CN212428807U - High-temperature-resistant constant-power dual laterolog instrument - Google Patents
High-temperature-resistant constant-power dual laterolog instrument Download PDFInfo
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- CN212428807U CN212428807U CN202020638158.2U CN202020638158U CN212428807U CN 212428807 U CN212428807 U CN 212428807U CN 202020638158 U CN202020638158 U CN 202020638158U CN 212428807 U CN212428807 U CN 212428807U
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Abstract
The utility model discloses a high temperature resistant constant power double lateral logging instrument, which comprises an electronic instrument short section and an electrode system short section, wherein the electronic instrument short section comprises a first pressure-bearing outer protective pipe and an electronic instrument arranged in the first pressure-bearing outer protective pipe; the electrode system short section comprises a second upper pressure-bearing insulating outer protection pipe, a second lower pressure-bearing insulating outer protection pipe and a mandrel arranged in the second upper pressure-bearing insulating outer protection pipe and the second lower pressure-bearing insulating outer protection pipe, a plurality of electrode rings are sleeved on the mandrel, insulating sleeves are arranged between the adjacent electrode rings, and the electrode rings and the insulating sleeves are positioned between the second upper pressure-bearing insulating outer protection pipe and the second lower pressure-bearing insulating outer protection pipe; the lower end of the first pressure-bearing insulating outer protection pipe is connected to the upper end of the second upper pressure-bearing insulating outer protection pipe, and the plurality of electrode rings are connected to the electronic instrument. The logging instrument has the advantages that the outer diameter is small, the logging can be carried out while a drill rod is lifted, and the logging efficiency is effectively improved.
Description
Technical Field
The utility model belongs to the technical field of the oil and gas is surveyed, concretely relates to high temperature resistant constant power bilateral logging instrument.
Background
The double lateral logging instrument is a main logging instrument for measuring the formation resistivity, researching the change of the formation radial resistivity, calculating the oil saturation and determining the amount of movable oil, and mainly comprises an electrode system and an electronic circuit part. The deep side of the electrode system of the instrument is in a double-layer shielding focusing mode, and the detection depth is about 1.3-2.5 meters; the shallow lateral direction is in a single-layer shielding focusing mode, and the detection depth of the shallow lateral direction is 0.4-0.8 m. With the development of petroleum exploration and development, drilling wells such as highly-deviated well bores, small well bores, horizontal wells and the like are more and more, the mineralization of drilling mud is very different, and the conventional dual-lateral logging instrument has some inherent problems and cannot meet the requirements of geologists.
At present, phi 89 series of dual laterolog instruments are mostly used, and a small part of phi 70 series of dual laterolog instruments are also used; in recent years, an over-drill type dual laterolog instrument is proposed, the minimum instrument outer diameter of which is phi 56.7mm, the dual laterolog instrument needs to lift out a drill bit and a drill rod, then a special drill rod provided with a logging instrument is put down, and after the special drill rod is put down to the bottom of a well, the instrument is pushed out to start logging.
However, the above dual laterolog instruments all have the disadvantages of low logging efficiency, lagging logging operation, etc. With the rapid development of the petroleum exploration logging technology, the logging operation strength is urgently required to be reduced, and the logging timeliness is improved.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned problem that exists among the prior art, the utility model provides a high temperature resistant constant power bilateral logging instrument. The to-be-solved technical problem of the utility model is realized through following technical scheme:
the utility model provides a high temperature resistant constant power double lateral logging instrument, which comprises an electronic instrument short section and an electrode system short section, wherein,
the electronic instrument short joint comprises a first pressure-bearing outer protection pipe and an electronic instrument arranged in the first pressure-bearing outer protection pipe;
the electrode system short section comprises a second upper pressure-bearing insulating outer protective pipe, a second lower pressure-bearing insulating outer protective pipe and a mandrel arranged in the second upper pressure-bearing insulating outer protective pipe and the second lower pressure-bearing insulating outer protective pipe, a plurality of electrode rings are sleeved on the mandrel, insulating sleeves are arranged between the adjacent electrode rings, and the electrode rings and the insulating sleeves are positioned between the second upper pressure-bearing insulating outer protective pipe and the second lower pressure-bearing insulating outer protective pipe;
the lower end of the first pressure-bearing outer protection pipe is connected to the upper end of the second upper pressure-bearing insulating outer protection pipe, and the electrode rings are connected to the electronic instrument.
In an embodiment of the present invention, the outer diameters of the first pressure-bearing outer protection pipe, the second pressure-bearing insulating outer protection pipe and the plurality of electrode rings are 43 mm.
