Tripping Procedure in tight hole

The causes of tight holes include: Insufficient inhibition, Mud weight, Lubricity and Hole cleaning.

All these factors are important and comparisons should be made between wells with and without…

Drilling Unconsolidated Formations

The following techniques should be used while drilling Unconsolidated Formations:

1. Obtain maximum annular velocities by using critical velocity circulating rates.

2. Use a "Clayball Trap" or a small…

Lost Circulation

Lost Circulation is not always a major problem; however, the procedure below should be followed when losses do occur:

1. Check surface equipment for leaks. If this fails to show any signs of leakage,…

Baryte plugs to cure losses

Baryte plugs to cure losses.Drilling 12 1/4" hole through a fault at 13,700 ft. Thereafter, gas levels continued to increase (80%). Despite weighing up the mudf, high gas levels were measured. Two…

How to avoid Hole Related Problems

The following guidelines should be considered to to avoid hole related problems ....

1. In 12 1/4" hole, do not use 9 1/2" drill collars. Reduce the number of drill collars by replacing them with HWDP…