PROCEDURE FOR OILFIELD PIPELINE OPERATION Russian patent published in 2013 - IPC E21B43/00 

FIELD: oil and gas industry.

SUBSTANCE: in compliance with the procedure qualitative and quantitative composition is defined for water produced at the well mouth or at output from a measuring group unit; concentration is calculated for mixed salts in water coming to the well from different sources considering periodicity of operation for one well or a group of wells in the collecting pipe or a measuring group unit. Calculation of the reaction termination of hard salts formation in a place of measurement, formed at mixture of different waters. A fluid flow velocity on the pipeline and place of depositions of salts is defined. The conclusion about working capacity of the equipment is made. Operation mode is changed for one well or for a group of wells in order to reach concentration of barium sulphate salts mixture at a measuring point less than 0.1 g/l according to calculation results. At that flow rate of the fluid in the pipeline is defined against an analytical expression. Shutdown of wells is considered as a varied mode of their operation. During shutdown period these wells are used for another purpose.

EFFECT: working efficiency of oilfield pipeline at active scale build-up.

1 ex, 4 tbl, 1 dwg