In one embodiment of the present invention, the electronic device comprises a first constant voltage power supply circuit board, a second constant voltage power supply circuit board, a control acquisition circuit board, a logic control circuit board, a voltage signal detection circuit board, a current signal detection circuit board, a deep lateral screen flow driving circuit board, a shallow lateral screen flow driving circuit board, a main monitoring circuit board, an auxiliary monitoring circuit board, a scale zero-setting circuit board and a main current preamplifier circuit board, wherein,
the first voltage-stabilizing power supply circuit board is used for isolating and converting a 100-130V direct-current power supply into a +/-12V voltage-stabilizing direct-current power supply and respectively supplying the +/-12V voltage-stabilizing direct-current power supply to the control acquisition circuit board, the logic control circuit board, the voltage signal detection circuit board, the current signal detection circuit board, the deep lateral screen current driving circuit board, the shallow lateral screen current driving circuit board, the main monitoring circuit board, the auxiliary monitoring circuit board, the scale zero alignment circuit board and the main current preamplification circuit board;
the second stabilized voltage supply circuit board is used for isolating and converting 100-130V direct current power supplies into three groups of stabilized voltage direct current power supplies and respectively supplying the three groups of stabilized voltage direct current power supplies to the control acquisition circuit board, the logic control circuit board and the scale zero alignment circuit board;
the control acquisition circuit board is used for converting a direct current analog voltage signal from the voltage signal detection circuit board and a direct current analog current signal from the current signal detection circuit board into digital signals and generating a deep lateral power control signal and a shallow lateral power control signal according to the digital signals;
the logic control circuit board is used for generating a deep lateral logic square wave and a shallow lateral logic square wave, and chopping the deep lateral logic square wave and the shallow lateral logic square wave respectively to form a deep lateral power control signal and a shallow lateral power control signal;
the voltage signal detection circuit board is used for converting alternating current voltage signals of the deep side main current and the shallow side main current into direct current analog voltage signals respectively;
the current signal detection circuit board is used for converting alternating current signals of the deep side main current and the shallow side main current into direct current analog current signals;
the deep lateral screen flow driving circuit board is used for receiving a deep lateral power control signal from the logic control circuit board, amplifying and shaping the deep lateral power control signal into a deep lateral current source;
the shallow lateral screen flow driving circuit board is used for receiving a shallow lateral power control signal from the logic control circuit board, amplifying and shaping the shallow lateral power control signal into a shallow lateral current source;
the main monitoring circuit board is used for receiving the main current difference zero balance signals from the deep side and the shallow side of the main current preamplification circuit board, respectively carrying out band-pass amplification, and realizing compensation and balance of the main current supply current;
the auxiliary monitoring circuit board is used for receiving a deep lateral shielding current difference zero balance signal from the electrode ring, and compensation and balance of main current supply current are realized through band-pass amplification;
the scale zero-alignment circuit board comprises a control relay and a scale resistor, is used for switching the states of the scale and the logging, provides a standard resistor for the scale state and changes the connection method of part of the circuit board;
the main current preamplification circuit board is used for coupling and amplifying main current difference zero signals from the deep side and the shallow side of the electrode ring and sending the signals to the main monitoring circuit board.
In an embodiment of the present invention, the electronic device further includes:
the voltage signal coupling input transformer is connected between the voltage signal detection circuit board and the scale zero alignment circuit board and is used for coupling and amplifying voltage signals of main current in the deep and shallow lateral directions;
the current signal coupling input transformer is connected between the current signal detection circuit board and the scale zero alignment circuit board and is used for coupling and amplifying current signals of main current in the deep and shallow lateral directions;
the deep lateral screen flow output transformer is connected between the deep lateral screen flow driving circuit board and the scale zero-setting circuit board and is used for carrying out power coupling output on a deep lateral screen flow source signal;
the shallow lateral screen flow output transformer is connected between the shallow lateral screen flow driving circuit board and the scale zero alignment circuit board and is used for carrying out power coupling output on a shallow lateral screen flow source signal;
the main monitoring output transformer is connected between the main monitoring circuit board and the scale zero alignment circuit board and is used for coupling and outputting monitoring signals in the deep and shallow lateral directions;
the auxiliary monitoring output transformer is connected between the auxiliary monitoring circuit board and the scale zero alignment circuit board and is used for coupling and outputting auxiliary monitoring signals in the deep lateral direction;
and the main current pre-coupling amplification transformer is connected between the main current pre-amplification circuit board and the electrode ring and is used for coupling, amplifying and outputting the differential zero balance signals in the deep and shallow lateral directions.
In an embodiment of the present invention, the electronic instrument sub is divided into an electronic instrument sub a section, an electronic instrument sub B section, and an electronic instrument sub C section along an axial direction, wherein the first regulated power supply circuit board, the second regulated power supply circuit board, the control acquisition circuit board, and the logic control circuit board are disposed in the electronic instrument sub a section;
the voltage signal detection circuit board, the current signal detection circuit board, the deep lateral screen flow driving circuit board, the shallow lateral screen flow driving circuit board, the voltage signal coupling input transformer, the current signal coupling input transformer, the deep lateral screen flow output transformer and the shallow lateral screen flow output transformer are arranged at a section B of the electronic instrument short section;
the main monitoring circuit board, the auxiliary monitoring circuit board, the scale zero alignment circuit board, the main current preamplification circuit board, the main monitoring output transformer, the auxiliary monitoring output transformer and the main current preamplification transformer are arranged at the C section of the electronic instrument short section.
