US20140327552A1 - Surface Communication System for Communication with Downhole Wireless Modem Prior to Deployment - Google Patents

Surface Communication System for Communication with Downhole Wireless Modem Prior to Deployment Download PDF

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Publication number
US20140327552A1
US20140327552A1 US14/360,293 US201214360293A US2014327552A1 US 20140327552 A1 US20140327552 A1 US 20140327552A1 US 201214360293 A US201214360293 A US 201214360293A US 2014327552 A1 US2014327552 A1 US 2014327552A1
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United States
Prior art keywords
wireless modem
wireless
communication system
transceiver assembly
tubing
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US14/360,293
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English (en)
Inventor
James G. Filas
Laurent Alteirac
Malcolm Atkinson
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Schlumberger Technology Corp
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Schlumberger Technology Corp
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Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION reassignment SCHLUMBERGER TECHNOLOGY CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ALTEIRAC, LAURENT, ATKINSON, MALCOLM, FILAS, JAMES G.
Publication of US20140327552A1 publication Critical patent/US20140327552A1/en
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    • E21B47/122—
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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
    • E21B47/16—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 drill string or casing, e.g. by torsional acoustic waves
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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

Definitions

  • the invention relates generally to a wireless communication system for communication with a wireless modem configured for use in a wellbore prior to deployment. More particularly, but not by way of limitation, the present invention relates to a wireless communication system for communication with a wireless modem configured for use in a wellbore after the wireless modem has been mounted within a housing but prior to deployment in the wellbore.
  • the communication can be, but is not limited to testing and/or controlling the state of the wireless modem and/or a downhole tool in communication with the wireless modem.
  • logging tests may be performed, and samples of formation fluids may be collected for chemical and physical analyses.
  • the information collected from logging tests and analyses of properties of sampled fluids may be used to plan and develop wellbores and for determining their viability and potential performance.
  • downhole tools are used in the testing and production of hydrocarbon wells.
  • exemplary downhole tools include flow control valves, packers, pressure gauges, and fluid samplers.
  • fluid sampling is often conducted during drill stem testing of hydrocarbon wells.
  • many types of downhole tools such as flow control valves, packers, pressure gauges, and fluid samplers are lowered into the well on a pipe string. Once the packer has been set and a cushion fluid having an appropriate density is displaced in the well above the flow control or tester valve, the valve is opened and hydrocarbons are allowed to flow to the surface where the fluids are separated and disposed of during the test.
  • the downhole tester valve is closed and the downhole pressure is allowed to build up to its original reservoir pressure.
  • downhole gauges record the transient pressure signal.
  • This transient pressure data is analyzed after the well test in order to determine key reservoir parameters of importance such as permeability and skin damage.
  • downhole fluid samples are often captured and brought to surface after the test is completed. These samples are usually analyzed in a laboratory to determine various fluid properties which are then used to assist with the interpretation of the aforementioned pressure data, establish flow assurance during commercial production phases, and determine refining process requirements among other things.
  • sampler assemblies used during well tests are typically deployed in multiple numbers together in a carrier which can position up to 8 or 9 sampler assemblies around the flow path at the same vertical position as described in U.S. Pat. No. 6,439,306.
  • the carrier is commonly known as a SCAR (Sampler carrier) assembly and serves as a differential pressure housing.
  • the SCAR assembly typically includes a top sub, a bottom sub, and a housing which couples the top and bottom subs together.
  • the sampler assemblies, including their trigger mechanisms may be attached to the top sub and enclosed within the SCAR assembly. If it is desired to capture more than one sample at the same time, the SCAR assembly design exposes each sampler to identical surrounding fluid conditions at the time of triggering. Otherwise, if the different samplers were to be distributed a vertical distance along the wellbore, then there can be no assurance that differences in pressure or temperature at the different vertical locations in the wellbore will not affect the well fluid differently causing differences in the captured fluid samples.
  • Sampler assemblies of this type have traditionally been triggered using either timer mechanisms programmed at surface before the test or by rupture disks which are burst to capture a sample by the application of annulus pressure from a pressure source at the surface.
  • An example of one timer system can be seen in U.S. Pat. No. 5,103,906, which also employs a rupture disk.
  • An example of the rupture disk design can be found in U.S. Pat. Nos. 6,439,306, 6,450,263, and 7,562,713.
  • the rupture disks when burst may allow annulus fluid to enter a chamber which contains a piston.
  • the opposing side of the piston is traditionally exposed to an atmospheric chamber.
  • the pressure differential between annulus pressure and the atmospheric chamber generates a force on the piston which is attached to a pull rod which then moves with the piston to open a regulating valve which begins the fluid sampling process as described in U.S. Pat. No. 6,439,306.
  • each disk has an accuracy range associated with it, and it is further desirable to have an unused safety range of pressure between each disk to avoid inadvertently bursting the wrong disk, and because other tools in the test string also rely on this same method for actuation, it is often the case that the maximum allowable casing pressure limits the number of disks that can be deployed in the test string.
  • samplers have traditionally been triggered all at once or in a limited number of combined groups. This restriction limits the flexibility of being able to take many samples at different times during a well test.
