US 12,366,159 B2
Sensor assembly and system, and a method of determining the free water level in a hydrocarbon reservoir
Trond Arne Rolfsvåg, Tananger (NO); Harald Syse, Røyneberg (NO); Øivind Godager, Sandefjord (NO); Solveig Riisøen, Olsvik (NO); and Kjetil Ormark Cleveland, Stavanger (NO)
Assigned to Hydrophilic AS, Tananger (NO)
Appl. No. 18/546,708
Filed by HYDROPHILIC AS, Tananger (NO)
PCT Filed Feb. 22, 2022, PCT No. PCT/NO2022/050047
§ 371(c)(1), (2) Date Aug. 16, 2023,
PCT Pub. No. WO2022/182244, PCT Pub. Date Sep. 1, 2022.
Claims priority of application No. 20210240 (NO), filed on Feb. 23, 2021.
Prior Publication US 2024/0133290 A1, Apr. 25, 2024
Prior Publication US 2024/0229639 A9, Jul. 11, 2024
Int. Cl. E21B 47/047 (2012.01); E21B 47/06 (2012.01)
CPC E21B 47/047 (2020.05) [E21B 47/06 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A sensor assembly configured for installation at a location in a hydrocarbon reservoir in a subterranean formation, said sensor assembly comprising:
a porous material;
at least one sensor arranged in physical contact with the porous material and configured for measuring water content in said porous material by utilizing a difference in dielectric constant between hydrocarbon and water;
wherein said porous material comprises pores having hydrophilic surfaces and has been selected based on desired properties; and
wherein the sensor assembly is forced into the formation or pressed against the formation.