Use of brass (ASTM Spec B111) under sour conditions

[cacofes]

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, Temperature of 25C, Chlorides of 60,000 ppm, CO2 of 10% and H2S between 1 and 2%.

If you have experience with this material, please let me know what your thoughts are. I am honestly not very sure about the use of brass under sour conditions.

Thanks!!!

 

[rmw]

Copper and Sulfur are the bitterest of enemies.

rmw

 

[metengr]

Why not spend some time and use on-line references at your finger-tips;

http://books.google.com/books?id=XD...alloys in down hole sour environments&f=false