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1. 发明申请

US20110307179A1 METHOD OF EXTRACTING FORMATION DENSITY AND PE USING A PULSED ACCELERATOR BASED LITHO-DENSITY TOOL 有权
标题翻译：使用基于加速器的LITHO-DENSITY工具提取形成密度和PE的方法
公开(公告)号：US20110307179A1
公开(公告)日：2011-12-15
申请号：US11962161
申请日：2007-12-21
申请人： Tong Zhou , Felix Chen , Charles R. Case , Darwin V. Ellis , Bradley Albert Roscoe
发明人： Tong Zhou , Felix Chen , Charles R. Case , Darwin V. Ellis , Bradley Albert Roscoe
IPC分类号： G01V5/12 , G06F19/00
CPC分类号： G01V5/125
摘要： A method for a pulsed gamma-gamma density tool to simultaneously compensate for interactions due to the photoelectric effect and density variations caused by standoff enables a more precise determination of bulk formation density. This method includes the steps of providing a source of energetic particles and directing those energetic particles at a formation having a known photoelectric factor and electron density and capturing one or more photons either emitted or deflected from the formation either a first detector or a second detector. The first detector is spaced a first distance from the source, the second detector is spaced a second distance from the detector and a third distance separates the first detector from the second detector. Measuring a first total energy of the photons striking the first detector during a time interval and measuring a second total energy of the photons striking the second detector as a function of the time interval and disposing a first filter between the first detector and the formation effective to cause Pe response to match standoff influence thereby compensating for both effects simultaneously. In addition to the first filter, the required compensation may include a second filter between the second detector and the formation as well as adjustments to the respective first distance, second distance and third distance.
摘要翻译：用于同时补偿由于光电效应引起的相互作用和由间隔引起的密度变化的脉冲伽马伽马密度工具的方法使得能够更准确地确定体积形成密度。该方法包括以下步骤：提供能量粒子源，并将具有已知光电因子和电子密度的地层中的能量粒子引导并捕获从第一检测器或第二检测器的地层发射或偏转的一个或多个光子。第一检测器与源极隔开第一距离，第二检测器与检测器隔开第二距离，第三距离将第一检测器与第二检测器分开。测量在时间间隔内撞击第一检测器的光子的第一总能量，并测量作为时间间隔的函数的撞击第二检测器的光子的第二总能量，并且在第一检测器和地层之间设置第一过滤器，导致Pe响应匹配对立影响，从而同时补偿两种效应。除了第一滤波器之外，所需的补偿可以包括在第二检测器和地层之间的第二滤波器以及对相应的第一距离，第二距离和第三距离的调整。

2. 发明授权

US08063356B1 Method of extracting formation density and Pe using a pulsed accelerator based litho-density tool 有权
标题翻译：使用基于脉冲加速器的光刻密度工具提取地层密度和Pe的方法
公开(公告)号：US08063356B1
公开(公告)日：2011-11-22
申请号：US11962161
申请日：2007-12-21
申请人： Tong Zhou , Felix Chen , Charles R. Case , Darwin V. Ellis , Bradley Albert Roscoe
发明人： Tong Zhou , Felix Chen , Charles R. Case , Darwin V. Ellis , Bradley Albert Roscoe
IPC分类号： G01V5/06
CPC分类号： G01V5/125
摘要： A more precise determination of bulk formation density is attainable using a pulsed γ-γ density tool and simultaneously compensating for interactions due to photoelectric effect and density variations caused by standoff. A source directs energetic particles at a formation having a known photoelectric factor and electron density. One or more photons either emitted or deflected from the formation are captured at a first or second detector, respectively spaced at first and second distances from the source, and separated from each other by a third distance. First and second total energies of the photons respectively striking the first and second detectors are measured during a time interval. A first filter is disposed between the first detector and formation effective to cause Pe response to match standoff influence, thereby compensating for both effects simultaneously. In some embodiments, a second filter is provided between the second detector and formation.
摘要翻译：使用脉冲γ-γ密度工具可以获得更精确的体积形成密度测定，并同时补偿由于光电效应引起的相互作用和由间隙引起的密度变化。一个源引导具有已知光电因子和电子密度的形成的能量粒子。从地层发射或偏转的一个或多个光子被捕获在第一或第二检测器处，分别以离开源的第一和第二距离间隔开并彼此分开第三距离。在一段时间间隔内测量分别撞击第一和第二检测器的光子的第一和第二总能量。第一滤波器设置在第一检测器和地层之间，有效地使得Pe响应匹配间隔影响，从而同时补偿两种效应。在一些实施例中，在第二检测器和地层之间提供第二过滤器。

