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11.发明申请公开(公告)号：US20120059587A1
公开(公告)日：2012-03-08
申请号：US13040332
申请日：2011-03-04
申请人： Roger Marsh , David M. Chace , Rafay Z. Ansari , Feyzi Inanc
发明人： Roger Marsh , David M. Chace , Rafay Z. Ansari , Feyzi Inanc
摘要： A method of estimating fluid composition in an earth formation includes: generating at least one pulsed neutron measurement by a pulsed neutron tool; estimating a pulsed neutron fluid saturation by analyzing the at least one pulsed neutron measurement via a pulsed neutron model of the earth formation, the pulsed neutron model including expected pulsed neutron measurements relative to selected fluid composition and properties; comparing the pulsed neutron fluid saturation to a reference fluid saturation estimated via a downhole tool; adjusting the pulsed neutron model to at least substantially eliminate a difference between the pulsed neutron fluid saturation and the reference fluid saturation by adjusting at least one of the selected fluid composition and the selected fluid properties; and estimating at least one of the fluid composition and the fluid properties based on the adjusted model.
摘要翻译： 估计地层中的流体组成的方法包括：通过脉冲中子工具产生至少一个脉冲中子测量; 通过经由地层的脉冲中子模型分析至少一个脉冲中子测量来估计脉冲中子液饱和度，所述脉冲中子模型包括相对于所选择的流体组成和性质的期望的脉冲中子测量; 将脉冲中子液饱和度与通过井下工具估计的参考流体饱和度进行比较; 通过调节所选择的流体组合物和所选择的流体性质中的至少一种，调节脉冲中子模型以至少基本上消除脉冲中子液饱和度与参考流体饱和度之间的差异; 以及基于经调整的模型估计流体组成和流体特性中的至少一个。
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公开(公告)号：US20110172922A1
公开(公告)日：2011-07-14
申请号：US12972213
申请日：2010-12-17
申请人： John G. Evans , Freeman L. Hill , David M. Chace
发明人： John G. Evans , Freeman L. Hill , David M. Chace
CPC分类号： E21B47/124 , E21B23/08 , G01V5/10
摘要： The present disclosure relates to apparatus and methods for evaluating an earth formation through a drillstring during tripping of the drillstring. The apparatus may include a logging instrument including a formation evaluation sensor configured to be dropped or pumped into a drillstring at the end of drilling. The logging instrument may be configured to make measurements through a homogenous portion of the drillstring while the drillstring is being tripped. The apparatus may include a memory and processor for logging data for later retrieval. The method may include making at least one measurement indicative of a property of an earth formation using a sensor operatively associated with a logging instrument, wherein the logging instrument is conveyed to proximate to a homogeneous portion of a drilling tubular using the drilling tubular.
摘要翻译： 本公开涉及用于在钻柱跳闸期间通过钻柱来评估地层的装置和方法。 该装置可以包括测井仪器，其包括地层评估传感器，其构造成在钻孔结束时落下或泵入钻柱。 测井仪器可以被配置成在钻柱被跳闸时通过钻柱的均匀部分进行测量。 该装置可以包括用于记录数据以供稍后检索的存储器和处理器。 该方法可以包括使用与测井仪器可操作地相关联的传感器来进行表示地层的性质的至少一个测量，其中使用钻井管将测井仪器输送到靠近钻井管的均匀部分。
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13.发明授权Method and apparatus for neutron induced gamma ray logging for direct porosity identification 失效用于直接孔隙识别的中子诱导γ射线测井的方法和装置
公开(公告)号：US4430567A
公开(公告)日：1984-02-07
申请号：US227331
申请日：1981-01-22
申请人： Donald W. Oliver , David M. Chace
发明人： Donald W. Oliver , David M. Chace
IPC分类号： G01V5/10
CPC分类号： G01V5/102
摘要： In a gamma ray well logging instrument, a neutron generator is pulsed at a predetermined rate. Each neutron burst produces gamma radiation resulting from inelastic scattering and neutron capture. The detected gamma radiations are detected by a detector system within the logging instrument. The detected pulses are transmitted to the surface electronics where pulses occurring in the inelastic interval are directed to one section of a multi-channel analyzer and pulses from the capture interval are directed to another section of the analyzer. The use of address decoders and ratio circuits enables an electrical signal to be obtained which represents the ratio of the total capture gamma ray counts within an energy range to the total inelastic gamma ray counts within the same energy range. This electrical signal is representative of the porosity of the subsurface formations being irradiated by neutrons.
