| 发明名称 |
DISCHARGE COEFFICIENT DETERMINATION OF A MANAGED PRESSURE DRILLING CHOKE/VALVE. |
| 摘要 |
A method is provided for determining a discharge coefficient of a managed pressure drilling choke/valve as a function of valve opening position. The method comprises: a flow of air/gas through the choke/valve; measuring a velocity of the air/gas flow at an inlet of the choke/valve; and measuring a pressure drop of the air/gas flow across the choke/valve. |
| 申请公布号 |
MX2015015609(A) |
申请公布日期 |
2016.03.03 |
| 申请号 |
MX20150015609 |
申请日期 |
2014.05.12 |
| 申请人 |
SCHLUMBERGER TECHNOLOGY B.V. |
发明人 |
ASHLEY BERNARD JOHNSON;GARY MARTIN ODDIE |
| 分类号 |
E21B34/02;E21B21/10;E21B43/12 |
主分类号 |
E21B34/02 |
| 代理机构 |
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代理人 |
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