3. 发明授权

US5390115A Compensated gamma-gamma density sonde using three detectors 失效
标题翻译：使用三个检测器补偿伽玛伽玛密度探测器
公开(公告)号：US5390115A
公开(公告)日：1995-02-14
申请号：US59689
申请日：1993-05-10
申请人： Charles R. Case , Darwin V. Ellis
发明人： Charles R. Case , Darwin V. Ellis
IPC分类号： G01V5/12 , G06F15/20
CPC分类号： G01V5/125
摘要： A gamma-gamma sonde for use in determining the bulk density of an earth formation adjacent a borehole comprises a source of gamma radiation and three attenuation-type gamma ray detectors DN, DI and DF spaced apart from the source, respectively, at successively greater distances. The count rate of each detector is converted into an apparent formation density .rho. based on data derived from calibration of the sonde in calibration media having known uniform density, thereby to obtain apparent formation densities .rho..sub.F, .rho..sub.I and .rho..sub.N. The ratio(.rho..sub.F -.rho..sub.I) to (.rho..sub.F -.rho..sub.N)is substantially independent of mudcake density and provides an estimate of the mudcake thickness. The calibration data involving mudcakes of known density and thickness enable the use of the mudcake thickness estimate to determine the value of k in the algorithm.rho..sub.apparent =.rho..sub.F +k(.rho..sub.F -.rho..sub.N),from which formation density is determined.
摘要翻译：用于确定邻近钻孔的地层的体积密度的伽马伽马探测器包括伽马射线源和分别与源极间隔开的三个衰减型伽马射线探测器DN，DI和DF，分别连续更大的距离。基于在具有已知均匀密度的校准介质中的探头的校准得到的数据，将每个检测器的计数率转换为表观形成密度rho，从而获得表观形成密度rho F，rho I和rho N.比率（rho （Rho F-rho N）基本上与泥饼密度无关，并提供泥饼厚度的估计。具有已知密度和厚度的泥浆的校准数据使得能够使用泥饼厚度估计来确定在确定地层密度的算法rho表观= rho F + k（rho F-rho N）中的k值。

4. 发明申请

US20140088877A1 Formation Characterization For Fast Forward Neutron Models 有权
标题翻译：快速中子模型的形成特征
公开(公告)号：US20140088877A1
公开(公告)日：2014-03-27
申请号：US14119181
申请日：2012-05-23
申请人： Darwin V. Ellis , Charles Case , Joseph M. Chiaramonte
发明人： Darwin V. Ellis , Charles Case , Joseph M. Chiaramonte
IPC分类号： G01V5/10 , G06F17/50
摘要： A method for simulating a response of a neutron well logging instrument includes in a computer, defining a function of neutron migration length with respect to expected radiation detector counting rate. The function is defined for selected values of formation porosity. The function is related to neutron slowing down length and neutron diffusion length. The function is weighted for formation density. An expected radiation detector counting rate is calculated in the computer using the defined function based on an initial estimation of formation porosity and density.
摘要翻译：用于模拟中子测井仪器的响应的方法包括在计算机中，相对于预期的辐射检测器计数速率来定义中子迁移长度的函数。该功能是针对选定的地层孔隙度值定义的。该功能与中子减速长度和中子扩散长度有关。该函数对地层密度进行加权。在计算机中使用基于地层孔隙度和密度的初始估计的定义函数来计算期望的辐射检测器计数率。

