重庆科技学院学报:自然科学版
重慶科技學院學報:自然科學版
중경과기학원학보:자연과학판
Journal of Chongqing University of Science and Technology:Natural Science Edition
2012年
4期
60-63
,共4页
高升%刘永辉%章毅%赖希%李士国%罗程程%王武兵
高升%劉永輝%章毅%賴希%李士國%囉程程%王武兵
고승%류영휘%장의%뢰희%리사국%라정정%왕무병
积液井%压力预测%两相管流%模型对比
積液井%壓力預測%兩相管流%模型對比
적액정%압력예측%량상관류%모형대비
liquid loading well%pressure calculating%two-phase flow%model comparison
川西定向气井测压呈典型的两段分布,下部压降梯度大的原因是受到液相滑脱损失和倾斜段的影响。针对垂直段和倾斜段分别统计评价工程常用的气液两相管流压降模型:垂直段产气量低于1×104m3/d时采用无滑脱模型,否则采用Hagedorn&Brown模型;倾斜段采用DPI模型。组合建立适用于定向井的气液两相管流新模型。大牛地气田应用实践表明,新模型各项误差均小于5%,明显优于常规单一压降模型。
川西定嚮氣井測壓呈典型的兩段分佈,下部壓降梯度大的原因是受到液相滑脫損失和傾斜段的影響。針對垂直段和傾斜段分彆統計評價工程常用的氣液兩相管流壓降模型:垂直段產氣量低于1×104m3/d時採用無滑脫模型,否則採用Hagedorn&Brown模型;傾斜段採用DPI模型。組閤建立適用于定嚮井的氣液兩相管流新模型。大牛地氣田應用實踐錶明,新模型各項誤差均小于5%,明顯優于常規單一壓降模型。
천서정향기정측압정전형적량단분포,하부압강제도대적원인시수도액상활탈손실화경사단적영향。침대수직단화경사단분별통계평개공정상용적기액량상관류압강모형:수직단산기량저우1×104m3/d시채용무활탈모형,부칙채용Hagedorn&Brown모형;경사단채용DPI모형。조합건립괄용우정향정적기액량상관류신모형。대우지기전응용실천표명,신모형각항오차균소우5%,명현우우상규단일압강모형。
In western Sichuan gas field, measured pressure data in inclined gas well shows typical characteristics of two-stage. This paper analyzes the pressure gradient, and conclusion that it is influenced by gas-liquid slippage loss and inclined section. So we divided into vertical section and inclined section, and then statistically evaluate the common gas-liquid two phase pipe flow model. The conclusion is that the vertical gas production is less than 1 ~ 10~m3/d using no-slip model, otherwise we use Hagedorn and Brown model, and the DPI model is used in inclined section. Finally, forming a new model applies to inclined gas wells. Measured pressure data in Daniudi gasfield shows that the new model errors are less than 5%, and it is better than conventional model of pressure drop. Research results in deviated reservoir and condensate gas reservoir development have important application value and practical significance.