EP2558682A2

EP2558682A2 - Communication system for transmitting information relating to drilling rods

Info

Publication number: EP2558682A2
Application number: EP11735590A
Authority: EP
Inventors: Peter Jantz; Klaus Hartmann; Wolf-Henning Twelsiek
Original assignee: Universitaet Siegen
Current assignee: Universitaet Siegen
Priority date: 2010-04-12
Filing date: 2011-04-12
Publication date: 2013-02-20
Anticipated expiration: 2031-04-12
Also published as: DE102010047568A1; WO2011128068A2; DK2558682T3; WO2011128068A3; EP2558682B1; US20130027216A1; PL2558682T3; US9982529B2

Abstract

The invention relates to a communication system for transmitting information relating to drilling rods of a drill string for earth boreholes. The system comprises a plurality of drilling rods (3, 4, 5, 6, 8, 9, 10, 80) which can be connected to one another, a drill drive (7) and a surface computer (100, 101), wherein at least a drilling rod (8, 80) has a receptacle for a drill head and sensors and/or actuators, to or from which data are to be transmitted to or from the surface computer (100, 101). In this case, each drilling rod is formed from a drill pipe (11) which is in the form of a hollow cylinder and has at least one line (21, 22) extending in the axial direction and has an upper end (13) and a lower end (14). Communication units, between which data is interchanged via the at least one electrical line (21, 22), are respectively arranged at the ends (13, 14), wherein the communication units (17, 19) transmit data to the respectively adjacent communication unit (17, 19) of the connected drilling rod by radio.

Description

Communication system for transmitting information about

drill pipe

The invention relates to a communication system for the transmission of

Information about drill pipe of a drill string for earth bores, comprising a first drill pipe, one or more second drill pipe and a drill drive, wherein the first drill pipe and the second (s) drill string each consist of a hollow cylindrical

Drill pipe is formed with at least one axially extending line and with an upper end and a lower end, the lower end of the first drill string a receptacle for a

Drill head, each of the second drill string with its lower end to the upper end of the first drill string or another second drill string rotatably connected and with its upper end to the lower end of another second drill pipe or with the

Drill drive is rotatably connected, wherein a sensor and / or actuators are to be transmitted from or to the measurement, parameterization, status and / or control data at the lower end of the first drill string and / or on the drill head is / are, wherein the data is transmitted or received along the drill string to or from a communication unit on or in the drill drive which is interfaced with a surface computer

Monitoring of the well bore, which is the data of the

Sensors and / or actuators receives or provides. Furthermore, the

CONFIRMATION COPY Invention drill pipe to build such

Communication system.

Wells for gas, petroleum or geothermal exploration are typically 30 cm in diameter and approximately 2 km / 1, 5 mi in length. These holes are drilled using drill strings made from relatively light, jointed, jointed drill pipes of 9.14m / 30ft or 13.72m / 45ft in length. As the drilling progresses, additional drill string at the upper borehole end is added to the drill string. At the lower drill hole end of the drill string is usually a drill shank, the dead weight of which corresponds to the normal drill string strung together to 300 m /1,000 ft in length. The chisel shaft is equipped with a drill bit. Due to the weight of the assembly and the rotating drive of the drill string from the surface, the drill bit digs into the soil. Sometimes too

Drilling mud motors or drilling mud turbines used for the drill bit drive. Mud or air is supplied from the surface through an axial bore of the drill string of the drill bit. This fluid removes the erosion from the wellbore over the hollow cylindrical space between the outer boom wall and the borehole wall. With a

hydrostatic head, the gases of the soil formation are monitored or sometimes applied a cooling for the drill bit.

A transfer of sensor data via parameters such as pressure or

Temperature by means of sensors on the drill string in the area of

Borehole soil to be detected, to the surface, has long been required. Various methods of this communication were attempted, such as electromagnetic wave propagation through the soil formation, electrical transmission via an insulated conductor, pressure pulse propagation through the drilling mud, and acoustic wave propagation across the metal drill string. Each of these methods has disadvantages such as signal attenuation, ambient noise, high temperatures, and incompatibility with standard operations. The most common method is that of information transfer by means of a pressure pulse over the drilling mud. However, sludge damping mechanisms limit the transmission rate to about 2bit / s to 4bit / s.

Another reason for the transfer of information about the

The drill string results from the desire to automatically maintain a given direction of advance. This is especially important in mining deep drilling with a drill pipe supporting the drill pipe and a rotatably mounted on this and provided with guide rails and Anpressstücken outer tube. Also a drill pipe for full and

Core drilling is affected. In deep drilling in overground and underground mining cause the earth's gravity, the stratification of earth formations,

especially in the transition from hard to soft layers and

vice versa, as well as the external friction of the drilling tool and the rod deviations from the predetermined drilling direction. This is true for both core and full wells. In particular, in underground mining, where often approach and exit point of a hole are specified, the bore must maintain the desired direction. Such holes are also referred to as target holes. But even with exploration wells to explore unknown deposits, a straight course of the hole is required. Digestion wells are carried out both after the core and after the full drilling. Even with parallel holes, such. for the dike attachment, the perpendicularity and parallelism for reasons of later tightness of the dike is imperative.

For the straight course of the bore so-called

Target boring bars, stabilizers or centering and guiding devices installed. These are rods with attached

Guide rails that correspond to the outer diameter of the drill diameter and, following the penetrating drilling tool, this concentrically. Target boring bars have a built-in automatic vertical control that predefines and / or corrects the drilling direction by utilizing the force of gravity and using the pressure of the flushing liquid. For straight holes both after Full and core drilling, even with lengths up to 100 m, direction measurements are required in between to drill the hole

according to the established deviation. This work is extremely time consuming and expensive, especially in very deep holes or in core or full holes after the

Rope core drilling process using two different linkage and machine equipment. To the straightforward

Holes include horizontal, vertical and oblique holes.

There is therefore a great deal of interest in placing corresponding gauges as close as possible to the drill bit and / or drill bit of the drill string in order to provide the correct measurement data on-line and real-time over the drill string surface processing equipment, e.g. to respond to destination deviations immediately. Corresponding measuring devices are, for example, as

Tilt sensors such as inclinometer, deflectometer or pendulum meter. Equally important is the transmission of measured values from sensors of other detection variables, i. other physical quantities.

In the following, the state of the art of devices for transmitting information about drill pipes is appreciated. According to the prior art, depending on the field of application, a variety of types of

Facilities for transmitting information about drill pipes in use.

In the European patent application EP 1 225 301 A1 a 'hollow drill pipe for information transmission' is presented, consisting on the one hand of an electrically conductive hollow rod, which inside a cylindrical stratification of insulation, conduction and insulation, wherein the line depending on the ends of the linkage is exposed to a length L = 0.8 x D to 2.2 x D to form conductive rings and contacted the drilling mud, and on the other hand from a drill string of several rods and a drill at the lower end, wherein for the transmission of information a first inner axial coil assembly 1 at the lower end, which is suitable for electrically changing signals as information carrier and a second inner axial coil assembly 2 on the upper linkage for signal reception, the signals being generated by the circulation of a current in a current loop passing through the conductive layer, the conductive rings, the inner mud, the skirted garments and the outer Is formed, and wherein the current is generated by the signal acting on the coil assembly 1. Since the diameter D is between 2.5 cm and 11 cm, it is an extremely long and thin line, both in the mechanical and in the electrical sense.

