CN103643947B - A kind of dual-electrical frequency spectrum logging instrument and method - Google Patents
A kind of dual-electrical frequency spectrum logging instrument and method Download PDFInfo
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- CN103643947B CN103643947B CN201310689921.9A CN201310689921A CN103643947B CN 103643947 B CN103643947 B CN 103643947B CN 201310689921 A CN201310689921 A CN 201310689921A CN 103643947 B CN103643947 B CN 103643947B
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Abstract
The present invention relates to a kind of dual-electrical frequency spectrum logging instrument and method, logger is made up of power supply circuits, main electrode, insulator, monitor electrode, bucking electrode, loop electrode, measuring circuit, signal cable, ground-based computer work station, feed cable, insulating barrier, Stainless Steel Shell.Insulator mainly plays insulation and protects electronic circuit from damage, power supply circuits, main electrode, insulator, monitor electrode, bucking electrode, and loop electrode can be according to the fabrication techniques of current On Dual-Lateral Log；Signal after measurement, through cable transmission to ground-based computer work station.Logging method is, principal current is sent by main electrode, by two, the bucking electrode being placed in main electrode both sides symmetrical above and below and bucking electrode are sent and the electric current of the principal current same sex simultaneously, principal current is focused, calculates resistivity and the dielectric constant on stratum through measuring circuit simultaneously.The present invention can measure the resistivity of rock stratum and the spectrum signature of dielectric constant simultaneously.
Description
Technical field
The present invention relates to a kind of dual-electrical frequency spectrum logging instrument and method, measure certain in the well logging of exploration of oil and gas field field
Formation resistivity and the spectrum signature of dielectric constant in frequency range, and determine the oil gas water information in stratum.
Background technology
In existing logging technique, double-induction method logging technique passes through screened circuit and supervisory electronic circuit, forces and is sent by main electrode
Current direction deep formation, and reflected the information of hydrocarbon stratum by two radials depth of investigetion of the depth.Along with exploration difficulty
The increase of degree, traditional double-induction method logging technique has been increasingly difficult to reflect hydrocarbon stratum information exactly.The present invention
The double electricity frequency spectrum logging techniquies proposed are precisely in order to make up this weak point and design.
Summary of the invention
The invention aims to overcome the deficiencies in the prior art, it is provided that a kind of dual-electrical frequency spectrum logging instrument and method.Use
A kind of dual-electrical frequency spectrum logging instrument and method can measure in certain frequency scope (Hz-MHz) simultaneously stratum resistivity and
Dielectric constant, by the oil gas water information on the change reflection stratum of the two parameter, for accurately judging hydrocarbon stratum information, quantitatively
Calculate hydrocarbon stratum saturation and foundation is provided.
One dual-electrical frequency spectrum logging instrument of the present invention, by power supply circuits, main electrode, insulator, monitor electrode, bucking electrode,
Loop electrode, measuring circuit, signal cable, ground-based computer work station, feed cable, insulating barrier, Stainless Steel Shell group
Become.Stainless Steel Shell is the main body of instrument, the stainless steel of high temperature high voltage resistant make；Insulator mainly play insulation and
Protection electronic circuit, from damage, needs to be made up of resistant to elevated temperatures insulant；Power supply circuits, main electrode, insulator, prison
Superintend and direct electrode, bucking electrode, loop electrode can according to the fabrication techniques of current On Dual-Lateral Log, its bucking electrode be by
12 columnar electrode compositions；Measuring circuit then needs to increase dielectric constant and measures；Signal after measurement, through cable transmission to ground
Computer workstation.
Between underground survey circuit and Stainless Steel Shell, place buffer insulation material, on the one hand block measuring circuit and metal-back
On the one hand conducting path between body, slows down impulsive force, it is to avoid instrument go into the well and on carry during, the machine to measuring circuit
Tool impulsive force, a protection circuit.By providing the alternating current of lower frequency to measuring circuit, electric current flows through stratum,
Resistivity and the dielectric constant on stratum can be recorded after arriving loop electrode.
