底水稠油油藏蒸汽吞吐底水与夹层关系数值模拟

蒸汽吞吐属衰竭式开采,相比于常规注水开发油田,油藏压降大,边底水更容易锥进淹没油层,增加开采成本,降低油层动用程度和油藏采收率。常用的解析方法不能很好地定量描述底水锥进和稠油油藏开采效果。因此,从底水锥进和绕过夹层的原理出发,运用数值模拟方法,采用三相两组分数学模型,根据油田实际生产数据,研究了底水和夹层对底水稠油油藏吞吐效果的影响,及夹层与底水在蒸汽吞吐过程中的关系。该研究对底水稠油油藏的开采具有一定的指导意义。

Study on relationship between bottom water and interbed of heavy oil during steam stimulation

Steam stimulation belongs to depletion production.In contrast with normal inject water development,the pressure decrease of it is great,so it is easier to cause bottom water coning and flood hydrocarbon zone,and the utilization efficiency of hydrocarbon zone and recovery of reservoir will also be decreased.In view of general analytic method can't describe this effect quantificationally.Based on principle of bottom water conning and by-passing of interbed,used numerical simulation method of three phases with two components,combined with actual production data,studied effect and relationship of bottom water and interbed to steam stimulation effectiveness of heavy oil reservoir with bottom water.This result can give some construction to development of bottom water heavy oil reservoir.