WO2022194159A1 - Dispositif et procédé de diagraphie de puits - Google Patents

Dispositif et procédé de diagraphie de puits Download PDF

Info

Publication number
WO2022194159A1
WO2022194159A1 PCT/CN2022/080987 CN2022080987W WO2022194159A1 WO 2022194159 A1 WO2022194159 A1 WO 2022194159A1 CN 2022080987 W CN2022080987 W CN 2022080987W WO 2022194159 A1 WO2022194159 A1 WO 2022194159A1
Authority
WO
WIPO (PCT)
Prior art keywords
section
sub
insulating
short
signal
Prior art date
Application number
PCT/CN2022/080987
Other languages
English (en)
Chinese (zh)
Inventor
徐梓辰
Original Assignee
徐梓辰
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202110279665.0A external-priority patent/CN113073969A/zh
Application filed by 徐梓辰 filed Critical 徐梓辰
Publication of WO2022194159A1 publication Critical patent/WO2022194159A1/fr

Links

Images

Classifications

    • 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

Definitions

  • the present application relates to the technical field of oil and gas exploration, and in particular, to a logging device and method.
  • the detection of underground resources requires a large number of logging tools.
  • the existing technology can perform well logging for vertical wells, inclined wells, and lateral wells.
  • the existing logging tools or LWD tools cannot pass through high-curvature well sections or branch well sections with a curvature radius of less than 30 meters, especially through extremely short-radius well sections or extremely short-radius branch sections with a curvature radius of less than 10 meters Well section. This limits logging or logging while drilling operations in high-curvature boreholes, increases the difficulty of traversing, and hinders the evaluation of thin-bed resources or side-hole resources.
  • the embodiment of the present application provides a logging device, which is used to ensure the smooth progress of the logging operation, improve the economic benefit, and reduce the operation difficulty of the construction well section.
  • the device includes:
  • the sub-section series includes: at least one transmitting and receiving sub-section and a plurality of transmitting sub-sections connected in a hinged manner;
  • the transceiving short section is provided with a signal transceiving unit for transceiving formation signals;
  • At least one short carrying section is used for accommodating the control unit and/or the signal acquisition unit, and the short carrying section is connected in series to any position in the series of short joints in a hinged manner, or the short carrying section is arranged at any position in the series. above the sub-section series, or, the carrying sub-section is arranged below the sub-section series;
  • the carrying short section is provided with a control unit and/or a signal acquisition unit, and the control unit and/or the signal acquisition unit are electrically connected with the signal transceiver unit by jumping the measurement line, when the control unit and/or the signal acquisition unit
  • the acquisition unit is a control unit, it is used to control the signal transceiver unit to transmit signals to the formation, and when the control unit and/or the signal acquisition unit is a signal acquisition unit, it is used to collect the formation signal received by the signal transceiver unit .
  • the device further comprises: a drill string disposed above the sub-section series, for transporting the sub-section series into the wellbore;
  • the length of the sub-section series is greater than the length of the lateral well section of the wellbore, the lateral well section includes a high-curvature deflection well section and its extended well section, and the curvature radius range of the high-curvature deflection well section 0-60m.
  • the carrying pup joints are connected in series in the pup joint series in a hinged manner, and the axial lengths of the transmitting and receiving pup joints, the carrying puppet joints, and the transmission puppet joints are all less than or equal to all the lengths of the axes. 5 times the outer diameter of the transmission subsection.
  • the device further includes: a lower communication circuit, a jumper line, an upper communication circuit and a mud pulser that are electrically connected in sequence;
  • the lower communication circuit is electrically connected with the control unit and/or the signal acquisition unit;
  • the lower communication circuit is used to transmit the logging signal from the control unit and/or the signal acquisition unit to the upper communication circuit through the jumper line, and to the upper communication circuit through the upper communication circuit to the short section. Mud pulser above the tandem;
  • the mud pulser is used for sending the logging signal to the receiver at the wellhead through the drill string.
  • the device further includes: a data storage unit, electrically connected to the signal acquisition unit, for storing the formation signals collected by the signal acquisition unit.
  • a data storage unit electrically connected to the signal acquisition unit, for storing the formation signals collected by the signal acquisition unit.
  • the signal transceiver unit includes: at least two transceiver coils, which transmit and/or receive signals to the formation in the form of electromagnetic waves;
  • Each of the transceiver coils is arranged on a corresponding transceiver short section.
  • the signal transceiving unit includes: at least two transducers, which transmit and/or receive signals to the formation in the form of sound waves;
  • Each of the transducers is disposed on a corresponding one of the transceiver subsections.
  • the signal transceiving unit includes a radiation detection device or a radiation source
  • the ray detection device is used to receive signals from the formation in the form of radioactive rays
  • the radioactive source is used to transmit signals to the formation in the form of radioactive particles.
  • the signal transceiving unit includes electrodes, which transmit and/or receive signals to the formation in the form of transmitting and receiving currents;
  • the logging device includes at least two of the signal transceiving units carrying electrodes.
  • the device includes a plurality of the control units and/or signal acquisition units that are electrically connected to each other;
  • a plurality of the control units and/or signal acquisition units are used to coordinately control a plurality of signal transceiving units.
  • the device further includes: an elastic member that runs through the series of short sections and is used to make the plurality of the transceiver short sections in a coaxial state.
  • the device further includes: an attitude measurement unit, which is arranged on the transceiving sub-section and/or the bearing sub-section.
  • the attitude measurement unit includes: at least one accelerometer and one magnetometer, the accelerometer and the magnetometer are arranged on the axis of the transceiver sub-section, and are used to measure the transceiver sub-section of inclination and azimuth.
  • control unit and/or the signal acquisition unit are prepared by using a thick film circuit process.
  • the maximum deflectable angle between the axes of the two adjacent short When the dead center position of the structure is reached, the maximum deflectable angle is 2°-10°.
