Technologies and Application of Sidetracking Horizontal Well in Existing Wells in Sulige Gas Field

doi:10.7657/XJPG20220316

Abstract

Abstract:

In order to improve the effective reservoir encounter rate during sidetracking drilling in existing wells,with a block in central Sulige gas field as an example,and combined with the geological characteristics and development status of the gas field,the key geological technologies for sidetracking horizontal drilling in existing wells were summarized from the aspects of optimal deployment and geosteering. On this basis,the development effect of sidetracking horizontal wells was discussed in light of drilling effect,production index,benefit evaluation,etc.,and the influence of various factors on the development effect was comprehensively analyzed. The research results show that the remaining gas mainly enriches in the areas including the rim of mid-channel bar,braided channel,and middle or bottom of the mid-channel bar in the sand belt of main channel. Based on the economic evaluation,the selection criteria for sidetracking well locations were established,that is,the lower limit of the effective thickness of recoverable beds is 4 m vertically,and the lower limit of the abundance of the remaining reserves is 0.42×10⁸ m³/km² on the plane. Using 3D geological model,stratigraphic dip evaluation,pilot hole information and data acquired while drilling,the horizontal-well geosteering sidetracking technology was formed,and three horizontal-section geosteering modes were provided. For 23 sidetracking horizontal wells in the study area,the average effective reservoir encounter rate is 59.7%,the average initial gas production is 2.9×10⁴ m³,and the cumulative incremental production is 3.13×10⁸ m³.

Key words: Ordos basin, Sulige gas field, existing well sidetracking, horizontal well, tight sandstone, recovery of reserves, existing well stimulation

CLC Number:

TE243

WANG Liqiong, WANG Zhiheng, MA Yulong, ZENG Qingxiong, ZHENG Fan. Technologies and Application of Sidetracking Horizontal Well in Existing Wells in Sulige Gas Field[J]. Xinjiang Petroleum Geology, 2022, 43(3): 368-377.

Figures/Tables 7

Fig. 1.

Table 1.

Fig. 2.

Fig. 3.

Fig. 4.

Fig. 5.

Fig. 6.

