稠油蒸汽吞吐阶段采收率计算公式研究

A Study for Recovery Factor of Heavy Oil Reservoir in Steam Soak's Period

摘要: 国内外尚没有一套系统的稠油注蒸汽开采计算采收率的方法。本文结合辽河油田稠油的地质特征和开发状况,在系统研究油层渗透率、原油粘度、净总厚度比和单层厚度的基础上,运用《价值工程》中的“功能重要度评价法”,优化出不同类型稠油油藏蒸汽吞吐阶段的采收率计算公式。通过辽河油田稠油已开发油藏、未开发油藏和国外蒸汽吞吐较为完整油藏的实际资料验证,该公式对于未开发油藏或油藏开发早期,缺乏动态资料的条件下,确定采收率,具有较强的适用性。

Abstract: According to geologic feature of heavy Oil reservoir and case of developing, the relation between recovery factor with permeability, Viscosity, net thickness/general thickness and net thickness of single layer in heavy Oil- reservoir was studed. Through using the method of evaluation of fuction value in Value Engincering again, so acheved formulas of calculating recovery factor. In initial stage of Oil field or no performance data the formula can be used