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電潛泵知識(shí)與控制理論培訓(xùn) 湛江 2 Introduction xxx 3 ? 電潛泵應(yīng)用技術(shù)的基礎(chǔ)知識(shí) ? 電潛泵系統(tǒng)構(gòu)成 , 主要設(shè)備的功能和工作原理及其相互間關(guān)系 ? 電泵生產(chǎn)過程中需關(guān)注的參數(shù) , 重點(diǎn)講解表現(xiàn)其工況特征和必須重點(diǎn)監(jiān)測(cè)的數(shù)據(jù) ? 各類與電泵相關(guān)的上部完井方式及管串簡(jiǎn)介 ? 氣蝕 , 稠油 , 出沙等井況對(duì)電泵運(yùn)行的影響及解決方案 ? 其他與電泵運(yùn)行壽命相關(guān)的因素 ? 電泵技術(shù)發(fā)展和特殊應(yīng)用 ? 變頻控制的基本理論及地面設(shè)備的整體構(gòu)成 ? 變頻器主要參數(shù)的計(jì)算和設(shè)置 ? 諧波應(yīng)對(duì)方案和中壓變頻器簡(jiǎn)介 ? GCS/ICS 變頻器的專題介紹和初級(jí)故障處理 ? 井下實(shí)時(shí)監(jiān)控技術(shù)的意義及產(chǎn)品介紹 A typical ESP installation 5 ESP System Technology Overview 6 Objective ? Upon letion of this course, you should be able to: Explain the uses for Electrical Submersible Pumps. List the major ponents of an ESP system. Explain the principle of an ESP system. 7 . Centrifugal Pump Gas Separator Seal Section Electric Motor 8 ESP Downhole System The basic ESP downhole system ponents are ... ?The Monitoring System (optional) ?The Power Cable ?The Motor ?The Seal Section ?The Pump 9 Built in Discharge head Tubing screws in here Bolts to the Seal Pump Shaft Built in Intake Pump Housing Rotating Impeller Stationary Diffuser The Pump 10 The Pump ? Hangs from the production tubing ? Lifts the fluid through the tubing to the surface ? Is a multistage centrifugal type ? Is constructed from impellers and diffusers ? Must be sized to match the well production ? Has an intake and discharge that either bolts onto or is threaded into the pump housing ? Normally be set above the perforation for sufficient cooling. 11 LT = Lower Tandem pump ( with built in intake ) The seal bolts on here 12 LT/MT = Lower/Middle Tandem pump Head Shipping Cap If MT (middle tandem) or LT (Lower Tandem) then a flange face is the head of the pump. 13 If Upper Tandem (UT) then a discharge is built into the pump. UT Pump Built in Discharge head 14 Middle Tandem pump Base UT or MT pump Shipping Cap 15 The Bolt on Head The Middle Tandem or Lower Tandem Pump Head 16 Gas separator intake (cut away). May be bolted on to the base of a MT (Middle Tandem) or UT (Upper Tandem) Pump The Seal bolts on here. UT or MT pump bolts on here. 17 Centrifugal ???? 18 Stages stacked on a shaft and pressed in a housing. Centrilift Submersible Pump 19 Rotating (right to left) impellers Stationary diffusers Cutaway of Pump 20 Impeller 21 Pump Stage Hydraulic Design ESP Stage designs fall into one of two hydraulic design categories … Mixed Flow flow path has both axial and radial direction with respect to the pump shaft Radial Flow flow path is generally perpendicular (radial) with respect to the pump shaft 22 Impeller Terminology Impeller Hub Bottom Shroud Top Shroud Impeller Skirt Impeller Eye Impeller Vane Downthrust Washer Upthrust Washer 23 Impeller Eye Hub Upper Shroud Vanes Lower Shroud Skirt 24 Impeller The impeller rotates about the pump axis, with the shaft It provides the centrifugal force to the fluid gives it energy. 25 Impeller Fluid enters the impeller through the ?eye? near the shaft and exits the impeller on the outside. 26 Impeller Cut Away 27 28 Diffuser 29 Diffuser The diffuser does not rotate, it turns the fluid up into the next impeller It transforms the fluid velocity, it?s energy, into head 30 Diffuser Cut Away 31 Impeller amp。 Diffuser Diffuser directs fluid into the eye of the impeller Impeller spins and gives energy to fluid which exits around the outside Diffuser redirects the fluid up into the next impeller and turns fluid energy into head 32 Impeller in Diffuser A Pump ‘Stage’ 33 Pump Stage cut away 34 01020304050600 1000 2022 3000 4000 5000 6000Flow, Barrels per day (BPD) Operating Range Head Capacity Pump Efficiency Brake Horse Power Head in Feet BHP Pump Curve 80 60 40 20 1 2 3 Efficiency % Best Efficiency Point (BEP) Total Dynamic Head ( TDH ) Tubing Pressure 36 01020304050600 1000 2022 3000 4000 5000 6000Flow, Barrels per day (BPD) Operating Range Head Capacity Pump Efficiency Brake Horse Power Head in Feet BHP Pump Curve 80 60 40 20 1 2 3 Efficiency % Best Efficiency Point (BEP) 37 Head in Feet Pump Curve 0 10 20 30 40 50 60 Flow, Barrels per day (BPD) 0 200 400 600 800 1000 Developing the Pump Stage Head / Capacity Curve 38 Pump Stage Fluid Reservoir Developing the Pump Stage Head – Capacity Curve 39 Fluid Reservoir Head (Lift) 1 Developing the Pump Stage Head – Capacity Curve 40 Head in Feet Single stage performance for a given RPM and fluid viscosity Pump Stage Characteristics 0 10 20 30 40 50 60 1 Flow, Barrels per day (BPD) 0 200 400 600 800 1000 Developing the Pump Stage Head – Capacity Curve 41 Fluid Reservoir Head 1 Developing the Pump Stage Head – Capacity Curve 42 Head Flow 1 2 Fluid Reservoir Developing the Pump Stage Head – Capacity Curve 43 Head in Feet Pump Stage Characteristics 0 10 20 30 40 50 60 Flow, Barrels per day (BPD) 0 200 400 600 800 1000 1 2 Developing the Pump Stage Head – Capacity Curve 44 Head Flow 1 2 Fluid Reservoir Developing the Pump Stage Head – Capacity Curve 45 Head Flow 1 2 3 Fluid Reservoir