漏失带对SAGD开采油砂生产模拟研究.PDF

漏失帶對SAGD開採油砂生產模擬研究 A Numerical Simulation of Thief Zone Effect on the Performance of SAGD Process 1 1 2 3 C. W. Wang, C. C. Tseng, P. Y. Wu, Z. S. Lin SAGD There is a maj or concern that the top water zone, bottom water zone and top gas zone of an oil sand deposit might be detrimental to oil recovery from steam-assisted gravity drainage (SAGD) process. The purpose of this study is to investigate the effect of the thief zones on the performance of SAGD process using CMGs STARS simulator. Numerical simulation result s indicated that : (1) there is a detrimental effect of top water zone on SAGD performance; (2) low steam inj ection efficiency is caused by low pressure difference between the top gas and steam inj ection pressure; (3) when the oil density is higher than water density resulting in heated oil flowing to bottom water lowering the oil recovery. However, a successful solvent co-inj ection with steam can effectively improve the production performance of SAGD. 關鍵詞： Key words: Top Water ; Bottom Water ; Top Gas; Expanding Solvent SAGD (ES-SAGD) 壹、前　言 Alberta Oil Sand Bitumen 100 cp 10,000 cp Heavy Oil In-Situ Combustion Cyclic Steam Paper presented at 2012 CIMME Annual Convention, November 2, 2012, Kaohsiung. 1 2 1 2 EDRI, CPC Corporation, Taiwan / Researcher Supervisor 3 3 Department of Resources Engineering, NC