Study on the Optimization of the Fracturing Perforation Scheme in the Comprehensive Development of Coal-bearing Reservoirs

doi:10.3969/j.issn.1006-6535.2021.01.023

Abstract

Abstract: For the three typical lithological association occurrence patterns of coal-bearing reservoirs in the Linxing-Shenfu Block on the eastern edge of Ordos Basin,the numerical simulation method is applied to analyze the influence of perforation location and perforation degree on the inter-bed and intra-bed fracture propagation and extension,and the fracture bed-crossing propagation capability and fracture extension length are used as evaluation indexes to study the multi-reservoir fracturing perforation scheme for such three modes as the sandstone-coalseam contact zone,the sandstone-coalseam-mudstone interbed,and the coalseam-sandstone-coalseam multiple coalseams,so as to improve the comprehensive utilization efficiency of oil and gas resources in coal reservoirs.The results show that:the interbed interface has a significant negative effect on energy propagation; the perforation ratio of 50%-80% is appropriate for the coalseam-sandstone-coalseam multiple coalseams and the sandstone-coalseam-mudstone interbed type reservoirs; for the sandstone-coalseam contact type reservoirs,the indirect fracturing process is applicable,and the perforation ratio is 70%-75% for the sandstone and 25%-50% for the coalseam.This study can provide a reference for the optimization of the coal-bearing multi-reservoir fracturing perforation.

Key words: coal-bearing reservoir, lithological association, fracturing, perforation, Linxing-Shenfu Block, Ordos Basin

CLC Number:

TE357.2

Zhang Hongjie, Liu Xinjia, Zhang Xiao, Zhang Suian, Shao Bingbing. Study on the Optimization of the Fracturing Perforation Scheme in the Comprehensive Development of Coal-bearing Reservoirs[J]. Special Oil & Gas Reservoirs, 2021, 28(1): 154-160.