  • the embodiments of the present application also provide a logging method to ensure the smooth progress of logging operations, improve economic benefits, and reduce the difficulty of operation in construction well sections, the method comprising:
  • the sub series comprising: at least one transmitting and receiving sub and a plurality of transmitting subs that are connected in an articulated manner ;
  • control unit and/or the signal acquisition unit on the bearing short section to control the signal transceiver unit to transmit signals to the formation;
  • the formation signal received by the signal transceiver unit is collected by the control unit and/or the signal collection unit.
  • the signal transceiver unit By setting the control unit and/or the signal acquisition unit, the signal transceiver unit can be controlled to transmit signals to the formation, and the formation signals received by the signal transceiver unit can be collected, so as to ensure the smooth progress of the logging operation.
  • FIG. 1 is a schematic structural diagram of a logging device in an embodiment of the application
  • FIG. 2 is a first partial schematic diagram of the logging device in the embodiment of the application.
  • FIG. 3 is a second partial schematic diagram of the logging device in the embodiment of the application.
  • FIG. 4 is a third partial schematic diagram of the logging device in the embodiment of the application.
  • FIG. 5 is a fourth partial schematic diagram of the logging device in the embodiment of the application.
  • FIG. 6 is a flowchart of a logging method in an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a signal transmitting apparatus in an embodiment of the present invention.
  • FIG. 8 is a partial schematic diagram of a signal transmitting apparatus in an embodiment of the present invention.
  • FIG. 9 is a partial schematic diagram of a signal transmitting apparatus in an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a signal transmitting apparatus in an embodiment of the present invention.
  • FIG. 11 is a partial schematic diagram of a signal transmitting apparatus in an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of a signal transmitting apparatus in an embodiment of the present invention.
  • FIG. 13 is a partial schematic diagram of a signal transmitting apparatus in an embodiment of the present invention.
  • an embodiment of the present application provides a logging device.
  • the device includes: a sub-section string Y for passing through a wellbore with a curvature radius within a preset range, a signal transceiver unit 4.
  • the sub-section series includes: at least one transceiver sub-section 3 and a plurality of transmission sub-sections 1 which are connected in a hinged manner.
  • the transceiving short section 3 is provided with a signal transceiving unit 4 for transceiving formation signals.
  • At least one short bearing joint 2 is used to accommodate the control unit and/or the signal acquisition unit 5, and the bearing short joint 2 is connected in series to any position in the short joint series Y in a hinged manner, or, the bearing short joint 2 is arranged on the short joint Above the series Y, or, the carrying sub-section 2 is arranged below the sub-section series Y.
  • the carrying short section 2 is provided with a control unit and/or a signal acquisition unit 5, and the control unit and/or the signal acquisition unit 5 are electrically connected with the signal transceiver unit 4 by jumping the measurement line 10.
  • control unit and/or the signal acquisition unit 5 When it is a control unit, it is used to control the signal transceiver unit 4 to transmit signals to the formation, and when the control unit and/or the signal acquisition unit 5 is a signal acquisition unit, it is used to collect the formation signal received by the signal transceiver unit 4 .
  • the wellbore includes a main wellbore and a branch well section, and the above-mentioned sub-section series Y, the signal transceiver unit 4, and the control unit and/or the signal acquisition unit 5 are used to pass through the radius of curvature within the preset range.
  • Wellbore which is used to pass through the main wellbore and the branch well section with the curvature radius within the preset range in sequence (mainly using the flexibility of the hinged structure to pass through the junction of the main wellbore and the branch well section, the junction
  • the separation curve between the main wellbore and the branch well section in Fig. 1).
  • the length of the carrying puppets 2 needs to be substantially the same as the length of the sending and receiving pegs 3 or the length of the transmission pegs 1 .
  • the short bearing joints 2 are arranged above the series Y of short joints, there is no limit to the length of the short bearing joints 2 .
  • the plurality of transmitting and receiving sub-sections 3, the plurality of carrying sub-sections 2 and the plurality of transmitting sub-sections 1, which are connected in a hinged manner, are passed through a wellbore with a curvature radius within a preset range.
  • the signal transceiving unit 4 on the transceiving short section 3 is used to transmit and receive formation signals.
  • the control unit on the bearing sub 2 is used to control the signal transceiver unit 4 to transmit signals to the formation, and the signal acquisition unit 5 is used to collect the formation signal received by the signal transceiver unit 4 through the bridge measurement line 10.
  • the signal transceiver unit 4 when the control unit And/or when the signal acquisition unit 5 is a control unit, the signal transceiver unit 4 is controlled to transmit signals to the formation, and when the control unit and/or the signal acquisition unit 5 is a signal acquisition unit, the formation signal received by the signal transceiver unit 4 is collected.
  • the sub-section series includes: a plurality of transmitting and receiving sub-sections 3 , a plurality of carrying sub-sections 2 and a plurality of transmission sub-sections 1 that are connected in a hinged manner.
  • the transceiver sub-section 3, the carrying sub-section 2 and the transmission sub-section 1 can be connected according to the working needs.
  • the end of the sub-section series Y can be connected to drilling equipment, and the head end can be connected to the mud pulser 9 at the wellhead.
  • the transceiver sub-section 3 and the bearing sub-section 2 can be arranged in the branch well section near the bottom of the well. in,
  • the logging device provided by the embodiment of the present application, by setting a plurality of transceiver sub-sections 3, a plurality of load-bearing sub-sections 2 and a plurality of transmission sub-sections 1 which are connected in a hinged manner, it is ensured that the sub-section series Y can be smoothly Passing through the wellbore with the curvature radius within the preset range ensures the smooth progress of subsequent logging operations, improves economic benefits, and reduces the difficulty of operation in the construction well section.
  • the signal transceiving unit 4 By arranging the signal transceiving unit 4 on the transceiving short section 3, the transceiving of formation signals can be realized.
  • the signal transceiver unit 4 can be controlled to transmit signals to the formation, and the formation signals received by the signal transceiver unit 4 can be collected to ensure the smooth progress of the logging operation.
