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Hi, We have been given an option to use brass (spec ASTM B111) as the barrel material for downhole plunger pumps. This is the material composition Cu:70.5%; Sn:1%; Pb:0.017%; Zn:28.403% and As:0.04%. Here are the operating conditions of the well: Pressure between 5000 to 8000 kPa...

Hi, We have been given an option to use brass (spec ASTM B111) as the barrel material for downhole plunger pumps. This is the material composition Cu:70.5%; Sn:1%; Pb:0.017%; Zn:28.403% and As:0.04%. Here are the operating conditions of the well: Pressure between 5000 to 8000 kPa...

Barium sulfate scale heavily depends on temperature and pressure changes. At high temperature, both barium and sulfates will be in equilibrium in water. However, as both temperature and pressure decrease, barium and sulfate will combine together to promote scaling (barite). This of course is a...

Thanks for all your replies and links provided. We found the information very helpful.

Not sure if this is the right forum but I am looking for any experiences with polystyrene foam as insulation material for piping. Seems like polyurethane is widely used but polystyrene comes at almost half the price and also has a very low heat transfer coefficient. I appreciate anyone sharing...

Here is a list of rules of thumb that could apply for your case. CO2 - Partial pressure (psi) - Below 7, non corrosive Fe/Mn - Iron to Manganese ratio > 100:1 indicates active corrosion. This applies only to sweet systems CO2/H2S - Check Nace paper 02288 by Marsh, Palmer and Newman Chlorides -...

On a recent pipeline cut out operation, our welders found some magnetism in the line. This is a 12in 70 km long dry gas pipeline. From what we saw, there was no magnetism previous to cutting the line but once we cut it, it was magnetized. There are many theories about the source of the magnetism...

Your best bet is to take a bottomhole sample and get a SARA (Saturates, Aromatics, Resins and Asphaltenes - http://www.glossary.oilfield.slb.com/Display.cfm?Term=SARA%20analysis) analysis done on it. You could do a search on which laboratories perform this test. The results will tell you if wax...

Thanks everyone for your valuable comments. We are currently evaluating some of your suggestions and comments with our integrity group.

In northern Canada SAGD (Steam Assisted Gravity Drainage) operations are becoming very popular to produce heavy oil out of tar sands. This process requires injection of steam at very high temperatures into the producing formation. The company that I work for is experiencing erosion in fittings...

Could anyone tell me how to calculate the velocity of a slurry that will be dropped in a well whith and internal diameter of 5.5 inches? I know the viscosity and density of my slurry.