What are the four ways to classify oil rigs?
Release time:
2020-05-14
With the continuous development of drilling production, the use conditions of drilling rigs are becoming more and more diversified, and various types of drilling rigs have appeared accordingly. Factors affecting the type and composition of the drilling rig are drilling method, drilling depth, hole size and drilling tool size.
Conditions in the drilling area (e. g. power or fuel, transportation, meteorological conditions), etc.
1. by drilling method
(1) impact drill, such as wire rope impact drill (drill), vibration drill, etc.
(2) Rotary drilling rigs, such as drilling rigs used in rotary drilling.
(3) Downhole power drilling tools, such as rotary drilling tools, turbine drilling tools, screw drilling tools, electric drilling tools, etc.
2. divided by drilling depth
(1) Ultra-deep well drilling rig. A drilling rig with a diameter of 114mm drill pipe, a nominal drilling depth range of 7000 meters or more, and a maximum hook load of 4500 kN or more is used.
(2) Deep well drilling rig. A drilling rig with a diameter of 114mm drill pipe, a nominal drilling depth range of 4000-7000 meters or more, and a maximum hook load of 2250-4500 kN or more is adopted.
(3) Medium-deep well drilling rig. A drilling rig with a diameter of 114mm drill pipe, a nominal drilling depth range of 1500-4000 meters or more, and a maximum hook load of 900-2250 kN or more is adopted.
3. by power equipment
(1) Diesel engine-driven drilling rig, a drilling rig powered by diesel engine through mechanical transmission or hydraulic transmission.
(2) AC drive drilling rig, suitable for oil field with industrial power grid.
(3) The drilling rig is driven by DC power, and the working unit is driven by DC motor.
4. divided by driving mode
(1) separate drive. Each working machine individually selects generators of different sizes to drive, and is mostly used for electric drive. Its transmission is simple and easy to install, but its power utilization rate is low and the total quality of the equipment is large.
(2) unified drive. The three working units of drawworks, drilling pump and rotary table are driven by the same power unit. Most drilling rigs use this solution. The unified drive can also include only one drilling pump, and the other drilling pump can be driven separately. unified drive
The power utilization rate of the moving drilling rig is high, and the engine can be adjusted to each other when the engine fails, but the transmission is complicated, the installation and adjustment are difficult, and the transmission efficiency is low.
(3) group driven. The combination of power is between individual drive and unified drive, and there are two options for the three working machines. The power utilization rate of this drilling rig is higher than that of a separate drive, the transmission ratio is unified and simple to drive, and two sets of working machines can also be
Installed on different heights and scattered sites.
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