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公开(公告)号：US3864569A
公开(公告)日：1975-02-04
申请号：US35106073
申请日：1973-04-13
发明人： TITTMAN JAY
CPC分类号： G01V5/125
摘要： A specific embodiment of the invention identifies the chemical composition of an earth formation and compensates for mudcake during well logging. The formation is irradiated with photons that have energies less than about 1 mev. A low energy gamma radiation detector is positioned close to the gamma radiation source primarily to measure borehole parameters, while a second low energy gamma radiation detector, spaced more distantly from the gamma ray source, measures borehole characteristics and the mineral composition of the formation. The signals from the detectors are normalized and combined to produce an output that identifies formation lithology and effective mudcake thickness.
摘要翻译： 本发明的具体实施例识别地层的化学成分并在测井期间补偿泥饼。 用能量小于约1兆伏的光子照射地层。 低能伽马辐射探测器主要靠近伽马辐射源定位，以测量钻孔参数，而距离伽马射线源更远的间隔的第二个低能伽马辐射探测器测量地层的钻孔特征和矿物组成。 来自检测器的信号被归一化并组合以产生识别地层岩性和有效泥饼厚度的输出。
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2.发明授权Semiconductor detector borehole logging technique 失效SEMICONDUCTOR DETECTOR BOREHOLE LOGGING TECHNIQUE
公开(公告)号：US3633030A
公开(公告)日：1972-01-04
申请号：US3633030D
申请日：1969-05-12
发明人： ANTKIW STEPHEN , TITTMAN JAY
CPC分类号： G01V5/04
摘要： One embodiment of the invention provides an array of semiconductor radiation detectors for coincidence or anticoincidence counting in a borehole logging tool. A further refinement combines, in a logging tool, a semiconductor spectrometer with one or more scintillation detectors. The response of this latter arrangement corresponds to the fine spectral resolution that characterizes semiconductor detectors rather than the less sharply defined spectral resolution of scintillation devices.
摘要翻译： 本发明的一个实施例提供了一种半导体辐射检测器阵列，用于钻孔测井工具中的重合或反重点计数。 进一步的细化在测井工具中结合了半导体光谱仪与一个或多个闪烁检测器。 后一种布置的响应对应于表征半导体检测器的精细光谱分辨率，而不是明确限定的闪烁装置的光谱分辨率。
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公开(公告)号：US3654467A
公开(公告)日：1972-04-04
申请号：US3654467D
申请日：1969-05-12
发明人： TITTMAN JAY , NELLIGAN WILLIAM B , WAHL JOHN S , SHERMAN HAROLD
CPC分类号： G01V5/101
摘要： A typical embodiment of the invention enables neutrons of low average energy that characteristically are emitted from californium 252 (Cf252) to react with, or fail to react with, nuclei within an earth formation, depending on the energy threshold for the reaction in question. The neutron activation induced by means of the Cf252 source is compared with the response induced in the formation through neutrons of higher average energies from other sources, The activation comparison permits the identification of elements and minerals in the formation to be determined accurately.
摘要翻译： 根据本发明的反应的能量阈值，本发明的典型实施例使得能够从ium 252（Cf252）发射的低平均能量的中子与地球内的核反应或不与其反应。 通过Cf252源引起的中子活化与通过来自其他来源的较高平均能量的中子在地层中诱导的响应进行比较。活化比较可以准确地确定地层中的元素和矿物质的鉴定。
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公开(公告)号：US3567936A
公开(公告)日：1971-03-02
申请号：US3567936D
申请日：1968-02-07
发明人： TITTMAN JAY
CPC分类号： G01V5/107
摘要： An earth formation porosity logging tool in accordance with an illustrative embodiment of the invention comprises a neutron source and four neutron detectors spaced at different distances from the source for transport through a borehole. Signals are obtained that correspond to the ratios of the counts registered by the two short-spaced detectors and the two long-spaced detectors. The effect of the borehole characteristics on the formation porosity measurement is compensated by directly contrasting these ratio signals with each other. A second illustrative embodiment of the invention using only three neutron detectors also is shown and described.
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5.发明授权Multiple gamma radiation logging technique for identifying low atomic number materials 失效用于识别低原子数量材料的多种伽马辐射测井技术
公开(公告)号：US3521063A
公开(公告)日：1970-07-21
申请号：US3521063D
申请日：1967-07-19
发明人： TITTMAN JAY
CPC分类号： G01V5/125
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