苏里格致密砂岩气藏小井眼侧钻水平井配套技术发展与展望

doi:10.3969/j.issn.1672-7703.2023.02.012

摘要/Abstract

摘要： 针对苏里格气田纵向多层系含气、横向储层非均质性强等地质特征，为充分挖潜老区剩余储量，确保气田高效稳产，2011年起，在苏里格气田开展侧钻水平井技术攻关和现场实践，剩余气刻画、地质选井、钻完井、储层改造、排水采气等配套技术逐步完善和提升，形成了一套成熟的苏里格致密砂岩气藏侧钻水平井开发技术。截止到2022年6月底，完钻57口井，平均水平段长度由初期的614.2m增加到753m，钻井周期由初期的63.7天缩短到35天，缩短45.1%，完井周期由91.5天缩短到52.6天，缩短42.5%，2021年首次实现套管完井和φ88.9mm套管桥塞分段压裂，成功率达100%；投产42口井，平均井口压力由9.4MPa增加到13.3MPa，首月平均单井日产量由2.0×10⁴m³增长到4.0×10⁴m³，内部收益率保持在8%以上，经济效益显著。下一步将针对降成本和提产量目标，围绕多元化设计、智能化发展、一体化协作、全生命周期管理等方向开展技术攻关。小井眼侧钻水平井技术为后期苏里格致密砂岩气效益开发提供了技术保障，也可为其他油气田高效动用剩余油气提供技术参考和解决思路。

关键词: 苏里格气田, 剩余储量, 小井眼侧钻水平井, 套管完井, 全生命周期, 采收率

Abstract: Given the complex geological characteristics of Sulige Gasfield, such as multi-layer gas bearing in vertical and strong reservoir heterogeneity in lateral, technology research and field practice of sidetrack horizontal well have been conducted in Sulige Gasfield since 2011, so as to tap the remaining reserves in mature areas and ensure the high-efficiency and stable production of gas field. As a result, a series of supporting technologies, including remaining gas characterization, well location selection, drilling and completion, reservoir reconstruction, and drainage gas recovery, have gradually been improved, and a set of mature sidetrack horizontal well development technologies has been researched for tight sandstone gas reservoir in Sulige Gasfield. By the end of June 2022, 57 wells had been drilled, with the average horizontal section increased from 614.2 m to 753 m, drilling cycle decreased from 63.7 days in the initial stage to 35 days, a decrease of 45.1%, and well completion period decreased from 91.5 days to 52.6 days, a decrease of 42.5%. The cased-hole completion and bridge plug staged fracturing by using φ88.9 mm casing were achieved for the first time in 2021, with a success rate of 100%. Till now, 42 wells have been put into production, with the average wellhead pressure increased from 9.4 MPa to 13.3 MPa, average gas rate increased from 2.0×10⁴m³/d to 4.0×10⁴m³/d of a single well in the first month, and the internal rate of return remained higher than 8%, showing significant economic benefits. Targeting at the goal of cost reduction and production increase, further technology research will be conducted focusing on the diversified design, intelligent development, integrated collaboration, and full-life cycle management. The technology of slim-hole sidetrack horizontal well drilling provides technical support for the beneficial development of Sulige tight sandstone gas reservoir in the late stage and technical reference and solutions for the high-efficiency production of remaining oil and gas in other oilfields.

中图分类号:

TE243.2

叶成林. 苏里格致密砂岩气藏小井眼侧钻水平井配套技术发展与展望[J]. 中国石油勘探, 2023, 28(2): 133-143.

Ye Chenglin. Development and prospect of support technology of slim hole sidetrack horizontal well for Sulige tight sandstone gas reservoir[J]. China Petroleum Exploration, 2023, 28(2): 133-143.

