发明名称 |
High voltage X-ray generator and related oil well formation analysis |
摘要 |
An apparatus and method for determining the density and other properties of a formation surrounding a borehole using a high voltage x-ray generator. One embodiment comprises a stable compact x-ray generator capable of providing radiation with energy of 250 keV and higher while operating at temperatures equal to or greater than 125° C. In another embodiment, radiation is passed from an x-ray generator into the formation; reflected radiation is detected by a short spaced radiation detector and a long spaced radiation detector. The output of these detectors is then used to determine the density of the formation. In one embodiment, a reference radiation detector monitors a filtered radiation signal. The output of this detector is used to control at least one of the acceleration voltage and beam current of the x-ray generator.
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申请公布号 |
US7817781(B2) |
申请公布日期 |
2010.10.19 |
申请号 |
US20090503517 |
申请日期 |
2009.07.15 |
申请人 |
SCHLUMBERGER TECHNOLOGY CORPORATION |
发明人 |
WRAIGHT PETER;BECKER ARTHUR J.;GROVES JOEL L.;STOLLER CHRISTIAN |
分类号 |
G21G4/00;G01B15/02 |
主分类号 |
G21G4/00 |
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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