abstract

Saddad-1 is an exploration well. It is the first well drilled in Saddad area.

The exploration well provides a new geological information about the lethology of the penetrated formations, the anticipated problems while drilling (mud loss, stick-pipe, formation washout..etc.), as well as drilling muds used while drilling and its impact on the drilled formations, types of drilling bits used to reach the final depth, drilling regime (weight on bit, rotation per minute), the hydraulic system (mud flow, nozzles flow area), drilling bit total using time and total drilled meter & rate of penetration of each bit, and tripping time

The subject of this research is to evaluate the performance of the drilling bits used to reach the final depth of the well in regards to mechanical speed, (alpha) factor, the cost per meter and to recognize the bit that has the highest performance.

Obtaining such important info is vital for the successful planning and running of the potential exploration and appraisal wells in Saddad area. The efficient planning of the drilling operations results in decreasing the total drilling time which reflects in turn on the significant decrease in the total drilling cost.

KeyWords : Bit Drill , Drill Cost , Rate Of Penetration