  • Wireless modems for downhole use exist.
  • Exemplary wireless modems use various communication mediums such as acoustic waves, electromagnetic waves or pressure pulse.
  • Acoustic modems suitable for downhole use are provided with an acoustic transceiver for wireless communication while the acoustic modem is downhole,
  • Such a wireless modem can be used to form a wireless triggering system for a downhole fluid sampler.
  • the wireless trigger can be fitted to multiple samplers permitting complete flexibility in choosing when, and in what combination, to fire the downhole samplers, and thus removing the aforementioned casing pressure limitations associated with conventional rupture disk-fired samplers.
  • Preparing individual sampler assemblies can require substantial time. Each individual sampler assembly having an acoustic modem and associated trigger must be programmed and the sampler tested for leaks. The sampler assemblies must also be sealed within the SCAR assembly prior to downhole deployment. Once the samplers have been assembled in the SCAR assembly, there is no longer physical access to the individual samplers. Therefore, further testing and reconfiguration of the sampling assembly is limited because a sampling assembly must be uninstalled in order to be tested or reconfigured. It would be advantageous to be able to communicate with the individual samplers having acoustic modems and associated triggers while the assembled SCAR assembly is at the surface without disassembling it.
  • An acoustic modem forming part of a sampler trigger will typically have a port for forming a wired communication link with a computer while the acoustic modem is at the surface.
  • the wired communication link is used for testing and configuring the acoustic modem before the acoustic modem is installed within a housing which may form a section of tubing, such as a mandrel. Once the acoustic modem is installed within the housing, the port is enclosed and unavailable unless the acoustic modem is removed from the housing.
  • an apparatus is made of a surface communication system for communicating wirelessly with a first wireless modem mounted within a section of tubing, and configured to communicate wirelessly with a second wireless modem through a tubing including the section of tubing and within a well at a distance in excess of 500 feet, comprising: a transceiver assembly adapted to be positioned on the section of tubing and in close proximity with the first wireless modem; transmitter electronics configured to provide low power signals to the transceiver assembly to cause the transceiver assembly to generate low power wireless signals into the section of tubing to be received and interpreted by the first wireless modem; and receiver electronics configured to receive and interpret high power signals from the transceiver assembly.
  • a method comprises the steps of: programming a surface communication system with at least one instruction to be transmitted to a first wireless modem, the first wireless modem configured to communicate wirelessly with a second wireless modem within a well at a distance in excess of 500 feet; placing a transceiver assembly of the surface communication system in close proximity to the first wireless modem prior to deployment of the first wireless modem in the well; and transmitting a low power wireless signal from the transceiver assembly to the first wireless modem including the at least one instruction.
  • FIG. 1 shows a schematic view of an acoustic telemetry system according to an embodiment of the present invention
  • FIG. 2 shows a schematic of an acoustic modem as used in accordance with the present disclosure
  • FIG. 3 is a longitudinal sectional view of a sampling apparatus in accordance with an embodiment described herein;
  • FIG. 4A is a cross-sectional view of the sampling apparatus taken along the lines 4 A- 4 A depicted in FIG. 3 ;
  • FIG. 4B is a cross-sectional view of the sampling apparatus taken along the lines 4 B- 4 B depicted in FIG. 3 ;
  • FIG. 5 is a diagrammatic view of a wireless communication system according to an embodiment of the present disclosure.
  • FIG. 6 is a block diagram of a wireless transceiver of the wireless communication system depicted in FIG. 5 ;
  • FIG. 7 is a diagrammatic view of another version of a wireless communication system described within the present disclosure.
  • a surface communication system described herein with reference to FIGS. 5 , 6 and 7 is configured to wirelessly communicate with a wireless modem prior to deployment of the modem within a wellbore. This is particularly applicable to downhole tools and communication systems which are used in testing installations such as are used in oil and gas wells or the like.
  • FIG. 1 shows a schematic view of a testing installation.
  • the drill string can be used to perform tests, and determine various properties of the formation through which the well 10 has been drilled.
  • the well 10 has been lined with a steel casing 12 (cased hole) in the conventional manner, although similar systems can be used in unlined (open hole) environments.
  • a sampling apparatus 13 in the well close to regions to be tested, to be able to isolate sections or intervals of the well, and to convey fluids from the regions of interest to the surface.
  • tubing 14 This is commonly done using a jointed tubular drill pipe, drill string, production tubing, or the like (collectively, tubing 14 ) which extends from well-head equipment 16 at the surface (or sea bed in subsea environments) down inside the well 10 to a zone of interest.
  • the well-head equipment 16 can include blow-out preventers and connections for fluid, power and data communication.
  • a packer 18 is positioned on the tubing 14 and can be actuated to seal the borehole around the tubing 14 at the region of interest.
  • Various pieces of downhole equipment 20 are connected to the tubing 14 above or below the packer 18 .
  • the downhole equipment 20 may also be referred to herein as a “downhole tool”.
