发明名称 |
Logging while drilling method and apparatus for measuring formation characteristics as a function of angular position within a borehole |
摘要 |
A method and apparatus for measuring formation characteristics as a function of angular distance segments about the borehole is disclosed. The measurement apparatus includes a logging while drilling tool which turns in the borehole while drilling. Such characteristics as bulk density, photoelectric effect (PEF), neutron porosity and ultrasonic standoff are all measured as a function of such angular distance segments where one of such segments is defined to include that portion of a "down" or earth's gravity vector which is in a radial cross sectional plane of the tool. The measurement is accomplished with either a generally cylindrical tool which generally touches a down or bottom portion of the borehole while the tool rotates in an inclined borehole or with a tool centered by stabilizer blades in the borehole.
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申请公布号 |
US5473158(A) |
申请公布日期 |
1995.12.05 |
申请号 |
US19940183089 |
申请日期 |
1994.01.14 |
申请人 |
SCHLUMBERGER TECHNOLOGY CORPORATION |
发明人 |
HOLENKA, JACQUES M.;EVANS, MICHAEL L.;KURKOSKI, PHILIP L.;SLOAN, WILLIAM R.;BEST, DAVID L. |
分类号 |
E21B47/024;E21B47/08;G01V11/00;(IPC1-7):G01V5/10;G01V5/12 |
主分类号 |
E21B47/024 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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