Introduction To The Use Characteristics Of Various Specifications Of Spiral Drill Pipe

Drill Pipe Introduction To The Use Characteristics Of Various Specifications Of Spiral Drill PipeDrill Pipe

Drill PipeDrill Pipe are a very common tool for us, and drill pipe are also a component with transmission power. Their use has greatly helped our work and greatly improved our work efficiency. There are many types of drill pipe, and we can also make more appropriate choices according to the different industries we work in.

Many times we can make reasonable choices for the efficiency of our work, so when we choose the tools we use, we must also master their relevant knowledge more reasonably to help us better. Drill pipe are mainly used to connect the surface equipment of the drilling rig and the drilling and grinding equipment or bottom hole device at the bottom of the well. The drill pipe we commonly use are also commonly used in drilling. Drill Pipe are also divided into many types, such as new coal drill pipe, water exploration drill pipe, pneumatic drill pipe etc. According to different needs, different drill pipe can be provided to meet the needs of the industry.

The mud motor is the main component of the drilling tool. Many practical and theoretical analysis results show that if the motor is to work normally and effectively, the pressure drop that each stage of the motor can withstand should not exceed 0.8Mpa, otherwise the motor will leak. The theoretical output torque of the motor is proportional to the motor pressure drop, and the output speed is proportional to the input mud flow. As the load increases, the drilling tool speed decreases. Therefore, as long as the reading of the pressure gauge on the ground and the flow of the pump are controlled, the torque and speed of the downhole drilling tool can be controlled.

The drilling tool should be connected according to the steel grade and the new and old degree. Each drill pipe is punched with a steel mold at the appropriate position and a card is registered. When the drilling tool goes up and down the drilling platform, the male and female threads must be protected, and the drilling tool must be lifted and lowered smoothly without colliding with the connection at both ends of the drill pipe. Before connecting the drilling tool, the male and female threads and the shoulder surface must be cleaned and carefully checked. If there is no problem, qualified sthread compound grease can be applied. When connecting and unfastening the buckle, the large tongs are never allowed to bite the drill pipe body.

When the suspended weight of the drilling tool exceeds 1100KN, the wellhead is not allowed to clamp the drilling tool with a short body slip to avoid squeezing the drill pipe. At this time, a long body slip or a double hanging slip should be used to pull the drill and connect a single root. When using high-mineralized drilling fluid, preservatives should be added for protection. The pH value of the drilling fluid should be maintained above 9.5 to reduce corrosion. When drilling hydrogen sulfide gas, it should be crushed firmly. If it is necessary to work in a hydrogen sulfide environment, drill pipes below E-grade steel should be used. When conducting downhole testing, the exposure time of the drill pipe in the hydrogen sulfide environment shall not exceed 1h. Inhibition buffer can be injected. After the drill pipe is closed, the drill string can be circulated through the circulation short section. The well uses drilling tools to implement a regular up and down switching system, which can be pulled up and added down, or pulled down and added.

The purpose is to change the stress state of the drilling tool so that the stress of each part of the whole set of drilling tools tends to be balanced. Implement the wrong thread inspection system. If it is a vertical pole composed of three single roots, one single thread is wrong for each drilling trip, and the wrong thread can be completed in three drilling trips.