  • the downhole equipment 20 may include, but is not limited to: additional packers; tester valves; circulation valves; downhole chokes; firing heads; TCP (tubing conveyed perforator) gun drop subs; samplers; pressure gauges; downhole flow meters; downhole fluid analyzers; and the like.
  • the surface communication system will be discussed in detail below by way of example with the sampling apparatus 13 being a particular type of downhole equipment 20 .
  • a tester valve 24 is located above the packer 18 , and the sampling apparatus 13 is located below the packer 18 , although the sampling apparatus 13 could also be placed above the packer 18 if desired.
  • the tester valve 24 is connected to a wireless modem 25 Mi+1.
  • a gauge carrier 28 a may also be placed adjacent to tester valve 24 , with each pressure gauge also being associated with an acoustic modem.
  • the sampling apparatus 13 includes a plurality of the wireless modems 25 Mi+(2-9).
  • the wireless modems 25 Mi+(1-9), operate to allow electrical signals from the tester valve 24 , the gauge carrier 28 a , and the sampling apparatus 13 to be converted into acoustic signals for transmission to the surface via the tubing 14 , and to convert acoustic tool control signals from the surface into electrical signals for operating the tester valve 24 and the sampling apparatus 13 .
  • data is meant to encompass control signals, tool status, and any variation thereof whether transmitted via digital or analog.
  • FIG. 2 shows a schematic of the wireless modem 25 Mi+2 in more detail.
  • the modem 25 Mi+2 comprises a housing 30 supporting a transceiver assembly 32 which can be a piezo electric actuator or stack, and/or a magnetorestrictive element which can be driven to create an acoustic signal in the tubing 14 .
  • the modem 25 Mi+2 can also include an accelerometer 34 and/or monitoring piezo sensor 35 for receiving acoustic signals. Where the modem 25 Mi+2 is only required to receive acoustic messages, the transceiver assembly 32 may be omitted.
  • the wireless modem 25 Mi+2 also includes transmitter electronics 36 and receiver electronics 38 located in the housing 30 and power is provided by a power source 40 , such as one or more lithium batteries. Other types of power supply may also be used.
  • the wireless modem 25 Mi+2 includes a port 41 connected to the transmitter electronics 36 and the receiver electronics 38 for forming a wired communication link with a computer (not shown).
  • the transmitter electronics 36 are arranged to initially receive an electrical output signal from a sensor 42 , for example from the downhole equipment 20 provided from an electrical or electro/mechanical interface.
  • the sensor 42 can be a pressure sensor to monitor a nitrogen charge as discussed below, or a position sensor to track a displacement of a piston which controls a sample fluid displacement in a sampler assembly discussed below.
  • the sensor 42 may not be located in the housing 30 as indicated in FIG. 2 .
  • the sensor 42 can be located in the sampler assembly.
  • the sensor may connect to the sampler trigger PCB which would in turn connect to the modem as discussed below.
  • Such signals are typically digital signals which can be provided to a micro-controller 43 which modulates the signal in any number of known ways such as PSK, QPSK, QAM, and the like.
  • the micro-controller 43 can be implemented as a single micro-controller or two or more micro-controllers working together.
  • the resulting modulated signal is amplified by either a linear or non-linear amplifier 44 and transmitted to the transceiver assembly 32 so as to generate an acoustic signal (which is also referred to herein as an acoustic message) in the material of the tubing 14 .
  • the acoustic signal passes along the tubing 14 as a longitudinal and/or flexural wave and comprises a carrier signal with an applied modulation of the data received from the sensors 42 .
  • the acoustic signal typically has, but is not limited to, a frequency in the range 1-10 kHz, preferably in the range 1-5 kHz, and is configured to pass data at a rate of, but is not limited to, about 1 bps to about 200 bps, preferably from about 5 to about 100 bps, and more preferably about 50 bps.
  • the data rate is dependent upon conditions such as the noise level, carrier frequency, and the distance between the repeaters.
  • a preferred embodiment of the present disclosure is directed to a combination of a short hop wireless modems 25 Mi ⁇ 1, 25 M and 25 Mi+1 for transmitting data between the surface and the downhole equipment 20 , which may be located above and/or below the packer 18 .
  • the wireless modems 25 Mi ⁇ 1 and 25 M can be configured as repeaters of the acoustic signals. Other advantages of the present system exist.
  • the receiver electronics 38 of the wireless modem 25 Mi+1 are arranged to receive the acoustic signal passing along the tubing 14 produced by the transmitter electronics 36 of the wireless modem 25 M.
  • the receiver electronics 38 are capable of converting the acoustic signal into an electric signal.
  • the acoustic signal passing along the tubing 14 excites the transceiver assembly 32 so as to generate an electric output signal (voltage); however, it is contemplated that the acoustic signal may excite the accelerometer 34 or the additional transceiver assembly 32 so as to generate an electric output signal (voltage).
  • This signal is essentially an analog signal carrying digital information.
  • the analog signal is applied to a signal conditioner 48 , which operates to filter/condition the analog signal to be digitalized by an A/D (analog-to-digital) converter 50 .
  • the A/D converter 50 provides a digitalized signal which can be applied to a microcontroller 52 .
