Re-Fracturing Technique Using Forced Fracture Re-Orientation of Low Production Oil and Gas Wells
-
摘要: 为提高低产油气井产能和延缓压裂后产量递减速度，在分析重复压裂技术原理和存在问题的基础上，提出了增大改造体积的强制裂缝转向重复压裂技术。首先计算满足裂缝转向所需的限定最高压力，然后利用研制的水溶性转向剂在原有裂缝中形成憋压，直至压力达到新裂缝开启的压力条件，从而实现强制裂缝转向、增大压裂改造体积的目的。该技术在DJ气田3口井进行了现场试验，加入转向剂后井口压力平均上升幅度达到12.8 MPa，压裂后平均单井产气量增加3 000 m3/d。研究结果表明，强制裂缝转向重复压裂技术具有转向成功率高、转向剂用量少和适用性强等技术优势，增产效果显著，为低产油气井重复改造提供了新的技术手段。Abstract: To improve the productivity of low production gas and oil wells and to delay or mitigate the post-fracturing production decline rate,a re-fracturing technique using forced fracture re-orientation to enlarge the stimulated volume was proposed based on the analysis of the principle of the re-fracturing technique and the existing problems.By first calculating the maximum pressure for re-orientation,the newly-constituted water soluble diverting agent was applied to build the pressure in original fractures until the pressure was high enough to create a new fracture,thereby accomplishing the objective to forcibly divert fractures and enlarge fractured volume.This technique has been put into practice in three wells of the DJ Gasfield,resulting in the average wellhead pressure increasing up to 12.8 MPa and the average single-well gas production increasing by 3 000 m3/d after the adding the diverting agent.The research and application results indicated that this re-fracturing technique using forced fracture re-orientation has the technical advantages such as achieving a high success rate of re-orientation operation,reducing the amount of diverting agent used,being suitable for extensive applications,with an obvious production increase.Thus the re-fracture technique using forced fracture re-orientation provides a new technical method in restimulation of low production wells.
-
-
[1] 刘雨,艾池.多级压裂诱导应力作用下天然裂缝开启规律研究[J].石油钻探技术,2015,43(1):20-26. LIU Yu,AI Chi.Opening of natural fractures under induced stress in multi-stage fracturing[J].Petroleum Drilling Techniques,2015,43(1):20-26. [2] 赵崇镇.深层砂砾岩水平井组立体缝网压裂优化技术[J].石油钻探技术,2014,42(5):95-99. ZHAO Chongzhen.3D fracturing network optimization techniques for horizontal wells in sandstone-conglomerate formations[J].Petroleum Drilling Techniques,2014,42(5):95-99. [3] 达引朋,陆红军,杨博丽,等.低渗透老油田新型多缝重复压裂技术研究与应用[J].石油钻探技术,2015,43(3):65-70. DA Yinpeng,LU Hongjun,YANG Boli,et al.Research and application of new refracturing technology in low permeability oilfield[J].Petroleum Drilling Techniques,2015,43(3):65-70. [4] 张弢,李文彬,刘亭.缝内转向技术在老井缝网压裂中的应用[J].钻采工艺,2016,39(4):41-44. ZHANG Tao,LI Wenbin,LIU Ting.Application of fracturing turnaround technology in old wells crack network fracturing[J].Drilling Production Technology,2016,39(4):41-44. [5] 苏良银,庞鹏,达引朋,等.低渗透油田暂堵重复压裂堵剂用量优化与现场试验[J].