The present invention a kind of double electricity frequency spectrum logging method, method is, the power supply of instrument is provided by surface laboratory, when detecting
Time, power supply is that downhole instrument is powered by cable through power supply circuits；Frequency, in 4Hz-4MHz, is sent main electricity by main electrode
Stream, is sent and the electricity of the principal current same sex the bucking electrode being placed in main electrode both sides symmetrical above and below and bucking electrode by two simultaneously
Stream, is focused principal current.Meanwhile, monitor electrode be send supervision electric current with ensure principal current focusing, each electrode it
Between have insulator to separate.Principal current arrives loop electrode through stratum, calculates resistivity and the electric capacity on stratum through measuring circuit simultaneously
Rate, its measurement result through cable deliver to ground-based computer work station with preserve, complete the measurement of a point, move to the next one
Point, repeats measuring process above, completes whole measurement.
The present invention is to measure resistivity and the dielectric constant parameter of formation rock in certain frequency range (Hz-MHz), logical
Cross resistivity and the spectral change of two parameters of dielectric constant, reflect formation pore structure and formation fluid type, particularly pin
The fine and close unconventionaloil pool such as oil-gas Layer and shale reservoir is hidden.
Advantages of the present invention and innovative point be: can measure the resistivity of rock stratum in certain frequency scope (Hz-MHz) simultaneously
Spectrum signature with dielectric constant.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of dual-electrical frequency spectrum logging instrument and method of the present invention.
In figure, 1. power supply circuits；2. main electrode；3. insulator；4. monitor electrode；15. monitor electrodes；5 monitor electrodes；16.
Monitor electrode；6. bucking electrode；17. bucking electrodes；7. bucking electrode；18. bucking electrodes；8. loop electrode；9. measure electricity
Road；10. signal cable；11. ground-based computer work stations；12. feed cables；13. insulating barriers；14. Stainless Steel Shell compositions.
Detailed description of the invention
In conjunction with accompanying drawing, the specific embodiment of the present invention is as follows:
As it is shown in figure 1, one dual-electrical frequency spectrum logging instrument of the present invention, by power supply circuits 1, main electrode 2, insulator 3, prison
Superintend and direct electrode four (4), monitor electrode ten five (15) and monitor electrode five (5), monitor electrode ten six (16), bucking electrode six
(6), bucking electrode ten seven (17) bucking electrode seven (7) and bucking electrode ten eight (18), loop electrode 8, measuring circuit
9, signal cable 10, ground-based computer work station 11, feed cable 12, insulating barrier 13, Stainless Steel Shell 14 form.
Stainless Steel Shell 14 is the main body of instrument, the stainless steel of high temperature high voltage resistant make；Insulator 3 mainly play insulation and
Protection electronic circuit, from damage, needs to be made up of resistant to elevated temperatures insulant；Power supply circuits 1, main electrode 2, insulator 3,
Monitor electrode four (4), monitor electrode ten five (15) and monitor electrode five (5), monitor electrode ten six (16), bucking electrode
Six (6), bucking electrode ten seven (17) bucking electrode seven (7) and bucking electrode ten eight (18), loop electrode 8 is according to mesh
The fabrication techniques of front On Dual-Lateral Log, its bucking electrode 18 is made up of 12 columnar electrodes；Measuring circuit 9 then needs
Dielectric constant to be increased is measured；Signal after measurement, is transferred to ground-based computer work station 11 through signal cable 10.
Between underground survey circuit and Stainless Steel Shell, place buffer insulation material, on the one hand block measuring circuit and metal-back
On the one hand conducting path between body, slows down impulsive force, it is to avoid instrument go into the well and on carry during, the machine to measuring circuit
Tool impulsive force, a protection circuit.By providing the alternating current of lower frequency to measuring circuit, electric current flows through stratum,
Resistivity and the dielectric constant on stratum can be recorded after arriving loop electrode.