In an embodiment of the present invention, the mandrel is provided with an electrode ring a2, an electrode ring a1, an electrode ring a1, an electrode ring M2, an electrode ring M1, an electrode ring a0, an electrode ring M1 ', an electrode ring M2 ', an electrode ring a1 ', an electrode ring a1 ' and an electrode ring a2 ' at intervals in sequence, wherein,
the electrode ring A2, the electrode ring A1, the electrode ring A1, the electrode ring A0 and the electrode ring A2' are respectively connected to different ports of the calibration zero-alignment circuit board;
the electrode ring M2, the electrode ring M1, the electrode ring M1 'and the electrode ring M2' are connected to different ports of the main current pre-amplification circuit board respectively;
the electrode ring a1 'is connected to the electrode ring a1, and the electrode ring a 1' is connected to the electrode ring a 1.
The utility model discloses an in one embodiment, the upper end of electron appearance nipple joint is provided with the first cap that protects on, and the lower extreme is provided with the first cap that protects down, the upper end of electrode system nipple joint is provided with the second and protects the cap on, and the lower extreme is provided with the second and protects the cap down.
In an embodiment of the utility model, first constant voltage power supply circuit board, second constant voltage power supply circuit board, control acquisition circuit board, logic control circuit board, voltage signal detection circuit board, current signal detection circuit board, dark side direction screen flow drive circuit board, shallow side direction screen flow drive circuit board, main monitoring circuit board, supplementary monitoring circuit board, scale zero circuit board and main current preamplification circuit board are fixed through the screw respectively the inside of first pressure-bearing outer pillar, and encapsulate through the encapsulating mode.
In an embodiment of the present invention, the mandrel has a through hole formed therein for passing through a wire.
In one embodiment of the present invention, the mandrel and the electrode ring are made of a titanium steel material, and the insulating sleeve is made of a PEEK material.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. the utility model discloses a high temperature resistant constant power two laterolog equipment's external diameter is less, can leave in the drilling rod in advance, and after the well completion is bored, pump the instrument out the drill bit centre bore through the mud, and the limit is carried the drilling rod and is just logged well, effectively improves logging efficiency.
2. The electronic instrument circuit of the high-temperature-resistant constant-power dual laterolog instrument is divided into three sections, and each section is sealed and fixed by high-temperature-resistant silica gel, so that the effects of rotation prevention, shock resistance, shock absorption and the like are effectively achieved.
3. The utility model discloses a components and parts that high temperature resistant constant power bilateral logging instrument's circuit board adopted are mostly for high temperature resistant table subsides type, and whole temperature resistant index can reach 175 ℃.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of a high-temperature-resistant constant-power dual laterolog instrument according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an electronic instrument short joint provided by an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an electrode system short section provided by an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a high-temperature-resistant constant-power dual laterolog instrument according to an embodiment of the present invention.
Detailed Description
In order to further explain the technical means and effects of the present invention, the following description is combined with the drawings and the detailed description of the preferred embodiments to explain the high temperature resistant constant power dual laterolog equipment.
The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings. The technical means and effects of the present invention to achieve the predetermined objects can be more deeply and specifically understood through the description of the specific embodiments, however, the attached drawings are only for reference and description and are not intended to limit the technical solution of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or device that comprises a list of elements does not include only those elements but may include other elements not expressly listed. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of additional like elements in the article or device comprising the element.
Example one
Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of a high temperature resistant constant power dual laterolog instrument provided in an embodiment of the present invention, and fig. 2 is a schematic structural diagram of an electronic instrument pup joint provided in an embodiment of the present invention; fig. 3 is a schematic structural diagram of an electrode system short section provided by the embodiment of the utility model. As shown in the figure, the high-temperature-resistant constant-power dual laterolog instrument of the embodiment comprises an electronic instrument short section 1 and an electrode system short section 2, wherein the electronic instrument short section 1 comprises a first pressure-bearing outer protection pipe 11 and an electronic instrument 12 arranged inside the first pressure-bearing outer protection pipe 11; the electrode system short section 2 comprises a second upper pressure-bearing insulating outer protective pipe 21, a second lower pressure-bearing insulating outer protective pipe 22 and a mandrel 23 arranged inside the second upper pressure-bearing insulating outer protective pipe 21 and the second lower pressure-bearing insulating outer protective pipe 22, a plurality of electrode rings are sleeved on the mandrel 23, insulating sleeves 24 are arranged between adjacent electrode rings, and the electrode rings and the insulating sleeves 24 are positioned between the second upper pressure-bearing outer protective pipe 21 and the second lower pressure-bearing outer protective pipe 22; the lower end of the first pressure-bearing outer protection pipe 11 is connected to the upper end of the second upper pressure-bearing outer protection pipe 21, and the plurality of electrode rings are connected to the electronic instrument 12.
