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2021-051. The use of lifting deviceLifting device is also called "reverse union" and "breaking device". It is an important part of small rotary drilling rigs, used to lift drill pipes and drilling tools.2. Structure and performance of inducerThe up…
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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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2021-05This type of drilling rig generally adopts hydraulic crawler telescopic chassis, self-lifting foldable drill mast, telescopic drill pipe, automatic verticality detection and adjustment, hole depth digital display, etc. The operation of the whole machine general…
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2021-05Air holes were found around the hot section of the cut bucket tooth workpiece, and air holes were also found on the wall near the core cavity.The pores in kneading castings can be divided into separating pores, intrusive pores and reverberation pores, and the f…
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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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2021-051. Before using the lifter for the first time or after long-term placement, fill the lifter with grease. After filling, rotate the lower joint to ensure that it can rotate freely without jamming abnormal noise.2. Grease filling method: unscrew and remove the fi…
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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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2021-05This method is suitable for drilling into hard rock formations, the drilling is not easy to deviate, and it is more advantageous to use in water-deficient areas. Using it to drill into hard rock and pebble layers, the drilling efficiency can be increased severa…
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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…
