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Slot and perforate on the pipe body to be slotted pipes. The types of slot are perforated,Rectangular slotted, Trapezoid slotted,Bridge slotted, Wire wrapped screen, Mechanical cutting, Compound slotted pipe.
The slotted pipe is using in oil exploration to prevent sand, decrease oil well repaired, increase oil wells strength,integrality and stability of keeping off sand.
1.Casing slotted pipe specification:
O.D.: Casing: 4 1/2"-20"(114.3mm-508mm)Tubing:1.05"-41/2"(26.7mm-114.3m)
Length:R1:4.88-7.62M,R2:7.621-10.36M,R3:10.36-14.63MW.T.:0.205”"-0.875” (5.21mm- 22.22mm)
Product standards: API 5CT, BS EN ISO11960,NFM87-207,JIS G3439,ISO 4270,GOST632-80Material: H40,J55,K55,N80-1,N80Q, R95,L80-1, L80-9Cr,L80-13Cr, C90, T95,C110, P110,Q1252. Thread type:
Casing: STC,LTC,BTC etc.
Tubing: NU, EU,XL，PH-4,PH-6,LTC,STC,BTC etc.3.Slotted type
Cut at a right angle to the liner,this slot type shows the same diameter from the inside to the outside of the wall Although straight slots are cheaper to produce, they are less effective in sand control compared to keystone slots.
Cut at a slight angle, keystone slots, or tapered slots, are larger on the inside than on the outside, making sure that any particle entering the slot can pass through freely without clogging the slot.
Keystone slots are more expensive to than straight slots, but lower the risk of production losses due to plugged liner slots.(3)Slot Patterns
Whether you want your slotted pipe with a line, staggered, gang, overlapping, horizontal, or any other pattern, we can cut them all .Among all slot patterns, the following three are the most common.
APl Spec 5CT-Specification 5CT/SO 11960,GB/T19830-2011 Specification for Casing and Tubing,Eighth Edition,Petroleum and natural gas industries-Steel pipes for use as casing or tubing for wells.