数值模拟软件(COMET2.11)在大宁地区煤层气勘探中的应用

APPLICATION OF NUMERAL SIMULATION SOFTWARE (COMET2.11) FOR COAL-BED GAS EXPLORATION IN DANING AREA

本文简要介绍了美国ARI公司开发的COMET 2 .11煤层气数值模拟软件。在大宁地区优选吉试 1井进行实例计算 ,系统阐述了该软件如何进行模拟参数选取、网格设计、参数敏感性分析、历史拟合、产量预报、井距优选及井网部署 ,并进行了合理的模拟结果分析 ,通过模拟确定了工区煤层渗透率、开发井间距等重要的煤层气储层及开发参数 ,量化了该地区的煤层气勘探开发前景 ,进而提出了下一步勘探开发部署意见 ,中石油股份公司根据综合研究成果决定加大该地区的投资力度 。

The article briefly introduces the numeral simulation software (COMET2.11) of coal-bed gas developed by American ARI Com. With real case calculation, taking Well Jishi 1 as example,it is described how to conduct the parameters selecting,the grid block design,the sensitivity analysis of parameters,the historical fitting,the production predicting,the optimization of well spacing and pattern. Also, the simulation results are analyzed reasonably. With the simulation,the major reservoir and development parameters such as the coal-bed permeability,producing well spacing,etc. are determined. The exploration and production picture of coal-bed gas is quantified for this area,and the exploration and development plan is proposed. Based on the integrative study results,PCL decides to put more investment and quicken pace for exploration and development of coal-bed gas resource in the area.