CN202788799U - Electronic circuit of dual laterolog instrument - Google Patents

Electronic circuit of dual laterolog instrument Download PDF

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Publication number
CN202788799U
CN202788799U CN201220429099.3U CN201220429099U CN202788799U CN 202788799 U CN202788799 U CN 202788799U CN 201220429099 U CN201220429099 U CN 201220429099U CN 202788799 U CN202788799 U CN 202788799U
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circuit
main electrode
current signal
electrode
control circuit
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邹岳元
裴建中
张勇
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CNPC Chuanqing Drilling Engineering Co Ltd
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CNPC Chuanqing Drilling Engineering Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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    • Y02A90/30—Assessment of water resources

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Abstract

本实用新型公开了一种双侧向测井仪电子线路，包括双侧向主电极、处理电路、测量前进行刻度处理的刻度电路和发射电流信号的发射电路，所述双侧向主电极包括上下两组独立的电极系，上电极系对应设置有用于控制电流聚焦的上处理电路，下电极系对应设置有用于控制电流聚焦的下处理电路。本实用新型发射的主电流在大井眼、高矿化度泥浆、高阻地层不易发散，与地面系统挂接的聚焦能力强，且能够在大井眼、高矿化度泥浆、高阻地层测出正确浅侧向电阻率。

The utility model discloses an electronic circuit of a double lateral logging instrument, which comprises a double lateral main electrode, a processing circuit, a scale circuit for performing scale processing before measurement, and a transmitting circuit for emitting current signals. The double lateral main electrode includes The upper and lower sets of independent electrode systems, the upper electrode system is correspondingly provided with an upper processing circuit for controlling current focusing, and the lower electrode system is correspondingly provided with a lower processing circuit for controlling current focusing. The main current emitted by the utility model is not easy to diverge in large boreholes, high salinity mud, and high resistivity formations, and has strong focusing ability when connected with the ground system, and can be detected in large boreholes, high salinity mud, and high resistance formations. Correct shallow lateral resistivity.

Description

The dual laterolog equipment electronic circuit
Technical field
The utility model relates to a kind of dual laterolog equipment, relates in particular to a kind of dual laterolog equipment electronic circuit, belongs to Oil/gas Well logging equipment technical field.
Background technology
The ECLIPS5700 ground system is one of widely used logging system of well logging field, and the domestic existing dual laterolog equipment supporting with it has constant-power dual side-direction well measuring equipment, asks merchant's formula dual laterolog equipment etc.
Such as publication number CN201606071U, open day is the disclosed a kind of constant power double-lateral logging instrument circuit of Chinese patent literature of 2010.10.13, this utility model is comprised of digital circuit and analog circuit, analog circuit comprises dark power control current source circuit, shallow power control current source circuit, main supervisory circuit, auxiliary supervisory circuit, tension measuring circuit, current measurement circuit, calibration circuit, and digital circuit comprises variable connector, programme-controlled gain, D/A converter, A/D converter, single-chip microcomputer, timer, digital control plate.
Such as the disclosed dual laterolog equipment of above-mentioned patent documentation, high-power power amplifier integrate circuit is all adopted in its dark, shallow lateral current source, and its carrying load ability is strengthened greatly.Adopt this kind method to be better than discussing the formula dual laterolog equipment, but also have following deficiency: its current focusing ability is still strong not, and when big hole, high-salinity mud, the well logging of high resistant stratum, principal current is easily dispersed, and measured shallow side direction resistivity is on the low side.
Summary of the invention
The purpose of this utility model is to overcome the problems referred to above that existing dual laterolog instrument circuit exists, a kind of dual laterolog equipment electronic circuit is provided, the principal current of the utility model emission is difficult for dispersing on big hole, high-salinity mud, high resistant stratum, the focusing power that articulates with ground system is strong, and can measure on big hole, high-salinity mud, high resistant stratum correct shallow side direction resistivity.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of dual laterolog equipment electronic circuit, it is characterized in that: comprise that bilateral carries out the calibration circuit of scale processing and the radiating circuit of emission current signal before main electrode, treatment circuit, measurement, described bilateral comprises up and down two groups of independently electrode systems to main electrode, the polar system correspondence that powers on is provided with the upper treatment circuit for the control current focusing, and the lower electrode correspondence is provided with the lower treatment circuit for the control current focusing.
