Rapid Evaluation of Shale Reservoirs Based on Pre-Frac Injection/Falloff Diagnostic Test
-
摘要: 页岩气储层渗透率非常低，采用常规压力恢复测试方法评价储层时需要很长时间才能探测到径向流动，导致效率非常低，而微注入压降测试方法可以使页岩气储层在较短时间内出现拟径向流，从而实现储层的快速评价。在分析微注入压降测试方法快速评价页岩气储层原理的基础上，针对涪陵页岩气储层特点，从设备选择、注入排量、总注入量和注入液体选择等方面对微注入压降测试施工参数进行了优化设计。研究结果发现，涪陵页岩气田可以采用150~500 L/min排量注入清水进行微注入压降测试，待地层破裂后再持续泵注10~30 min，注入总量控制在5~15 m3，就可以获得较好的测试结果。采用微注入压降测试方法对涪陵页岩气田6口页岩气井储层进行了评价，通过对压降测试曲线进行G函数分析获得了原始地层压力和储层有效渗透率，其与试验分析和压力测试结果相吻合。这表明，采用微注入压降测试方法可以实现对页岩储层的快速评价。Abstract: Shale gas reservoirs are characterized by extremely low permeability.Conventional build-up tests used for reservoir assessments have extremely low efficiencies due to the prolonged time required for detection of radial flows.On the other hand,pre-frac injection/falloff diagnostic test(also known as Diagnostic Fracture Injection Test,DFIT)can detect pseudo-radial flow in a short time,and consequently may quickly assess reservoir conditions.Based on that,design optimization was performed for shale gas reservoirs in the Fuling Area with consideration to equipment selection,injection flow rates,overall injection volume and properties of injection fluids.Research results showed that satisfactory test results could be obtained by using a flow-rate of 150-500L/min and by bumping for 10-30 min after formation fractured.The total volume of injection fluids should be maintained at 5-15 m3.DFIT had been conducted in 6 wells to assess the properties of shale gas reservoirs. Through G-function and ACA analysis using the acquired data,original formation pressures and effective reservoir permeability were determined and it was discovered that relevant results coincided well with formation test results. It had been verified that the DFIT could be used for rapid assessment of shale reservoirs.
-
Keywords:
- shale gas /
- DFIT /
- well test data interpretation /
- reservoir evaluation /
- G-function /
- Fuling Shale Gas Field
-
-
[1] 薛承瑾.页岩气压裂技术现状及发展建议[J].石油钻探技术,2011,39(3):24-29. XUE Chengjin.Technical advance and development proposals of shale gas fracturing[J].Petroleum Drilling Techniques,2011,39(3):24-29. [2] 王林,平恩顺,张建华,等.可降解桥塞研制及其承压性能试验[J].石油机械,2017,45(2):64-67. WANG Lin,PING Enshun,ZHANG Jianhua,et al.Development and pressure bearing performance experiment of the degradable bridge plug[J].China Petroleum Machinery,2017,45(2):64-67. [3] 汪友平,王益维,孟祥龙,等.流体加热方式原位开采油页岩新思路[J].石油钻采工艺,2014,36(4):71-74. WANG Youping,WANG Yiwei,MENG Xianglong,et al.A new idea for in-situ retorting oil shale by way of fluid heating technology[J].Oil Drilling Production Technology,2014,36(4):71-74. [4] 魏辽,秦金立,朱玉杰,等.套管水平井全通径分段压裂工具新进展[J].断块油气田,2016,23(2):248-251. WEI Liao,QIN Jinli,ZHU Yujie,et al.New development of full-bore and unlimited multistage fracturing tools for cased hole horizontal well[J].Fault-Block Oil Gas Field,2016,23(2):248-251. [5] 秦钰铭.大牛地气田盒1储层长水平段压裂工艺技术研究与应用[J].断块油气田,2015,22(5):673-676. QIN Yuming.Long horizontal well fracturing technology and application for He 1 Layer,Daniudi Gas Field[J].Fault-Block Oil Gas Field,2015,22(5):673-676. [6] 黄进,吴雷泽,游园,等.涪陵页岩气水平井工程甜点评价与应用[J].石油钻探技术,2016,44(3):16-20. HUANG Jin,WU Leize,YOU Yuan,et al.The evaluation and application of engineering sweet spots in a horizontal well in the Fuling Shale Gas Reservoir[J].Petroleum Drilling Techniques,2016,44(3):16-20. [7] 秦金立,陈作,杨同玉,等.鄂尔多斯盆地水平井多级滑套分段压裂技术[J].石油钻探技术,2015,43(1):7-12. QIN Jinli,CHEN Zuo,YANG Tongyu,et al.Technology of staged fracturing with multi-stage sleeves for horizontal wells in the Ordos Basin[J].Petroleum Drilling Techniques,2015,43(1):7-12. [8] BARREE R D,MISKIMINS J,GILBERT J.Diagnostic fracture injection tests:common mistakes,misfires,and misdiagnoses[R].SPE 169539,2014.