5. 发明授权

US07292942B2 Measuring formation density through casing 有权
标题翻译：通过套管测量地层密度
公开(公告)号：US07292942B2
公开(公告)日：2007-11-06
申请号：US10762690
申请日：2004-01-22
申请人： Darwin V. Ellis , Marvin E. Markley
发明人： Darwin V. Ellis , Marvin E. Markley
IPC分类号： G06F15/52 , G01V5/10
CPC分类号： G01V5/125
摘要： A method of determining formation density in a cased hole environment using a logging tool having a gamma ray source, a long spacing detector, and a short spacing detector that includes developing one or more cased hole calibration relationships that utilize differences between scattered gamma rays observed by short spacing detectors and scattered gamma rays observed by long spacing detectors to determine corrected formation density values, and using the cased hole calibration relationships and scattered gamma ray measurements obtained by the long spacing detector and the short spacing detector to determine the formation density. An associated article of manufacture and computerized well logging system are also described.
摘要翻译：一种使用具有伽马射线源，长距离检测器和短距离检测器的测井工具确定套管井环境中的地层密度的方法，其包括开发一个或多个套管孔校准关系，所述套管孔校准关系利用由短距离检测器和由长间隔检测器观察到的散射伽马射线，以确定校正的地层密度值，并且使用由长间隔检测器和短间隔检测器获得的套管孔校准关系和散射伽马射线测量来确定地层密度。还描述了相关的制造和计算机测井系统。

6. 发明授权

US06552334B2 Wellbore caliper measurement method using measurements from a gamma-gamma density 有权
公开(公告)号：US06552334B2
公开(公告)日：2003-04-22
申请号：US09847501
申请日：2001-05-02
申请人： Darwin V. Ellis , Mohammed Doghmi
发明人： Darwin V. Ellis , Mohammed Doghmi
IPC分类号： G01V512
CPC分类号： G01V5/12
摘要： Methods are disclosed for determining the standoff of a well logging instrument from the wall of a wellbore and the shape of the wellbore itself. The methods include measuring a compensated gamma-gamma formation density at a rotary orientation proximate a bottom of the wellbore, and measuring an apparent density at at least one other rotary orientation. The apparent density is related to the compensated density, a density of a fluid disposed between the logging instrument and a wall of the wellbore, and the standoff. Repeated measurements at a plurality of axial positions along the wellbore provide a log of the wellbore.

7. 发明授权

US4542292A Correction of natural gamma radiation logs for the effects of gamma ray emission from and attenuation by the borehole fluid 失效
标题翻译：校正天然伽马辐射测井，以获得射线辐射的影响并由井眼液体衰减
公开(公告)号：US4542292A
公开(公告)日：1985-09-17
申请号：US364202
申请日：1982-04-01
申请人： Darwin V. Ellis
发明人： Darwin V. Ellis
IPC分类号： G01V5/06 , G01V5/00
CPC分类号： G01V5/06
摘要： Disclosed are a method and a system for natural gamma radiation well logging in which the radiation detected in five energy windows is converted into a log of thorium, uranium and potassium (Th,U,K) which is corrected for the presence of gamma radiation emitting materials (e.g., potassium) and strong gamma radiation attenuators (e.g., barite and/or hematite) in the borehole fluid.
摘要翻译：公开了一种用于自然伽马辐射测井的方法和系统，其中在五个能量窗口中检测到的辐射被转换成钍，铀和钾（Th，U，K）的对数，其被校正为存在γ辐射发射钻井液中的材料（例如钾）和强γ辐射衰减器（例如重晶石和/或赤铁矿）。