Described radiating circuit comprises A0 control circuit and A0 power amplification circuit, A0 control circuit control A0 power amplification circuit is launched dark current signal and shallow current signal to the A0 polar ring of main electrode, shallow current signal is flowed through, and the A4+ from main electrode flows back to behind the stratum, and dark current signal is flowed back to by current loop B behind the stratum.
Described upper treatment circuit comprises pre-amplification circuit, upper main monitoring discharge circuit, A* control circuit, A4+ power amplification circuit, A3+ power amplification circuit, A3 control circuit and auxiliary monitoring discharge circuit; Potential difference between the M2+ of main electrode and the M1+ polar ring is amplified through upper pre-amplification circuit, again after upper main monitoring discharge circuit is processed, enter the A3 control circuit, the output signal control A3+ power amplification circuit of A3 control circuit, between the A3+ of main electrode and A4+ polar ring, apply trim voltage, shallow current signal homophase and equipotential that the current signal that flows out from the A3+ polar ring of main electrode and A0 polar ring from main electrode are flowed out; Potential difference between the M3+ of main electrode and the M1+ polar ring, amplify through upper pre-amplification circuit, again after upper main monitoring discharge circuit is processed, enter the A* control circuit, the output signal control A4+ power amplification circuit of A* control circuit, between the A4+ of main electrode polar ring and current loop B, apply trim voltage, make dark current signal homophase and the equipotential of current signal that the A4+ of main electrode flows out and main electrode A0 outflow; Potential difference between the A*+ of main electrode and the A4+ polar ring is after auxiliary monitoring discharge circuit is processed, enter the A3 control circuit, the output signal control A3+ power amplification circuit of A3 control circuit, between the A3+ of main electrode and A4+ polar ring, apply trim voltage, make dark current signal homophase and the equipotential of current signal that the A4+ polar ring of main electrode flows out and the A0 polar ring outflow of main electrode.
Described lower treatment circuit comprises lower pre-amplification circuit, lower main monitoring discharge circuit, A* control circuit, A4-power amplification circuit, A3-power amplification circuit, A3 control circuit and auxiliary monitoring discharge circuit; Potential difference between the M2-of main electrode and the M1-polar ring is amplified through lower pre-amplification circuit, again after lower main monitoring discharge circuit is processed, enter the A3 control circuit, the output signal control A3-power amplification circuit of A3 control circuit, between the A3-of main electrode and A4-polar ring, apply trim voltage, shallow current signal homophase and equipotential that the current signal that flows out from the A3-polar ring of main electrode and A0 polar ring from main electrode are flowed out; Potential difference between the M3-of main electrode and the M1-polar ring, amplify through lower pre-amplification circuit, again after lower main monitoring discharge circuit is processed, enter the A* control circuit, the output signal control A4-power amplification circuit of A* control circuit, between the A4-of main electrode polar ring and current loop, apply trim voltage, make dark current signal homophase and the equipotential of current signal that the A4-polar ring of main electrode flows out and the outflow of main electrode A0 polar ring; Potential difference between the A*-of main electrode and the A4-polar ring is after auxiliary monitoring discharge circuit is processed, enter the A3 control circuit, the output signal control A3-power amplification circuit of A3 control circuit, between the A3-of main electrode and A4-polar ring, apply trim voltage, make dark current signal homophase and the equipotential of current signal that the A4-polar ring of main electrode flows out and the A0 polar ring outflow of main electrode.
The current signal that the A0 of described main electrode flows out is sent into the stratum, and records by current measurement circuit.
Described calibration circuit is connected to the ground reference electrode, and the voltage between the M2-of main electrode and the ground reference electrode records by tension measuring circuit.
