礁滩相储层裂缝识别方法研究
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摘要
普光礁滩相碳酸盐岩储层与常规裂缝性碳酸盐岩储层相比,具有厚度大、孔隙发育等特点,储层储集空间以孔隙为主,局部发育裂缝,常规双侧向电阻率法等裂缝识别方法适应性差。文中在岩心观察、成像测井识别裂缝基础上,研究形成了一套针对礁滩相碳酸盐岩储层地质特点的裂缝识别方法,即采用深电阻率与自然伽马、孔隙度的交会图版法识别致密岩性段裂缝,采用电阻率滤波差值法识别孔隙发育段裂缝,优选叠前方位振幅、方位频率衰减等地震属性预测裂缝空间展布,进而模拟建立裂缝分布模型研究裂缝分布特征。研究成果较好地指导了气藏地质模型建立和气井合理配产,并为开发动态分析提供了可靠的地质依据。该研究方法基于常规的测井资料,具有较大的实用价值和推广意义。
Reef flat carbonate reservoir is characterized by great thickness and large porosity in Puguang,compared with conventional fractured carbonate reservoir.Conventional dual lateral resistivity method of fracture identification shows a poor adaptability.In this paper,a set of fracture identification methods have been established for the geological characteristics of reef flat carbonate reservoir based on the core observation and imaging logging methods.The fracture of tight lithologic reservoir can be identified by using the cross plot of deep resistivity,natural gamma and porosity.The fracture of pore-developed reservoir can be distinguished through the use of difference filter of resistivity.The distribution of fracture space can be predicted with the optimization of the seismic attributes of pre-stack orientation amplitude and azimuth frequency attenuation.Then the fracture distribution model can be established to study the characteristics of fracture distribution.The research result can be used to guide the geological modeling of gas reservoir and the reasonable production allocation of gas well,which provides a reliable geological basis for the dynamic analysis of development.
Reef flat carbonate reservoir is characterized by great thickness and large porosity in Puguang,compared with conventional fractured carbonate reservoir.Conventional dual lateral resistivity method of fracture identification shows a poor adaptability.In this paper,a set of fracture identification methods have been established for the geological characteristics of reef flat carbonate reservoir based on the core observation and imaging logging methods.The fracture of tight lithologic reservoir can be identified by using the cross plot of deep resistivity,natural gamma and porosity.The fracture of pore-developed reservoir can be distinguished through the use of difference filter of resistivity.The distribution of fracture space can be predicted with the optimization of the seismic attributes of pre-stack orientation amplitude and azimuth frequency attenuation.Then the fracture distribution model can be established to study the characteristics of fracture distribution.The research result can be used to guide the geological modeling of gas reservoir and the reasonable production allocation of gas well,which provides a reliable geological basis for the dynamic analysis of development.
引文
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[13]薛永超.新立油田低渗透油层裂缝模型研究[J].断块油气田.2010,17(4):462-465.Xue Yongchao.Study on the fractured model of low permeabilityreservoir in Xinli Oilfield[J].Fault-Block Oil&Gas Field,2010,17(4):462-465.
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[15]陈冬,魏秀成.塔河地区碳酸盐岩裂缝型储层的测井评价技术[J].石油物探,2010,49(3):147-153.Chen Dong,Wei Xiucheng.Log evaluation technology of the fracturereservoir of Carbonate rock of Tahe Area[J].Geophysical Prospectingfor Petroleum,2010,49(3):147-153.
[16]刘长伟,黄文君.中值滤波方法在油田测井中的应用[J].油气田地面工程,2010,29(4):86.Liu Changwei,Huang Wenjun.Application of median filter method in theoilfieldlogging[J].Oil-GasFieldSurfaceEngineering,2010,29(4):86.
[17]潘保芝,李舟波,石雨田.测井曲线剩余变化的分维描述火成岩裂缝发育情况[J].吉林大学学报,2002,32(4):399-402.Pan Baozhi,Li Zhoubo,Shi Yutian.Logging residual disciple fracturedevelopment of igneous rock[J].Journal of Jilin University,2002,32(4):399-402.
[2]张喜亭,谭秀成,毕建霞,等.普光气田飞仙关组鲕粒滩分布规律研究[J].油气地质与采收率,2009,16(2):8-11,16.Zhang Xiting,Tan Xiucheng,Bi Jianxia,et al.Oolotic beachdistribution in Feixianguan Formation,Puguang Gas Field[J].Petroleum Geology and Recovery Efficiency,2009,16(2):8-11,16.
[3]唐永,梅廉夫,张春生,等.普光气田飞仙关组储层裂缝特征及其控制因素分析[J].石油天然气学报,2010,43(2):48-54.Tang Yong,Mei Lianfu,Zhang Chunsheng,et al.Reservoir fracturefeatures and controlling factors of Feixianguan Formation in PuguangGasfield[J].Journal of Oil and Gas Technology,2010,43(2):48-54.
