已发现气田可采储量增长研究

Recoverable reserve growth of discovered gas fields

已发现气田在开发过程中由于实施增产措施和储层扩边等可能会引起可采储量增长。预测可采储量增长可通过统计历史可采储量数据,并计算其年度增长系数或累计增长系数,建立可采储量增长模型来实现。目前,美国及其他国家或地区可采储量预测主要采用美国可采储量增长模型来进行。运用该模型对我国185个气田可采储量的历史数据进行拟合,结果显示,实际可采储量与模型预测可采储量比较吻合,说明该模型在我国具有一定的适用性。最后,运用该模型对我国2012年以前发现的气田进行了可采储量预测。

The application of improved recovery techniques and extension of old reservoirs can improve recoverable reserves in discovered gas field. By calculating the annual growth factor or cumulative growth coefficient of previous recoverable reserves and establishing recoverable reserves growth model, we can predict the future recoverable reserve growth. Currently, the U.S. recoverable reserve growth model is extensively used in America and other regions. This paper used this model to match historical data of recoverable reserves of 186 gas fields in China. The result shows that the actual recoverable reserves are in agreement with the recoverable reserves predicted by this model, which indicates that the model has certain applicability in China. Finally, this paper used the model to estimate the future recoverable reserves of the fields discovered before 2011 in China.