  • the microcontroller 52 is preferably adapted to demodulate the digital signal in order to recover the data provided by the sensor 42 , or provided by the surface.
  • the type of signal processing depends on the applied modulation (i.e. PSK, QPSK, QAM, and the like).
  • the modem 25 Mi+2 can therefore operate to transmit acoustic data signals from sensors 42 in the downhole equipment 20 along the tubing 14 .
  • the electrical signals from the downhole equipment 20 are applied to the transmitter electronics 36 (described above) which operate to generate the acoustic signal.
  • the modem 25 Mi+2 can also operate to receive acoustic control signals to be applied to the sampling apparatus 13 .
  • the acoustic signals are demodulated by the receiver electronics 38 (described above), which operate to generate the electric control signal that can be applied to the sampling apparatus 13 .
  • a series of the wireless modems 25 Mi ⁇ 1 and 25 M, etc. may be positioned along the tubing 14 .
  • the wireless modem 25 M operates to receive an acoustic signal generated in the tubing 14 by the modem 25 Mi ⁇ 1 and to amplify and retransmit the signal for further propagation along the tubing 14 .
  • the number and spacing of the wireless modems 25 Mi ⁇ 1 and 25 M will depend on the particular installation selected, for example on the distance that the signal must travel.
  • a typical spacing between the wireless modems 25 Mi ⁇ 1, 25 M, and 25 Mi+1 is around 1,000 ft, but may be much more or much less in order to accommodate all possible testing tool configurations.
  • the acoustic signal is received and processed by the receiver electronics 38 and the output signal is provided to the microcontroller 52 of the transmitter electronics 36 and used to drive the transceiver assembly 32 in the manner described above.
  • an acoustic signal can be passed between the surface and the downhole location in a series of short hops.
  • the role of a repeater is to detect an incoming signal, to decode it, to interpret it and to subsequently rebroadcast it if required.
  • the repeater does not decode the signal but merely amplifies the signal (and the noise). In this case the repeater is acting as a simple signal booster. However, this is not the preferred implementation selected for wireless telemetry systems of the present invention.
  • the wireless modems 25 M, 25 Mi ⁇ 1, and 25 Mi+1 will either listen continuously for any incoming signal or may listen from time to time.
  • the acoustic wireless signals propagate in the transmission medium (the tubing 14 ) in an omni-directional fashion, that is to say up and down. It is not necessary for the modem 25 Mi+1 to know whether the acoustic signal is coming from the wireless modem 25 M above or one of the wireless modems 25 Mi+(2-9) below.
  • the destination of the acoustic message is preferably embedded in the acoustic message itself. Each acoustic message contains several network addresses: the address of the wireless modem 25 Mi ⁇ 1, 25 M, 25 Mi+1, or 25 Mi+(2-9) originating the acoustic message and the address of the wireless modem 25 Mi ⁇ 1, 25 M or 25 Mi+1 that is the destination.
  • the wireless modem 25 Mi ⁇ 1, 25 M, or 25 Mi+1 functioning as a repeater will interpret the acoustic message and construct a new message with updated information regarding the wireless modem 25 Mi ⁇ 1, 25 M, 25 Mi+1, or 25 Mi+(2-9) that originated the acoustic message and the destination addresses. Acoustic messages will be transmitted from the wireless modems 25 Mi ⁇ 1, 25 M, and 25 Mi+1 and slightly modified to include new network addresses.
  • a surface wireless modem 28 d is provided at the head equipment 16 which provides a connection between the tubing 14 and a data cable or wireless connection 54 to a control system 56 that can receive data from the downhole equipment 20 and provide control signals for its operation.
  • the acoustic telemetry system is used to provide communication between the surface and the downhole location.
  • the sampling apparatus 13 is preferably mounted as part of the tubing 14 , and includes a carrier 60 having a first sub 62 , a second sub 64 , and a housing section 66 coupled between the first sub 62 and the second sub 64 .
  • An inner bore 70 is defined through the carrier 60 and includes an inner passageway 72 of the first sub 62 , and an inner passageway 74 of the second sub 64 .
  • the housing section 66 defines the inner bore 70 inside the sampling apparatus 13 in which one or more sampler assemblies 80 may be positioned. In the illustrated embodiment, eight sampler assemblies 80 a - h (See FIG.
  • each of the sampler assemblies 80 has a first end 82 , as depicted in FIG. 3 by 82 c and 82 g , which is connected to the first sub 62 , and a second end 84 which is connected to a centralizer assembly 85 which is positioned just above the second sub 64 .
  • each of the sampler assemblies 80 a - h is substantially similar in construction and function and so only one of the sampler assemblies 80 c will be described in detail hereinafter.
  • the sampler assembly 80 c is provided with the wireless modem 25 Mi+2, the power source 40 c , an actuator 92 c , a sampler device 94 c , a swivel assembly 96 c , a first connector 98 c , and a second connector 100 c , all of which are rigidly connected together to form an integral assembly.
  • the second connector 100 c is connected to the centralizer assembly 85 .
