西南石油大学学报(自然科学版)
西南石油大學學報(自然科學版)
서남석유대학학보(자연과학판)
JOURNAL OF SOUTHWEST PETROLEUM UNIVERSITY(SCIENCE & TECHNOLOGY EDITION)
2010年
2期
118-122
,共5页
王树平%袁向春%刘传喜%严谨%郑荣臣
王樹平%袁嚮春%劉傳喜%嚴謹%鄭榮臣
왕수평%원향춘%류전희%엄근%정영신
水平井产能%产能预测%计算模型%井筒压降%气藏水平井
水平井產能%產能預測%計算模型%井筒壓降%氣藏水平井
수평정산능%산능예측%계산모형%정통압강%기장수평정
horizontal well deliverability%deliverability prediction%computering model%wellbore pressure drop%horizontal gas well
依据水平井渗流特点,将水平井渗流区域分为一个长方体和两个半圆柱体,再根据能量守恒及达西定律,考虑了气藏与水平井筒的耦合作用以及井筒内的压力损失,建立了气藏水平井产能预测新模型.分析了水平井筒内的压力和流量的变化,与考虑井筒压降的Joshi模型进行了对比,新模型计算结果与实际测量结果误差最小.影响因素分析表明,该模型在高渗透率、长井筒和小井径的情况下更为有效.
依據水平井滲流特點,將水平井滲流區域分為一箇長方體和兩箇半圓柱體,再根據能量守恆及達西定律,攷慮瞭氣藏與水平井筒的耦閤作用以及井筒內的壓力損失,建立瞭氣藏水平井產能預測新模型.分析瞭水平井筒內的壓力和流量的變化,與攷慮井筒壓降的Joshi模型進行瞭對比,新模型計算結果與實際測量結果誤差最小.影響因素分析錶明,該模型在高滲透率、長井筒和小井徑的情況下更為有效.
의거수평정삼류특점,장수평정삼류구역분위일개장방체화량개반원주체,재근거능량수항급체서정률,고필료기장여수평정통적우합작용이급정통내적압력손실,건립료기장수평정산능예측신모형.분석료수평정통내적압력화류량적변화,여고필정통압강적Joshi모형진행료대비,신모형계산결과여실제측량결과오차최소.영향인소분석표명,해모형재고삼투솔、장정통화소정경적정황하경위유효.
According to the characteristics of flowing through porous media,the flowing region of horizontal well is divided into a rectangular and two semi cylindrical areas,the new model for predicting horizontal well deliverability in gas reservoir is established by considering the coupling of gas reservoir and horizontal wellbore and the pressure drop in the wellbore,as well as the law of conservation of energy and Darcy′s law.The change of pressure and flow amount in wellbore is analyzed,the comparison with Joshi model which considers pressure drop in wellbore is carried out,the error between computering result with the model and practically measured result is least.The result indicates the model is reliable to the situation of high permeability,long wellbore and slim wellbore.