The European patent application EP 1 213 440 A1 provides a 'method for transmitting information about a drill pipe' and a

Device for this, with each rod of the drill pipe a coaxial, electrically conductive inner pipe for the carriage of the under pressure

surrounded by an annular space filled with a fluid electrical insulator and an outwardly terminating, electrically conductive wall, wherein a first coil arrangement for inductive coupling in the vicinity of the closing, lower end of the drill string is located in the annulus , the inner line enclosing, and a second coil for inductive decoupling in the vicinity of the upper end of the linkage in the same arrangement. Furthermore, located near the drill near a battery-powered sensor whose signal is amplitude-processed and frequency-processed fed to the first coil, transmitted and received by the second coil and processed. Furthermore, the coils are reversible usable as transmitting and receiving coils. In addition, a further transmitting coil in the vicinity of the coil 2 and a further receiving coil in the vicinity of coil 1 is provided. The arrangement represents electrically a coaxial line, consisting of an inner conductor, a cylindrical insulating layer and an outer conductor. The quality of the transmission is material, medium, speed, length, amplitude and frequency dependent.

European Patent Application EP 468 891 A1 discloses a force measurement arrangement for a drill pipe with a device for

Radio transmission ', which is firmly connected to a rotatable shaft A sensor and a first electronic circuit for the preparation of the signals provided by the sensors, wherein the signals are conducted to a stationary detection unit, which is remote from a fixed mounted on the rotary shaft radio transmitter and the apparatus also has a radio receiver for the reception of of the

Detection unit has transmitted signals and that the radio receiver has means for parameterizing or for regulating the measuring device in response to the signals sent by the detection unit. The sensors of the force measuring device are installed over days, as well as the radio link, so that remains as a technical feature of the rotating radio source and the stationary sink.

International patent application WO 91 00 413 A1 concerning a

'Device for force measurement for a drill pipe' has the content that the radio link described in EP 468 891 A1 is replaced with a similar sensor assembly for the force measurement of the drill shaft by a co-rotating with the drill string collector with a fixed brush tap. Upstream and downstream electronic circuits are used for the preparation and preparation of measured values. Since the force measurement does not take place at the scene, i. E. at the drill head or in its immediate vicinity, that is

Result of the measurement in any case to adjust the actual conditions and rework.

European Patent Application EP 1 915 504 A1 discloses a 'Bidirectional Drilling and Borehole Measurement and Drilling Control System' comprising a drilling rig with a derrick and a hook and pivot for the drill string, a rig

Mitnehmerstange, a pump for the drilling fluid, which is conveyed from a pit via the rotary joint in the interior of the hollow cylindrical drill pipe and pushed over the drill bit emerging between Bohrstrang- outer wall and hole as drilling mud, with an electronics equipment below the pivot, the wirelessly communicates on the one hand with the construction site control and control computer and on the other hand with the surface participant of the drill string, the one forming a drill pipe interconnect, wherein the linkages are wired along their length (Wired Drill Pipe (WDP)) and each have at their respective end an inductive coupling to a next linkage, depending on the length of the drill string

intermediate amplifiers, and an array of bottom hole assembly (BHA) control and measuring devices, such as a motor controller, various logging while drilling (LWD) and measurement while drilling (MWD) modules leading to the wired drill string with an interface subscriber. The wired, inductively coupled linkages extending from the surface to the interface subscriber form the drill string telemetry system.

In an earlier patent application US 7 040 415 two more

Introduced telemetry systems with their methodology, the drill string data on the drilling platform once tapped via slip rings and the

Construction site computers are transmitted and in another example by means of a wireless transmission. The linkages are each equipped with two cable pairs, with the adapter connected between the linkages providing an inductive coupling between the two pairs of lines.

According to the European patent EP 1 556 576 B1, 'internally coated electrical track drill pipes' are interconnected

Screw-connectable hollow cylindrical drill pipe electrically insulating coated on the inner peripheral surface to then experience an electrically conductive coating on the cylindrical insulating surface. The process is continued with a further insulating layer on the conductive layer and a further conductive layer on the last applied insulating layer, so that are located under a hollow cylindrical insulator to the pipe inner wall of the linkage two electrical hollow cylindrical conductors. Another measure is taken at the transition point of two drill pipes such that outwardly electrically insulated and fluid-sealed, internally provided with electrical conductors connector the isolated electrical path of each such linkage with the isolated electrical path of the corresponding adjacent linkage electrically connects. This is also done over the electrically conductive hohizylindrförmigen layers across multi-layered, so that at least one isolated

continuous electrical path from an upper end of the drill string to a lower end of the drill string. The considerable vibrations and forces occurring at the bolted transition points of the linkage, require in the connectors an uninterruptible electrical, which can hardly be achieved.

European patent application EP 1 434 063 A2 'Method and system for measuring signal monitoring for drill pipes' discloses

Telemetry system and a telemetry method to communicate information along a drill string. The information of a sensor in the drill bit is modulated with the aid of a transmitter and a transmitter coil on a carrier signal and transmitted from a first position via the drill string medium to high frequency to a second position, received and demodulated by a receiver and a receiver coil and in

Processor further processed. With the arrangement should be technical

Drilling information can be captured directly affecting the quality of the bore and the life of the drill head device by knowing the current temperature of the engine mounts and the current

Extend the speed of the motor drive shaft.

Object of the present invention is to provide a novel device for

Provide information about a drill string, which overcomes the disadvantages of the prior art and ensures secure transmission of information within the drill string.

This object is solved by the features of independent claims 1, 9 and 10. Advantageous developments of the invention are formulated in the respective subclaims.

According to the invention, a communication system for transmitting information about drill string of a drill string for earth bores proposed, comprising a first drill pipe, one or more second drill pipe and a drill drive, wherein the first drill pipe and the second (s) drill pipe each consist of a hollow cylindrical drill pipe with at least one axially extending pipe and having an upper end and a lower end is / are formed, the lower end of the first drill pipe a receptacle for a

Drill drive is rotatably connected, wherein the communication system further comprises:

a sensor system and / or actuator system, to which the measurement, parameterization, status and / or control data are to be transmitted and which are / are arranged at the lower end of the first drill string and / or on the drill head,

a first communication unit and a drive-side electronics, both of which are arranged on or in the drill drive and connected to one another,

a surface computer for monitoring the borehole, which communicates with the drive-side electronics and receives or provides the data of the sensors and / or actuators;

- Other communication units, of which at least one of the

upper end of the first drill string and at least one at the two ends of the second or the second drill string (s) are arranged,

- At least one electronics with a microcontroller each in the

Drill pipe, and

at least one power supply for the communication units and the electronics respectively in the drill pipes,

wherein the sensor and / or actuator and the communication unit of the first drill string via the electrical line with each other

are connected and the electronics of the first drill string data technology between the sensors and / or actuators and the communication unit of the first drill string, and the communication units of each second drill pipe are connected to each other via the electrical line, wherein the electronics of the respective second drill string data-technically lies between the communication units,

and wherein the communication units are radio modules, and each of the communication units is configured to transmit and / or receive the data to the immediately adjacent communication unit of the next drill string or auger drive.

The basic idea of the present invention is a

Provide data transmission along a drill string for wells such that within each drill string of the drill string, a wired transmission of the data occurs, and the transmission takes place wirelessly at the junctions of the drill string. For the

Wired transmission will be a wiring within the

Drill (WDP) used, whereas the respective ends of the drill string mutually facing radio transmission modules are arranged, which bridge only the connection distance between each other. This will be a reliable, trouble-free and effective

Data transmission along the drill string achieved by means of which

Borehole data can be collected in real time (real-time) and during drilling operations (on-line) and transmitted to the surface computer without the ground formation or other environmental conditions at the borehole affecting the quality of the data transmission.

