| Customization: | Available |
|---|---|
| Color: | Black |
| Usage: | Petroleum Coke |
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The drill collar is located at the bottom of the drill string and is the main component of the lower drilling tool assembly. Its main feature is a large wall thickness (usually 38-53mm, equivalent to 4-6 times the wall thickness of the drill pipe), with a large gravity and stiffness. For the convenience of drilling, elevator slots and slip slots can be machined on the outer surface of the internal thread of the drill collar.
Drill pipe is a type of steel pipe with a threaded tail, used to connect surface equipment of a drilling rig to drilling and grinding equipment or bottom hole devices located at the bottom of the drilling rig. The purpose of the drill pipe is to transport drilling mud to the drill bit and raise, lower, or rotate the bottom hole device together with the drill bit.
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Size
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Weight
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Outside
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Wall
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|||
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Designation
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Designation lb/ft
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Diameter
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Thickness
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|||
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|
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ln.
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mm
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ln.
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mm
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|
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4 1/2"
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9.5~15.10
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4.5
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114.3
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0.205~0.337
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5.21~8.56
|
|
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5"
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11.50~24.10
|
5
|
127
|
0.220~0.500
|
5.59~12.70
|
|
|
5 1/2"
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14.00~43.10
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5.5
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139.7
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0.244~0.875
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6.20~22.23
|
|
|
6 5/8"
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20.00~32.00
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6.625
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168.28
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0.288~0.475
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7.32~12.06
|
|
|
7"
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17.00~57.10
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7
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177.8
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0.231~0.875
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5.87~22.23
|
|
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7 5/8"
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24.00~55.30
|
7.625
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193.68
|
0.300~0.687
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7.62~19.05
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|
|
7 3/4"
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46.1
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8.625
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219.08
|
0.595
|
15.11
|
|
|
8 5/8"
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24.00~49.00
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8.625
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219.08
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0.264~0.557
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6.71~14.15
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|
|
9 5/8"
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32.30~75.60
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9.625
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244.48
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0.312~0.797
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7.92~20.24
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|
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10 3/4"
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32.75~85.30
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10.75
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273.05
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0.279~0.797
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7.09~20.24
|
|
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11 3/4"
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42.00~71.00
|
11.75
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298.45
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0.333~0.582
|
8.46~14.78
|
|
|
13 3/8"
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48.00~72.00
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13.375
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339.73
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0.330~0.514
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8.38~13.06
|
|
Manufacturing using AISI4145H chromium molybdenum alloy steel by rolling or forging, effectively controlling the chemical composition and trace element content.
(1) Apply drilling pressure to the drill bit;
(2) Ensure necessary strength under compression conditions;
(3) Reduce the vibration, swinging, and jumping of the drill bit to ensure smooth operation of the drill bit;
(4) Control well inclination.
1.One stop service. We provide various drilling equipment and accessories for overseas clients in different drilling fields. Including oil drilling and repair machines, horizontal drilling rigs, horizontal directional drilling rigs, mud pumps and accessories, solid control systems and equipment, etc. It can meet various needs of customers.
2. Quality assurance. Our supplier's products are strictly produced according to standards and provide corresponding after-sales service to customers, actively handling and solving a series of problems encountered by customers during use.
3. Professional team. In terms of production research, we have sufficient technical talents to support the product production line and ensure product quality; In terms of sales, we have professional and enthusiastic service personnel to ensure the sales and after-sales service of our products, and to ensure the stability and durability of our cooperative relationship.
4. Fast delivery. Our company has dedicated tracking personnel to ensure the normal production and delivery of orders.
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