Fluid pressure-viscosity analyzer for downhole fluid sampling pressure drop rate setting

• Main Authors: SUNIL KUMAR, ROCCO DIFOGGIO, SEBASTIAN CSUTAK, PAUL A BERGREN
• Format: Patent
• Language: English
• Published: 19.06.2013
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; PHYSICS; TESTING

Methods and apparatus for estimating a hydrocarbon fluid parameter using a hydrocarbon fluid testing module. The method may include estimating a hydrocarbon fluid parameter value where a precipitate begins to form in a hydrocarbon fluid sample. The method may also include extracting a hydrocarbon fluid sample under pre-precipitate conditions; changing at least one hydrocarbon fluid parameter, generating information indicative of precipitate formation; and communicating the estimated value of the hydrocarbon fluid parameter at the precipitate formation point. The method may also include producing hydrocarbon fluid sample from a formation using the estimated value and a bubble point. The disclosure also includes an apparatus for implementing the method.