马56区块致密油藏“缝控”体积压裂技术
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摘要
马56区块致密油藏采用水平井体积压裂开发技术后,仍有大量的地质储量无法得到有效动用,整体采收率只有3%。为了进一步提高区内储层采收率,配套形成井网加密、长水平段钻井、交错布缝、缩短簇间距、增加分簇数、提高排量、提高细砂比例的井网及裂缝双加密"缝控"体积压裂技术,通过人工裂缝对储层的全覆盖来实现提高储层动用程度以及单井产量的目的。现场应用41井次,有效率100%,平均单井日产油26.2 t,较前期基础井网体积压裂效果提高36.7%～65.8%,增产效果明显,为研究区块致密油藏提高单井产量提供了技术支撑。
Although the tight oil reservoir of the Ma56 block already used the development technology of horizontal well volume fracturing,there is still a large amount of geological reserves that cannot be effectively utilized,and the overall recovery rate is only 3%. In order to further improve the reservoir recovery in the block,this paper developed a‘fracture controlled'volume fracturing technology of infilled well pattern and fractures based on infilled well pattern,the long horizontal section,staggered fracturing,shortening cluster spacing,increasing clustering number,increasing displacement and increasing the proportion of fine sand. Through the full coverage of the reservoir by artificial fractures,the purpose of improving reservoir utilization and single well production is achieved. The technology has been applied in the field for 41 times. The results show that the efficiency can reach 100%,and the average single-well daily oil production is 26. 2 t,which is 36. 7%-65. 8% higher than the previous volume fracturing of basic well pattern. These effects fully prove that this technology can provide technical support for improving the single well production of tight reservoirs.
Although the tight oil reservoir of the Ma56 block already used the development technology of horizontal well volume fracturing,there is still a large amount of geological reserves that cannot be effectively utilized,and the overall recovery rate is only 3%. In order to further improve the reservoir recovery in the block,this paper developed a‘fracture controlled'volume fracturing technology of infilled well pattern and fractures based on infilled well pattern,the long horizontal section,staggered fracturing,shortening cluster spacing,increasing clustering number,increasing displacement and increasing the proportion of fine sand. Through the full coverage of the reservoir by artificial fractures,the purpose of improving reservoir utilization and single well production is achieved. The technology has been applied in the field for 41 times. The results show that the efficiency can reach 100%,and the average single-well daily oil production is 26. 2 t,which is 36. 7%-65. 8% higher than the previous volume fracturing of basic well pattern. These effects fully prove that this technology can provide technical support for improving the single well production of tight reservoirs.
引文
[1]杜金虎,何海清,杨涛,等.中国致密油勘探进展及面临的挑战[J].中国石油勘探,2014,19(1):1-9.DU Jinhu,HE Haiqing,YANG Tao et al.Progress in China’s tight oil exploration and challenges[J].China Petroleum Exploration,2014,19(1):1-9.
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[7]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.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.
[8]李海涛,卢宇,谢斌,等.水平井多段分簇射孔优化设计[J].特种油气藏,2016,23(3):133-135.LI Haitao1,LU Yu,XIE Bin et al.Multi-stage clustering preformation optimization in horizontal well[J].Special Oil and Gas Reservior,2016,23(3):133-135.
[9]陈铭,胥云,吴奇,等.水平井体积改造多裂缝扩展形态算法---不同布缝模式的研究[J].天然气工业,2016,36(8):79-87.CHEN Ming,XU Yun,WU Qi et al.Algorithm for multifracture propagation morphology in horizontal well volume fracturing:Investigation on different fracture distribution patterns[J].Natural Gas Industry,2016,36(8):79-87.
[10]郭鹏,姚磊华,任德生,等.体积压裂裂缝分布扩展规律及压裂效果分析---以鄂尔多斯盆地苏53区块为例[J].科学技术与工程,2015,15(24):46-51.GUO Peng,YAO Leihua,REN Desheng et al.Fracture distribution and propagation laws and effect analysis of volume fracturing in the Su 53 Block,Ordos basin[J].Science Technology and Engineering,2015,15(24):46-51.
[11]贾婷,何强,孙明,等.致密油区体积压裂效果分析[J].西安文理学院学报(自然科学版),2017,20(2):113-116.JIA Ting,HE Qiang,SUN Ming et al.Analysis of volume fracturing effect in dense oil region[J].Journal of Xi'an U-niversity(Natural Science Edition),2017,20(2):113-116.
[12]曲占庆,黄德胜,毛登周,等.基于灰色关联法的低渗气藏压裂效果影响因素分析[J].西北大学学报(自然科学版),2014,44(4):603-609.QU Zhanqing,HUANG Desheng,MAO Dengzhou et al.The influencing factors of fracturing effects in low permeability gas reservoir with gray correlation method[J].Journal of Northwest University(Natural Science Edition),2014,44(4):603-609.
[13]TANMAY M SONI.LPG-Based fracturing:An alternate fracturing technique in shale reservoirs[C].SPE 170542,2014.
