公开(公告)号：US20230392064A1

公开(公告)日：2023-12-07

申请号：US18250045

申请日：2021-10-21

Applicant: ENI S.P.A.

Inventor： Giuseppe MADDINELLI ,  Stefano CARMINATI ,  Davide MOSCATELLI ,  Matteo MARALDI

IPC: C09K8/035 ,  C08F220/38

CPC classification number: C09K8/035 ,  C08F220/387

Abstract: A new class of multifunctional tracers has been synthesised for use in the oil industry, specifically during waterflooding operations. They are used either in a traditional way (i.e., mapping the connections of oilfield selections) or to provide information on important physical-chemical parameters (such as oil content, temperature and rock permeability) useful for optimizing the oilfield management and subsequent improvement/increase in oil extraction. The multifunctional tracers have a polymer chain having a plurality of units different from one another and recurring along the chain and having respective specific functionalities. The units have at least a first rock-repulsive unit, which is configured to provide an effect of electrostatic repulsion towards rock, and at least a second detectable unit, which is configured to allow detectability of the tracer; and optionally at least a third unit, which is configured to detect a parameter or features of an oilfield, in particular oil saturation and temperature.