8. 发明授权

US10422920B2 Formation characterization for fast forward neutron models 有权
公开(公告)号：US10422920B2
公开(公告)日：2019-09-24
申请号：US14119181
申请日：2012-05-23
申请人： Darwin V. Ellis , Charles Case , Joseph M. Chiaramonte
发明人： Darwin V. Ellis , Charles Case , Joseph M. Chiaramonte
IPC分类号： G01V5/10 , G06F17/50
摘要： A method for simulating a response of a neutron well logging instrument includes in a computer, defining a function of neutron migration length with respect to expected radiation detector counting rate. The function is defined for selected values of formation porosity. The function is related to neutron slowing down length and neutron diffusion length. The function is weighted for formation density. An expected radiation detector counting rate is calculated in the computer using the defined function based on an initial estimation of formation porosity and density.

9. 发明授权

US4645927A Clay type and volume evaluation 失效
标题翻译：粘土类型和体积评估
公开(公告)号：US4645927A
公开(公告)日：1987-02-24
申请号：US797139
申请日：1985-11-12
申请人： Darwin V. Ellis
发明人： Darwin V. Ellis
IPC分类号： G01V5/10 , G01V5/14
CPC分类号： G01V5/14 , G01V5/101 , G01V5/104 , G01V5/107
摘要： Methods for the determination of clay types and/or clay volumes of an earth formation are disclosed. Information as to the hydroxyl type of the clay minerals is obtained from the difference between an epithermal (or thermal) neutron porosity measurement and a density porosity measurement, and information as to the relative volume fractions of the clays is obtained by cross plotting this porosity difference against the thermal neutron macroscopic capture cross section of the formation. Additional indicators of clay type, e.g., the potassium, iron and boron content of the minerals, may be used to further distinguish between clays, particularly where the intrinsic capture cross sections of different clays are similar.
摘要翻译：公开了测定地层粘土类型和/或粘土体积的方法。关于粘土矿物的羟基类型的信息是从超热（或热）中子孔隙度测量和密度孔隙率测量之间的差异获得的，并且通过交叉绘制该孔隙度差异获得关于粘土的相对体积分数的信息反对热中子宏观捕获横截面的形成。粘土类型的附加指标，例如矿物的钾，铁和硼含量可用于进一步区分粘土，特别是在不同粘土的固有捕获截面相似的情况下。

10. 发明授权

US4423323A Neutron logging method and apparatus for determining a formation characteristic free of environmental effects 失效
标题翻译：用于确定没有环境影响的地层特性的中子测井方法和装置
公开(公告)号：US4423323A
公开(公告)日：1983-12-27
申请号：US300418
申请日：1981-09-09
申请人： Darwin V. Ellis , Charles Flaum
发明人： Darwin V. Ellis , Charles Flaum
IPC分类号： G01V5/10 , G01V5/00
CPC分类号： G01V5/107
摘要： A method for determining porosity or other formation characteristic of a sub-surface geological formation traversed by a borehole is claimed. A neutron logging tool is passed through the borehole while irradiating the formation with neutrons. The neutron logging tool includes a neutron source and first and second detectors spaced from the source by different distances. Neutrons exiting the formation are detected with the neutron detectors and count rate signals are generated. In response to these signals, an indication of porosity, substantially independent of error due to tool standoff from said borehole wall, is produced. In addition, values of tool standoff are also generated. These standoff values are then filtered by a filter to reduce statistical variations and are used to generate improved indications of porosity.
摘要翻译：要求一种用于确定由钻孔穿过的地下地质地层的孔隙度或其它地层特征的方法。中子测井工具通过井眼同时用中子辐射地层。中子测井工具包括一个中子源和第一个和第二个检测器，与源极间隔不同的距离。用中子检测器检测离开地层的中子，产生计数率信号。响应于这些信号，产生基本上与由于所述钻孔壁的工具间隔导致的误差的孔隙度的指示。此外，还产生了工具间隔的值。然后通过过滤器过滤这些间隔值以减少统计学变化，并用于产生改善的孔隙度指示。

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