Composition of drilling tools

Drill bit

• The drill bit is the most important component of the drilling tool, responsible for breaking rocks and traveling the wellbore.

• The quality and performance of the drill bit directly affect the drilling efficiency, drilling cost and well depth quality.

• The main parameters of the drill bit include the hardness of the matrix, the quality of the forward carbide and diamond, the hydraulic parameters of the drill bit, etc.

• There are many types of drill bits, such as scraper bits, roller bits and diamond bits, etc. Choose the appropriate drill bit according to the formation characteristics and drilling requirements.

Drill pipe

• The drill pipe is a tubular component connecting the drilling rig and the drill bit, which is used to transmit torque and transport drilling fluid.

• The material, size, connection method, etc. of the drill pipe have strict standards and specifications.

• Drill pipe will be tested by multiple complex factors such as vibration, pressure, friction and corrosion during the drilling process, so it needs to have sufficient lightness, rigidity and corrosion resistance.

• The maintenance and care of the drill pipe is of great significance to ensure drilling safety and improve drilling efficiency.

Drill collar

• Drill collars are tools used to increase the rigidity of the drill string and provide a certain weight, usually made of thick-walled steel pipes.

• In deep and ultra-deep well drilling, the use of drill collars is more important, which can improve the overall rigidity and stability of the drill string.

• The weight and size of the drill collar are selected according to actual needs, and its surface is usually treated with anti-corrosion.

• During use, the wear and corrosion of the drill collar should be checked regularly, and the damaged drill collar should be replaced in time.

  
  

Accessories

• The jar can quickly release the pressure in the drill pipe in case of an emergency such as a stuck drill pipe, helping to relieve the danger.

• The corer is used to remove the core samples from the well for geological analysis.

• The stabilizer is used to control the wellbore trajectory and reduce the changes in the well inclination and azimuth.

• The shock absorber can absorb the vibration of the drill pipe and reduce the risk of broken rods and drill bit damage.

• Other accessories include stabilizers, shock absorbers, corers and jars, etc. These accessories play an important role in improving drilling quality and efficiency.