摘要翻译： 在伽马射线测井仪中，中子发生器以预定的速率脉冲。 每个中子爆发产生由非弹性散射和中子俘获产生的伽马辐射。 检测到的伽马辐射由测井仪器内的检测器系统检测。 检测到的脉冲被传送到表面电子器件，其中在非弹性间隔中出现的脉冲被引导到多通道分析仪的一个部分，并且来自捕获间隔的脉冲被引导到分析仪的另一部分。 地址解码器和比率电路的使用使得能够获得电信号，其表示能量范围内的总捕获伽马射线计数与相同能量范围内的全部非弹性伽马射线计数的比率。 该电信号代表被中子照射的地下地层的孔隙度。
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公开(公告)号：US09885802B2
公开(公告)日：2018-02-06
申请号：US14451584
申请日：2014-08-05
申请人： David M. Chace
发明人： David M. Chace
CPC分类号： G01V5/101 , E21B47/0005
摘要： Estimating cement voids in between a casing and a borehole wall of a borehole penetrating the earth formation includes forming with a computing device an actual ratio of radiation induced by a neutron source and measured by a first detector and a second detector when the tool is at two or more different locations in the borehole. A relationship between the actual ratio and the porosity at each of the two or more different locations is used and compared to two different cases of estimates of the ratio. Based on the comparison, an estimate of the cement voids at the two or more locations.
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公开(公告)号：US20130020075A1
公开(公告)日：2013-01-24
申请号：US13551105
申请日：2012-07-17
CPC分类号： E21B43/26 , E21B47/10 , E21B47/1015
摘要： Hydraulic fracturing, acidizing and polymer injection using coiled tubing are commonly used techniques in wellbore completion. A pulsed neutron tool may be conveyed at the bottom of the coiled tubing to monitor the effectiveness of these operations by measuring the flow velocity of the borehole fluid of the annulus between the pulsed neutron tool and the borehole wall. Gamma rays resulting from Oxygen activation and/or Σ measurements are used for measuring the flow velocity.
摘要翻译： 使用连续油管的水力压裂，酸化和聚合物注射是井筒完井中的常用技术。 脉冲中子工具可以在连续油管的底部输送，以通过测量脉冲中子工具和钻孔壁之间的环形空隙的流速来监测这些操作的有效性。 由氧气活化和/或Sgr产生的γ射线 测量用于测量流速。
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公开(公告)号：US20120075953A1
公开(公告)日：2012-03-29
申请号：US13079303
申请日：2011-04-04
CPC分类号： G01V5/101 , E21B47/0005
摘要： A method of evaluating a cased borehole in an earth formation includes: emitting at least one acoustic signal into the borehole via an acoustic source and detecting a return acoustic signal via an acoustic sensor, the borehole including a casing and a casing support material disposed between the casing and a borehole wall; emitting a neutron flux via a neutron source into the borehole and detecting a radiation signal via a radiation detector, the radiation signal including induced gamma radiation resulting from neutron interactions; and identifying a casing support material characteristic based on the return acoustic signal and the radiation signal.
摘要翻译： 评估地层中的套管井眼的方法包括：经由声源将至少一个声信号发射到钻孔中，并经由声传感器检测返回声信号，所述钻孔包括壳体和壳体支撑材料， 套管和井壁; 通过中子源将中子通量发射到钻孔中，并通过辐射检测器检测辐射信号，辐射信号包括由中子相互作用产生的感应伽马辐射; 以及基于所述返回声信号和所述辐射信号来识别壳体支撑材料特性。
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17.发明申请Elemental Concentration Determination Using Neutron-Induced Activation Gamma Radiation 审中-公开使用中子诱导激光伽马辐射的元素浓度测定公开(公告)号：US20120059588A1
公开(公告)日：2012-03-08
申请号：US13223539
申请日：2011-09-01
CPC分类号： G01V5/101
摘要： The present disclosure relates to borehole logging methods and apparatuses for estimating formation properties using nuclear radiation, particularly an apparatus and method for estimating amounts of silicon and/or oxygen in the formation. The method may include using nuclear radiation information from at least one nuclear radiation detector to estimate at least one parameter of interest. The method may include separating a gross nuclear radiation count into separate nuclear radiation components. The method may also include reducing an error in the estimated formation properties due to speed variations of a nuclear radiation source that activates the silicon and oxygen in the formation. The apparatus may include at least one nuclear radiation detector. The apparatuses may include an information processing device to perform the methods.