The present invention a kind of double electricity frequency spectrum logging method, method is, the power supply of instrument is provided by surface laboratory, when detecting
Time, power supply by. feed cable 12 is powered for downhole instrument through power supply circuits 1；Frequency is in 4Hz-4MHz, by main electrode
2 send principal current, are placed in the bucking electrode six (6) on main electrode both sides, bucking electrode ten seven (17) by two to symmetrical above and below simultaneously
Bucking electrode seven (7) and bucking electrode ten eight (18) send and the electric current of the principal current same sex, are focused principal current.With
Time, monitor electrode four (4), monitor electrode ten five (15) and monitor electrode five (5), monitor electrode ten six (16) send
Supervision electric current, to ensure the focusing of principal current, has insulator 3 to separate between each electrode.Principal current arrives loop electrode 8 through stratum,
Calculate resistivity and the dielectric constant on stratum through measuring circuit 9, its measurement result delivers to ground-based computer work through cable 10 simultaneously
Stand 11 to preserve, complete the measurement of a point, move to next point, repeat measuring process above, complete whole measurement.
According to an aspect of of the present present invention design it is: a kind of measurement certain frequency scope (Hz-MHz) interior formation rock electric capacity
Rate and resistivity logging method and instrument, the measurement process of instrument is: when detecting, power supply by cable 12 through power supply
Circuit 1 is powered for downhole instrument；Measurement electric current must be sent by measuring electrode 2 in frequency range, the most right by two
Symmetrical above and below be placed in the bucking electrode six (6) on main electrode both sides, bucking electrode ten seven (17) bucking electrode seven (7) and screen
Cover electrode ten eight (18) to send and the electric current of the principal current same sex, principal current is focused.Meanwhile, monitor electrode four (4),
Monitor electrode ten five (15) and monitor electrode five (5), monitor electrode ten six (16) send supervision electric current to ensure principal current
Focusing, have insulator 3 to separate between each electrode.Principal current arrives loop electrode 8 through stratum, counts through measuring circuit 9 simultaneously
Calculating the resistivity on stratum and dielectric constant, its measurement signals cable 10 delivers to ground-based computer work station 11 to preserve, complete
Become the measurement of a point, move to next point, repeat measuring process above, complete whole measurement.
Claims (2)
1. a dual-electrical frequency spectrum logging instrument, by power supply circuits (1), main electrode (2), insulator (3), monitor electrode four (4),
Monitor electrode ten five (15) and monitor electrode five (5), monitor electrode ten six (16), bucking electrode six (6), bucking electrode ten
Seven (17) bucking electrodes seven (7) and bucking electrode ten eight (18), loop electrode (8), measuring circuit (9), signal cable
(10), ground-based computer work station (11), feed cable (12), insulating barrier (13), Stainless Steel Shell (14) composition,
It is characterized in that: Stainless Steel Shell (14) is the main body of instrument, the stainless steel of high temperature high voltage resistant make；Insulator (3)
Mainly play insulation and protection electronic circuit is made up of resistant to elevated temperatures insulant from damage, needs；Power supply circuits (1),
Main electrode (2), insulator (3), monitor electrode four (4), monitor electrode ten five (15) and monitor electrode five (5), supervision
Electrode ten six (16), bucking electrode six (6), bucking electrode ten seven (17) bucking electrode seven (7) and bucking electrode ten eight (18),
Loop electrode (8), according to the fabrication techniques of current On Dual-Lateral Log, its bucking electrode ten eight (18) is by 12 columns
Electrode forms, and measuring circuit (9) then needs to increase dielectric constant and measures；Signal after measurement, is transferred to through signal cable (10)
Ground-based computer work station (11).
