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API Spiral Grooved Drill Collar for Oil Well Drilling, Oil Country Tublar Goods

FOB Price

Negotiable / Piece

1 Piece(Min.Order)

Supply Ability 100000 Piece / Pieces per Month
Payment Terms:T/T

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Product Details

Place of Origin:

China

After-sales Service Provided:

No overseas service provided

Product Description

This type of drill collar is made of 4145H or 4145H modified alloy steel and has spiral grooves on the pipe body of drill collar. This will decrease the surface area contacted with the hole of the oil well, which will greatly reduces the probability of pressure differential detention occurring.

Grooved Drill Collar

OD Range (in)	4-4 3/8	4 1/2-5 1/8	5 1/4-6 3/8	6 1/2-7	7 1/8-7 7/8	8-8 7/8	9-9 7/8
Depth of cut (in)	6 2/3 ± 1/32	7/32 ± 1/32	1/4 ± 1/32	5/16 ± 1/16	11/32 ± 1/16	3/8 ± 1/16	13/32 ± 3/32
Spiral Pitch (in)	36 ± 1	38 ± 1	42 ± 1	42 ± 1	64 ± 1	68 ± 1	72 ± 1

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API Spiral Grooved Drill Collar for Oil Well Drilling, Oil Country Tublar Goods

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