LEOPOLDO SIERRA,GHAITHAN A. AL-MUNTASHERI,ALBERT BAKHTIRAYOV
申请号：
MX2012010146
公开号：
MX2012010146A
申请日:
2011.03.03
申请国别(地区):
MX
年份:
2013
代理人:
摘要：
According to one embodiment, a treatment fluid for a well includes: (a) a water- soluble polymer, wherein the water-soluble polymer comprises a polymer of at least one non- acidic ethylenically unsaturated polar monomer (b) an organic crosslinker capable of crosslinking the water-soluble polymer (c) an ammonium halide and (d) water. According to another embodiment, a method for blocking the permeability of a portion of a subterranean formation penetrated by a wellbore is provided, the method including the steps of: (a) selecting the portion of the subterranean formation to be treated, wherein the bottomhole temperature of the portion of the subterranean formation is equal to or greater than 250 °F (121 °C) (b) selecting estimated treatment conditions, wherein the estimated treatment conditions comprise temperature over a treatment time (c) forming a treatment fluid that is a crosslinkable polymer composition comprising: (i) a water-soluble polymer, wherein the water-soluble polymer comprises a polymer of at least one non-acidic ethylenically unsaturated polar monomer (ii) an organic crosslinker capable of crosslinking the water- soluble polymer (iii) an ammonium halide and (iv) water (d) selecting the water-soluble polymer, the crosslinker, the ammonium halide, and the water, and the proportions thereof, such that the gelation time of the treatment fluid is at least 2 hours when tested under the estimated treatment conditions and (e) injecting the treatment fluid through the wellbore into the portion of the subterranean formation.De acuerdo con una modalidad, un fluido de tratamiento para un pozo incluye: (a) un polímero soluble en agua, en donde el polímero soluble en agua comprende un polímero de al menos un monómero polar no ácido etilénicamente insaturado (b) un reticulador orgánico capaz de reticular el polímero soluble en agua (c) un halogenuro de amonio y (d) agua. De acuerdo con otra modalidad, se proporciona un método para bloquear la permeabilidad de una
