WO1990014497A2 - Process and device for transmitting data signals and/or control signals in a pipe train - Google Patents
Process and device for transmitting data signals and/or control signals in a pipe train Download PDFInfo
- Publication number
- WO1990014497A2 WO1990014497A2 PCT/EP1990/000837 EP9000837W WO9014497A2 WO 1990014497 A2 WO1990014497 A2 WO 1990014497A2 EP 9000837 W EP9000837 W EP 9000837W WO 9014497 A2 WO9014497 A2 WO 9014497A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- unit
- signals
- control signals
- transmitter
- receiver unit
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 67
- 238000005553 drilling Methods 0.000 claims abstract description 29
- 230000001939 inductive effect Effects 0.000 claims abstract description 21
- 230000005236 sound signal Effects 0.000 claims abstract description 17
- 238000012545 processing Methods 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 7
- 238000002604 ultrasonography Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 6
- 230000008054 signal transmission Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
- E21B47/18—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/028—Electrical or electro-magnetic connections
- E21B17/0283—Electrical or electro-magnetic connections characterised by the coupling being contactless, e.g. inductive
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/13—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. radio frequency
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
- H01F2038/143—Inductive couplings for signals
Definitions
- the invention relates to methods and devices for transmitting information and / or control signals in a drill string during the operation of a drilling device, in particular also to methods and devices for transmitting information and / or control signals from the borehole to the earth's surface, wherein Data between a data acquisition and / or control unit and a processor are passed on as information and / or control signals on a transmission link from a transmitter unit to a receiver unit.
- the devices for information data acquisition and the processor for converting the data into a sequence of electrical control signals are combined in the same housing insert or in separate, immediately adjacent housing inserts which, for. B. can be galvanically coupled to one another by plug connections.
- Such an arrangement is, however, only suitable for devices for recording such data which do not occur, or which do not occur in a particularly selective manner, as is __. B. for inclination, azimuth, temperature or pressure applies.
- From DE-PS 34 28 931 devices are also known in which determined information and control data signals are transmitted as pressure pulses from a transmitter via the rinsing fluid of the drilling device to a receiver unit and from there to the processor.
- This object is achieved in the method according to the invention of the type mentioned at the outset by the features specified in the characterizing part of claims 1 and 14.
- Devices according to the invention are initially characterized by the features specified in claims 4 and 23.
- An essential advantage which goes hand in hand with the method and the devices according to the invention, is moreover that information and / or control signals from a z. B. v / uring the drilling operation fixed outer tube can be transferred to a rotating inner tube without contact. Furthermore, the transmission of data signals is possible in two directions with little effort, so that a receiver unit can operate as a transmitter unit without any problems, for example by B. selected frequency ranges can be assigned as a transmitter or receive operation. Filters can be provided for this purpose. Likewise, these two-fold operational tasks can also be implemented by suitable control circuits.
- the transmission elements required for inductive data transmission and / or sound signal transmission are known components which can only be adjusted or designed for the operationally optimized transmission conditions depending on the application.
- z. B. as a magnetic inductive coupler both as a transmitter and as a receiver unit, induction loops or bobbins are suitable, the number or diameter of turns of which must be suitably adapted to the operating conditions.
- Magnetic field-sensitive semiconductor sensors are also suitable as inductive magnetic receiver units.
- Drill pipe available these can be galvanically z. B. to be provided by cable connections, but also connected to each other via electrically conductive Bohrrohrwandungsmaschine. Electrically conductive Bohrrohrwandungsmaschine can outward or inward such the transfer tasks of z. B. bobbins adapted that they have a sufficient gap to the bobbin so as not to influence the alternating magnetic fields due to their electrical conductivity in the transmission result falsifying. It is possible to transmit the signals to be magnetically transmitted and also the sound signals using only one transmitter / receiver unit via a plurality of pipes connected to one another. A frequency of up to approximately 100 Hz is expediently chosen for the signals to be magnetically transmitted in order to keep eddy current losses and the like as low as possible.
- Frequency range between 1 and 20 kHz has proven to be useful.
- the wall of the drill pipe is also initially suitable for transmitting structure-borne sound signals from a transmitter unit to a receiver unit.
- the borehole piping is suitable for the transmission of structure-borne noise.
- the transmitter and receiver units can be designed as piezo transducers.
- Both the magnetically inductive couplers and the transmission links having sound sensors or receivers can each be coupled to a further transmission link, which e.g. B. from DE-PS 34 28 931 known transmission elements as transmitter and receiver units, such as. B. pressure pulse transmitter.
