公开(公告)号：GB2313196B

公开(公告)日：2000-11-22

申请号：GB9708050

申请日：1997-04-21

Applicant: WESTERN ATLAS INT INC

Inventor： EVANS JOHN T ,  FORGANG STANISLAV W ,  ITSKOVICH GREGORY B

IPC: E21B47/10 ,  G01F1/64 ,  G01F1/74 ,  G01N27/06 ,  G01N27/22 ,  G01N27/02 ,  G01F1/704

Abstract: A system for evaluating multiphase flow of a fluid downhole in a borehole. Dielectric permittivity electrodes generate a capacitance output signal through the fluid, and conductivity electrodes generate a conductivity output signal through the fluid. The electrodes are powered with an AC generator operating at the same or different frequencies. The capacitance and conductivity output signals can be alternately generated by operating a controller, and such signals can be combined with a multiplexer engaged with the controller. The signal can be processed downhole or can be transmitted to a receiver positioned at the well surface for processing and interpretation of the multiphase data.

公开(公告)号：AR012860A1

公开(公告)日：2000-11-22

申请号：ARP980102438

申请日：1998-05-26

Applicant: WESTERN ATLAS INT INC

IPC: F42B1/028 ,  F42B1/032 ,  F42C1/032 ,  F42C1/028

Abstract: Una carga perfilada para transferir energía eficientemente de un material explosivo para generar un chorro de alta penetracion. Elrevestimiento de carga perfilada está formado con una primera seccion hemisférica combinada conuna segunda seccion alargada. La segundaseccion de revestimiento puede estar formada como un cono, una trompeta, u otra forma truncada. La primera seccion hemisférica se aplasta para generar unaporcion de chorro de alta velocidad, y la segundaseccion s e aplasta para generar una porcion de chorro alargada de alta penetracion la cual sigue a laporcion de chorro de alta velocidad.

公开(公告)号：AU725796B2

公开(公告)日：2000-10-19

申请号：AU6078498

申请日：1998-04-14

Applicant: WESTERN ATLAS INT INC

Inventor： GAISER JAMES E

IPC: G01V1/047 ,  G01V1/16 ,  G01V1/28 ,  G01V1/38 ,  G01V1/36

公开(公告)号：GB2317016B

公开(公告)日：2000-10-04

申请号：GB9704407

申请日：1997-03-04

Applicant: WESTERN ATLAS INT INC

Inventor： BEARD DAVID R ,  YANZIG CARLOS A ,  TABAROVSKY LEONTY A

IPC: G01V3/28 ,  G01V3/38

Abstract: A method of determining the conductivity of earth formations penetrated by a wellbore. The method includes inserting an induction well logging instrument into the wellbore. The instrument includes a transmitter, a source of alternating current connected to the transmitter, and a receiver. The transmitter is energized with the alternating current, voltages induced in the receiver are recorded, and area enclosed with respect to a baseline, by voltage peaks present in the recorded voltages is determined. The enclosed area corresponds to the conductivity.

公开(公告)号：GB2318415B

公开(公告)日：2000-09-27

申请号：GB9721161

申请日：1997-10-06

Applicant: WESTERN ATLAS INT INC

Inventor： STANKOVIC GORAN MILAN ,  ALBERTIN UWE KARSTEN

IPC: G01V1/30

公开(公告)号：NO20003295L

公开(公告)日：2000-08-30

申请号：NO20003295

申请日：2000-06-23

Applicant: WESTERN ATLAS INT INC

Inventor： AMBS LORAN D

IPC: G01V1/38 ,  G01V1/20

Abstract: The present invention discloses a marine seismic system with a control system and at least one powered (manned or unmanned) tow vehicle with at least one seismic apparatus or system attached thereto, the at least one powered tow vehicle for selectively towing under its own power the at least one seismic apparatus or system. In one aspect such towing is done in controlled conjunction with movement of one or more host vessels. In another aspect such a marine seismic system includes at least one service boat for servicing the at least one powered tow vehicle.

公开(公告)号：AU723273B2

公开(公告)日：2000-08-24

申请号：AU4930697

申请日：1997-12-30

Applicant: WESTERN ATLAS INT INC

Inventor： GULUNAY NECATI ,  CHAMBERS RONALD EDWARD

IPC: G01V1/28 ,  G01V1/36

公开(公告)号：NO308186B1

公开(公告)日：2000-08-07

申请号：NO951510

申请日：1995-04-20

Applicant: WESTERN ATLAS INT INC

Inventor： DRAGOSET JR WILLIAM HENRY

IPC: G01V1/36

Abstract: A method of attenuating coherent environmental noise from a multitrace digitized seismic recording adaptively creates a filter for that attenuation. The method uses the presence, on the recording, of a limited sample of pure noise that is uncontaminated by desired signal. The pure noise sample is used to discover the location of the noise source and from that discovery, to extrapolate and reconstruct the characteristics of the noise envelope as it would appear on the seismic recording. The reconstructed noise envelope is used as a noise reference for input to a conventional iterative adaptive noise cancellation filter loop (24, 28, 30) . For stability, the loop gain is minimized by temporally and spatically averaging the filter coefficients of the loop for each sample interval.

公开(公告)号：CA2147900C

公开(公告)日：2000-07-11

申请号：CA2147900

申请日：1995-04-26

Applicant: WESTERN ATLAS INT INC

Inventor： NICE SIDNEY B

IPC: E21B23/08 ,  E21B33/068 ,  B66F19/00

Abstract: The invention is a method for installing a wireline inside a coiled tubing. A first piston is attached to one end of the wireline. A pump-through head with a removable packing and a fluid inlet is attached to one end of the coiled tubing. The wireline and first piston are inserted through the pump-through head. The removable packing is reinstalled. Fluid pressure is applied by a pump to the fluid inlet. A section of wireline has been pumped into the coiled tubing. The pump is stopped. The packing is removed. A second piston for suspending the wireline from contact with the tubing is installed on the wireline. The steps are repeated at spaced apart intervals along the wireline until the wireline is inserted in the coiled tubing.

公开(公告)号：AU721038B2

公开(公告)日：2000-06-22

申请号：AU4528197

申请日：1997-11-18

Applicant: WESTERN ATLAS INT INC

Inventor： DRAGOSET WILLIAM HENRY JR ,  WARD LOUIS JOSEPH

IPC: G01V1/36