The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 20, 2020
Filed:
Oct. 15, 2018
Saudi Arabian Oil Company, Dhahran, SA;
Hooisweng Ow, Woburn, MA (US);
Jason R. Cox, Ashland, MA (US);
Martin E. Poitzsch, Northumberland, NH (US);
Daniel T. Georgi, Houston, TX (US);
Alberto F. Marsala, Dhahran, SA;
Saudi Arabian Oil Company, Dhahran, SA;
Abstract
A method for surface logging a well uses a plurality of polymeric taggants distinguishable from each other. The method includes selecting the polymeric taggants that have ceiling temperatures that do not interfere with pyrograms from source rock decomposition and adding each of the plurality of polymeric taggants to a circulating drilling fluid in a sequence while drilling the well. A sample of drill cuttings carried by the circulating drilling fluid is then taken. The method also includes measuring, using pyrolysis-gas chromatographymass spectrometry, concentrations of individual polymeric taggants attached to the drill cuttings in the sample and analyzing, using pyrolysis-gas chromatographymass spectrometry, properties of the drill cuttings. A depth associated with the sample is identified based, at least in part, on the measured concentrations of individual polymeric taggants and on the sequence.