井控安全阀及远控房课件

Associated Well Associated Well Control EquipmentControl Equipment辅助井控设备辅助井控设备Associated Well Control Equipm1(1)Safety Valves安全阀安全阀Safety Valves2Safety Valves当发生溢流时，组织地层流体进入钻柱内Safety Valves当发生溢流时，组织地层流体进入钻柱3Full open DP Safety Valve全开式钻杆安全阀Full open DP Safety Valve4Always standby on drill floor in open position 时刻在钻台开位待命It should be installed on top of the string when Kelly is not in use.方钻杆及顶驱没用时，装在钻柱顶部(4”IF BOX*PIN connection)Always standby on drill floor 5Advantage:Minimising the effect of upward moving flow because it is stabbed and made up in open position.优点:降低了流体向上的冲击力，因为在安装时通孔时畅通的.Advantage:优点:6Inside BOP 内防喷器sealInside BOP 内防喷器seal7Inside BOPAlways standby on drill floor in open position 时刻开位待命Can not show SIDPP unless be pumped open 读不到立压，除非开泵顶通No logging operations can be done 安装后不能下入电测工具Installed on top of FOSV安装在全开式安全阀上面Can circulate down 不能反循环Inside BOPAlways standby on dr8Float valve 浮阀Flapper-type spring-loadedFloat valve 浮阀Flapper-type sp9井控安全阀及远控房课件10井控安全阀及远控房课件11安装：安装：12Advantage:Prevents formation fluids from entering the string and it stops suction of cuttings.阻止地层流体进入钻柱，阻止堵水眼Disadvantage:The drill pipe must be filled when run in.Reading of shut in drill pipe pressure(SIDPP)is more complicated.Reverse Circulation is not possible.Greater strain on the formation when RIH.Increases the overall tripping time.Advantage:13Kelly cocksKelly cocks14Safety valves in TDSSafety valves in TDS15井控安全阀及远控房课件16井控安全阀及远控房课件17压力级别选择：大于最大预期地面压力不超过BOP额定工作压力必须进行试压：试压方向压力压力级别选择：必须进行试压：18ThanksThanks19BOP CONTROL SYSTEMBOP CONTROL SYSTEM20井控安全阀及远控房课件21To provide pressurized stored hydraulic fluid so that BOP stack function can be operated promptly within API specified time and BOP can be closed even if there is no power available.To provide pressurized stored 22Chapter 2 BOP CONTROL UNITChapter 2 BOP CONTROL UNIT23Chapter 2 BOP CONTROL UNITChapter 2 BOP CONTROL UNIT24Accumulator bottlesAccumulator bottlesCharging Nitrogen only Pre-charge pressure:1000100psiRated pressure:3000psiCapacity:10GalStore pressurized hydraulic fluidAccumulator bottlesCharging Ni25井控安全阀及远控房课件26Reservoir tankReservoir tankCapacity:at least two times the usable volumeVolume upper limit(not pressurized):one inch below the inspection portVolume lower limit(fully pressurized):one inch above the suction valves of the pumpReservoir tankCapacity:at lea27Electric pumpElectric pumpElectric starter(keep in auto mode)Auto-Matic hydro-electric pressure switch(2700-3000psi)Electric pumpElectric starter 28Air pumpAir pumpAutomatic hydro-pneumatic pressure switch(2500-2900psi)Air pumpAutomatic hydro-pneuma29Pressure regulatorPressure regulatorManifold pressure regulator Reducing the accumulator pressure to manifold pressure 1500 psi.pressurePressure regulatorManifold pre30Pressure regulatorPressure regulatorAnnular pressure regulatorTwo types(Air operated and Manual operated with air motor)Air operatedShould have a unit/remote selectorPressure regulatorAnnular pres31Pressure regulatorPressure regulatorManual operated with air motorPressure regulatorManual opera32Pressure Relief ValvePressure Relief ValveAccumulator relief valve:3500psiManifold relief valve:5500psiPressure Relief ValveAccumulat33Pneumatic Pressure TransmittersPneumatic Pressure TransmittersAccumulator/Manifold/Annular Accumulator/Manifold/Annular pressure transmitterConverting hydraulic pressure into air pressureInput air pressure(3-15 psi,18 psi)pressurePneumatic Pressure Transmitter34Pressures Pressures Accumulator:3000psiManifold:1500psiAnnular:1500psiAir supply:125psiPre-charging:1000100psiPressures Accumulator:3000psi353-position/4-way valve3 positionsblock-/vent positionopen positionclose position4 connectionspressureReturn to tankOutlet to opening chamberOutlet to closing chamber3-position/4-way valve3 posi36 1-Regulator pressure 2-To/From close chamber 3-To/From open chamber 4-To reservoir tank 1-Regulator pressure 37Bypass valveBypass valve38uAccumulator capacity calculationsUsable fluid volume is defined as the volume of fluid recoverable from an accumulator between the accumulator operating pressure and 200 psi above the pre-charge pressure.Accumulator operating pressure is the pressure to which accumulators are charged with hydraulic fluid,3000 Psi.Pre-charge pressure is defined as the pressure of nitrogen in the accumulator,1000 Psi.Minimum accumulator operating pressure is 200 Psi above the pre-charge pressure,1200 Psi.Accumulator capacity calculati39uAccumulator capacity calculationsGAS LAW(Boyles Law):P1*V1=P2*V2=P3*V3=CONSTANT-(T keep constant)Accumulator capacity calculati40uAccumulator capacity calculationsPrinciples of accumulator calculations(Boyles law)V1:Actual capacity of accumulator=10 gallonsV2=(P1V1)/P2=1000*10/3000=3.33 galV3=(P1V1)/P3=1000*10/1200=8.33 galUsable fluid volume=V3 V2=5 galAccumulator capacity calculati41uAccumulator capacity calculationsSizing of accumulatorThe usable fluid capacity of accumulator bottles should be equal to the volume required to close all the BOPs and to open all HCR valves in BOP stack with an additional safety factor of 50%which is required to compensate for any fluid loss in control system and/or preventers.Accumulator bottles also should maintain a minimum operating pressure of 1200 psi or 200 psi above the pre-charge pressure,which ever pressure is maximum,when all the BOP stacks are operated with pumps off(both pneumatic and electric)Accumulator capacity calculati42uAccumulator capacity calculationsExample:A 13 5/8“BOP stack:5000 psi Annular preventer 17.98 gallons oil need to close,Three 3000psi Rams 5.8 gallons oil need to close for each,One HCR in choke to open 1.1 gallons oil need.A 3000 psi working pressure BOP control unit is used.Calculate how many bladder type accumulator bottles of 10 gal capacity are required in the unit.Accumulator capacity calculati43Draw down testShut off all the pumps,close all the preventers and open all HCRs,to check the accumulator pressure value which should not be less than 1200 psi(or 200 psi more than charging pressure)To ensure all the preventers can close and HCR open once with power offDraw down testShut off all the44Remote Control Panel Two types of panel(Air or Electric operated)Clearly showing open and closed position.Including a master shut off valve.Remote Control Panel Two types45Remote Control PanelRemote Control Panel46Chapter 2 BOP CONTROL UNITElectrical BOP Control panelChapter 2 BOP CONTROL UNITEle47Remote control panel(air operated master valve)Remote control panel48ThanksThanks49