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公开(公告)号：US10802174B2
公开(公告)日：2020-10-13
申请号：US16220266
申请日：2018-12-14
发明人： Darren Chaney
摘要： Apparatus (10) for use in determining values of properties of n layers (16,17) of a borehole (11) formed in the Earth's crust (12) comprises a plurality of at least (2n-1) sensor members (19,21,22) of mutually differing, known or calculable, geometric factors, as defined with reference to a sample under investigation comprising n layers. The sensor members (19,21,22) are capable of detecting reflected or transmitted electromagnetic energy and the apparatus (10) includes one or more supports (24,26′) for supporting the sensor members (19,21,22) in a said borehole (11) adjacent and/or in contact with one or more said layers (16,17), the apparatus (10) being capable of causing transmission of electromagnetic energy along, and/or reflection of electromagnetic energy at, each sensor member (19,21,22) in a manner permitting the calculation of values of properties of such layers (16,17) based on reflected or transmitted energy values detected at the sensor members (19,21,22).
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公开(公告)号：US10295691B2
公开(公告)日：2019-05-21
申请号：US15291693
申请日：2016-10-12
摘要： To process geological log data, a two-dimensional set of log values recorded at a plurality of points is obtained about a borehole periphery, and over a chosen length along the borehole. The set of log values are decomposed by identifying in the set one or more main functions indicative of one or more main geological layer features of the rock penetrated by the borehole and removing log values corresponding to values of the main functions from the set of log values. Further decomposing the set of log values can be performed, as necessary iteratively, based on one or more subsidiary functions. The log values of the set remaining after identification and removal of values are designated as texture. Functions indicative of the main and subsidiary layer features and the texture are used to construct a synthesized volume representing the rock removed during creation of the chosen length of the borehole.
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公开(公告)号：US10255473B2
公开(公告)日：2019-04-09
申请号：US15471656
申请日：2017-03-28
摘要： A method and a resistivity image logging tool connected or connectable to one or more processing devices process geological log data to construct missing information from destroyed or occluded parts using cues from observed data. The geological log data signals can be generated through use of the logging tool having one or more electrodes interacting with a formation intersected by a borehole. The processing involves the steps of: in respect of one or more data dimensions associated with missing values in a log data set, decomposing the signal into a plurality of morphological components; and morphologically reconstructing the signal such that missing values are estimated.
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公开(公告)号：US20170103554A1
公开(公告)日：2017-04-13
申请号：US15386353
申请日：2016-12-21
IPC分类号： G06T11/20
CPC分类号： G06T11/206 , E21B47/01 , E21B47/102 , E21B49/00 , G01V3/24 , G01V3/38 , G03B37/005 , G06T11/00 , G06T11/003 , G06T15/80
摘要： A method of processing borehole log data to create one or more image logs involve modelling the log data as components of an image in the form i(x, y)=l(x, y)×r(x, y) (1), in which i(x, y) is an image representative of the log data, l(x, y) denotes an illumination value of the image at two-dimensional spatial co-ordinates x, y, and r(x, y) denotes a surface reflectance value at the co-ordinates x, y. Equation (1) is transformed to a logarithmic domain, and a Fourier transform is obtained of the resulting logarithmic domain expression to obtain a Fourier domain expression. The Fourier domain expression is high-pass filtered, and an inverse Fourier transform is obtained of the resulting filtered Fourier domain expression. An exponential operation is performed on the result of inverse Fourier transform to obtain a filtered image model expression. Values of the filtered image model expression are mapped to respective color values across the range of the filtered image model expression values. The mapped color values can then be displayed, printed, saved and/or transmitted as one or more image logs.
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公开(公告)号：US20160027186A1
公开(公告)日：2016-01-28
申请号：US14873715
申请日：2015-10-02
CPC分类号： G06T7/13 , G01V1/40 , G01V1/42 , G01V3/20 , G01V3/24 , G01V3/38 , G01V11/00 , G01V2210/6169 , G06T2207/10132 , G06T2207/20056
摘要： A method of detecting an edge of a geological characteristic in a borehole comprises, in respect of an image log of a length of a borehole, carrying out the steps of a gradient-based edge detection method, a phase congruence-based edge detection method or a combination of such methods as preliminary, pre-processing stages. Subsequent steps of the method may include operating a relatively computationally simple process to identify sinusoids among detected edge features; and a relatively computationally complex process for parameterizing the thus-identified sinusoids.
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公开(公告)号：US20150219791A1
公开(公告)日：2015-08-06
申请号：US14174476
申请日：2014-02-06
发明人： David Eccles , Jian Huang , Ovunc Mutlu
CPC分类号： G01V99/00 , E21B49/006
摘要： A method of calculating the unconfined compressive strength (UCS) of subterranean rock having a borehole formed or being formed therein comprises the steps of: (a) establishing or accessing a set of input variables pertaining to characteristics of the rock and the geographical region in which the rock exists; (b) allocating to each of a plurality of mnemonic types each representing a respective UCS calculation expression and contained within a database of UCS calculation curves up to one said input variable in the form of a data element or up to one series of said input variables in the form of a data curve the allocation taking place on the basis of identity of each said input variable or data curve, as applicable, to which a said UCS calculation curve is allocated to a variable of a said UCS calculation curve (herein “curve variables”); (c) dividing the set of allocated UCS calculation curves according to one or more respective zones of the rock to which they pertain and calculating a resultant curve; (d) as necessary filtering the resulting set of UCS calculation curves to reduce the number of allocated UCS calculation curves to a single UCS calculation curve for each zone; (e) repeating step (d) in respect of any further said zones of the rock; (f) when step (d) is repeated one or more times, combining the resulting single curves allocated to the respective zones so as to create a composite UCS calculation curve; and (g) using the composite UCS calculation curve to calculate UCS values at one or more locations in the borehole.
