We have about 400 moyno (Robin Myers) downhole pumps for pumping out heavy crude from 1200 - 1500 feet. Availability 100%, only regular greasing of drive heads, and changing v-belts. Occasionaly changing of rotor and stator, but in most cases this is caused by well problems.
We also havo 4 mono (Dresser) pumps for pumping out oily water from a sump pit. Problem cases because dirt(grass & leaves) is always getting in. Maintenance intensive. Steven van Els
SAvanEls@cq-link.sr