示范区为例[J]. 天然气工业, 2017, 37(12): 1–10. doi: 10.3787/j.issn.1000-0976.2017.12.001 XIE Jun. Rapid shale gas development accelerated by the progress in key technologies: a case study of the Changning–Weiyuan National Shale Gas Demonstration Zone[J]. Natural Gas Industry, 2017, 37(12): 1–10. doi: 10.3787/j.issn.1000-0976.2017.12.001
[16]	刘厚彬,孟英峰,李皋,等. 泥页岩水化作用对岩石强度的影响[J]. 钻采工艺, 2010, 33(6): 18–20. LIU Houbin, MENG Yingfeng, LI Gao, et al. Theoretical simulation and experimental evaluation of the effect of hydration on the shale rock strength[J]. Drilling & Production Technology, 2010, 33(6): 18–20.
[17]	陈铭,张士诚,柳明,等. 水力压裂支撑剂嵌入深度计算方法[J]. 石油勘探与开发, 2018, 45(1): 149–156. CHEN Ming, ZHANG Shicheng, LIU Ming, et al. Calculation method of proppant embedment depth in hydraulic fracturing[J]. Petroleum Exploration and Development, 2018, 45(1): 149–156.

[1]	SHU Honglin, LIU Chen, LI Zhiqiang, DUAN Guifu, LAI Jianlin, JIANG Ming. Numerical Simulation of Complex Fracture Propagation in Shallow Shale Gas Fracturing in Zhaotong[J]. Petroleum Drilling Techniques, 2023, 51(6): 77-84. DOI: 10.11911/syztjs.2023095
[2]	ZHANG Lina, REN Jianhua, HU Chunfeng. Three-Dimensional Development Characteristics and Fracture Network Interference of Atmospheric Shale Gas Reservoir[J]. Petroleum Drilling Techniques, 2023, 51(5): 149-155. DOI: 10.11911/syztjs.2023090
[3]	LI Shanshan, SUN Hu, ZHANG Mian, CHI Xiaoming, LIU Huan. Subdivision Cutting Fracturing Technology for Horizontal Shale Oil Wells in the Longdong Area of the Changqing Oilfield[J]. Petroleum Drilling Techniques, 2021, 49(4): 92-98. DOI: 10.11911/syztjs.2021080
[4]	LI Chuanwu, LAN Kai, DU Xiaosong, HAN Mingtian, LIU Chunlin. Difficulties and Countermeasures in Horizontal Well Drilling for Shale Gas in Southern Sichuan[J]. Petroleum Drilling Techniques, 2020, 48(3): 16-21. DOI: 10.11911/syztjs.2020055
[5]	LIU Wei, HE Long, HU Daliang, LI Wensheng, JIAO Shaoqing. Key Technologies for Deep Marine Shale Gas Drilling in Southern Sichuan[J]. Petroleum Drilling Techniques, 2019, 47(6): 9-14. DOI: 10.11911/syztjs.2019118
[6]	HONG Guobin, CHEN Mian, LU Yunhu, JIN Yan. Study on the Anisotropy Characteristics of Deep Shale in the Southern Sichuan Basin and Their Impacts on Fracturing Pressure[J]. Petroleum Drilling Techniques, 2018, 46(3): 78-85. DOI: 10.11911/syztjs.2018022
[7]	GAO Shuyang, DOU Ninghui, LIN Yongxue, CHAI Long, LIU Rui. A New Method for Evaluating the Characteristics of Hydration in the Longmaxi Shale Gas Reservoir in Sichuan-Chongqing Area[J]. Petroleum Drilling Techniques, 2018, 46(3): 20-26. DOI: 10.11911/syztjs.2018089
[8]	Tang Jiagui. Discussion on Shale Gas Horizontal Drilling Technology in Southern Sichuan[J]. Petroleum Drilling Techniques, 2014, 42(5): 47-51. DOI: 10.11911/syztjs.201405008
[9]	Zhou Chengxiang, Zhou Yucang, Li Shuangming, Hu Yuanyuan. Fracturing Pressure Reducing Technique for Shale Gas Well in the Southeastern Sichuan[J]. Petroleum Drilling Techniques, 2014, 42(4): 42-47. DOI: 10.3969/j.issn.1001-0890.2014.04.008
[10]	Cao Yang, Chen Chen, Shi Xuezhi, Xiong Xindong, Qiao Zhiguo. Multi-Stage Fracturing Techniques for Open Hole Horizontal Wells in Western Sichuan Tight Gas Reservoirs[J]. Petroleum Drilling Techniques, 2012, 40(3): 13-17. DOI: 10.3969/j.issn.1001-0890.2012.03.003

Cited By

Get Citation

PDF

XML

Article Metrics

Article views (1328) PDF downloads (200)

Key Technology of Volumetric Fracturing in Deep Shale Gas Horizontal Wells in Southern Sichuan

Abstract

References

Related Articles

Catalog

Article Metrics

Related

Key Technology of Volumetric Fracturing in Deep Shale Gas Horizontal Wells in Southern Sichuan

Abstract

References

Related Articles

Catalog

Article Metrics

Related

Export File

Citation

Format

Content