CN202788799U - Electronic circuit of dual laterolog instrument - Google Patents
Electronic circuit of dual laterolog instrument Download PDFInfo
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- CN202788799U CN202788799U CN 201220429099 CN201220429099U CN202788799U CN 202788799 U CN202788799 U CN 202788799U CN 201220429099 CN201220429099 CN 201220429099 CN 201220429099 U CN201220429099 U CN 201220429099U CN 202788799 U CN202788799 U CN 202788799U
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- 238000012544 monitoring process Methods 0.000 claims description 33
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Abstract
The utility model discloses a two laterolog instrument electronic circuit, including the calibration circuit that the scale was handled before two laterolog main electrode, treatment circuit, measurement and the transmitting circuit of transmitting current signal, two laterolog main electrode are including upper and lower two sets of independent electrode systems, go up the electrode system and correspond and be provided with the last treatment circuit who is used for control current focusing, and lower electrode system corresponds and is provided with the lower treatment circuit who is used for control current focusing. The utility model discloses the main current of transmission is difficult for dispersing at big well, high mineralization mud, high resistant stratum, and the focusing ability who articulates with the ground system is strong, and can measure accurate shallow lateral resistivity at big well, high mineralization mud, high resistant stratum.
Description
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. dual laterolog equipment electronic circuit, it is characterized in that: comprise that bilateral carries out the calibration circuit (10) 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.
2. dual laterolog equipment electronic circuit according to claim 1, it is characterized in that: described radiating circuit comprises A0 control circuit (1) and A0 power amplification circuit (2), A0 control circuit (1) control A0 power amplification circuit (2) the dark current signal of emission and shallow current signal are 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.
3. dual laterolog equipment electronic circuit according to claim 1 and 2 is characterized in that: described upper treatment circuit comprises pre-amplification circuit (3), upper main monitoring discharge circuit (4), A* control circuit (5), A4+ power amplification circuit (6), A3+ power amplification circuit (7), A3 control circuit (8) and the auxiliary discharge circuit (9) of monitoring; Potential difference between the M2+ of main electrode and the M1+ polar ring is amplified through upper pre-amplification circuit (3), again after upper main monitoring discharge circuit (4) is processed, enter A3 control circuit (8), the output signal control A3+ power amplification circuit (7) of A3 control circuit (8), 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 (3) through upper pre-amplification circuit, again after upper main monitoring discharge circuit (4) is processed, enter A* control circuit (5), the output signal control A4+ power amplification circuit (6) of A* control circuit (5), 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 (9) is processed, enter A3 control circuit (8), the output signal control A3+ power amplification circuit (7) of A3 control circuit (8), 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.
4. dual laterolog equipment electronic circuit according to claim 3 is characterized in that: described lower treatment circuit comprises lower pre-amplification circuit (11), lower main monitoring discharge circuit (12), A* control circuit (5), A4-power amplification circuit (13), A3-power amplification circuit (14), A3 control circuit (8) and the auxiliary discharge circuit (9) of monitoring; Potential difference between the M2-of main electrode and the M1-polar ring is amplified through lower pre-amplification circuit (11), again after lower main monitoring discharge circuit (12) is processed, enter A3 control circuit (8), the output signal control A3-power amplification circuit (14) of A3 control circuit (8), 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 (11), again after lower main monitoring discharge circuit (12) is processed, enter A* control circuit (5), the output signal control A4-power amplification circuit (13) of A* control circuit (5), 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-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 (9) is processed, enter A3 control circuit (8), the output signal control A3-power amplification circuit (14) of A3 control circuit (8), 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.
5. according to claim 1,2 or 4 described dual laterolog equipment electronic circuits, it is characterized in that: the current signal that the A0 polar ring of described main electrode flows out is sent into the stratum, and records by current measurement circuit (15).
6. dual laterolog equipment electronic circuit according to claim 5, it is characterized in that: described calibration circuit (10) is connected to the ground reference electrode, and the M2-polar ring of main electrode and the voltage between the ground reference electrode record by tension measuring circuit (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220429099 CN202788799U (en) | 2012-08-28 | 2012-08-28 | Electronic circuit of dual laterolog instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220429099 CN202788799U (en) | 2012-08-28 | 2012-08-28 | Electronic circuit of dual laterolog instrument |
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| CN202788799U true CN202788799U (en) | 2013-03-13 |
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| CN 201220429099 Expired - Fee Related CN202788799U (en) | 2012-08-28 | 2012-08-28 | Electronic circuit of dual laterolog instrument |
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Cited By (4)
| 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 |
-
2012
- 2012-08-28 CN CN 201220429099 patent/CN202788799U/en not_active Expired - Fee Related
Cited By (8)
| 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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Granted publication date: 20130313 Termination date: 20170828 |
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