  • the centralizer assembly 85 is positioned within the housing section 66 to allow the sampler assembly 80 c to expand and contract with changes in temperature.
  • Each of the sampler devices 94 preferably forms an independent self-contained system including a nitrogen charge 102 .
  • the prior art uses a single nitrogen reservoir to supply all samplers. Hence a failure of their nitrogen storage system would result in a much larger release of energy (i.e., explosion) than the nitrogen charge 102 for each of the sampler devices 94 .
  • the sampling apparatus 13 is preferably a modular tool made up of the carrier 60 and a plurality of the sampler assemblies 80 a - h which can be independently controlled by the surface using the wireless modems 25 Mi+(2-9).
  • the wireless modem 25 Mi+2 communicates with the actuator 92 for supplying control signals to the actuator 92 and for returning a signal to the surface confirming a sampling operation.
  • Incorporating the wireless modem 25 Mi+(2-9) within the sampler assemblies 80 a - h permits independent actuation of individually addressed sampler devices 94 , via surface activation while also configured to provide receipt of actuation and other diagnostic information.
  • the diagnostic information can include, for example, status of the transmitter electronics 36 , status of the receiver electronics 38 , status of telemetry link, battery voltage, or an angular position of motor shaft as described hereinafter.
  • the actuator 92 is integrated both electrically and mechanically with the wireless modem 25 Mi+2.
  • Each sampler assembly 80 a - h is preferably fully independent providing full individual redundancy. In other words, because each sampler assembly 80 a - h has its own wireless modem 25 Mi+(2-9), power source 40 , actuator 92 , and sampler device 94 , full redundancy is achieved. For example, if for any reason one of the sampler assemblies 80 a - h were to fail, the remaining sampler assemblies 80 a - h can be fired fully independently.
  • the first connector 98 c is positioned at the first end 82 c and preferably serves to solidly connect the wireless modem 25 Mi+2 to the first sub 62 to provide a suitable acoustic coupling into the tubing 14 .
  • the first connector 98 c can be implemented in a variety of manners, but for simplicity and reliability the first connector 98 c is preferably implemented as a threaded post which can engage with a threaded hole within the first sub 62 .
  • the second connector 100 c is positioned at the second end 84 c and preferably serves to connect the sampler device 94 c to the centralizer assembly 85 which serves to maintain the second end 84 c of the sampler device 94 c out against the housing section 66 .
  • the second connector 100 c is preferably non-rotatably connected to the centralizer assembly 85 , and for this reason the sampler assembly 80 c is provided with the swivel assembly 96 c to permit installation of the sampler assembly 80 c into the first sub 62 .
  • the second connector 100 c is first attached to the centralizer assembly 85 , and then the first connector 98 c is positioned within the threaded hole within the first sub 62 .
  • the swivel assembly 96 c permits the wireless modem 25 Mi+2, power source 40 c , actuator 92 c and sampler device 94 c to be rotated to thread the first connector 98 c into the threaded hole of the first sub 62 or the second sub 64 while the second connector 100 remains fixed to the centralizer.
  • the swivel assembly 96 c can be located in various positions within the sampler assembly 80 c.
  • the power source 40 c preferably includes one or more batteries, such as Lithium-thionyl chloride batteries with suitable circuitry for supplying power to the wireless modem 25 Mi+2, as well as the actuator 92 c .
  • the power source 40 c may also be provided with circuitry for de-passivating the battery before the actuator 92 c is enabled to cause the sampler device 94 c to collect a sample. Circuitry for de-passivating a battery is known in the art and will not be described in detail herein.
  • the power source 40 c can be shared between the wireless modem 25 Mi+2 and the actuator 92 c which provides for a shorter and less expensive power source 40 c . That is, assuming that the wireless modem 25 Mi+2 and the actuator 92 c use a voltage level greater than ⁇ 5 volts to operate and that a single battery cell using technology suitable for downhole applications typically produces a voltage level ⁇ 3 volts then at least 2 battery cells are required in series to produce a voltage greater than ⁇ 5-6 volts. If the wireless modem 25 Mi+2 and the actuator 92 c retain its own battery system then each would require at least 2 cells in series to provide an adequate voltage level, which would increase the length of the power source 40 c.
  • the mechanical module 106 c is connected to the sampler device 94 c for actuating the sampler device 94 c to collect a sample.
  • the electronics module 108 c functions to interpret the control signals received from the wireless modem 25 Mi+2, and to provide one or more signals to cause the mechanical module 106 c to actuate the sampler device 94 c .
  • the electronics module 108 c can be provided with one or more microcontrollers, and other circuitry for controlling the mechanical module 106 c . Methods of making and using the mechanical module 106 c and the electronics module 108 c are known in the art and so a detailed explanation of same is not necessary to teach one skilled in the art how to make and use the sampler assembly 80 c.
  • FIGS. 3 and 5 Shown in FIGS. 3 and 5 are exemplary embodiments of a surface communication system 120 constructed in accordance with the present disclosure.
  • the surface communication system 120 is provided with a transceiver assembly 122 , an electronics package 124 and a communication link 126 connecting the transceiver assembly 122 to the electronics package 124 .