Further, the outer diameters of the first pressure-bearing outer protection pipe 11, the second upper pressure-bearing insulating outer protection pipe 21, the second lower pressure-bearing insulating outer protection pipe 22 and the plurality of electrode rings are all 43 mm. Because the outer diameter of the high-temperature-resistant constant-power dual lateral logger is small, the logger can be stored in a drill rod in advance, after drilling and completion, the logger is pumped out of a drill bit center hole through mud, logging is facilitated while the drill rod is lifted, and logging efficiency is effectively improved.
Further, please refer to fig. 4, fig. 4 is a schematic diagram of a circuit board of a high temperature resistant constant power dual laterolog instrument according to an embodiment of the present invention. The electronic instrument 12 of this embodiment includes a first regulated power supply circuit board AP01, a second regulated power supply circuit board AP02, a control acquisition circuit board AP03, a logic control circuit board AP04, a voltage signal detection circuit board AP05, a current signal detection circuit board AP06, a deep side screen current driving circuit board AP07, a shallow side screen current driving circuit board AP08, a main monitoring circuit board AP09, an auxiliary monitoring circuit board AP10, a scale zero-alignment circuit board AP11, a main current preamplification circuit board AP12, a voltage signal coupling input transformer T1, a current signal coupling input transformer T2, a deep side screen current output transformer T3, a shallow side screen current output transformer T4, a main monitoring output transformer T5, an auxiliary monitoring output transformer T6, and a main current preamplification transformer T7.
The first voltage-stabilizing power supply circuit board AP01 is a 175 ℃ high-temperature resistant switch conversion power supply circuit board, can isolate and convert 100-130V direct current power supply provided by a cable core into +/-12V voltage-stabilizing direct current working power supply, and respectively provides +/-12V voltage-stabilizing direct current power supply for the control acquisition circuit board AP03, the logic control circuit board AP04, the voltage signal detection circuit board AP05, the current signal detection circuit board AP06, the deep side direction screen current driving circuit board AP07, the shallow side direction screen current driving circuit board AP08, the main monitoring circuit board AP09, the auxiliary monitoring circuit board AP10 and the main current preamplification circuit board AP12, and only provides +12V voltage-stabilizing direct current power supply for the scale zero circuit board AP 11.
The second voltage-stabilizing power supply circuit board AP02 is a 175 ℃ high-temperature resistant switch conversion power supply circuit board, can isolate and convert 100-130V direct current power supply provided by the cable core into three groups of voltage-stabilizing direct current power supplies, and respectively provides the three groups of voltage-stabilizing direct current power supplies to the control acquisition circuit board AP03, the logic control circuit board AP04 and the scale zero-alignment circuit board AP 11. Specifically, the method comprises the following steps: a) the digital logic power supply +5VD is adopted, the public end is digital DGND, and the digital logic power supply +5VD is provided for the control acquisition circuit board AP03 and the logic control circuit board AP 04; b) the CAN bus direct current power supply +5VC is provided for the logic control circuit board AP04 by the common terminal being a CAN bus ground CGND; c) the relay supplies +24V, and the public end is digital DGND and supplies power to the relay of the scale zero-alignment circuit board AP 11.
The control acquisition circuit board AP03 can convert the dc analog voltage signal from the voltage signal detection circuit board AP05 and the dc analog current signal from the current signal detection circuit board AP06 into digital signals, and generate a deep lateral power control signal and a shallow lateral power control signal according to the digital signals. Specifically, the control acquisition circuit board AP03 performs digital acquisition processing, real-time processing, operation and storage on analog electrical signals acquired by the logging tool, and can receive instructions and send control commands.
The logic control circuit board AP04 is capable of generating a deep lateral logic square wave and a shallow lateral logic square wave, and chopping the deep lateral logic square wave and the shallow lateral logic square wave to form a deep lateral power control signal and a shallow lateral power control signal, respectively. Specifically, the logic control circuit board AP04 generates a logic square wave in the deep and shallow lateral directions, performs chopping conversion, adjusts the levels of the power control signals in the deep and shallow lateral directions transmitted from the control acquisition circuit board AP03, and then transmits the levels to the deep lateral screen flow driving circuit board AP07 and the shallow lateral screen flow driving circuit board AP08, respectively; meanwhile, the Controller Area Network (CAN) bus CAN be driven to receive commands and transmit data.
The voltage signal detection circuit board AP05 can convert the alternating current voltage signal of the deep and shallow side main current into a direct current analog voltage signal. Specifically, the voltage signal detection circuit board AP05 can convert the ac voltage signals of the main current in the deep and shallow lateral directions, which are sent from the main current pre-coupling amplification transformer T7, into dc analog signals through the band-pass separation amplification circuit, the phase-sensitive detection circuit, and the low-pass shaping circuit, and send the dc analog signals to the control acquisition circuit board AP 03.
