The flow and deliverability in tight oil reservoir after explosive fracturing

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  • 1.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu 610500,China;
    2.Engineering Technology Research Institute of Xinjiang Oilfield Company,Karamay 834000,China;
    3.PetrolChina Tarim Oilfield Company Development Department,Korla 841000,China

Received date: 2015-10-09

  Revised date: 2015-12-10

  Online published: 2019-09-19

Abstract

In consideration of the matrix,fracture network and main fracture coupling flow under the threshold pressure gradient and the pressure sensitive effect,on the basis of the fractal tree-like theory,a non-linear steady productivity prediction model was established for hydraulic fracture well after exploration.The computational results show that,compared with the conventional hydraulic fracturing,such a well in tight oil reservoir,getting 1.5 times productivity,possesses evident superiority.The permeability in explosive zone is in proportion with pore fractal dimension Df,while inversely with tortuosity dimension Dt and bifurcation angel θ.The pore fractal dimension Df and the tortuosity dimension Dt have little influence on stimulation ratio.Due to the main effect of the explosive fracture length on stimulation ratio,dynamites,with low energy release rate or multistage reaction rate,should be chosen to minish bifurcation angel and magnify facture volume.

Cite this article

Yang Zhao-zhong, Huang Xin, Qin Zhao-yong, Lei Teng-jiao, Yi Liang-ping . The flow and deliverability in tight oil reservoir after explosive fracturing[J]. Natural Gas Geoscience, 2016 , 27(6) : 1092 -1100 . DOI: 10.11764/j.issn.1672-1926.2016.06.1092

