Patent ID: 8950493
Filing Date: 2015-02-10
Classification: C09K,E21B

Abstract:
1. A method for treating a formation comprising: injecting an effective amount of an aggregating, agglomerating or conglomerating composition into a weakly consolidated, semi-consolidated or unconsolidated formation, one zone or a plurality of zones of a weakly consolidated, semi-consolidated or unconsolidated formation, or a long interval or a plurality of long intervals of a weakly consolidated, semi-consolidated or unconsolidated formation, where: the composition comprises a reaction product of an amine and a phosphate ester, the amine is of the general formula R1,R2NH or mixtures or combinations thereof, where R1 and R2 are independently a hydrogen atom or a carbyl group having between about 1 and 40 carbon atoms and the required hydrogen atoms to satisfy the valence and where one or more of the carbon atoms can be replaced by one or more hetero atoms selected from the group consisting of boron, nitrogen, oxygen, phosphorus, sulfur or mixture or combinations thereof and where one or more of the hydrogen atoms can be replaced by one or more single valence atoms selected from the group consisting of fluorine, chlorine, bromine, iodine or mixtures or combinations thereof, and the phosphate esters include phosphate esters of the general formula P(O)(OR3)(OR4)(OR5), polymers thereof, or mixture or combinations thereof, where R3, R4, and OR5 are independently a hydrogen atom or a carbyl group having between about 1 and 40 carbon atoms and the required hydrogen atoms to satisfy the valence and where one or more of the carbon atoms can be replaced by one or more hetero atoms selected from the group consisting of boron, nitrogen, oxygen, phosphorus, sulfur or mixture or combinations thereof and where one or more of the hydrogen atoms can be replaced by one or more single valence atoms selected from the group consisting of fluorine, chlorine, bromine, iodine or mixtures or combinations thereof, and where the amine is selected from the group consisting of aniline and alkyl anilines or mixtures of alkyl anilines, pyridines and alkyl pyridines or mixtures of alkyl pyridines, pyrrole and alkyl pyrroles or mixtures of alkyl pyrroles, piperidine and alkyl piperidines or mixtures of alkyl piperidines, pyrrolidine and alkyl pyrrolidines or mixtures of alkyl pyrrolidines, indole and alkyl indoles or mixture of alkyl indoles, imidazole and alkyl imidazole or mixtures of alkyl imidazole, quinoline and alkyl quinoline or mixture of alkyl quinoline, isoquinoline and alkyl isoquinoline or mixture of alkyl isoquinoline, pyrazine and alkyl pyrazine or mixture of alkyl pyrazine, quinoxaline and alkyl quinoxaline or mixture of alkyl quinoxaline, acridine and alkyl acridine or mixture of alkyl acridine, pyrimidine and alkyl pyrimidine or mixture of alkyl pyrimidine, quinazoline and alkyl quinazoline or mixture of alkyl quinazoline, and mixtures or combinations thereof, and where the composition alters an aggregation or zeta potential of formation surfaces and/or formation particulate so that the particles tend to aggregate with sufficient strength to reduce or eliminate formation collapse or cave in during subsequent above critical draw down pressure production and to increase a maximum sand free flow rate in producible formations or to reduce a flow of formation particulate out of producible formations or into injection formations.