发明名称 |
METHOD AND APPARATUS FOR DOWNHOLE SPECTROSCOPY |
摘要 |
Apparatus and method for estimating a property of a downhole fluid including a carrier that is conveyed in a borehole, and a semiconductor electromagnetic energy source carried by the carrier, the semiconductor electromagnetic energy source having an active region that includes one or more nitride-based barrier layers that are modulation-doped using a nitride-based doped layer. |
申请公布号 |
WO2009140387(A3) |
申请公布日期 |
2010.03.11 |
申请号 |
WO2009US43791 |
申请日期 |
2009.05.13 |
申请人 |
BAKER HUGHES INCORPORATED;CSUTAK, SEBASTIAN |
发明人 |
CSUTAK, SEBASTIAN |
分类号 |
E21B49/08;G01V3/26;G01V8/10 |
主分类号 |
E21B49/08 |
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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