CN102902294A - Method and system for full-automatic intelligent program-control power supply of subsurface instrument in well logging system - Google Patents
Method and system for full-automatic intelligent program-control power supply of subsurface instrument in well logging system Download PDFInfo
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- CN102902294A CN102902294A CN2011102100443A CN201110210044A CN102902294A CN 102902294 A CN102902294 A CN 102902294A CN 2011102100443 A CN2011102100443 A CN 2011102100443A CN 201110210044 A CN201110210044 A CN 201110210044A CN 102902294 A CN102902294 A CN 102902294A
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Abstract
The invention relates to a method for full-automatic intelligent program-control power supply of a subsurface instrument in a well logging system. The method includes the following steps: a) setting a target value of power supply for the subsurface instrument; b) setting a partial voltage correction coefficient of a transformer; c) subtracting voltage measuring feedback value of a subsurface cable head with the target value of power supply for the instrument to obtain a difference value, multiplying the difference value with the partial voltage correction coefficient of the transformer, and obtaining a control variable for controlling the output of program-control alternating voltage; d) repeating the step c) again and again, judging each time whether the voltage measuring feedback value of the subsurface cable head is within an expected value range or not during continuous repeating, and if so, stopping the repeating; and e) waiting for a certain amount of time, and performing the step c) again to obtain a required value of the voltage of the subsurface cable head within a certain tolerance range. The invention further relates to a system for implementing the method.
Description
Technical field
The present invention relates to a kind ofly in the geophysical well logging system, be the method for the program control power supply of subsurface equipment fully-automatic intelligent, and a kind of be the system of the program control power supply of subsurface equipment fully-automatic intelligent in the geophysical well logging system.
Background technology
Geophysical well logging or oil well logging also are in well logging, are called for short well logging, are the geophysics characteristics such as the electrochemical properties that utilizes the rock stratum, conductive characteristic, acoustic characteristic, radioactivity, and the method for measurement geophysical parameters belongs to one of applied geophysics method.During petroleum drilling, all must log well after getting into the deep degree of planned well, claim again the completion well logging, to obtain various oil geologies and engineering data, i.e. the information such as reservoir depth, thickness is as completion and the source book that develops oil fields.
Logging system mainly is divided into ground system and subsurface equipment two parts, connect by 7 core sheathed cables between the two, ground system and cable all are installed on the logging truck, during well logging, subsurface equipment transferred or lifts by the ground winch by cable, and power to subsurface equipment by cable, realize simultaneously the data communication of ground and down-hole.
Current Foreign Well Logging Technology is take imaging logging as main body, take highly integrated fast lining platform system as the forward position, the logging system of future generation of just researching and developing at present, take high-speed transfer, fully open and high precision Image-forming instrument as feature, focus on measurement and the evaluation of the complex reservoirs such as anisotropy, low resistance, just greatly develop connector for logging while drilling, hostile environment logging instrument, crossing sleeve pipe instrument etc., the logging technology that revalues to satisfy horizontal well drilling, ultra deep well drilling well, Lao Jing is puted forth effort to solve nuclear logging and is depended on environmentally harmful chemical source problem.With the technology such as multidimensional information measurement, the measurement of microcosmic petrophysical parameter, the down-hole direct sample analysis developing direction of attaching most importance to, pay attention to the Oil/Gas Reservoir Assessment of multidisciplinary synthesis.Greatly develop collection, explanation, operation and supporting integrated software systems.
At present, the method that powers up for the logging system subsurface equipment is traditional hand power-on method.Conventional logging system adopts power supply to be input to step-up transformer, arrives adjustable transformer again, outputs on the logging cable at last.By the manual adjustments adjustable transformer, control output voltage by the slip-stick artist when powering up, reach control cable head of subsurface instrument voltage, for instrument powers up.
Therefore, the hand power-on method adopts manual shift adjustable transformer knob, in operating process, the operation slip-stick artist will fasten one's eyes on detection window, regulate lentamente, the precision of the speed that powers up and cable head of subsurface instrument voltage depends on operation slip-stick artist's skill level, needs also to be easy to maloperation to occur and to cause instrument damage through training for a long time and execute-in-place.
Summary of the invention
Therefore, task of the present invention is to provide a kind of method and system that is used to the program control power supply of logging system subsurface equipment fully-automatic intelligent, so that the reliability that raising equipment uses, slip-stick artist's operation easier simplifies the operation, shorten the training time, reduce the maloperation possibility, enhance productivity.
The present invention is achieved by the following technical programs.