断块油气田,2014,21(1):114-117. SU Liangyin,PANG Peng,DA Yinpeng,et al.Usage optimization and field test of blocking agent for temporal-blocked re-fracturing in low permeability oilfield[J].Fault-Block Oil Gas Field,2014,21(1):114-117. [6] 郭春华,刘林,李玉华.场气田致密低渗透气藏重复压裂工艺技术[J].石油钻探技术,2006,34(4):77-70. GUO Jianchun,LIU Lin,LI Yuhua.The research and application of re-frac in Xinchang Gas Field[J].Petroleum Drilling Techniques,2006,34(4):77-79. [7] 刘艳艳,刘大伟,刘永良,等.水力压裂技术研究现状及发展趋势[J].钻井液与完井液,2011,28(3):75-78. LIU Yanyan,LIU Dawei,LIU Yongliang,et al.Study progresses of hydraulic fracturing technology[J].Drilling Fluid Completion,2011,28(3):75-78. [8] 钟烨,郭建春,杨林,等.川西重复压裂气井应力场分析[J].钻采工艺,2013,36(3):35-37,48. ZHONG Ye,GUO Jianchun,YANG Lin, et al.Stress field analysis of re-fracturing gas well in Western Sichuan[J].Drilling Production Technology,2013,36(3):35-37,48. [9] 才博,丁云宏,卢拥军,等.提高改造体积的新裂缝转向压裂技术及其应用[J].油气地质与采收率,2012,19(5):108-110. CAI Bo,DING Yunhong,LU Yongjun, et al.Study and application of new in-fissure fracturing technique for improving stimulated reservoir volume[J].Petroleum Geology and Recovery Efficiency, 2012,19(5):108-110. [10] 李玮,纪照生.暂堵转向压裂机理有限元分析[J].断块油气田,2016,23(4):514-517. LI Wei,JI Zhaosheng.Finite element analysis of temporary plugging and fracturing mechanism[J].Fault-Block Oil Gas Field,2016,23(4):514-517. [11] 李宪文,樊凤玲,赵文,等.转向压裂工艺在长庆油田的适应性分析[J].油气地质与采收率, 2010, 17(5):102-104. LI Xianwen,FAN Fengling,ZHAO Wen,et al.Adaptability analysis on oriented fracturing technique in Changqing Oilfield[J].Petroleum Geology and Recovery Efficiency,2010,17(5):102-104. [12] 谢朝阳,尚立涛,唐鹏飞,等.大规模缝内转向压裂技术研究与试验[J].大庆石油地质与开发,2016,35(2):66-69. XIE Chaoyang,SHANG Litao,TANG Pengfei,et al.Research and test of large-scale inside-seam steering fracturing technique[J].Petroleum Geology and Oilfield Development in Daqing, 2016,35(2):66-69. [13] 杨昕谅,周洪亮,肖立国,等.转向压裂井裂缝转向影响因素分析[J].科学技术与工程,2014,14(32):192-196. YANG Xinliang,ZHOU Hongliang,XIAO Liguo,et al.The analysis of fracture reorientation influence factors in turnaround fracture well[J].Science Technology and Engineering,2014,14(32):192-196. [14] 翁定为,雷群,李东旭,等.缝网压裂施工工艺的现场探索[J].石油钻采工艺,2013,35(1):59-62. WENG Dingwei,LEI Qun,LI Dongxu,et al.Network fracturing field test[J].Oil Drilling Production Technology,2013,35(1):59-62. [15] 李士斌,王昶皓,张立刚.重复压裂裂缝转向机理及储层评价方法[J].断块油气田,2014,21(3):364-367. LI Shibin,WANG Changhao,ZHANG Ligang.Fracture reorientation of refracturing and reservoir evaluation methods[J].Fault-Block Oil Gas Field,2014,21(3):364-367. [16] 唐述凯,李明忠,綦民辉,等.重复压裂前诱导应力影响新裂缝转向规律[J].断块油气田,2017,24(4):557-560. TANG Shukai,LI Mingzhong,QI Minhui,et al.Study of fracture reorientation caused by induced stress before re-fracturing[J].Fault-Block Oil Gas Field,2017,24(4):557-560. [17] SIEBRITS E,ELBEL J L,HOOVER R S,et al.Refracture reorientation enhances gas production in Barnett shale tight gas wells[R].SPE 63030,2000.