参考文献

[1] 王丽琼，王志恒，马羽龙，等.苏里格气田老井侧钻水平井开发技术与应用[J].新疆石油地质，2022,43(3):368-377.
Wang Liqiong, Wang Zhiheng, Ma Yulong, et al. Technologies and application of sidetracking horizontal well in existing wells in Sulige Gasfield[J]. Xinjiang Petroleum Geology, 2022,43(3): 368-377.
[2] 胡强法，朱峰，吕维平，等.中国石油连续管作业技术进展及发展建议[J].石油科技论坛，2022,41(3):77-85.
Hu Qiangfa, Zhu Feng, Lv Weiping, et al. Suggestions on CNPC coiled tubing service technology development[J]. Petroleum Science and Technology Forum, 2022,41(3):77-85.
[3] 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 Gasfield, Ordos Basin，and its development prospect[J]. Natural Gas Industry, 2015,35(12):35-41.
[4] 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 Gasfield[J]. Petroleum Exploration and Development, 2019,46(2):370-377.
[5] 张益，刘帮华，胡均志，等．苏里格气田苏14井区二叠系下石盒子组盒8段多期叠置砂体储层合理开发方式研究[J].中国石油勘探，2021,26(6):165-174.
Zhang Yi, Liu Banghua, Hu Junzhi, et al. Study on development mode of multi-stage superimposed sandstone reservoir of He 8 member of the Permian Lower Shihezi Formation in Su 14 well block of Sulige Gasfield[J]. China Petroleum Exploration, 2021,26(6):165-174.
[6] 付金华，董国栋，周新平，等．鄂尔多斯盆地油气地质研究进展与勘探技术[J].中国石油勘探，2021,26(3):19-40.
Fu Jinhua, Dong Guodong, Zhou Xinping, et al. Research progress of petroleum geology and exploration technology in Ordos Basin[J]. China Petroleum Exploration, 2021,26(3):19-40.
[7] 席胜利，刘新社，孟培龙.鄂尔多斯盆地大气区的勘探实践与前瞻[J]. 天然气工业，2015,35(8):1-9.
Xi Shengli, Liu Xinshe, Meng Peilong. Exploration practices and prospect of Upper Paleozoic giant gas fields in the Ordos Basin[J]. Natural Gas Industry, 2015,35(8):1-9.
[8] 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 Gasfield old wells[J]. Drilling & Production Technology, 2016,39(1):23-25.
[9] 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]. Geoscience，2018,32(4):832-841.
[10] 徐浩，张君峰，汤达祯，等.鄂尔多斯盆地苏里格气田低压形成的控制因素[J].石油勘探与开发，2012,39(1):64-67.
Xu Hao, Zhang Junfeng, Tang Dazhen, et al. Controlling factors of underpressure reservoirs in the Sulige Gasfield, Ordos Basin[J]. Petroleum Exploration and Development, 2012, 39(1):64-67.
[11] 郭智，孙龙德，贾爱林，等.辫状河相致密砂岩气藏三维地质建模[J].石油勘探与开发，2015,42(1):76-83.
Guo Zhi, Sun Longde, Jia Ailin, et al. 3D geological modeling for tight sand gas reservoir of braided river facies[J]. Petroleum Exploration and Development, 2015,42(1):76-83.
[12] 何自新，付金华，席胜利，等.苏里格大气田成藏地质特征[J].石油学报，2003,24(2):6-12.
He Zixin, Fu Jinhua, Xi Shengli, et al. Geological features of reservoir formation of Sulige Gasfield[J]. Acta Petrolei Sinica, 2003,24(2):6-12.
[13] 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):389-392.
Tang Qinxi. Application of geosteering technology in the development of Sulige Gasfield: case studies of the Su10 and Su53 blocks[J]. Oil & Gas Geology, 2013,34(3):389-392.
[14] 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 Gasfield[J]. Natural Gas Industry, 2012,32(6):39-42.
[15] 何东博，贾爱林，冀光，等.苏里格大型致密砂岩气田开发井型井网技术[J].石油勘探与开发，2013,40(1):79-89.
He Dongbo, Jia Ailin, Ji Guang, et al. Well type and pattern optimization technology for large scale tight sand gas, Sulige Gasfield[J]. Petroleum Exploration and Development, 2013, 40(1):79-89.
[16] 王学正，韩永亮，王海霞，等.侧钻水平井分段压裂完井技术在气田的应用[J].石油矿场机械，2014,43(12):44-47.
Wang Xuezheng, Han Yongliang, Wang Haixia, et al. Application of multi-stage fracture completion techniques of horizontal well with slim hole oriented window and sidetracking in gas field[J]. Oil Field Equipment, 2014,43(12):44-47.
[17] 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.
[18] 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.
[19] 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.
[20] 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，Du Zhenchuan. The practice and understanding of sidetracking horizontal wells with directional well opening[J]. Petroleum Drilling Technigues, 1997,25(1):1-3.
[21] 何伟国，唐明，吴柳根.塔河油田深层侧钻水平井膨胀套管钻井完井技术[J].石油钻探技术，2013,41(5):62-66.
He Weiguo, Tang Ming, Wu Liugen. Expandable casing drilling and completion technology in deep sidetracked horizontal wells of Tahe Oilfield[J]. Petroleum Drilling Techniques, 2013, 41(5):62-66.
[22] 郭元恒，张进双.元坝1-侧１井超深小井眼侧钻井技术[J].石油钻探技术，2010,38(6):113-115.
Guo Yuanheng, Zhang Jinshuang. Sidetrack technology of well Yuanba1-C1 with ultra-deep slim hole[J]. Petroleum Drilling Technigues, 2010,38(6):113-115.
[23] 王兴武.小井眼长裸眼侧钻水平井钻井实践[J].钻采工艺，2010,33(3): 30-31.
Wang Xingwu. Sidetracking techniques for horizontal well with slim-hole long hole[J]. Drilling and Production Technology, 2010,33(3):30-31.
[24] 喻鹏，车航，刘汉成，等.苏75-706H水平井裸眼封隔器10级分段压裂实践[J].石油钻采工艺，2010,32(6):72-76.
Yu Peng, Che Hang, Liu Hancheng, et al. Practice of 10 stage fracturing with open hole packer in horizontal well in Well Su75-70-6H[J]. Petroleum Drilling and Production Technology, 2010,32(6):72-76.
[25] 王国勇.致密砂岩气藏水平井整体开发实践与认识：以苏里格气田苏53区块为例[J].石油天然气学报，2012,34(5):153-157.
Wang Guoyong. Practice and recognition of horizontal well development in tight sandstone gas reservoirs: a case study from Block Su53[J]. Journal of Oil and Gas Technology, 2012, 34(5):153-157.
[26] 孟德伟，贾爱林，冀光，等.大型致密砂岩气田气水分布规律及控制因素：以鄂尔多斯盆地苏里格气田西区为例[J].石油勘探与开发，2016,43(4):607-614,635.
Meng Dewei, Jia Ailin, Ji Guang, et al. Water and gas distribution and its controlling factors of large scale tight sand gas: a case study of western Sulige Gasfield, Ordos Basin, NW China[J]. Petroleum Exploration and Development, 2016, 43(4):607-614,635.
[27] 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 Gasfield during the 13th Five-Year Plan[J]. Natural Gas Industry, 2016,36(3):30-40.
[28] 卢涛，张吉，李跃刚，等.苏里格气田致密砂岩气藏水平井开发技术及展望[J].天然气工业，2013,33(8):38-43.
Lu Tao, Zhang Ji, Li Yuegang, et al. Horizontal well development technology for tight sandstone gas reservoirs in the Sulige Gasfield, Ordos Basin[J]. Natural Gas Industry, 2013, 33(8):38-43.