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:
Aug. 16, 1983
Filed:
Aug. 06, 1981
Applicant:
Inventor:
Kenneth G Nolte, Tulsa, OK (US);
Assignee:
Standard Oil Company (Indiana), Chicago, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
73155 ;
Abstract
The fluid loss during the extension of a fracture into a subterranean formation is determined from pressure decline measurements of a calibration fracture extending from a wellbore into subterranean formation. During the decline of the calibration fracturing treatment pressure, the period of time while the pressure decline is primarily controlled by fluid loss is selected. The fluid loss coefficient for fracturing fluids having similar characteristics is determined from the pressure decline during the selected period of time.