The current signal detection circuit board AP06 can convert the alternating current signals of the deep and shallow side main currents into direct current analog current signals. Specifically, the current signal detection circuit board AP06 converts the ac current signals of the main current in the deep and shallow lateral directions sent from the main current pre-coupling amplification transformer T7 into dc analog signals through the band-pass separation amplification circuit, the phase-sensitive detection circuit and the low-pass shaping circuit, and sends the dc analog signals to the control acquisition circuit board AP 03.
The deep lateral screen current driver board AP07 is capable of receiving deep lateral power control signals from the logic control board AP04, amplifying and shaping into deep lateral current sources. Specifically, the deep side screen driver board AP07 receives a deep side power control signal (DPL) from the logic control board AP04, amplifies and shapes the DPL into a sine wave, and then power amplifies and outputs the sine wave to the deep side power output transformer.
Shallow lateral screen driver board AP08 is capable of receiving shallow lateral power control signals from logic control board AP04, amplifying and shaping into shallow lateral current sources. Specifically, a shallow side power control Signal (SPL) is received from the logic control circuit board AP04, amplified and shaped into a sine wave, and then power amplified and output to a shallow side power output transformer.
The main monitoring circuit board AP09 can receive the zero balance signals of the main current difference from the deep side and the shallow side of the main current preamplification circuit board AP12, and respectively carry out band-pass amplification to realize compensation and balance of the main current supply current. Specifically, deep and shallow side main current difference zero balance signals from the main current preamplification circuit board AP12 are received, respectively subjected to band-pass amplification, and then output to the main monitoring coupling transformer.
The auxiliary monitoring circuit board AP10 can receive a deep lateral shielding current difference zero balance signal from the electrode ring, and compensation and balance of main current supply current are realized through band-pass amplification. Specifically, zero balance signals are received from balance electrode a1 and shield electrode a2, subjected to bandpass amplification, and then output to the auxiliary monitoring coupling transformer.
The scale zero-alignment circuit board AP11 comprises a control relay and a scale resistor, can switch the states of the scale and the logging and provide a standard resistor for the scale state, and changes the connection of partial circuit boards. Specifically, a control command of the relay is received, scale points (low scale, high scale and well logging) of the instrument are converted, the ground processing system carries out two-point scale on data measured by the instrument in real time, and deep and shallow lateral resistivity curves are calculated.
The main current preamplification circuit board AP12 can couple and amplify the deep and shallow lateral main current difference zero signals from the electrode ring and send the signals to the main monitoring circuit board AP 09. Specifically, the deep and shallow side main current difference zero signals to the balance electrodes (M1, M2, M1 'and M2') are amplified and sent to the input end of the main monitoring circuit board.
Further, a voltage signal coupling input transformer T1 is connected between the voltage signal detection circuit board AP05 and the scale zero-setting circuit board AP11, and is used for coupling and amplifying voltage signals of the deep and shallow side main currents; the current signal coupling input transformer T2 is connected between the current signal detection circuit board AP06 and the scale zero-setting circuit board AP11 and is used for coupling and amplifying current signals of main current at the deep side and the shallow side; the deep lateral screen flow output transformer T3 is connected between a deep lateral screen flow driving circuit board AP07 and a scale zero-setting circuit board AP11 and is used for carrying out power coupling output on a deep lateral screen flow source signal; the shallow lateral screen flow output transformer T4 is connected between the shallow lateral screen flow driving circuit board AP08 and the scale zero-setting circuit board AP11 and is used for carrying out power coupling output on a shallow lateral screen flow source signal; the main monitoring output transformer T5 is connected between the main monitoring circuit board AP09 and the scale zero-setting circuit board AP11 and is used for coupling and outputting monitoring signals in deep and shallow lateral directions; the auxiliary monitoring output transformer T6 is connected between the auxiliary monitoring circuit board AP10 and the scale zero-setting circuit board AP11 and is used for coupling and outputting auxiliary monitoring signals in the deep lateral direction; and the main current pre-coupling amplifying transformer T7 is connected between the main current pre-amplifying circuit board AP12 and the electrode ring and is used for coupling, amplifying and outputting the differential zero balance signals in the deep and shallow lateral directions.