The communication system according to the invention is versatile and offers an on-line and real-time measured value transmission path for

Drill string data, drill head data and / or Bohrkronendaten, wherein the sensors for detecting the measurement data as close as possible in the immediate vicinity of the drill head and / or the drill bit, preferably even on the drill head and / or the drill bit. Hereinafter, the term drill bit is understood to mean that part of the borehole bottom end of a drill string which has the cutting elements digging into the ground, while boring head comprises the overall arrangement at the lower end of the drill string first drill pipe comprising a drill head, auger or drill bit and corresponding connection means to the drill pipe.

In other applications, e.g. at long lengths of the drill string, sensors and / or actuators in addition to the arrangement on

Drilling head also in or on at least one other drill pipe

may be mounted to receive information from various positions along the drillstring, i. Receive sensor measurement and / or status data or parameterization and / or control data to sensors or

Transfer actuators, which are located in different locations of the drill string. Important sensors are pressure or temperature sensors. Actuators can be valves, motors or pumps.

The communication system is simple and maintenance-free, and the installation and commissioning of technically trained personnel on site possible. It can be used in many ways, especially in areas of

Drilling technology for deep engineering, such as mud drilling, pile drilling and in-situ soil mixing technology with the three applications Deep Soil Mixing (DSM), Shallow Soil Mixing (SSM) and Backhoe Stabilization ( BOSS).

The in-situ Soil Mixing process is characterized by the fact that the goal is soil compaction and soil stabilization, in which the soil is loosened by drilling or milling, during the drilling or milling

Milling draft already introduced an application-specific suspension, added at the high gear in addition to the suspension cement and mixed with the soil / soil and optionally subsequently solidified with iron piles. The usual support structure and excavated soil deleted. Depths of up to 55m are processed, with the correct

Parallelism and perpendicularity of the holes is of utmost importance to obtain a homogeneous soil consolidation.

The same applies to the dike sealing and dyke consolidation, since non-parallelism and lack of verticals in the introduction not fundamental Gaps occur that can be flushed or rinsed out by the water, causing the dike to be hollowed out or undermined. In contrast to the above geophysical holes or the rinsing and

Pile drilling does not incur drilled holes as part of "in-situ soil mixing" technology, especially for perpendicular measurement, but the measurement of perpendiculars during on-line and real-time propulsion is imperative.

For soil mixing, a twin-auger or double-auger drive is used with two counter-rotating tools, which ensure the best possible mixing of the soil / soil. One

Internal high-pressure linkage with a continuous cross-section from the flushing head to the mixing tool ensures application-oriented, low-maintenance use at working pressures of up to 10 MPa / 100 bar. One

mechanically adjustable guide carriage allows the change of the center distance of the drive motors of 500 mm ... 1100 mm, whereby the production of resolved, tangent or overcut

Mixed piles is possible. The speed and torque are controlled by an electrically switchable two-speed valve installed in the engine hydraulics.

According to the invention, it is proposed to wire the individual drill rods in the axial direction in one or more pairs (WDP) so that there is at least one electrical line between the two ends of a drill pipe which can be used for data transmission from one end to the other. The electrical line can einliegen in a relatively thin tube, which extends at least partially on the hollow drill pipe in the manner of a cable channel, preferably on the inside, axially parallel to this. By using an electric wire for the

Data transfer from one drill pipe end to the other

Drill end is the quality of data transfer regardless of the length of the drill string. The power supply is preferably formed of batteries so that it is self-sufficient and no external supply of a current for the

Communication units is necessary. Furthermore, it is advantageous to perform the power supply switchable, so that in cases where no data transfer via a drill pipe is necessary, for example, during its storage at a storage location or a longer suspension of the hole, a shutdown of the power supply for the electronics and the communication units is reached. This saves battery capacity and extends the useful life of the power supply.

Preferably, the power supply and / or the electronics can be arranged approximately in the axial tube center of a drill pipe. This causes the same cable length to be present in both directions, so that attenuation effects or other parasitic effects in data transmission and power supply in both directions of transmission are symmetrical.

At the ends of the drill string is at least one of the

Power supplied, radio-controlled communication unit provided, which are designed either as a transmitter (transmitter) or as a receiver (receiver) or as a combined transceiver unit (transceiver). Such transmitters, receivers and combined

Transceiver unit are commercially available and will not be further described below. If only one unidirectional data transmission is required, the use of transmitters and receivers as data modules is sufficient, wherein at one end a drill string is arranged a transmitter and at the other end a corresponding receiver and the

Drill rods are mounted to each other so that at the

Junction a transmitter of a drill string opposite a receiver of the other drill string. A bidirectional

Communication is achieved when a transmitter and a receiver are placed at each end of a drill pipe. This can be in separate Communication units take place or alternatively in the mentioned

combined transceiver.

The communication units are therefore arranged according to the invention so that in unidirectional transmission direction from the borehole bottom to

Surface, e.g. in the case of measurement data transmission, at the upper end of the nth linkage, a transmitter and at the lower end of the subsequent (n + 1) - th linkage, a receiver is located. For the reverse

Unidirectional operation from the surface to the bottom of the borehole can be provided that at the lower end of the (n + 1) -th linkage a transmitter and at the upper end of the subsequent n-th linkage a receiver is arranged. The radio equipment of the linkage in bidirectional

Radio communication can then be simplified with combined

Transmitter / receiver units (transceivers) done. This has the advantage that no type distinction of the drill string and no

Directional orientation of the same is necessary.

The electronics within a drill string controls the data transmission from one communication unit to the other communication unit or to the sensor / actuator system. It can serve as an amplifier and signal conditioner for the data to be transmitted. The electronics contains a microcontroller for this purpose.

In an advantageous embodiment, each linkage has one

Inclination sensor to detect the state of the respective

Drill pipe on. Thus, it can be determined by means of the inclination sensor, whether the corresponding drill string is in a horizontal position, for example, at the storage location, or in a vertical position, for example in the case of its use. As a tilt sensor, for example, a simple mercury switch, alternatively a gyrosensor or one or more acceleration sensors can be used. The inclination sensor can also be arranged approximately at the axial center of a drill pipe. The tilt sensor can be used as a switch for power supply. For this purpose, it is preferably connected to the power supply and configured to supply the power to the electronics and to the communication unit (s) at a transition of the drill string from a horizontal attitude condition to a vertical attitude condition

turn on and turn off at a transition of the drill string from a vertical position state to a horizontal position state. This means that at about horizontal position of the linkage, such as e.g. in a storage space or during transport, the power supply is switched off or is, and in about vertical operation or when leaving the horizontal position, the rest status of the power supply for the

Microcontroller and the wireless modules turns on.

For horizontal drilling or oblique drilling suitable

Compensation measures, such as Magnetic switch can be provided in each drill pipe to turn on the power supply despite substantially horizontal positional state of the corresponding drill string and to activate the electronics, or to change the logic of the tilt switch.