Employing the utility model has the advantage of:
One, in the utility model, described bilateral comprises up and down two groups of independently electrode systems to main electrode, the polar system correspondence that powers on is provided with the upper treatment circuit for the control current focusing, the lower electrode correspondence is provided with the lower treatment circuit for the control current focusing, bilateral to main electrode by up and down two groups independently electrode system form, therefore in the electronic circuit the inside two groups of independently power amplification circuits are arranged respectively, remove to control current focusing, the principal current of emission is at big hole, high-salinity mud, the high resistant stratum is difficult for dispersing, the focusing power that articulates with ground system is strong, and can be at big hole, high-salinity mud, correct shallow side direction resistivity is measured on the high resistant stratum.
Two, in the utility model, the current signal that the A3+ of main electrode flows out and shallow current signal homophase and equipotential that A0 from main electrode flows out make shallow current signal flow to the stratum from A0 to greatest extent, and flow back to from A4+, realize the measurement to shallow side direction resistivity.
Three, in the utility model, dark current signal homophase and equipotential that the current signal that the A4+ of main electrode flows out and A0 flow out make dark current signal flow to the stratum from A0 to greatest extent, are flowed back to by current loop B at last.
Four, in the utility model, shallow current signal homophase and equipotential that the current signal that flows out from the A3-of main electrode and the A0 from main electrode flow out, make shallow current signal flow to the stratum from A0 to greatest extent, and flow back to from A4-, realize the measurement to shallow side direction resistivity.
Five, in the utility model, dark current signal homophase and equipotential that the current signal that the A4-of main electrode flows out and the A0 of main electrode flow out make dark current signal flow to the stratum from A0 to greatest extent, are flowed back to by current loop B at last.
Six, the utlity model has separate up and down main monitoring discharge circuit, up and down separate auxiliary monitoring discharge circuit, separate high-power amplifying circuit, calibration circuit, current detection circuit and voltage detecting circuit up and down, can realize that the independent of power-on and power-off polar system focuses on.
Description of drawings
Fig. 1 is the utility model structural principle schematic diagram
Be labeled as among the figure: 1 is the A0 control circuit, and 2 is the A0 power amplification circuit, and 3 is upper pre-amplification circuit, 4 is upper main monitoring discharge circuit, and 5 is the A* control circuit, and 6 is the A4+ power amplification circuit, 7 is the A3+ power amplification circuit, and 8 is the A3 control circuit, and 9 are auxiliary monitoring discharge circuit, 10 is calibration circuit, and 11 is lower pre-amplification circuit, and 12 is lower main monitoring discharge circuit, 13 is the A4-power amplification circuit, 14 is the A3-power amplification circuit, and 15 is current measurement circuit, and 16 is tension measuring circuit.
The specific embodiment
The utility model comprises that bilateral carries out the calibration circuit of scale processing and the radiating circuit of emission current signal before main electrode, treatment circuit, measurement, described bilateral comprises up and down two groups of independently electrode systems to main electrode, the polar system correspondence that powers on is provided with the upper treatment circuit for the control current focusing, and the lower electrode correspondence is provided with the lower treatment circuit for the control current focusing.
Since bilateral to main electrode by up and down two groups independently electrode system form, therefore in the electronic circuit the inside two groups of independently power amplification circuits are arranged respectively, remove to control current focusing.The concrete processing mode of upper treatment circuit and the process of at first describing the first half describe.
By A0 control circuit among the figure 1 control A0 power amplification circuit 2 emission dark current signals (frequency 131.25Hz) and shallow current signal (frequency 1050Hz) the A0 polar ring to main electrode, wherein shallow current signal is flowed through, and the A4+ from main electrode flows back to behind the stratum, and dark current signal is flowed back to by current loop B behind the stratum.