  • the functions of the plurality of transmission sub-sections 1 are to form the sub-section series Y in a serial manner or to connect a plurality of transceiver sub-sections 3 .
  • the number of the transceiver sub-sections 3 is at least two, so as to form an array logging system, which can greatly improve the logging operation accuracy.
  • the logging device includes at least two of the control units and/or signal acquisition units 5 to coordinately control two or more signal transceiver units, and at least two of the control units and/or signal acquisition units 5 are electrically connected. It should be noted that, in order to ensure that the logging signal is not disturbed by vibration, the jumper measurement line 10 is fixed on the short section series Y through a fixing member.
  • the signal transceiver unit 4 and the control unit and/or the signal acquisition unit 5 are isolated and arranged in different short sections hinged to each other, and the electrical connection between the control unit and/or the signal acquisition unit and the signal transceiver unit is realized by bridging the measurement line 10.
  • the connection greatly improves the passability of the logging device, and at the same time ensures the feasibility of the technology.
  • the bending moment is isolated by means of articulation, so that the sensor on the transmission sub-section 1 is not easily damaged.
  • it further includes: a drill string X, which is arranged above the sub-joint string Y and used to transport the sub-section string Y into the wellbore; the length of the sub-section string Y is longer than that of the lateral well length of the segment.
  • the branch well section includes a high-curvature deflecting well section and its extended well section, and the curvature radius of the high-curvature deflecting well section ranges from 0 to 60 m.
  • it can be a short-radius well with a curvature radius of 10m-60m, or a very short-radius well with a curvature radius of 0-10m.
  • the drill string X can be a high-rigidity drill string, which can be formed by serially connecting two drill pipes made of continuous steel pipes with threads.
  • the purpose of the high-curvature deflection well section is to deviate the extension direction of the lateral wellbore from the main wellbore with as little footage as possible, so as to achieve the preset extension direction. Therefore, during the construction of short-to-extremely short-radius lateral wells, the curvature radius of the high-curvature deflecting well section is between 0 and 60 meters, but the extended well section is often the stable deviated well section.
  • the purpose of the present application is to solve the problem that short-extremely short radius lateral wells cannot realize well logging, so the logging device must be able to pass through the high-curvature deflection well section.
  • the use of a drill string transmission logging device in the main wellbore can greatly reduce the length of the sub string Y and reduce the risk of accidents.
  • the carrying pup joint 2 is connected in series in the pup joint series Y in a hinged manner, and the axial lengths of the sending and receiving pup joint 3, the carrying pup joint 2 and the transmission pup joint 1 are all less than or equal to the length of the outer diameter of the transmission pup joint 1. 5 times.
  • the signal transceiving unit 4 can transmit and receive acoustic signals, electrical signals, magnetic signals, radioactive rays or particles, and the like.
  • the signal transceiving unit 4 includes a radiation detection device.
  • the radiation detection device is used to receive signals in the form of radioactive rays
  • the radiation detection device is a combination of a scintillation crystal and a photomultiplier tube, which can detect gamma signals from the formation.
  • the control unit and/or the signal acquisition unit 5 includes a counting circuit, which can record the electrical pulse information generated by the viewpoint multiplier tube.
  • the scintillation crystal 41 and the photomultiplier tube 42 are arranged in the signal transceiver unit 4 in combination, and the counting circuit 43 is arranged in the control unit and/or the signal acquisition unit 5 , and the photomultiplier tube and the counting circuit are connected across the The measurement circuit is electrically connected, and the signal transceiver unit 4 is separated from the control unit and/or the signal acquisition unit 5 by 1-3 hinge structures.
  • the photomultiplier tube 42 is powered by a power supply circuit 44 .
  • the signal transceiving unit 4 includes: at least two transceiving coils, which transmit and/or receive signals to the formation in the form of electromagnetic waves, each transceiving coil is disposed on a corresponding transceiving short section 3 .
  • a tuning circuit is also provided on the short carrying section 2, and the tuning circuit is used to drive the transceiver coil to transmit or receive electromagnetic waves.
  • the tuning circuit can be a tuning circuit board, which at least includes a capacitor, which can form an oscillation circuit with a transmitting or receiving coil, and can excite electromagnetic waves.
  • each transceiver coil is set on a corresponding transceiver subsection 3, and each two adjacent transceiver subsections 3 have a preset distance, by setting in this way, the array can be guaranteed The effect of logging, and then through the high-curvature wellbore to achieve array electromagnetic wave induction logging or array induction logging.
  • the transceiver coil includes a magnetic conductor arranged coaxially with the drilling tool and a coil wound on the outer or inner side of the magnetic conductor.
  • the coil is generally wound along the circumferential direction of the drill string for generating a surrounding The current field of the drill string.
  • the transceiver coil includes a helical ring or a helical ring for generating a magnetic field around the drill string and a current along the axial direction of the drill string.
  • the current path drill bit along the axial direction of the drill string flows into the formation, and the control unit and/or the signal acquisition unit 5 can obtain the resistance of the formation by measuring the current or voltage. The smaller the current is, the specific analysis method is the prior art, which will not be repeated here.
  • the signal transceiving unit 4 includes: at least two transducers, which transmit and/or receive signals to the formation in the form of sound waves, and each transducer is arranged on a corresponding transceiving short section 3 .
  • the best choice of transducer is piezoelectric ceramic or magnetostrictive transducer.
  • the signal transceiving unit 4 is a transducer and is used to transmit or receive acoustic signals. It is necessary to first send the articulated sub into the section to be logged, and during the reverse pulling process To achieve acoustic logging, the partial schematic diagram of the logging device at this time can be seen in FIG. 5 .
  • the signal transceiver unit 4 in FIG. 5 is a transducer. It should be noted that, since each transducer is arranged on a corresponding transceiver sub-section 3, and each two adjacent transceiver sub-sections 3 have a preset distance, by setting in this way, it can be ensured that The effect of array logging is achieved, and then array acoustic logging is realized through a high-curvature wellbore, especially reflected acoustic logging is realized through a plurality of transceiver subsections 3 provided with transducers.