[14]杨凯.裂缝性低渗透油藏注水吞吐开发影响因素分析[J].特种油气藏,2010,17(2):82-84.YANG Kai.Influencing factors of water flooding development for fractured low-permeability reservoir[J].Special Oil and Gas Reservoir,2010,17(2):82-84.
[15]吴双,刘平礼,罗志峰,等.致密油储层改造的难点及工艺技术措施[J].重庆科技学院学报,2014,16(6):85-87.WU Shuang,LIU Pingli,LUO Zhifeng et al.Difficulties and technical measures of fracturing reconstruction in tight oil reservoirs[J].Journal of Chongqing Science and Technology Col1ege(Natural Science Edition),2014,16(6):85-87.
[16]郑立军,才博,冉凤华,等.致密油储层改造技术研究与应用[J].油气井测试,2015,24(1):4-7.ZHENG Lijun,CAI Bo,RAN Fenghua et al.Research on transformation technology of tight oil reservoir and its application[J].Well Testing,2015,24(1):4-7.
[17]RICKMAN R,MULLEN M,PETRE E et al.A practical use of shale petrophysics for stimulation design optimization:all shale plays are not clones of the Barnett shale[C].SPE 115258,2008.
[18]KING G E.Thirty years gas shale fracturing:What have we learned[C].SPE 133456,2010.
[19]李向平,齐银,李转红,等.鄂尔多斯盆地安83区块致密油藏老井暂堵混合水体积压裂技术[J].油气地质与采收率,2016,23(6):120-126.LI Xiangping,QI Yin,LI Zhuanhong et al.Temporary plugging and mixed water volume fracturing technology of tight oil reservoirs in An83 block,Ordos basin[J].Petroleum Geology and Recovery Efficiency,2016,23(6):120-126.
[20]金成志,杨东,张永平,等.松辽盆地北部非均质致密油水平井增产改造设计优化技术[J].中国石油勘探,2014,19(6):40-46.JIN Chengzhi,YANG Dong,ZHANG Yongping et al.Optimization techniques for stimulation design of horizontal wells of heterogeneous tight oil in northern Songliao basin[J].China Petroleum Exploration,2014,19(6):40-46.
[21]曲占庆,曲冠政,何利敏,等.压裂水平井裂缝分布对产能影响的电模实验[J].天然气工业,2013,33(10):52-57.QU Zhanqing,QU Guanzheng,HE Limin et al.The impact of fracture distribution on the productivity of a fractured horizontal well:A study based on electrolytic analogy experiments[J].Natural Gas Industry,2013,33(10):52-57.
[22]陈作,薛承瑾,蒋廷学,等.页岩气井体积压裂技术在我国的应用建议[J].天然气工业,2010,30(10):30-32.CHEN Zuo,XUE Chengjin,JIANG Tingxue et al.Proposals for the application of fracturing by stimulated reservoir volume(SRV)in shale gas wells in China[J].Natural Gas Industry,2010,30(10):30-32.
[2]向洪.三塘湖盆地马56区块致密油重复压裂实践[J].特种油气藏,2017,24(6):157-160.XIANG Hong.Refracturing practice of tight oil reservoirs in Ma 56 block,the Santanghu basin[J].Special Oil and Gas Reservior,2017,24(6):157-160.
[3]杜洪凌,许江文,李峋,等.新疆油田致密砂砾岩油藏效益开发的发展与深化---地质工程一体化在玛湖地区的实践与思考[J].中国石油勘探,2018,23(2):15-26.DU Hongling,XU Jiangwen,LI Xun et al.Development and deepening of proftable development of tight glutenite oil reservoirs in Xinjiang oilfield:Application of geology-engineering integration in Mahu area and its enlightenment[J].China Petroleum Exploration,2018,23(2):15-26.
[4]张映红,路保平,陈作,等.中国陆相致密油开采技术发展策略思考[J].石油钻探技术,2015,43(1):1-6.ZHANG Yinghong,LU Baoping,CHEN Zuo et al.Technical strategy thinking for developing continental tight oil in China[J].Petroleum Drilling Techniques,2015,43(1):1-6.
[5]梁浩,李新宁,马强,等.三塘湖盆地条湖组致密油地质特征及勘探潜力[J].石油勘探与开发,2014,41(5):563-572.LIANG Hao,LI Xinning,MA Qiang et al.Geological features and exploration potential of permian Tiaohu formation tight oil,Santanghu basin,NW China[J].Petroleum Exploration and Dvelopment,2014,41(5):563-572.
[6]崔宝文,林铁峰,董万百,等.松辽盆地北部致密油水平井技术及勘探实践[J].大庆石油地质与开发,2014,33(5):16-22.CUI Baowen,LIN Tiefeng,DONG Wanbai et al.Horizontal well techniques and their exploration practices in the tight oil reservoirs in north Songliao basin[J].Petroleum Geology and Oilfield Development in Daqing,2014,33(5):16-22.
[7]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.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.