  • the transceiver assembly 122 can be a pressure actuator for pulse telemetry, an antenna for electromagnetic telemetry, or a piezo electric actuator or stack, and/or a magnetorestrictive element which can be driven to provide an acoustic signal.
  • the transceiver assembly 122 will be described herein as providing acoustic signals which form stress waves within a carrier, such as the tubing 14 .
  • the tubing 14 may be constructed of steel in a manner known in the art.
  • the wireless modems 25 Mi+(2-9) are mounted within a section of the tubing 14 formed by the housing section 66 , the first sub 62 , and the second sub 64 .
  • the wireless modems 25 Mi+(2-9) are configured to communicate wirelessly with another (or second) wireless modem through the tubing 14 including the section of tubing 14 and within the well 10 at a distance in excess of 500 feet.
  • the electronics package 124 and the transceiver assembly 122 are adapted to wirelessly communicate with one or more of the wireless modems 25 Mi+(2-9) while the wireless modems 25 Mi+(2-9) are at the surface and prior to being deployed within the well 10 .
  • the transceiver assembly 122 is positioned in close proximity, e.g., within 20 feet, to one or more of the wireless modems 25 Mi+(2-9).
  • the transceiver assembly 122 is positioned on the housing section 66 generally adjacent to the wireless modems 25 Mi+(2-9) such that stress waves generated by the transceiver assembly 122 are introduced into the housing section 66 .
  • the stress waves travel to the wireless modems 25 Mi+(2-9) via the housing section 66 , and the first sub 62 .
  • stress waves introduced by the wireless modems 25 Mi+(2-9) travel to the transceiver assembly 122 via the first sub 62 and the housing section 66 .
  • the stress waves generated by the transceiver assembly 122 and introduced by the wireless modems 25 Mi+(2-9) can be indicative of data, addresses, instructions, and/or the like such that bidirectional communication is provided between the transceiver assembly 122 and the wireless modems 25 Mi+(2-9).
  • the transceiver assembly 122 converts the stress waves provided by the wireless modems 25 Mi+(2-9) into electrical signals and transmits the electrical signals to the electronics package 124 for interpretation. Likewise, the transceiver assembly 122 receives electrical signals from the electronics package 124 and convert such electrical signals into stress waves to be communicated to the wireless modems 25 Mi+(2-9).
  • the surface communication system 120 permits the operator to communicate with one or more of the wireless modems 25 Mi+(2-9) wirelessly and after the sampling apparatus 13 has been fully assembled. In particular, once the sampling apparatus 13 has been fully assembled, the housing section 66 covers and seals the ports 41 of the wireless modems 25 Mi+(2-9).
  • the wireless modems 25 Mi+(2-9) can be configured to communicate through the tubing 14 at distances in excess of 500 feet.
  • the transmitter electronics 130 FIG. 5
  • the receiver electronics 132 FIG. 6
  • the receiver electronics 132 FIG. 6
  • the high power signals are generated by one or more of the wireless modems 25 Mi+(2-9) to propagate in excess of 500 feet within the tubing 14 .
  • Signal power diminishes as length from the wireless modems 25 Mi+(2-9) increase.
  • the high power signals received by the transceiver assembly 122 (that is in close proximity to the wireless modems 25 Mi+(2-9) at the surface) are much stronger than the same signals received by another wireless modem when the sampling apparatus 13 is deployed in the well 10 .
  • the reception and interpretation of the high power signals can be implemented by the receiver electronics 132 by using a first amplifier 136 having a low gain or even negative gain to provide electrical signals from the transceiver assembly 122 to a first processing device 138 .
  • the time required to prepare the individual sampler assemblies 80 , charge the sampler assemblies 80 with nitrogen, and test for leaks around the housing section 66 can be quite long, it is undesirable to disassemble the sampling apparatus 13 to provide access to the hardwired ports 41 of the wireless modems 25 Mi+(2-9). Therefore, it is advantageous to be able to communicate with the individual sampler assemblies 80 while the assembled sampling apparatus 13 is at the surface without disassembling anything. For example, if there is an unforeseen delay in rig operations, it may be necessary to put the electronic systems into deep sleep mode in order to preserve battery power so as not to reduce the time that the sampling apparatus 13 can operate downhole.
  • the surface communication system 120 preferably allows communication with the electronics module 108 by placing the transceiver assembly 122 against the housing section 66 and/or the first sub 62 or the second sub 64 and more generally allows communication with any wireless-enabled tool when the wireless-enabled tool is at the surface, even after the wireless-enabled tool has been assembled or otherwise deeply embedded within another tool.
  • Each wireless-enabled tool such as the sampling apparatus 13 , will require some degree of configuration before being run downhole.
  • the wireless modems 25 Mi+(2-9) can be configured so that the wireless modems 25 Mi+(2-9) understand the intended function of the testing application and instructions regarding the particular sampler device 94 that the particular wireless modems 25 Mi+(2-9) are connected to.
  • the wireless modems 25 Mi+(2-9) can be configured at the surface for this functionality.
