发明名称 |
Permeability-modifying drilling fluids and methods of use |
摘要 |
Methods of reducing the permeability of a subterranean formation to aqueous-based fluids using a water-soluble relative permeability modifier that comprises a hydrophobically modified polymer, wherein the hydrophobically modified polymer is a reaction product of: a hydrophilic polymer that comprises a polymer selected from the group consisting of a polyvinylamine, a poly(vinylamine/vinyl alcohol), and an alkyl acrylate polymer; and, a hydrophobic compound comprising at least one alkyl chain having a carbon chain length between about 4 and about 22 carbons. The water-soluble relative permeability modifier may be placed within a subterranean drilling operation such that the water-soluble relative permeability modifier attaches onto surfaces within the subterranean formation to effect permeability of aqueous fluids. |
申请公布号 |
US8273692(B2) |
申请公布日期 |
2012.09.25 |
申请号 |
US201113206848 |
申请日期 |
2011.08.10 |
申请人 |
EOFF LARRY S.;DALRYMPLE ELDON D.;REDDY B. RAGHAVA;HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
EOFF LARRY S.;DALRYMPLE ELDON D.;REDDY B. RAGHAVA |
分类号 |
C09K8/58;C09K8/035;C09K8/508;C09K8/512;C09K8/514;C09K8/68;C09K8/72;E21B43/00 |
主分类号 |
C09K8/58 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|