Downhole Density Measurements
Mud density will decrease with increasing temperature, and increase with increasing pressure. Theoretical models similar to those mentioned in SPE Paper 11118 predict that temperature is the major effect. In an attempt to validate the model, the density of a sample of field mud was measured downhole temperatures and pressures.
While drilling with 977pptf IOEM, a downhole pressure gauge was run in the well. Higher than expected mud weights were found between 2,500 and 5,000ft, and between 15,000 and 16,500ft. The increasing trend of mud weight between 15,000 - 16 . . .