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:
Nov. 11, 2003
Filed:
Nov. 29, 2000
Davoud Tayebi, Trondheim, NO;
Lars Kilaas, Trondheim, NO;
Are Lund, Trondheim, NO;
Arne Lund Kvernheim, Nesoddtangen, NO;
Odd Ivar Eriksen, Olso, NO;
Jostein Sveen, Trondheim, NO;
Ole Bernt Lile, Trondheim, NO;
Marit Valeur Ramstad, Trondheim, NO;
Ole Widar Saastad, Olso, NO;
Sinvent AS, Trondheim, NO;
Abstract
A method for monitoring hydrocarbon and water production from different production zones/sections in a hydrocarbon reservoir and/or injection wells and detection of different phenomena such as e.g. local variations in pH, salinity, hydrocarbon composition, temperature, pressure, microorganisms, and the difference between production of formation and/or injection water from various zones/sections. The method includes dividing regions around wells in the reservoir into a number of zones/sections, and injecting or placing specific tracers with unique characteristics for each zone/section into the formation in these regions such that tracers are placed as integrated parts of the well completion or placed and immobilized in these regions through injection, squeeze or by other techniques. The tracers can also be immobilized or placed on a filter, a casing or other constructions surrounding the well in each zone/section. The tracers are specific or introduced to give specific information from each zone/section. The method further includes chemically immobilizing or integrating the tracers in the formation or constructions or filters around the wells, the tracers (tracer carriers) being chemically intelligent and released as a function of specific events, and detecting the tracers downstream providing information about the various zones/sections. The method may be used in a local alarm system for water breakthrough or for improved oil and gas recovery (IOR) in horizontal production and injection wells.