顺南区块缝洞型碳酸盐岩储层类型及储集模式
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摘要
顺南区块奥陶系碳酸盐岩是近年来塔里木盆塔中北部区域勘探的重点方向,由于该区域碳酸盐岩储层孔隙结构复杂,物探等方法识别难度较大,给探勘井位部署和后期提高采收率措施的制定带来了一定的难度。为明确该区域碳酸盐岩储层类型特征,识别储集体空间模式,综合利用钻井、录井和测井等资料,将处理类型分为三类:裂缝-溶洞型、裂缝-孔洞型和裂缝型储层,并探讨了不同储层类型在地震反射剖面上的特征,建立了不同储层类型的判别依据。利用试井双对数曲线特征所反应的储层渗流特征,分析了SN4和SN5-2两口井的缝洞储集模式。综合分析认为,一间房+鹰山组上段储层裂缝孔洞发育,主要以裂缝沟通溶洞的储集模式为主,而鹰山组下段则是以裂缝沟通孔洞的储集模式为主。
Ordovician carbonate rocks in Shunnan block are the key exploration direction in the north-central Tarim basin in recent years. Because of the complex pore structure of carbonate reservoirs in this area, it is difficult to identify them by geophysical methods, which brings some difficulties to the deployment of exploration wells and the formulation of measures to improve recovery rate in the later stage. In order to clarify the characteristics of carbonate reservoir types in this area and identify the reservoir space model, by comprehensive use of drilling, logging and other data, the processing types were classified into three types: fractured-karst cave reservoir, fractured-porous reservoir and fractured reservoir. The characteristics of different reservoir types on seismic reflection profiles were discussed, and The discrimination basis of different reservoir was established. The fractured-cavern reservoir models of SN4 and SN5-2 wells were analyzed by using the reservoir percolation characteristics reflected by log curve characteristics of well testing. Comprehensive analysis showed that the fracture and cave development in the upper part of Yijianfang+Yingshan Formation was mainly based on the reservoir mode of fracture communication cave, while the lower part of Yingshan Formation was mainly based on the reservoir mode of fracture communication cave.
Ordovician carbonate rocks in Shunnan block are the key exploration direction in the north-central Tarim basin in recent years. Because of the complex pore structure of carbonate reservoirs in this area, it is difficult to identify them by geophysical methods, which brings some difficulties to the deployment of exploration wells and the formulation of measures to improve recovery rate in the later stage. In order to clarify the characteristics of carbonate reservoir types in this area and identify the reservoir space model, by comprehensive use of drilling, logging and other data, the processing types were classified into three types: fractured-karst cave reservoir, fractured-porous reservoir and fractured reservoir. The characteristics of different reservoir types on seismic reflection profiles were discussed, and The discrimination basis of different reservoir was established. The fractured-cavern reservoir models of SN4 and SN5-2 wells were analyzed by using the reservoir percolation characteristics reflected by log curve characteristics of well testing. Comprehensive analysis showed that the fracture and cave development in the upper part of Yijianfang+Yingshan Formation was mainly based on the reservoir mode of fracture communication cave, while the lower part of Yingshan Formation was mainly based on the reservoir mode of fracture communication cave.
引文
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[3]蔡明金,王守峰,尹国君,等.缝洞型碳酸盐岩储层储集类型判别方法[J].油气井测试,2018,27(4):7-14.
[4]赵军,刘彦斌,王菲菲,等.碳酸盐岩缝洞型储层类型识别与分类预测[J].中国岩溶,2018,37(4):584-591.
[5]刘嘎.缝洞型碳酸盐岩储层渗流物理模型[J].辽宁化工, 2018, 47(2):135-137.
[6]田博宁,陈彦竹,杜元凯,等.碳酸盐岩储集体类型识别——以塔中区块为例[J].辽宁化工,2017,46(8):780-781+789.
[7]程飞.缝洞型碳酸盐岩油藏储层类型动静态识别方法——以塔里木盆地奥陶系为例[J].岩性油气藏,2017,29(3):76-82.
[8]张湘娟.塔里木盆地古城低凸起鹰山组储层特征研究[J].西部探矿工程,2016,28(8):77-79.
[9]韩杰,吴萧,江杰,等.塔中Ⅰ号气田西部鹰山组碳酸盐岩储层类型划分及储层连续性分析[J].油气地质与采收率,2016,23(1):14-21.
[10]陈利新,程汉列,杨文明,等.哈拉哈塘油田碳酸盐岩储层类型识别及应用[J].油气井测试,2015,24(6):21-24+74.
[11]田瀚,杨敏.碳酸盐岩缝洞型储层测井评价方法[J].物探与化探, 2015,39(3):545-552.
[12]陈利新,程汉列,杨文明,等.哈拉哈塘碳酸盐岩储层试井与生产特征分析[J].断块油气田,2015,22(4):501-504.
[13]陈利新,程汉列,高春海,等.哈拉哈塘油田碳酸盐岩储层试井特征分析[J].油气井测试,2015,24(2):16-18+75-76.
[14]郭振华.碳酸盐岩储层类型测井定量评价方法及其对油田开发的意义[J].国外测井技术,2018,39(3):58-62+2.