摘要
目前常用的水驱特征曲线通常只对应一种含水率与可采储量采出程度,在实际应用中存在一定的局限性。因此选取两种在表达式上类似的水驱特征曲线,通过适当变形得到可以代表凸型、凹型和S型的含水上升规律的一种新型水驱特征曲线,并推导出含水率与可采储量采出程度的关系式。通过3个不同油田实例对比分析,发现新型水驱特征曲线特别适用于高含水期和特高含水期的油田,对中低含水期的油田适用性较差。
The commonly us ed water f looding character ist ic curve in reser voir dynamic analysis usual ly only cor responds to a kind of water cut and recoverable reserves recovery degree, which is restricted in practical appl ication. Two kinds of water flooding characteristic curves wi th simi lar expressions are selected, and a new water flooding characteristic curve which can represent the water rising law of convex, concave and S type is obtained by proper deformat ion. The relat ionship between water cut and recoverable reserves is deduced. Through the comparat ive analysis of 3 di fferent oilfield examples, it is found that the new water drive characteristic curve is especial ly sui table for oil fields wi th high water cut period and extra high water cut stage.
出处
《天然气与石油》
2017年第3期76-79,91,共5页
Natural Gas and Oil
基金
国家科技重大专项"亚太及南美地区复杂油气田渗流机理及开发规律研究"(2011 ZX 05030-005-06)
关键词
水驱特征曲线
含水规律
可采储量
采出程度
含水率
Water flooding charafiteristic curve
Water law
Recoverable lresewes
ReftoVeigr percent of reserves
Percentage of moisture