References 25

[1]	白慧, 李浮萍, 王龙. 老井侧钻水平井开发技术在苏里格气田的应用[J]. 石油化工应用, 2014,33(9):14-17.
	BAI Hui, LI Fuping, WANG Long. Application prospect of sidetracking horizontal technology in old wells in Sulige gasfield[J]. Petrochemical Industry Application, 2014,33(9):14-17.
[2]	谭中国, 卢涛, 刘艳侠, 等. 苏里格气田“十三五”期间提高采收率技术思路[J]. 天然气工业, 2016,36(3):30-40.
	TAN Zhongguo, LU Tao, LIU Yanxia, et al. Technical ideas of recovery enhancement in the Sulige gas field during the 13th Five Year Plan[J]. Natural Gas Industry, 2016,36(3):30-40.
[3]	赵培荣. 页岩气水平井穿行层位优选[J]. 石油实验地质, 2020,42(6):1 014-1 023.
	ZHAO Peirong. Optimization of target layer selection in shale gas horizontal wells[J]. Petroleum Geology & Experiment, 2020,42(6):1 014-1 023.
[4]	韦孝忠. 浅谈苏里格气田老井开窗侧钻水平井技术[J]. 钻采工艺, 2016,39(1):23-25.
	WEI Xiaozhong. Brief talk on sidetrack horizontal well technology in Sulige gas field old wells[J]. Drilling & Production Technology, 2016,39(1):23-25.
[5]	陈世春, 王树超. 小井眼侧钻短半径水平井钻井技术[J]. 石油钻采工艺, 2007,29(3):11-14.
	CHEN Shichun, WANG Shuchao. Drilling technology for sidetracking short-radius horizontal wells with slim hole[J]. Petroleum Drilling and Production Technology, 2007,29(3):11-14.
[6]	王勇刚, 陈岑, 张年念, 等. 苏3X-1区块侧钻水平井优选方法研究[J]. 四川地质学报, 2019,39(2):334-338.
	WANG Yonggang, CHEN Cen, ZHANG Niannian, et al. Research on optimization of sidetracking horizontal well in the Su3X-1 block[J]. Acta Geological Sichuan, 2019,39(2):334-338.
[7]	吴敬涛, 王振光, 都振川. 定向井开窗侧钻水平井的实践与认识[J]. 石油钻探技术, 1997,25(1):1-3.
	WU Jingtao, WANG Zhenguang, DOU Zhenchuan. The practice and understanding of sidetracking horizontal wells with directional well opening[J]. Petroleum Drilling Technology, 1997,25(1):1-3.
[8]	樊晓萍, 周全兴. 静33-侧平71套管侧钻短半径水平井钻井工艺技术[J]. 石油钻采工艺, 1997,29(2):15-20.
	FAN Xiaoping, ZHOU Quanxing. Technology of short radium casing side-tracking horizontal drilling in J-33 SP 71 well[J]. Petroleum Drilling and Production Technology, 1997,29(2):15-20.
[9]	刘明国, 舒尚文, 董世明, 等. 文72-86井套管开窗侧钻技术[J]. 断块油气田, 1994,1(4):56-60.
	LIU Mingguo, SHU Shangwen, DONG Shiming, et al. Windowing and side-tracking technology in the Well Wen 72-86[J]. Fault-Block Oil & Gas Field, 1994,1(4):56-60.
[10]	高立军, 王广新, 郭福祥, 等. 大庆油田小井眼开窗侧钻水平井钻井技术[J]. 断块油气田, 2008,15(4):94-96.
	GAO Lijun, WANG Guangxin, GUO Fuxiang, et al. Horizontal well drilling technology by slim hole casing window sidetracking in Daqing oilfield[J]. Fault-Block Oil & Gas Field, 2008,15(4):94-96.
[11]	李进步, 马志欣, 张吉, 等. 鄂尔多斯盆地苏里格气田降本增效系列技术[J]. 天然气工业, 2018,38(2):51-58.
	LI Jinbu, MA Zhixin, ZHANG Ji, et al. Technology series for cost reduction and efficiency improvement in the development of the Sulige gas field,Ordos basin[J]. Natural Gas Industry, 2018,38(2):51-58.
[12]	张金武, 王国勇, 何凯, 等. 苏里格气田老井侧钻水平井开发技术实践与认识[J]. 石油勘探与开发, 2019,46(2):370-377.
	ZHANG Jinwu, WANG Guoyong, HE Kai, et al. Practice and understanding of sidetracking horizontal drilling in old wells in Sulige gas field[J]. Petroleum Exploration and Development, 2019,46(2):370-377.
[13]	赵忠军, 李进步, 马志欣, 等. 苏36-11提高采收率试验区辫状河储集层构型单元定量表征[J]. 新疆石油地质, 2017,38(1):55-61.
	ZHAO Zhongjun, LI Jinbu, MA Zhixin, et al. Quantitative characterization of architecture units for braided river reservoir in Su 36-11 EOR test area[J]. Xinjiang Petroleum Geology, 2017,38(1):55-61.
[14]	金振奎, 杨有星, 尚建林, 等. 辫状河砂体构型及定量参数研究:以阜康、柳林和延安地区辫状河露头为例[J]. 天然气地球科学, 2014,25(3):311-317.