If shallow current signal is dispersed from having after the A0 polar ring of main electrode flows out, M2+ of main electrode so, between the M1+ polar ring potential difference is arranged, this potential difference is amplified through upper pre-amplification circuit 3, again after upper main monitoring discharge circuit 4 is processed, enter A3 control circuit 8, its output signal is used for control A3+ power amplification circuit 7, between the A3+ of main electrode polar ring and A4+ polar ring, apply a trim voltage, so that shallow current signal homophase and equipotential that the current signal that flows out from the A3+ polar ring of main electrode and A0 polar ring from main electrode flow out, shallow like this current signal will be to greatest extent flows to the stratum from the A0 polar ring of main electrode, and flow back to from the A4+ polar ring of main electrode, realize measurement to shallow side direction resistivity with this;
In like manner, if dark current signal is dispersed from having after the A0 polar ring of main electrode flows out, between the M3+ of main electrode, the M1+ polar ring potential difference is arranged so, amplify through upper pre-amplification circuit 3, again after upper main monitoring discharge circuit 4 is processed, enter A* control circuit 5, its output signal is used for control A4+ power amplification circuit 6, so that dark current signal homophase and equipotential that the current signal that A4+ flows out and A0 flow out, so dark current signal will flow to the stratum from A0 to greatest extent, is flowed back to by current loop B at last; If between the A*+ of main electrode and A4+ polar ring, detect potential difference, this potential difference is after auxiliary monitoring discharge circuit 9 is processed, enter A3 control circuit 8, its output signal removes to control A3+ power amplification circuit 7, between the A3+ of main electrode and A4+ polar ring, apply a trim voltage, so that dark current signal homophase and equipotential that the A0 polar ring of the current signal that the A4+ polar ring of main electrode flows out and main electrode flows out, so dark current signal will be to greatest extent flows to the stratum from the A0 polar ring of main electrode, is flowed back to by current loop B at last.
Before measurement, carry out scale by 10 pairs of instruments of calibration circuit; In measuring process, measurement electric current I 0 is admitted to the stratum via the A0 polar ring of main electrode, is recorded by a current measurement circuit 15.Measuring voltage V0 takes from the voltage between M2-and the ground reference electrode, is recorded by a tension measuring circuit 16.
Following concrete processing mode and process to the latter half is described in detail:
If shallow current signal is dispersed from having after the A0 polar ring of main electrode flows out, M2-of main electrode so, between the M1-polar ring potential difference is arranged, this potential difference is amplified through lower pre-amplification circuit 11, again after lower main monitoring discharge circuit 12 is processed, enter A3 control circuit 8, its output signal transmits and is used for control A3-power amplification circuit 14, between the A3-of main electrode polar ring and A4-polar ring, apply a trim voltage, so that shallow current signal homophase and equipotential that the current signal that flows out from the A3-polar ring of main electrode and A0 polar ring from main electrode flow out, shallow like this current signal will be to greatest extent flows to the stratum from the A0 polar ring of main electrode, and flow back to from the A4-polar ring of main electrode, realize measurement to shallow side direction resistivity with this;
In like manner, if dark current signal is dispersed from having after the A0 polar ring of main electrode flows out, between the M3-of main electrode, the M1-polar ring potential difference is arranged so, amplify through lower pre-amplification circuit 11, again after lower main monitoring discharge circuit 12 is processed, enter A* control circuit 5, its output signal is used for control A4-power amplification circuit 13, so that dark current signal homophase and equipotential that the current signal that A4+ flows out and A0 flow out, so dark current signal will flow to the stratum from A0 to greatest extent, is flowed back to by current loop B at last; If between the A*-of main electrode and A4-polar ring, detect potential difference, this potential difference is after auxiliary monitoring discharge circuit 9 is processed, enter A3 control circuit 8, its output signal removes to control A3-power amplification circuit 14, between the A3-of main electrode and A4-polar ring, apply a trim voltage, so that dark current signal homophase and equipotential that the A0 polar ring of the current signal that the A4-polar ring of main electrode flows out and main electrode flows out, so dark current signal will be to greatest extent flows to the stratum from the A0 polar ring of main electrode, is flowed back to by current loop B at last.
Symbol in the utility model before the circuit mainly is in order to carry out corresponding introduction with the polar ring of main electrode, and the circuit of employing can be available circuit.
In the utility model, the described polar system that powers on is preferably, comprise A4+ electrode retaining collar, A*+ electrode retaining collar, A3+ electrode retaining collar, M3+ electrode retaining collar, M2+ electrode retaining collar and M1+ electrode retaining collar, be provided with insulation sleeve between M1+ electrode retaining collar and the principal current emission electrode ring, wherein, M1+ electrode retaining collar, M2+ electrode retaining collar, M3+ electrode retaining collar are depth side direction monitor electrode, the A3+ electrode retaining collar is depth side direction bucking electrode, the A4+ electrode retaining collar is for being used for the electrode retaining collar in dark side direction shielding and shallow lateral current loop, and the A*+ electrode retaining collar is dark side direction monitoring electrode.This is preferred but is not limited to this structure, also can adopt electrode system of the prior art.