  • the signal transceiving unit 4 may comprise electrodes for transmitting and/or receiving signals to the formation in the form of transmitting and receiving currents, and the logging device comprises at least two signal transceiving units 4 carrying electrodes.
  • the control unit and/or the signal acquisition unit 5 may be a control circuit board and/or a signal acquisition circuit board. Based on the characteristics of low noise and high stability of the thick film circuit, the control unit and/or the signal acquisition unit 5 can be fabricated by using the thick film circuit process.
  • the maximum deflectable angle is 2°-10°. It should be noted that the dead center position of the structure is the angular position at which the movable space of the input end and the output end of the hinged structure is exhausted.
  • the larger the preset value of the maximum deflectable angle the better the passability of the sub series Y, but the easier it is to buckling, so the preset value of the maximum deflectable angle can satisfy the curvature of the well section through which the tool may pass. .
  • the hinge structure adopted between any two short joints may be a universal joint and a joint structure that can transmit axial force, for example, a universal joint that can transmit axial force, or any universal joint Combination with ball hinge.
  • the universal energy saving of the cross shaft which can not only transmit the axial force but also realize the universal transmission, is equivalent to the hinge joint.
  • the joint structure includes: a ball head 13 and a ball socket 14 .
  • a torque transmission structure 12 is also arranged between the ball head 13 and the ball socket 14 , and the ball head 13 can deflect in the ball socket 14 .
  • the torque transmission structure 12 includes a torque transmission pin 15 and a torque transmission slot 16 , the torque transmission pin 15 is arranged on the outer side of the ball head 13 , and the torque transmission slot 16 is arranged at the inner side of the ball socket 14 , or, torque transmission The pin 15 is arranged on the inner side of the ball socket 14, and the torque transmission groove 16 is arranged on the outer side of the ball head 13; the torque transmission pin 15 can be spherical or cylindrical; in addition, the torque transmission structure 12 is not limited to the torque transmission pin 15 and the torque transmission groove 16. One form does not rule out the use of teeth, grooves, etc. to transmit torque.
  • the length of the sub-joint string can be set to be greater than the length of the branch well section.
  • the device in order to ensure the smooth transmission of logging data to the uphole, as shown in FIG. 1 and FIG. 3 , the device further includes: a lower communication circuit 6 , a jumper circuit 7 , a lower communication circuit 6 electrically connected in sequence from bottom to top, Connect the communication circuit 8 and the mud pulser 9.
  • the lower communication circuit 6 is electrically connected with the control unit and/or the signal acquisition unit 5 .
  • the lower communication circuit 6 is used to transmit the logging signal from the control unit and/or the signal acquisition unit 5 to the upper communication circuit 8 through the jumper line 7, and to the upper communication circuit 8 through the upper communication circuit 8. Mud Pulser 9.
  • the mud pulser 9 is used to send the logging signal through the drill string X to the receiving end at the wellhead. It should be noted that “up” in this application refers to the direction of the wellhead, and “down” refers to the direction of the bottom of the well.
  • the logging signal collected by the lower communication circuit 6 can be transmitted to the mud pulser 9 in the main wellbore through the jumper circuit 7 and the upper communication circuit 8, and the mud pulser 9 transmits the signal to the wellhead signal receiving end.
  • the device further includes: a power supply unit, which is arranged in the main wellbore and is electrically connected to the upper communication circuit 8 .
  • the power supply unit can be connected in series to any position in the driving drill string, or connected to the upper end of the driving drill string.
  • the lower communication circuit 6 includes a signal modulation circuit.
  • the upper communication circuit 8 includes a signal demodulation circuit. Jumper lines 7 are used to transfer power and signals.
  • the signal modulation circuit can load logging data into the jumper line 7 through the AC component; the signal demodulation circuit can separate the signal from the jumper line 7, and the signal modulation circuit modulates the sent information so that it can be easily superimposed to
  • the circuit modulation method includes but is not limited to frequency modulation, amplitude modulation, phase modulation and pulse modulation, and the modulated signal is superimposed on the power supply signal in the jumper wire; the signal demodulation circuit is arranged in the short section series.
  • the demodulation circuit can pick up the information-carrying modulation component on the jumper line 7, and demodulate the picked-up modulation component according to the modulation method to form a digital signal that can be processed by the mud pulser.
  • the mud pulser 9 further transmits the digital signal to the signal receiving end of the wellhead in the form of mud pulse wave.
  • the device when the sub-sections need to be lifted up in series to obtain logging data, the device further includes: a data storage unit.
  • the data storage unit is electrically connected with the signal acquisition unit 5 and is used for storing the formation signals acquired by the signal acquisition unit 5 .
  • the data memory includes at least a memory chip.
  • control unit and/or the signal acquisition unit 5 can be connected to the tuning circuit 11 through the jumper measurement line 10, and the jumper measurement line 10 is connected by a fixing part Fastened to the short section string, see Figures 1 and 2.
  • the jumper measurement line 10 may be fixed on the pup string by means of bolt assemblies.
  • the device further includes: an elastic member 17 .
  • the elastic member 17 runs through the sub-section series Y, and is used to make the plurality of transceiver sub-sections 3 in a coaxial state.
  • the elastic member 17 can be an elastic rod or an elastic tube or the like.
  • the device further includes: an attitude measurement unit.
  • the attitude measurement unit is arranged on the transceiving sub-section 3 and/or the carrying sub-section 2 .
  • the attitude measurement unit includes: at least one accelerometer and one magnetometer, the accelerometer and the magnetometer are arranged on the axis of the transceiver sub-section 3, and are used to measure the inclination angle of the transceiver sub-section 3 and the Azimuth.
  • the attitude measurement unit can measure the inclination angle and/or the gravity tool face angle and/or the magnetic tool face angle of the highly flexible logging instrument downhole, and can provide the azimuth logging equipment with the gravity tool face angle and/or Magnetic tool face angle information, the attitude measurement unit includes at least one magnetometer, and the bearing body is made of non-magnetic material. It can obtain the attitude of each transceiver unit, such as the orientation of the coil or antenna, obtain the orientation information of the transducer, and solve the measurement error caused by the uncertainty of the orientation of the coil or the transducer caused by the buckling of the sub-section array.
