FIELD: oil and gas production.
SUBSTANCE: procedure (versions) for breaking filtration crust in underground reservoir consists in: introduction of solid polymer into fluid used for treatment. As result of hydrolysis solid polymer changes into one or several organic acids. Further, the procedure consists in introduction of fluid used for treatment into the underground reservoir with the said filtration crust formed out of drilling agent, in hydrolysation of solid polymer at presence of water and in liberation of organic acid dissolving substance soluble in it inside filtration crust formed out of drilling agent or in an adjacent reservoir.
EFFECT: raised efficiency of breaking, decomposition or complete removal of filtration crusts formed during drilling.
39 cl, 3 ex, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR BREAKAGE OF FILTRATION CRUSTS | 2005 |
|
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| METHOD FOR PROCESSING UNDERGROUND PRODUCTIVE BEDS | 2000 |
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| METHODS FOR USING ADDITIVES CONTAINING MICROGELS FOR CONTROLLING FLUID LOSS | 2010 |
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| PLURALITY OF PROPPANT PARTICLES COATED WITH DELAYED ACTION TACKIFYING COMPOSITION, AND TREATMENT COMPOSITION BASED ON SAID PARTICLES | 2006 |
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