Patent ID: 11885220
Assignee: INSTITUTO MEXICANO DEL PETRóLEO
Field: Measurement (Instruments)
Classification: CPC E  G | IPC E  G

Claim 0:
1. An operational method for a system to determine the remaining saturation of existing fluids in naturally fractured and/or homogeneous reservoirs, comprising:
I) injection of non-partitionable tracer (radioactive);
II) simultaneous injection of chemical tracers (partitionable and non-partitionable) and an injection of a radioactive tracer different from that of the previous phase; and
III) detection and quantification of concentrations of the tracers in a location of the well in real time;
wherein the system comprises:
an active oil well head, under study;
a pressure and temperature sensor with a high background resolution; and
a continuous and real-time measurement of the radioactive tracer concentration in a well discharge line.