The composition of drilling fluid on the basis of latex, hole drilling method, and method for formation of polymeric grout in the face of a shaft of a bearing oil area

摘要

"The composition of latex based drilling fluid, drilling method and training method of rendering polymeric in the face of a shaft of an area with oil.It is described a composition of drilling fluid to the latex based aqueous polymer, a compound viscosificante, a controller of the filtrate, a adensante,A compound of alkali metal salt and aqueous base to a pH of at least 8.5, in which, by contact with an area of oil, the surfactant present in the latex polymer migrates the latex into the oil.What breaks the emulsion stability of latex, and precipitate the polymeric latex, which generates a polymeric grout in the face of the shaft.The plaster formed prevents the damage to the formation since it prevents the invasion of filtrate with saline for the zone of oil.