天然气地球科学
高级检索
作者投稿 专家审稿 编辑办公

天然气地球科学

• 天然气开发 • 上一篇    下一篇

煤系地层多层合压射孔层位及高度的优化

孙伟1，熊远贵2，王倩3，张天翔3，王小华2，甄怀宾1，朱卫平3   

  1. 1.中联煤层气国家工程研究中心有限责任公司，北京 100089；
    2.中国石油大学(北京)石油工程学院，北京 102249；3.中石油煤层气有限责任公司，北京 100028
  • 收稿日期:2018-10-20 修回日期:2019-01-13 出版日期:2019-04-10
  • 作者简介:孙伟（1987-），男，山东潍坊人，工程师，主要从事煤层气及致密砂岩气压裂工艺研究. E-mail：sunw_cbm@petrochina.com.cn.
  • 基金资助:
    国家自然科学基金面上项目“一种复杂缝网的能量断裂准则及其在致密砂岩压裂模拟中的应用” （编号：11672333）；国家科技重大专项“复杂结构井、丛式井设计与控制新技术”（编号：2017ZX05009-003）；中国石油大学（北京）克拉玛依校区人才引进科研启动项目“致密砂岩气井体积压裂的动力学机理及设计方法研究”（编号：RCYJ2018A-01-004）；国家科技重大专项“深部薄煤层群水力裂缝延伸机理实验研究”（编号：2016ZX05042-003）联合资助.

Optimization of perforated interval of multilayer commingled  fracturing in coal measure strata

Sun Wei1，Xiong Yuan-gui2，Wang Qian3，Zhang Tian-xiang，Wang Xiao-hua2，Zhen Huai-bin1，Zhu Wei-ping3   

  1. 1.Zhonglian CBM State Engineering Research Center Co.Ltd.，Beijing 100089，China；
    2.School of Petroleum Engineering，China University of Petroleum(Beijing)，Beijing 102249，China；
    3.Coalbed Methane Co.Ltd.，PetroChina，Beijing 100028，China
  • Received:2018-10-20 Revised:2019-01-13 Online:2019-04-10

PDF (PC)

184

摘要： 基于多层水力压裂三维模型，采用MFrac软件数值模拟求得裂缝形态和导流能力，结合模糊数学综合评判和专家估测加权法，考虑煤系地层各层物性和生产特性，优化了煤系多层合压射孔层位和射孔段高度。研究发现，射孔层位决定能否实现煤系多层合压，射孔段高度决定合压效果好坏。提出射孔层位优选的原则：射孔层位应避免煤层或在煤层少射孔，以降低煤层裂缝的过度优势扩展；对高应力层段适当射孔，以保证合压施工顺利和合压效果；考虑到支撑剂的重力沉降，合压裂缝尽可能从合压层段上部起裂；在满足前3个原则的基础上，尽可能以最大的射孔密度射开目的储层，增加目的储层压裂效果。认为通过射孔方案的加权优化，可保证煤层具有更高的裂缝面积导流能力。研究结果为煤系气共采多层合压射孔优化设计提供了新的方法和依据。

关键词: 煤系地层, 多层合压, 射孔优化, 模糊综合评判, 三气共采, 射孔层位

Abstract: Based on the 3D fracture model of multilayer hydraulic fracturing，the fracture morphology and conductivity were obtained by MFrac software.The expert-based weighting method was used to consider the strata physical properties and production characteristics in coal measures.Combined with the fuzzy synthetic evaluation method，the optimizing method of perforated interval and perforation length of multiple layers commingled fracturing was proposed.We found that perforation interval determines whether the multilayer combined fracturing of the coal measures can be achieved，and the perforated length decides the quality of the multilayer fracturing effect.Several optimization principles of perforated interval were proposed.In order to reduce the excessive advantage of crack propagation in the coal seam，the perforation horizon should be avoided in the coalbed，or a small amount of perforation is perforated in the coal seam；The appropriate perforation should be applied to the high-stress interval to ensure the normal fracturing construction and the high fracturing effect；Taking into account the sediment gravity of the proppant，the fracturing crack should be as much as possible initiate from the upper part of the commingled fracturing sections；On the basis of the previous three points，the target reservoirs should be perforated as much as possible to increase the fracturing effect.We consider that the coal seam should have a high crack-area-conductivity through the weighted method.The study results can provide a new method and basis for the perforation optimization of the multilayer combined fracturing in coal measure strata.

Key words: Coal measure strata, Multilayer commingled fracturing, Perforation optimization, Fuzzy synthetic evaluation method, Unconventional gas co-exploration, Perforation interval

中图分类号: 

  • TE377
［1］Liang Bing，Shi Yingshuang，Sun Weiji，et al.Reservoir forming characteristics of “the three gases” in coal measure and the possibility of commingling in China[J].Journal of China Coal Society，2016，41(1):167-173.<br /> 梁冰，石迎爽，孙维吉，等.中国煤系“三气”成藏特征及共采可能性[J].煤炭学报，2016，41(1):167-173.<br /> [2]Qin Yong，Shen Jian，Shen Yulin.Joint mining compatibility of superposed gas-bearing systems:A general geological problem for extraction of three natural gases and deep CBM in coal series[J].Journal of China Coal Society，2016，41(1):14-23.<br /> 秦勇，申建，沈玉林.叠置含气系统共采兼容性——煤系“三气”及深部煤层气开采中的共性地质问题[J].煤炭学报，2016，41(1):14-23.<br /> [3]He Jinxian，Zhang Xiaoli，Yan Jinpeng，et al.Resource potential for co-exploration and joint exploitation on unconventional gas in coal measures in China[J].Open Fuels and Energy Science Journal，2015，8(1):361-367.<br /> [4]He Jinxian，Zhang Xiaoli，Ma Li，et al.Geological characteristics of unconventional gas in coal measure of Upper Paleozoic coal measures in Ordos Basin，China[J].Earth Sciences Research Journal，2016，20(1):1-5.<br /> [5]Hou Xiaowei，Zhu Yanming，Fu Changqing，et al.Fractures distribution of Qinshui Basin and its indicative significance to unconventional gas  co-exploration in coal measures[J].Journal of China University of Mining & Technology，2016，45(4):729-738.<br /> 侯晓伟，朱炎铭，付常青，等.沁水盆地压裂裂缝展布及对煤系“三气”共采的指示意义[J].中国矿业大学学报，2016，45(4):729-738.<br /> [6]Zhang Zheng，Qin Yong，Bai Jianping，et al.Evaluation of favorable regions for multi-seam coalbed methane joint exploitation based on a fuzzy model:A case study in southern Qinshui Basin，China[J].Energy Exploration and Exploitation，2016，34(3):400-417.<br /> [7]Usman Ahmed，Thompson T W，Sharad Kelkar，et al.Perforation placement optimization:A modified hydraulic fracturing technique[J].Society of Petroleum Engineers of American Institute of Mining，Metallurgical and Petroleum Engineers.Papalexandrou；(United States)，SPE 12841，1984.<br /> [8]Ao Xianshu，Cao Liwen，Jia Jinlong，et al.Study on optimization method of coalbed methane commingled development layer section in Songhe mine field，west Guizhou[J].Coal Science and Technology，2016，44(2):68-72.<br /> 敖显书，曹丽文，贾金龙，等.黔西松河井田煤层气合层开发层段优选方法研究[J].煤炭科学技术，2016，44(2):68-72.<br /> [9]Yi Tongsheng，Zhou Xiaozhi，Jin Jun.Reservoir formation characteristics and co-exploration and concurrent production technology of Longtan coal measure coalbed methane and tight gas in Songhe field western Guizhou[J].Journal of China Coal Society，2016，41(1):212-220.<br /> 易同生，周效志，金军.黔西松河井田龙潭煤系煤层气-致密气成藏特征及共探共采技术[J].煤炭学报，2016，41(1):212-220.<br /> [10]Li Fuwen，Ye Qinyou，Xu Jianguo，et al.Redetermination of perforated  interval length in horizontal well of Jilin Oilfield[J].Drilling and Production Technology，2008，31(3):73-74.<br /> 李福文，叶勤友，许建国，等.吉林油田水平井射孔段长度确定[J].钻采工艺，2008，31(3):73-74.<br /> [11]Zhang Tao，Wang Yubin，Hu Guangjun，et al.Effect of perforation parameters on hydraulic fracturing[J].Drilling and Production Technology，2010，33(2):44-47.<br /> 张涛，王玉斌，胡广军，等.射孔参数对水力压裂效果的影响实例分析[J].钻采工艺，2010，33(2):44-47.<br /> [12]Shen Yinghao，Ge Hongkui，Cheng Yuanfang，et al.Algorithm renew  study of hydraulic fracture pseudo-three dimensional model[J].Science Technology and Engineering，2014，14(26):219-223.<br /> 申颍浩，葛洪魁，程远方，等.水力压裂拟三维模型数值求解新方法[J].科学技术与工程，2014，14(26):219-223.<br /> [13]Kaveh Amini，Mohamed Y Soliman，Waylon House.A three- dimensional thermal model for hydraulic fracturing[C]//SPE Annual Technical Conference and Exhibition.Society of Petroleum Engineers，2015.<br /> [14]Chen Mian，Jin Yan，Zhang Guangqing.Petroleum Engineering Rock  Mechanics[M].Beijing:Science Press，2008:181-195.<br /> 陈勉，金衍，张广清.石油工程岩石力学[M].北京:科学出版社，2008:181-195.<br /> [15]Liu Jianjun，Feng Xiating，Fei Guihong.Study on mathematical model  of three dimensional hydraulic fracturing[J].Chinese Journal of Rock Mechanics and Engineering，2003，22(12):2042-2046.<br /> 刘建军，冯夏庭，裴桂红.水力压裂三维数学模型研究[J].岩石力学与工程学报，2003，22(12):2042-2042.<br /> [16]Rodney A.Clifton，Ahmed S.Abou-Sayed.A variational approach to the prediction of the three-dimensional geometry of hydraulic fractures[C]//SPE/DOE Low Permeability Gas Reservoirs Symposium.Society of Petroleum Engineers，1981.<br /> [17]Zhao Jinzhou，Peng Yu，Li Yongming，et al.A pseudo 3D fracture propagation model with consideration of vertical flow resistance[J].Journal of China University of Petroleu<br /> m:Science Edition，2016，40(1):69-78.<br /> 赵金洲，彭瑀，李勇明，等.考虑垂向摩阻的裂缝拟三维延伸模型[J].中国石油大学学报：自然科学版，2016，40(1):69-78.<br /> [18]Ahn，Chong Hyun，Robert Wang，et al.Modeling of hydraulic fracture propagation in shale gas reservoirs:A three-dimensional，two-phase model[J].Journal of Energy Resources Technology，2017，139(1):457-463.<br /> [19]Palmer I D.Three-dimensional hydraulic fracture propagation in the presence of stress variations[J].Society of Petroleum Engineers Journal，1983，23(6):870-878.<br /> [20]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<br /> 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.<br /> [21]Cao Ruilang，He Shaohui，Guo Yanwei，et al.Fuzzy-synthetical evaluation method on the system of geological strength index[J].Chinese Journal of Rock Mechanics and Engineering，2013，32(supplement 2):3100-3108.<br /> 曹瑞琅，贺少辉，郭炎伟，等.地质强度指标的模糊综合评判法[J].岩石力学与工程学报，2013，32(增刊2):3100-3108.<br /> [22]Zhu Zhaoqun，Lin Chengyan，Zhang Sujie，et al.Application of  improved fuzzy-grey comprehensive evaluation method to quantitative reservoir evaluation:A case study of the low-permeability gas reservoirs of the lower part of 8th member of the Shihezi Formation in Su X block of Sulige Gasfield[J].Oil and Gas Geology，2017，38(1):197-208.<br /> 朱兆群，林承焰，张苏杰，等.改进的模糊—灰色综合评判方法在储层定量评价中的应用——以苏里格气田苏X井区盒8下亚段低渗透气藏为例[J].石油与天然气地质，2017，38(1):197-208.<br />
[1] 张博, 袁文芳, 曹少芳, 秦红, 魏燕萍, 赵新艳, 王忠武. 库车坳陷大北地区砂岩储层裂缝主控因素的模糊评判[J]. 天然气地球科学, 2011, 22(2): 250-253.
[2] 张锦伟, 赵志刚, 梁建设. 利用地震地质资料综合研究X凹陷煤系地层分布[J]. 天然气地球科学, 2011, 22(1): 157-163.
[3] 廖前进;于学敏;何咏梅;刘晓军;. 大港探区上古生界煤系烃源岩特征及资源潜力[J]. 天然气地球科学, 2003, 14(4): 250-253.
[4] Н.Н.聂姆钦科; А.С.罗芙西施卡娅; М.绍叶尔; 史斗（译）. 西西伯利亚北部超大型气藏天然气成因[J]. 天然气地球科学, 2001, 12(4-5): 30-39.
[5] 王世谦； . 煤系地层陆源有机质生油性的重新评定[J]. 天然气地球科学, 1993, 4(1): 40-47.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!