CAJ | 학술논문

地下多孔介质因具有较大的比面积而对凝析油气流体具有较强的吸附能力，多孔介质吸附对凝析油气渗流过程的影响是国内外较为关注的问题。文章根据物质平衡原理，利用微元体法重新推导和建立了新的凝析油气渗流微分方程，首次将多孔介质吸附影响直接纳入渗流微分方程之中，并定义了相应的两相拟压力函数，得出了与单相液体渗流微分方程形式上相似的渗流方程，然后推导出了渗流过程中地层反凝析油饱和度与压力的关系,最后对地层中反凝析油饱和度、吸附相流体饱和度以及两相拟压力与压力的关系和生产过程中地层反凝析油饱和度的动态分布进行了实例计算和分析，结果表明：考虑多孔介质吸附影响与不考虑其影响的凝析油气体系渗流规律差异明显，多孔介质对凝析油气渗流的影响较大，在工程实际应用中不容忽视。
지하다공개질인구유교대적비면적이대응석유기류체구유교강적흡부능력，다공개질흡부대응석유기삼류과정적영향시국내외교위관주적문제。문장근거물질평형원리，이용미원체법중신추도화건립료신적응석유기삼류미분방정，수차장다공개질흡부영향직접납입삼류미분방정지중，병정의료상응적량상의압력함수，득출료여단상액체삼류미분방정형식상상사적삼류방정，연후추도출료삼류과정중지층반응석유포화도여압력적관계,최후대지층중반응석유포화도、흡부상류체포화도이급량상의압력여압력적관계화생산과정중지층반응석유포화도적동태분포진행료실례계산화분석，결과표명：고필다공개질흡부영향여불고필기영향적응석유기체계삼류규률차이명현，다공개질대응석유기삼류적영향교대，재공정실제응용중불용홀시。
The porous media underground have a stronger adsorption capacityfor condensate gas fluid because of their larger specific surface and the effect of the porous media adsorption on condensate gas flow is a problem which has been followed with interest at home and abroad． In the paper， according to material balance principle， a new condensate gas flow differential equation is rederived and set up by use of the infinitesimal volumn method；the influence of the porous media adsorption is directly introduced into the flow differential equation firstly and relevant two-phase pseudopressure function is defined； a flow equation similar to single-phase liquid flow differential equation in form is obtained；then the relation between formation retrograde condensate saturation and formation pressure in flow process is derived；and then the relation between pressure and retrograde condensate saturation，adsorption fluid saturation and two-phase pseudopressure in formation as well as the dynamic distribution of the formation retrograde condensate saturations are calculated and analyzed by example． The results show that the condensate gas flow law considering the influence of the porous media adsorption is obviously different from the one unconsidering its influence； and the effect of the porous media on the condensate gas flow is greater， which can＇t be neglected in application to engineering．