CN103643937A - Dual laterolog method and instrument for measuring permittivity and resistivity of formation rock - Google Patents
Dual laterolog method and instrument for measuring permittivity and resistivity of formation rock Download PDFInfo
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- CN103643937A CN103643937A CN201310687720.5A CN201310687720A CN103643937A CN 103643937 A CN103643937 A CN 103643937A CN 201310687720 A CN201310687720 A CN 201310687720A CN 103643937 A CN103643937 A CN 103643937A
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Abstract
The invention relates to a dual laterolog method and instrument for measuring the permittivity and the resistivity of formation rock. According to the method, double parameters including the resistivity and the permittivity of the formation rock are measured to obtain oil-gas-water saturation and pore structure parameters of the formation; during deep investigation, a power supply supplies power for an underground instrument through a power supply cable and a power supply circuit; a main electrode sends main current, and meanwhile, two pairs of bucking electrodes which are placed symmetrically up and down on two sides of the main electrode send isotropic current with the main current and perform focus on the main current; and supervision electrodes send supervision current to guarantee focus of the main current, and the resistivity and the permittivity of the formation are calculated simultaneously through a measurement circuit. The dual laterolog instrument comprises the power supply circuit, the main electrode, an insulator, the supervision electrodes, the bucking electrodes, a loop electrode, the measurement circuit, a signal cable, a ground computer workstation, the power supply cable, an insulation layer and a stainless steel casing. The method and the instrument can measure the resistivity and the permittivity simultaneously of the formation.
Description
Technical field
The present invention relates to measure formation rock capacitivity and resistivity Dual Laterolog Logging Method and instrument, for exploration of oil and gas field field during well logging measuring well sub-surface resistivity and capacitivity, and analyze the oil gas water information in stratum.
Background technology
In existing logging technique, bilateral by screened circuit and supervisory electronic circuit, forces the current direction deep formation being sent by main electrode to electrical log technology, and by two radials depth of investigetion of the depth, reflects the information of hydrocarbon stratum.Along with the increase of difficulties in exploration, traditional bilateral to electrical log technology more and more difficulty reflected exactly hydrocarbon stratum information.The capacitivity dual laterolog technology that the present invention proposes designs in order to make up this weak point just.
Summary of the invention
The object of the invention is in order to overcome the deficiencies in the prior art, provide and measure formation rock capacitivity and resistivity Dual Laterolog Logging Method and instrument, can measure resistivity and the capacitivity on stratum simultaneously, the oil gas water information that reflects stratum by the variation of these two parameters, for accurately judging hydrocarbon stratum information, quantitatively calculate hydrocarbon stratum saturation ratio foundation is provided.
Technical scheme of the present invention is:
The present invention measures formation rock capacitivity and resistivity Dual Laterolog Logging Method, resistivity and capacitivity by measurement formation rock are two-parameter, obtain hydrocarbon stratum water saturation, formation pore structural parameters, method comprises as follows: the power supply of instrument is provided by surface laboratory, when carrying out deep investigation, power supply is that downhole instrument is powered by feed cable through power supply circuits; Under rated power and frequency, by main electrode, send principal current, the bucking electrode that is simultaneously placed in main electrode 2 both sides by two pairs of upper and lower symmetries sends the electric current with the principal current same sex, and principal current is focused on; Meanwhile, monitor electrode sends supervision electric current to guarantee the focusing of principal current, between each electrode, has isolator to separate; Principal current arrives loop electrode through stratum, calculates resistivity and the capacitivity on stratum through measuring circuit simultaneously, and its measurement result is delivered to ground-based computer work station to preserve through signal-transmitting cable, completes whole measurement.
When carrying out shallow penetration, power supply is that downhole instrument is powered by power supply circuits; Under rated power and frequency, by main electrode, send principal current, the bucking electrode that is placed in main electrode both sides by two pairs of upper and lower symmetries sends the electric current with the principal current same sex simultaneously, and principal current is focused on; Meanwhile, monitor electrode sends supervision electric current to guarantee the focusing of principal current, between each electrode, has isolator to separate.Principal current arrives bucking electrode through stratum, calculates resistivity and the capacitivity on stratum through measuring circuit simultaneously, and its measurement result is delivered to ground-based computer work station to preserve through cable, completes whole measurement.