  • memory logs of the wireless modems 25 Mi+(2-9) can be initialized, and any desired time delay before the sampler device 94 becomes functional can be programmed.
  • time clocks of the wireless modems 25 Mi+(2-9) and the electronics module 108 can be synchronized with a surface data acquisition/control computer.
  • This initial configuration can be performed on the wireless modems 25 Mi+(2-9) from inside a lab cabin by physically connecting the wireless modems 25 Mi+(2-9) to a surface control computer with a cable.
  • the wireless modems 25 Mi+(2-9) can then be moved outside for assembly with the sampler devices 94 .
  • the sampler devices 94 can then be charged with nitrogen, for example, and then connected to the first sub 62 , second sub 64 , and the housing section 66 .
  • final pressure checks will be usually made—all of which represent a significant amount of preparation effort and time.
  • the surface communication system 120 can be utilized to reprogram a time delay for the wireless modems 25 Mi+(2-9) and/or the electronics module 108 or temporarily switch them off Hence, the surface communication system 120 is advantageous since the transceiver assembly 122 can be placed onto the outside surface of the assembled sampling apparatus 13 and acoustically transmit parameter changes and to check that the sampling apparatus 13 is functioning properly.
  • the sampling apparatus 13 could be put into a deep sleep state for a predetermined period of time, during which all acoustic processing is stopped and only a low power clock function is kept running, thereby reducing battery consumption to an absolute minimum. After the designated time delay, the sampling apparatus 13 would awaken and resume acoustic processing, allowing communication via the surface communication system 120 . To provide greater flexibility in managing rig delays, the sampling apparatus 13 could “wake-up” every 15 minutes or so to an idle state at pre-programmed times to check for a communication signal from the surface communication system 120 . If no signal is present, the sampling apparatus 13 would then revert to sleep mode.
  • the surface communication system 120 may also be used on a rig floor to make a final check of all wireless enabled tools before they are lowered through the rotary table.
  • Exemplary states of the wireless modems 25 Mi+(2-9) include the sleep state and the idle state discussed above.
  • the sleep state one or more electronic components or functionalities are powered off while certain electronic components or functionalities are powered on.
  • examples of the portion of the wireless modems 25 Mi+(2-9) i.e., electronic components and/or functionalities
  • examples of the wireless modems 25 Mi+(2-9) may include, certain peripheral components, the RAM, and possibly the MCU clock.
  • the wireless modems 25 Mi+(2-9) are powered on and waited for a command.
  • the surface communication system 120 is preferably portable and suitable for Zone 0 operation. It could either be powered by battery or via a power cable.
  • a hand-carryable enclosure, containing one or more batteries, the transceiver assembly 122 , and/or the electronics package 124 can be used.
  • the electronics package 124 can be connected via a short cable (communication link 126 ) to the transceiver assembly 122 , which may have a magnetic base for maintaining the transceiver assembly 122 securely attached to the housing section 66 , for example.
  • the electronics package 124 may provide simple built-in tool-check commands, or the electronics package 124 may have the ability to support more complex programming/configuration of any acoustic-enabled downhole tools, such as the sampling apparatus 13 .
  • the electronics package 124 can operate autonomously or the electronics package 124 could be connected to a user interface device 140 , such as a portable computer, as shown in FIG. 5 to provide an additional communication interface and display or processing capabilities.
  • FIG. 6 Shown in FIG. 6 is a block diagram of the surface communication system 120 .
  • the electronics package 124 of the surface communication device 120 includes transmitter electronics 130 and receiver electronics 132 .
  • Power for the transmitter electronics 130 and the receiver electronics 132 can be provided by means of one or more battery, such as a lithium battery 134 . Other types of power supply may also be used.
  • the transmitter electronics 130 are arranged to initially receive an electrical output signal from the user interface device 140 indicative of a predetermined command or instruction to be provided to one or more of the wireless modems 25 Mi+(2-9).
  • the command can identify one or more of the wireless modems 25 Mi+(2-9), as well as include instructions to place one or more of the wireless modems 25 Mi+(2-9) into a deep sleep mode for a predetermined period of time, during which all acoustic processing is stopped and only a low power clock function is kept running to reduce battery consumption as discussed above.
  • Such signals are typically digital signals which can be provided to a processing device 142 , such as a logic device or a microprocessor.
  • the logic device may not operate on a set of instructions stored on a non-transitory computer readable medium.
  • Exemplary logic devices include a field programmable gate array or an application specific integrated circuit.
  • the microprocessor operates on a set of instructions stored on a non-transitory computer readable medium.
  • the microprocessor can be implemented in various forms, such as one or more microprocessor, micro-controller or the like. In either case, the processing device 142 modulates the signal in any number of known ways such as PSK, QPSK, QAM, and the like.
  • the processing device 142 can be implemented as a single device, or two or more devices working together.
  • the transmitter electronics 130 and the receiver electronics 132 are configured to use the same data rate, and encoding scheme(s) as the wireless modems 25 Mi+(2-9) to permit communication therebetween.
  • the resulting modulated signal is amplified by either a linear or non-linear amplifier 144 and transmitted to the transceiver assembly 122 so as to generate an acoustic signal (which is also referred to herein as an acoustic message) in the material of the sampling apparatus 13 .