- a further transmission link which e.g. B. from DE-PS 34 28 931 known transmission elements as transmitter and receiver units, such as. B. pressure pulse transmitter.
- the Pressure pulses over the one forming the further transmission link
- Rinsing liquid of the drilling device are transmitted to the pressure pulse receiver unit, which is connected in a known manner to the processor for processing the received information and control signals.
- Figure 1 shows a first embodiment of a device according to the invention with ultrasound transmission.
- FIG. 2 shows a further exemplary embodiment of the device according to the invention in the case of a drill string for directional drilling with, on the one hand, structure-borne sound signal transmission and subsequent pressure pulse signal transmission;
- FIG. 3 shows a further exemplary embodiment of a device according to the invention with structure-borne sound signal transmission
- FIG. 4 shows a further exemplary embodiment of the device according to the invention with, on the one hand, magnetically inductive signal transmission from a pressure force sensor and, on the other hand, pressure pulse data transmission for pressure force signals and for orientation and direction data signals from a further sensor;
- FIG. 5 shows a further exemplary embodiment of the device according to the invention with pressure pulse signal transmission of inclination and direction measurement data signals to the processor and with structure-borne noise signal transmission of the inclination and direction measurement data to a directional drilling tool, and
- the drilling devices with devices according to the invention illustrated in the drawing each comprise a drill string, designated as a whole as 1, with an inner channel 2 and an annular space 3 surrounding the drill pipe string 1.
- compressed air is in at 4 let in the inner channel 2, which on its way to the bottom of the borehole passes a drilling turbine (not shown in detail) and exits into the borehole through nozzles of a rotary drill bit 5 driven by the drilling turbine and returns to the earth surface at 6 through the annular space 3 surrounding the drill string 1.
- the rotary drill bit 5 there is a direction and inclination sensor 7, which is connected to an ultrasonic transmitter 8 in the inner channel 2. Via the air column in the inner channel 2, the ultrasound signals are forwarded to an ultrasound receiver 9, which is galvanically connected to the processor 10, to the processor for further processing or evaluation.
- the drill string 1 is used for directional drilling.
- the drill string 1 in turn has an inner channel 2 and an annular space 3 surrounding the drill string 1.
- flushing liquid is pumped down through the inner channel 2 by means of a pump (not shown), which, on its way to the bottom of the borehole, has a not shown Drills the turbine and exits into the borehole through nozzles of the rotary drill bit 5 driven by the drilling turbine and returns to the earth's surface through the annular space 3 surrounding the drill pipe string.
- a sensor for inclination and direction measurement data is arranged above the rotary drill bit 7 and is connected to the structure-borne noise sensor 11.
- a joint piece 13 is provided for the drilling pipe carrying the sound transmitter 11 and the underground drilling motor 12 with a flushing drive.
- Another joint piece is located between the motor 12 and the drill pipe carrying the structure-borne sound receiver 14
- the inclination and direction measurement data determined by the sensor 17 are conducted by structure-borne noise from the sensor 11 to the receiver 14. Above the receiver
- a pressure pulse transmitter 15 of known type is arranged 14, which transmits the signals received by the receiver 14 to the pressure pulse receiver over a further transmission path, which is formed by the coil fluid in the inner tube 2
- the exemplary embodiment according to FIG. 3 is constructed analogously to the short-range data structure-borne sound signal transmission as the exemplary embodiment according to FIG. 2.
- the signals received by the structure-borne sound receiver 14 are further processed in the processor 10 after being converted into electrical signals.
- a first sensor is located above the rotary drill bit 5 of the drill string 1
- the coil former 18 is a transmitter for the magnetically inductive transmission of the received signals to a coil former 20 coupled with the coil 18 via the free air gap 19 and thus represents the receiver of this magnetically inductive transmission path, so that the data transmission is contactless from the rotating ones Parts 5, 17 and the outer tube 21 of the drill string 1 carrying the bobbin 18 are carried out on the non-rotating bore tube wall parts 22 and the drill motor 23 connected thereto.
- the signals from the sensor 17 are transmitted via the underground motor 23 by means of galvanic coupling a cable connection 24 is forwarded to an inclination and friction sensor 25.
- the measurement data generated in the two sensor units 17 and 25 are then forwarded together by the pressure pulse transmitter unit via the winding liquid column in channel 2 of the drill pipe in a known manner to the pressure pulse receiver 16 and from there transmitted via a cable connection to the processor after conversion into electrical signals.
