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1. 发明公开

EP0071540A3 Method and apparatus for electrically investigating a borehole 失效
标题翻译：用于电气勘探钻孔的方法和装置
公开(公告)号：EP0071540A3
公开(公告)日：1985-08-07
申请号：EP82401422
申请日：1982-07-30
申请人： SCHLUMBERGER LIMITED , SOCIETE DE PROSPECTION ELECTRIQUE SCHLUMBERGER
发明人： Gianzero, Stanley C. , Palaith, David E. , Chan, David So Keung
IPC分类号： G01V03/20
CPC分类号： G01V3/20
摘要： Methods and apparatuses for electrically investigating a borehole are described. Tool mounted pads are provided, each with a plurality of small measure electrodes from which individually measurable survey currents are injected toward the wall of the borehole. The measure electrodes are arranged in an array in which the measure electrodes are so placed at intervals along at least a circumferential direction (about the borehole axis) as to inject survey currents into the borehole wall segments which overlap with each other to a predetermined extent as the tool is moved along the borehole. The measure electrodes are made small to enable a detailed electrical investigation over a circumferentially contiguous segment of the borehole so as to obtain indications of the stratigraphy of the formation near the borehole wall as well as fractures and their orientations. In one technique, a spatially closed loop array of measure electrodes is provided around a central electrode with the array used to detect the spatial pattern of electrical energy injected by the central electrode. In another embodiment, a linear array of measure electrodes is provided to inject a flow of current into the formation over a circumferentially effectively contiguous segment of the borehole. Discrete portions of the flow of current are separably measurable so as to obtain a plurality of survey signals representative of the current density from the array and from which a detailed electrical picture of a circumferentially continuous segment of the borehole wall can be derived as the tool is moved along the borehole. In another form of an array of measure electrodes, they are arranged in a closed loop, such as a circle, to enable direct measurements of orientations of resistivitv of anomalies.

2. 发明公开

EP0131517A3 Arm mechanism supporting a borehole logging shoe 失效
标题翻译： ARM机械支撑井筒登录鞋
公开(公告)号：EP0131517A3
公开(公告)日：1985-08-21
申请号：EP84401436
申请日：1984-07-06
申请人： SOCIETE DE PROSPECTION ELECTRIQUE SCHLUMBERGER , SCHLUMBERGER LIMITED
发明人： Ohmer, Hervé
IPC分类号： G01V03/20 , E21B23/04 , G01V11/00
CPC分类号： G01V3/20 , E21B17/1021 , E21B23/04 , E21B47/026
摘要： L'invention concerne une sonde de diagraphie destinée à être déplacée dans un forage (12), comportant un corps (304) de sonde et au moins un patin (302) de mesure, ainsi qu'un appareil pour appliquer ledit patin de mesure contre la paroi du forage. Le patin (302) est monté sur un dispositif à bras (344, 300) articulé sur le corps de sonde. Selon l'invention, le dispositif à bras comprend un dipositif d'actionnement (322) pourvu d'un élément mobile (324), un contre-bras (344) monté pivotant sur ledit dispositif à bras et relié positivement au dit élément mobile et des moyens élastiques (352) permet tant d'écarter ledit contre-bras vers l'extérieur du corps de sonde afin que ce dernier vienne sa contact de la paroi du forage du côté diamétralement opposé au dit patin; avan tageusement, le bras et le corps de sonde sont reliés élasti quement pour permettre d'excentrer la sonde par rapport à l'axe du forage.
摘要翻译：描述了一种用于将测井探头的测量垫推压到钻孔的壁上的装置。安装垫的相对长的主臂包括致动器，并且通过从其延伸的构件枢转地连接到测井探空仪的主体。支撑臂枢转地安装在延伸构件上并且通过合适的弹性装置从测井探空器向外偏压。支撑臂也可以与与致动器相关联的位移元件正向连接。通过执行器的操作，主臂和后臂通过合作方式被撤回到测井仪的主体内。此外，测井探测器通过连接在延伸构件和探空体之间的合适的弹性装置在钻孔中制成偏心的。

