水平气井IPR模型评价

Evaluation of IPR model for horizontal gas well

随着水平井开采数量的增长,需要一种快捷可靠的方法来估算这些井的压力-产量情况,更重要的是能用来优化井的生产动态并做出合理决策。为了预测水平气井的生产动态,在不同的时期,针对不同的储层条件和油藏性质,已经有许多人建立一些解析模型来获得气井的流入动态关系曲线和产能方程,在水平气井IPR的发展过程中,一些具有影响力的研究者提出的IPR模型已被广泛地应用于工业上,但是针对水平气井所建立的模型评价还比较单一。对几种主要的模型进行了概括、评价,并通过实际模拟气井的流入动态关系,得出合理的结论,为石油工程师们提供一个直观的参考,而不用再进行大量的重复工作。

As the produced quantity of horizontal gas well increases, a quick and reliable method is needed to estimate the pressure-rate behavior of these wells and optimize well performance and make operational decisions. In order to forecast the horizontal gas well performance, some analytical models are established during the different time to acquire the inflow performance relationship curve and deliverability equation in the different reservoir conditions and quality. With the IPR development of the horizontal gas well, the IPR model proposed by some investigators is widely applied to the industry, but the model estimation is single. So it is quite necessary to estimate and generalize indispensability from actual condition. Then the petroleum engineer can quickly estimate the performance of horizontal gas well without undertaking time-consumlng simulation study.