- an inclination and direction sensor is connected both to a pressure pulse transmitter 27 for transmitting the inclination and direction measurement signals to the pressure pulse receiver 28 and forwarded to processor 10 after conversion into electrical signals, and also via a cable connection 29 a structure-borne sound transmitter 30 for short-range data transmission to a structure-borne sound receiver 31.
- a pressure pulse transmitter 27 for transmitting the inclination and direction measurement signals to the pressure pulse receiver 28 and forwarded to processor 10 after conversion into electrical signals
- a structure-borne sound transmitter 30 for short-range data transmission to a structure-borne sound receiver 31.
- antimagnetic collars 32 there are a number of antimagnetic collars 32 so as not to influence the determination of the inclination and direction data using magnetically sensitive sensors.
- the control signals transmitted by the inclination and direction sensor 26 via structure-borne noise to the structure-borne noise receiver 31 are transmitted to the directional drilling tool 34 via a cable connection 33, so that when there are deviations between a predetermined direction or inclination and the actual value detected by the sensor 26 -Value control movements are to be carried out until the deviation has decreased within a specifiable tolerance range.
- transmission devices and sensors can generally require both further electronic components for signal processing and batteries or generators driven by the drilling fluid or rotating drill string parts for generating electrical energy, which are known per se and in each case can be provided in a suitable manner.
- FIG. 6 is a broken cross-sectional view an exemplary embodiment illustrates the possibility of arranging a magnetically inductive transmitter / receiver unit at opposite end regions of inner tubes of a drill pipe string.
- the two inner tubes 35 and 36 to be coupled together are screwed into one another in a known manner.
- the inner end of the tubular part 36 in the drawing shows at its front edges the coil body 20 (according to the embodiment of FIG. 4), whereas in a recess
- the coil formers 18 and 20 are each at a sufficient lateral distance from the wall areas of the tube wall part 35, so that the transmission results are not falsified due to the electrical conductivity properties of the tube wall material.
- the coil former 18 serves here as a magnetically inductive transmitter for via the cable
- the magnetically inductively transmitted signals are to be forwarded from the coil body 20 acting as a receiver via the cable connection 40 to a downstream control or transmitter or receiver part.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP90908523A EP0426820B1 (en) | 1989-05-23 | 1990-05-23 | Process and device for transmitting data signals and/or control signals in a pipe train |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP3916704.6 | 1989-05-23 | ||
DE3916704A DE3916704A1 (en) | 1989-05-23 | 1989-05-23 | SIGNAL TRANSMISSION IN DRILL RODS |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1990014497A2 true WO1990014497A2 (en) | 1990-11-29 |
WO1990014497A3 WO1990014497A3 (en) | 1991-01-10 |
Family
ID=6381197
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1990/000837 WO1990014497A2 (en) | 1989-05-23 | 1990-05-23 | Process and device for transmitting data signals and/or control signals in a pipe train |
Country Status (3)
Country | Link |
---|---|
EP (2) | EP0399987A1 (en) |
DE (1) | DE3916704A1 (en) |
WO (1) | WO1990014497A2 (en) |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0539240A2 (en) * | 1991-10-25 | 1993-04-28 | Akishima Laboratories (Mitsui Zosen) Inc. | Measurement-while-drilling system |
NL9220014A (en) * | 1991-04-17 | 1994-05-02 | Hcs Leasing Corp | Short step connecting link for MWD system in the bottom of a borehole. |
EP0636763A2 (en) * | 1993-07-26 | 1995-02-01 | Baker Hughes Incorporated | Method and apparatus for electric/acoustic telemetry in a well |