Preferably, the power supply can be rechargeable. For this purpose, the batteries may be formed by rechargeable batteries. In the case of a permanently installed power supply, charging can basically take place in the

Drill rod mounted state, the drill pipe is connected together with its mounted power supply via charging cable to a charging station. Taking into account the dimensions and weight of a drill string and the use of a construction site, however, it is advantageous, the power supply removable on or in

To provide drill pipe, in particular to perform pluggable. In this way, it can be easily and quickly removed from the drill pipe to load or reload. Also a unloading in order to

Regeneration is possible. After the loading process, the

Power supply then back to the appropriate recording on

Stem ear are infected. For this purpose, the recording electrical Plug contacts, via which the power supply to the electronics and / or with the communication units is connectable or is connected.

The charging process may be carried out at a local stationary charging station or with a mobile charging device operating on the basis of a wireless energy transfer method known in the art, e.g. 'Wireless energy transfer by means of closely coupled magnetic

Resonances 'or' backchannel messaging using

Receiving antenna impedance modulation '.

According to another embodiment, additionally or alternatively to the charging of the power supply to a charging station, the drill pipe may have means for automatically recharging the power supply during operation of the drill pipe. A removal of the

Energy supply for the purpose of charging can be largely avoided. Such a means may for example be a turbine which drives an electric generator and from which into the interior of the

Drill pipe pressurized introduced medium, e.g. Rinse water, a suspension or cement, or is driven by the mud flowing outside between the drill pipe and borehole wall to the earth's surface. An alternative means is a Seebeck element which generates a voltage from a temperature difference between the medium introduced into the drill string and the drilling mud which can be used to charge the power supply.

The energy supply preferably has at least one optical and / or acoustic means for displaying the state of charge, the remaining capacity and / or the supply duration still available. Such a charge status indicator serves the charge control. In this case, both the actual state of charge can be displayed, as well as a prediction of the capacity state of the rechargeable storing

Power supply. The drill pipe of each drill string can have at least one

Recess for protected recording of the power supply, the

Have electronics and / or one of the communication units. In this recess, the recorded power supply, electronics and / or communication units of the surrounding the drill pipe media is isolated. The recess may be provided on the outside of the drill pipe, in which case it is formed by a steel bag.

Alternatively, the recess may extend into the interior of the drill pipe, so that no projecting parts are present on its lateral surface. The exact arrangement of the recess over the

Linkage length can be adapted to the accessibility.

In the recess are then plug contacts for electrical

Plug contacting the power supply, the electronics and / or one of the communication units. Also, sensors and / or actuators can be or are connected to the power supply and / or the electronics via the plug contacts.

If a communication unit is inserted in a recess of the drill pipe, it is protected by the drill pipe, respectively by the wall delimiting the recess. Alternatively, a

Communication unit of a drill string but also have a robust, especially metallic housing, with which they outside the

Drill pipe is mounted. The communication unit is thus more accessible.

According to an advantageous embodiment, the housing has a

Communication unit one by a non-metallic material,

For example, plastic or ceramic, closed opening, which is directed towards the outer edge of the end, where the

corresponding communication unit is arranged. This has the advantage that the communication unit is protected on the one hand from the materials in the borehole, on the other hand, a largely unhindered reception and / or largely unhindered emission of radio signals through the Opening is possible through. An antenna of the radio module for emitting and / or receiving radio signals is located directly at or even in the opening. By contrast, a completely metallic housing would prevent the reception and emission of radio signals.

If a communication unit rests in a recess of the drill pipe of a drill pipe, this can also be a by a

non-metallic material, such as plastic or ceramic, have closed opening, which is directed towards the outer edge of the end on which the corresponding communication unit is arranged.

Preferably, the power supply and the electronics structurally form one unit. The electronics can thus be made compact and does not need to be cabled separately to the power supply. The handling of the drill pipe facilitates thereby and the effort for the

Preparation of the drill pipe is reduced.

Furthermore, a drill string for each communication unit may have electronics, wherein the communication unit and the electronics can each structurally form a unit. Similarly, a drill pipe for each communication unit may have a power supply, wherein communication unit and power supply structurally form a unit.

This also simplifies handling, reduces the number of components and thereby facilitates the assembly of the drill pipe. In a particularly preferred embodiment, a communication unit, an electronics and a power supply together form a structural unit, so that apart from the drill pipe receiving drill pipe at each drill string only two components to be arranged and connect via the electrical line.

The first drill pipe forms a first end of the drill string and has near the drill head, the sensors for the measured and

Surface to be transferred measured values and parameters. It is from one a hollow cylindrical drill pipe having an upper end and a lower end, with at least one lying between the upper and the lower end electrical line which is guided to the two ends, wherein the lower end has a receptacle for a drill head and the upper end is rotatably connected to the lower end of another drill string or with a drill drive, wherein a sensor and / or actuators, from which or to the data are transferable, is arranged at the lower end / are, a communication unit at the upper end

is arranged, at least one electronics with a microcontroller, and at least one power supply for the communication units and the electronics are present, wherein the communication unit and the

Sensors and / or actuators are connected to each other via the electrical line and the electronics data technology between the sensors and / or actuators and the communication unit is located, and the

Communication unit is a radio module, wherein the communication unit is adapted to data to an immediately adjacent

Communication device of the next drill string or the drill drive to transmit and / or receive data from this. The sensor system is thus connected to the electronics of the first drill string via the single or multi-pair electrical line and transmits the measured values as electrical signals analog or digital via this line.

At the upper end of the first drill string opposite the lower end there is a radio module

Communication unit that forms a transmitter or a combined transmitter / receiver unit (transceiver). Also, the first drill string can in its axial center a rechargeable storing

Have power supply and a tilt sensor as a power switch for the electronics and the radio module. The first drill pipe

differs from the second or the second drill rods in the sensor and / or actuators, which are in Bohrkopfnähe instead of

Communication unit is arranged. The second or each second drill pipe forms a

An intermediate drill pipe which is mounted between the first drill pipe comprising the drill head and the drill drive. For this purpose, it is positioned on the surface side opposite the first end of the drill string and mounted on the first drill string and the drive. It forms a drill pipe for a drill string for earth bores for the construction of the communication system according to the invention, with a

hollow cylindrical drill pipe having an upper end and a lower end, and having at least one lying between the upper and the lower end electrical line which is guided to the two ends, wherein the lower end with the upper end of another drill string rotatably connected and the upper end with the lower end of another drill string or with a drill drive rotatably connected, wherein at both ends at least one

Communication unit arranged, at least one electronics with a microcontroller, and at least one power supply for the

Communication units and the electronics are present, wherein the communication units are connected to each other via the electrical line and the electronic data technology between the

Communication units, and the communication units

Radio modules are where each of the communication units is adapted to transmit data to and / or receive data from an immediately adjacent communication device of the next drill string or auger drive.

According to one embodiment variant, the or a second drill pipe has a receiver (receiver) or a combined transmitter / receiver unit (transceiver) at its lower end, relative to its vertical arrangement, a likewise one or more paired electrical line via the linkage, and as an example in the axial center of a

rechargeable storing power supply and a tilt sensor as a switch for the electronics and the radio modules. At the upper end relative to its vertical arrangement, the second drill string has at least one radio transmitter or a combined transmitter / transmitter. Receiver unit (transceiver) for bidirectional data transmission, wherein the transmitter or transceiver over a radio link with the communication unit of the drill drive, connected to the latter

The electronics as well as the surface computer connected to the electronics of the drilling site is in data connection and primarily transmits the sensor data from the drill head environment unidirectionally.

If actuators are also to be activated along the drill string within the borehole, the communication system according to the invention must be bidirectional, so that control data can be transmitted to the actuators. As a result, sensors can also be configured dynamically, with

Parameter data can be transmitted to the sensors.

