Each control system is specifically engineered to assure reliable control of the BOP stack with adequate reserve for continuous operation under emergency conditions. Sara welcomes the opportunity to assist you in the proper selection of standard equipment or custom design to meet your application and certification requirements. This system shown here is for Air Remote Control Panel operation. Due to the level of technology available, the panels were controlled by pneumatic, electrical or both power sources.
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There are several of high pressure cylinders that store gas in bladders and hydraulic fluid or water under pressure for hydraulic activated systems. Pressure based on 3, psi surface stack system that you should check on BOP remote panel and koomey unit is listed below:. According to API RP 53, there must be 2 or 3 independent sources of power that will be available for each closing unit. Typically, you will these following sources:. Please remember that the diagram is for learning purpose.
It may or may not match with your rig configuration. However, the concept of it is the same. Cormack, D. An introduction to well control calculations for drilling operations. Texas: Springer. Crumpton, H. Well Control for Completions and Interventions. Texas: Gulf Publishing. Grace, R. Paises Bajos: Gulf Professional Pub.
Houston: Gulf Publishing Company. Watson, D. Advanced well control. Richardson, Tex. Depending on which equipment, you may need to read the manufacture recommendation. It should tell you about how often of inspection is. I would like any information concerning an accumulator function test as well as information concerning the accumulator pre-charge.
Thank you! Nitrogent is pressured up the bladder inside the accumulator bottle. Typically, the pre-charge pressure is psi. Once psi pre-charge pressure is accomplished, reservoir fluid will be injected into the bottle to certain pressure as psi.
Reservoir fluid can be hydraulic oil or environmentally fluids the preference fluid for operators. There are several types of hydraulic fluid available in the market for Koomey. I cannot give you the exact answer about it and the best way is to find from the manufacture.
Hello sir, How to check or inspect koomey unit, wheather its working properly?? Can we check during rig operations without any shut down??
You can check the Koomey unit by checking accumulator pressure. It should stay where the manufacture designs as psi. Moreover, when you function test BOP, you should see that the electrical and pneumatic pumps should kick in when pressure drops. Are the Koomey units still available on market? I cannot find any offial websitefo the Koomey company.
I had one experienced with Koomy inspection and function test with third party team audit which required from our client This is required when new rig up as I was AD at land rig Thailand. Physical inspection of all quipments in unit. Function of equipment such as electrical main control signal and alarm pilot lamp, oil level etc must be activate if working properly which you need to test in all situation that all alarm response. Check for nitrogen by connect gauge valve to show audit team all bottles are fill up 1, PSI.
Rig Air supply for us using psi 6. Bypass system working properly. Remote control system. Connection hose and supply to BOP stack Power aplly to system to check hose leaking and condition all connections must be secure Valve activate to control are correctly, Close and Open have to physical check at BOP stack during activate valve. Hi, I want to know accumulator pressure in rig move OR transportation procedure of Koomey unit.
Please I need Your Help. The Pressure then starts dropping by psi per 3 Minutes. NO internal or External Leakage Observed. It should not drop even though you have pre-charge only psi.
You many need to separate each section and do the pressure test to find the leak. What shall be the minimum wall thickness of Koomey bottle and Koomey lines? How often the wall thickness inspection to be carried out? You need to ask the manufacture for the information. Well I know 60 seconds or less to close annular and 45 seconds or less to close Ram Type preventers.
Where do I find the documentation for the procedure as far as…. Push the Function Button, start counting when Readback pressure starts to rise again stop counting. For the surface stack, it is a typical pressure at psi. You may get higher pressure in a deepwater system.
Matt… You have a 4-way valve leaking…remove the top-side bung on each end of the accumulator and look through with flash-light… you will be able to see which valve is leaking. You should contact manufactures which you may find on the internet.
Perform Function test. When we open keeping the 4-ways valve in open side 1. After taking the 4-ways valve from open side to neutral side, immediately pressure up to PSI. Open the plug on oil tank and check for returnu, you can see from the pipe below the 4 way valve.
If is the valve you listen noise an the 4 way valve. Or you disconnect the hose to annular and plug then operate the 4 way valve, if the pressure still drop is the valve leak otherwise is the piston seal on BOP. Great beat! I would like to apprentice whilst you amend your web site, how could i subscribe for a blog site?
The account helped me a acceptable deal. I were a little bit familiar of this your broadcast provided shiny clear idea. Your email address will not be published. This site uses Akismet to reduce spam. Learn how your comment data is processed. By DrillingFormulas. Post Views: 20, Share the joy. Tagged Accumulator , Koomey , Well Control. Bookmark the permalink.
About DrillingFormulas. Com Working in the oil field and loving to share knowledge. View all posts by DrillingFormulas. April 19, at am. Com says:. April 19, at pm. VINOD says:. June 27, at pm. HI SIR , i want to know about a bop control system inspection. July 4, at pm. Fred Godbout says:. February 27, at pm. March 1, at pm. Thanks for your recommendation. I will put the in article list which will be done later. Mohammed Tammam says:. March 31, at pm.
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BOP Accumulator Units
This topic describes how an accumulator Koomey Unit works. First of all, I will start with accumulator bottles. Each bottle, which has a rubber bladder inside, has a storage volume of 10 gallons. The rubber bladder inside is pre-charged to 1, psi with Nitrogen N2. Each bottle will be pressured up psi over the pressure charge pressure.