We use cookies and other tracking technologies to improve your browsing experience on our website, to show you personalized content and targeted ads, to analyze our website traffic, and to understand where our visitors are coming from.
Accept
Decline
High Speed Of Oil Field Drill Collars-CONTINENTAL STEEL CO.,LTD
English Español
BLOGS
Home BLOGS Back

High Speed Of Oil Field Drill Collars

Oct 23, 2023

High Speed Of Oil Field Drill Collars

Chemical composition

Grade

Chemical composition %

C

Si

Mn

P

S

Cr

Mo

Ni

With

To the

V

4145HMOD

0.42   ～

0.49

0.15 ～0.35

1.00 ～1.25

≤ 0.025

≤ 0.025

1.00 ～1.35

0.30-0.35

≤ 0.25

≤ 0.35

≤ 0.05

0.03 ~ 0 . 08

 

Mechanical properties of drill collars

Outer diameter range

Yield strength R t

Tensile strength R m

Elongation A%

Brinell hardness HB

Charpy impact energy AkvJ

mm

in

MPa

MPa

      

79.4 — 171.4

3 1/8 — 6 3/4

≥758

≥965

≥13

285 — 341

≥54 or ≥70

177.8 — 279.4

7 — 11

≥689

≥930

≥13

285 — 341

≥54 or ≥70

Mechanical properties of drill collars

Outer diameter range

Yield strength R t

Tensile strength R m

Elongation A%

Brinell hardness HB

Charpy impact energy AkvJ

mm

in

MPa

MPa

      

79.4 — 171.4

3 1/8 — 6 3/4

≥758

≥965

≥13

285 — 341

≥54 or ≥70

177.8 — 279.4

7 — 11

≥689

≥930

≥13

285 — 341

≥54 or ≥70

 

Chemical composition

Grade

Chemical composition %

C

Si

Mn

P

S

Cr

Mo

Ni

With

To the

V

4145HMOD

0.42   ～

0.49

0.15 ～0.35

1.00 ～1.25

≤ 0.025

≤ 0.025

1.00 ～1.35

0.30-0.35

≤ 0.25

≤ 0.35

≤ 0.05

0.03 ~ 0 . 08

 

Drill collar specifications OD ID Length Length Chamfer diameter Champher Reference curved Bending strength Proportion
mm in mm in   mm Intensity ratio
NC23-31 79.4 3 1/8 31.8 11/4 9150 76.2 2.57:1
NC26-35(2 3/8IF) 88.9 3 1/2 38.1 11/2 9150 82.9 2.42:1
NC31-41 (2 7 / 8IF) 104.8 4 1/8 50.8 2 9150 100.4 2.43:1
NC35-47 120.7 4 3/4 50.8 2 9150 114.7 2.58:1
NC38-50 (3 1 / 2IF) 127.0 5 57.2 2 1/4 9150 or 9450 121.0 2.38:1
NC44-60 152.4 6 57.2 2 1/4 9150 or 9450 144.5 2.49:1
NC44-62 158.8 6 1/4 57.2 2 1/4 9150 or 9450 149.2 2.91:1
NC44-62(4IF) 158.8 6 1/4 71.4 2 13/16 9150 or 9450 150.0 2.63:1
NC46-65(4IF) 165.1 6 1/2 57.2 2 1/4 9150 or 9450 154.8 2.76:1
NC46-65(4IF) 165.1 6 1/2 71.4 2 13/16 9150 or 9450 154.8 3.05:1
NC46-67(4IF) 171.4 6 3/4 57.2 2 1/4 9150 or 9450 159.5 3.18:1
NC50-67(4 1/2IF) 171.4 6 3/4 71.4 2 13/16 9150 or 9450 159.5 2.37:1
NC50-70(4 1/2IF) 177.8 7 57.2 2 1/4 9150 or 9450 164.7 2.54:1
NC50-70(4 1/2IF) 177.8 7 71.4 2 13/16 9150 or 9450 164.7 2.73:1
NC50-72(4 1/2IF) 184.2 7 1/4 71.4 2 13/16 9150 or 9450 169.5 3.12:1
NC50-77 196.8 7 3/4 71.4 2 13/16 9150 or 9450 185.3 2.70:1
NC50-80 203.2 8 71.4 2 13/16 9150 or 9450 190.1 3.02:1
6 5/8REG 209.6 8 1/4 71.4 2 13/16 9150 or 9450 195.7 2.93:1
NC61-90 228.6 9 71.4 2 13/16 9150 or 9450 212.7 3.17:1
7 5/8REG 241.3 9 1/2 76.2 3 9150 or 9450 223.8 2.81:1
NC70-97 247.6 9 3/4 76.2 3 9150 or 9450 232.6 2.57:1
NC70-100 254.0 10 76.2 3 9150 or 9450 237.3 2.81:1
8 5/8REG 279.4 11 76.2 3 9150 or 9450 266.7 2.84:1
OCTG - Drill Stem SubBack to Products Non-magnetic high strength drill collar

Casing Manufacturing Process

Introduction to ASTM B861 for seamless titanium pipes

Introduction to ASTM B861 for seamless titanium pipes

Posted: Apr 30, 2024
Grade 5 titanium alloy Ti6Al4V PIPE

Grade 5 titanium alloy Ti6Al4V PIPE

Posted: Apr 29, 2024
Titanium CP Grade 2 pipe

Titanium CP Grade 2 pipe

Posted: Apr 26, 2024
ASTM Grade 7, UNS R52400, CP Titanium, C.P. Titanium Alloy

ASTM Grade 7, UNS R52400, CP Titanium, C.P. Titanium Alloy

Posted: Apr 23, 2024
CONTINENTAL STEEL CO.,LTD

Continental Steel Co.,Ltd(CSC) is a pioneering manufacturer, stockist, and supplier of steel pipe products.

Get a Quote

Quick Link

HOME COMPANY PRODUCTS QUALITY SERVICE PROJECTS BLOGS CONTACT

Products

OCTG Carbon steel Seamelss pipe Carbon welded steel pipe Stainless Steel Products Anti-corrosion coated steel pipe Alloy seamless steel pipe Pipe Fitting Steel Hollow Section Steel Metal Steel Profile

Contact Us

CONTINENTAL STEEL CO.,LTD