References

[1] DONG Zhenzhen,STEPHEN A H,WALTER B A,et al.Probabilistic estimate of global coalbed methane recoverable resources[C].SPE169006-PA,2015:148-156.
[2] 李陈,李亚娇,李剑,等.考虑基质收缩效应的复合煤层气藏产能评价[J].断块油气田,2019,26(1):75-79.
LI Chen,LI Yajiao,LI Jian,et al.Production evaluation of coalbed reservoir with matrix shrinkage effect[J].Fault-Block Oil & Gas Field,2019,26(1):75-79.
[3] 杜世涛,吴斌,马群,等.阜康矿区西部煤层气高产因素追踪[J].断块油气田,2019,26(2):181-186.
DU Shitao,WU Bin,MA Qun,et al.Factors of high-yielding coalbed methane in western Fukang mining area[J].Fault-Block Oil & Gas Field,2019,26(2):181-186.
[4] 唐雨萌,董晓渊,胡铭寰,等.沁南煤系构造应力场模拟及其控气作用[J].断块油气田,2019,26(2):200-204.
TANG Yumeng,DONG Xiaoyuan,HU Minghuan,et al.Simulation of stress field in coal measure in southern Qinshui Basin and its gas control effect[J].Fault-Block Oil & Gas Field,2019,26(2):200-204.
[5] GATENS M.Coalbed methane development:practices and progress in Canada[J].Journal of Canadian Petroleum Technology,2005,44(8):16-21.
[6] 胡海洋,赵凌云,金军,等.黔西煤层应力敏感性及对煤层气井排采的影响[J].断块油气田,2019,26(4):475-479.
HU Haiyang,ZHAO Linyun,JIN Jun,et al.Stress sensitivity of western Guizhou coal reservoir and its influence on drainage of CBM well[J].Fault-Block Oil & Gas Field,2019,26(4):475-479.
[7] ABASS H H,VAN DOMELEN M L,EI RABAA W M.Experim-ental observations of hydraulic fracture propagation through coal blocks[C].SPE21289,1990:239-252.
[8] MORALES R H,STEWART B R,MULLEN M E,et al.Fracturing behavior in soft layered formations[C].SPE30468-MS,1995:1-7.
[9] TAN P,JIN Y,ZHOU Y C,et al.Experimental investigation on non-planar propagation of hydraulic fracture and proppant migration for directional well fracturing in coal seams[C].ARMA-2016-779,2016:1-6.
[10] 吴峙颖,路保平,胡亚斐,等.压裂多级裂缝内动态输砂物理模拟实验研究[J].石油钻探技术,2020,48(4):106-110.
WU Zhiying,LU Baoping,HU Yafei,et al.Experimental study on the physical simulation of dynamic sand transport in multi-stage fractures[J].Petroleum Drilling Techniques,2020,48(4):106-110.
[11] 谭天宇,李浩,李宗源,等.煤层气多分支水平井分支井眼重入筛管完井技术[J].石油钻探技术,2020,48(4):78-82.
TAN Tianyu,LI Hao,LI Zongyuan,et al.Re-entry screen completion technology for multi-lateral boreholes in CBM multi-lateral horizontal wells[J].Petroleum Drilling Techniques,2020,48(4):78-82.
[12] 周加佳.碎软低渗煤层煤层气直井间接压裂技术及应用实践[J].煤田地质与勘探,2019,47(4):6-11.
ZHOU Jiajia.Technology and application of indirect fracturing in CBM vertical well of broken and soft coal seam with low permeability[J].Coal Geology & Exploration,2019,47(4):6-11.
[13] OLSEN T N,BRENIZE G,FRENZEL T.Improvement processes for coalbed natural gas completion and stimulation[C].SPE84122-MS,2003:1-15.
[14] OLSEN T N,BRATTON T R,TANNER K V,et al.Application of indirect fracturing for efficient stimulation of coalbed methane[C].SPE107985-MS,2007:1-10.
[15] 王怡.页岩气藏裂缝区地层孔隙压力准确求取方法[J].石油钻探技术,2020,48(3):29-34.
WANG Yi.A method for accurate calculation of pore pressure in fractured formations of shale gas reservoirs[J].Petroleum Drilling Techniques,2020,48(3):29-34.
[16] 陈作,李双明,陈赞,等.深层页岩气水力裂缝起裂与扩展试验及压裂优化设计[J].石油钻探技术,2020,48(3):70-76.
CHEN Zuo,LI Shuangming,CHEN Zan,et al.Hydraulic fracture initiation and extending tests in deep shale gas formations and fracturing design optimization[J].Petroleum Drilling Techniques,2020,48(3):70-76.
[17] LESHCHYSHYN T T,RIEB B A.Production success of proppant stimulation on horseshoe canyon coal bed methane and sandstone commingled wells[C].SPE96864-MS,2005:1-7.
[18] HOCH O.The dry coal anomaly-the horseshoe canyon formation of Alberta,Canada[C].SPE95872-MS,2005:1-14.
[19] 尹中山,蒋琦,熊建龙,等.川南煤田龙潭组煤系泥页岩气与煤层气组合模式及合采前景分析 [J].中国煤炭地质,2019,31(5):30-35.
YIN Zhongshan,JIANG Qi,XIONG Jianlong,et al.Longtan formation coal measures argillutite gas and CBM association mode and joint exploitation prospect analysis in southern Sichuan Coalfield[J].Coal Geology of China,2019,31(5):30-35.
[20] 郭肖,汪志明,曾泉树.煤层气/砂岩气混合气藏合采产能预测及排采优化[J].科学技术与工程,2019,19(17):162-167.
GUO Xiao,WANG Zhiming,ZENG Quanshu.Production prediction of hybrid gas reservoirs including coal seams and sandstone seams and development optimization[J].Science Technology and Engineering,2019,19(17):162-167.
