川中秋林地区致密砂岩水平井多簇射孔优化设计方法及应用效果

doi:10.13809/j.cnki.cn32-1825/te.2022.02.009

摘要/Abstract

摘要：

针对川中秋林地区致密砂岩储层天然裂缝欠发育,低孔、低渗且空间非均质性强的问题,通过室内物模实验确立了“段内多簇+高强度加砂+造长缝”的改造理念,在此基础上构建基于有效应力理论的井周应力场计算模型,并结合水平井渗流—应力耦合裂缝延伸模型,明确了簇间距对裂缝竞争扩展及缝间渗流干扰的影响机制,形成了考虑应力干扰及渗流阴影的河道砂体非均匀布缝方法,确定了秋林地区致密砂岩水平井段内多簇射孔最优簇间距为7~12 m,使射孔簇开启率高达92.3 %以上,有效提高了致密气储层改造效果。

关键词: 水力压裂, 致密砂岩, 水平井, 多簇射孔, 渗流—应力耦合

Abstract:

In order to solve the problems that the natural cracks of the dense sandstone reservoir in Sichuan region is undeveloped with low hole, low permeability and strong spatial heterogeneity, the transformation idea of “segment clusters created + sand + high strength long slot” is established by the indoor model experiments. On this basis, a calculation model of stress field around the wells based on the effective stress theory is established. Meanwhile, the above model is combined with the flow-stress coupling fracture extension model for horizontal wells to clarify the influence mechanism of cluster spacing on the crack competition expansion and interseam seepage interference. Therefore, the non-uniform arrangement method of cracks in the sand body of river channel considering stress interference and seepage shadow is formed. It is concluded that the optimal spacing of multiple clusters in the horizontal well section of dense sandstone in Qiulin is seven to twelve meters, which can make the opening rate of the injection cluster up to 92.3 %. This method effectively improves the effect of the transformation of the tight gas reservoirs.

Key words: hydraulic fracturing, tight sandstone, horizontal well, multi cluster perforation, seepage stress coupling

中图分类号:

TE122

唐波涛,曾冀,陈伟华,陈一鑫,王涛,刘成,冯逢. 川中秋林地区致密砂岩水平井多簇射孔优化设计方法及应用效果[J]. 油气藏评价与开发, 2022, 12(2): 337-344.

TANG Botao,ZENG Ji,CHEN Weihua,CHEN Yixin,WANG Tao,LIU Cheng,FENG Feng. Multi cluster perforation optimization design method and its application effect of tight sandstone horizontal wells in Qiulin area, central Sichuan[J]. Reservoir Evaluation and Development, 2022, 12(2): 337-344.

