CN102094625B - Constant power dual laterolog equipment circuit and control method thereof - Google Patents
Constant power dual laterolog equipment circuit and control method thereof Download PDFInfo
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- CN102094625B CN102094625B CN200910247010.4A CN200910247010A CN102094625B CN 102094625 B CN102094625 B CN 102094625B CN 200910247010 A CN200910247010 A CN 200910247010A CN 102094625 B CN102094625 B CN 102094625B
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- Analogue/Digital Conversion (AREA)
- Measurement Of Current Or Voltage (AREA)
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Abstract
The invention relates to a constant power dual laterolog equipment circuit and a control method thereof. The conventional resistivity logging equipment adopts a constant current working way, conductivity logging equipment adopts a constant voltage working way, and the conventional resistivity logging equipment only has the change of voltage response and the conductivity logging equipment only has the change of current response when a formation resistivity is changed, so that measuring dynamic ranges are narrow. The constant power dual laterolog equipment circuit consists of a digital circuit and an analog circuit, wherein the analog circuit comprises a deep power control current source circuit, a shallow power control current source circuit, a main monitoring circuit, an auxiliary monitoring circuit, a voltage measurement circuit, a current measurement circuit and a scale circuit; and the digital circuit comprises a multi-way switch, a program-controlled gain, a digital to analog (D/A) converter, an analog to digital (A/D) converter, a singlechip, a timer and a digital control panel. In the constant power dual laterolog equipment circuit, a singlechip control technology is adopted, and a clock produces synchronous deep and shallow lateral working frequencies when the singlechip is operated; an oscillating source circuit and a square wave generating circuit in the conventional designs are omitted; and deep and shallow lateral current sources adopt a high power amplifier integrated circuit to greatly improve the load capacity.
Description
Technical field
The present invention relates to a kind of constant power double-lateral logging instrument circuit and control method thereof.
Technical background
Traditional resistivity tool adopts constant current working method, and conductivity logging instrument adopts constant voltage working method, and when formation resistivity changes, the former only has this variation of voltage responsive, and the latter only has this variation of current-responsive, therefore, measures dynamic range all less.The main feature of constant power type dual laterolog equipment is the power invariability that keeps master current source in during well logging, to obtaining large as far as possible measurement dynamic range and higher certainty of measurement.
Summary of the invention
Technical problem solved by the invention is to provide a kind of constant power double-lateral logging instrument circuit and control method thereof.
For solving above-mentioned technical problem, the technical scheme that the present invention takes:
Special character of the present invention is: digital circuit and analog circuit, consist of, 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, digital circuit comprises variable connector, programme-controlled gain, D/A converter, A/D converter, single-chip microcomputer, timer, digital control plate, variable connector, programme-controlled gain, D/A converter, A/D converter, timer is all connected with digital control plate with single-chip microcomputer, record Ge road analog signal and output to programme-controlled gain through variable connector, again by A/D converter converting digital, described analog circuit is connected with D/A converter by A/D converter with digital circuit.
Above-mentioned control method realizes by following steps:
(1), by analog circuit, form focus current sheet, complete voltage, current measurement, dark side direction operating frequency is 35Hz, and shallow side direction operating frequency is 280Hz;
(2), under the control of the single-chip microcomputer of digital circuit, will record the analog signal timesharing of Ge road through variable connector, programme-controlled gain, carries out A/D conversion, data acquisition;
(3), the digital control plate of digital circuit is the voltage V recording
d, V
sand electric current I
d, I
safter changing by A/D converter, after processing, carry out the transmitting power of side direction and control.
Compared with prior art, beneficial effect of the present invention:
1, adopt single-chip microcomputer control technology, with single-chip microcomputer work clock, produce synchronously dark, shallow side direction operating frequency, save oscillation source circuit and square wave generation circuit in design in the past;
2, dark, shallow lateral current source all adopts high-power power amplifier integrate circuit, and its carrying load ability is strengthened greatly.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present invention;
Fig. 2 is the theory diagram of digital circuit of the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Referring to Fig. 1～2, the present invention 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, digital circuit comprises variable connector, programme-controlled gain, D/A converter, A/D converter, single-chip microcomputer, timer, digital control plate, variable connector, programme-controlled gain, D/A converter, A/D converter, timer is all connected with digital control plate with single-chip microcomputer, record Ge road analog signal and output to programme-controlled gain through variable connector, again by A/D converter converting digital, described analog circuit is connected with D/A converter by A/D converter with digital circuit.
When instrument is normally worked in open hole well, dark, shallow side direction power control current source is launched main flow and screen stream by electrode system simultaneously, under the effect of supervisory circuit, forms focus current sheet, thereby make to shield stream, forces main flow radially to flow into the detection stratum of certain depth.By measuring the size of main flow (flow out from main electrode, be back to B electrode (armouring)) and voltage (main electrode is to N electrode), obtain surveying the depth side direction resistivity on stratum.
Control method of the present invention, realizes by following steps:
(1), by analog circuit, form focus current sheet, complete voltage, current measurement, dark side direction operating frequency is 35Hz, and shallow side direction operating frequency is 280Hz;
(2), under the control of the single-chip microcomputer of digital circuit, to record the analog signal timesharing of Ge road through variable connector, programme-controlled gain, carry out A/D conversion, data acquisition, rated output, produce control signal Ps, Pd, and produce the square-wave signal S_280Hz that is used to form 35Hz, 280Hz, S_35Hz.
(3), the digital control plate of digital circuit is the voltage V recording
d, V
sand electric current I
d, I
safter changing by A/D converter, after processing, carry out the transmitting power of side direction and control.
