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2021-051, collapse holeDuring the infusion process, if the mud level in the wellbore casing slurry suddenly rises and overflows the casing, and then suddenly drops and bubbles appear, it should be suspected to be a sign of hole collapse, which can be detected by a sou…
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2021-051. General regulations:1. Operators must learn, understand and master the structure, performance, operation methods, maintenance procedures, various command signals, and basic drilling knowledge of the drilling rig. They can only operate on the machine after pa…
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2021-051. Before each shift (approximately 12 hours), grease the lifter and replace the old and new grease until the new grease overflows to ensure good lubrication and rotation. Rotate the lower joint by hand to check whether the rotation is stuck2. Check the oil qua…
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2021-05The lifter, also known as "rotary union" and "power breaker", is a very important part of the rotary drilling rig, which is used to lift drill pipes and drilling tools. The upper end is connected with the main hoisting wire rope of the drill…
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2021-051. Stakeout positioningBefore the start of the project, a survey control network is established in the site according to the axis and pile position layout, and then the core points of each pile position are measured and placed according to the control network.2…