[18] 刘洪,易俊,李文华,等.重复压裂气井三维诱导应力场数学模型[J].石油钻采工艺,2004,26(2):57-61. LIU Hong,YI Jun,LI Wenhua,et al.Mathematical model of 3D induced stress field in refracturing gas well[J].Oil Drilling Production Technology,2004,26(2):57-61. [19] 刘立峰,张士诚.通过改变近井地应力场实现页岩储层缝网压裂[J].石油钻采工艺,2011,33(4):71-74. LIU Lifeng,ZHANG Shicheng.Net fracturing by changing the surrounding in-situ stress in shale reservoirs[J].Oil Drilling Production Technology,2011,33(4):71-74. [20] 杨宇,郭建春,康毅力,等.重复压裂工艺在川西致密低渗气藏中的应用分析[J].断块油气田,2006,13(4):64-66. YANG Yu,GUO Jianchun,KANG Yili,et al.Application of refracturing technology in tight gas reservoir of West Sichuan[J].Fault-Block Oil Gas Field,2006,13(4):64-66. [21] 达引朋,李志航,姚百胜,等.安塞油田中高含水期油井重复压裂技术研究与应用[J].石油地质与工程,2008,22(2):74-76. DA Yinpeng,LI Zhihang,YAO Baisheng,et al.Study on refracturing technique and its application in oil well with medium-high water content at ansai oilfield[J].Petroleum Geology and Engineering,2008,22(2):74-76. [22] 苏良银,白晓虎,陆红军,等.长庆超低渗透油藏低产水平井重复改造技术研究及应用[J].石油钻采工艺,2017,39(4):521-527. SU Liangyin BAI Xiaohu,LU Hongjun.et al.Study on reppated stimalation technology and it application to in low-yield horizontal wells in ultra low permeability oil reservoirs,Changqing Oilfield[J].Oin Drilling Production Technology,2017,39(4):521-527. -
期刊类型引用(15)
1. 黄涛，钟颖，牟秋杭，严耀辉，李建林，张浩. 复杂缝网压裂二氧化碳悬浮支撑剂技术及悬砂性能. 油田化学. 2025(01): 38-43+51 . 
百度学术
2. 王迪东，曹晶. 一步水热改性石英砂支撑剂及性能研究. 非金属矿. 2024(03): 5-9 . 百度学术
3. 张龙胜，王维恒. 双壳型覆膜支撑剂DSCP的研制及现场试验. 石油钻探技术. 2023(01): 91-97 . 本站查看
4. 张敬春，任洪达，俞天喜，尹剑宇，周健，周洪涛. 压裂支撑剂研究与应用进展. 新疆石油天然气. 2023(01): 27-34 . 百度学术
5. 陈思源，刘浩，金衍，史爱萍，徐泉. 压裂支撑剂发展综述与展望. 石油科学通报. 2023(03): 330-346 . 百度学术
6. 任洪达，董景锋，高靓，刘凯新，张敬春，尹淑丽. 新疆油田玛湖砂岩储层自悬浮支撑剂现场试验. 油气藏评价与开发. 2023(04): 513-518 . 百度学术
7. 刘又铭，熊廷松，代安安，丁富寿，刘光杰. 压裂覆膜石英砂沉降机理研究及压裂施工排量优化. 石油石化节能. 2022(01): 47-50+11 . 百度学术
8. 梁莹. 自悬浮支撑剂研究进展及应用现状. 油气井测试. 2022(01): 47-51 . 百度学术
9. 毛峥，李亭，刘德华，杨琦. 水力压裂支撑剂应用现状与研究进展. 应用化工. 2022(02): 525-530+537 . 百度学术
10. 王磊. 牛庄洼陷官17井区沙四段页岩油自悬浮支撑剂压裂试验. 油气藏评价与开发. 2022(04): 684-689 . 百度学术
11. 黄博，雷林，汤文佳，徐宁蔚，熊炜. 自悬浮支撑剂清水携砂压裂增产机理研究. 油气藏评价与开发. 2021(03): 459-464 . 百度学术
12. 谭晓华，丁磊，胥伟冲，瞿霜，温中林. 覆膜支撑剂导气阻水效果可视化试验研究. 石油钻探技术. 2021(03): 117-123 . 本站查看
13. 王兴文，何颂根，林立世，栗铁峰，王峻峰. 威荣区块深层页岩气井体积压裂技术. 断块油气田. 2021(06): 745-749 . 百度学术
14. 白云云，宋本凯. 煤层气水力压裂工艺新进展. 榆林学院学报. 2019(02): 13-16 . 百度学术
15. 田中原，卢祥国，曹伟佳，陈清，闫冬. 自悬浮与普通支撑剂裂缝导流能力实验研究. 石油化工高等学校学报. 2019(03): 33-38 . 百度学术
其他类型引用(10)
计量
- 文章访问数: 1694
- HTML全文浏览量: 123
- PDF下载量: 1904
- 被引次数: 25
下载:
