The Evaluation and Application of Engineering Sweet Spots in a Horizontal Well in the Fuling Shale Gas Reservoir
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摘要: 针对涪陵页岩气水平井多段分簇射孔压裂时加砂量符合率低、产气量低的问题,提出了寻找水平段工程甜点、并结合地质甜点进行压裂优化设计的方法。首先利用声波时差和密度测井资料,拟合得到涪陵页岩气藏横波时差计算模型,再结合密度、自然伽马等测井资料,利用地应力剖面计算软件求取涪陵页岩气藏水平井水平段的岩石力学参数,然后通过分析已压裂井段产气剖面测试结果与岩石力学参数的相关性,得到涪陵页岩气藏工程甜点参数为:水平应力差小于8 MPa、脆性指数0.45~0.50。焦页30-1HF井采用了工程甜点与地质甜点相结合的压裂设计方法,其压裂施工压力平稳,总液量和总砂量符合率较好,压后无阻流量88.54×104 m3/d,取得了较好的增产效果。现场试验表明,工程甜点与地质甜点相结合的压裂设计方法,能够提高涪陵页岩气水平井压裂的加砂量符合率和产气量,有助于实现页岩气的高效开发。Abstract: Due to the fact that shale gas reservoirs possess heterogeneity, sectional perforation and multi-stage fracturing in horizontal wells in the reservoir may generate very different effects. The engineering sweet spot parameter can affect the crack initiation, extension and reconstruction of hydraulic fractures. Accordingly, the parameter can be used to guide the sectional perforation of shale gas horizontal wells, which can be helpful in improving the reservoir and productivity. With the P-wave transit time and density logging data, the calculation model of S-wave transit time was established for the Fuling shale gas reservoir, and the calculation method of determining the engineering sweet spot was defined for the Fuling shale gas reservoir based on the experimental results of rock mechanics. Combined with the test results for 73 gas production sections in six wells, including Well Jiaoye 7-1HF, the evaluation indicators for the engineering sweet spot in the Fuling shale gas reservoir were summarized, namely, that the horizontal stress difference was less than 8MPa, and the brittleness index ranged from 45% to 50%. Optimum design for fracturing the Well Jiaoye 30-1HF was conducted based on the engineering sweet spot data, and then total liquid volume and total sand content were matched well with stable operation pressure. Post-frac open flow was 88.54×104 m3/d, and better stimulation results were achieved.
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Keywords:
- shale gas /
- horizontal well /
- section fracturing /
- engineering sweet spot /
- log data /
- brittleness index /
- Well Jiaoye 30-1HF
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[1] NUTTALL B C,DRAHOVZAL J A,EBLE C F,et al.Analysis of the Devonian black shale in Kentucky for potential carbon dioxide sequestration and enhanced natural gas production[R].Lexington:Kentucky Geological Survey,2005.
[2] FRANTZ J H Jr.White paper:shale gas[R].Houston:Schlumberger,2005.
[3] JARVIE D M,HILL R J,POLLASTRO R M,et al.Evaluation of hydrocarbon generation and storage in the Barnett Shale,Ft Worth Basin,Texas:Barnett Shale and other Fort Worth Basin Plays Ellison Miles Memorial Symposium,Texas,June 22-23,2004[C].
[4] 牛新明.涪陵页岩气田钻井技术难点及对策[J].石油钻探技术,2014,42(4):1-6. NIU Xinming.Drilling technology challenges and resolutions in Fuling Shale Gas Field[J].Petroleum Drilling Techniques,2014,42(4):1-6. [5] 葛洪魁,王小琼,张义.大幅度降低页岩气开发成本的技术途径[J].石油钻探技术,2013,41(6):1-5. GE Hongkui,WANG Xiaoqiong,ZHANG Yi.A technical approach to reduce shale gas development cost[J].Petroleum Drilling Techniques,2013,41(6):1-5. [6] 周德华,焦方正,贾长贵,等.JY1HF页岩气水平井大型分段压裂技术[J].石油钻探技术,2014,42(1):75-80. ZHOU Dehua,JIAO Fangzheng,JIA Changgui,et al.Large-scale multi-stage hydraulic fracturing technology for shale gas horizontal Well JY1HF[J].Petroleum Drilling Techniques,2014,42(1):75-80. [7] 曾义金.页岩气开发的地质与工程一体化技术[J].石油钻探技术,2014,42(1):1-6. ZENG Yijin.Integration technology of geology engineering for shale gas development[J].Petroleum Drilling Techniques,2014,42(1):1-6. [8] 邵尚奇,田守嶒,李根生,等.泥页岩地层水力裂缝延伸方位研究[J].石油钻探技术,2014,42(3):27-31. SHAO Shangqi,TIAN Shouceng,LI Gensheng,et al.Propagating orientation of hydraulic fractures in muddy shale formation[J].Petroleum Drilling Techniques,2014,42(3):27-31. [9] 蒋廷学,卞晓冰,苏瑗,等.页岩可压性指数评价新方法及应用[J].石油钻探技术,2014,42(5):16-20. JIANG Tingxue,BIAN Xiaobing,SU Yuan,et al.A new method for evaluating shale fracability index and its application[J].Petroleum Drilling Techniques,2014,42(5):16-20. [10] 李玉梅,李军,柳贡慧,等.页岩气藏水平井水力压裂裂缝敏感参数数值分析[J].断块油气田,2015,22(2):258-262. LI Yumei,LI Jun,LIU Gonghui,et al.Numerical analysis of fracture sensitive parameters in a hydraulically fractured horizontal well in layered shale reservoir[J].Fault-Block Oil Gas Field,2015,22(2):258-262. [11] 陈勉,葛洪魁,赵金洲,等.页岩油气高效开发的关键基础理论与挑战[J].石油钻探技术,2015,43(5):7-14. CHEN Mian,GE Hongkui,ZHAO Jinzhou,et al.The key fundamentals for the efficient exploitation of shale oil and gas and its related challenges[J].Petroleum Drilling Techniques,2015,43(5):7-14. [12] 杨恒林,申瑞臣,付利.含气页岩组分构成与岩石力学特性[J].石油钻探技术,2013,41(5):31-35. YANG Henglin,SHEN Ruichen,FU Li.Composition and mechanical properties of gas shale[J].Petroleum Drilling Techniques,2013,41(5):31-35. -
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