API SLOTTED LINER 2-7/8" API-5CT
The slotted liner is mainly used to the water and oil reservation
layer without much sand.Its function is to prevent the rock bits
dropping into the well bore.
The working principle is allowing the certain size sand coming
through the surface with crude oil but keeping the bigger size sand
being stopper outside to form sand bridgeand thereby achieving the
This type of product is commonly used to sand rock and carbonate
reservoirand especially useable for horizontal wells.
Reduce the rate of erosion of sewing caused by system, improve
self-cleaning, maintain the slot cavity open, and improve the
Longitude slot design (rectangular slot)
Reduce friction of fluid entrance, open area of the fluid and
processing are easily control. This design is mainly for thick
reservoirs, similar pressure and other physical reservoirs and also
loose sand reservoirs with medium coarse particles.
Composite slot design
Take the rate of crude oil seepage flow, flow resistance and
lifetime into account, a combination of various slot. This slot is
particularly design for complex reservoirs with different
pressures. But the manufacture technology of composite slot is
complicated and difficult.