Development Optimization for Improving Oil Recovery of Cold Production in a Foamy Extra-Heavy Oil Reservoir
- Zhaopeng Yang (PetroChina Research Institute of Petroleum Exploration&Development) | Xingmin Li (PetroChina Research Institute of Petroleum Exploration&Development) | Heping Chen (PetroChina Research Institute of Petroleum Exploration&Development) | Hariharan Ramachandran (The University of Texas at Austin, Hildebrand Department of Petroleum and Geosystems Engineering) | Yang Shen (PetroChina Research Institute of Petroleum Exploration&Development) | Heng Yang (China National Oil and Gas Exploration and Development Corporation) | Zhijun Shen (China National Oil and Gas Exploration and Development Corporation) | Gong Nong (China National Oil and Gas Exploration and Development Corporation)
- Document ID
- Society of Petroleum Engineers
- SPE Oil and Gas India Conference and Exhibition, 9-11 April, Mumbai, India
- Publication Date
- Document Type
- Conference Paper
- 2019. Society of Petroleum Engineers
- 5 Reservoir Desciption & Dynamics, 5.4 Improved and Enhanced Recovery, 1.6 Drilling Operations, 5.7 Reserves Evaluation, 1.6.6 Directional Drilling, 5.4 Improved and Enhanced Recovery, 5.7.2 Recovery Factors
- remaining oil, infilling, Development optimization, foamy oil, extra heavy oil
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- 72 since 2007
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The block M as a foamy extra-heavy oil field in the Carabobo Area, the eastern Orinoco Belt, has been exploited by foamy oil cold production utilizing horizontal wells. The early producing area has been put into production about 10 years, existing problems of productivity declining and produced gas-oil ratio rising. Therefore, the development optimization for the early producing area should be conducted in order to obtain the more profitable oil recovery.
A typical foamy oil reservoir simulation model using 5 components was created to understand the remaining oil distribution features. Based on above understandings, technical strategies were proposed for infilling well deployment in the early producing area.
Results show that the gravity drainage and gravity differentiation of oil and gas during the cold production of foamy extra-heavy oil from horizontal wells by foam flooding are the main mechanisms for formation of remaining oil. And the influence factors of remaining oil distribution include horizontal well spacing, reservoir thickness, reservoir heterogeneity, interlayer distribution and reservoir rhythm. Thus tor foamy extra-heavy oil CHOP process, the enriched remaining oil area is the place between two adjacent horizontal wells with well spacing of 600m. Therefore, well infilling is an effective measure improving oil recovery factor of cold production, and the well infilling should be implemented as soon as possible to obtain better performance of cold production.
|File Size||2 MB||Number of Pages||17|