Further, the electronic instrument sub 1 is divided into an electronic instrument sub a section, an electronic instrument sub B section and an electronic instrument sub C section along the axial direction, wherein the first regulated power supply circuit board AP01, the second regulated power supply circuit board AP02, the control acquisition circuit board AP03 and the logic control circuit board AP04 are arranged at the electronic instrument sub a section; the voltage signal detection circuit board AP05, the current signal detection circuit board AP06, the deep lateral screen current driving circuit board AP07, the shallow lateral screen current driving circuit board AP08, the voltage signal coupling input transformer T1, the current signal coupling input transformer T2, the deep lateral screen current output transformer T3 and the shallow lateral screen current output transformer T4 are arranged at a section B of the electronic instrument sub; the main monitoring circuit board AP09, the auxiliary monitoring circuit board AP10, the scale zero alignment circuit board AP11, the main current preamplification circuit board AP12, the main monitoring output transformer T5, the auxiliary monitoring output transformer T6 and the main current preamplification transformer T7 are arranged at the section C of the electronic instrument short section.
Further, an electrode ring a2, an electrode ring a1, an electrode ring a1, an electrode ring M2, an electrode ring M1, an electrode ring a0, an electrode ring M1 ', an electrode ring M2 ', an electrode ring a1 ', an electrode ring a1 ' and an electrode ring a2 ' are sequentially arranged on the mandrel 23 at intervals, wherein,
the electrode ring A2, the electrode ring A1, the electrode ring A1, the electrode ring A0 and the electrode ring A2' are respectively connected to different ports of the calibration zero-alignment circuit board AP 11;
the electrode ring M2, the electrode ring M1, the electrode ring M1 'and the electrode ring M2' are connected to different ports of the main current pre-amplification circuit board AP12, respectively;
the electrode ring a1 'is connected to the electrode ring a1, and the electrode ring a 1' is connected to the electrode ring a 1.
Further, the upper end of the electronic instrument pup joint 1 is provided with a first upper protective cap 13, the lower end of the electronic instrument pup joint is provided with a first lower protective cap 17, the upper end of the electrode system pup joint 2 is provided with a second upper protective cap 20, and the lower end of the electrode system pup joint is provided with a second lower protective cap 29.
Furthermore, the upper end of the electronic instrument pup joint 1 is also provided with a ten-core pressure-bearing socket 14 (a circular connector) and a first upper connector 15, wherein the ten-core pressure-bearing socket 14 is used for connecting a power supply and a signal channel connecting wire and can bear certain pressure, and the lower end of the electronic instrument pup joint 1 is also provided with a nineteenth-core pressure-bearing plug 16. The upper end of the electrode system short section 2 is also provided with a nineteen-core pressure-bearing socket 25 and a second upper connector 26, and the lower end of the electrode system short section 2 is also provided with a ten-core pressure-bearing socket 27 and a second lower connector 28.
Further, a first voltage-stabilizing power supply circuit board AP01, a second voltage-stabilizing power supply circuit board AP02, a control acquisition circuit board AP03, a logic control circuit board AP04, a voltage signal detection circuit board AP05, a current signal detection circuit board AP06, a deep lateral screen flow driving circuit board AP07, a shallow lateral screen flow driving circuit board AP08, a main monitoring circuit board AP09, an auxiliary monitoring circuit board AP10, a scale zero-alignment circuit board AP11 and a main current pre-amplification circuit board AP12 are all fixed inside the first pressure-bearing outer protection pipe 11 through screws, and are packaged in a glue filling manner.
Further, a through hole (not shown in the drawings) is formed inside the mandrel 23 for penetrating a wire.
Further, the mandrel 23 and the electrode ring are both made of a titanium steel material, and the insulating sleeve 24 is made of a PEEK material.
The dual-lateral electronic instrument of the embodiment adopts surface-mounted high-temperature devices, miniaturized high-temperature annular iron core transformers, power devices with higher integration level, small high-temperature relays and the like, the circuit is divided into three sections, and each section is sealed and fixed by high-temperature-resistant silica gel, so that the dual-lateral electronic instrument effectively plays roles of rotation prevention, shock resistance, shock absorption and the like; the electrode system comprises a titanium steel core shaft, a plurality of titanium steel electrode rings, a PEEK insulator, a pressure-bearing connector, a high-temperature lead, other machined parts and the like.
