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      產品展廳>>產品銷售>>辰工節點分析系列軟件>>辰工油藏工程及節點分析軟件

      根據地層油氣水實際情況進行油氣水高壓物性參數(PVT)計算、基于閃蒸的流體相態計算、井底壓力計算、井筒壓力及溫度計算、產能試井及產能預測等。

      流體高壓物性參數計算:對國內外流體高壓物性參數計算進行總結,可計算油氣水粘度、壓縮系數、體積系數及密度等;氣體提供多種非烴類氣體修正方法;油相提供飽和及非飽和物性計算;兩相提供張力計算等。

      提供井筒氣液兩相流態計算:針對氣液兩相流體,提供考慮各種井口到井底的壓力折算方法(單相液體、單相氣體、氣液均勻流動、Hagedorn-Brown、Harsan-Kabir、Begges-Brill、Dons-Ros、Orkiszewski、Aziz、Mukherjee-Brill),同時提供不同深度下壓力變化等計算模塊。

      Hagedorn-Brown法:Hagedorn-Brown (1965)針對垂直井中油氣水三相流動,基于單相流體和機械能守恒定律,建立了壓力梯度模型;并在裝有1、11/4、11/2英寸油管的457m深的試驗井中,以10、30、35和110mPa.s的油、天然氣和水混合物進行了大量的現場試驗,通過反算持液率,提出了用于各種流型下的兩相垂直上升管流壓降關系式。

      Harsan-Kabir法:通過對鉛直圓管中氣液兩相流動型態轉變的機理性分析,得出了每一種流動型態的判別準則,提出了流動型態的判別方法,進而給出了各種流動型態下壓力梯度的計算方法。

      Beggs-Brill法:Beggs-Brill(1973年)根據均相流動能守恒方程式得出了壓力梯度方程,并在直徑1"、11/2"長13.7m的傾斜透明管中用水和空氣進行了大量的實驗,得出了不同傾斜管道中氣液兩相流動的持液率和阻力系數的相關規律。

      Duns_Ros法:主要通過流型的判斷進行氣液兩相管流的計算,相關公式的主要任務是判斷流型在井筒各段的分布情況。一般情況,垂直多相流可分為四種不同的流動模式,包括泡狀流,段塞流,段塞流彈狀過渡(攪拌流)流和彈狀流。

      Orkiszewski法:Orkiszewski(1967年)采用148口油井實測數據,對比分析了多個氣液兩相流模型。然后分不同流型擇其優者,綜合他的研究成果得出四種流型的壓降計算方法。

      Aziz法:按照提出的流動型態分布圖確定流動型態,然后再計算持液率和壓降。

      Mukerjee-Brill法:Mukherjee和Brill(1985)在Beggs和Brill(1973)研究工作的基礎上,改進了實驗條件,對傾斜管兩相流的流型進行了深入研究,提出了更為適用的傾斜管(包括水平管)兩相流的流型判別準則和應用方便的持液率及摩阻系數經驗公式。

      油氣井從產能預測及節點分析:根據油氣井滲流方程,提供不同時間下油氣水動態IPR曲線,提供給定井底壓力下油氣井產量隨時間變化,提供定流量下井底壓力隨時間,提供地層滲透率、表皮及氣體組份等對壓力及流量的敏感參數分析。

      提供井筒壓力及溫度計算:根據井筒管流,同時考慮地層熱傳導及井筒熱對流計算井筒壓力及溫度的變化;可考慮垂直井、水平井多種流態。

      提供油氣井梯度折算、產能試井功能:根據油氣井不同類型的產能試井(常規、等時及修正等時試井等)預測產能曲線;根據井筒測試的壓力及溫度梯度數據,進行井筒壓力及溫度梯度折算。

      多組份混合相態計算:對凝析氣井及含氣混合液,采用RK、SRK、PR及PT等狀態方程,依據相平衡理論,計算多組分混合物的相態圖,同時計算混合物的泡點及露點壓力等。

      圖1 滲透率對井底壓力的影響

      圖2 10條裂縫不同半長對產能影響

      Products>>Products on Sale>>Chengong Node Analysis Software Series>>Chengong Reservoir Engineering and Node Analysis Software

      According to the actual situation of formation oil and gas water, the high pressure physical parameters of oil, gas and water (PVT) calculation, the fluid phase state calculation based on flashing, bottom hole pressure calculation, wellbore pressure and temperature calculation, productivity well testing and prediction, etc. are proceed.