The drill string or the communication system consisting of wired drill rods and radio links at the linkage connections comprises only two different ones according to the previous explanation

Basic drill pipe types, namely the first drill pipe, the one

Bohrkopfgestänge forms, and the second and the second drill pipe, the Zwischenbohrgestänge form. The first drill pipe is characterized by its inclusion of the drill head, a sensor and / or actuators near the drill head and a radio module at one end, whereas the second or each second drill pipe has at least one radio module at each end.

In a further advantageous embodiment of the communication system, sensors and / or actuators are also used in other linkages of the drill string. These linkages provide additional information from these sensors or additionally receive information for their actuators. With the additional information more or more robust information of the total drill string can be determined or determined.

As described above, a basic idea of the communication system according to the invention is that the radio link between the drill pipes invariably only over the relatively short distance, ie takes place over the length of a linkage connection from an n-th linkage to a (n + 1) -th linkage. The radio link therefore does not exist over the entire length of one or more drill pipes. This means that the borehole environment, in particular the nature of the soil formation or the use of drilling mud or suspension or cement for soil stabilization, which in the above presented

Drilling procedures are crucial to the quality of messaging

can affect, in the inventive

Communication system with wireless data transmission is without significant influence.

The radio modules can be set to constant field sizes and field parameters. Regarding this setting there is no

Difference characteristics related to the boom types.

Due to the mechanical conditions at the Bohrgestängeenden, in particular with regard to there existing connection means such

Screw caps, the communication units are preferably each at a distance of 15 cm to 20 cm from the outer edge of a

To mount rod end, which results in a

Radio range of only 30 cm to 40 cm is present. The

Communication units can therefore be set up for near field communication in such a way that their transmitter ranges are less than 1 m, in particular only between 30 and 50 cm. This advantageous embodiment leads to calculable transmission powers between the radio modules, which also allows calculability of the energy balance of the rechargeable storing power supplies.

The use of a drill string formed from such drill string can be planned regardless of the environmental conditions. In the

Working with such poles are about the application of

No need for special knowledge and no special restrictions on message transmission / radio engineering by the drill site personnel. In a further advantageous embodiment of the invention, it is proposed to assign each drill pipe a unique identifier, over which it is identifiable. This allows for a simplification of logistics in the management of the drill pipe. On the other hand, the identifier offers the possibility of being networked or linked to any type of data technology

uniquely identify and address networked drill string in a network. According to the invention, therefore, each drill string forms a node in an ad-hoc network, which at the well from the individual

Drill rods is built. In terms of data technology, in this case the electronics together with the communication unit or units connected to it form a network node.

An ad-hoc network is a simple wireless local area network (WLAN) networking variant that enables direct peer-to-peer communication without an access point (base station) as an information broker, and works well for small and / or time-limited networks. The

Communication units of the communication system can therefore be set up to transmit the data via WLAN. In ad-hoc

Operating state, the wireless network nodes communicate directly with each other without a central wireless LAN access point to easily exchange data or folders. Ad hoc networks work on the basis of the beaconing mechanism (beacon mechanism), in which everyone

Network node (Node) at regular intervals a beacon (radio signal) sends. Each knot knows its neighbors, which it can reach directly. All nodes use the same frequency when transmitting. The entire network structure arises dynamically through self-organization and

Self-administration, network management is distributed among the nodes. There is no central office that controls the network structure and routing, i. determines the route allocation. In each network node, the tables for the route allocation are stored. Each node has a router share

(Routing portion). Due to the mobility of the nodes, the network structure is time-variant. Entry into an ad-hoc network takes place through interaction with other participants. The radio nodes work in an ad-hoc state and are configured according to the international standard IEEE 802.11 ad-hoc. In order for all nodes to be able to communicate with each other, the channel number and the service set identifier (SSID) to be set of each node must be identical. Data, information or signals are passed from network node to network node until they reach their receiver, thus distributing the data load more advantageously than in centralized access networks. With route allocation procedures, the ad hoc network constantly adapts as network nodes move, join or fail. If a network node fails, the network tries to reach the destination node, bypassing the failed node.

The identifier can be stored, for example, in the electronics and / or in one or more of the communication units and by the

drive-side communication unit are queried as soon as

Drill pipe is mounted to the drill drive and the

Communication unit of the drill drive with the top of the

Drill rod arranged communication unit enters radio communication. This presupposes that at least the radio link, preferably also the electronics of the drill pipe, is already supplied by the power supply at least with a quiescent current, i. the power supply is turned on. This can be done automatically via the aforementioned tilt sensor.

The triggering of the identification query can be automatic,

for example, via a mechanical switch on the drill drive, which is actuated during assembly of the drill pipe. Alternatively, the drill drive may have a proximity sensor that triggers and initiates the ID query as soon as a drill string enters its detection area. In a preferred embodiment, each drill pipe has an RFID transponder, in particular a passive RFI D transponder, in which the aforementioned or another unique identifier is stored. Of the Drill drive can then have a proximity sensor with an RFID reading unit, which is connected to the drive-side electronics and is adapted to activate the approach of a drill pipe whose RFID transponder for the transmission of the identifier.

The identifier obtained from the RFID reading unit or from the drive-side radio module can then be fed to the electronics of the drill head and from there to the surface computer, which inserts the identifier (ID) of the 'new' linkage into the ad hoc network.

If an existing Bohrstrang another drill pipe of the type described above is added from a storage location is

Change position of the drill pipe from horizontal to vertical position. The tilt sensor will switch on the power supply and activate the electronics and the communication units, which were previously in a sleep state.

Alternatively, the RFI D transponder may be an active RFI D transponder connected to the power supply and configured to turn on the power supply and / or the electronics and

Activate communication units when receiving an activation signal receives from the RFID reader unit. The corresponding pipe string then goes from the idle state to an activated state.

Relative to the respective drill pipe is inventively

proposed to distinguish three operating states:

a first operating state (REST mode) in which the drill pipes are stored as stacked goods in a storage location in a horizontal position,

- A second operating state (READY mode), in which the linkage pass when they are removed from the stack, transported and erected vertically, and

a third operating state (SET mode) into which the drill pipes pass when between the existing drill string and the drill string

Be mounted driving rod of the drill drive. In REST mode, serviced and prepared drill pipes, each equipped with at least one energy supply, are stored horizontally on demand as stacked goods at a storage location close to the construction site. The wired linkages (WDP) are equipped with radio modules, the electronics are also housed in the linkage, but is in the off state, ie in the so-called 'NuH' current status (Zero Current Mode).

To enter the READY mode, a prepared boom is removed from the stack, transported to the nearby well site and erected. The tilt switch, which is also supplied with quiescent current in REST mode, switches on the power supply for the electronics when the linkage is moved from the horizontal to the vertical position. Both the horizontal and the vertical position can be defined with a tolerance field in the electronics so that the oblique drilling in the context of

Switching action of the tilt sensor is possible. The switching causes an unlocking of the electronics in the sense of activating a logic and the flow of a minimum quiescent current into the electronics. The

Linkage electronics are electrically in a rest state, which can also be referred to as sleep mode, in which it is in a waiting position.

