Integral Spiral Blade Stabilizer
♦ The Petroleum drilling tools of Zhongzhong's mainly include Drill collars, Spiral drill collars, Non magnetic drill collars, Short drill collars, Drill tool stabilizers, Non magnetic drill tool stabilizers, Integral heavy weight drill pipes, etc.
♦ The details of Non magnetic Stabilizer as follows,
1. Material: Non magnetic steel
2. Types: Drill String type and Near bit type.
3. Mechanical properties:
a). Tensile Strength: ≥120KSI
b). Yield Strength: ≥100KSI
c). Hardness: ≥285HB
4. Magnetic permeability(MPS=1×105/4∏A/m)
a). Average: Ur<1.010
b). Magnetic Field Gradient: ΔB≤0.05μT
5. Standard: API Spec 7-1 or SY/T5051-91Standard.
6. Inspection&Test: When producing, traceability are maintained from the receipt of raw material to completion of final products, and serial numbers are die-stamped on each workpiece body. During each manufacturing process, inspection and test are performed.
7. Specification:
Bit Size (in) | Working OD (mm) | End OD of body(mm) | ID (mm) | Length (mm) | Thread code on both ends | |||
Drill string type | Near bit type | |||||||
Top | Down | Top | Down | |||||
6 | 152.2 | 121 | 51 | 1200 | NC38 | 3 1/2 REG | ||
6 1/4 | 158.7 | |||||||
6 1/2 | 165.1 | |||||||
7 1/2 | 190.5 | 159 | 57 | 1600 | NC46 | 4 1/2 REG | ||
7 7/8 | 200 | |||||||
8 3/8 | 212.7 | 159 | 71 | 1600 | NC46 | |||
8 1/2 | 215.2 | 159 | ||||||
8 3/4 | 222.2 | |||||||
9 1/2 | 241.3 | 178 | 1600 | NC50 | NC50 | NC50 | ||
9 5/8 | 244.5 | 1800 | 6 5/8 REG | |||||
9 7/8 | 250.8 | |||||||
12 1/4 | 311.2 | 203 | 76 | 1800 | NC56 | NC56 | NC56 | 6 5/8 REG |
16 | 406 | 229 | 2000 | NC61 | NC61 | NC61 | NC61 | |
17 1/2 | 444.5 | |||||||
24 | 609.6 | |||||||
26 | 660.4 | |||||||
28 | 711.2 | |||||||
Note: Stabilizer can be made according to customer’s special requirement. |