	JIN Zhenkui, YANG Youxing, SHANG Jianlin, et al. Sandbody architecture and quantitative parameters of single channel sandbodies of braided river:cases from outcrops of braided river outcrops in Fukang,Liulin and Yan'an areas[J]. Natural Gas Geoscience, 2014,25(3):311-317.
[15]	祝金利. 强非均质致密砂岩气藏剩余气分布定量描述与挖潜对策:以苏里格气田苏11区块北部老区为例[J]. 天然气工业, 2020,40(11):89-95.
	ZHU Jinli. Quantitative description of residual gas distribution in strong-heterogeneity tight sandstone gas reservoirs and potential tapping strategies:a case study of the old area of northern Su 11 block in Sulige gas field[J]. Natural Gas Industry, 2020,40(11):89-95.
[16]	刘金库, 孙永亮, 谢金梅. 苏里格气田25区块盒8段基于水动力能量的沉积微相展布[J]. 新疆石油地质, 2016,37(1):24-28.
	LIU Jinku, SUN Yongliang, XIE Jinmei. Hydrodynamic energy-based sedimentary microfacies distribution of in the He 8 member of lower Shihezi formation in Block-25,Sulige gas field[J]. Xinjiang Petroleum Geology, 2016,37(1):24-28.
[17]	吕志凯, 唐海发, 刘群明, 等. 苏里格大型致密砂岩气田储层结构与水平井提高采收率对策[J]. 现代地质, 2018,32(4):832-841.
	LÜ Zhikai, TANG Haifa, LIU Qunming, et al. Reservoir distribution in the Sulige large tight sandstone gas field and methods for enhancing recovery efficiency of horizontal well[J]. Geology, 2018,32(4):832-841.
[18]	孙卫锋, 张吉, 马志欣, 等. 苏里格气田水平井随钻地质导向技术及应用[J]. 岩性油气藏, 2015,27(6):132-137.
	SUN Weifeng, ZHANG Ji, MA Zhixin, et al. Geosteering technology of horizontal wells and its application in Sulige gas field[J]. Lithologic Reservoirs, 2015,27(6):132-137.
[19]	李进步, 付斌, 赵忠军, 等. 苏里格气田致密砂岩气藏储层表征技术及其发展展望[J]. 天然气工业, 2015,35(12):35-41.
	LI Jinbu, FU Bin, ZHAO Zhongjun, et al. Characterization technology for tight sandstone gas reservoirs in the Sulige gas field,Ordos basin,and its development prospect[J]. Natural Gas Industry, 2015,35(12):35-41.
[20]	李爽. 致密低渗气田侧钻水平井参数优化与应用:以苏里格气田苏S区块为例[J]. 非常规油气, 2017,4(5):51-56.
	LI Shuang. Parameter optimization and application of sidetracking horizontal wells in low-permeability tight gas reservoir:a case study of Su-S block in Sulige gas field[J]. Unconventional Oil & Gas, 2017,4(5):51-56.
[21]	陈凤喜, 王勇, 张吉, 等. 鄂尔多斯盆地苏里格气田盒8气藏开发有利区块优选研究[J]. 天然气地球科学, 2009,20(1):94-99.
	CHEN Fengxi, WANG Yong, ZHANG Ji, et al. He-8 reservoir's favourable development blocks in Sulige gasfield,Ordos basin[J]. Natural Gas Geoscience, 2009,20(1):94-99.
[22]	陈启文, 董瑜, 王飞, 等. 苏里格气田水平井开发技术优化[J]. 天然气工业, 2012,32(6):39-42.
	CHEN Qiwen, DONG Yu, WANG Fei, et al. Optimization of horizontal well development technology in the Sulige gas field[J]. Natural Gas Industry, 2012,32(6):39-42.
[23]	唐钦锡. 水平井地质导向技术在苏里格气田开发中的应用:以苏10和苏53区块为例[J]. 石油与天然气地质, 2013,34(3):388-393.
	TANG Qinxi. Application of geosteering technology in the development of Sulige gas field:case studies of the Su10 and Su53 blocks[J]. Oil & Gas Geology, 2013,34(3):388-393.
[24]	刘群明, 唐海发, 冀光, 等. 苏里格致密砂岩气田水平井开发地质目标优选[J]. 天然气地球科学, 2016,27(7):1 360-1 365.
	LIU Qunming, TANG Haifa, JI Guang, et al. Geological targets optimization for horizontal well development of tight sand gas,Sulige gasfield,Ordos basin,China[J]. Natural Gas Geoscience, 2016,27(7):1 360-1 365.
[25]	贾爱林, 唐俊伟, 何东博, 等. 苏里格气田强非均质致密砂岩储层的地质建模[J]. 中国石油勘探, 2007,12(1):12-16.
	JIA Ailin, TANG Junwei, HE Dongbo, et al. Geological modeling for sandstone reservoirs with low permeability and strong heterogeneity in Sulige gas field[J]. China Petroleum Exploration, 2007,12(1):12-16.