In the utility model, described lower electrode is preferably, comprise A4-electrode retaining collar, A*-electrode retaining collar, A3-electrode retaining collar, M3-electrode retaining collar, M2-electrode retaining collar and M1-electrode retaining collar, be provided with insulation sleeve between M1-electrode retaining collar and the principal current emission electrode ring, wherein, M1-electrode retaining collar, M2-electrode retaining collar, M3-electrode retaining collar are depth side direction monitor electrode, the A3-electrode retaining collar is depth side direction bucking electrode, the A4-electrode retaining collar is for being used for the electrode retaining collar in dark side direction shielding and shallow lateral current loop, and the A*-electrode retaining collar is dark side direction monitoring electrode.This is preferred but is not limited to this structure, also can adopt electrode system of the prior art.

Claims (6)

1.一种双侧向测井仪电子线路，其特征在于：包括双侧向主电极、处理电路、测量前进行刻度处理的刻度电路（10）和发射电流信号的发射电路，所述双侧向主电极包括上下两组独立的电极系，上电极系对应设置有用于控制电流聚焦的上处理电路，下电极系对应设置有用于控制电流聚焦的下处理电路。 1. An electronic circuit of a double lateral logging instrument, characterized in that: it includes a double lateral main electrode, a processing circuit, a scale circuit (10) for performing scale processing before measurement, and a transmitting circuit for emitting current signals, the two sides The main electrode includes two sets of upper and lower independent electrode systems, the upper electrode system is correspondingly provided with an upper processing circuit for controlling current focusing, and the lower electrode system is correspondingly provided with a lower processing circuit for controlling current focusing. 2.根据权利要求1所述的双侧向测井仪电子线路，其特征在于：所述发射电路包括A0控制电路（1）和A0功率放大电路（2），A0控制电路（1）控制A0功率放大电路（2）发射深电流信号和浅电流信号至主电极的A0极环，浅电流信号流经地层后从主电极的A4+流回，深电流信号经地层后由电流回路（B）流回。 2. The electronic circuit of the dual laterolog tool according to claim 1, characterized in that: the transmitting circuit includes an A0 control circuit (1) and an A0 power amplifier circuit (2), and the A0 control circuit (1) controls the A0 The power amplifier circuit (2) transmits the deep current signal and shallow current signal to the A0 pole ring of the main electrode, the shallow current signal flows back from A4+ of the main electrode after passing through the formation, and the deep current signal flows through the current loop (B) after passing through the formation back. 3.根据权利要求1或2所述的双侧向测井仪电子线路，其特征在于：所述上处理电路包括上前置放大电路（3）、上主监控运放电路（4）、A*控制电路（5）、A4+功率放大电路（6）、A3+功率放大电路（7）、A3控制电路（8）和辅助监控运放电路（9）；主电极的M2+和M1+极环之间的电位差经上前置放大电路（3）放大，再经上主监控运放电路（4）处理后，进入A3控制电路（8），A3控制电路（8）的输出信号控制A3+功率放大电路（7），在主电极的A3+和A4+极环之间施加微调电压，使从主电极的A3+极环流出的电流信号与从主电极的A0极环流出的浅电流信号同相且等电位；主电极的M3+和M1+极环之间的电位差，经上前置放大电路放大（3），再经上主监控运放电路（4）处理后，进入A*控制电路（5），A*控制电路（5）的输出信号控制A4+功率放大电路（6），在主电极的A4+极环和电流回路（B）之间施加微调电压，使主电极的A4+流出的电流信号与主电极A0流出的深电流信号同相且等电位；主电极的 A*+与A4+极环之间的电位差经辅助监控运放电路（9）处理后，进入A3控制电路（8），A3控制电路（8）的输出信号控制A3+功率放大电路（7），在主电极的A3+和A4+极环之间施加微调电压，使主电极的A4+极环流出的电流信号与主电极的A0极环流出的深电流信号同相且等电位。 3. The electronic circuit of dual laterologging tool according to claim 1 or 2, characterized in that: the upper processing circuit includes an upper preamplifier circuit (3), an upper main monitoring operational amplifier circuit (4), A *Control circuit (5), A4+ power amplifier circuit (6), A3+ power amplifier circuit (7), A3 control circuit (8) and auxiliary monitoring operational amplifier circuit (9); between M2+ and M1+ polar rings of the main electrode The potential difference is amplified by the upper preamplifier circuit (3), and then processed by the upper main monitoring operational amplifier circuit (4), and then