Seismic Reservoir Prediction of Deep Carbonatite—A Case Study of Yijianfang Formation in Hadexun Zone of Tarim Basin(PDF)
《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]
- Issue:
- 2016年第05期
- Page:
- 715-726
- Research Field:
- 应用地球物理
- Publishing date:
Info
- Title:
- Seismic Reservoir Prediction of Deep Carbonatite—A Case Study of Yijianfang Formation in Hadexun Zone of Tarim Basin
- Author(s):
- DI Gui-dong; PENG Geng-xin; PANG Xiong-qi; LIU Li-feng; LI Guo-hui; LI Gang; TAN Yang
- 1. Laboratory for Integration of Geology and Geophysics, China University of Petroleum, Beijing 102249, China; 2. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China; 3. Tarim Oilfield Company, PetroChina, Korla 841000, Xinjiang, China
- Keywords:
- reservoir; fluid; prediction; Yijianfang Formation; palaeogeomorphology; carbonatite; controlling factor; Tarim Basin
- PACS:
- P631.4;TE122
- DOI:
- -
- Abstract:
- The hydrocarbon reservoirs of carbonatite in Tarim Basin have the characteristics of deep buried, complicated reservoir space and fluid properties and weak seismic reflection signal. The conventional post-stack seismic data and corresponding techniques are not competent to accurately predict the distribution and quality of this kind of reservoirs. Based on the preserved pre-stack gathers of seismic data, the pure longitudinal wave reservoir inversion technology was used to analyze the favorable position of karstic reservoir; the frequency-dependent AVO inversion method was used to predict the oil-gas-bearing of Yiijanfang Formation; the paleogeomorphy recovery technology was used to predict the favorable distribution of carbonate reservoirs in order to provide a reliable geological basis for the distribution of dissolved pore reservoir; further, the distribution of deep secondary carbonate reservoirs was discussed. The results show that the prediction results by the frequency-dependent AVO inversion method are coincident with the actual drilling and logging data; the distribution of carbonate reservoirs is controlled by paleogeomorphy, fault, unconformity and the updip part of tectonic setting. The above new geophysical method is successfully applied in the prediction of carbonate reservoirs, promoting the further deep hydrocarbon exploration in Tarim Basin.
Last Update: 2016-09-30