Drill Collar
Standard:API SPEC 7-1
Steel grade:AISI 4145H
Sizes:3 1/8" -- 11"
Connected Type:NC, IF, REG
Classification :
Drill Collar
PRODUCT DETAILS
Description
API SPEC 7-1 drill collar is made with rolling or forging AISI4145H chromium molybdenum alloy steel. Therefore, it needs to control chemical composition and the content of trace elements effectively.
Specification&Standard
|
Standard |
Number |
OD |
ID |
Length |
Weight |
Typical Bending |
|
SY5144-2007/API7-1 |
NC 23-31 |
3-1/8 |
1-1/4 |
30 |
22 |
2.57:1 |
|
NC 26-35 (2-3/8 IF) |
3-1/2 |
1-1/2 |
30 |
27 |
2.42:1 |
|
|
NC 31-41 (2-7/8 IF) |
4-1/8 |
2 |
30 or 31 |
34 |
2.43:1 |
|
|
NC 35-47 |
4-3 /4 |
2 |
30 or 31 |
47 |
2.58:1 |
|
|
NC 38-50 (3-1/2 IF) |
5 |
2-1/4 |
30 or 31 |
54 |
2.38:1 |
|
|
NC 44-60 |
6 |
2-1/4 |
30 or 31 |
83 |
2.49:1 |
|
|
NC 44-60 |
6 |
2-13 /16 |
30 or 31 |
76 |
2.84:1 |
|
|
NC 44-62 |
6-1/4 |
2-1/4 |
30 or 31 |
91 |
2.91:1 |
|
|
NC 46-62 (4 IF) |
6-1/4 |
2-13 /16 |
30 or 31 |
84 |
2.63:1 |
|
|
NC 46-65 (4 IF) |
6-1/2 |
2-1/4 |
30 or 31 |
100 |
2.76:1 |
|
|
NC 46-65 (4 IF) |
6-1/2 |
2-13 /16 |
30 or 31 |
93 |
3.05:1 |
|
|
NC 46-67 (4 IF) |
6-3 /4 |
2-1/4 |
30 or 31 |
109 |
3.18:1 |
|
|
NC 50-70 (4-1/2 IF) |
7 |
2-1/4 |
30 or 31 |
118 |
2.54:1 |
|
|
NC 50-70 (4-1/2 IF) |
7 |
2-13 /16 |
30 or 31 |
111 |
2.73:1 |
|
|
NC 50-72 (4-1/2 IF) |
7-1/4 |
2-13 /16 |
30 or 31 |
120 |
3.12:1 |
|
|
NC 56-77 |
7-3 /4 |
2-13 /16 |
30 or 31 |
140 |
2.70:1 |
|
|
NC 56-80 |
8 |
2-13 /16 |
30 or 31 |
151 |
3.02:1 |
|
|
6-5/8 API Reg |
8-1/4 |
2-13 /16 |
30 or 31 |
162 |
2.93:1 |
|
|
NC 61-90 |
9 |
2-13 /16 |
30 or 31 |
196 |
3.17:1 |
|
|
7-5/8 API Reg |
9-1/2 |
3 |
30 or 31 |
217 |
2.81:1 |
|
|
NC 70-97 |
9-3 /4 |
3 |
30 or 31 |
230 |
2.57:1 |
|
|
NC 70-100 |
10 |
3 |
30 or 31 |
243 |
2.81:1 |
|
|
8-5/8 API Reg |
11 |
3 |
30 or 31 |
300 |
2.84:1 |
|
Sreel Mark |
Chemical Composition % |
||||||||
|
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Cu |
Al |
|
|
4145H |
0.42~0.48 |
0.15~0.35 |
0.90~1.20 |
≤0.03 |
≤0.03 |
0.90~1.20 |
0.15~0.25 |
≤0.2 |
0.025~0.045 |
|
Other Elements:N≤0.015,Ni≤0.5 |
|||||||||
|
Drill Collar Mechanical Performance |
||||||||
|
Drill Collar Outside Diameter Range |
Yield Strength |
Tensile Strength |
Elongation |
|
Charpy Impact |
|||
|
mm |
in |
MPa |
Psi |
MPa |
Psi |
|||
|
79.4~171.4 |
3-1/8~6-3/4 |
≥758 |
≥110000 |
≥965 |
≥140000 |
≥13 |
285~341 |
≥54 |
|
177.8~279.4 |
7~11 |
≥689 |
≥100000 |
≥930 |
≥135000 |
≥13 |
285~341 |
≥54 |
|
Under special conditions, the impact work of the charpy can be determined as greater than 70J according to the supply and demand |
||||||||
Process
In the process of heat treatment, the drill collar has added a special normalizing process, which makes the thread part grain more refined, enhances the drill collar thread strength, and effectively improves the service life of the drill collar.
Packing
Packaging and delivery
The company has the Shandong Dayang Steel Pipe Production Base Warehouse Area, Dadong Steel Pipe City Boutique Goods Yard Sales Area, etc., with an annual inventory of 70,000 tons.The annual round steel trade volume is 650,000 tons, with 50,000 tons of spot goods throughout the year, and the output value is about 6 billion yuan. The factory has eight pipe expansion production lines, mainly producing 300-1500mm outer diameter, with an annual output of 80,000 tons.
Customer visit
Adhering to the tenet of "strict management, good reputation, strong strength, and high-quality service", the company serves customers and friends at home and abroad with high standards of scientific environmental protection, professional innovation, and currently exports to more than 150 countries and regions in Europe, America, South America, the Middle East, Asia, etc., and the products are well received by everyone!
Factory
The factory focuses on the research and development and manufacturing of seamless steel pipes, oil casing processing for oil fields and gas cylinder steel pipe products. It currently has one hot-rolled seamless steel pipe production line. The production process of the hot-rolled seamless steel pipe production line adopts conical perforation, precision pipe rolling and three-roller micro-tension sizing. The production specifications are: Φ50-Φ273mm, wall thickness: 4.5-40mm, and the online equipped ultrasonic flaw detection system, eddy current flaw detection system and other product detection systems have reached the industry leading level.
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Chida Road Donger County Liaocheng City Shandong China