The working principle of the high-temperature-resistant constant-power dual laterolog instrument of the embodiment is as follows:
when the instrument starts to work, the logic control circuit board AP04 generates deep lateral logic square waves (35Hz, QD) and shallow lateral logic square waves (280Hz, QS), and the deep lateral power control level and the shallow lateral power control level transmitted by the control acquisition circuit board AP03 are chopped respectively through the two groups of logic square waves, so that the power control level is output as the power control square waves (the deep lateral power control output DPL and the shallow lateral power control output SPL). Wherein, the DPL is sent to a deep side screen current driving circuit board AP07, and is subjected to 35Hz band-pass shaping and power amplification, and a deep side screen current (DPout) is output by a deep side screen current output transformer T3; SPL is sent to a shallow side screen current driving circuit board AP08, and is subjected to 280Hz band-pass shaping and power amplification, and shallow side screen current (SPout) is output by a shallow side screen current output transformer T4. Then the deep and shallow side main current difference zero signals at the balance electrodes (M1, M2, M1 'and M2') are coupled and amplified through a main current pre-coupling amplifying transformer T7 and are sent to an input end AP09 board of a main monitoring circuit board, the board frequency-selecting band-pass amplifies the deep and shallow side difference zero signals, and then outputs Zout through a main monitoring output transformer T5, meanwhile, the balance electrode A1 and the shielding electrode A2 deep side shielding current difference zero balance signals are subjected to deep side frequency-selecting band-pass amplification, and finally Fout is output through an auxiliary monitoring coupling transformer T6. The two groups of output combinations are loaded on a stratum load, so that main currents in deep and shallow lateral directions are formed, then the main currents are balanced with screen current sources (DPout and SPout) in the deep and shallow lateral directions, new difference zero balance signals, new main currents, new screen current sources, new main currents and new screen current sources are generated, the new main currents and the new screen current sources are superposed to output new difference zero balance signals, new main currents, new screen current sources and new difference zero balance signals, and the like. Meanwhile, voltage signals (VD, VS) of the main current of the deep side and the shallow side are received and converted in real time through a voltage coupling amplifying transformer T1 and a voltage signal detection circuit board AP 05; the current signals (ID, IS) converting the deep and shallow side main currents are received in real time by the current coupling amplifying transformer T2 and the current signal detection circuit board AP 06.
The calibration zero-point circuit board AP11 is set for setting two-point resistivity calibration when calculating the deep and shallow lateral resistivity curves, the control command is sent by the control acquisition circuit board AP03, and two-point calibration of 0 omega m and 31.62 omega m are generally used.
The high-temperature-resistant constant-power dual laterolog instrument and a remote transmission instrument (data transmission short section) of the embodiment CAN exchange data through a CAN bus, and a receiving and sending driving circuit board of the CAN bus is designed on a logic control circuit board AP 04.
The high-temperature-resistant constant-power dual laterolog instrument has the advantages that the outer diameter is small, the instrument can be stored in a drill rod in advance, after drilling and completion are conducted, the instrument is pumped out of a center hole of a drill bit through slurry, logging is conducted while the drill rod is lifted, and logging efficiency is effectively improved. In addition, the electronic instrument circuit board of the high-temperature-resistant constant-power dual laterolog instrument is divided into three sections, and each section is sealed and fixed by high-temperature-resistant silica gel, so that the effects of rotation prevention, shock resistance, shock absorption and the like are effectively achieved.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (10)
1. A high-temperature-resistant constant-power dual laterolog instrument is characterized by comprising an electronic instrument short section (1) and an electrode system short section (2),
the electronic instrument short joint (1) comprises a first pressure-bearing outer protective pipe (11) and an electronic instrument (12) arranged inside the first pressure-bearing outer protective pipe (11);
the electrode system short section (2) comprises a second upper pressure-bearing insulating outer protective pipe (21), a second lower pressure-bearing insulating outer protective pipe (22) and a mandrel (23) arranged inside the second upper pressure-bearing insulating outer protective pipe (21) and the second lower pressure-bearing insulating outer protective pipe (22), a plurality of electrode rings are sleeved on the mandrel (23), insulating sleeves (24) are arranged between adjacent electrode rings, and the plurality of electrode rings and the plurality of insulating sleeves (24) are positioned between the second upper pressure-bearing insulating outer protective pipe (21) and the second lower pressure-bearing insulating outer protective pipe (22);
the lower end of the first pressure-bearing outer protection pipe (11) is connected to the upper end of the second upper pressure-bearing insulating outer protection pipe (21), and the electrode rings are connected to the electronic instrument (12).
2. The high temperature resistant constant power dual laterolog instrument of claim 1, wherein the outer diameters of the first pressure bearing outer protective pipe (11), the second upper pressure bearing insulating outer protective pipe (21), the second lower pressure bearing insulating outer protective pipe (22) and the plurality of electrode rings are all 43 mm.
3. The high-temperature-resistant constant-power dual laterolog instrument according to claim 1, wherein the electronic instrument (12) comprises a first stabilized voltage power supply circuit board (AP01), a second stabilized voltage power supply circuit board (AP02), a control acquisition circuit board (AP03), a logic control circuit board (AP04), a voltage signal detection circuit board (AP05), a current signal detection circuit board (AP06), a deep lateral screen flow driving circuit board (AP07), a shallow lateral screen flow driving circuit board (AP08), a main monitoring circuit board (AP09), an auxiliary monitoring circuit board (AP10), a scale zero alignment circuit board (AP11) and a main current preamplification circuit board (AP12) which are connected with each other.
