SUBSURFACE FORMATIONS PROCESSING BY DEGRADABLE SUBSTANCE Russian patent published in 2014 - IPC E21B43/267 C09K8/86 C09K8/92 C09K8/94 

Abstract RU 2536912 C2

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to subsurface formations processing in the production of hydrocarbons. Method of processing a subsurface formation crossed by a hole comprises: preparation of a processing fluid containing a viscoelastic surfactant with at least one degradable link, a hydrolysable material and a pH adjusting material. Note here that the latter has a pH value equal to or larger than 9 and contains a strongly alkaline substance and an oxidiser. The said processing fluid is injected in the subsurface formation. The invention is developed in dependent claims.

EFFECT: higher efficiency of the proppant transportation and decomposition at low temperatures.

21 cl, 1 tbl, 14 dwg

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RU 2 536 912 C2

Authors

Fedorov Andrej

Levanjuk Olesja

Zol'Nikova Tat'Jana

Dates

2014-12-27Published

2010-09-15Filed