Company Info
Derun Energy Co.,Ltd is the international business company of Shandong Luhai Petroleum Technology Co., Ltd. (Stock Code:832799) Shandong Luhai was founded in year 2008, which is a high-tech enterprise of producing drilling equipments and tools. Main products involve in well drilling, well cementing, well completion, and oil extraction, including more than ten series, hundreds of varieties of drilling equipment, accessories and tools. Especially, drilling motors, drill pipes, drill collars, dril... view more
Company Profile
Year Company Registered:
2016-02-01
Annual Sales Amount:
US$5 – 10 Million
Total No. of Staff:
101 – 500 People
No. of R&D Staff:
11 – 20 People
No. of Engineers:
11 – 20 People
Export Ratio:
51% – 60%
OEM Services Provided:
YES
Payment Terms:
T/T, L/C
Business Type:
Manufacturer
Quality Certificate:
ISO9001, ISO14010, ISO9001:2008
Main Export Markets:
North America, Western Europe, Eastern Europe, South America, Southeast Asia, Eastern Asia, Mid East, Oceania, Africa
Basic Info.
Brand Name:DERUN
drill collar:non-magnetic drill collar
Place of Origin: Beijing
Min.Order: 1 Piece/Pieces
Means of Transport:Ocean, Air, Land
Supply Capacity
OD
ID
Length
mm
Bevel Diameter
mm
Connection
Bending Strength Ratio
in
mm
in
mm
3-1/8
79.4
1-1/4
31.8
9150
76.2
NC23-31
2.57: 1
3-1/2
88.9
1-1/2
38.1
9150
82.9
NC26-35 ( 21/8IF)
2.42 :1
4-1/8
104.8
2
50.8
9150
100.4
NC31-41 ( 27/8IF )
2.43 :1
4-3/4
120.7
2
50.8
9150
114.7
NC35-47
2.58 :1
5
127
2-1/4
57.2
9150
121.0
NC38-50 ( 31/2IF )
2.38:1
6
152.4
2-1/4
57.2
9150 or 9450
144.5
NC44-60
2.49:1
6
152.4
2-13/16
71.4
9150 or9450
144.5
NC44-60
2.84:1
6-1/4
158.8
2-1/4
57.2
9150 or 9450
149.2
NC44-62
2.91:1
6-1/4
158.8
2-13/16
71.4
9150 or 9450
150.0
NC46-62 ( 4IF )
2.63:1
6-1/2
165.1
2-1/4
57.2
9150 or 9450
154.8
NC46-65 ( 4IF)
2.76:1
6-1/2
165.1
2-13/16
71.4
9150 or 9450
154.8
NC46-65 ( 4IF )
3.05:1
6-3/4
171.4
2-1/4
57.2
9150 or 9450
159.5
NC46-67 ( 4IF )
3.18:1
6-3/4
171.4
2-13/16
71.4
9150 or 9450
159.5
NC50-67( 41/2IF )
2.37:1
7
177.8
2-1/4
57.2
9150 or 9450
164.7
NC50-70 ( 41/2IF )
2.54 :1
7
177.8
2-13/16
71.4
9150 or 9450
164.7
NC50-70( 41/2IF )
2.73 :1
7-1/4
184.2
2-13/16
71.4
9150 or 9450
169.5
NC50-72 ( 41/2IF )
3.12 :1
7-3/4
196.8
2-13/16
71.4
9150 or 9450
185.3
NC56-77
2.70 :1
8
203.2
2-13/16
71.4
9150 or 9450
190.1
NC56-80
3.02 :1
8-1/4
209.6
2-13/16
71.4
9150 or 9450
195.7
65/8REG
2.93: 1
9
228.6
2-13/16
71.4
9150 or 9450
212.7
NC61-90
3.17 :1
9-1/2
241.3
3
76.2
9150 or 9450
223.8
75/8REG
2.81 :1
9-3/4
247.6
3
76.2
9150 or 9450
232.6
NC70-97
2.57 :1
10
254
3
76.2
9150 or 9450
237.3
NC70-100
2.81: 1
11
279.4
3
76.2
9150 or 9450
266.7
85/8REG
2.84 :1
Mechanical Properties of Non-magnetic Drill Collar
Drill Collar O.D. Range
Yield Strength
Mpa
Tensile Strength Mpa
Elongation(min) with Gage Length 4 times Diameter
Brinnel
Hardness (Min)
Min. Charpy Impact Value Ft. lb.
mm
in
79.4~171.4
3 1/8" ~6 3/4"
≥758
≥827
≥18
285
40
177.4~279.4
7"~ 11"
≥689
≥758
≥20
277
40
Magnetic Properties of Non-magnetic Drill Collar: When MPS=1 ×105/4πA/m: Relative magnetic permeability μ r ≤ 1.1010 Magnetic Field Gradient △ B ≤ 0.05 μT
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Contact Method
Luhai Energy Co.,Ltd
Room 2101, Building 1, No 6 Shuguang Xili, Chaoyang Dist.,
Beijing,
China (Mainland)
