WELLBORE TREATMENT FLUIDS HAVING IMPROVED THERMAL STABILITY,申请号WO2006GB00153-传众专利搜索

WELLBORE TREATMENT FLUIDS HAVING IMPROVED THERMAL STABILITY

申请公布号：WO2006082360(A3)

申请号：WO2006GB00153

申请日期：2006.01.17

申请公布日期：2008.03.27

申请人：

HALLIBRUTON ENERGY SERVICES, INC.;CURTIS, PHILIP, ANTHONY;MARESH, JODY, L.

发明人：MARESH, JODY, L.

分类号：C09K8/12;C09K8/08

主分类号：C09K8/12

摘要：Aqueous wellbore treatment fluids having improved thermal stability are provided. The wellbore treatment fluids comprise at least one polysaccharide and an effective amount of at least one polyacrylamide to maintain its stability at a temperature greater than about 25O0F. A formate compound is not required to achieve high-temperature stability in the fluid. Thus, the fluid is less expensive than conventional polymer-containing aqueous wellbore treatment fluids. The aqueous fluid may serve as, for example, a drilling fluid in the wellbore and thus may be circulated through the wellbore without being concerned that it could become unstable due to exposure to relatively high downhole temperatures.