According to a first aspect of the invention, provide a kind of method that is used to the program control power supply of logging system subsurface equipment fully-automatic intelligent, said method comprising the steps of:
A) desired value that subsurface equipment is powered is set;
B) transformer dividing potential drop correction coefficient is set;
C) ask the desired value of down-hole cable end voltage measurement value of feedback and described instrument power supply poor and so that this difference multiply by described transformer dividing potential drop correction coefficient, thereby controlled amount is used for controlling the output of program control alternating voltage;
D) repeat c) step, constantly circulation in the process of constantly circulation, judges all whether described down-hole cable end voltage measurement value of feedback is in the scope of expectation value, and in this case at every turn, then stops circulation;
E) wait for certain hour, again carry out step c) one time, obtain being in the required value of the down-hole cable end voltage within definite range of tolerable variance.
According to another preferred embodiment, each voltage increment of regulating and total step number according to different cable lengths with loading condition and different.
According to another preferred embodiment, the desired value of described subsurface equipment power supply is set to 250v.
According to another preference, method step a) in, before not powering up, the down-hole cable end is set, and to measure value of feedback be zero.
According to another preferred embodiment, described desired range of values is 250VAC ± 5%.
According to another embodiment, described transformer dividing potential drop correction coefficient is set to 1/3.
According to another embodiment, described range of tolerable variance is ± 5%, thereby finally can reach down-hole cable end power voltage supply requirement 250VAC ± 5%.
In addition, according to a further aspect in the invention, a kind of system that is used to the program control power supply of logging system subsurface equipment fully-automatic intelligent is provided, described system comprises programmable AC power supply, described programmable AC power supply is arranged for according to given controlled quentity controlled variable and exports corresponding supply voltage, with the control casing, described control casing comprises housing and the step-up transformer and the CPU (central processing unit) that are arranged in the described housing, wherein said programmable AC power supply is connected to the input end of described step-up transformer, described central control unit is connected to come with described programmable AC power supply via serial line interface to be controlled the voltage of described programmable AC power supply, so that cable head of subsurface instrument voltage reaches its required value.
According to one embodiment of present invention, described transformer dividing potential drop correction coefficient is relevant with the step-up transformer in the control casing.Preferably, this transformer dividing potential drop correction coefficient is 1/3.
According to another embodiment of the present invention, the required value of described cable head of subsurface instrument voltage is 250VAC ± 5%.
Described modern control method comprises PID control, PI control, P control or closed-loop regulating system.
According to another embodiment of the present invention, logging system subsurface equipment power supply adoption rate factor P of the present invention adjusting.The adoption rate factor is regulated, and this is the characteristics in conjunction with the power supply of logging system subsurface equipment, the control method of employing, can quick and precisely regulate, and do not have overshoot, have at last one confirm to regulate, can guarantee under instrument starts that back loading is slight and changes supply voltage accurately.
Therefore, the program control method of supplying power to of fully-automatic intelligent operates among the interior CPU of control casing, by advanced person's modern control method, for example PID adjusting, and closed loop adjustment, the control programmable AC power supply reaches the cable head of subsurface instrument voltage request.For the method for the program control power supply of logging system subsurface equipment fully-automatic intelligent is to be different from the brand-new logging system subsurface equipment method of supplying power to that the conventional manual formula powers up mode.According to the programmable function that utilizes programmable AC power supply for the method for the program control power supply of logging system subsurface equipment fully-automatic intelligent of the present invention, the characteristics of coupling system, adopt modern control method, for example PID to regulate, control by close-loop feedback, automatically calculate execution by micro computer, be the subsurface equipment power supply, control cable end voltage.The program control method of supplying power to of fully-automatic intelligent does not need manual shift, all adopts robotization control, has accurate, the fireballing characteristics of supply voltage, also has automatic protection functions.
By according to of the present invention for the method for the program control power supply of logging system subsurface equipment fully-automatic intelligent can realize full-automatic power supply, do not need manual intervention, thereby can realize adding electric process quick and precisely, so that cable end voltage reaches 250VAC ± 5%.In addition; the method according to this invention can be according to different cable lengths; automatically adapt to; that is to say by the continuous regulation voltage output of feedback quantity; when having arrived feedback quantity and be 250VAC ± 5%, adjusting is finished, different cable lengths and loading condition; each voltage increment of regulating is different with total step number, and has intelligent automatic defencive function.
Description of drawings
The below further describes the present invention by reference to the accompanying drawings according to specific embodiment.Wherein
Accompanying drawing illustrates the control circuit figure that is used to the logging system subsurface equipment to realize the program control power supply of fully-automatic intelligent.