[9] NOLTE K G.Determination of fracture parameters from fracturing pressure decline[R].SPE 8341,1979.
[10] SOLIMAN M Y,KABIR C S.Testing unconventional formations[J].Journal of Petroleum Science and Engineering,2012,92/93:102-109.
[11] PADMAKAR A S.Geomechanics coupled reservoir flow simulation for diagnostic fracture injection test design and interpretation in shale reservoirs[R].SPE 166201,2013.
[12] WALLACE J,KABIR C S,CIPOLLA C.Multiphysics investigation of diagnostic fracture injection tests in unconventional reservoirs[R].SPE 168620,2014.
[13] 王海涛.页岩气探井测试压裂方案设计与评价[J].石油钻探技术,2012,40(1):12-16. WANG Haitao.Design and evaluation ofmini-frac scheme in shale gas exploration well[J].Petroleum Drilling Techniques,2012,40(1):12-16. [14] 曾博,王莉,张晓伟.小型压裂测试分析方法在页岩气开发中的应用[J].科学技术与工程,2014,14(8):151-155. ZENG Bo,WANG Li,ZHANG Xiaowei.Application of mini-frac analysis in the development of shale plays[J].Science Technology and Engineering,2014,14(8):151-155. [15] 薛承瑾,秦钰铭.涪陵页岩气压裂试气工程技术实践与认识[C]//第六届全国天然气藏高效开发技术研讨会.北京,9月14-16日,2015. XUE Chengjin,QIN Yuming.Understanding and practice of fracturing and testing technology on Fuling shale gas reservoir[C]//The 6th National Symposium on Highly-Efficient Development of Gas Reservoir.Beijing,September 14-16,2015. [16] BARREE R D,MUKHERJEE H.Determination of pressure dependent leakoff and its effect on fracture geometry[R].SPE 36424,1996.
[17] MEYER B R,HAGEL M W.Simulated mini-frac analysis[J].Journal of Canadian Petroleum Technology,1989,28(5):63-73.
[18] BARREE R D,BARREE V L,CRAIG D P.Holistic fracture diagnostics:consistent interpretation of prefrac injection tests using multiple analysis methods[R].SPE 107877,2009.
-
期刊类型引用(23)
1. 车继勇，丁鹏，王红月，马永刚. 组合钻具定向钻井造斜及提速技术方法. 设备管理与维修. 2024(08): 98-100 . 