In the SET mode, the prepared 'new' linkage, which is in the quiescent state, is transported to the uppermost linkage of the drill string, which has since been freed from the drill drive, and fitted with its lower end and mechanically bolted to it. Thereafter, the drive rod of the drill drive of the drilling device to the upper end of the 'new'

Linkage set and also mechanically screwed with this. In this case, the arranged in the head of the Mitnehmerstange proximity sensor is activated, which causes its RFI D reader, the identifier (ID) of the opposite RFID transponder at the top of the 'new'

Interrogate linkage. By means of this procedure and to the knowledge of the identification of the new linkage and master data, these are transmitted from the drive-side electronics to the surface computer. This can be done via a wireless connection. The surface computer in turn performs a synchronization of all data in such a way that the new

Linkage forms a new node within the drill string ad hoc network. With this illustrated procedure are drill pipe

fully automatic and self-organized and the ad-hoc to be set up

Network registered and integrated there, so that each drill pipe within the network forms an individually addressable network node.

The object of the invention will be described below with reference to concrete

Embodiments and the accompanying drawings described in more detail. Show it:

Fig. 1: Stack of prepared drill string, REST mode

Fig. 2: remove linkage from the stack, erect, transport,

READY mode

Fig. 3: Mount linkage between drill string and drive rod,

Mode SET

Fig. 4: operating principle of the drill string / linkage overall arrangement

Fig. 5: Drill pipe as a node in the drill string ad hoc network.

The same and equivalent components of the embodiments are each provided with the same reference numerals in the figures.

1 shows a stack 1 of prepared drill pipe 10 in REST mode for a drill string. The individual drill pipe 10 consist of a

Drill pipe 11 with the wall thickness 2, have an upper end 13 and a lower end 14, and are in the axial direction one or more pairs wired (WDP), so that two electrical lines 21, 22 are formed.

Drill pipe 10 have in the axial center of the tube electronics 15 with a microcontroller and a switchable electrical power supply, the at least a pair of the two paired lines 21, 22 are powered, the electronics 15 and the power supply structurally form a unit. At its ends 13, 14, a drill string is in each case equipped with a radio-controlled, commercially available transmitter (transmitter) and / or receiver (receiver) or transmitter / receiver unit (transceiver) 17, 19, each having an antenna 8, 20, and which are also powered by the aforementioned power supply.

The power supply is rechargeable and fixed or portable. The removal of the pluggable power supply is used for charging and / or recharging the same and is added to the charging receptacle of the linkage after the loading process again. The accommodation of the power supply is protected in steel pockets of the linkage, with electrical connections to sensors, actuators, transmitters and / or receivers in the pockets. Approximately in the center of the tube is a tilt sensor 6, which switches the power supply depending position. The inclination sensor 16 is rested even in a horizontal position.

The drill pipe 10 prepared for the drilling or milling process are available on the stack 1 in REST mode. From the perspective of

Information processing forms each drill pipe 10 with

microcontroller controlled electronics 15 and radio modules 17, 19 a node of a network.

FIG. 2 shows, on the right, the drill pipe storage site 1, at which the drill pipes 10 are stacked horizontally. On call, a linkage 3 is removed from the stack 1 and erected. The tilt sensor 16 switches the

Energy supply and so supplies the electronics 15 and the radio modules 17,19 with quiescent current. The linkage state thereby enters the READY mode. The linkage 4 is transported to the drilling site. Of the

Inclination sensor 16 thus serves as a switch for the power supply of the electronics 15 and the radio modules 7, 9, wherein at approximately horizontal position of the linkage 10, the power supply is turned off and at about vertical operation or even when leaving the horizontal position the rest status of the power supply for the electronics 15 and the

Radio modules 17, 9 is turned on.

According to FIG. 3, a further working step follows in which the (n + 1) -th linkage 6 removed from the stack 1 is mounted between the uppermost n-th linkage 5 of the drill string and the clamping jaw 70 of a drill drive 7. In SET mode, the prepared 'new' (n + 1) -ste linkage 6, which is at rest, is transported to the uppermost, n-th linkage 5 of the drill string, now freed of clamping jaw 70 and drive rod 74, and its first placed lower end 14 and mechanically screwed to the upper end 13. In the following, the driving rod 74 of the drive 7 of the drilling device is placed on the second upper end 13 of the 'new' linkage 6 and screwed on the clamping jaw 70 also with this mechanically fixed.

In a further advantageous embodiment, when placing the

Mitnehmerstange 74 of the drive 7 on the second upper end 13 of the 'new' linkage 6 in the head of Mitnehmerstange 74 a proximity sensor 71 is activated, which causes a high-frequency identification (RFID) reader via a transceiver unit (transceiver) 72, to interrogate the identifier (ID) of the transmitter / receiver unit (transceiver) 17 of the second upper end 13 of the linkage 6 opposite to it. By means of this

Procedure is the identifier of the arranged in the drill drive 7 electronics 73, which also has a microcontroller to the in direct

Radio communication with the drive 7 stationary surface computer 100 is sent, which in turn performs a synchronization of all data such that the new linkage 6 forms a new node within the drill string ad hoc network.

Fig. 4 shows the operating principle of the drill string-linkage overall arrangement. On the right side the storage site 1 for ready-made drill pipe 10 in the mode REST is shown, while the left side linkage 5, 6, 8, 9 of a drill string from the bottom of the hole to the surface 75, with drive 7 and surface computer 00 shows. The linkage 5, 6, 9, 10 are here as Standard linkage shown, the linkage 8 is the first linkage of the drill string and is located at the bottom of the borehole. The drill string 8, 80 has a receptacle for a drill head and in the vicinity of a sensor 81 with various measuring devices, in particular sensors, such as inclinometer, deflectometer, Pendellotmeter or inclination sensor for vertical drilling, and optionally one or more actuators 81st

The linkage head ends 13, 14 are each provided with a radio-controlled commercial transmitter and / or receivers or transceivers 17, 19, which are fed via the rechargeable storage power supply and thus arranged in that in unidirectional transmission direction of

Borehole bottom to the surface 75 at the upper end 13 of the n-th linkage 5 a transmitter 17 and at the lower end 14 of the subsequent (n + 1) -th linkage 6, a receiver 19 is located. For unidirectional operation then applies to the transmission direction of the surface 75 to the borehole bottom, that at the lower end 14 of the (n + 1) -th linkage 6 a transmitter 19 and at the upper end 13 of the subsequent n-th linkage a receiver 17th located. If the establishment of the data transmission takes place only in one

unidirectional direction, the linkage 10 at the upper end 13 and lower end 14 have no equal equipment and are directionally stored. If the linkage 10 is designed for bidirectional data transmission and equipped at the ends with combined transmitter / receiver units (transceivers) 17,19, eliminates the position-appropriate

Direction orientation.

The data transmission takes place unidirectionally or bidirectionally, starting for example at the sensor devices 81 of the drill string 80, is always performed on all WDP rods 10 via the wiring from one end 14 of the linkage to the other end 13 and the drill pipe connections, which usually are designed as screw connections, via at least one transmitter (transmitter) and / or receiver (receiver) or combined transmitter / receiver unit (transceiver) 17, 19 from a drill string to safely transfer the next drill pipe over a very short distance. There are no negative effects on the quality of the wireless transmission. The wireless communication is limited to the transmission from one end 13 of a linkage n to the end 14 of the adjacent linkage n + 1 to about 30 cm to 40 cm with always the same arrangement and always the same environment.

Electronics 15 and radio modules 17,19 of a drill pipe 10 are

Part of an ad hoc network. The drive 7 is also equipped with an electronics 73 with microcontroller and a radio module 72 as a second, upper end of the drill string and exchanges information with the adjacent, with the Bohr- / Fräsfortschritt changing (n + t) -th

Drill pipe 6 off. The communication between the drill drive 7 and the surface computer 100, 101 via a radio link, the line 102, a radio module 103 with antenna 104, with the

Surface computer 100, 101 permanently connects. The surface computer 100, 101 is responsible for the entire site organization and management, as well as the drill string data acquisition and evaluation, and the boom management and network organization.