[4]王鹏,金卫东,高会军,等.声、电成像测井资料裂缝识别技术及其应用[J].测井技术,2000,24(增刊1):487-490.Wang Peng,Jin Weidong,Gao Huijun,et al.Fracture identificationwith acoustic and electric imaging logging data and their applications[J].Well Logging Technology,2000,24(S1):487-490.
[5]高霞,谢庆宾.储层裂缝识别与评价方法新进展[J].地球物理学进展,2007,22(5):1460-1465.Gao Xia,Xie Qingbin.Advances in identification and evaluation offracture[J].Progress in Geophysics,2007,22(5):1460-1465.
[6]申辉林,高松洋.基于BP神经网络进行裂缝识别研究[J].断块油气田,2007,14(2):60-63.Shen Huilin,Gao Songyang.Research on fracture identification basedon BP neural network[J].Fault-Block Oil&Gas Field,2007,14(2):60-63.
[7]苏培东.储层裂缝预测研究现状与展望[J].西南石油学院学报,2005,27(5):56-59.Su Peidong.The current situation and the future of reservoir fracturesresearch[J].Journal of Southwest Petroleum Institute,2005,27(5):56-59.
[8]龚洪林,潘建国,王宏斌,等.塔中碳酸盐岩裂缝综合预测技术及应用[J].天然气工业,2008,28(6):31-34.Gong Honglin,Pan Jianguo,Wang Hongbin,et al.Technique ofcarbonate rock fracture comprehensive prediction and its application inTazhong Area of the Tarim Basin[J].Natural Gas Industry,2008,28(6):31-34.
[9]徐言岗,徐宏节,虞显和.川西坳陷中深层裂缝的识别与预测[J].天然气工业,2004,24(3):9-11.Xu Yangang,Xu Hongjie,Yu Xianhe.Identification and prediction offracture in mid-band of western Sichuan depression[J].NaturalGas Industry,2004,24(3):9-11.
[10]罗利,胡培毅,周政英.碳酸盐岩裂缝测井识别方法[J].石油学报,2001,22(3):32-35.Luo Li,Hu Peiyi,Zhou Zhengying.Fracture identification forcarbonate reservoir by well logging[J].Acta Petrolei Sinica,2001,22(3):9-11.
[11]李建林,徐国盛,严维理,等.川东沙罐坪气田石炭系储层裂缝识别与预测[J].天然气工业,2008,28(11):49-52.Li Jianlin,Xu Guosheng,Yan Weili,et al.Identification and predictionof fractures in Carboniferous reservoirs of Shaguanping Gasfield,EastSichuan Basin[J].Natural Gas Industry,2008,28(11):49-52.
[12]范晓丽,苏培东,闫丰明.储层裂缝的研究内容及方法[J].断块油气田,2009,16(7):40-42.Fan Xiaoli,Su Peidong,Yan Fengming.Research contents andmethods of reservoir fracture[J].Fault-Block Oil&Gas Field,2009,16(7):40-42.
[13]薛永超.新立油田低渗透油层裂缝模型研究[J].断块油气田.2010,17(4):462-465.Xue Yongchao.Study on the fractured model of low permeabilityreservoir in Xinli Oilfield[J].Fault-Block Oil&Gas Field,2010,17(4):462-465.
[14]吴文圣,陈钢花,雍世和,等.利用双侧向测井方法判断裂缝的有效性[J].石油大学学报:自然科学版,2001,25(1):87-89.Wu Wensheng,Chen Ganghua,Yong Shihe,et al.Use double laterlogmethod to judge the effectiveness of fracture[J].Journal of theChina University of Petroleum:Edition of Natural Science,2001,25(1):87-89.
[15]陈冬,魏秀成.塔河地区碳酸盐岩裂缝型储层的测井评价技术[J].石油物探,2010,49(3):147-153.Chen Dong,Wei Xiucheng.Log evaluation technology of the fracturereservoir of Carbonate rock of Tahe Area[J].Geophysical Prospectingfor Petroleum,2010,49(3):147-153.
[16]刘长伟,黄文君.中值滤波方法在油田测井中的应用[J].油气田地面工程,2010,29(4):86.Liu Changwei,Huang Wenjun.Application of median filter method in theoilfieldlogging[J].Oil-GasFieldSurfaceEngineering,2010,29(4):86.
[17]潘保芝,李舟波,石雨田.测井曲线剩余变化的分维描述火成岩裂缝发育情况[J].吉林大学学报,2002,32(4):399-402.Pan Baozhi,Li Zhoubo,Shi Yutian.Logging residual disciple fracturedevelopment of igneous rock[J].Journal of Jilin University,2002,32(4):399-402.
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