岩溶相控多尺度碳酸盐岩缝洞储集体二步法建模新技术
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摘要
以塔河碳酸盐岩缝洞型油藏为原型,研究并形成了岩溶相控多尺度缝洞储集体二步法建模新技术,即在古岩溶发育模式控制下,采用二步法建模:第1步建立4个单一类型储集体离散分布模型,利用地震识别的大型溶洞和大尺度裂缝,通过确定性建模方法,建立离散大型溶洞模型和离散大尺度裂缝模型;在岩溶相控约束下,基于溶洞发育概率体和井间裂缝发育概率体,采用随机模拟多属性协同模拟方法,建立溶蚀孔洞模型和小尺度离散裂缝模型;第2步采用同位条件赋值算法,将4个单一类型模型融合成多尺度离散缝洞储集体三维分布模型。该模型在三维空间定量表征了缝洞储集体的展布特征,为油田开发奠定了坚实的地质基础。
Taking Tahe fractured-cavity carbonate reservoirs as the prototype,a new technology of the two step modeling controlled by karst facies of multi-scale fractured-cavity reservoir is developed. It is a two step modeling method under the control of the ancient karst development mode: the first step is the establishment of four discrete distribution models of a single type of reservoir, namely, using the seismic identification and description of the results, to establish a large cave discrete distribution model and a large-scale fracture discrete distribution model. With the karst facies constraints, based on the probability of caves and fractures to be developed between the body and the wells, and the multi-attribute co-simulation, the dissolved pores stochastic model and the small scale fractures discrete model are built. In the second step the parity condition assignment algorithm is used, to integrate the four single types of models into a multi-scale discrete fractured-cavity reservoir 3D distribution model. The quantitative model in 3D space to characterize the distribution feature of the fractured-cavity reservoir may serve as a solid geological foundation for the oilfield development.
Taking Tahe fractured-cavity carbonate reservoirs as the prototype,a new technology of the two step modeling controlled by karst facies of multi-scale fractured-cavity reservoir is developed. It is a two step modeling method under the control of the ancient karst development mode: the first step is the establishment of four discrete distribution models of a single type of reservoir, namely, using the seismic identification and description of the results, to establish a large cave discrete distribution model and a large-scale fracture discrete distribution model. With the karst facies constraints, based on the probability of caves and fractures to be developed between the body and the wells, and the multi-attribute co-simulation, the dissolved pores stochastic model and the small scale fractures discrete model are built. In the second step the parity condition assignment algorithm is used, to integrate the four single types of models into a multi-scale discrete fractured-cavity reservoir 3D distribution model. The quantitative model in 3D space to characterize the distribution feature of the fractured-cavity reservoir may serve as a solid geological foundation for the oilfield development.
引文
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[15]赵彬,侯加根,刘钰铭,等.基于示点性过程模拟的碳酸盐岩裂缝型储层建模方法[J].科技导报,2011,29(3):39-43.Zhao Bin,Hou Jiagen,Liu Yuming,et al.Science&Technology Review,2011,29(3):39-43.
[2]江怀友,宋新民,王元基,等.世界海相碳酸盐岩油气勘探开发现状与展望[J].海洋石油,2008,28(4):6-13.Jiang Huaiyou,Song Xinmin,Wang Yuanji,et al.Offshore Oil,2008,28(4):6-13.
[3]康玉柱.中国古生代碳酸盐岩古岩溶储集特征与油气分布[J].天然气工业,2008,28(6):1-12.Kang Yuzhu.Natural Gas Industry,2008,28(6):1-12.
[4]漆立新,云露.塔河油田奥陶系碳酸盐岩岩溶发育特征与主控因素[J].石油与天然气地质,2010,31(1):1-12.Qi Lixin,Yun Lu.Oil&Gas Geology,2010,31(1):1-12.
[5]阎相宾.塔河油田下奥陶统古岩溶作用及储层特征[J].江汉石油学院学报,2002,24(4):23-25.Yan Xiangbin.Journal of Jianghan Pereoleum Institute,2002,24(4):23-25.
[6]李阳,范智慧.塔河奥陶系碳酸盐岩油藏缝洞系统发育模式与分布规律[J].石油学报,2011,32(1):101-106.Li Yang.Acta Petrolei Sinica,2011,32(1):101-106.
[7]康志宏.塔河碳酸盐岩油藏岩溶古地貌研究[J].新疆石油地质,2006,27(5):522-525.Kang Zhihong.Xinjiang Petroleum Geology,2006,27(5):522-525.
[8]肖玉茹,王敦则,沈杉平.新疆塔里木盆地塔河油田奥陶系古洞穴型碳酸盐岩储层特征及其受控因素[J].现代地质,2003,17(1):92-98.Xiao Yuru,Wang Dunze,Shen Shanping.Geoscience,2003,17(1):92-98.
[9]王萍,袁向春,李江龙,等.塔河油田4区古地貌对储层分布的影响[J].石油与天然气地质,2011,32(3):381-387.Wang Ping,Yuan Xiangchun,Li Jianglong,et al.Oil&Gas Geology,2011,32(3):381-387.
[10]张文博,金强,徐守余,等.塔北奥陶系露头古溶洞充填特征及其油气储层意义[J].特种油气藏,2012,19(3):50-54.Zhang Wenbo,Jin Qiang,Xu Shouyu,et al Special Oil.&Gas Reservoirs,2012,19(3):50-54.
[11]张希明,杨坚,杨秋来,等.塔河缝洞型碳酸盐岩油藏描述及储量评估技术[J].石油学报,2004,25(1):13-18.Zhang Ximing,Yang Jian,Yang Qiulai,et al.Acta Petrolei Sinica,2004,25(1):13-18.
[12]胡向阳,熊琦华,吴胜和.标点过程随机模拟方法在沉积微相研究中的应用[J].石油大学学报:自然科学版,2002,26(2):19-22.Hu Xiangyang,Xiong Qihua,Wu Senghe.Journal of the University of Petroleum,China:Edition of Natural Science,2002,26(2):19-22.
[13]赵敏,康志宏,刘洁.缝洞型碳酸盐岩储集层建模与应用[J].新疆石油地质,2008,29(3):318-320.Zhao Min,Kang Zhihong,Liu Jie.Xinjiang Petroleum Geology,2008,29(3):318-320.
[14]吴胜和,金振奎,黄沧钿,等.储层建模[M].北京:石油工业出版社,1999:99-104.Wu Shenghe,Jin Zhenkui,Huang Cangdian,et al.Reservoir Modeling[M].Beijing:Petroleum Industry Press,1999:99-104.
[15]赵彬,侯加根,刘钰铭,等.基于示点性过程模拟的碳酸盐岩裂缝型储层建模方法[J].科技导报,2011,29(3):39-43.Zhao Bin,Hou Jiagen,Liu Yuming,et al.Science&Technology Review,2011,29(3):39-43.
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