Fig. 5 shows the drill pipe 10 as a node in the drill string ad hoc network using the example of a drill string with three drill pipes 5, 6, 8. Die

Drilling information acquired from the measurement data of the sensor 81 of the linkage 8 during operation is supplied via the drill string line 21 to the transmitter (transmitter) 17 of the lowest drill string 80 (n-1) and transmitted to the receiver (receiver) 19 of the overlying drill pipe 5 (n), and further to the upper linkage 6 (n + 1) and via which the radio module 72 and the electronics 73 in the drive 7 to the surface computer 100, 101st All participants in this information chain are nodes in the drill string ad hoc network, which consists of the permanent

Participants "surface computer 100" and "drive 7" consists and the changing participants "drill pipe" 8, 5, 6, which according to the method described above in the self-learning and management process nodes of the Ad hoc network. The drill string network management is also a software component of the surface computer.

The communication system according to the invention has a

Communication performance in terms of data rate and data quality, the

regardless of the hole depth. An application is possible even in the most difficult ground conditions and in the water. In addition, communication works equally well for 1000m deep wells at 10m depth.

LIST OF REFERENCE NUMBERS

I drill pipe, stacked, mode REST

3 drill pipe, removed, erect, mode READY

4 drill pipe, transported, mode READY

5 drill pipe n, node n

6 drill string n + 1, mode SET, node n + 1

7 Drilling drive with receptacle

8 drill pipe, knots

9 drill pipe n-1, node n-

10 drill pipes, made-to-measure (WDP)

I I drill pipe

12 wall thickness

13 Upper end

14 Lower end

15 electronics and power supply, node

16 tilt sensor

17 upper communication unit

18 radio antenna 1

19 lower communication unit

0 radio antenna 2

1, 22 electrical line, single / multiple pair

0 clamping jaw

1 proximity sensor, with RFID reader

2 communication unit,

3 electronics, node drive

4 driving rod

5 earth surface

0 drill pipe with drill head and crown holder 1 actuators, sensors,

00 surface computer

01 Bohrstellenrechner, node calculator

02 wiring

03 communication unit

04 radio antenna

Claims

claims

1. Communication system for transmitting information about

A drill string (3, 4, 5, 6, 8, 9, 10, 80) of a drill string for earth bores, comprising a first drill string (8, 80), one or more second ones

Drill pipe (3, 4, 5, 6, 9, 10) and a drill drive (7), wherein the first drill pipe (8, 80) and the second or the (s) drill pipe (3, 4, 5, 6, 9, 10) is formed in each case from a hollow cylindrical drill pipe (11) with at least one axially extending line (21, 22) and with an upper end (13) and a lower end (14), the lower end (14) of the first drill string (8, 80) a receptacle for a

Drill head, each of the second drill string (3, 4, 5, 6, 9, 10) with its lower end (14) with the upper end (13) of the first

Drill (8, 80) or another second drill string (3, 4, 5, 6, 9, 10) rotatably connected and with its upper end (13) with the lower end (14) of a further second drill string (3, 4, 5, 6, 9, 0) or rotationally fixedly connected to the drill drive (7), wherein the

Communication system further includes:

a sensor system (81) and / or actuator system (81), from or to the measuring,

Parameterizing, status and / or control data to be transmitted and which at the lower end (14) of the first drill string (8, 80) and / or arranged on the drill head / are,

- A first communication unit (72) and a drive-side electronics (73), both of which are arranged on or in the drill drive (7) and connected to each other,

a surface computer (100, 101) for monitoring the bore hole, which communicates with the drive-side electronics (73) and receives or provides the data of the sensor system (81) and / or actuators (81),

- Further communication units (17, 19), of which at least one at the upper end (13) of the first drill string (8, 80) and at least one each at the two ends (13, 14) of the second or the second

Drill string (s) (3, 4, 5, 6, 9, 10) are arranged,

- At least one electronics (15) with a microcontroller respectively in the drill string (3, 4, 5, 6, 8, 9, 10, 80), and

at least one energy supply for the communication units (17, 19) and the electronics (15) in each case in the drill pipes (3, 4, 5, 6, 8, 9, 10, 80),

wherein the sensors (81) and / or actuators (81) and the communication unit (17) of the first drill pipe (8, 80) via the electrical line (21, 22) are interconnected and the electronics (15) of the first

Bohrgestänges (8, 80) data technically between the sensor (81) and / or actuators (81) and the communication unit (17) of the first drill string (8, 80), and the communication units (17, 19) of each second drill string (3 , 4, 5, 6, 9, 10) via the electrical line (21, 22) are interconnected, wherein the electronics (15) of the respective second drill pipe (3, 4, 5, 6, 9, 10) data technically between the

Communication units (17, 19) is located,

and wherein the communication units (17, 19, 72) are radio modules, and each of the communication units (17, 19, 72) is adapted to send the data to the immediately adjacent communication unit (17, 19) of the next drill pipe (3, 4, 5 , 6, 8, 9, 10, 80) or the drill drive (7)

transmit and / or receive from this data.

2. Communication system according to claim 1, characterized in that each drill string (3, 4, 5, 6, 8, 9, 10, 80) is associated with a unique identifier over which it is identifiable.

3. Communication system according to claim 1 or 2, characterized in that each drill string (3, 4, 5, 6, 8, 9, 10, 80) forms a node in an ad hoc network.

4. Communication system according to claim 2 or 3, characterized in that the identifier in the electronics (15) and / or in one or more of the Communication units (17, 19) stored and interrogated by the drive-side communication unit (72).

5. Communication system according to claim 2, 3 or 4, characterized

in that each drill string (3, 4, 5, 6, 8, 9, 10, 80) has an RFID transponder in which the identifier is stored.

6. Communication system according to claim 5, characterized in that the drill drive (7) has a proximity sensor with an RFID reading unit, which is connected to the drive-side electronics (73) and is adapted, when approaching a drill string (3, 4, 5, 6, 8, 9, 10, 80) to activate its RFID transponder for the transmission of the identifier.

7. Communication system according to claim 5 or 6, characterized in that the RFID transponder is an active RFID transponder, which is connected to the power supply and is adapted to

Turn on power supply when it receives an activation signal.

8. Communication system according to one of the preceding claims, characterized

characterized in that the communication units (17, 19) thereto

are set up to transfer the data via WLAN.

Drill pipe (3, 4, 5, 6, 9, 10) for a drill string for earth bores for establishing a communication system according to one of claims 1 to 8, comprising a hollow cylindrical drill pipe (11) having an upper end (13) and a lower end (14), and at least one between the upper and the lower end (13, 14) lying electrical line (21, 22) which is guided to the two ends (13, 14), wherein the lower end ( 14) with the upper end (13) of another drill string (3, 4, 5, 6, 8, 9, 10, 80) rotatably connected and the upper end (13) with the lower end (14) of another drill string (3 , 4, 5, 6, 9, 10) or with a drill drive (7) rotatably connected, characterized in that at both ends (13, 14) at least one communication unit (17, 19) arranged at least one electronics (15) with a microcontroller, and at least one Power supply for the communication units (17, 19) and the

Electronics (15) are present, wherein the communication units (17, 19) via the electrical line (21, 22) are interconnected and the electronics (15) data technology lies between the communication units, and the communication units (17, 19) are radio modules, wherein each of the communication units (17, 9) is arranged to transmit data to an immediately adjacent communication device (17, 19) of the next drill string (3, 4, 5, 6, 8, 9, 10, 80) or the drill drive (7). to transmit and / or receive from this data.

