Gel Strength Measurement Procedures

Stir a sample at 600 RPM for about 15 seconds. 2. Turn the RPM knob to the STOP position. 3. Wait the desired rest time normally 10 seconds or 10 minutes . 4. Switch the RPM knob to the GEL position. 5. Record the maximum deflection of the dial before the Gel breaks, as the Gel strength in lb 100 ft2. lb 100 ft2 x 5.077 Gel strength in dynes cm2 . This is the measure of the electro-chemical or attractive forces in the mud under flow dynamic conditions. These forces depend on 1 surface...

Mud Weight Marsh Funnel Viscosity And pH

Mud Balance

A MUD WEIGHT OR DENSITY TEST Theory The density of the drilling fluid must be controlled to provide adequate hydrostatic head to prevent influx of formation fluids, but not so high as to cause loss of circulation or adversely affect the drilling rate and damaging the formation. Normal pressure gradient by water is equal to 0.433 psi ft and equal to 433 psi 1000 ft. The Baroid Mud Balance as shown below is used to determine density of the drilling fluid. The instrument consists of a constant...