Detailed explanation of core drilling production process

1. Drilling construction process: It is the whole process from the flat foundation to the dismantling of the equipment after drilling the final hole. It includes positioning the hole → leveling and building the foundation → installing drilling equipment and ancillary equipment → installation and acceptance → preparation work before opening → opening and lower orifice pipe → changing diameter → drilling → sorting, cataloging and storage of rock cores →Other work (running casing, correcting hole depth, simple hydrological observation, borehole bending measurement, logging) →pulling casing at the end hole →hole sealing →hole sealing quality inspection.

2. Prepare before drilling. It is all the preparatory work before drilling into the opening, such as leveling the foundation, installing equipment (drilling tower, drilling rig, water pump, power machine, etc.), installing ancillary facilities (yard room, safety facilities, circulation system, water pipes, lighting, etc.), Installation acceptance and test drilling.

3. Drilling process. Refers to the construction process of drilling from the opening to the final hole.

4. End hole. It refers to all the work carried out from the stop of drilling to the disassembly of the equipment, including the measurement of the bending of the borehole, the measurement of the water level, the pumping test, the sealing of the hole, the pulling of the casing, and the disassembly of the equipment.

5. Core drilling process: the power machine drives the drilling rig to rotate, and the drill string is composed of the drill pipe, core pipe and drill bit, and the drilling rig supplies the drill string with a certain axial pressure and torque, so that the drill bit with the cutting tool will produce engraving. The role of rock in order to achieve the purpose of continuous drilling to the depths. The rock powder that should be taken off during drilling, along with the flushing fluid sent to the bottom of the hole by the mud pump through the drill string, rushes to the surface through the annular gap of the hole wall. The core is drilled into the core tube, and the core is snapped off by lifting the drilling tool or other coring methods, and lifted from the bottom of the hole to the surface. From drilling down to core extraction, one drilling pass is counted as one round. The lifting and lowering of the drilling tool is accomplished by the hoist of the drilling tower and the drilling rig.

Fourth, the main content of core drilling

Drilling equipment, drilling method (drilling process), drilling quality and measurement, drilling flushing and wall leakage plugging, accident prevention and treatment, airport production management, safety technology, related knowledge (mechanical basic knowledge, mechanical processing and repair knowledge, electrical knowledge , basic knowledge of geology, knowledge of mineral deposits), etc.

The above is the relevant little knowledge about "Detailed explanation of core drilling production process", if you have any questions, you can contact our customer service staff of Shandong Yikuang Drilling Technology Co.,Ltd., we will be happy to discuss with you.