CAJ | 학술논문

从Arps的基本递减规律出发,提出了一种低渗透气藏递减规律的简单分析方法.指出了低渗透致密气藏气井递减率并非恒定不变,对衰减递减方程进行变形并推导出产量预测模型,对模型中的系数进行修正,使其能很好地拟合实际生产数据.此方法以月为单位使计算更加准确、合理.通过油田实际应用表明,该方法简单、可靠、实用,对于产量波动较大的低渗透和特低渗透气藏尤为适用.
종Arps적기본체감규률출발,제출료일충저삼투기장체감규률적간단분석방법.지출료저삼투치밀기장기정체감솔병비항정불변,대쇠감체감방정진행변형병추도출산량예측모형,대모형중적계수진행수정,사기능흔호지의합실제생산수거.차방법이월위단위사계산경가준학、합리.통과유전실제응용표명,해방법간단、가고、실용,대우산량파동교대적저삼투화특저삼투기장우위괄용.
Based on the basic decline rule of Arps,this paper presents a simple analysis method for decline regularity of low permeability gas reservoir.It points out that the production decline rate of gas well in such a compacted gas reservoir is not constant.The deformation of the attenuation decline equation is made,and a production prediction model is deduced with modified coefficient for better matching the production performance in terms of month rather than year in unit.The field application indicates that this method is simple,reliable and practicable for prediction of low,especially supper-low permeability gas reservoir with greater yield fluctuation.