发明公开
EP2611879A1 METHOD FOR DISPERSING AQUEOUS BASED DRILLING FLUID FOR DRILLING SUBTERRANEAN BOREHOLES
有权
基本信息:
- 专利标题： METHOD FOR DISPERSING AQUEOUS BASED DRILLING FLUID FOR DRILLING SUBTERRANEAN BOREHOLES
- 专利标题（中）：FOR色散法的水性钻井液地下的钻孔
- 申请号：EP11755418.8 申请日：2011-08-26
- 公开(公告)号：EP2611879A1 公开(公告)日：2013-07-10
- 发明人： NZEADIBE, Kingsley, Ihueze , PEREZ, Gregory, Paul
- 申请人： Halliburton Energy Services, Inc.
- 申请人地址： P.O. Box 1431 Duncan, OK 73536 US
- 专利权人： Halliburton Energy Services, Inc.
- 当前专利权人： Halliburton Energy Services, Inc.
- 当前专利权人地址： P.O. Box 1431 Duncan, OK 73536 US
- 代理机构： Turner, Craig Robert
- 优先权： US807355 20100902
- 国际公布： WO2012028844 20120308
- 主分类号： C09K8/035
- IPC分类号： C09K8/035 ; C09K8/20 ; C09K8/24
摘要：
An inhibitive water-based polymer mud system and method for using the system in drilling and in stabilizing wellbores is disclosed for use in water sensitive formations as an alternative to oil-based muds or water-based muds comprising ferro-chrome lignosulfonates. The system comprises a fresh water or salt water base thinned or dispersed with a sulfonated acrylic copolymer having a hybrid/graft lignosulfonate multipolymer structure containing carboxylate and sulfonate functional groups with synthetic polymer side chains covalently linked to a base lignosulfonate material, having a molecular weight in the range of about 1,000 to about 15,000, and having a high anionic charge density. This system is effective and has stable rheology over a broad pH range, even at a near neutral pH of 8.0. The drilling fluids do not contain heavy metals and are Theologically tolerant to contaminants such as cement, anhydrite and sodium and temperatures as high as about 400°F.
公开/授权文献:
IPC结构图谱:
| C | 化学；冶金 |
| --C09 | 染料；涂料；抛光剂；天然树脂；黏合剂；其他类目不包含的组合物；其他类目不包含的材料的应用 |
| ----C09K | 不包含在其他类目中的各种应用材料；不包含在其他类目中的材料的各种应用 |
| ------C09K8/00 | 用于钻孔或钻井的组合物；用来处理孔或井的组合物，例如，用于完成或修复操作 |
| --------C09K8/02 | .钻井组合物 |
| ----------C09K8/03 | ..在钻井组合物中一般使用的特殊添加剂 |
| ------------C09K8/035 | ...有机添加剂 |