enters the A3 control circuit (8), and the output signal of the A3 control circuit (8) controls the A3+ power amplifier circuit ( 7), apply a fine-tuning voltage between the A3+ and A4+ pole rings of the main electrode, so that the current signal flowing out of the A3+ pole ring of the main electrode is in phase and equipotential with the shallow current signal flowing out of the A0 pole ring of the main electrode; the main electrode The potential difference between the M3+ and M1+ pole rings is amplified by the upper preamplifier circuit (3), and then processed by the upper main monitoring operational amplifier circuit (4), and then enters the A* control circuit (5), and the A* control circuit The output signal of (5) controls the A4+ power amplifier circuit (6), and applies a fine-tuning voltage between the A4+ pole ring of the main electrode and the current loop (B), so that the current signal flowing out of the A4+ of the main electrode is the same as the deep current signal flowing out of the main electrode A0 The current signals are in the same phase and equipotential; the potential difference between the A*+ and A4+ polar rings of the main electrode is processed by the auxiliary monitoring operational amplifier circuit (9), and then enters the A3 control circuit (8), and the output of the A3 control circuit (8) The signal controls the A3+ power amplifier circuit (7), and applies a fine-tuning voltage between the A3+ and A4+ pole rings of the main electrode, so that the current signal flowing out of the A4+ pole ring of the main electrode is in phase with the deep current signal flowing out of the A0 pole ring of the main electrode and Equipotential. 4.根据权利要求3所述的双侧向测井仪电子线路，其特征在于：所述下处理电路包括下前置放大电路（11）、下主监控运放电路（12）、A*控制电路（5）、A4-功率放大电路（13）、A3-功率放大电路（14）、A3控制电路（8）和辅助监控运放电路（9）；主电极的M2-和M1-极环之间的电位差经下前置放大电路（11）放大，再经下主监控运放电路（12）处理后，进入A3控制电路（8），A3控制电路（8）的输出信号控制A3-功率放大电路（14），在主电极的A3-和A4-极环之间施加微调电压，使从主电极的A3-极环流出的电流信号与从主电极的A0极环流出的浅电流信号同相且等电位；主电极的M3-和M1-极环之间的电位差，经下前置放大电路（11）放大，再经下主监控运放电路（12）处理后，进入A*控制电路（5），A*控制电路（5）的输出信号控制A4-功率放大电路（13），在主电极的A4-极环和电流回路（B）之间施加微调电压，使主电极的A4-极环流出的电流信号与主电极A0极环流出的深电流信号同相且等电位；主电极的 A*-与A4-极环之间的电位差经辅助监控运放电路（9）处理后，进入A3控制电路（8），A3控制电路（8）的输出信号控制A3-功率放大电路（14），在主电极的A3-和A4-极环之间施加微调电压，使主电极的A4-极环流出的电流信号与主电极的A0极环流出的深电流信号同相且等电位。 4. The electronic circuit of dual laterolog tool according to claim 3, characterized in that: the lower processing circuit includes a lower preamplifier circuit (11), a lower main monitoring operational amplifier circuit (12), an A* control circuit (5), A4-power amplifier circuit (13), A3-power amplifier circuit (14), A3 control circuit (8) and auxiliary monitoring operational amplifier circuit (9); between the M2- and M1-polar rings of the main electrode The potential difference between them is amplified by the lower preamplifier circuit (11), and then processed by the lower main monitoring operational amplifier circuit (12), and then enters the A3 control circuit (8), and the output signal of the A3 control circuit (8) controls the A3-power Amplifying circuit (14), applying a fine-tuning voltage between the A3- and A4-pole rings of the main electrode, so that the current signal flowing out of the A3-pole ring of the main electrode is in phase with the shallow current signal flowing out of the A0 pole ring of the main electrode And equal potential; the potential difference between the M3- and M1-polar rings of the main electrode is amplified by the lower preamplifier circuit (11), and then processed by the lower main monitoring operational amplifier circuit (12), and then enters the A* control circuit (5), the output signal of the A* control circuit (5) controls the A4- power amplifier