  • the distance between adjacent two sub joints can be Has a preset differential value.
  • the adjacent two sub-sections may be: the transceiver short section 3 and the carrying short section 2 , the carrying short section 2 and the transmission short section 1 , and the transceiver short section 3 and the transmission short section 1 .
  • the transmitting and receiving short section 3, the carrying short section 2 and the transmitting short section 1 are connected in sequence, and the length of the carrying short section 2 is 5m, then at this time, both the transmitting and receiving short section 3 and the transmitting short section 1 should be If the length is less than 5m, preferably, the length of the transmitting and receiving short section 3 and the transmitting short section 1 can be set to 3m-4m, that is, less than 80% of the length of the carrying short section 2 .
  • the purpose of this setting is to ensure that the lengths of the two adjacent sub-sections with test functions are not long, so as to avoid affecting the normal use of the signal transceiver unit 4, the control unit and/or the signal acquisition unit 5 on the two sub-sections.
  • an embodiment of the present application provides a method for logging by using the above logging device. As shown in FIG. 6 , the method includes:
  • Step 101 Pass a sub-section series with logging function through a wellbore with a curvature radius within a preset range, the sub-section series including: at least one transceiver sub-section and a plurality of sub-sections connected in a hinged manner. send short section;
  • Step 102 using the control unit and/or the signal acquisition unit on the bearing short section to control the signal transceiver unit to transmit signals to the formation;
  • Step 103 Use the control unit and/or the signal acquisition unit to collect the formation signal received by the signal transceiver unit.
  • the short section series Y includes: at least one insulating short section 18 and a jumper line 7 , and the insulating short section 18 is provided with an inner insulating layer, an outer an insulating layer and an insulating cross section, the insulating cross section is respectively connected to the inner insulating layer and the outer insulating layer in an insulating manner, and the insulating short section 18 is used to realize the insulation between the transmission short sections on both sides of the insulating cross section;
  • An insulating layer is provided on the jumper measurement line 10;
  • the control unit is arranged on any transmission sub-section 1 on one side of the insulation section, and is electrically connected to the transmission sub-section 1 on the other side of the insulation section through the jumper line 7.
  • the control unit is used to make A potential difference or potential difference is generated between the transmission sub-sections 1 on both sides of the insulating section, and an electrical signal is emitted to the formation.
  • the wellbore includes a main wellbore and a branch well section
  • the above-mentioned sub-section series Y is used to pass through a wellbore with a curvature radius within a preset range, that is, it is used to sequentially pass through the curvature radius within the preset range.
  • the main wellbore and the branch well section (mainly using the flexibility of the hinge structure to pass through the junction of the main wellbore and the branch well section, the specific junction can be seen in Figure 7 between the main wellbore and the branch well section. at the separation curve).
  • the jumper line 7 in this embodiment can be used as a communication line, a measurement line or a power supply line.
  • the jumper line 7 and the jumper line 7 The function of the measurement line 10 is the same.
  • the sub-section series Y connected in an articulated manner passes through a wellbore with a radius of curvature within a preset range.
  • the control unit is used to generate a potential difference between the transmission sub-sections 1 on both sides of the insulating sub-section 18, and then an electrical signal transmitted to the formation is formed through the potential difference, so as to realize the transmission of the downhole signal.
  • the plurality of short transmission sections 1 and the plurality of short insulation sections 18 may be alternately connected, that is, at least one short transmission section 1 is respectively provided on both sides of one short insulation section 18 .
  • the signal transmitting device provided by the embodiment of the present invention, by setting a plurality of transmission sub-sections 1 and at least one insulating sub-section 18 connected in an articulated manner, it is ensured that the sub-section series Y can smoothly pass through the radius of curvature within a preset range.
  • the wellbore ensures the smooth progress of subsequent logging operations, improves economic benefits, and reduces the difficulty of operation in the construction well section.
  • the jumper line itself can be protected from leaking current into the drilling fluid, thereby interfering with electrical signals.
  • the transmission short-circuit on both sides of the insulation section can be shortened.
  • a potential difference or potential difference is generated between the nodes 1, thereby realizing the transmission of downhole electrical signals.
  • the insulating short sections 18 are formed with insulating sections, and the length of the insulating sections is 0.2m-2m.
  • the insulating short section 18 includes at least insulating threads, which can form an insulating section. It should be noted that when it is used for communication, the signal transmitting device of the present invention needs to generate a strong electric pulse or inject a strong current into the formation in a short time. Therefore, the length of the insulating section is optimal between 0.5 and 2 meters. Less than 0.5 meters can not achieve good insulation effect, more than 2 meters, the effect is not obvious, and the cost is increased. In addition, when the present invention is applied to communication to the wellhead or to the ground, a matching ground receiving antenna is required, and the matching ground receiving antenna and interpretation technology are the prior art.
  • the jumper line 7 includes a high-voltage insulating layer, and the withstand voltage value of the high-voltage insulating layer is greater than 220V, which is used to protect the conductive material in the jumper line to transmit high-voltage current.
  • the inner insulating layer of the insulating short section 18 includes any one or combination of the following:
  • the outer insulating layer of the insulating short section 18 includes: a flexible insulating outer pipe 24 and/or an outer wall insulating material 25 .
  • the inner wall insulating material 23 and the outer wall insulating material 25 may be rubber, plastic, glass, or the like.
  • the inner insulating layer of the insulating short section 18 includes: a flexible through-insulating tube 21 and an inner wall insulating material 23 , and the flexible through-insulating tube 21 runs through the series Y of short sections for making A plurality of the insulating sub-sections 18 are in a coaxial state.
