API Grade Tubing or Casing Pup Joint

API Grade TUBING or CASING PUP JOINT 

There are also two completion procedures for slotted liner completion. First, after drilling through the oil layer with a drill bit of the same size, the lower end of the casing string is connected with the place where the liner is lowered into the oil layer, and the annular space above the top boundary of the oil layer is cemented and sealed through the external casing packer and the cementing joint

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 anti-sand purpose.

This type of product is commonly used to sand rock and carbonate reservoirand especially useable for horizontal wells.

Trapezidal design

Reduce the rate of erosion of sewing caused by system, improve self-cleaning, maintain the slot cavity open, and improve the recovery efficiency.

Groove Structure Length(mm):0.20-1.20

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

FAQ

Q1:  How long is your delivery time?

       According to the quantity of per size.Generally it is with 7 days if the goods are in stock,or it is 15-20 days if the goods are not in stock.

Q2: Do you provide samples ? is it free or extra ?

      Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q3: What is your terms of payment ?

      A: Payment<=1000USD, 100% in advance.

           Payment>=1000USD, 30% T/T in advance ,balance before shippment.

      B:100% L/C at sight.

      C:30% advance payment ,70% L/C at sight.