Squeeze Cementing with Micro Matrix Cement Eliminates Need to Set a Drilling Liner, Saving Operator $112,000
An east Texas turnkey drilling contractor was drilling a new hole below a 9 5/8-in casing shoe just below 16,000 ft when mud weight had to be increased to handle gas flow. A sand zone about 75 ft below the shoe then began to take the mud. The maximum mud weight for the sand
was measured at 16.5 lbs/gal, which was insufficient to reach the planned
well depth. The initial leakoff measured at the 2 3/8-in casing point
was 17.2 lbs/gal equivalent mud weight. The drilling contractor needed
a way to prevent the need to set a 7 5/8-in drilling liner and a way to
minimize the impact on the drilling curve.
Halliburton Solution follows --