Inventor · Missouri City, TX, US

Peter S. Hegeman

36Patents
13h-index
51Co-inventors
80Inventor score

Filing activity: Sep 25, 2001 → Dec 20, 2013

Most-cited inventions

PatentTitleAreaCited byStatus
US7277796B2 System and methods of characterizing a hydrocarbon reservoir Fixed Constructions 53 Expired
US8622128B2 In-situ evaluation of reservoir sanding and fines migration and related completion, lift and surface facilities design Fixed Constructions 37 Active
US6581685B2 Method for determining formation characteristics in a perforated wellbore Fixed Constructions 33 Expired
US8024125B2 Methods and apparatus to monitor contamination levels in a formation fluid Physics 33 Active
US7966273B2 Predicting formation fluid property through downhole fluid analysis using artificial neural network Fixed Constructions 30 Active
US7677307B2 Apparatus and methods to remove impurities at a sensor in a downhole tool Fixed Constructions 24 Active
US8434356B2 Fluid density from downhole optical measurements Fixed Constructions 23 Active
US7913556B2 Methods and apparatus to determine the compressibility of a fluid Physics 20 Active
US7703317B2 Method and apparatus for sampling formation fluids Fixed Constructions 18 Active
US7748265B2 Obtaining and evaluating downhole samples with a coring tool Fixed Constructions 18 Active
US7614294B2 Systems and methods for downhole fluid compatibility Fixed Constructions 16 Active
US7886825B2 Formation fluid sampling tools and methods utilizing chemical heating Fixed Constructions 15 Active
US8528396B2 Phase separation detection in downhole fluid sampling Fixed Constructions 14 Active
US8283174B2 Formation fluid sampling tools and methods utilizing chemical heating Fixed Constructions 12 Active
US7878243B2 Method and apparatus for sampling high viscosity formation fluids Fixed Constructions 11 Active
US7158887B2 Fluids chain-of-custody Physics 11 Expired
US8335650B2 Methods and apparatus to determine phase-change pressures Physics 10 Active
US7711488B2 Methods and apparatus to monitor contamination levels in a formation fluid Physics 10 Active
US7845219B2 Method and apparatus for sampling formation fluids Fixed Constructions 10 Active
US7586087B2 Methods and apparatus to characterize stock-tank oil during fluid composition analysis Fixed Constructions 9 Active
US8434357B2 Clean fluid sample for downhole measurements Fixed Constructions 8 Active
US6992768B2 Optical fluid analysis signal refinement Physics 8 Expired
US7717172B2 Methods and apparatus to sample heavy oil from a subteranean formation Fixed Constructions 8 Active
US9422811B2 Packer tool including multiple port configurations Fixed Constructions 7 Active
US9650891B2 Obtaining and evaluating downhole samples with a coring tool Fixed Constructions 7 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.