百度学术
2. 熊浪豪，巢世伟，柏尚宇，陈君，范乘浪，崔建峰. E Zhanbyrshy-3井钻井实践及技术难点分析. 内蒙古石油化工. 2023(05): 63-66+120 . 百度学术
3. 汪伟，柳贡慧，李军，查春青，连威，夏铭莉. 脉动式扭转冲击钻井工具工作特性分析与测试. 石油钻探技术. 2022(05): 63-69 . 本站查看
4. 宋周成，翟文宝，邓昌松，徐杨，徐席明，汪鑫，文涛. 富满油田超深井井身结构优化技术与应用. 钻采工艺. 2022(06): 36-41 . 百度学术
5. 王涛，刘锋报，罗威，晏智航，陆海瑛，郭斌. 塔里木油田防漏堵漏技术进展与发展建议. 石油钻探技术. 2021(01): 28-33 . 本站查看
6. 崔月明，史海民，张清. 吉林油田致密油水平井优快钻井完井技术. 石油钻探技术. 2021(02): 9-13 . 本站查看
7. 苏崭，王博，盖京明，李玮，赵欢，陈冰邓. 复合式扭力冲击器在坚硬地层中的应用. 中国煤炭地质. 2021(05): 47-50+57 . 百度学术
8. 张强，饶志华，秦世利，金勇. 南海东部深层古近系高效开发技术探索与实践. 石油化工应用. 2021(06): 34-38 . 百度学术
9. 李银婷，董小虎. 顺北油田钻井参数强化的提速效果评价. 钻探工程. 2021(07): 72-78 . 百度学术
10. 陈冬毅，徐鲲，张作伟，吕广，张鑫，郭小明. 恒压恒扭工具在渤海油田中的应用. 科学技术创新. 2021(22): 153-154 . 百度学术
11. 严德，张玉山，宋玲安，陈彬，李彬，刘保波. 深水高温高压井钻井技术探索与实践. 中国石油和化工标准与质量. 2021(13): 193-194 . 百度学术
12. 张喆，闫楚旋，冯震，脱直霖，石朝龙. 塔里木油田HLHT区块优快钻井技术研究. 云南化工. 2021(10): 127-129 . 百度学术
13. 李双贵，于洋，樊艳芳，曾德智. 顺北油气田超深井井身结构优化设计. 石油钻探技术. 2020(02): 6-11 . 本站查看
14. 袁国栋，王鸿远，陈宗琦，母亚军，席宝滨. 塔里木盆地满深1井超深井钻井关键技术. 石油钻探技术. 2020(04): 21-27 . 本站查看
15. 张智亮，王威，伊明，刘强. 井下安全监控系统设计与实现. 石油钻探技术. 2020(06): 65-70 . 本站查看
16. 周波，汪海阁，张富成，纪国栋，韩泽龙，武强. 温度压力对岩石可钻性和破岩效率影响实验. 石油钻采工艺. 2020(05): 547-552 . 百度学术
17. 李林涛，万小勇，黄传艳，潘丽娟，郭知龙，曹宗波，张伟博. 双向卡瓦可回收高温高压封隔器的研制与应用. 石油机械. 2019(03): 81-86 . 百度学术
18. 路宗羽，赵飞，雷鸣，邹灵战，石建刚，卓鲁斌. 新疆玛湖油田砂砾岩致密油水平井钻井关键技术. 石油钻探技术. 2019(02): 9-14 . 本站查看
19. 江波，任茂，王希勇. 彭州气田PZ115井钻井提速配套技术. 探矿工程(岩土钻掘工程). 2019(08): 73-78 . 百度学术
20. 郑振国，黎红胜，赵海艳，温慧芸，孙东方. 哥伦比亚Matambo区块深井钻井关键技术. 石油钻探技术. 2018(02): 30-37 . 本站查看
21. 丁红，宋朝晖，袁鑫伟，邢战，张宏阜，张仪. 哈拉哈塘超深定向井钻井技术. 石油钻探技术. 2018(04): 30-35 . 本站查看
22. 李世昌，闫立鹏，李建冰，白文路，杨秀丽，闫天宇. 自循环粒子射流钻井提速工具机理研究. 中国锰业. 2018(03): 98-102 . 百度学术
23. 陈养龙，席宝滨，晁文学，朱伟厚. 顺北区块Ⅰ号断裂带钻井分层提速技术. 断块油气田. 2018(05): 649-652 . 百度学术
其他类型引用(7)
计量
- 文章访问数: 6012
- HTML全文浏览量: 116
- PDF下载量: 5361
- 被引次数: 30
下载:
