METHOD FOR DETERMINING TEMPERATURE DISTRIBUTION IN OIL WELL PRODUCING SUPERVISCOUS OIL Russian patent published in 2024 - IPC E21B47/07 

FIELD: mining.

SUBSTANCE: invention relates to development of superviscous and bitumen oil deposit for determination of temperature distribution in oil well. Method for determining temperature distribution in an oil well producing superviscous oil involves placing a fibre-optic cable in a flexible pipe string, running in of the flexible pipe string to the length of the well from the wellhead to the bottomhole, fixing the change in temperature distribution in the well. Lowering of the fibre-optic cable in the flexible pipe string is performed simultaneously with the lowering of the slit-type shank filter, with the possibility of placing the fibre-optic cable on the outer side of the slit-type shank filter and pulling the fibre-optic cable along the entire wellbore with the end located at the well bottom. End of the slit-type shank is located with the inlet to the production string of the production well at distance of 10 to 30 m.

EFFECT: preventing sticking, twisting, cuts of flexible pipe with fibre-optic cable, freeing up space inside slotted liner for safe and unobstructed movement of pump and tubing, exclusion of the effect of fluid movement inside the filter column and obtaining more reliable temperature distribution along the horizontal shaft of the production well.

1 cl, 1 dwg