图/表 12

图1

图2

图3

图4

图5

图6

图7

图8

图9

图10

图11

图12

参考文献 19

[1]	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.
	ZENG Shunpeng, ZHANG Guoqiang, HAN Jiaxin, et al. 2015. 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.
[2]	刘元爽, 罗天雨, 韩晓强. 体积压裂复杂裂缝开启力学条件研究[J]. 中外能源, 2015, 20(12):34-37.
	LIU Yuanshuang, LUO Tianyu, HAN Xiaoqiang. Research on the opening mechanics condition of complex fracture in simulated reservoir volume fracturing[J]. Sino-Global Energy, 2015, 20(12):34-37.
[3]	刘云平, 席道瑛, 张程远, 等. 循环应力作用下大理岩砂岩的动态响应[J]. 岩石力学与工程学报, 2001, 20(2):216-219.
	LIU Yunpin, XI Daoyin, ZHANG Chengyuan, et al. Dynamic response of marble and sandstone under rotational stress[J]. Chinese Journal of Rock Mechanics and Engineering, 2001, 20(2):216-219.
[4]	马旭, 郝瑞芬, 来轩昂, 等. 苏里格气田致密砂岩气藏水平井体积压裂矿场试验[J]. 石油勘探与开发, 2014, 41(6):742-747.
	MA Xu, HAO Ruifen, LAI Xuanang, et al. Field test of volume fracturing for horizontal wells in Sulige tight sandstone gas reservoirs[J]. Petroleum Exploration and Development, 2014, 41(6):742-747.
[5]	邵尚奇, 田守嶒, 李根生, 等. 泥页岩地层水力裂缝延伸方位研究[J]. 石油钻探技术, 2014, 42(3):27-31.
	SHAO Shangqi, TIAN Shouzeng, LI Genshen, et al. Propagating orientation of hydraulic fractures in muddy shale formation[J]. Petroleum Drilling Techniques 2014, 42(3):27-31.
[6]	徐新丽. 含微裂缝低渗储层应力敏感性及其对产能影响[J]. 特种油气藏, 2015, 22(1):127-130.
	XU Xinli. Stress sensitivity of low-permeability reservoirs containing micro- fractures and its influence on productivity[J]. Special Oil and Gas Reservoirs, 2015, 22(1):127-130.
[7]	李红, 李世愚, 许征宇, 等. 高位压下岩石材料的断裂力学实验[J]. 地震学报, 1992, 14(1):124-127.
	LI Hong, LI Shiyu, XU Zhengyu, et al. Fracture mechanics experiment of rock material under high confining pressure[J]. Acta Seismologica Sinica, 1992, 14 (1):124-127.
[8]	AREIAS P M A, BELYTSCHKO T. Analysis of three-dimensional crack initiation and propagation using the extended finite element method[J]. International Journal for Numerical Methods in Engineering, 2005, 63(5):760-788. doi: 10.1002/nme.1305
[9]	漆国权, 孙雷, 陶章文, 等. 致密气藏水平井分段压裂缝参数优化[J]. 油气藏评价与开发, 2015, 5(2):45-48.
	QI Guoquan, SUN Lei, TAO Zhangwen, et al. Optimization of fracture parameters for multiple-fractured horizontal well in tight gas reservoir[J]. Petroleum Reservoir Evaluation and Development, 2015, 5(2):45-48.
[10]	宋丽阳, 王纪伟, 李凤霞, 等. 致密储层水平井重复压裂技术优化[J]. 油气藏评价与开发, 2018, 8(4):63-67.
	SONG Liyang, WANG Jiwei, LI Fengxia, et al. Optimization of horizontal well refracturing technology in tight reservoirs[J]. Petroleum Reservoir Evaluation and Development, 2018, 8(4): 63-67.
[11]	张守江, 郑恒, 穆景福, 等. 致密气藏水平井水力压裂簇间距优化研究[J]. 油气井测试, 2017, 26(3):5-9.
	ZHANG Shoujiang, ZHENG Heng, MU Jingfu, et al. Study on optimization of hydraulic fracturing cluster spacing to horizontal well in dense gas reservoir[J]. Well Testing, 2017, 26(3):5-9.
[12]	吴百烈, 周建良, 曹砚锋, 等. 致密气水平井分段多簇压裂关键参数优选[J]. 特种油气藏, 2016, 23(4):127-130.
	WU Bailie, ZHOU Jianliang, CAO Xianfeng, et al. Key parameter optimization of horizontal well multi-cluster fracturing in tight gas reservoir[J]. Special Oil and Gas Reservoirs, 2016, 23(4):127-130.
[13]	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):252-258.
	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):252-258.
[14]	赵金洲, 陈曦宇, 李勇明, 等. 水平井分段多簇压裂模拟分析及射孔优化[J]. 石油勘探与开发, 2017, 44(1):117-124.
	ZHAO Jinzhou, CHEN Xiyu, LI Yongming, et al. Numerical simulation of multi-stage fracturing and optimization of perforation in a horizontal well[J]. Petroleum Exploration and Development, 2017, 44(1):117-124.
[15]	李士斌, 官兵, 张立刚, 等. 裂缝诱导应力场影响因素敏感性评价[J]. 油气藏评价与开发, 2017, 7(2):23-30.
	LI Shibin, GUAN Bing, ZHANG Ligang, et al. The sensitivity evaluation on influence factors of fractures induced stress field[J]. Reservoir Evaluation and Development, 2017, 7(2): 23-30.
[16]	胡艾国. 水平井多簇起裂影响因素分析及控制起裂方法探讨[J]. 油气藏评价与开发, 2017, 7(6):52-56.
	HU Aiguo. Influence factors and control methods of multi-cluster fracture initiation of horizontal well[J]. Reservoir Evaluation and Development, 2017, 7(6): 52-56.
[17]	李勇明, 周文武, 赵金洲, 等. 低渗透油藏水平井分段压裂半解析产能计算与影响因素研究[J]. 油气藏评价与开发, 2018, 8(2):52-57.
	LI Yongming, ZHOU Wenwu, ZHAO Jinzhou, et al. Semi-analytical productivity calculation and sensitive factors for the multi-stage fractured horizontal well in low permeability reservoirs[J]. Reservoir Evaluation and Development, 2018, 8(2): 52-57.
[18]	刘子雄, 李啸南, 王金伟, 等. 致密气藏水平井甜点段识别方法研究[J]. 中国石油勘探, 2021, 26(3):117-125.
	LIU Zixiong, LI Xiaonan, WANG Jinwei, et al. Study on method of sweet spot interval identification of tight gas reservoir in horizontal well[J]. China Petroleum Exploration, 2021, 26(3):117-125.
[19]	王宇, 李晓, 王金波, 等. 水力压裂中的应力阴影效应与数值计算[J]. 天然气地球科学, 2015, 26(10):1941-1950.
	WANG Yu, LI Xiao, WANG Jinbo, et al. Numerical modeling of stress shadow effect on hydraulic fracturing[J]. Natural Gas Geoscience, 2015, 26(10):1941-1950.