摘要翻译： 计算具有在其中形成或正在形成的钻孔的地下岩石的无侧限抗压强度（UCS）的方法包括以下步骤：（a）建立或访问与岩石和地理区域的特征有关的一组输入变量，其中 岩石存在; （b）分配给多个助记符类型中的每一个，每个记忆类型各自表示相应的UCS计算表达式，并且包含在UCS计算曲线的数据库内，直到一个所述输入变量为数据元素的形式或多达一系列所述输入变量 以数据曲线的形式，基于每个所述输入变量或数据曲线的身份（如适用）进行分配，将所述UCS计算曲线分配给所述UCS计算曲线的变量（此处为“曲线” 变量“）; （c）根据与它们相关的岩石的一个或多个相应区域划分所分配的UCS计算曲线集合并计算合成曲线; （d）根据需要过滤所得到的一组UCS计算曲线，以将分配的UCS计算曲线的数量减少到每个区域的单个UCS计算曲线; （e）对岩石的任何另外的所述区域重复步骤（d）; （f）当步骤（d）重复一次或多次时，组合分配给相应区域的所得到的单个曲线，以便产生复合UCS计算曲线; 和（g）使用复合UCS计算曲线来计算钻孔中一个或多个位置处的UCS值。
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7.发明公开公开(公告)号：US20230213323A1
公开(公告)日：2023-07-06
申请号：US18000554
申请日：2022-07-02
摘要： A method can include energizing a tube with a longitudinally extending magnetic field generated inside the tube, using a magnetic field-detecting logging tool to generate magnetic flux signals generated inside the tube externally of the material of the tube wall resulting from such energizing at circumferential locations on the inner surface of the tube and at distances along the tube, iteratively using a model of the relationship between the generated magnetic flux signals and the thickness of the tube wall to derive a thickness profile of the tube wall by using (i) the magnetic permeability of the tube material deduced from the magnetic flux signals and (ii) a defect-free flux parameter representative of any non-linearity between the magnetic field strength and flux density in the tube, the iteration including using the model to calculate an initial approximate wall thickness profile using an initial estimate of the defect-free flux parameter.
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公开(公告)号：US20200263506A1
公开(公告)日：2020-08-20
申请号：US16787494
申请日：2020-02-11
摘要： A downhole tool connection comprises (i) a tool intended for downhole use and including a connection section protruding therefrom in use in an uphole direction, the connection section supporting two or more first connectors spaced from one another and operatively connected to the tool; and (ii) a cable carrier moveable in an in-use downhole direction towards the connection section. The cable carrier supports (a) one or more cables and (b) two or more second connectors spaced from one another and operatively connected to at least one cable . Pairs of the first and second connectors are mutually connectable, on movement of the cable carrier towards the connection section to increase the proximity of the connectors of the pairs, in a manner effecting electrical transmission between the connectors of each pair. At least one pair of the connectors connects inductively, and at least one pair of the connectors connects conductively.
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公开(公告)号：US10545256B2
公开(公告)日：2020-01-28
申请号：US15291287
申请日：2016-10-12
发明人： Darren Chaney
摘要： Apparatus (57, 58) for determining permittivity in a downhole location comprises a sensor (57) including an elongate conducting line (62) supported on or adjacent a first side of a dielectric substrate (61). The sensor (57) also includes at least one conducting ground element (26, 27) that is spaced from the conducting line (62), the conducting line (62) being capable of juxtaposition to a downhole borehole wall (12). The apparatus further includes connected respectively to spaced locations along the conducting line at least two terminals (31, 32; 63, 64) of a vector network analyser (57b) that is capable of detecting one or more signal reflection characteristics whereby when the sensor (57) is juxtaposed to a borehole wall (12) the vector network analyser (57b) generates one or more signals that are processable to indicate the relative permittivity of rock (39) in which the borehole is formed.
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公开(公告)号：US20170298727A1
公开(公告)日：2017-10-19
申请号：US15628911
申请日：2017-06-21
摘要： A method and a resistivity image logging tool connected or connectable to one or more processing devices process geological log data to construct missing information from destroyed or occluded parts using cues from observed data. The geological log data signals can be generated through use of the logging tool having one or more electrodes interacting with a formation intersected by a borehole. The processing involves the steps of: in respect of one or more data dimensions associated with missing values in a log data set, decomposing the signal into a plurality of morphological components; and morphologically reconstructing the signal such that missing values are estimated.
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