The present invention measures formation rock capacitivity and resistivity On Dual-Lateral Log, by power supply circuits, and main electrode, isolator, monitor electrode, bucking electrode, loop electrode, measuring circuit, signal cable, ground-based computer work station, feed cable, insulating layer, Stainless Steel Shell forms.Described Stainless Steel Shell is the main body of instrument, by the stainless steel of high temperature high voltage resistant, is made; Isolator is mainly to play insulation and protect electronic circuit to avoid damage, need to be comprised of resistant to elevated temperatures insulation materials; Described power supply circuits, main electrode, isolator, monitor electrode, bucking electrode and loop electrode can be according to the fabrication techniques of current On Dual-Lateral Log, and measuring circuit needs to increase capacitivity and measures; Signal after measurement, arrives ground-based computer work station through cable transmission.
Advantage of the present invention and innovative point are: resistivity and the capacitivity that can in stratum, measure rock stratum simultaneously; Simple in structure, easy to operate.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the present invention measures formation rock capacitivity and resistivity Dual Laterolog Logging Method and instrument.
In figure, 1. power supply circuits; 2. main electrode; 3. isolator; 4. monitor electrode; 15. monitor electrodes; 5. monitor electrode; 16. monitor electrodes; 6. bucking electrode; 17. bucking electrodes; 7. bucking electrode; 18. bucking electrodes; 8. loop electrode; 9. measurement electrode; 10. signal-transmitting cable; 11. ground-based computer work stations; 12. feed cables; 13 insulating layers; 14. Stainless Steel Shell.
The specific embodiment
By reference to the accompanying drawings, specific embodiments of the invention are as follows:
As shown in Figure 1, the present invention measures formation rock capacitivity and resistivity Dual Laterolog Logging Method, resistivity and capacitivity by measurement formation rock are two-parameter, obtain hydrocarbon stratum water saturation, formation pore structural parameters, method comprises as follows: the power supply of instrument is provided by surface laboratory, and when carrying out deep investigation, power supply is powered for downhole instrument through power supply circuits 1 by feed cable 12; Under rated power and frequency, by main electrode 2, send principal current, simultaneously by two pairs of upper and lower symmetries, be placed in the bucking electrode (6,17) on main electrode 2 both sides and bucking electrode (7,18) and send the electric current with the principal current same sex, principal current is focused on; Meanwhile, monitor electrode (4,15) and monitor electrode (5,16) send supervision electric current to guarantee the focusing of principal current, have isolator 3 to separate between each electrode; Principal current arrives loop electrode 8 through stratum, calculate resistivity and the capacitivity on stratum through measuring circuit 9 simultaneously, and its measurement result is delivered to ground-based computer work station 11 to preserve through signal-transmitting cable 10, completes whole measurement.
When carrying out shallow penetration, power supply is powered for downhole instrument by power supply circuits 1; Under rated power and frequency, by main electrode 2, send principal current, the bucking electrode (6,7) that is simultaneously placed in main electrode 2 both sides by two pairs of upper and lower symmetries sends the electric current with the principal current same sex, and principal current is focused on; Meanwhile, monitor electrode (4,15) and monitor electrode (5,16) send supervision electric current to guarantee the focusing of principal current, have isolator 3 to separate between each electrode.Principal current arrives bucking electrode (7,18) through stratum, calculate resistivity and the capacitivity on stratum through measuring circuit 9 simultaneously, and its measurement result is delivered to ground-based computer work station 11 to preserve through cable 10, completes whole measurement.
The present invention measures formation rock capacitivity and resistivity On Dual-Lateral Log, by power supply circuits 1, main electrode 2, isolator 3, monitor electrode (4,15,5,16), bucking electrode (6,17,7,18), loop electrode 8, measuring circuit 9, signal cable 10, ground-based computer work station 11, feed cable 12, insulating layer 13, Stainless Steel Shell 14 form.Described Stainless Steel Shell 14 is main bodys of instrument, by the stainless steel of high temperature high voltage resistant, is made; Isolator 3 is mainly to play insulation and protect electronic circuit to avoid damage, need to be comprised of resistant to elevated temperatures insulation materials; Described power supply circuits 1, main electrode 2, isolator 3, monitor electrode (4,15,5,16), bucking electrode (6,17,7,18) and loop electrode 8 can be according to the fabrication techniques of current On Dual-Lateral Log, and 9 needs of measuring circuit increase capacitivity and measure; Signal after measurement, is transferred to ground-based computer work station 11 through cable 10.