GB2341754A (en) * | 1998-09-19 | 2000-03-22 | Cryoton | Adaptive control of power output from magnetic dipole and current dipole in drill string telemetry transmitter |
US6641434B2 (en) | 2001-06-14 | 2003-11-04 | Schlumberger Technology Corporation | Wired pipe joint with current-loop inductive couplers |
US6670880B1 (en) | 2000-07-19 | 2003-12-30 | Novatek Engineering, Inc. | Downhole data transmission system |
US6717501B2 (en) | 2000-07-19 | 2004-04-06 | Novatek Engineering, Inc. | Downhole data transmission system |
US6866306B2 (en) | 2001-03-23 | 2005-03-15 | Schlumberger Technology Corporation | Low-loss inductive couplers for use in wired pipe strings |
US6950034B2 (en) | 2003-08-29 | 2005-09-27 | Schlumberger Technology Corporation | Method and apparatus for performing diagnostics on a downhole communication system |
US7019665B2 (en) | 2003-09-02 | 2006-03-28 | Intelliserv, Inc. | Polished downhole transducer having improved signal coupling |
US7040415B2 (en) | 2003-10-22 | 2006-05-09 | Schlumberger Technology Corporation | Downhole telemetry system and method |
US7096961B2 (en) | 2003-04-29 | 2006-08-29 | Schlumberger Technology Corporation | Method and apparatus for performing diagnostics in a wellbore operation |
US7413021B2 (en) | 2005-03-31 | 2008-08-19 | Schlumberger Technology Corporation | Method and conduit for transmitting signals |
US7777644B2 (en) | 2005-12-12 | 2010-08-17 | InatelliServ, LLC | Method and conduit for transmitting signals |
US7912678B2 (en) | 1999-02-17 | 2011-03-22 | Denny Lawrence A | Oilfield equipment identification method and apparatus |
US7913773B2 (en) | 2005-08-04 | 2011-03-29 | Schlumberger Technology Corporation | Bidirectional drill string telemetry for measuring and drilling control |
WO2011049733A2 (en) * | 2009-10-20 | 2011-04-28 | Schlumberger Canada Limited | Instrumented disconnecting tubular joint |
US8192213B2 (en) | 2009-10-23 | 2012-06-05 | Intelliserv, Llc | Electrical conduction across interconnected tubulars |
US8727035B2 (en) | 2010-08-05 | 2014-05-20 | Schlumberger Technology Corporation | System and method for managing temperature in a wellbore |
US8857510B2 (en) | 2009-04-03 | 2014-10-14 | Schlumberger Technology Corporation | System and method for determining movement of a drilling component in a wellbore |
US9063250B2 (en) | 2009-08-18 | 2015-06-23 | Schlumberger Technology Corporation | Interference testing while drilling |
EP3023578A1 (en) | 2009-10-30 | 2016-05-25 | Intelliserv International Holding, Ltd | System and method for determining stretch or compression of a drill string |
US9366092B2 (en) | 2005-08-04 | 2016-06-14 | Intelliserv, Llc | Interface and method for wellbore telemetry system |
US10301931B2 (en) | 2014-06-18 | 2019-05-28 | Evolution Engineering Inc. | Measuring while drilling systems, method and apparatus |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3916704A1 (en) * | 1989-05-23 | 1989-12-14 | Wellhausen Heinz | SIGNAL TRANSMISSION IN DRILL RODS |
FR2757718B1 (en) * | 1996-12-23 | 1999-02-12 | Setmat | ELECTROMAGNETIC TRANSMISSION EQUIPMENT FOR FLEXIBLE PIPES FOR DELIVERY OF FLUID PRODUCTS |
FR2829889B1 (en) * | 2001-09-20 | 2004-04-02 | Setmat | INSERTION OF AN AIR COIL OF AN ELECTROMAGNETIC TRANSMISSION LINE WITHIN EACH SEAL OF THE TWO END COUPLERS OF A FLEXIBLE PIPE ELEMENT |
NO315068B1 (en) | 2001-11-12 | 2003-06-30 | Abb Research Ltd | An electrical coupling device |
US7163065B2 (en) | 2002-12-06 | 2007-01-16 | Shell Oil Company | Combined telemetry system and method |
US6830467B2 (en) | 2003-01-31 | 2004-12-14 | Intelliserv, Inc. | Electrical transmission line diametrical retainer |
US7852232B2 (en) | 2003-02-04 | 2010-12-14 | Intelliserv, Inc. | Downhole tool adapted for telemetry |
DE102010047568A1 (en) | 2010-04-12 | 2011-12-15 | Peter Jantz | Device for transmitting information about drill pipe |
