Surfactant-polymer compositions for enhancing the stability of viscoelastic-surfactant based fluid
申请人:M-I LLC
公开号:US20040063587A1
公开(公告)日:2004-04-01
Compositions for increasing the thermal and pressure stability of well fluids viscosified using viscoelastic surfactants, the compositions including an effective amount of an oligomeric or polymeric compound that has a thermally stable backbone structure and at least one pendent viscoelastic surfactant functional group. Preferred compositions for increasing the stability of well fluids viscosified using monomeric viscoelastic surfactants include an effective amount of an oligomeric or polymeric compound that has a thermally stable backbone structure and a multiplicity of pendent viscoelastic surfactant functional groups attached to said backbone structure through relatively long hydrocarbon chains, 1 to 18 carbons in length.
用于提高使用粘弹性表面活性剂粘化的油井流体的热稳定性和压力稳定性的组合物,该组合物包括有效量的低聚或高分子化合物,该化合物具有热稳定的骨架结构和至少一个下垂的粘弹性表面活性剂官能团。使用单体粘弹性表面活性剂提高油井流体稳定性的优选组合物包括有效量的低聚或高聚化合物,该化合物具有热稳定的骨架结构和多个通过相对较长的烃链连接到所述骨架结构上的下垂粘弹性表面活性剂官能团,烃链长度为 1 至 18 个碳原子。