压裂缝缝高监测技术在安塞油田的对比应用
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摘要
安塞油田属于特低渗透油藏,油层经压裂方可出油。研究压裂缝形态,对于最大限度地挖潜油层潜力以及提高油井单井产能,具有重要的意义。本文通过井下微地震、地面微地震、正交偶极声波测井及数值模拟等四种监测方式对比,重点剖析了压裂缝缝高的特点。认为压裂缝缝高随着缝长的延伸呈衰减规律,近井地带缝高为15 m~20 m,油层内部缝高为5 m~10 m,至缝长的末端,缝高值较小,直至衰减为0 m。针对这一现象,可以采取混合水体积压裂和单砂体补孔压裂措施,改善油藏开发效果。
Ansai oilfield is an extra low permeability reservoir, the reservoir by fracturing can be out of oil. Study on the fracture morphology has important significance to maximum excavate reservoir potential and improve the oil production of single well. By comparing the underground microseismic, ground microseismic, cross dipole acoustic logging and numerical simulation, this article analyzes the characteristics of fracturing height. Think of fracturing height is attenuation with the extend of crack length. The fracturing height near wellbore is15 m~20 m, the reservoir internal is 5 m~10 m, the end of fracturing length is smaller, until the attenuation of 0 m. In view of this phenomenon, we can adopt the mixed water volume fracture and single sandbody reperforating fracture to improve the effect of reservoir development.
Ansai oilfield is an extra low permeability reservoir, the reservoir by fracturing can be out of oil. Study on the fracture morphology has important significance to maximum excavate reservoir potential and improve the oil production of single well. By comparing the underground microseismic, ground microseismic, cross dipole acoustic logging and numerical simulation, this article analyzes the characteristics of fracturing height. Think of fracturing height is attenuation with the extend of crack length. The fracturing height near wellbore is15 m~20 m, the reservoir internal is 5 m~10 m, the end of fracturing length is smaller, until the attenuation of 0 m. In view of this phenomenon, we can adopt the mixed water volume fracture and single sandbody reperforating fracture to improve the effect of reservoir development.
引文
[1]朱义吾,李忠兴.鄂尔多斯盆地低渗透油气开发技术[M].北京:石油工业出版社,2003.
[2]王元基主编.特殊类油藏开发技术文集[M].北京:石油工业出版社,2012.
[3]王治中,邓金根,赵振峰,等.井下微地震裂缝监测设计及压裂效果评价[J].大庆石油地质与开发,2006,25(6):76-78.
[4]张景和.裂缝测试技术在石油勘探开发中的应用[M].北京:石油工业出版社,2001.
[5]Cipolla C L.Wright C A.Diagnostic Techniques to Understand Hydraulic Fracturing,What Why and How[R].SPE 59735,2000.
[6]春兰,向斌,何骁,等.地面微地震压裂裂缝监测在低效气井中的应用[J].天然气工业,2012,32(S1):56-58.
[7]周婕,高敬文.微地震裂缝监测系统在鄯善油田的应用[J].油气井测试,2005,14(6):62-64.
[8]吴文娟,师永民,王小军,等.超低渗油气藏非对称压裂数值模拟理论及应用[J].北京大学学报(自然科学版),2012,48(6):895-901.
[9]王伯军,张士诚,张劲,等.考虑注采关系的三维地应力场数值模拟研究[J].西南石油学院学报,2006,47(6):33-35.
[10]Bouteca M J.3D analytical model for hydraulic fracturing,theory and field test[J].SPE Annual Technical Conference and Exhibition,1984:SPE 13276.
[11]Richard O.Baker,Ruben A.Contreras.Characterization of the Dynamic Fracture Transport Properties in a Naturally Fractured Reservoir[J].Society of Petroleum Engineers,2000:SPE 59690.
[2]王元基主编.特殊类油藏开发技术文集[M].北京:石油工业出版社,2012.
[3]王治中,邓金根,赵振峰,等.井下微地震裂缝监测设计及压裂效果评价[J].大庆石油地质与开发,2006,25(6):76-78.
[4]张景和.裂缝测试技术在石油勘探开发中的应用[M].北京:石油工业出版社,2001.
[5]Cipolla C L.Wright C A.Diagnostic Techniques to Understand Hydraulic Fracturing,What Why and How[R].SPE 59735,2000.
[6]春兰,向斌,何骁,等.地面微地震压裂裂缝监测在低效气井中的应用[J].天然气工业,2012,32(S1):56-58.
[7]周婕,高敬文.微地震裂缝监测系统在鄯善油田的应用[J].油气井测试,2005,14(6):62-64.
[8]吴文娟,师永民,王小军,等.超低渗油气藏非对称压裂数值模拟理论及应用[J].北京大学学报(自然科学版),2012,48(6):895-901.
[9]王伯军,张士诚,张劲,等.考虑注采关系的三维地应力场数值模拟研究[J].西南石油学院学报,2006,47(6):33-35.
[10]Bouteca M J.3D analytical model for hydraulic fracturing,theory and field test[J].SPE Annual Technical Conference and Exhibition,1984:SPE 13276.
[11]Richard O.Baker,Ruben A.Contreras.Characterization of the Dynamic Fracture Transport Properties in a Naturally Fractured Reservoir[J].Society of Petroleum Engineers,2000:SPE 59690.
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