Pump design requirements in Drilling
Pump design requirements in Drilling
(OP)
Pump design requirements in Drilling.
The pumps in the drilling industry are missing check valves on the outlet from the centrifugal & reciprocating pumps; Why are there no check valves in the drilling process? Are not Mud & check valves a good combination?
Additionally what are the filter requirements around pumps which are pumping mud? It is suggested that duplex filters are required. These pumps are pumping mud not hydraulic or lubrication fluid which then I would insist on duplex filters. The pumps in question are stopped & started at irregular intervals. Are Duplex filters necessary and when would one install Duplex filters?
Is there an industry norm which I can use for the basis of the design around pumps? Any feedback information would be beneficial.
Cheers
The pumps in the drilling industry are missing check valves on the outlet from the centrifugal & reciprocating pumps; Why are there no check valves in the drilling process? Are not Mud & check valves a good combination?
Additionally what are the filter requirements around pumps which are pumping mud? It is suggested that duplex filters are required. These pumps are pumping mud not hydraulic or lubrication fluid which then I would insist on duplex filters. The pumps in question are stopped & started at irregular intervals. Are Duplex filters necessary and when would one install Duplex filters?
Is there an industry norm which I can use for the basis of the design around pumps? Any feedback information would be beneficial.
Cheers





RE: Pump design requirements in Drilling
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"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Pump design requirements in Drilling
RE: Pump design requirements in Drilling
Since the purpose of mud is to balance the geologic pressure plus the weight of the column of cutting fluid moving up to the surface, when the pump stops, pressure at the discharge quickly falls. Its not like you're pumping up a 1000 foot high hill to the bottom of a reservoir, where it could be pretty smart to install a check valve.
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"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Pump design requirements in Drilling
RE: Pump design requirements in Drilling
Biginch: Pumping to head height of 35ft before it goes into the drill string. If the drilling stops there will be 35ft of mud in a 5" pipe on the mudpumps. As for the other pumps that's a different subject.
RE: Pump design requirements in Drilling
**********************
"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Pump design requirements in Drilling
Reciprocating pumps like piston and/or plunger pumps have an inbuilt check valve on the outlet of each piston/plunger chamber - unless they are simplex single acting. But I have never seen such a pump without suction and discharge side check valve.
regards
Micalbrch
RE: Pump design requirements in Drilling
Big Inch: My mistake height clearance is 55metres. Point taken regarding the HP pump but again there are other pumps; Centrifs with no check valve!
Again in normal process conditions Check valves are placed on the discharge side of the pumps, why is this not the case for drilling?
RE: Pump design requirements in Drilling
**********************
"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Pump design requirements in Drilling
As for your question of duplex filters - what are you trying to achieve - filter the grit from the mud? pump the mud to a settling tank or pond and let most of the grit seperate there or put the return mud thru a hydro-cyclone. I would think duplex filters would cause a major problem - and choke off in a matter of no time at all.