MULTI-PURPOSE FOAMER ON THE BASIS OF THE SURFACE ACTIVE AGENT FOR FOAMING AND REMOVAL OF WELL FLUID WITH GAS CONDENSATE CONTENT OF UP TO 50% AND HIGH MINERALIZED (UP TO 300 G / M) FORMATION WATER DURING OPERATION AND DEVELOPMENT OF WELLS AFTER REPAIR AND AUTONOMOUS STOP Russian patent published in 2021 - IPC C09K8/584 

FIELD: gas, gas and oil industry.

SUBSTANCE: invention relates to the field of gas, gas condensate and oil production. It particularly relates to chemical reagents for foaming and removal of well fluid from wells of oil and gas condensate field the products of which contain gas condensate (up to 50%) and highly mineralized (up to 300 g/m³) formation water. A reagent for foaming and removal of well fluid from wells of oil and gas condensate fields, the products of which contain gas condensate (up to 50%) and highly mineralized (up to 300 g / m³) formation water, contains a nonionic surfactant - preparation PEG-1500 or OS-20, anionic surfactant - sodium lauryl sulfate, universal detergent "Progress" and sodium carbonate with the following ratio of components, wt. %: PEG-1500 - 0÷85; OS-20 - 0÷85; sodium lauryl sulfate - 10÷15; universal detergent "Progress" - 3÷5; sodium carbonate - 1÷3.

EFFECT: invention ensures effective foaming and removal of well fluid from wells of oil and gas condensate fields the products of which contain gas condensate (up to 50%) and highly mineralized (up to 300 g/m³) formation water by using a surface active agent.

1 cl, 1 tbl