  • the inner insulating layer of the insulating short section 18 includes: a flexible jumper insulating tube 22 and an inner wall insulating material 23 , and the inner walls of the two adjacent insulating short sections 18 pass through the flexible jumper 22 and the inner wall insulating material 23 . Connect to insulating tube 22.
  • insulating material is provided on the outer wall of the transmission sub-section 1 and/or the power carrying sub-section between two adjacent insulation sub-sections 18, and the transmission sub-section between the two adjacent insulation sub-sections 18 is A flexible insulating outer pipe 24 is arranged between the short joint 1;
  • a flexible through-insulating pipe 21 is arranged inside the transmission sub-section 1 between two adjacent insulation sub-sections 18, or, the transmission sub-section 1 between two adjacent insulation sub-sections 18 and/or the inner wall of the power-carrying sub-section
  • An insulating material is provided, and a flexible jumper insulating tube 22 is provided between the transmission sub-sections 1 between two adjacent insulation sub-sections 18 .
  • the control unit can be a control circuit, which can also be connected with the drill bit equipment 27 through the signal transmission line 26 to control the drill bit equipment 27 and complete the downhole drilling operation, see FIGS. 7 and 8 .
  • a helical ring is arranged at any position in the sub string Y or the drill string X, and the helical ring is used to receive the signal transmitted by the control unit.
  • a drill string X which is arranged above the sub-joint string Y, and is used to transport the sub-section string Y into the wellbore; the length of the sub-section string Y is longer than that of the lateral well length of the segment.
  • the radius of curvature of the branch well section is in the range of 0-60m.
  • it can be a short-radius well with a curvature radius of 10m-60m, or a very short-radius well with a curvature radius of 0-10m.
  • the drill string X can be a high-rigidity drill string, which can be formed by serially connecting two drill pipes made of continuous steel pipes with threads.
  • the axial length of the transmission sub 1 and the insulation sub 18 can be set to be less than or equal to 5 times the outer diameter of the drill string X.
  • the signal transmitting device further includes: at least one circuit-carrying short section 2 , and the circuit-carrying short section 2 is connected in series in the short section series Y in a hinged manner.
  • the control unit is arranged inside the circuit carrying nipple 2 , and is electrically connected to the upper and lower parts of the insulating nipple 18 through the jumper line 7 or the conductive member 19 to generate a potential difference on both sides of the insulating nipple 18 .
  • the control unit includes a switch tube, which can release the electric energy stored in the high-voltage power supply according to the preset command (refer to FIG. 7 ), and the electric energy is used to excite the potential difference between the two sides of the insulating short section 18.
  • the high-voltage power supply is a capacitor or a voltage circuit, or, the capacitor can also be charged by a boost power supply, and the switch tube directly uses the high-voltage power in the capacitor.
  • the high voltage power supply voltage is generally between 500-3000V, generally preferably 1000-2000V.
  • the signal transmitting device in the present invention can be a downhole flexible antenna, especially a downhole flexible dipole antenna.
  • the specific driving method of the control unit and the high-voltage power supply to the dipole antenna belongs to the prior art. In EM-MWD technology and low-frequency electromagnetic communication There are a large number of records in the relevant documents of the technology, which will not be repeated in the present invention.
  • insulating materials are provided on the outer walls of the transmission subsection 1 and/or the power supply subsection between the two adjacent insulation subsections 18 .
  • the insulating material on the outer wall of the transmission sub-section 1 and/or the power-carrying sub-section between two adjacent insulating sub-sections 18 may be the insulating material directly grown on the surface of the sub-section by chemical methods, or sprayed Insulating material 25 on the outer wall of the subsurface.
  • the signal emitting device further includes at least one power supply carrying short section, which is connected in series in the short section series Y in a hinged manner.
  • a power supply 20 is provided on the power carrying pup for supplying power to the control unit.
  • the power supply 20 can also be connected to the above-mentioned high-voltage power supply through the power supply line 28, so as to realize the power supply to the high-voltage power supply, see FIG. 7 , FIG. 8 and FIG. 9 . In this way, by setting the power supply 20, the power supply to the control unit and the high-voltage power supply is realized, and the subsequent operation is ensured smoothly.
  • the hinge structure adopted between any two short joints may be a universal joint capable of transmitting axial force and a joint structure, for example, a universal joint capable of transmitting axial force, or any universal joint Combination with ball hinge.
  • the universal energy saving of the cross shaft which can not only transmit the axial force but also realize the universal transmission, is equivalent to the hinge joint.
  • the joint structure includes: a ball head 13 and a ball socket 14 .
  • a torque transmission structure 12 is also arranged between the ball head 13 and the ball socket 14 , and the ball head 13 can deflect in the ball socket 14 .
  • the torque transmission structure 12 includes a torque transmission pin 15 and a torque transmission slot 16 , the torque transmission pin 15 is arranged on the outer side of the ball head 13 , and the torque transmission slot 16 is arranged at the inner side of the ball socket 14 , or, torque transmission The pin 15 is arranged on the inner side of the ball socket 14, and the torque transmission groove 16 is arranged on the outer side of the ball head 13; the torque transmission pin 15 can be spherical or cylindrical; in addition, the torque transmission structure 12 is not limited to the torque transmission pin 15 and the torque transmission groove 16. One form does not rule out the use of teeth, grooves, etc. to transmit torque.
  • the present invention ensures that the series Y of sub-sections can smoothly pass through the wellbore with the radius of curvature within the preset range by arranging the plurality of transmission sub-sections 1 and the plurality of insulation sub-sections 18 which are connected in a hinged manner. It ensures the smooth progress of subsequent logging operations, improves economic benefits, and reduces the difficulty of operation in the construction well section.
  • control unit By arranging the control unit on the transmission sub-section 1 on one side of the insulation sub-section 18, and connecting with the transmission sub-section 1 on the other side of the insulation sub-section 18 through the jumper line 7, it is ensured that two adjacent transmission sub-sections are A potential difference is generated between the nodes 1 for transmitting electrical signals to the formation, thereby realizing the transmission of downhole electrical signals.

