METHOD OF PRODUCTION OF REAGENT FOR INCREASING OIL YIELD OF FORMATION AND METHOD OF OIL DEPOSIT DEVELOPMENT Russian patent published in 2008 - IPC C09K8/58 E21B43/22 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to development of watered oil deposit including those under conditions of high temperatures. The method of producing a reagent for increasing oil yield of the formation consists in activation of bran by milling them in a mill till there is a residual on a sieve 05 for reagent "ЦСМ-К" 30-60 wt % and for reagent "ЦСМ-М" 5-30 wt %. Note that wheat or rye bran is used, and a mill consisting of corrugated metal shafts and pneumatic transport for automatic transportation of crumbled material along aggregates of the mill and vibrating sieve. According to the suggested method of oil deposit development it consists in successive pumping water into a pressure well with the reagent- bran and a forcing-through liquid, and in withdrawing oil via a producing well; when as said water with reagent there is used 0.1-1.5% suspension of reagents "ЦСМ-К" or "ЦСМ-М". Also said pumping is carried out cyclically; forcing-through liquid is pumped in volume 1.5-3 times more at the final cycle, diammonium phosphate at volume of 0.1-0.2 wt % is introduced additionally into the forcing-through liquid.

EFFECT: facilitating re-distribution of filtration flows with involving weakly drainable inter-layers of low permeability into active development.

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