water well drilling casing 9-5/8" 47ppf N80Q API5CT
water well drilling casing is mainly used to support the wellbore during drilling and after completion to ensure the normal operation of the whole well
The section is circular, which is used to protect all kinds of round pipes of other equipment, mostly of iron and steel. Casing is put in
Large diameter pipe with open eyes and need to be fixed with cement. The designer of oil well must design the sleeve to withstand various kinds of oil wells
External forces, such as collisions, explosions, pull forces, etc., and chemical erosion. The casing is fixed into the borehole during drilling,
It can stabilize the well. As an important part of the well bore, casing has the following important uses:
1. prevent wellbore collapse, isolate different strata to prevent liquid convection between formation, and then control when drilling
Formation liquid and pressure action.
2. casing can also assist surface well control equipment and downhole production equipment to realize their respective functions.
3. casing is suitable for different well diameter and different material grades.
