Drilling tools mainly include wellhead tools and downhole drilling tools. Wellhead tools are tools for lifting and unloading drilling tools, such as tongs, elevator and slips. The tongs are used to load and unload threads of various downhole drilling tools. The elevator is used to hang, lift and lower the drill string. The slips are used to catch the drill string and hang on the rotary table.

Drilling workers all hope to have a kind of high quality mud, in order to strengthen the drilling measures, safe and fast drilling. The good performance of the mud chemical treatment is not only expensive, and the performance is difficult to stabilize, it must also rely on effective mechanical treatment equipment to control the solid content of the mud (in actual work, often diluted with water to assist in mechanical treatment, in order to improve the mechanical treatment effect). Therefore, mechanical solid phase control is an important link to maintain and ensure the good performance of drilling mud, and it is also one of the components of conventional drilling technology.

Waste mud is one of the major sources of pollution in the oil and gas industry. It is a kind of clay, weighting materials, a variety of chemical treatment agents, sewage, oil and drilling cuttings of a number of stable colloidal suspension system, the main components of environmental hazards are hydrocarbons, salts, various polymers, lignosulfonates, some metal ions (mercury, copper, arsenic, chromium, zinc and lead) and impurities in barite. In order to prevent environmental pollution caused by drilling waste mud, it must be treated. According to different treatment and discharge conditions, there are many treatment methods for waste slurry at home and abroad, including solid-liquid separation treatment, MTC technology, chemically enhanced solid-liquid separation technology, mechanical dehydration, incineration, spray drying, recovery and recycling, safe land burial method (also known as pit sealing method), land cultivation method, destabilization and drying field treatment method, injection into safe formation or circular space method, microbial method, etc. Among them, solidification treatment is one of the more methods used at present, especially suitable for those waste mud that is not suitable for land cultivation treatment.

Ground inspection before going into the well: lift the drilling tool with the lifting sub, put it into the turntable, make the bypass valve above the turntable, install the safety slip, remove the lifting sub, and check the flexibility of the bypass valve. The method is to press the valve core with a wooden rod, then loosen it, the valve core returns to normal under the action of spring force, repeatedly press it down for 3-5 times, the valve core is free of clamping resistance, and flexible, and then moves, the bypass hole is closed, the motor is started, the drive joint rotates, the valve core is reset after the pump is stopped, the mud is poured out from the bypass hole, and the drilling tool is normal.

Drilling rig is a complex machine, which consists of machines, units and institutions. Drilling rig is in the exploration or mineral resources (including solid ore, liquid ore, gas ore, etc.) development, drive the drilling tool to drill underground, access to physical geological data of mechanical equipment. Also known as drilling machine. The main function is to drive the drilling tool to break the rock at the bottom of the hole and lower or raise the drilling tool in the hole. It can be used to drill cores, ore cores, cuttings, gaseous samples, liquid samples, etc. to explore underground geology and mineral resources.