油气藏评价与开发
油氣藏評價與開髮
유기장평개여개발
2013年
2期
38-40,61
,共4页
低渗透油藏%水平井%井筒压力%耦合模型
低滲透油藏%水平井%井筒壓力%耦閤模型
저삼투유장%수평정%정통압력%우합모형
low permeability reservoir%horizontal well%wellbore pressure%coupling model
建立了低渗透油藏三维稳态流动模型及水平井井筒流动模型，然后将水平井井筒流动和油藏渗流联系起来建立耦合模型，并提出耦合模型求解方法，编制了相应的程序进行实例计算和分析。研究表明：水平井段靠近跟端段，随着启动压力梯度的增大，水平井井筒压力变化越小，水平井段靠近趾端段，水平井井筒压力不随启动压力梯度变化而变化。当水平渗透率不变时，随着垂向渗透率的减小，储层各向异性增大，井筒的压力分布越均匀。研究为低渗透油藏的产能及动态分析提供了一定的理论基础。
建立瞭低滲透油藏三維穩態流動模型及水平井井筒流動模型，然後將水平井井筒流動和油藏滲流聯繫起來建立耦閤模型，併提齣耦閤模型求解方法，編製瞭相應的程序進行實例計算和分析。研究錶明：水平井段靠近跟耑段，隨著啟動壓力梯度的增大，水平井井筒壓力變化越小，水平井段靠近趾耑段，水平井井筒壓力不隨啟動壓力梯度變化而變化。噹水平滲透率不變時，隨著垂嚮滲透率的減小，儲層各嚮異性增大，井筒的壓力分佈越均勻。研究為低滲透油藏的產能及動態分析提供瞭一定的理論基礎。
건립료저삼투유장삼유은태류동모형급수평정정통류동모형，연후장수평정정통류동화유장삼류련계기래건립우합모형，병제출우합모형구해방법，편제료상응적정서진행실례계산화분석。연구표명：수평정단고근근단단，수착계동압력제도적증대，수평정정통압력변화월소，수평정단고근지단단，수평정정통압력불수계동압력제도변화이변화。당수평삼투솔불변시，수착수향삼투솔적감소，저층각향이성증대，정통적압력분포월균균。연구위저삼투유장적산능급동태분석제공료일정적이론기출。
This paper established the 3D homeostasis flow model and horizontal wellbore flow model of low permeability reservoir and then built up coupling model of horizontal wellbore flow and reservoir seepage, put forward the calculation method and com-piled corresponding program for calculation and analysis. The research showed that when horizontal section is close to the end, with the increase of threshold pressure gradient, the horizontal wellbore pressure change is small. But when the horizontal section is near the front section, horizontal wellbore pressure does not vary with the change of threshold pressure gradient. When the horizontal per-meability is unchanged, as vertical permeability decreases and reservoir anisotropy increases, wellbore pressure distribution is uni-form. The research provides a theoretical basis for productivity and dynamic analysis of low permeability reservoirs.