A drill string (8, 80) for a drill string for ground drilling for constructing a communication system according to any one of claims 1 to 8, comprising a hollow cylindrical drill pipe (1) having an upper end (13) and a lower end (14), and with at least one electrical line (21, 22) lying between the upper and lower ends (13, 14), which is guided to the two ends (13, 14), wherein the lower end (14) has a receptacle for a drill head and the upper end (13) with the lower end (14) of another drill string (3, 4, 5, 6, 9, 10) or with a drill drive (7) is rotatably connected, characterized in that a sensor (81) and / or actuators (81), from which or to which data can be transmitted, is / are arranged at the lower end (14)

Communication unit (17) at the upper end (13) is arranged, at least one electronics (15) with a microcontroller, and at least one

Power supply for the communication units (17, 19) and the

Electronics (5) are present, wherein the communication unit (17) and the sensor (81) and / or actuators (81) via the electrical line (21, 22) are interconnected and the electronics (15) data technically between the sensor (81 ) and / or actuators (81) and the communication unit (17), and the communication unit (17) is a radio module, wherein the

Communication unit (17) is arranged to transmit data to an immediately adjacent communication device (19) of the next drill string (3, 4, 5, 6, 9, 10) or the drill drive (7) and / or receive from this data.

11. Drill pipe (3, 4, 5, 6, 8, 9, 10, 80) according to claim 9 or 10, characterized in that the communication units (17, 19) are combined transmitting / receiving devices (transceivers).

12. drill pipe (3, 4, 5, 6, 8, 9, 10, 80) according to one of the preceding claims 9 to 11, characterized in that in the drill pipe (11) a

Tilt sensor (16) for detecting the state of the drill string (3, 4, 5, 6, 8, 9, 10, 80) is arranged.

13. drill pipe (3, 4, 5, 6, 8, 9, 10, 80) according to one of the preceding claims 9 to 12, characterized in that the inclination sensor (16) connected to the power supply and is adapted to

Power supply for the electronics (15) and for the

Switching communication units (17, 19) at a transition of the drill string (3, 4, 5, 6, 8, 9, 10, 80) from a horizontal position state to a vertical position state and at a transition of

To turn off drill string (3, 4, 5, 6, 8, 9, 10, 80) from a vertical position state to a horizontal position state.

14. drill pipe (3, 4, 5, 6, 8, 9, 10, 80) according to one of the preceding claims 9 to 13, characterized in that the power supply is removably mounted on or in the drill pipe (11), in particular pluggable.

15 drill pipe (3, 4, 5, 6, 8, 9, 10, 80) according to one of the preceding claims 9 to 14, characterized in that the power supply is switchable.

16 drill pipe (3, 4, 5, 6, 8, 9, 10, 80) according to one of the preceding claims 9 to 15, characterized in that the drill pipe (11) at least one recess, in particular a pocket-shaped recess, for protected recording the power supply, the electronics (15) and / or one of the communication units (17, 19).

17. drill pipe (3, 4, 5, 6, 8, 9, 10, 80) according to claim 16, characterized

characterized in that in the recess plug contacts for electrical Plug contact with the power supply, the electronics (15) and / or a communication units (17, 19) are located.

18 drill pipe (3, 4, 5, 6, 8, 9, 10, 80) according to one of the preceding claims 9 to 17, characterized in that the power supply is formed from batteries.

19 drill pipe (3, 4, 5, 6, 8, 9, 10, 80) according to one of the preceding claims 9 to 18, characterized in that the power supply

is rechargeable.

20 drill pipe (3, 4, 5, 6, 8, 9, 10, 80) according to one of the preceding claims 9 to 19, characterized in that the drill pipe (11) comprises means for automatically recharging the power supply during operation of the drill pipe ,

21 drill pipe (3, 4, 5, 6, 8, 9, 10, 80) according to one of the preceding claims 9 to 20, characterized in that the power supply at least one optical and / or acoustic means for displaying the state of charge, the residual capacity and / or still available supply duration.

22 drill pipe (3, 4, 5, 6, 8, 9, 10, 80) according to one of the preceding claims 9 to 21, characterized in that the power supply and the electronics (15) structurally form a unit.

23 drill pipe (3, 4, 5, 6, 8, 9, 10, 80) according to one of the preceding claims 9 to 22, characterized in that it comprises for each communication unit (17, 19) an electronics (15), wherein Communication unit (17, 19) and electronics (15) structurally form a unit.

24 drill pipe (3, 4, 5, 6, 8, 9, 10, 80) according to one of the preceding claims 9 to 23, characterized in that it is for each communication unit (17, 19) has a power supply, wherein communication unit (17, 19) and power supply (15) structurally form a unit.

25 drill pipe (3, 4, 5, 6, 8, 9, 10, 80) according to one of the preceding claims 9 to 24, characterized in that the electronics (15) and / or the power supply in the axial center of the drill pipe ( 11) is arranged / are.

26. Drill pipe (3, 4, 5, 6, 8, 9, 10, 80) according to one of the preceding claims 9 to 25, characterized in that the communication unit (17) or the communication units (17, 19) has a housing / have, with which it is mounted outside the drill pipe (11) / are.

27 drill pipe (3, 4, 5, 6, 8, 9, 10, 80) according to claim 26, characterized

characterized in that the housing or the housing by a

Non-metallic material has sealed opening / directed towards the outer edge of the end (13, 14) on which the corresponding communication unit (17, 19) is arranged.

28 drill pipe (3, 4, 5, 6, 8, 9, 10, 80) according to any one of the preceding claims, 16 to 27, characterized in that the recess has a closed by a non-metallic material opening in the direction of the outer Edge of the end (13, 14) is directed to the

corresponding communication unit (17, 19) is arranged.

29 drill pipe (3, 4, 5, 6, 8, 9, 10, 80) according to one of the preceding claims 9 to 28, characterized in that it has at least one sensor connected to the electronics (15), in particular a pressure sensor and / or a temperature sensor.

30 drill pipe (3, 4, 5, 6, 8, 9, 10, 80) according to one of the preceding claims 9 to 29, characterized in that there is at least one connected to the electronics (15) actuator, in particular a valve, a Motor and / or a pump.

31. Drill pipe (3, 4, 5, 6, 8, 9, 10, 80) according to one of the preceding claims 9 to 30, characterized in that the communication unit (17) or the communication unit (17, 19) in a distance between 15 cm and 20 cm before the edge of the end / ends (13, 14) of the drill pipe (11) is / are arranged.

32. Drill pipe (3, 4, 5, 6, 8, 9, 10, 80) according to one of the preceding claims 9 to 31, characterized in that the communication unit (17) or the communication unit (17, 19) for a near field communication in such a way is set up / are that their transmitter range (s) is less than 1m, in particular between 30 and 50cm / amount.

33. Drill pipe (3, 4, 5, 6, 8, 9, 10, 80) according to one of the preceding claims 9 to 32, characterized in that the electrical line (21, 22) is one or more pairs.

34. A drill string for performing earth bores, characterized in that it consists of a first drill pipe (8, 80) according to one of claims 10 to 33 and at least one second drill pipe (3, 4, 5, 6, 9, 10) according to one of Claims 9 to 33 is.