多学科方法在优化薄油层水平井地质设计及现场导向中的应用
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摘要
根据葡萄花油层剩余未动用储量的现状及特点,优选了水平井拟布井区块。通过采用地震解释、地质建模、数值模拟、经济评价等多学科方法精细地质研究,搞清了拟布水平井地区储层特征,论证了水平井可行性,优化了井位设计。在现场钻井过程中,采用LWD监控仪、综合录井仪、岩屑录井、地震解释、地质模型等多种技术手段相结合,实时监控,进行综合分析,为地质导向提供依据,并准确地指导了钻井轨迹运行,实现了在不到2m的超薄单砂层中穿行,达到了较高的砂岩钻遇率,并成功的穿越了小断层,实现了二次着陆。投产后水平井产量超过了直井的3倍,达到了方案预测指标,见到了良好的经济效益。水平井钻井的成功,为低丰度葡萄花油层的有效动用开辟了新的途径。
According to current conditions and characteristics of remained reserves in Putaohua oil layers, the block to be drilled for horizontal wells has been selected. The reservoir characteristics of the block have been described through multidisciplinary research methods, such as seismic interpretation, geologic modeling, numerical analog, etc. During well drilling, LWD monitoring device, comprehensive logging device, cutting logging, seismic interpretation, geologic models, and many other technical measurements had been used for real-time monitoring and comprehensive analysis. What had been done helped geosteering, and the putting forward of drilling track. The horizontal wells drilled in ultra thin single sand layer with the thickness of less than 2m, and the penetration rate for sandstone was higher. After putting into production, the production of horizontal well was 3 times that of vertical well. The estimated indexes of the plan were obtained with good economic benefits. The success of drilling horizontal wells can be a new way for the effective development in Putaohua oil layers with low abundance.
According to current conditions and characteristics of remained reserves in Putaohua oil layers, the block to be drilled for horizontal wells has been selected. The reservoir characteristics of the block have been described through multidisciplinary research methods, such as seismic interpretation, geologic modeling, numerical analog, etc. During well drilling, LWD monitoring device, comprehensive logging device, cutting logging, seismic interpretation, geologic models, and many other technical measurements had been used for real-time monitoring and comprehensive analysis. What had been done helped geosteering, and the putting forward of drilling track. The horizontal wells drilled in ultra thin single sand layer with the thickness of less than 2m, and the penetration rate for sandstone was higher. After putting into production, the production of horizontal well was 3 times that of vertical well. The estimated indexes of the plan were obtained with good economic benefits. The success of drilling horizontal wells can be a new way for the effective development in Putaohua oil layers with low abundance.
引文
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[2]李莉,韩德金,周锡生.大庆外围低渗透油田开发技术研究[ J].大庆石油地质与开发,2004,23(5):85-87.
[3]刘文岭,李伯虎.宋芳屯、模范屯油田经济有效开发综合技术研究[ J].大庆石油地质与开发,1998,17(2):23-26.
[4]王永山,王树立,张志龙.大庆外围低渗透油田可采储量评价方法研究[ J].大庆石油地质与开发,2003,22(4):18-20.
[5]赵国忠,王曙光,尹芝林.大庆长垣多学科油藏研究技术与应用[ J].大庆石油地质与开发,2004,23(5):78-81.
[6]陈舒薇,张永庆,侯继虹.应用地质建模技术提高开发首钻井方案设计水平[ J].大庆石油地质与开发,2003,22(3):53-54.
[7]刘波,刘振,王广运.大庆老区水平井地质设计方法[ J].大庆石油地质与开发,2003,22(5):46-48.
[8]王书礼,唐许平,李伯虎.低渗透油藏水平井开发设计研究[ J].大庆石油地质与开发,2001,20(1):23-24.
[9]丁吴宁,宿淑春,张琪.水平井筒气液两相分散泡状流流动模型[ J].大庆石油地质与开发,2001,20(1):25-27.
[10]梁海龙,姜岩.薄互层反演技术在水平井设计中的应用[ J].大庆石油地质与开发,2003,22(5):68-70.
[11]万仁溥.中国不同类型油藏水平井开采技术[M ].北京:石油工业出版社,1997.
[12]刘汝山.胜利油田水平钻井技术[ J].石油勘探技术,1999,(5):27-29.
[13]冯志明.阶梯水平井钻井技术[ J].石油钻采工艺,2000,(5),22-25.
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