发明名称 |
WEIGHTING FUNCTION FOR INCLINATION AND AZIMUTH COMPUTATION |
摘要 |
A method, system, and computer readable medium is disclosed to estimate a survey parameter (e.g., attitude) for a drilling operation in a subterranean formation. The survey parameter is calculated using multiple methods with the results of the different methods weighted to improve the accuracy at a given attitude of the tool and angular velocity of the sensor package. Results from the different methods are combined based on a weighting function to generate the improved values of inclination and azimuth. Specifically, the values of the weighting function depend, linearly or non-linearly, on the attitude of the tool and quality of the survey data. In one scenario, the attitude of the tool is approximated by the most recently obtained static inclination/azimuth. In addition, the quality of the survey data is approximated by a measure of vibration severity that is represented by the number of good data points based on the roll rate. |
申请公布号 |
WO2014092938(A1) |
申请公布日期 |
2014.06.19 |
申请号 |
WO2013US70668 |
申请日期 |
2013.11.19 |
申请人 |
SCHLUMBERGER CANADA LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;SCHLUMBERGER TECHNOLOGY CORPORATION |
发明人 |
BOWLER, ADAM;BOGATH, CHRISTOPHER C.;SUGIURA, JUNICHI;DITLEFSEN, KEN-VIDAR |
分类号 |
E21B47/09;E21B47/024 |
主分类号 |
E21B47/09 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|