[8]李海涛,卢宇,谢斌,等.水平井多段分簇射孔优化设计[J].特种油气藏,2016,23(3):133-135.LI Haitao1,LU Yu,XIE Bin et al.Multi-stage clustering preformation optimization in horizontal well[J].Special Oil and Gas Reservior,2016,23(3):133-135.
[9]陈铭,胥云,吴奇,等.水平井体积改造多裂缝扩展形态算法---不同布缝模式的研究[J].天然气工业,2016,36(8):79-87.CHEN Ming,XU Yun,WU Qi et al.Algorithm for multifracture propagation morphology in horizontal well volume fracturing:Investigation on different fracture distribution patterns[J].Natural Gas Industry,2016,36(8):79-87.
[10]郭鹏,姚磊华,任德生,等.体积压裂裂缝分布扩展规律及压裂效果分析---以鄂尔多斯盆地苏53区块为例[J].科学技术与工程,2015,15(24):46-51.GUO Peng,YAO Leihua,REN Desheng et al.Fracture distribution and propagation laws and effect analysis of volume fracturing in the Su 53 Block,Ordos basin[J].Science Technology and Engineering,2015,15(24):46-51.
[11]贾婷,何强,孙明,等.致密油区体积压裂效果分析[J].西安文理学院学报(自然科学版),2017,20(2):113-116.JIA Ting,HE Qiang,SUN Ming et al.Analysis of volume fracturing effect in dense oil region[J].Journal of Xi'an U-niversity(Natural Science Edition),2017,20(2):113-116.
[12]曲占庆,黄德胜,毛登周,等.基于灰色关联法的低渗气藏压裂效果影响因素分析[J].西北大学学报(自然科学版),2014,44(4):603-609.QU Zhanqing,HUANG Desheng,MAO Dengzhou et al.The influencing factors of fracturing effects in low permeability gas reservoir with gray correlation method[J].Journal of Northwest University(Natural Science Edition),2014,44(4):603-609.
[13]TANMAY M SONI.LPG-Based fracturing:An alternate fracturing technique in shale reservoirs[C].SPE 170542,2014.
[14]杨凯.裂缝性低渗透油藏注水吞吐开发影响因素分析[J].特种油气藏,2010,17(2):82-84.YANG Kai.Influencing factors of water flooding development for fractured low-permeability reservoir[J].Special Oil and Gas Reservoir,2010,17(2):82-84.
[15]吴双,刘平礼,罗志峰,等.致密油储层改造的难点及工艺技术措施[J].重庆科技学院学报,2014,16(6):85-87.WU Shuang,LIU Pingli,LUO Zhifeng et al.Difficulties and technical measures of fracturing reconstruction in tight oil reservoirs[J].Journal of Chongqing Science and Technology Col1ege(Natural Science Edition),2014,16(6):85-87.
[16]郑立军,才博,冉凤华,等.致密油储层改造技术研究与应用[J].油气井测试,2015,24(1):4-7.ZHENG Lijun,CAI Bo,RAN Fenghua et al.Research on transformation technology of tight oil reservoir and its application[J].Well Testing,2015,24(1):4-7.
[17]RICKMAN R,MULLEN M,PETRE E et al.A practical use of shale petrophysics for stimulation design optimization:all shale plays are not clones of the Barnett shale[C].SPE 115258,2008.
[18]KING G E.Thirty years gas shale fracturing:What have we learned[C].SPE 133456,2010.
[19]李向平,齐银,李转红,等.鄂尔多斯盆地安83区块致密油藏老井暂堵混合水体积压裂技术[J].油气地质与采收率,2016,23(6):120-126.LI Xiangping,QI Yin,LI Zhuanhong et al.Temporary plugging and mixed water volume fracturing technology of tight oil reservoirs in An83 block,Ordos basin[J].Petroleum Geology and Recovery Efficiency,2016,23(6):120-126.
[20]金成志,杨东,张永平,等.松辽盆地北部非均质致密油水平井增产改造设计优化技术[J].中国石油勘探,2014,19(6):40-46.JIN Chengzhi,YANG Dong,ZHANG Yongping et al.Optimization techniques for stimulation design of horizontal wells of heterogeneous tight oil in northern Songliao basin[J].China Petroleum Exploration,2014,19(6):40-46.
[21]曲占庆,曲冠政,何利敏,等.压裂水平井裂缝分布对产能影响的电模实验[J].天然气工业,2013,33(10):52-57.QU Zhanqing,QU Guanzheng,HE Limin et al.The impact of fracture distribution on the productivity of a fractured horizontal well:A study based on electrolytic analogy experiments[J].Natural Gas Industry,2013,33(10):52-57.
[22]陈作,薛承瑾,蒋廷学,等.页岩气井体积压裂技术在我国的应用建议[J].天然气工业,2010,30(10):30-32.CHEN Zuo,XUE Chengjin,JIANG Tingxue et al.Proposals for the application of fracturing by stimulated reservoir volume(SRV)in shale gas wells in China[J].Natural Gas Industry,2010,30(10):30-32.