-
公开(公告)号：EP0666991A4
公开(公告)日：1998-04-29
申请号：EP94926499
申请日：1994-08-11
Applicant: WESTERN ATLAS INT INC
Inventor： BARR FREDERICK J , SITTON GARY A , NYLAND DAVID L
CPC classification number: G01V1/36 , G01V1/3808 , G01V2210/32 , G01V2210/322
Abstract: A method for obtaining seismic data in frigid regions without interference from flexural ice waves. In an exemplary embodiment, seismic data is produced by using an energy source to generate a seismic wave (206) in a floating ice sheet (202). Seismic disturbances caused by the energy source are detected by one or more hydrophones (112) and geophones (110), which produce hydrophone and geophone response signals, respectively. In a first embodiment, the hydrophone response signal is integrated (1210). The integrated signal and/or the geophone response signal are scaled (1214), and the two signals are then added (1216). Alternatively, instead of integrating the hydrophone response signal, the geophone response signal may be differentiated (1310) prior to scaling and summing. A method is also disclosed for overcoming phase errors that might be introduced, for example, by the use of a transformer-coupled hydrophone. In another embodiment of the invention, a linear adaptive filter is applied to the hydrophone and geophone response signals to obtain an output signal having attenuated noise characteristics.
-
42.发明公开
公开(公告)号：EP0665958A4
公开(公告)日：1996-10-30
申请号：EP94922576
申请日：1994-07-19
Applicant: WESTERN ATLAS INT INC
Inventor： STRACK KURT M , TABAROVSKY LEONTY A , PAYTON CHRISTOPHER C
Abstract: A method of determining selected parameters of an earth formation (132) surrounding a borehole (135) by first obtaining at least one induction logging measurements of the selected parameters in a first predetermined volume (138-138') of the formation (132) surrounding the borehole (135) having known first radial and vertical dimensions, then obtaining at least one galvanic logging measurement of the identical selected parameters in a second predetermined volume (136) of the formation (132) surrounding the borehole (135) having known second radial and vertical dimensions that overlap the first radial and vertical dimensions of the first predetermined volume, whereby the overlapping volumes form a representative common volume (140) of the formation (132), and then combining the induction and galvanic logging measurements using an inversion technique to obtain a measurement of the selected parameters of the earth formation (132) surrounding the borehole (135) in the representative common volume (140) of the formation (132).
-
43.发明公开
公开(公告)号：EP0662874A4
公开(公告)日：1995-12-20
申请号：EP94922599
申请日：1994-07-21
Applicant: WESTERN ATLAS INT INC
Inventor： PFLAGER WILLIAM W
CPC classification number: F16H25/24 , B24B19/12 , B24B47/20 , B29C70/682 , B29C70/78 , B29D1/00 , Y10S425/058
Abstract: A method of forming a hydrostatic nut (36) that cooperates with a lead screw (38) for translating a cam grinder wheel head (26). An externally threaded lead screw master (66) is inserted into an internally threaded cylindrical mold (50). Beads of wax or tape (76, 78) are adhered to the external threads on the standard (66) while the rest of the standard (66) is treated with a release coating to define a continuous cavity (86, 88) between the internal threads of the nut (36) and the external threads on the standard (66). An epoxy resin is introduced into the cavity. The standard (66) is then removed and the wax or tape (76, 78) is removed to leave oppositely directed helical channels (86, 88) in the polymer. The helical channels are pressurized with a thin fluid film that prevents metal to metal contact.
Abstract translation: 一种形成静压螺母的方法，该静压螺母与用于将砂轮头或托架平移的研磨机例如凸轮研磨机的导螺杆配合。 带螺纹的导螺杆标准或主轴插入到内螺纹的圆柱形模具中。 该标准通过密封模具的开孔的相对端的压力板保持在其中。 蜡，或胶带或其他一些刚性工具的珠粒粘附在标准螺旋螺纹的外表面上，而标准物的其余部分用脱模涂层处理。 在螺母上的内螺纹和标准件上的外螺纹之间限定连续腔。 将环氧树脂或其它浇注聚合物通过模具中的入口引入空腔。 允许浇注聚合物固化成刚性质量块，其粘附到模具上的内螺纹，除了螺旋珠。 移除标准，将模具加工成其静态螺母的最终结构，并除去蜡或胶带以留下刚性固化的聚合物中的空隙。 空隙限定相反方向的螺旋通道，其被加压以形成薄的流体膜，其防止螺母和丝杠上的互补螺旋螺纹之间的金属与金属接触。 固化的聚合物质量通过限定在金属螺母上的螺纹结构地增强，使得限定在其外表面上的通道保持其尺寸。
-
公开(公告)号：EP0594844A4
公开(公告)日：1994-09-21
申请号：EP93913954
申请日：1993-05-12
Applicant: WESTERN ATLAS INT INC
Inventor： HWANG JACKSON H
CPC classification number: G01N27/82
-
公开(公告)号：NO325106B1
公开(公告)日：2008-02-04
申请号：NO983459
申请日：1998-07-28
Applicant: WESTERN ATLAS INT INC
Inventor： LOPEZ JOSEPHINE , HA STEPHEN T , REUTER FRITZ W
Abstract: A wellbore cable 100 has one or more fiber optic fibers 120,126 with one or more fiber Bragg gratings (127,129, Fig 3D) thereon or therein. Such a cable can be used in a system with an appropriate broadband source, detector system and other items (e.g. isolators, couplers, computers, and acoustic transmitters) to measure: the length of a cable in a wellbore, localized temperature in a wellbore, and strain on a cable or other item in a wellbore. A wellbore logging cable may have a hollow metal tube 118 through which extends strain-free at least one fiber optic. Copper conductors 112,113 are shown.