2. double electricity frequency spectrum logging method, it is characterised in that: method is, when detecting, power supply passes through feed cable (12)
It is that downhole instrument is powered through power supply circuits (1)；Frequency, in 4Hz-4MHz, is sent principal current, simultaneously by main electrode (2)
It is placed in the bucking electrode six (6) on main electrode both sides, bucking electrode ten seven (17), bucking electrode seven (7) to symmetrical above and below by two
Send and the electric current of the principal current same sex with bucking electrode ten eight (18), principal current is focused；Meanwhile, prison monitor electrode four
(4), monitor electrode ten five (15) and monitor electrode five (5), monitor electrode ten six (16) send supervision electric current to ensure master
The focusing of electric current, has insulator (3) to separate between each electrode；Principal current arrives loop electrode (8) through stratum, through measuring circuit
(9) calculating resistivity and the dielectric constant on stratum, its measurement result delivers to ground-based computer work station through signal cable (10) simultaneously
(11) to preserve, complete the measurement of a point, move to next point, repeat measuring process above, complete whole measurement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310689921.9A CN103643947B (en) | 2013-12-16 | 2013-12-16 | A kind of dual-electrical frequency spectrum logging instrument and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310689921.9A CN103643947B (en) | 2013-12-16 | 2013-12-16 | A kind of dual-electrical frequency spectrum logging instrument and method |
Publications (2)
| Publication Number | Publication Date |
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| CN103643947A CN103643947A (en) | 2014-03-19 |
| CN103643947B true CN103643947B (en) | 2016-08-17 |
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| CN201310689921.9A Expired - Fee Related CN103643947B (en) | 2013-12-16 | 2013-12-16 | A kind of dual-electrical frequency spectrum logging instrument and method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986818A (en) * | 2015-02-28 | 2016-10-05 | 中国石油集团长城钻探工程有限公司 | Dual lateral logging unit |
| CN114419975B (en) * | 2022-01-18 | 2024-02-06 | 西南石油大学 | Composite teaching demonstration device and method for common resistivity well logging and double lateral well logging |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3891916A (en) * | 1973-08-27 | 1975-06-24 | Texaco Inc | Dual radio frequency measurement of dielectric constant and resistivity of borehole media |
| US4609873A (en) * | 1980-01-04 | 1986-09-02 | Texaco Inc. | Dielectric well logging system with at least three transmitter coils and at least two receiver coils for determining resistivity and dielectric constant of a subsurface formation adjacent a fluid invaded zone of the formation |
| US4700141A (en) * | 1983-03-31 | 1987-10-13 | Texaco Inc. | Deep penetration well logging sonde |
| CN1363844A (en) * | 2001-01-05 | 2002-08-14 | 新疆石油管理局测井公司 | Capacitance method for logging well and complex-resistivity well-logging instrument series |
| CN103293555A (en) * | 2013-05-22 | 2013-09-11 | 中国石油集团长城钻探工程有限公司 | Stratum dielectric constant and resistivity measuring instrument and method for applying same |
-
2013
- 2013-12-16 CN CN201310689921.9A patent/CN103643947B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3891916A (en) * | 1973-08-27 | 1975-06-24 | Texaco Inc | Dual radio frequency measurement of dielectric constant and resistivity of borehole media |
| US4609873A (en) * | 1980-01-04 | 1986-09-02 | Texaco Inc. | Dielectric well logging system with at least three transmitter coils and at least two receiver coils for determining resistivity and dielectric constant of a subsurface formation adjacent a fluid invaded zone of the formation |
| US4700141A (en) * | 1983-03-31 | 1987-10-13 | Texaco Inc. | Deep penetration well logging sonde |
| CN1363844A (en) * | 2001-01-05 | 2002-08-14 | 新疆石油管理局测井公司 | Capacitance method for logging well and complex-resistivity well-logging instrument series |
| CN103293555A (en) * | 2013-05-22 | 2013-09-11 | 中国石油集团长城钻探工程有限公司 | Stratum dielectric constant and resistivity measuring instrument and method for applying same |
Non-Patent Citations (1)
| Title |
|---|
| 基于电容率法的矿藏勘探新方法研究;刘红岐等;《地球科学进展》;20090930;第24卷(第9期);第1051-1056页 * |
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