In a PetroChina bock of Amu-Darya Basin,lots of reef and extremely thick salt-gypsum sediments were developed in platform-edge slope during the depositional period of Middle Jurassic and Late Jurassic,which forms import types of reservoir-seal assemblages in this area.Affected by the thrusting of southwestern Gissar Mountain,deformation and plastic flow happened to the salt-gypsum sediments,which make the identification of subsalt reef more difficult.To study on the relationship between patch reefs,which massively distribute in the in platform-edge slope,and the overlying deformed salt-gypsum sediments,this paper analyzes their seismic response characteristics starting with seismic forward model,identifies reefs by isochrone method,explores a way to predict the distribution of reef reservoir through the combination of palaeogeomorphology and coherent amplitude attribute,and optimizes sparse inversion with constrains of sequence stratigraphy framework,which effectively eliminates the affection of salt-gypsum formation on reef reservoir.Finally we develop a set of suitable methods for subsalt reef identification,and discover a few reefs as prospects favorable for drilling.
Wang Ling, Zhang Yan, Ma Xiao-yu, Wu Lei, Sun Lin.
Identification technology for subsalt reef in platform-edge slope[J]. Oil Geophysical Prospecting, 2011, 46(4): 621-628
1.钟建华,温志峰,李勇等.生物礁的研究现状与发展趋势.地质论评,2005,51(3);288-298Zhong Jian-hua, Wen Zhi-feng, Li Yong et al. Or-ganic reefs study; concept,classification, charactcr-istics, history and development. Geological Review,2005, 51(3);288-298
2.刘洛夫,朱毅秀.滨里海盆地及中亚地区油气地质特征.北京:中国石化出版社,2007
3.马新华,华爱刚,李景明等.含盐油气盆地.北京:石油工业出版社,2000
4.任兴国,姚声贤,罗利等.川东生物礁测井响应及判别模式.测井技术,1999,23(3);190-193Ren Xing-guo, Yao Sheng-xian, Luo Li et al. Log re-sponses to biorecf in the cast of Sichuan and its iden-tifieation mode. Well Logging Technology,1999,23(3):190-193
5.殷积峰,李军,谢芬等.川东二叠系生物礁油气藏的地震勘探技术.石油地球物理勘探,2007,42(1);70-75Yin Ji-feng, Li Jun, Xie Fen et al. Seismic explorationtechnology of Permian biohermal reservoir in easternSichuan area. OGP,2007,42(1):70-75
6.王芳,温志峰,钟建华等.柴达木盆地西部生物礁的识别与测井解释.测井技术,2005,29(2);133-137Wang Fang, Wen Zhi-feng, Zhong Jian-hua et al.Logging response and interpretation on reef in West-ern Qaidam Basin, China. Well Logging Technolo-gy,2005,29(2):133-137
7.钨光辉,黄广建,王振宇等.塔中奥陶系生物礁地震识别与预测.天然气工业,2007,27(4);40-42Wu Guang-hui,Huang Guang-jian, Wang Zhen-yu etal. The seismic identification and prediction of the reefin the Ordovician of the Central Tarim Basin. Nutu-ral Gas Industry,,2007,27(4);40-42
8.刘延莉,樊太亮,薛艳梅等.塔里木盆地塔中地区中、上奥陶统生物礁滩特征及储集体预测.石油勘探与开发,2006,33(5):562-565Liu Yan-li,Fan Tai-liang, Xue Yan-mei et al. Distri-bution of the Middle-Late Ordovician reef bank rescr-voir in Central Tarim Basin. Petroleum Explorationand Development ,2006,33(5):562-565
9.顾家裕,张兴阳,罗平等.塔里木盆地奥陶系台地边缘生物礁、滩发育特征.石油与天然气地质,2005,26(3):277-284Gu Jia-yu,Zhang Xing-yang, Luo Ping et al. Devel-opment characteristics of organic reef-bank complexon Ordovician carbonate platform margin in TarimBasin. Oil &.Gas Geology,2005,26(3):277-284
10.赵政璋,赵贤正,王英民等.储层地震预测理论与实践.北京:科学出版社,2005