CAJ | 학술논문

以中低渗砂岩油藏S区块为例，为设计化学驱井网和提高其特高含水期油藏采收率，设计反五点和反十三点组合井网、小五点井网和斜列井网，运用三次采油数值模拟软件开展效果预测。结果表明，斜列井网具有较强的适应性，见效时间早、持续时间长，能提高采收率12．96％；组合井网次之；小五点适应性较差。认为试验区适宜井网为斜列井网。
이중저삼사암유장S구괴위례，위설계화학구정망화제고기특고함수기유장채수솔，설계반오점화반십삼점조합정망、소오점정망화사렬정망，운용삼차채유수치모의연건개전효과예측。결과표명，사렬정망구유교강적괄응성，견효시간조、지속시간장，능제고채수솔12．96％；조합정망차지；소오점괄응성교차。인위시험구괄의정망위사렬정망。
Take Block S, a mid-low permeability sandstone reservoir, for example, the paper designs well pattern of chemical flooding and enhances oil recovery factor at the stage of ultra-high water-cut. Based on the adjustment history of well pattern, such three different well patterns as inverted 5-spot and inverted 13-spot combination well pattern, little 5-spot well pattern and tilted-line well pattern, numerical simulation technology is used to predict the performance of chemical flooding. The results show that tilted-line well pattern has strong feasibility for early result and long sustainable period and can enhance oil recovery of 12.96%; the combination well pattern is second to it; and little 5-spot well has less feasibility. Considering chemical injectors and facility investment, the optimized well pattern of the target area should be tilted-line well.