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Title:
METHOD FOR CONSTRUCTING A CONTINUOUS PVT PHASE ENVELOPE LOG
Document Type and Number:
WIPO Patent Application WO/2018/035222
Kind Code:
A8
Abstract:
A method for generating a phase envelope log to characterize a subsurface formation includes drilling the borehole with a drill string, circulating a drilling fluid in the borehole, drawing a fluid sample representing a fluid contained in the subsurface formation, estimating a PVT parameter indicative of an in-situ condition of the subsurface formation from the drawn fluid sample, determining at least two phase envelopes at different depths using the estimated PVT parameter, and creating a phase envelope log formed of a continuous series of phase envelopes using the phase envelopes. A related system includes a drill string, a fluid sampling system, and a processor that estimates a PVT parameter indicative of an in-situ condition of the subsurface formation, determines at least two phase envelopes at different depths using the PVT parameter, and creates the phase envelope log.

Inventors:
ERDMANN, Svenja (Daumlingweg 9, Hannover, Hannover, DE)
WESSLING, Stefan (An der Quelle 2, Hannover, Hannover, DE)
RITZMANN, Nicklas, J. (Nordwall 54, Celle, Celle, DE)
MOHNKE, Oliver (Burger Landstrasse 19, Celle, Celle, DE)
THERN, Holger, F. (Oisseier Str.11, Hannover, Hannover, DE)
Application Number:
US2017/047142
Publication Date:
March 07, 2019
Filing Date:
August 16, 2017
Export Citation:
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Assignee:
BAKER HUGHES, A GE COMPANY, LLC (17021 Aldine Westfield, Houston, TX, 77073, US)
International Classes:
E21B49/08; E21B47/00
Attorney, Agent or Firm:
CARSON, Matt, W. (Intellectual Property Counsel, Baker Hughes a GE Compnay, LLC,17021 Aldine Westfiel, Houston TX, 77073, US)
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