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US2379800A (en) * | 1941-09-11 | 1945-07-03 | Texas Co | Signal transmission system |
US2547875A (en) * | 1936-10-29 | 1951-04-03 | Schlumberger Well Surv Corp | Apparatus for taking physical measurements in boreholes |
US3090031A (en) * | 1959-09-29 | 1963-05-14 | Texaco Inc | Signal transmission system |
US3588804A (en) * | 1969-06-16 | 1971-06-28 | Globe Universal Sciences | Telemetering system for use in boreholes |
FR2303153A1 (en) * | 1973-08-23 | 1976-10-01 | Sun Oil Co Pennsylvania | TELEMEASURE SYSTEM FOR BOREHOLE WELLS |
US4293936A (en) * | 1976-12-30 | 1981-10-06 | Sperry-Sun, Inc. | Telemetry system |
US4314365A (en) * | 1980-01-21 | 1982-02-02 | Exxon Production Research Company | Acoustic transmitter and method to produce essentially longitudinal, acoustic waves |
US4605268A (en) * | 1982-11-08 | 1986-08-12 | Nl Industries, Inc. | Transformer cable connector |
WO1988001096A1 (en) * | 1986-08-07 | 1988-02-11 | Contrology Products Limited | Rotary signal coupler |
FR2617901A1 (en) * | 1987-07-06 | 1989-01-13 | Alsthom | Process for drilling with electromagnetic transmission of information from the bottom of the shaft |
EP0330558A1 (en) * | 1988-02-22 | 1989-08-30 | Institut Français du Pétrole | Method and device for transmitting information by cable and by mud waves |
DE3916704A1 (en) * | 1989-05-23 | 1989-12-14 | Wellhausen Heinz | SIGNAL TRANSMISSION IN DRILL RODS |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2414719A (en) * | 1942-04-25 | 1947-01-21 | Stanolind Oil & Gas Co | Transmission system |
FR2165074A5 (en) * | 1971-12-16 | 1973-08-03 | Drogo Pierre |
-
1989
- 1989-05-23 DE DE3916704A patent/DE3916704A1/en not_active Withdrawn
-
1990
- 1990-05-22 EP EP90870079A patent/EP0399987A1/en not_active Withdrawn
- 1990-05-23 WO PCT/EP1990/000837 patent/WO1990014497A2/en active IP Right Grant
- 1990-05-23 EP EP90908523A patent/EP0426820B1/en not_active Expired - Lifetime
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
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US2547875A (en) * | 1936-10-29 | 1951-04-03 | Schlumberger Well Surv Corp | Apparatus for taking physical measurements in boreholes |
US2379800A (en) * | 1941-09-11 | 1945-07-03 | Texas Co | Signal transmission system |
US3090031A (en) * | 1959-09-29 | 1963-05-14 | Texaco Inc | Signal transmission system |
US3588804A (en) * | 1969-06-16 | 1971-06-28 | Globe Universal Sciences | Telemetering system for use in boreholes |
FR2303153A1 (en) * | 1973-08-23 | 1976-10-01 | Sun Oil Co Pennsylvania | TELEMEASURE SYSTEM FOR BOREHOLE WELLS |
US4293936A (en) * | 1976-12-30 | 1981-10-06 | Sperry-Sun, Inc. | Telemetry system |
US4314365A (en) * | 1980-01-21 | 1982-02-02 | Exxon Production Research Company | Acoustic transmitter and method to produce essentially longitudinal, acoustic waves |
US4605268A (en) * | 1982-11-08 | 1986-08-12 | Nl Industries, Inc. | Transformer cable connector |
WO1988001096A1 (en) * | 1986-08-07 | 1988-02-11 | Contrology Products Limited | Rotary signal coupler |
FR2617901A1 (en) * | 1987-07-06 | 1989-01-13 | Alsthom | Process for drilling with electromagnetic transmission of information from the bottom of the shaft |
EP0330558A1 (en) * | 1988-02-22 | 1989-08-30 | Institut Français du Pétrole | Method and device for transmitting information by cable and by mud waves |
DE3916704A1 (en) * | 1989-05-23 | 1989-12-14 | Wellhausen Heinz | SIGNAL TRANSMISSION IN DRILL RODS |
Cited By (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL9220014A (en) * | 1991-04-17 | 1994-05-02 | Hcs Leasing Corp | Short step connecting link for MWD system in the bottom of a borehole. |
EP0539240A2 (en) * | 1991-10-25 | 1993-04-28 | Akishima Laboratories (Mitsui Zosen) Inc. | Measurement-while-drilling system |
EP0539240B1 (en) * | 1991-10-25 | 1997-08-06 | Akishima Laboratories (Mitsui Zosen) Inc. | Measurement-while-drilling system |
EP0636763A2 (en) * | 1993-07-26 | 1995-02-01 | Baker Hughes Incorporated | Method and apparatus for electric/acoustic telemetry in a well |