Claims (2)
1. a constant power double-lateral logging instrument circuit, it is characterized in that: by digital circuit and analog circuit, formed, 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, dark side emission signal PD, shallow side transmits PS respectively by dark, shallow power control current source circuit and respectively through transmitting transformer T9 and shallow transmitting transformer T10 are transmitted into electrode system deeply; Electrode is delivered to main supervisory circuit and auxiliary supervisory circuit by the pressure difference signal between electrode, produces after treatment bucking voltage and by calibration circuit, is added to electrode system again, makes to form focus current sheet; Transmitting main flow information exchange scaleover circuit is delivered to tension measuring circuit and current measurement circuit, obtains dark side direction voltage V
d, shallow side direction voltage V
swith dark lateral current I
d, shallow lateral current I
s, then deliver to digital circuit;
Digital circuit comprises variable connector, programme-controlled gain, D/A converter, A/D converter, single-chip microcomputer, timer, digital control plate, variable connector, programme-controlled gain, D/A converter, A/D converter, timer are all connected with digital control plate with single-chip microcomputer, record Ge road analog signal and output to programme-controlled gain through variable connector, then by A/D converter converting digital; Described analog circuit is connected with D/A converter by A/D converter with digital circuit.
2. the control method of a kind of constant power double-lateral logging instrument circuit according to claim 1, is characterized in that: by following steps, realize:
(1), by analog circuit, form focus current sheet, complete voltage, current measurement, dark side direction operating frequency is 35Hz, and shallow side direction operating frequency is 280Hz;
(2), under the control of the single-chip microcomputer of digital circuit, will record the analog signal timesharing of Ge road through variable connector, programme-controlled gain, carries out A/D conversion, data acquisition;
(3), the digital control plate of digital circuit is the voltage V recording
d, V
sand electric current I
d, I
safter changing by A/D converter, after processing, carry out the transmitting power of side direction and control;
Described V
dfor dark side direction voltage;
Described V
sfor shallow side direction voltage;
Described I
dfor dark lateral current;
Described I
sfor shallow lateral current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910247010.4A CN102094625B (en) | 2009-12-14 | 2009-12-14 | Constant power dual laterolog equipment circuit and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910247010.4A CN102094625B (en) | 2009-12-14 | 2009-12-14 | Constant power dual laterolog equipment circuit and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102094625A CN102094625A (en) | 2011-06-15 |
| CN102094625B true CN102094625B (en) | 2014-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910247010.4A Expired - Fee Related CN102094625B (en) | 2009-12-14 | 2009-12-14 | Constant power dual laterolog equipment circuit and control method thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110967772A (en) * | 2019-12-21 | 2020-04-07 | 中国电波传播研究所（中国电子科技集团公司第二十二研究所） | Constant-power focusing lateral system device in laboratory and focusing lateral method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0348084A1 (en) * | 1988-06-13 | 1989-12-27 | Halliburton Company | Data conversion circuit for well logging system |
| US5600246A (en) * | 1995-11-28 | 1997-02-04 | Western Atlas International, Inc. | Method and apparatus for reducing signal-phase error in induction well logging instruments |
| CN1258806A (en) * | 1998-12-28 | 2000-07-05 | 中国科学院西安光学精密机械研究所 | Optical fiber sensing four-parameter logging instrument for steam injection well |
| RU2204714C1 (en) * | 2001-09-28 | 2003-05-20 | Открытое акционерное общество НПФ "Геофизика" | Automatic formation tester |
| CN1712995A (en) * | 2005-07-15 | 2005-12-28 | 中国石化集团胜利石油管理局测井公司 | Logging instrument with strong focus and double side directions |
| CN101012748A (en) * | 2007-02-02 | 2007-08-08 | 中国石化集团胜利石油管理局测井公司 | Wellface scanning imagery logging device with microresistivity |
| CN201184197Y (en) * | 2007-11-29 | 2009-01-21 | 中国石油天然气集团公司 | Data acquisition circuit for three-component induction logging |
| CN201606071U (en) * | 2009-12-14 | 2010-10-13 | 西安威尔罗根能源科技有限公司 | Constant power double-lateral logging instrument circuit |
-
2009
- 2009-12-14 CN CN200910247010.4A patent/CN102094625B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0348084A1 (en) * | 1988-06-13 | 1989-12-27 | Halliburton Company | Data conversion circuit for well logging system |
| US5600246A (en) * | 1995-11-28 | 1997-02-04 | Western Atlas International, Inc. | Method and apparatus for reducing signal-phase error in induction well logging instruments |
| CN1258806A (en) * | 1998-12-28 | 2000-07-05 | 中国科学院西安光学精密机械研究所 | Optical fiber sensing four-parameter logging instrument for steam injection well |
| RU2204714C1 (en) * | 2001-09-28 | 2003-05-20 | Открытое акционерное общество НПФ "Геофизика" | Automatic formation tester |
| CN1712995A (en) * | 2005-07-15 | 2005-12-28 | 中国石化集团胜利石油管理局测井公司 | Logging instrument with strong focus and double side directions |
| CN101012748A (en) * | 2007-02-02 | 2007-08-08 | 中国石化集团胜利石油管理局测井公司 | Wellface scanning imagery logging device with microresistivity |
| CN201184197Y (en) * | 2007-11-29 | 2009-01-21 | 中国石油天然气集团公司 | Data acquisition circuit for three-component induction logging |
| CN201606071U (en) * | 2009-12-14 | 2010-10-13 | 西安威尔罗根能源科技有限公司 | Constant power double-lateral logging instrument circuit |
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| CN102094625A (en) | 2011-06-15 |
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Granted publication date: 20140409 Termination date: 20181214 |