Patent ID: 8684081
Filing Date: 2014-04-01
Classification: C09K,E21B

Abstract:
1. A method of sealing a face of a fracture of a formation with a silicate gel composition and diverting an acid treatment fluid, the method includes the steps of: forming an acid emulsion fluid that is operable to form the silicate gel composition upon contacting the face of the fracture comprising an aqueous acid solution, a silicate, and a hydrocarbon-based isolation fluid, where the hydrocarbon-based isolation fluid of the emulsion does not permit interaction between the aqueous acid solution and the silicate; introducing the acid emulsion fluid to the face of the fracture of the formation such that the acid emulsion fluid contacts and breaks at the face of the fracture, where the aqueous acid solution and the silicate interact with one another and form the silicate gel composition, where the silicate gel composition acts as a sealing layer upon and adheres to the face of the fracture, and where the silicate gel composition formed is operable to maintain a maximum differential pressure value of at least about 50 pounds-per-square-inch-differential (psid) across the sealing layer while upon the face of the fracture; and introducing an acid treatment fluid into the formation such that the acid treatment contacts and reacts with the formation inside the fracture, where the silicate gel composition diverts the acid treatment fluid away from contacting and reacting with the face of the fracture of the formation.