      Calculation of fluid high pressure physical parameters: The calculation of high pressure physical property parameters of fluid domestic and abroad is summarized, which can be used to calculate oil, gas and water viscosity, compression coefficient, volume coefficient and density, etc. Gas provides a variety of non-hydrocarbon gas correction methods; oil phase provides saturated and unsaturated physical properties calculation; two phases provide tension calculation, etc.

      This paper provides the calculation of gas-liquid two-phase flow pattern in wellbore: For gas-liquid two-phase fluid, the pressure conversion methods from wellhead to bottom hole (single-phase liquid, single-phase gas, gas-liquid uniform flow, Hagedorn-Brown, Harsan-Kabir, Begges-Brill, Dons-Ros, Orkiszewski, Aziz, Mukherjee-Brill) are provided, and the calculation modules of pressure change at different depths are provided at the same time.

      The Hagedorn-Brown method: Hagedorn-Brown (1965) establishes a pressure gradient model for the three-phase flow of oil water and gas in a vertical well, based on single-phase fluid and mechanical energy conservation law; In a 457m depth test well with 1, 11/4", 11/2 "tubes, a large number of field tests have been carried out on the mixture of 10, 30, 35 and 110 mPa.s natural gas, water and oil are used, and the relation of pressure drop of the two-phase vertical rising pipe under various flow patterns is put forward by the reverse calculation of liquid-holding ratio.

      Harsan-Kabir method: The method of judging each of the flow type is obtained by means of the mechanism analysis for the transition of the gas-liquid two-phase flow type in the lead straight circular pipe, and a method for judging the flow type is put forward, and the calculation method of the pressure gradient under various flow types is also given.

      The Beggs-Brill method: Beggs-Brill (1973) obtained a pressure gradient equation based on the energy conservation equation of the homogeneous flow energy, and conducted a large amount of experiments with water and air in a tilted transparent tubes with diameters of 1 ", 11/2" and 13.7 m length, The relative law of liquid holdup and drag coefficient of gas-liquid two-phase flow in different inclined pipes is obtained.

      Duns_Ros method: The calculation of the gas-liquid two-phase pipe flow is mainly carried out through the judgment of the flow pattern, and the main task of the related formula is to judge the distribution of the flow pattern in each section of the well bore. In general, the vertical multi-phase flow can be divided into four different flow modes, including a bubble flow, a slug flow, a slug flow elastic transition (stirring flow), and elastic flow.

      Orkiszewski method: Orkiszewski (1967) used 148 wells measured data to compare the gas-liquid two-phase flow models and picked the optimal one based on different flow types. The pressure drop calculation method of four flow patterns is obtained by synthesizing his research results.

      Aziz method: The flow pattern is determined according to the proposed flow pattern distribution map, and then the liquid holdup and pressure drop are calculated.

      Mukherjee-Brill method: Mukherjee and Brill (1985) improve the experimental conditions on the basis of the research work of Beggs and Brill (1973). The flow pattern of two-phase flow in inclined tube is deeply studied, and a more suitable criterion for judging the flow pattern of two-phase flow in inclined tube (including horizontal tube) and the application convenience empirical formula of liquid holdup and friction coefficient are put forward.

      Productivity prediction and node analysis of oil and gas wells: According to the seepage equation of oil and gas wells, the dynamic IPR curves of oil, gas and water at different times are provided, the production of oil and gas wells varies with time under given bottom hole pressure, the bottom hole pressure varies with time at constant flow rate is provided, and the sensitive parameters analysis of formation permeability, skin and gas component and so on to pressure and flow rate are provided.

      The calculation of wellbore pressure and temperature is provided: According to wellbore pipe flow, both the variation of wellbore pressure and temperature can be calculated by simultaneously considering formation heat conduction and wellbore thermal convection, and various flow patterns of vertical well and horizontal well can be considered.

      Provide the gradient conversion of oil and gas wells, productivity well testing function: According to different types of productivity well testing (conventional, isochronous and modified isochronous well testing, etc.) to predict productivity curves; According to wellbore test pressure and temperature gradient data, wellbore pressure and temperature gradient conversion are obtained.

      Multi-component mixed phase state calculation: For condensate gas well and gas-bearing mixture, RK, SRK, PR and PT equation of state are used to calculate the phase diagram of multicomponent mixture according to the phase equilibrium theory, and the bubble point and dew point pressure of the mixture are calculated at the same time.

      Figure1: Permeability influences bottom hole pressure Figure2: Influence of different half-length of 10 fractures to production
      高潮毛片无遮挡高清免费视频

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