[21] 李辉,马遵敬,王旭东,等.沁水盆地南部地区砂体与煤层空间叠置特征及其在煤层气和致密气合采开发中的意义[J].科学技术与工程,2019,19(7):70-77.
LI Hui,MA Zunjing,WANG Xudong,et al.Characteristics of spatial superimposition between sandbody and coal seam and it's implications to commingling production for coal-bed methane and tight gas in the southern Qinshui Basin[J].Science Technology and Engineering,2019,19(7):70-77.
[22] 杨建超,李贵红,刘钰辉,等.晋城地区煤层气井多层合采效果评价[J].煤田地质与勘探,2019,47(6):26-31.
YANG Jianchao,LI Guihong,LIU Yuhui,et al.Evaluation of coalbed methane drainage effect for multi-target seams in Jincheng Region[J].Coal Geology & Exploration,2019,47(6):26-31.
[23] 杨兆彪,李洋阳,秦勇,等.煤层气多层合采开发单元划分及有利区评价[J].石油勘探与开发,2019,46(3):1-10.
YANG Zhaobiao,LI Yangyang,QIN Yong,et al.Development unit division and favorable area evaluation for joint mining coalbed methane[J].Petroleum Exploration and Development,2019,46(3):1-10.
[24] FERRER F J.Commingled production wells:experiences in Lake Maracaibo,Venezuela[C].SPE49311-MS,1998:801-808.
[25] 高英.薄互层低渗透油藏压裂开发裂缝扩展规律及产能预测研究[D].北京:北京科技大学,2015.
GAO Ying.Productivity prediction of fractured well and propagation law of hydraulic fractures in thin inter-bedded low permeability reservoirs[D].Beijing:University of Science and Technology Beijing,2015.
[26] SUMAN G O.Perforations - a prime source of well performance problems[C].SPE3445-PA,1972:399-411.
[27] 张广清,陈勉,殷有泉,等.射孔对地层破裂压力的影响研究[J].岩石力学与工程学报,2003,22(1):40-44.
ZHANG Guangqing,CHEN Mian,YIN Youquan,et al.Study on influence of perforation formation fracturing pressure[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(1):40-44.
[28] 雷鑫,张士诚,许国庆,等.射孔对致密砂岩气藏水力压裂裂缝起裂与扩展的影响[J].东北石油大学学报,2015,39(2):94-100.
LEI Xin,ZHNAG Shicheng,XU Guoqing,et al.Impact of perforation on hydraulic fracture initiation and propagation in tight gas reservoir[J].Journal of Northeast Petroleum University,2015,39(2):94-100.
[29] 唐书恒,朱宝存,颜志丰.地应力对煤层气井水力压裂裂缝发育的影响[J].煤炭学报,2011,36(1):65-69.
TANG Shuheng,ZHU Baocun,YAN Zhifeng.Effect of crustal stress on hydraulic fracturing in coalbed methane wells[J].Journal of China Coal Society,2011,36(1):65-69.
[30] 刘合,兰中孝,王素玲,等.水平井定面射孔条件下水力裂缝起裂机理[J].石油勘探与开发,2015,42(6):794-800.
LIU He,LAN Zhongxiao,WANG Suling,et al.Hydraulic fracture initiation mechanism in the definite plane perforating technology of horizontal well[J].Petroleum Exploration and Development,2015,42(6):794-800.
[31] CHERIAN B V,HIGGINS-BORCHARDT S,BORDAKOV G A,et al.The impact of laminated rock on hydraulic fracture propagation in unconventional resources[C].SPE169960-MS,2014:1-10.
[32] 孟尚志,侯冰,张健,等.煤系三气共采产层组压裂裂缝扩展物模实验研究[J].煤炭学报,2016,41(1):221-227.
MENG Shangzhi,HOU Bing,ZHANG Jian,et al.Experimental research on hydraulic fracture propagation through mixed layers of shale,tight sand and coal seam[J].Journal of China Coal Society,2016,41(1):221-227.
[33] PRAMANIK R,PAN K,JONES B D,et al.Numerical simulation of fracture propagation in layered rock[C].ARMA 17-350,2017:1-8.
[34] LIU Songxia,VALKO P P.A rigorous hydraulic-fracture equilibrium-height model for multilayer formations[C].SPE173335-PA,2018:214-234.
[35] 刘欣佳,张遂安,靳建虎,等.煤成(层)气资源综合开发中的合层压裂可行性评价[J].煤炭学报,2018,43(6):1687-1693.
LIU Xinjia,ZHANG Suian,JIN Jianhu,et al.Feasibility evaluation of commingle fracturing in the integrated development of coal-derived gas resources[J].Journal of China Coal Society,2018,43(6):1687-1693.
[36] 赵海峰,陈勉,金衍.水力裂缝在地层界面的扩展行为[J].石油学报,2009,30(3):450-454.
ZHAO Haifeng,CHEN Mian,JIN Yan.Extending behavior of hydraulic fracture on formation interface[J].Acta Petrolei Sinica,2009,30(3):450-454.
[37] 宋晨鹏,卢义玉,贾云中,等.煤岩交界面对水力压裂裂缝扩展的影响[J].东北大学学报(自然科学版),2014,25(9):1340-1345.
SONG Chenpeng,LU Yiyu,JIA Yunzhong,et al.Effect of coal-rock interface on hydraulic fracturing propagation[J].Journal of Northeastern University (Natural Science),2014,25(9):1340-1345.
[38] WU H,CHUDNOVSKY A,DUDLEY J W,et al.A map of fracture behavior in the vicinity of an interface[C].ARMA 04-620,2004:1-9.