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Geophysics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

Dispositif et procédé de diagraphie de puits. Le dispositif de diagraphie de puits comprend : une série de tubes courts (Y), une unité d'émission-réception de signal (4), une unité de commande et/ou une unité d'acquisition de signal (5), la série de tubes courts (Y) comprenant au moins un tube court d'émission-réception (3), au moins un tube court de support (2) et une pluralité de tubes courts de transmission (1) qui sont raccordés les uns aux autres de manière articulée. L'unité d'émission-réception de signal (4) pour émettre/recevoir des signaux de strate est disposée sur le tube court d'émission-réception. L'unité de commande et/ou l'unité d'acquisition de signal (5) connectée(s) électriquement à l'unité d'émission-réception de signaux est/sont disposée(s) sur le tube court de support (2), l'unité de commande étant configurée pour commander l'unité d'émission-réception de signal (4) pour transmettre des signaux à la strate, et l'unité d'acquisition de signal est configurée pour acquérir des signaux de strate reçus par l'unité d'émission-réception de signal (4). La pluralité de tubes courts de transmission (1) sont conçus pour être raccordés à une série de tubes courts à grande capacité de passage en série ou conçus pour être raccordés au tube court d'émission-réception et au tube court de support. Le dispositif et le procédé peuvent garantir que des opérations de diagraphie de puits dans une section de puits à haute courbure et une section de puits étendue de la section de puits à haute courbure sont réalisées facilement.
PCT/CN2022/080987 2021-03-16 2022-03-15 Dispositif et procédé de diagraphie de puits WO2022194159A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202110279665.0 2021-03-16
CN202110279665.0A CN113073969A (zh) 2021-03-16 2021-03-16 测井装置及方法
CN202110411541.3 2021-04-16
CN202110411541 2021-04-16

