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Tracking analysis of dynamic tracking on combustion development site |
UN Ri-yi1,REN Xu-hu2,XIE Zhi-qin3,LI Shu-lan3
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(1. College of Pipeline and Civil Engineering in China University of Petroleum,Qingdao 266555, China ;2. College of Information and Control Engineering in China University of Petroleum,Qingdao 266555,China ;3. Oil Recovery Research Institute of Shengli Oilfieldy Dongying 257000, China)
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Abstract: |
In-situ combustion status of Zhen 408-20 well group in Shengli Oilfield was analyzed using numerical simulation. The development dynamic indicators for 5 years were forecast. The results show that the oil reservoir of Zhen 408-1 test well is thick and the gas-injection rate is low. The phenomenon of gas jump is serious at the top,so the single well production is lower. After adjusting the development plan by increasing air injection rate, shifting to the wet combustion with water-gas ratio of 1. 3 kg/m3, 5 years later, the formation pressure decreases to 9 MPa. The formation temperature is iower, and water vapor carries the heat of burned region to the combustion front, so the burning front is close to the producing wells. The cumulative oil production is 30. 86 kt, and the recovery efficiency reaches 14. 59%, |
Key words: reservoirs combustion development dynamic prediction numerical simulation |
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