References

[1]Zou Caineng,Zhang Guangya,Tao Shizhen,et al.Geological features,major discoveries and unconventional petroleum geology in the global petroleum exploration[J].Petroleum Exploration & Development,2010,37(2):129-145.[邹才能,张光亚,陶士振,等.全球油气勘探领域地质特征、重大发现及非常规石油地质[J].石油勘探与开发,2010,37(2):129-145.]
[2]Liang Xing,Ye Xi,Zhang Jiehui,et al.Reservoir forming conditions and favorable exploration zones of shale gas in the Weixin Sag,Dianqianbei Depression[J].Petroleum Exploration and Development,2011,38(6):693-699.[梁兴,叶熙,张介辉,等.滇黔北坳陷威信凹陷页岩气成藏条件分析与有利区优选[J].石油勘探与开发,2012,38(6):693-699.]
[3]Peng Hui,Liu Yuzhang,Ran Qiquan,et al.Study on the horizontal well production in tight oil reservoirs[J].Natural Gas Geoscience,2014,25(5):771-777.[彭晖,刘玉章,冉启全,等.致密油储层水平井产能影响因素研究[J].天然气地球科学,2014,25(5):771-777.]
[4]Ma Xu,Hao Ruifen,Lai Xuanang,et al.Field test of volume fracturing for horizontal wells in Sulige tight sandstone gas reservoirs[J].Petroleum Exploration and Development,2014,41(5):1-6.[马旭,郝瑞芬,来轩昂,等.苏里格气田致密砂岩气藏水平井体积压裂矿场试验[J].石油勘探与开发,2014,41(5):1-6.]
[5]Nobakht M,Clarkson C R,Kaviani D.New and Improved Methods for Performing Rate-transient Analysis of Shale Gas Reservoirs[C].SPE Asia Pacific Oil and Gas Conference and Exhibition,20-22 September,Jakarta:Indonesia.SPE147869,2012.
[6]Ding Yanshen,Chen Li,Xie Xie,et al.On the stimulation with exploding in fractures in low permeability reservoirs[J].Petroleum Exploration and Development,2001,28(2):90-96.[丁雁生,陈力,谢燮,等.低渗透油气田“层内爆炸”增产技术研究[J].石油勘探与开发,2001,28(2):90-96.]
[7]Weng Dingwei,Zhang Qihan,Lu Yongjun,et al.Study and application on improving hydraulic fracture complexity in sandstone reservoir[J].Natural Gas Geoscience,2014,25(7):1085-1089.[翁定为,张启汉,卢拥军,等 提高砂岩储层人工裂缝复杂度的压裂技术及其应用[J].天然气地球科学,2014,25(7):1085-1089.]
[8]Chen Dechun,Huang Xinchun,Zhang Qi,et al.Evaluation of productivity model for hydraulic fracturing wells with exploding in fracture front by electricity similarity experiment[J].Journal of China University of Petroleum:Edition of Natural Sciences,2006,30(5):71-73.[陈德春,黄新春,张琪,等.水力裂缝层内爆燃压裂油井产能模型电模拟实验评价[J].中国石油大学学报:自然科学版,2006,30(5):71-73.]
[9]Meng Hongxia,Guo Qing,Chen Dechun,et al.Productivity evaluation of explosive fracturing well within the hydraulic fractured formation[J].Drilling and Production Technology,2007,30(3):72-75.[孟红霞,郭清,陈德春,等.水力裂缝层内爆燃油井产能评价与分析[J].钻采工艺,2007,30(3):72-75.]
[10]Cao Zhe,Liu Guangdi,Liu Zhuangxiaoxue,et al.Research status on tight oil and its prospect[J].Natural Gas Geoscience,2014,25(10):1499-1508.[曹喆,柳广弟,柳庄小雪,等.致密油地质研究现状及展望[J].天然气地球科学,2014,25(10):1499-1508.]
[11]Liang Liping,Cai Mingjin,Jia Yonglu.Rate decline law for vertical fracture wells in low permeability reservoir[J].Natural Gas Geoscience,2012,23(4):770-774.[梁利平,蔡明金,贾永禄.低渗透油藏压裂井产量递减规律分析[J].天然气地球科学,2012,23(4):770-774.]
[12]Cheng Qigui,Lei Qihong,Xiong Weiliang.Theory and technology of effective displacement pressure system of tight oil reservoir[J].Natural Gas Geoscience,2012,23(3):570-576.[程启贵,雷启鸿,熊维亮.致密油藏有效驱替压力系统建立理论与技术[J].天然气地球科学,2012,23(3):570-576.]
[13]Zhao Zhihong,Guo Jianchun.Interlayer explosive fracturing principle and analysis[J].Journal of Oil and Gas Technology,2008,30(2):297-299.[赵志红,郭建春.层内爆炸压裂技术原理及分析[J].石油天然气学报,2008,30(2):297-299.]
[14]Zhang Zongxian,Yu Jie.Effect of loading rates on macro-crack bifurcation of rock[J].Journal of University of Science and Technology Beijing,1995,17(2):112-115.[张宗贤,俞洁.岩石宏观裂纹分叉的加载率效应[J].北京科技大学学报,1995,17(2):112-115.][JP3]
[15]Wheatcraft S W,Tyler S W.An explanation of scale-dependent dispersivity in heterogeneous aquifers using concepts of fractal geometry[J].Water Resource Researches,1988,24(4):566-578.
[16]Li Xiaogang,Su Zhou,Yang Zhaozhong,et al.Development of stimulated reservoir volume in shale[J].Journal of Oil and Gas Technology,2014,36(7):154-159.[李小刚,苏洲,杨兆中,等.页岩气储层体积缝网压裂技术新进展[J].石油天然气学报,2014,36(7):154-159.]
[17]Chen Jun.An Investigation on the Fractal-like Tree Networks for the Effetive Permeability[D].Wuhan:Huazhong University of science and Technology,2007:23-28.[陈俊.类分形树状网络有效渗透率的研究[D].武汉:华中科技大学,2007:23-28.]
[18]Xu Peng.Transport Properties of Fractal Tree-like Branching Network[D].Wuhan:Huazhong University of Science and Technology,2008:23-26.[徐鹏.树状分形分叉网络的输运特性[D].武汉:华中科技大学,2008:23-26]
[19]Yu Boming.Advances of fractal analysis of transport properties for porous media[J].Advances in Cell Mechanics,2003,33(3):333-346.[郁伯铭.多孔介质输运性质的分形分析研究进展[J].力学进展,2003,33(3):333-346.]
[20]Wei Yi,Song Xinmin,Ran Qiquan.An unstable productivity prediction model for fractured horizontal well in tight oil reservoirs[J].Xinjiang Petroleum Geology,2014,35(1):67-72.[魏漪,宋新民,冉启全,等.致密油藏压裂水平井非稳态产能预测模型[J].新疆石油地质,2014,35(1):67-72.]

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