On a typical drilling operation, mud rheology is measured four times per day, and it is generally assumed that the rheology behaves in an almost linear manner in the six-hour period between two measurements. Is this really true?
Experience from the use of Intelligent Mud Solutions’ RheoSense system indicates that there can be a lot of variances in the properties of the mud that is pumped down the hole that is not accounted for when relying on manual spot checks measurements.
The case below is comparing manual measurements and RheoSense data for the full Rheology profile over a period of more than 18hrs showing that the mud properties can be more fluctuating than previously thought.
The case illustrated is comparing manual measurements and RheoSense data (two units) for the full Rheology profile over a period of 60hrs showing that despite the overall mud rheology profile being stable, there are instances towards the end of the section where the mud properties can be more fluctuating manual measurements can provide.
During this period the mud engineer performed 11 mud checks, whilst the RheoSense system measured the full rheology profile nearly 3000 times; generating a more than 62500 data points.
IMS RheoSense provides autonomous and continuous measurements of mud rheology and density that will pick up on these variations to ensure that the mud going into the well has the correct properties.