3. 发明公开

EP0287320A3 Method of and apparatus for measuring inhomogeneities on the wall of boreholes in formations pierced by a borehole 失效
标题翻译：用于测量由钻孔引起的模型中的孔的壁上的不均匀性和装置的方法和装置
公开(公告)号：EP0287320A3
公开(公告)日：1988-12-07
申请号：EP88303263
申请日：1988-04-12
申请人： Magyar Allami Eötvös Lorßnd Geofizikai Intezet , KOOLAJKUTATO VALLALAT
发明人： Barlai, Zoltan, Dr. , Dorcsi Geza , Rez, Ferenc , Vamos, Attila, Dr.
IPC分类号： G01V03/20
CPC分类号： G01V3/20
摘要： A method of measuring local rock inhomogeneities on the wall of a borehole in layers pierced by the borehole including drilling mud, comprising the steps of generating electric field in a conductive way on the wall of the borehole shaded from the drilling mud in layers pierced by the borehole, measuring in the rock wall shaded from the drilling mud current transport intensities, coupled parallel with each other for currents generated perpendicularly to the wall of the borehole and comparing them to each other; or measuring and comparing local current transport intensities which are first parallel to and then, connected in series with the former, perpendicular to the wall of the borehole and comparing them to each other, determining the local rock inhomogeneities from the magnitudes of the dimensionless quotients of the comparison and repeating the field generating step and the measuring step at least two depth places, or performing the generating and measuring steps continuously versus depth. The apparatus comprises a surface operational equipment and investigation tool (1) connected by a well logging cable (20), wherein the novelty is in comprising either a first group of a conductive current generating electrodes (5, 6, 8) for generating current transport intensities perpendicularly to the wall (4) of the borehole (11) wherein the parallel current transport intensities are measured by measuring electrodes (7/1 to 7/12), or a second group of conductive current generating electrodes (12, 13) for generating current transport intensities which flow first parallel to the wall (4) of the borehole (11) then connected to the parallel current lines in series, perpendicularly to the wall (4) wherein the parallel current transport intensities are measured by a first group of measuring detectors (14, 15) and the perpendicular current transport intensities by a second group of measuring detectors (10, 17) and insulating pads (2/1 to 2/6) for receiving either the first or the second group of conductive current generating electrodes (5, 6, 8, 12, 13) and the measuring electrodes and the measuring detectors, the insulating pads supported on the wall (4) of the borehole (11) by means of spring-activated arms (3) and for shading the conductive current electrodes (5, 6, 8, 12, 13) from the drilling mud.

4. 发明公开

EP0074317A3 Logging method and apparatus using a probe equipped with measuring pads 失效
标题翻译：使用装有测量垫的探测器的记录方法和装置
公开(公告)号：EP0074317A3
公开(公告)日：1985-09-18
申请号：EP82401624
申请日：1982-09-02
申请人： SOCIETE DE PROSPECTION ELECTRIQUE SCHLUMBERGER , SCHLUMBERGER LIMITED
发明人： Panetta, Pascal , Tromelin, Jacques
IPC分类号： E21B47/026 , E21B47/00 , G01V03/20
CPC分类号： E21B47/026 , E21B17/1021 , G01V11/005 , Y10S367/911

5. 发明公开

EP0281469A3 Method and device particularly suited for the use of a small-diameter borehole probe in large-diameter boreholes 失效
标题翻译：特别适用于在大直径孔中使用小直径钻孔探头的方法和装置
公开(公告)号：EP0281469A3
公开(公告)日：1988-12-21
申请号：EP88400433
申请日：1988-02-25
申请人： INSTITUT FRANCAIS DU PETROLE
发明人： Wittrisch, Christian
IPC分类号： G01V03/20
CPC分类号： G01V3/20

6. 发明公开

EP0247669A3 Method for analyzing thinly bedded sand/shale formations 失效
标题翻译：用于分析薄层砂/沙粒形成的方法
公开(公告)号：EP0247669A3
公开(公告)日：1988-12-14
申请号：EP87200900
申请日：1987-05-14
申请人： SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
发明人： Hagiwara, Teruhiko
IPC分类号： G01V03/20
CPC分类号： G01V3/20 , G01V3/38
摘要： A parallel conductance model of thinly laminated sand/shale sequences utilizes a sand/shale ratio, such as from a borehole televiewer or microelectric scanning tool, to derive sand layer resistivity from otherwise featureless logs of such thinly laminated formations.

7. 发明公开

EP0243258A3 Method and apparatus for investigating a borehole using an array of elements 失效
标题翻译：用于使用元素阵列调查井眼的方法和装置
公开(公告)号：EP0243258A3
公开(公告)日：1988-01-13
申请号：EP87400898
申请日：1987-04-17
申请人： SOCIETE DE PROSPECTION ELECTRIQUE SCHLUMBERGER , SCHLUMBERGER LIMITED
发明人： Marzetta, Thomas L. , Chew, Weng Cho
IPC分类号： G01V03/20
CPC分类号： G01V3/20
摘要： A method and apparatus investigation a circumferential segment of a borehole with an array of elements, which in effect spatially samples the segment, is described whereby, with a single circumferentially oriented array of spaced-apart elements sufficient overlap can be synthesized so as to reduce artifacts attributable to the spatial sampling. Measurements derived from circumferentially successive elements are combined, such as by summing to establish a desired overlap. In the described embodiment a single lateral array of small electrodes is used to inject survey currents into the borehole wall and each current is measured. Measurements derived from pairs of successive survey currents are then summed to provide the desired overlap.

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