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SLOTTED PIPE
SLOTTED PIPE

SLOTTED PIPE

The slotted casing pipes using in oil exploration can prevent 99% sand, decrease 80% of oil well heavy maintenance, as well increase the strength of the oil well, integrality and stability of keeping sand off.
Standard:API 5CT
Grade:API J55, API K55, API N80, API L80, API P110
Product introduction
Technical data
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Product introduction
Standard:API 5CT
Grade:API J55, API K55, API N80, API L80, API P110
Thickness:6.88mm - 11.51mm
Certification:ISO, API, TPI
Sorts:API casing
Length:≤15m (each)
Outside Diameter:50~200mm
Slot Width:(0.10~4)mm ±0.03mm
Slot Number:as per customer’s requirement
Slot Shapes:straight in line pattern, staggered pattern, spiral pattern
Slot space:as per customer’s requirement

Description
The slotted casing pipes using in oil exploration can prevent 99% sand, decrease 80% of oil well heavy maintenance, as well increase the strength of the oil well, integrality and stability of keeping sand off. Meanwhile, the laser incision tech can make the slot be smooth and precision. The structure of slotted casing pipe is sample, but it works highly efficient.

Slotted tube processing is on high strength steel body with cold or hot working methods, cutting out hundreds of thousands of longitudinal cracks, cracks commonly used specifications for: seam width 0.15 3 mm, even more wide, gap length 50-200 mm.Cross section types are: rectangular, ladder shaped, specific and various, also has a circular groove screen, aperture diameter specifications range 5-20 mm in meters.Slotted sieve tube hole seam cutting quality mainly depends on the precision of seam width, hole seam cross-section shape neat degree, on the edge of the hole seam smoothness and the degree of corrosion resistance of hole seam.
Straight Slots – Slots are cut with equal width through the wall of the pipe both ID and OD. Specified where sand grain bridging at the slot is not of major importance, straight slots are more wear-resistant than seamed keystone slots and are less costly to produce. Common applications of Straight cut slots are for Cold Production and CBM horizontal wells in addition to SAGD injector wells.

Seamed Keystone Slots – -are milled wider on the pipe interior and are self cleaning to help prevent plugging. Narrow at the liner surface and increasing in width at the interior, they let sand that does enter pass easily through the slots without plugging.
Technical data
API Casing pipe ID
mm
Length
m
Slot Length
mm
Slot No.
No./m
Slot width 
mm
Slot 
Tolerance
Valid Filter
Area
cm/m
Max.
Strength
KN
Spec
mm
Thickness
mm
Per Weight 
kg/m
60.32 5 6.84 50.3 3 80 200 0.3 ±50 48 512.54
73.02 5.5 9.15 62 240 57.6 688.55
88.9 6.5 13.22 75.9 280 67.2 995.1
101.6 6.5 15.22 88.6 300 72 1151.2
114.3 7 18.47 100.3 10 320 76.8 1400.4
127 7.52 22.13 112 340 81.6 1673.8
139.7 7.72 25.11 124.3 360 86.4 1900.2
9.17 29.48 121.4 360 86.4 2232.4
168.3 8.94 35.09 150.4 400 96 2672.95
177.8 8.05 33.68 161.7 440 105.6 2559.2
9.19 38.19 159.4 440 105.6 2940.7
 
Sreen pipe dimension (in) OD(mm) Wall thickness(mm) ID (mm) Stitch number of each circle Slot width(mm) Slot length (mm) Length(mm)
2-3/8″ 60.3 4.83 50.64 12~18 0.2~0.8 45~100 1000~12000
2-7/8″ 73 5.51 61.98 20~24 45~100
3-1/2″ 88.9 6.45 76 24~28 45~100
4″ 101.6 6.65 88.29 24~30 45~100
4-1/2″ 114.3 5.69 102.92 24~30 45~100
6.35 101.6 45~100
7.37 99.57 45~100
8.56 97.18 45~100
5″ 127 5.59 115.82 28~36 0.25~0.8 45~100
6.43 114.15 45~100
7.52 111.96 45~100
9.19 108.61 45~100
5-1/2″ 139.7 6.2 127.3 30~38 45~100
6.99 125.73 45~100
7.72 124.26 45~100
9.17 121.36 45~100
10.54 118.62 45~100
7″ 177.8 6.91 163.98 36~50 45~100
8.05 161.7 45~100
9.19 159.41 45~100
10.36 157.07 45~100

1. Our perforated pipe use J55/K55/N80 casing and tubings of API standard, with High overall strength, not    so easy to deformation.
2. The edge of the slot is vertical, smooth, without burrs, and the slot is uniformity.
3. The perforated pipe is suitable for sandy well, which the diameter of the sand greater than 0.3mm.
4. The slot can be longitudinal and transverse, the section of the slot can be parallel and trapezoidal types, with a wide open area.
5. Slotted screen pipe has a big inner diameter.
Standard
API Spec 5CT – Specification 5CT/ISO 11960, Specification for Casing and Tubing, Eighth Edition, Petroleum and natural gas industries-Steel pipes for use as casing or tubing for wells
Standard Grade Chemical compositions(%)
API SPEC 5CT J55 C Si Mn P S Cr Ni Cu Mo V
K55 0.34~0.39 0.20~0.35 1.25~1.50 ≤0.020 ≤0.015 ≤0.15 ≤0.20 ≤0.20 / /
N80 0.34~0.38 0.20~0.35 1.45~1.70 ≤0.020 ≤0.015 ≤0.15 / / / 0.11~0.16
L80 0.15~0.22 ≤1.00 0.25~1.00 ≤0.020 ≤0.010 12.0~14.0 ≤0.20 ≤0.20 / /
P110 0.26~0.395 0.17~0.37 0.40~0.70 ≤0.020 ≤0.010 0.80~1.10 ≤0.20 ≤0.20 0.15~0.25 ≤0.08

Mechanical Properties
Grade Type Total elongation under load (%) Yield strength (min) Yield strength (max) Tensile strength min Mpa Hardness Max (HRC) Hardness Max(HBW)
J55 - 0.5 379 552 517 - -
K55 - 0.5 379 552 655 - -
N80 1 0.5 552 758 689 - -
N80 Q 0.5 552 758 689 - -
L80 1 0.5 552 655 655 23 241
L80 9Cr 0.5 552 655 655 23 241
L80 13Cr 0.5 552 655 655 23 241
C90 - 0.5 621 724 689 25.4 255
C95 - 0.5 655 758 724 - -
T95 - 0.5 655 758 724 25.4 255
P110 - 0.6 758 965 862 - -
Q125 All 0.65 862 1034 931 - -

Packing
Single with bubble bag and then in wooden case (fumigation certificate). Each case is clearly marked with:
1. Name & identification mark of manufacturer-HuaDong Brand
2. Batch number
3. Date of manufacturer
4. Material
5.Safe heating & application temperature












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