circuit (13), and applies a fine-tuning voltage between the A4-polar ring of the main electrode and the current loop (B), so that the A4- of the main electrode The current signal flowing out of the pole ring is in phase with the deep current signal flowing out of the main electrode A0 pole ring and is at the same potential; the potential difference between the A*- and A4- pole rings of the main electrode is processed by the auxiliary monitoring operational amplifier circuit (9), Entering the A3 control circuit (8), the output signal of the A3 control circuit (8) controls the A3- power amplifier circuit (14), and applies a fine-tuning voltage between the A3- and A4- pole rings of the main electrode, so that the A4- of the main electrode The current signal flowing out of the pole ring is in phase and at the same potential as the deep current signal flowing out of the A0 pole ring of the main electrode. 5.根据权利要求1、2或4所述的双侧向测井仪电子线路，其特征在于：所述主电极的A0极环流出的电流信号送入地层，且通过电流测量电路（15）测得。 5. The electronic circuit of dual laterolog tool according to claim 1, 2 or 4, characterized in that: the current signal flowing out of the A0 pole ring of the main electrode is sent into the formation, and passed through the current measurement circuit (15) Measured. 6.根据权利要求5所述的双侧向测井仪电子线路，其特征在于：所述刻度电路（10）连接到地面参考电极，主电极的M2-极环与地面参考电极之间的电压，通过电压测量电路（16）测得。 6. The electronic circuit of the dual laterolog tool according to claim 5, characterized in that: the calibration circuit (10) is connected to the ground reference electrode, and the voltage between the M2-pole ring of the main electrode and the ground reference electrode , measured by the voltage measurement circuit (16).
CN201220429099.3U 2012-08-28 2012-08-28 Electronic circuit of dual laterolog instrument Expired - Fee Related CN202788799U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103643937A (en) * 2013-12-16 2014-03-19 西南石油大学 Dual laterolog method and instrument for measuring permittivity and resistivity of formation rock
CN105525918A (en) * 2014-10-24 2016-04-27 中国石油集团长城钻探工程有限公司 Dual laterolog equipment, electrode system of dual laterolog equipment and formation resistivity measuring method
CN110792422A (en) * 2018-07-16 2020-02-14 中国石油化工股份有限公司 Device and method for measuring lateral resistivity while drilling
CN111350494A (en) * 2020-03-16 2020-06-30 中国石油天然气集团有限公司 Lateral self-adaptive constant power control method for hardware focusing array

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103643937A (en) * 2013-12-16 2014-03-19 西南石油大学 Dual laterolog method and instrument for measuring permittivity and resistivity of formation rock
CN103643937B (en) * 2013-12-16 2016-08-17 西南石油大学 Measure formation rock dielectric constant and resistivity Dual Laterolog Logging Method and instrument
CN105525918A (en) * 2014-10-24 2016-04-27 中国石油集团长城钻探工程有限公司 Dual laterolog equipment, electrode system of dual laterolog equipment and formation resistivity measuring method
CN105525918B (en) * 2014-10-24 2021-09-03 中国石油集团长城钻探工程有限公司 Dual lateral logging instrument, electrode system thereof and formation resistivity measuring method
CN110792422A (en) * 2018-07-16 2020-02-14 中国石油化工股份有限公司 Device and method for measuring lateral resistivity while drilling
CN110792422B (en) * 2018-07-16 2023-02-03 中国石油化工股份有限公司 Device and method for measuring lateral resistivity while drilling
CN111350494A (en) * 2020-03-16 2020-06-30 中国石油天然气集团有限公司 Lateral self-adaptive constant power control method for hardware focusing array
CN111350494B (en) * 2020-03-16 2023-06-30 中国石油天然气集团有限公司 Lateral self-adaptive constant power control method for hardware focusing array

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