4. The high temperature resistant constant power dual laterolog tool of claim 3, wherein the electronics (12) further comprises:
a voltage signal coupling input transformer (T1) connected between the voltage signal detection circuit board (AP05) and the scale zero-alignment circuit board (AP 11);
a current signal coupling input transformer (T2) connected between the current signal detection circuit board (AP06) and the scale zero-setting circuit board (AP 11);
a deep lateral screen output transformer (T3) connected between the deep lateral screen drive circuit board (AP07) and the scale zero-alignment circuit board (AP 11);
a shallow lateral screen output transformer (T4) connected between the shallow lateral screen drive circuit board (AP08) and the scale zero-alignment circuit board (AP 11);
a main monitoring output transformer (T5) connected between the main monitoring circuit board (AP09) and the scale zero-alignment circuit board (AP 11);
an auxiliary monitoring output transformer (T6) connected between the auxiliary monitoring circuit board (AP10) and the scale zero-alignment circuit board (AP 11);
a main current pre-coupling amplifying transformer (T7) connected between the main current pre-amplifying circuit board (AP12) and the electrode ring.
5. The high-temperature-resistant constant-power dual laterolog instrument according to claim 4, wherein the electronics sub (1) is divided into an electronics sub A section (A), an electronics sub B section (B) and an electronics sub C section (C) along an axial direction, wherein the first regulated power supply circuit board (AP01), the second regulated power supply circuit board (AP02), the control acquisition circuit board (AP03) and the logic control circuit board (AP04) are disposed at the electronics sub A section (A);
the voltage signal detection circuit board (AP05), the current signal detection circuit board (AP06), the deep lateral screen flow driving circuit board (AP07), the shallow lateral screen flow driving circuit board (AP08), the voltage signal coupling input transformer (T1), the current signal coupling input transformer (T2), the deep lateral screen flow output transformer (T3) and the shallow lateral screen flow output transformer (T4) are arranged at a section B of the electronic instrument pup joint;
the main monitoring circuit board (AP09), supplementary monitoring circuit board (AP10), scale zero circuit board (AP11), main current preamplification circuit board (AP12), main control output transformer (T5), supplementary control output transformer (T6) and main current preamplification transformer (T7) set up and are in electron appearance nipple joint C section (C).
6. The high temperature resistant constant power dual laterolog tool of claim 3, wherein the mandrel (23) is sequentially spaced apart from electrode ring A2, electrode ring A1, electrode ring A1, electrode ring M2, electrode ring M1, electrode ring A0, electrode ring M1 ', electrode ring M2 ', electrode ring A1 ', electrode ring A1 ' and electrode ring A2 ', wherein,
the electrode ring A2, the electrode ring A1, the electrode ring A1, the electrode ring A0 and the electrode ring A2' are respectively connected to different ports of the calibration zero-alignment circuit board (AP 11);
the electrode ring M2, the electrode ring M1, the electrode ring M1 'and the electrode ring M2' are connected to different ports of the main current pre-amplification circuit board (AP12), respectively;
the electrode ring a1 'is connected to the electrode ring a1, and the electrode ring a 1' is connected to the electrode ring a 1.
7. The high-temperature-resistant constant-power dual laterolog instrument according to claim 1, wherein a first upper protective cap (13) is arranged at the upper end of the electronic instrument short section (1), a first lower protective cap (17) is arranged at the lower end of the electronic instrument short section, a second upper protective cap (20) is arranged at the upper end of the electrode system short section (2), and a second lower protective cap (29) is arranged at the lower end of the electrode system short section.
8. The high-temperature-resistant constant-power dual laterolog instrument according to claim 3, wherein a first stabilized voltage power supply circuit board (AP01), a second stabilized voltage power supply circuit board (AP02), a control acquisition circuit board (AP03), a logic control circuit board (AP04), a voltage signal detection circuit board (AP05), a current signal detection circuit board (AP06), a deep lateral screen flow driving circuit board (AP07), a shallow lateral screen flow driving circuit board (AP08), a main monitoring circuit board (AP09), an auxiliary monitoring circuit board (AP10), a scale zero alignment circuit board (AP11) and a main current preamplification circuit board (AP12) are respectively fixed inside the first outer protective pressure-bearing tube (11) through screws and are packaged in a glue filling manner.
9. The high temperature resistant constant power dual laterolog instrument of claim 1, wherein a via hole is opened inside the mandrel (23) for passing through a wire.
10. The high temperature resistant constant power dual laterolog instrument of any of claims 1 to 9, wherein the mandrel (23) and the electrode ring are both made of titanium steel material and the insulating sleeve (24) is made of PEEK material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020638158.2U CN212428807U (en) | 2020-04-24 | 2020-04-24 | High-temperature-resistant constant-power dual laterolog instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020638158.2U CN212428807U (en) | 2020-04-24 | 2020-04-24 | High-temperature-resistant constant-power dual laterolog instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212428807U true CN212428807U (en) | 2021-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020638158.2U Active CN212428807U (en) | 2020-04-24 | 2020-04-24 | High-temperature-resistant constant-power dual laterolog instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212428807U (en) |
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2020
- 2020-04-24 CN CN202020638158.2U patent/CN212428807U/en active Active
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