发明名称 |
APPARATUS AND METHOD FOR CONTROLLING THE VISCOSITY OR THE DENSITY OF A DRILLING FLUID |
摘要 |
<p>A method for controlling viscosity (or density) of drilling fluid containing solids, said drilling fluid circulating in a drilling fluid system, which method comprises the steps of: (a) feeding drilling fluid into a container (16); (b) sensing with a viscosity (or density) sensor (19) a viscosity (or density) of drilling fluid in said container (16) and providing a viscosity (or density) signal representative thereof; (c) in response to said viscosity (or density) signal pumping a portion of said drilling fluid to a solids separation apparatus (40); (d) separating with said solids separation apparatus (40) at least some of the solids from said portion of drilling fluid; and (e) returning to said drilling fluid system drilling fluid and/or solids separated in step (d) to adjust the viscosity (or density) of said drilling fluid in said container (16).</p> |
申请公布号 |
CA2624751(A1) |
申请公布日期 |
2007.04.26 |
申请号 |
CA20062624751 |
申请日期 |
2006.10.17 |
申请人 |
NATIONAL OILWELL VARCO, L.P. |
发明人 |
STONE, LYNDON RAY;KOCH, RICHARD JAMES;SCOTT, ERIC |
分类号 |
E21B21/06 |
主分类号 |
E21B21/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|