Accumulator working on Whiteboard | Well control | Drilling | BOP | IWCf | How accumulator works
HTML-код
- Опубликовано: 24 апр 2021
- Learn how accumulator works. The BOP control unit consists of accumulator bottles, a reservoir tank, a charging system to pump hydraulic fluid into accumulator bottles, pressure regulating valves, an operating manifold, pressure relief valve, pneumatic pressure transmitters, and air junction boxes. The purpose of the BOP control unit is to provide pressurized hydraulic fluid that will promptly operate the blowout preventers. The BOP control unit consist of at least one electric pump and two or three air pumps. Its purpose is to pump hydraulic fluid into the accumulator bottles. The sizing of the pumps depends on the volume required to be pumped into the accumulator bottles. With the number of pumps available in the unit, the system should be charged within 15 minutes. As
per API, with accumulators are isolated, each pump system should be capable of closing annular preventer, opening one HCR, and provide the operating pressure level recommended by the annular BOP manufacturer to effect a seal within 2 minutes. Before commencing a visual inspection, ensure power to the electric pump and air supply to the air pump is turned off.
Electric Pumps The guard which covers the chain or belt & connects the motor to the pump, sometimes vibrates & becomes loose and should be secured. Routine maintenance includes checking of oil level in pump & crank case, chain guard, and cleaning of filters. A hydro-electric pressure switch is connected to the electric pump which starts the pump automatically when the pressure drops below 90% of unit rated working pressure & stops the pump when the rated working pressure is reached. The cut-off limit of the pump can be increased or decreased by adjusting the screw provided in the pressure switch. In normal operation, the starter switch should be in Auto mode.
Air Pumps
Check the condition of the air filter and lubricant. Ensure that the lubricator contains a sufficient amount of oil. Inspect the condition of the air line running into the pumps and ensure that the high-pressure discharge lines are secured to the control unit. The suction filter should be cleaned periodically. This provides an opportunity to assess the condition of hydraulic fluid by exposing the type of contaminant present. A hydropneumatic pressure switch is connected in the air line to automatically shut off the air pump when desired accumulator pressure is reached. The cut-off limit of the air pump can be increased or decreased by adjusting the spring compression by tightening or loosening the adjusting nut provided in the pressure switch.
5.10.1.6 Pressure Regulating Valve (Regulators) The BOP control unit comprises two regulators; one is a manifold regulator which regulates the accumulator pressure from zero to 1500 psi and in some units from
Zero to 3000 psi. The downstream of the manifold regulator is connected to a bypass valve and from there to an operating manifold. Manifold pressure operates all the functions except annular preventer in BOP stack. Another regulator is for annular preventer which regulates accumulator pressure to operating pressure of the annular preventer from zero to 3000 psi.
RigWorld Wellcontrol Training Manual
Never had anyone,even the books explained the working of this system so well. Thank you
Nicely explained sir. Thanks for the video.
Best video every oil field person must watch this..... love the way you explain everything sir ... Plz explain solid control equipments also like that...
Great! A very thorough and clear teaching.
Thank you so much. Very clear explanation!
Thank you sir
Great to learn from this video. Thank you so much.
Good morning sir can you explain about of shear operation during well blow out......
Thank you so much. Very clear explanation
Thanks for your explaination sir keep doing good job
Very nice explanation sir thank you so much
Very detailed video 👏👏
Such as you great sir
Excellent
Thanks for the detailed information. Can you also share the Accumulator Electrical Charging Working video? As I found the Accumulator Pneumatic charging working video.
Whats the procedure during ram change? Do we need to isolate the banks? Or keep it open?
When I close a bop and put the 3p4w valve in neutral , and suppose a kick occurs, will it open ?
👏👏
Sir if BOP has closing ratio of 10.56:1 with BOP class 5 A1-R4 15K BOP. can you make any video for usable fluid on this one when closing all annular and rams.
What is the purpose of selector valve as 3P 4W valve , sir ?
At 08:03 neutral position has been mistakenly depicted wrong way. In neutral position ,Ports are locked and disconnected rather than directed to drain . Correct me if I am wrong.
MANIPULATOR AND SELECTOR VALVES
All these valves are 3-position 4-way valves. When a manipulator or selector valve is kept in open position, the pressure port gets connected to open port and drain port gets connected to close port. When these valves are kept in close position the pressure port gets connected to close port, and drain port gets connected to open port. When a manipulator valve is kept in Block(neutral) position the open and close ports get connected to drain. When a selector valve is kept in Block(neutral) position all the four ports get isolated.
Sorce
Thank you so much sir.. But you dint explained the bypass
Our accumulator is 5000 Psi
Sir please gime me pdf please
Dear sir when I charged accumulator upto 3000 psi then it's goes down to 2700 psi without any operation but after then it's remain keep hold 2700 psi please guide me this issue
It should still drop but there could be a leak in the system. Did the electric pump cut in to charge it back up again? Depending on your cut in of the electric pump, it should charge to the max system pressure.
Thank you sir
I invite you to join my new course for free. Click on the below link to join.
www.erigworld.com/s/store/courses/description/FREE-COURSE