摘要翻译： 本公开涉及用于使用核辐射估计地层特性的钻孔测井方法和装置，特别是用于估计地层中硅和/或氧的量的装置和方法。 该方法可以包括使用来自至少一个核辐射检测器的核辐射信息来估计至少一个感兴趣的参数。 该方法可以包括将总核辐射计数分离成单独的核辐射分量。 该方法还可以包括由于激活地层中的硅和氧的核辐射源的速度变化而减少估计的地层性质的误差。 该装置可以包括至少一个核辐射检测器。 这些装置可以包括执行方法的信息处理装置。
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18.发明授权
公开(公告)号：US5606124A
公开(公告)日：1997-02-25
申请号：US655304
申请日：1996-05-20
IPC分类号： E21B47/022 , E21B47/00
CPC分类号： E21B47/022
摘要： A method for determining orientation of an instrument with respect to earth's gravity. The method includes measuring components of earth's gravity along mutually orthogonal axes. One of the axes is substantially parallel to an axis of the instrument. Tilt of the instrument along two orthogonal axes is measured. One of the tilt axes is substantially parallel to the instrument axis. The instrument is rotated about its axis, and biases of the sensors used to measure the components of earth's gravity perpendicular to the instrument axis are calculated by averaging measurements made by these sensors during rotation. The ratio of gains of these sensors is determined from the range of amplitudes of the output of these sensors during rotation. A roll angle is determined from the bias corrected measurements of components of the earth's gravity perpendicular to the axis. The tilt measurement with respect to the two orthogonal axes is then calibrated by using the calculated roll angle. Gain and offset calibration of all the sensors used to measure the components of the earth's gravity is performed using the calibrated tilt measurements and the orientation is calculated from the gravity measurements after correction for gain and offset of the sensors.
摘要翻译： 一种用于确定仪器相对于地球重力的方向的方法。 该方法包括沿相互正交的轴测量地球重力的分量。 其中一个轴基本上平行于仪器的轴线。 测量沿着两个正交轴的仪器倾斜。 倾斜轴之一基本上平行于仪器轴。 仪器围绕其轴线旋转，用于测量垂直于仪器轴的地球重力分量的传感器的偏差通过在旋转期间对这些传感器进行的测量进行平均来计算。 这些传感器的增益比由旋转期间这些传感器的输出振幅的范围确定。 从垂直于轴的地球重力的分量的偏置校正测量确定滚转角度。 然后通过使用计算的滚动角来校准相对于两个正交轴的倾斜测量。 用于测量地球重力组分的所有传感器的增益和偏移校准是使用校准的倾斜测量进行的，并且根据传感器增益和偏移校正后的重力测量计算取向。
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公开(公告)号：US09086500B2
公开(公告)日：2015-07-21
申请号：US12984312
申请日：2011-01-04
摘要： A method of estimating at least one property of an earth formation includes: constructing a matrix model of a formation; constructing a shale model of the formation, the shale model including an estimation of a concentration of at least one trace element; combining the first model and the second model to generate a formation model; and comparing measured pulsed neutron data with the mixed model to estimate the at least one property.
摘要翻译： 估计地层的至少一个属性的方法包括：构造地层的矩阵模型; 构造所述地层的页岩模型，所述页岩模型包括对至少一种微量元素的浓度的估计; 结合第一模型和第二模型来生成地层模型; 并将测量的脉冲中子数据与混合模型进行比较以估计至少一种性质。
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公开(公告)号：US20150090871A1
公开(公告)日：2015-04-02
申请号：US14451584
申请日：2014-08-05
申请人： David M. Chace
发明人： David M. Chace
CPC分类号： G01V5/101 , E21B47/0005
摘要： Estimating cement voids in between a casing and a borehole wall of a borehole penetrating the earth formation includes forming with a computing device an actual ratio of radiation induced by a neutron source and measured by a first detector and a second detector when the tool is at two or more different locations in the borehole. A relationship between the actual ratio and the porosity at each of the two or more different locations is used and compared to two different cases of estimates of the ratio. Based on the comparison, an estimate of the cement voids at the two or more locations.
摘要翻译： 估计穿过地层的井筒的壳体和钻孔壁之间的水泥孔隙包括用计算装置形成由中子源引起的辐射的实际比例，并且当工具处于两点时由第一检测器和第二检测器测量 或更多不同的钻孔位置。 使用两个或多个不同位置中的每一个的实际比率和孔隙度之间的关系，并将其与两个不同比例的估计值比较。 根据比较，估计两个或多个位置处的水泥孔隙。
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