发明名称 |
BRANCHED VISCOELASTIC SURFACTANT FOR HIGH-TEMPERATURE ACIDIZING |
摘要 |
A treatment fluid for use in a subterranean formation penetrated by the wellbore of a well includes: (i) water; (ii) a strong acid; and (iii) a branched viscoelastic surfactant having a hydrophobic portion with a total of 16 to 20 carbons; wherein the pH of the treatment fluid is less than 0.5; and wherein the viscosity of the treatment fluid is less than 5 cP at 40 sec-1. A method of treating a zone of a subterranean formation penetrated by a wellbore includes the steps of forming the treatment; (B) introducing the treatment fluid through the wellbore into the zone; and (C) allowing time for the strong acid in the treatment fluid to spend in the formation. Such a treatment fluid shows good rheological properties at temperatures above 93° C. (200° F.). |
申请公布号 |
US2014246198(A1) |
申请公布日期 |
2014.09.04 |
申请号 |
US201313784105 |
申请日期 |
2013.03.04 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
Pandya Nisha Kaustubh;Wadekar Sushant Dattaram;Pathre Ganesh Surykant |
分类号 |
C09K8/74;E21B43/25 |
主分类号 |
C09K8/74 |
代理机构 |
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代理人 |
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主权项 |
1. A method of treating a zone of a subterranean formation penetrated by a wellbore, the method comprising the steps of:
(A) forming a treatment fluid comprising:
(i) water;(ii) strong acid; and(iii) a branched viscoelastic surfactant having a hydrophobic portion with a total of 16 to 20 carbons;wherein the pH of the treatment fluid is less than 0.5; andwherein the viscosity of the treatment fluid is less than 5 cP at 40 sec-1; (B) introducing the treatment fluid through the wellbore into the zone; and (C) allowing time for the strong acid in the treatment fluid to spend in the formation. |
地址 |
Houston TX US |