Embodiment
For the method for the program control power supply of logging system subsurface equipment fully-automatic intelligent is to be different from the brand-new logging system subsurface equipment power-on method that the conventional manual formula powers up mode.Conventional logging system adopts power supply to be input to step-up transformer, arrives adjustable transformer again, outputs on the logging cable at last.By the manual adjustments adjustable transformer, control output voltage by the slip-stick artist when powering up, reach control cable head of subsurface instrument voltage, for instrument powers up.This realizes by manual shift adjustable transformer knob, in operating process, operates the slip-stick artist and will fasten one's eyes on detection window, regulates lentamente, and the precision of the speed that powers up and cable head of subsurface instrument voltage depends on operation slip-stick artist's skill level.Hardware system is comprised of control casing and programmable AC power supply.The programmable AC power supply output voltage after the step-up transformer in the process control casing boosts, directly is output on the logging cable.
Operate among the CPU that controls in the casing for the program control method of supplying power to of logging system subsurface equipment fully-automatic intelligent according to of the present invention, modern control method, for example PID by the advanced person regulate, closed loop adjustment, the control programmable AC power supply reaches the cable head of subsurface instrument voltage request.
This unique figure illustrates the control circuit figure that is used to the logging system subsurface equipment to realize the program control power supply of fully-automatic intelligent according to an embodiment of the invention in the mode of schematic diagram.Described method of supplying power to adopts closed loop PI control method, and flush bonding processor Based Intelligent Control are adopted in all controls, need not manually-operated, can within the shortest time, reach cable head of subsurface instrument voltage 250VAC ± 5%.
According to this figure, the system of the program control power supply of fully-automatic intelligent comprises control casing and programmable AC power supply AC1, and wherein said control casing is arranged on the downstream as the programmable AC power supply of controlled device.The control casing comprises housing and the central processing unit CPU and the step-up transformer that are arranged in the housing.Programmable AC power supply AC1 is connected to the input end of step-up transformer set in the control casing.Central processor unit CPU in the control casing can control the output voltage of this programmable AC power supply AC1 by serial line interface, realize the automated intelligent power supply.
In this embodiment, adopt closed loop PI control method to realize the control of voltage that programmable AC power supply is exported, reach the voltage of down-hole cable end expectation.The PID control of in the present invention logging system subsurface equipment power supply station employing, only have P, be proportionality factor, this is the control method in conjunction with the characteristics employing of logging system subsurface equipment power supply, can quick and precisely regulate, and there is not overshoot, have at last one confirm to regulate, can guarantee under instrument starts that back loading is slight and changes supply voltage accurately.
In this embodiment, voltage-target being set is 250v.The voltage that this programmable AC power supply AC1 exports forms negative feedback via limiter, then forms deviation with set voltage-target by comparing element.Drawn deviation is fed to proportional component, in this proportional component, drawn deviation and transformer dividing potential drop correction coefficient 1/3 is multiplied each other, and obtains variable Δ V, and wherein this transformer dividing potential drop correction coefficient is relevant with the step-up transformer in the control casing.Drawn controlled quentity controlled variable Vset(n-1 in before circulation) add up with this variable Δ V, then obtain the controlled quentity controlled variable Vset(n of this circulation), wherein n is natural number.Described programmable AC power supply AC1 can be according to drawn Vset(n) export corresponding supply voltage, realize downhole logging instruments is powered in order to flow to the down-hole cable end.
The below is described as realizing the method for the program control power supply station of subsurface equipment fully-automatic intelligent employing:
In first step, the desired value of at first setting the instrument power supply is 250v.Before not powering up, down-hole cable end voltage measurement value of feedback is zero, and the difference that can calculate like this down-hole cable end voltage measurement value of feedback and desired value is 250v, multiply by transformer dividing potential drop correction coefficient 1/3, and obtaining variable Δ V is 83.3v.Owing to be also not power up, so Vset(n-1) be 0.According to Vset(n)=Vset(n-1)+Δ V=83.3v, draw controlled quentity controlled variable Vset(n) value, by control port, make programmable AC power supply output 83.3v.
In second step, down-hole cable end voltage measurement value of feedback and set-point 250v are asked poor, multiply by again transformer dividing potential drop correction coefficient 1/3, obtain Δ V, by formula Vset(n)=Vset(n-1)+Δ V, obtain Vset(n), again by control system control programmable power supply output Vset(n)
In third step, repeat the process of second step, constantly circulation in the process that constantly repeats, is judged down-hole cable end voltage measurement value of feedback at every turn, when it this scope of 250VAC ± 5% in the time, stop to circulate.
In the 4th step, wait for certain hour, again carry out second step, at this moment only need to carry out once, do not need circulation, the subsurface equipment automatic power has just been finished after finishing.Finally can reach the design power requirement, 250VAC ± 5%.