Publications (1)

Publication Number Publication Date
WO2022194159A1 true WO2022194159A1 (fr) 2022-09-22

Family

ID=83321674

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/080987 WO2022194159A1 (fr) 2021-03-16 2022-03-15 Dispositif et procédé de diagraphie de puits

Country Status (1)

Country Link
WO (1) WO2022194159A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5265687A (en) * 1992-05-15 1993-11-30 Kidco Resources Ltd. Drilling short radius curvature well bores
US5520256A (en) * 1994-11-01 1996-05-28 Schlumberger Technology Corporation Articulated directional drilling motor assembly
CN1508380A (zh) * 2002-12-18 2004-06-30 杜晓瑞 超短曲率水平井钻井和完井的方法及其装置
CN102913230A (zh) * 2012-10-29 2013-02-06 陕西联盟物流有限公司 组合测井装置
CN105064919A (zh) * 2015-07-28 2015-11-18 大庆亨得利石油技术服务有限公司 超短半径径向侧钻水平井方法
CN109854174A (zh) * 2019-04-02 2019-06-07 大庆井泰石油工程技术股份有限公司 短半径钻井工具及钻进方法
CN113073969A (zh) * 2021-03-16 2021-07-06 徐梓辰 测井装置及方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5265687A (en) * 1992-05-15 1993-11-30 Kidco Resources Ltd. Drilling short radius curvature well bores
US5520256A (en) * 1994-11-01 1996-05-28 Schlumberger Technology Corporation Articulated directional drilling motor assembly
CN1508380A (zh) * 2002-12-18 2004-06-30 杜晓瑞 超短曲率水平井钻井和完井的方法及其装置
CN102913230A (zh) * 2012-10-29 2013-02-06 陕西联盟物流有限公司 组合测井装置
CN105064919A (zh) * 2015-07-28 2015-11-18 大庆亨得利石油技术服务有限公司 超短半径径向侧钻水平井方法
CN109854174A (zh) * 2019-04-02 2019-06-07 大庆井泰石油工程技术股份有限公司 短半径钻井工具及钻进方法
CN113073969A (zh) * 2021-03-16 2021-07-06 徐梓辰 测井装置及方法

Similar Documents

Publication Publication Date Title
US11828172B2 (en) Communication networks, relay nodes for communication networks, and methods of transmitting data among a plurality of relay nodes
US7400262B2 (en) Apparatus and methods for self-powered communication and sensor network
US9217289B2 (en) Casing drilling bottom hole assembly having wireless power and data connection
US8284075B2 (en) Apparatus and methods for self-powered communication and sensor network
US9217299B2 (en) Drilling bottom hole assembly having wireless power and data connection
CN106223937B (zh) 一种适用于井下近钻头无线短传的接收装置
US9683441B2 (en) Power supply for wired pipe with rechargeable energy storage
US4525715A (en) Toroidal coupled telemetry apparatus
US20140084946A1 (en) System And Method For Wireless Power And Data Transmission In A Rotary Steerable System
US8733431B2 (en) Method and system of transmitting electromagnetic waves from a wellbore
EP1035299A2 (fr) Dispositif et procédé de télémétrie de puits ainsi que de mesure de puits utilisant un champ éléctrique
US20140083769A1 (en) Coiled Tube Drilling Bottom Hole Assembly Having Wireless Power And Data Connection
US20100182161A1 (en) Wireless telemetry repeater systems and methods
CN201232545Y (zh) 一种井下随钻无线电磁信号发射装置
US20150090444A1 (en) Power systems for wireline well service using wired pipe string
CN101291015A (zh) 随钻电磁发射天线、井下数据传输系统和方法
WO2004113677A1 (fr) Appareil et procedes pour reseau autoalimente de communications et de capteurs
CN215890010U (zh) 一种位置测量装置
CN103835705A (zh) 井下测量信息传输系统
CN113236227B (zh) 一种柔性测井装置及方法
WO2022194159A1 (fr) Dispositif et procédé de diagraphie de puits
CN206299374U (zh) 一种适用于井下近钻头无线短传的接收装置
CN113073969A (zh) 测井装置及方法
CN202954809U (zh) 井下测量信息传输系统
WO2022253208A1 (fr) Appareil de commande de position de puits ramifié à courbure élevée

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22770512

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 22770512

Country of ref document: EP

Kind code of ref document: A1