水平井均衡采油流体控制阀调控规律研究

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A Study on the Control Law of Fluid Control Valve for Balanced Production in Horizontal Wells

XIAO Xiaohua1*，HAN Shuo²， ZHAO Jianguo²， WANG Guorong²

1.Network& InformationCenter，Southwest Petroleum University，Chengdu，Sichuan 61o5oo，China

2.SchoolofMechanicalEngineering，SouthwestPetroleumUniversity，Chengdu，Sichuan6lo5oo，China

Abstract：Aimingatthetechnicalproblemsofshortlifeandlowproductionofoilandgaswelscausedbyunbalancedproduction ofhorizontalwels，ewfluidotrolalvewithtrapezdalorifceispropoed，andtemaimuthotlingpressuredience of the valve reaches 2.65MPa . The flow pressure simulation model of multi-layer fluid control valve for horizontal well is established，whichconsiders thetrotling performance，instalationsizeandformationpressure distrbutionof thenewfluid control valve.Itisfound that inorder toachieve balancedoil production，theopeningofthe fluidcontrolvalve gradually decreasesfromtoetoee.The greater thepressurediferenceofeachlayer，thesmalertheopeningofthefluidcontrolvalve. The pressure difference is between 0.01～0.10MPa ， and the maximum reduction of the opening of each layer is about 37.2% Thelongerthe distancebetween thefluidcontrolvalves ineach layer，the greater the opening of thefluidcontrol valve.The valvedistance isbetween 100m and 500m ，andthemaximumincreaseof theopeningineach layerisabout 2.8% .The researchresultsprovideatheoretical basis for theoptimization designof theproduction string structureofthefluidcontrol valveinhorizontal wels，theformulationoftheproductionsystem，andthecontroloftheopeningofthefluidcontrolvalve， which is of great significancefor promoting the popularizationandapplicationofthe fluidcontrolvalveinhorizontal wels.

Keywords： horizontal wel; balanced production; fluid control valve; numerical simulation; flow field simulation

引言

在水平井油田的发展中，存在着复杂的地层关系（地层压差、物性差异和流体渗流速度等），势必导致各层间的相互作用[1-3]。（剩余13505字）