-
Patent Agency Ranking
公开(公告)号：NO324647B1
公开(公告)日：2007-11-26
申请号：NO974548
申请日：1997-10-02
Applicant: WESTERN ATLAS INT INC
Inventor： TABAROVSKY LEONTY ABRAHAM , MEZZATESTA ALBERTO G , STRACK KURT M , BEARD DAVID R , JERVIS MICHAEL A
Abstract: A method for producing synthetic tool responses for a well logging tool for an earth formation, the method including, in one aspect, generating wellbore logging data for a particular part of an earth formation with a wellbore logging system with a wellbore logging tool, the earth formation having at least one layer, producing an input earth model of the particular part of the earth formation based on the wellbore logging data, inputting the input earth model to a trained artificial neural network, e.g. )resident in a computer, the computer with the trained artificial neural network processing the input earth model and producing synthetic tool responses for the wellbore logging tool for one point or for a plurality of points in the earth formation.
-
公开(公告)号：NO322542B1
公开(公告)日：2006-10-23
申请号：NO993111
申请日：1999-06-23
Applicant: WESTERN ATLAS INT INC
Inventor： MICKAEL MEDHAT W
IPC: G01V5/10
Abstract: A method for determining thermal neutron capture cross-section of an earth formation penetrated by a wellbore from counts of capture gamma rays detected at spaced apart locations from a source irradiating the formations with bursts of high energy neutrons. An apparent capture cross-section is determined from counts detected at one of the spaced apart locations. The apparent capture cross-section is adjusted by a correction factor calculated from counts detected at each of the spaced apart locations. The correction factor is calculated from an empirical relationship of known values of formation capture cross-section, wellbore diameter and wellbore capture cross section, with respect to counts detected at each of the spaced apart locations. Coefficients of the empirical relationship are determined by simulating counts which would be detected in response to the known values of formation capture cross-section, wellbore diameter and capture cross section. The coefficients are adjusted until differences between capture cross-section calculated by the relationship from the simulated counts and the known values of formation capture cross-section are minimized. In the preferred embodiment, coefficients are calculated for each one of at least two time regions into which the counts between successive bursts are segregated.
-
公开(公告)号：CA2196465C
公开(公告)日：2006-07-11
申请号：CA2196465
申请日：1997-01-31
Applicant: WESTERN ATLAS INT INC
Inventor： TAICHER GERSH ZVI , REIDERMAN ARCADY
Abstract: The invention is a nuclear magnetic resonance: apparatus comprising a magn et generating a static magnetic held in a first region containing materials to be analyzed. The magnet generates zero static magnetic field in a second region. The magn et has generally homogeneous magnetization along a longitudinal axis and is magnetized substantially perpendicular to the axis. The apparatus includes means for generating a radio frequency magnetic field in the first region for exciting nuclei of th e materials to be analyzed. The means for generating the radio frequency magnetic field is disposed within the second region. The apparatus includes receiving means for receiving a nuclear magnetic resonance signal from the excited nuclei. The means for receiving also provides an output indication of properties of the materials to be analyzed. In a preferred embodiment, the means for generating and receiving comprise an antenna at least partially disposed within the second region. In a specific embodiment, the antenna includes wire coils wound in planes perpendicular to the longitudinal axis. A high permeability ferrite is included inside the wire coils.
-
公开(公告)号：CA2232654C
公开(公告)日：2005-10-18
申请号：CA2232654
申请日：1998-03-18
Applicant: WESTERN ATLAS INT INC
Inventor： TAICHER GERSH ZVI , REIDERMAN ARCADY
Abstract: A nuclear magnetic resonance well logging apparatus including a magnet f or inducing a static magnetic field in a substantially cylindrically shaped sector located in earth formations penetrated by a wellbore. The sector subtends an angle of about 60 degrees. The sector is located only on one side of the wellbore and has a longitudinal axis substantially parallel to the wellbore. The apparatus also includes a transmitter for generating a radio frequency magnetic field in the sector for exciting nucle i. The radio frequency magnetic field and the static magnetic field substantially satisfy nuclear magnetic resonance excitation conditions substantially exclusively within th e sector. The apparatus includes a receiver for detecting nuclear magnetic resonance signa ls from the excited nuclei. In one embodiment of the invention, the static magnetic fiel d has a longer dimension along the longitudinal axis than the active length of the transmitter, and the active length of the transmitter is greater than the active length of the receiver so that only fully polarized nuclei are excited by the radio frequency magnetic fiel d and NMR signals are detected only from fully radio frequency-excited nuclei.
-
公开(公告)号：IL145491A
公开(公告)日：2005-09-25
申请号：IL14549198
申请日：1998-09-02
Applicant: WESTERN ATLAS INT INC
IPC: G01R33/20
-
-
-
-
-
-
-
-
-
Search Results
1886
records
(took 0.027 seconds)
