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Before pre-expanding, an optimized reaming plan should be formulated, and the maximum reaming diameter and number of reaming should be determined according to the equipment capacity, stratum condition...

1. Advantages of cone type reamer:1) Short processing cycle.2) Suitable for rock reamer hole opener of various diameters (more suitable for small and medium diameters), and suitable for various format...

1. Drill pressureTheoretically, the drilling pressure depends on factors such as formation rock hardness, diameter, drilling speed, drilling rig, drilling tool capacity and drill bit structural streng...

The control of the pilot hole curve is very important. Choose the best combination of drilling tools according to the type of strata crossing. In the rock construction process, for the high strength o...

Oil drill bit is an important tool for oil drilling. It is used to drill oil when extracting oil. Its performance will directly affect drilling quality, drilling efficiency and drilling cost.Structura...

Bit pressure is a necessary condition for rock breaking at the bottom of the well. The size of the bit pressure determines the method and characteristics of rock breaking, which will directly affect t...

Rotation speed indicates how fast a drill bit with a certain diameter rotates, and is the target used to measure the reversal speed during the drilling process. When drilling, the rock breaking condit...

The influence of stratum lithology on drill bit failure is reflected in drilling skills: It affects the drilling speed and drilling footage. The drilling process presents complicated situations such a...

Chinese drill tools are aggressive, constantly pioneering and innovating, and have realized the role change from manufacturing to creation. China's drill bit tool industry is developed, but more o...

The main parameters of rock reamer operation control are the thrust force exerted by the drill on the reamer (force in reverse reaming and thrust in forward reaming) or the bit pressure, rotating spee...

It is the main way to improve the construction efficiency to select suitable reamer according to the characteristics of stratum.In order to adapt to different strata, the structure forms of reamer are...

The reaming design includes reaming classification, reaming type selection, reaming drilling assembly, cleaning drilling assembly, bit pressure, torque, speed and mud flow rate, etc.The classification...

The roller cone bit break rock by crushing and shearing. The cone is rolling at the bottom of the well, so the require for the torque is small, which can greatly reduce the mechanical load.

The design concept of the core-while-drilling bit is to remove 1-2 teeth in the center of the normal PDC bit.

Horizontal Directional Drilling(HDD for short) is a modern trenchless construction technology that combines the directional drilling technology of the petroleum industry with the traditional highway p...