By above-described method, can realize full-automatic power supply, do not need manual intervention, thereby can realize adding electric process quick and precisely, so that cable end voltage reaches 250VAC ± 5%.In addition; the method according to this invention can be according to different cable lengths; automatically adapt to; that is to say by the output of the continuous regulation voltage of feedback quantity, when having arrived feedback quantity and be 250VAC ± 5%, adjusting is finished; different cable lengths and loading condition; each voltage increment of regulating is different with total step number, and has intelligent automatic defencive function, and wherein intelligent automatic defencive function for example can pass through overvoltage protection, overcurrent protection and overload protection realization.
Although invention has been described for above reference embodiment with reference to the accompanying drawings, should be understood that, the present invention is not limited thereto.On the contrary, it will be apparent to one skilled in the art that the present invention can be modified in many ways, and do not break away from the category of invention thought disclosed herein.
Claims (12)
1. method that is used to the program control power supply of logging system subsurface equipment fully-automatic intelligent said method comprising the steps of:
A) desired value that subsurface equipment is powered is set;
B) transformer dividing potential drop correction coefficient is set;
C) ask the desired value of down-hole cable end voltage measurement value of feedback and described instrument power supply poor and so that this difference multiply by described transformer dividing potential drop correction coefficient, thereby controlled amount is used for controlling the output of program control alternating voltage;
D) repeat c) step, constantly circulation in the process of constantly circulation, judges all whether described down-hole cable end voltage measurement value of feedback is in the scope of expectation value, and in this case at every turn, then stops circulation;
E) wait for certain hour, again carry out step c) one time, obtain being in the required value of the down-hole cable end voltage within definite range of tolerable variance.
2. method according to claim 1, wherein each voltage increment of regulating and total step number according to different cable lengths with loading condition and different.
3. method according to claim 1 and 2, the desired value of wherein said subsurface equipment power supply is set to 250v.
4. method according to claim 1 and 2, wherein method step a) in, before not powering up, the down-hole cable end is set, and to measure value of feedback be zero.
5. method according to claim 1 and 2, wherein said desired range of values is 250VAC ± 5%.
6. method according to claim 1 and 2, wherein said transformer dividing potential drop correction coefficient is set to 1/3.
7. method according to claim 1 and 2, wherein said range of tolerable variance is ± 5%.
8. system that is used to the program control power supply of logging system subsurface equipment fully-automatic intelligent, described system comprises:
Programmable AC power supply, described programmable AC power supply is arranged for according to given controlled quentity controlled variable and exports corresponding supply voltage, and
The control casing, described control casing comprises housing and the transformer and the CPU (central processing unit) that are arranged in the described housing, wherein said programmable AC power supply is connected to the input end of described transformer, described central control unit is connected to come with described programmable AC power supply via serial line interface to be controlled the voltage of described programmable AC power supply, so that cable head of subsurface instrument voltage reaches its required value.
9. system according to claim 8, wherein transformer dividing potential drop correction coefficient is relevant with described transformer.
10. system according to claim 9, wherein said transformer dividing potential drop correction coefficient is 1/3.
11. described system one of according to claim 8-10, the required value of wherein said cable head of subsurface instrument voltage is 250VAC ± 5%.
12. described system one of according to claim 8-10, the program control power supply adoption rate of wherein said fully-automatic intelligent factor is regulated.
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| CN201110210044.3A CN102902294B (en) | 2011-07-26 | 2011-07-26 | The program control method of supplying power to of logging system subsurface equipment fully-automatic intelligent and system |
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| CN201110210044.3A CN102902294B (en) | 2011-07-26 | 2011-07-26 | The program control method of supplying power to of logging system subsurface equipment fully-automatic intelligent and system |
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| US20110156653A1 (en) * | 2009-12-30 | 2011-06-30 | Hon Hai Precision Industry Co., Ltd. | Solar power supply system and driving method of same |
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2011
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| US6061634A (en) * | 1997-04-14 | 2000-05-09 | Schlumberger Technology Corporation | Method and apparatus for characterizing earth formation properties through joint pressure-resistivity inversion |
| CN2330787Y (en) * | 1997-06-17 | 1999-07-28 | 太原经纬电器有限公司 | Pit head low-voltage power supply installation for mine |
| US6522119B1 (en) * | 2001-09-11 | 2003-02-18 | Schlumberger Technology Corporation | Power source regulator for wireline cable system |
| CN201435678Y (en) * | 2009-06-26 | 2010-03-31 | 中国科学院电子学研究所 | High-voltage switch power used for traveling wave tube (TWT) power modulator |
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