King Fahd University of Petroleum and Minerals

King Abdulaziz City for Science and Technology

Abdulaziz Al-Maged

Moustafa Elshafei

Amar Khoukhi

Mohammad Talib

A directional drilling system consisting of a four-motor drilling head for better steering in directional drilling and vertical/horizontal drilling is developed. The rotational speed of each motor is independently controlled. The use of four motors in coordination with other traditional drilling variables allow precise control of the drilling direction and optimization of the rate of penetration (ROP). The top and right motors rotate in opposite directions to the bottom and left rotors to stabilize the roll rotation of the drilling head. Inclination (pitch) movement is obtained by increasing/decreasing the speed of the top motor while decreasing/increasing the speed of the lower motor. The Azimuth (yaw) movement is obtained similarly using the right and left motors. The drilling power is derived from down hole motors. A drill string transmits the drilling fluid and force on bit.

Growing community of inventors

Dhahran, Saudi Arabia

Abdulaziz Al-Maged