Safety Precautions for Drilling Machine Operation
Release time:
2021-04-29
Drilling machine is used for drilling key machinery and equipment, in the application of drilling machine, safety is the most important, the following to understand the drilling machine in drilling some common safety problems:
1. Spot shot inclinometer must be carried out before the square drilling tool is drilled and does not receive a single strip. The inclinometer is carried out in the middle of tripping, and the theme activity drilling equipment is carried out every 1-2 minutes, with a spacing of not less than 2 meters.
2, drilling often check the weight indicator, pump pressure gauge standard value, found that the suspension weight is reduced, pump pressure is reduced immediately search for the reason, first find the road surface reason, road surface reason removal has not recovered, immediately pull out for inspection.
3. During drilling, attention should be paid to the amount of sand on the vibrating screen. If gravel increases, it should be observed whether the sand sample collapses. If it is found that the sand is reduced and the drilling fluid characteristics are changed, and the rock carrying capacity is poor, certain effective measures should be taken immediately to solve the problem.
4. After tripping in, the drill bit leaves the well 2-3 meters lower (usually a single bar is mentioned) and the pump is started. When the pump is started, the diesel engine speed is 800-900 r/min. The pump pressure at the edge of the riser rises to 5CPA to pick up the pump, and then starts after lowering. The game will be played several times more. After the drilling fluid is returned from the wellbore, the pump will continue to run. The speed ratio of the diesel engine is adjusted to the speed ratio during drilling 1150-1200 r/min. After the pump pressure is stable, the drill bit will lower the stop well at a slow speed, the extrusion will rotate slowly and stably to touch the geological structure, the cone bit will run for 30 minutes, the PDC bit well will be drilled for 0.3 meters with a low shape design, and then all drilling will be normal according to the main drilling parameters of the design scheme.
5. Drill delivery: The spiritual essence should be centralized, and it can be delivered by point or slip. It is stipulated that the drilling shall be well-proportioned, and the weight indicator shall be seen. In addition, the rate of discharge of the barrel or the big rope shall be checked to ensure that the drilling pressure is closely followed and the drilling is not slipped. Do not charge the bit to start the disc.
6. Before receiving a single strip, the drilling pressure should be slowly reduced to make the drill have a larger expansion space, reduce the overpressure of the drill bit, and increase the application of the drill bit.
Above is a detailed explanation of some common safety problems of drilling machine equipment during drilling. Mastering this professional knowledge is very useful for many people.
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