Oilfield Drilling Kellys from China
Square Kelly for oilfield drilling equipments
4145H mod Downhole Drilling Tools Drill Collars
Itis made from AISI 4145H alloy steel acc. to API Spec.7 and SY/T6509.It is formed by hot forged and fully heattreated by intermediate frequency induction heat treatment or 20m horizontal optical resistance furnace to gain high physical properties in length. All threads are phosphate, copperized or cold worked.
Kelly Size | Length of Drive Section | Length Overall | Drive Section | ||||||||
Standard LD | Optional LD | Standard L | Optional L | Across Flats DFL | Across Corners EC | Across Corners DCC | CC | Radius RCC | Min. Wall ECC. Boret | ||
76.2 | (3) | 11280 | 12190 | 76.2 | 85.7 | 85.73 | 6.4 | 42.9 | 12.1 | ||
88.9 | (3 1/2) | 11280 | 12190 | 88.9 | 100.8 | 100.00 | 6.4 | 50.0 | 13.3 | ||
108.0 | (4 1/4) | 11280 | 15540 | 12190 | 16460 | 108.0 | 122.2 | 121.44 | 9.9 | 60.7 | 15.9 |
133.4 | (5 1/4) | 11280 | 15540 | 12190 | 16460 | 133.4 | 151.6 | 149.86 | 9.5 | 75.0 | 15.9 |
133.4 | (5 1/4) | 11280 | 15540 | 12190 | 16460 | 133.4 | 151.6 | 149.86 | 9.5 | 75.0 | 15.9 |
152.4 | (6) | 11280 | 15540 | 12190 | 16460 | 152.4 | 173.0 | 173.02 | 9.5 | 86.5 | 15.9 |
152.4 | (6) | 11280 | 15540 | 12190 | 16460 | 152.4 | 173.0 | 173.02 | 9.5 | 86.5 | 15.9 |
Kelly Size | Upper Box Connection | Lower Pin Connection | Inside | ||||||||||
size and style LH | Outside Diameter | Bevel Diameter | Size and Style | Outside | Length | Bevel Diameter | |||||||
Standard | Optional | Standard | Optional | Length LU | Standard DF | Optional DF | |||||||
76.2 | (3) | (6-5/8)REG | (4-1/2)REG | 196.9 | 146.1 | 406.4 | 186.1 | 134.5 | NC26 | 85.7 | 508 | 82.9 | 31.8 |
88.9 | (3 1/2) | (6-5/8)REG | (4-1/2)REG | 196.9 | 146.1 | 406.4 | 186.1 | 134.5 | NC31 | 104.8 | 508 | 100.4 | 44.5 |
108.0 | (4 1/4) | (6-5/8)REG | (4-1/2)REG | 196.9 | 146.1 | 406.4 | 186.1 | 134.5 | NC38 | 120.7 | 508 | 116.3 | 57.2 |
133.4 | (5 1/4) | (6-5/8)REG | 196.9 | 406.4 | 186.1 | NC46 | 158.8 | 508 | 145.3 | 71.4 | |||
133.4 | (5 1/4) | (6-5/8)REG | 196.9 | 406.4 | 186.1 | NC50 | 161.9 | 508 | 154.0 | 71.4 | |||
152.4 | (6) | (6-5/8)REG | 196.9 | 406.4 | 186.1 | 5 1/2FH | 177.8 | 508 | 170.7 | 82.6 | |||
152.4 | (6) | (6-5/8)REG | 196.9 | 406.4 | 186.1 | NC56 | 177.8 | 508 | 171.1 | 82.6 | |||
Pictures
About us
We specialize in producing and selling API standard drill pipe from 2-3/8''OD to 5-1/2''''OD.with steel grade E75,X95,G105,S135.We can supply both NC,IF,FH connection type and special connection type as HT55.Mainly used in oil and gas exploration and development process of deep well,horizontal well and extended reach well.
Drill pipe is a portion of the overall drill string. The drill string consists of both drill pipe and the drill stem which is the tubular portion closest to the bit or downhole assembly. Drill pipe and drill stems can be differentiated in that the drill pipe is quite flexible and produced in longer segments whereas the drill stem is much more rigid and manufactured in shorter task specific segments.
More detailed photos as for your reference:
Drill Pipe Feature:
A. High precision in size and shape
B. Good low temperature toughness
C. Excellent comprehensive mechanical properties
D. High connection strength and sealability
E. Large inside diameter of tool joint
F. Hightorque resistance
G. High fatigue strength and long fatigue life
Internal Coating Feature:
A.High abrasion resistance and low friction factor
B. Good adhesion and flexility
C. High application temperature and pressure
D. High hardness and impact resistance
E. Good corrosion resistance
Hardbanding Feature:
A. Good balance between antiwear and friction-reduction
B. The wear rate is less than 6% of that of bare tool joint, which can prolong 3 times of the
tool joint service life
C. Good property of friction-reduction, which can reduce the casing wear to the least, and its
wear to casing is less than 11% of that of bare tool joint
D. Reduce the torque of drilling string
E. Good weldablity with little splash and good rewelding preformance
F. Friendly to environment
Our Production Line
About delivery:
About Logo: KW, we can produce according to customer requirements.
About Quality: All the products with API, low price are not -API, cannot be exported.
About Warranty: Warranty period is 1 year after installation.
About Payment: 30% of the advance payments, delivery time, please pay 70%.
About Ttechnical Documents: I submit the following accompanying technical information in English,
A: Test Report in accordance with the appropriate API or national test standards outline
B. Commerial Invoice
C: Original copy of quality certificate
D: Packing List
E: The chemical element ,Mechanical properties.
About Service:
We believe in Customer delight, achieved by the supply of Quality Products & Services and Continual Improvement in our Manufacturing Processes for timely delivery at competitive prices. We work in a professional, competitive, and cost-effective manner consistent with the Customer requirement.
Any Inquiry or Advance will be highly appreciated!