  • the amplifier 144 is adapted to produce electrical signals to cause the transceiver assembly 122 to generate low power signals for reception by the wireless modems 25 Mi+(2-9).
  • the primary reason for transmitting at low or reduced power by the surface communication system 120 with the wireless modems 25 Mi+(2-9) is to avoid saturating the transceiver assembly 32 when the surface communication system 120 is placed very near the downhole tool.
  • Low power signals refers to signals having a power in a range between 0.1 to 3 watts, and preferably from 0.1 to 1.5 watts.
  • the user interface device 140 can be one or more devices capable of receiving operator input and then providing signals to the processing device 142 .
  • the user interface device 140 can be a keyboard, keypad, microphone, tablet and/or the like.
  • the user interface device 140 can be a separate portable computer as set forth in FIG. 5 .
  • the surface communication system 120 can therefore operate to transmit acoustic data signals from a user, either preprogrammed or from a user input device, such as a portable computer, to the wireless modems 25 Mi+(2-9) prior to deployment.
  • electrical signals from the user are applied to the transmitter electronics 130 (described above) which operate to generate the acoustic signal.
  • the surface communication system 120 can also operate to receive acoustic response signals from the wireless modems 25 Mi+(2-9).
  • the acoustic signals are demodulated by the receiver electronics 132 (described above), which operate to generate the electrical response signal giving information about the state of particular ones of the wireless modems 25 Mi+(2-9).
  • modems and the transceiver assembly have been described herein by way of example as acoustic modems using stress waves as a communication medium. It should be understood that the modems and the transceiver assembly 122 can use other types of wireless mediums, such as pressure pulse signals, electromagnetic signals, mechanical signals and the like. As such, any type of telemetry may be used to pass signals between the transceiver assembly and the modems.
  • FIG. 7 Shown in FIG. 7 is another example of a surface communication system 120 a constructed in accordance with the present disclosure.
  • the surface communication system 120 a operates in a similar manner as the surface communication system 120 discussed above, but is implemented utilizing a commercially available portable device, such as a cellular telephone sold under the trademark IPHONE version 4 and produced by the Apple Corporation.
  • the wireless communication system 120 a can be provided with a speaker 150 , a microphone 152 , a display 154 , one or more communication devices 156 , and input unit 158 , a non-transitory computer readable medium such as a memory 159 and a processor 160 .
  • the speaker 150 , the microphone 152 , the display 154 , the one or more communication devices 156 , the input unit 158 and the memory 159 are adapted to communicate either directly or indirectly with the processor 160 such that the processor 160 can either provide data and/or read data read data from such devices.
  • the surface communication system 120 a may also be provided with a volume control 162 for a purpose to be described hereinafter.
  • the volume control 162 can either be a physical switch, or such functionality can be programmed into or provided by the processor 160 .
  • the speaker 150 and a microphone 152 form parts of a transceiver assembly 164 for communicating with the wireless modems 25 Mi+(2-9) by the housing section 66 , first sub 62 and second sub 64 .
  • the microphone 152 can be used to receive and forward acoustic signals to the processor 160 , and the speaker 150 can be driven by the processor 160 to produce acoustic signals.
  • the volume control 162 controls the level of the acoustic signals that are generated by the speaker 150 .
  • the processor 160 can be constructed in a similar manner as the processing device 142 , discussed above.
  • the display 154 can be a liquid crystal display or any other display suitable for use in a portable device.
  • the one or more communication devices 156 can be a cellular telephone, and/or a short range communication system such as that sold under the trademark Bluetooth. Communication devices such as cellular telephones and/or the like are well known to those skilled in the art and so a detailed description of how to make and use same is not deemed necessary herein.
  • the input unit 158 can be a keyboard and/or a touchscreen and serves to provide user input to the processor 160 .
  • the memory 159 can be random access memory, flash memory or the like.
  • the microphone 152 can be used to record acoustic signals indicative of predetermined instructions and save such acoustic signals in a file on the surface communication system 120 a .
  • files can be selected utilizing the input unit 158 and played by the speaker 150 to communicate such acoustic signals to the wireless modems 25 Mi+(2-9).
  • one of the files can be selected and then actuated for playing by the speaker 150 .
  • the surface communication system 120 a can then be placed on to the housing section 66 of the sampling apparatus 13 such that the housing section 66 receives the acoustic signals generated by the speaker 150 and conveys such acoustic signals via stress waves to the wireless modems 25 Mi+(2-9).

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US14/360,293 2011-11-24 2012-11-13 Surface Communication System for Communication with Downhole Wireless Modem Prior to Deployment Abandoned US20140327552A1 (en)

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EP11290541.9A EP2597491A1 (en) 2011-11-24 2011-11-24 Surface communication system for communication with downhole wireless modem prior to deployment
EP11290541.9 2011-11-24
PCT/IB2012/056392 WO2013076620A1 (en) 2011-11-24 2012-11-13 Surface communication system for communication with downhole wireless modem prior to deployment

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