Measuring water level in highly deviated or horizontal hydrocarbon well sections

A water level measuring method in a highly deviated or horizontal section of a hydrocarbon well comprising the steps of:

• providing a production logging tool in the hydrocarbon well, the production logging tool comprising an elongated cylindrical body of longitudinal axis, the body carrying an articulated dual arms deploying arrangement comprising two deploying arms coupled together, to the body and to a sliding sleeve, the deploying arms being operable from a retracted configuration into a vertically extended configuration, wherein:
• at least one arm carries a segmented water level capacitance probe comprising multiple water level capacitance sensors sensitive to a water content of a multiphase fluid mixture flowing in the hydrocarbon well;
• the water level capacitance sensors are positioned along the arm such as to be positioned at different height from a bottom to a top of the highly deviated or horizontal section of the hydrocarbon well;
• each water level capacitance sensor comprising a conductive body forming an electrode covered by a protective cap forming an insulator extending substantially vertically along a height segment;
• running the production logging tool along the hydrocarbon well while operating the deploying arms to vertically extend into engagement with a wall of the hydrocarbon well, said articulated dual arms deploying arrangement being configured such that a capacitance sensing part axis of the electrode and the insulator is substantially perpendicular to the well axis for any vertical extension of the deploying arms when running the production logging tool along the hydrocarbon well so that the segmented water level capacitance probe substantially covers an internal diameter of said section of the hydrocarbon well;
• determining the water level in said section of the hydrocarbon well based on signals proportional to the capacitance measured by each water level capacitance sensor and related to a local water level along said height segment all along the arm carrying the segmented water level capacitance probe.