Claims (2)
1. measure formation rock capacitivity and resistivity Dual Laterolog Logging Method, it is characterized in that: resistivity and capacitivity by measurement formation rock are two-parameter, obtain hydrocarbon stratum water saturation, formation pore structural parameters, method comprises as follows: when carrying out deep investigation, power supply is downhole instrument power supply by feed cable (12) through power supply circuits (1); Under rated power and frequency, by main electrode (2), send principal current, simultaneously by two pairs of upper and lower symmetries, be placed in the bucking electrode (6,17) on main electrode (2) both sides and bucking electrode (7,18) and send the electric current with the principal current same sex, principal current is focused on; Meanwhile, monitor electrode (4,15) and monitor electrode (5,16) send supervision electric current to guarantee the focusing of principal current, have isolator (3) to separate between each electrode; Principal current arrives loop electrode (8) through stratum, calculate resistivity and the capacitivity on stratum through measuring circuit (9) simultaneously, and its measurement result is delivered to ground-based computer work station (11) to preserve through signal-transmitting cable (10), completes whole measurement.
2. measure formation rock capacitivity and resistivity On Dual-Lateral Log, by power supply circuits (1), main electrode (2), isolator (3), monitor electrode (4,15,5,16), bucking electrode (6,17,7,18), loop electrode (8), measuring circuit (9), signal cable (10), ground-based computer work station (11), feed cable (12), insulating layer (13), Stainless Steel Shell (14) form, it is characterized in that: described Stainless Steel Shell (14) is the main body of instrument, by the stainless steel of high temperature high voltage resistant, is made; Isolator (3) is mainly to play insulation and protect electronic circuit to avoid damage, need to be comprised of resistant to elevated temperatures insulation materials; Described power supply circuits (1), main electrode (2), isolator (3), monitor electrode (4,15,5,16), bucking electrode (6,17,7,18) and loop electrode (8) can be according to the fabrication techniques of current On Dual-Lateral Log, and measuring circuit (9) needs to increase capacitivity and measures; Signal after measurement, is transferred to ground-based computer work station (11) through cable (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310687720.5A CN103643937B (en) | 2013-12-16 | 2013-12-16 | Measure formation rock dielectric constant and resistivity Dual Laterolog Logging Method and instrument |
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| CN201310687720.5A CN103643937B (en) | 2013-12-16 | 2013-12-16 | Measure formation rock dielectric constant and resistivity Dual Laterolog Logging Method and instrument |
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| CN103643937A true CN103643937A (en) | 2014-03-19 |
| CN103643937B CN103643937B (en) | 2016-08-17 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088629A (en) * | 2014-05-13 | 2014-10-08 | 刘红岐 | Ground double-electrical spectrum mineral resource detecting method and recognizing technology |
| CN105201497A (en) * | 2015-10-09 | 2015-12-30 | 王伟男 | Well logging method and system based on stratum impedance |
| 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 |
| CN107002488A (en) * | 2014-12-31 | 2017-08-01 | 哈利伯顿能源服务公司 | Logged well using the stratum carried out based on the measured value of multicomponent data processing of anisotropy capacitivity and resistivity |
| CN107816344A (en) * | 2017-09-20 | 2018-03-20 | 中国石油天然气集团公司 | One kind is with brill side electrode array main screen integral electrode structure and preparation method thereof |
| CN109695448A (en) * | 2018-12-11 | 2019-04-30 | 中国石油天然气集团有限公司 | A kind of underground rock core hole formation resistivity measuring probe and its measurement method |
| CN114419975A (en) * | 2022-01-18 | 2022-04-29 | 西南石油大学 | Composite teaching demonstration device and method for common resistivity logging and dual laterolog |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088629A (en) * | 2014-05-13 | 2014-10-08 | 刘红岐 | Ground double-electrical spectrum mineral resource detecting method and recognizing technology |
| CN104088629B (en) * | 2014-05-13 | 2017-04-05 | 刘红岐 | The method of the double electricity spectrum detections in ground and identification mineral reserve |
| CN107002488A (en) * | 2014-12-31 | 2017-08-01 | 哈利伯顿能源服务公司 | Logged well using the stratum carried out based on the measured value of multicomponent data processing of anisotropy capacitivity and resistivity |
| 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 |
| CN105201497A (en) * | 2015-10-09 | 2015-12-30 | 王伟男 | Well logging method and system based on stratum impedance |
| CN105201497B (en) * | 2015-10-09 | 2018-03-20 | 王伟男 | A kind of logging method resisted based on formation resistivity and system |
| CN107816344A (en) * | 2017-09-20 | 2018-03-20 | 中国石油天然气集团公司 | One kind is with brill side electrode array main screen integral electrode structure and preparation method thereof |
| CN109695448A (en) * | 2018-12-11 | 2019-04-30 | 中国石油天然气集团有限公司 | A kind of underground rock core hole formation resistivity measuring probe and its measurement method |
| CN114419975A (en) * | 2022-01-18 | 2022-04-29 | 西南石油大学 | Composite teaching demonstration device and method for common resistivity logging and dual laterolog |
| 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 |
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