EP0636763A3 (en) * | 1993-07-26 | 1995-08-09 | Baker Hughes Inc | Method and apparatus for electric/acoustic telemetry in a well. |
GB2341754B (en) * | 1998-09-19 | 2002-07-03 | Cryoton | Drill string telemetry |
GB2341754A (en) * | 1998-09-19 | 2000-03-22 | Cryoton | Adaptive control of power output from magnetic dipole and current dipole in drill string telemetry transmitter |
US6445307B1 (en) | 1998-09-19 | 2002-09-03 | Cryoton (Uk) Limited | Drill string telemetry |
US9534451B2 (en) | 1999-02-17 | 2017-01-03 | Den-Con Electronics, Inc. | Oilfield equipment identification method and apparatus |
US7912678B2 (en) | 1999-02-17 | 2011-03-22 | Denny Lawrence A | Oilfield equipment identification method and apparatus |
US6670880B1 (en) | 2000-07-19 | 2003-12-30 | Novatek Engineering, Inc. | Downhole data transmission system |
US6717501B2 (en) | 2000-07-19 | 2004-04-06 | Novatek Engineering, Inc. | Downhole data transmission system |
US6866306B2 (en) | 2001-03-23 | 2005-03-15 | Schlumberger Technology Corporation | Low-loss inductive couplers for use in wired pipe strings |
US6641434B2 (en) | 2001-06-14 | 2003-11-04 | Schlumberger Technology Corporation | Wired pipe joint with current-loop inductive couplers |
EP1367216A2 (en) | 2002-05-31 | 2003-12-03 | Schlumberger Technology B.V. | Wired pipe joint with current-loop inductive couplers |
US7096961B2 (en) | 2003-04-29 | 2006-08-29 | Schlumberger Technology Corporation | Method and apparatus for performing diagnostics in a wellbore operation |
US6950034B2 (en) | 2003-08-29 | 2005-09-27 | Schlumberger Technology Corporation | Method and apparatus for performing diagnostics on a downhole communication system |
US7019665B2 (en) | 2003-09-02 | 2006-03-28 | Intelliserv, Inc. | Polished downhole transducer having improved signal coupling |
US7040415B2 (en) | 2003-10-22 | 2006-05-09 | Schlumberger Technology Corporation | Downhole telemetry system and method |
US7413021B2 (en) | 2005-03-31 | 2008-08-19 | Schlumberger Technology Corporation | Method and conduit for transmitting signals |
US7913773B2 (en) | 2005-08-04 | 2011-03-29 | Schlumberger Technology Corporation | Bidirectional drill string telemetry for measuring and drilling control |
US9366092B2 (en) | 2005-08-04 | 2016-06-14 | Intelliserv, Llc | Interface and method for wellbore telemetry system |
US7777644B2 (en) | 2005-12-12 | 2010-08-17 | InatelliServ, LLC | Method and conduit for transmitting signals |
US8857510B2 (en) | 2009-04-03 | 2014-10-14 | Schlumberger Technology Corporation | System and method for determining movement of a drilling component in a wellbore |
US9063250B2 (en) | 2009-08-18 | 2015-06-23 | Schlumberger Technology Corporation | Interference testing while drilling |
WO2011049733A3 (en) * | 2009-10-20 | 2011-07-14 | Schlumberger Canada Limited | Instrumented disconnecting tubular joint |
US8851175B2 (en) | 2009-10-20 | 2014-10-07 | Schlumberger Technology Corporation | Instrumented disconnecting tubular joint |
WO2011049733A2 (en) * | 2009-10-20 | 2011-04-28 | Schlumberger Canada Limited | Instrumented disconnecting tubular joint |
US8192213B2 (en) | 2009-10-23 | 2012-06-05 | Intelliserv, Llc | Electrical conduction across interconnected tubulars |
EP3023578A1 (en) | 2009-10-30 | 2016-05-25 | Intelliserv International Holding, Ltd | System and method for determining stretch or compression of a drill string |
US8727035B2 (en) | 2010-08-05 | 2014-05-20 | Schlumberger Technology Corporation | System and method for managing temperature in a wellbore |
US10301931B2 (en) | 2014-06-18 | 2019-05-28 | Evolution Engineering Inc. | Measuring while drilling systems, method and apparatus |
Also Published As
Publication number | Publication date |
---|---|
EP0426820B1 (en) | 1996-01-17 |
WO1990014497A3 (en) | 1991-01-10 |
DE3916704A1 (en) | 1989-12-14 |
EP0426820A1 (en) | 1991-05-15 |
EP0399987A1 (en) | 1990-11-28 |
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