CN104020303A - Core high-temperature and high-pressure casting machine - Google Patents
Core high-temperature and high-pressure casting machine Download PDFInfo
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- CN104020303A CN104020303A CN201410256056.3A CN201410256056A CN104020303A CN 104020303 A CN104020303 A CN 104020303A CN 201410256056 A CN201410256056 A CN 201410256056A CN 104020303 A CN104020303 A CN 104020303A
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Abstract
The invention relates to a core high-temperature and high-pressure casting machine which comprises a displacement pump, a rock sample container, a sample container, a vacuum pump and a PLC (Programmable Logic Controller) control system, wherein the PLC control system comprises a PLC, a touch screen, a motor controller and an analog quantity module; the touch screen, the motor controller and the analog quantity module are connected by the PLC; the analog quantity module is connected with a pressure sensor and a temperature control module which is connected with a temperature sensor; the PLC is in control connection with a heating ring and the vacuum pump; the pressure sensor is connected with the displacement pump which is driven by a motor controlled by the motor controller; the temperature sensor and the heating ring are arranged on the circumferential outer wall of the rock sample container. The core high-temperature and high-pressure casting machine can be used for overcoming the defects of low working efficiency, low ultimate pressure and the like of a traditional casting machine and has the advantages of easiness in operation, strong practicability, high efficiency, high injection pressure, rapidity in vacuumization and the like, and the whole flow is intelligentized by using the core high-temperature and high-pressure casting machine.
Description
Technical field
The invention belongs to petroleum industry oil measuring technology, relate to a kind of rock core High Temperature High Pressure body of casting instrument.
Background technology
Body of casting instrument is that a kind of coloured liquid glue injects blowhole room device, under vacuum high-temperature condition of high voltage, make coloured liquid state colloid fully enter medium pore throat, be allowed to condition at again under uniform temperature and solidify, by perfusion, the rock body of casting after solidifying, can be made into casting body flake, because blowhole is had coloring agent filling, therefore very eye-catching under the microscope, easily identification, for study of rocks pore size, distribute and geometric shape, porosity type, average pore throat ratio, average pore radius, venturi, coordination number, fracture length and width, crack rate etc. provides effective way, for Comprehensive Evaluation of Reservoir provides important, reliability index.Therefore, body of casting instrument is a kind of important instrument of study of rocks storage and collection performance.
Use at present JS-3 type body of casting instrument comparatively widely to need a large amount of manual operations, inefficiency, unstable, practicality is not strong: in temperature rise process, because temperature is larger to fluctuating after design temperature, pressure changes irregular, often there will be hypertonia cause instrument warning and quit work, or the too small required pressure not reaching while perfusion of pressure, coloured liquid glue can not be noted into blowhole, the research evaluation of impact to reservoir, therefore, in perfusion with solidify in two processes, all need twice temperature adjustment, can leave after waiting pressure stability for twice; Can only vacuumize a pipe, vacuum pumping rate is slow at every turn, and noise is larger, takes out sebific duct easily stifled, cleans inconvenience; Exhaust rear temperature domain of walker large, perfusion and also can only manage for a time when curing, after having cast, the rock sample of cast is from rock sample container taking-up inconvenience; In addition, the oil pipe pipe of this type of body of casting instrument Bonding pressure pump and rock sample container is very little, and bad replacing, and the little blob of viscose after what rock sample container bottom occurred solidify often makes oil pipe blocking, affect instrument use; Also have the increasing along with petroleum industry exploratory development difficulty, exploratory development transforms to the poor reservoir of hole from the good reservoir of hole, and the bottleneck that traditional body of casting instrument extreme pressure is little more and more can not be able to not meet the demand of exploratory development.
Summary of the invention
The object of this invention is to provide a kind of rock core High Temperature High Pressure body of casting instrument, to solve the problem of inefficiency that the manual operation of existing rock core body of casting instrument brings, unstable, poor practicability.
For achieving the above object, the technical scheme of rock core High Temperature High Pressure body of casting instrument of the present invention is as follows: comprise displacement pump, rock sample container, sample container, vacuum pump and PLC control system, this PLC control system comprises PLC controller and touch-screen, electric machine controller and analog module by its connection, this analog module is connected with pressure transducer and temperature control module, this temperature control module is connected with temperature sensor, PLC controller control linkage heating collar and described vacuum pump; Described pressure transducer is connected with displacement pump, and this displacement pump is by the driven by motor of motor controller controls, and described temperature sensor and heating collar are located at described rock sample container peripheral outer wall.
Described sample container is three and contains sample test tube.
Described Sheng sample test tube is fixedly arranged on rock sample internal tank by clamping device.
Described clamping device is to load three iron baskets of containing sample test tube, and this iron basket top and middle part correspondence are provided with the fastener of containing sample test tube for fixing.
Also be provided with the cleek of containing sample test tube for taking out.
Described displacement ultimate pressure of a pump is 80MPa.
Described displacement pump is connected with an oil holder, and the right of displacement pump is provided with pressurizing valve, and the left side is provided with liquid sucting valve.
Described rock sample container top is provided with bleed-off valve.
Described PLC controller is by Control heating collar and vacuum pump.
In rock core High Temperature High Pressure body of casting instrument of the present invention, displacement pump is connected with pressure transducer, when hypertonia or too low moment complete step-down or pressurization automatically, remain pressure variation ± 0.05MPa, can control efficiently and complete vacuumize simultaneously, take out glue, perfusion, solidify rock sample test tube 3 and manage 60 left and right rock samples, the temperature and pressure autostable in perfusion and curing two stages, PLC control system only need just can complete perfusion and solidification process on touch-screen, realize intelligent, overcome traditional body of casting instrument inefficiency, the defects such as extreme pressure is little, the whole flow process that makes instrument realizes intelligent, have easy to operate, practical, efficiency is high, injection pressure is high, vacuumize the advantages such as fast.Lithology container is mixed cleek, after having cast, sample pipe can easily be taken out at every turn.Rock sample container top is established a bleed-off valve, when every sub-sampling, has overbottom pressure for preventing in container, and available bleed-off valve bleeds off pressure, safer.
Brief description of the drawings
Fig. 1 is embodiment of the present invention mechanical construction drawing;
Fig. 2 is the control system figure of the embodiment of the present invention.
Embodiment
Rock core High Temperature High Pressure body of casting instrument as shown in Figure 1, 2 comprises high pressure displacement system, vacuum system, core chamber's system and PLC control system.
(1) high pressure displacement system: for power source being provided to the pressurization of rock sample container, mainly drive displacement pump 1 to complete by high power motor, extreme pressure is 80MPa, high power motor is by motor controller controls, and this electric machine controller is controlled by PLC output.Displacement pump completes into pump, moves back two processes of pump, enters pump pressurization, moves back pump step-down, is connected with pressure transducer, can automatically complete step-down or pressurization when hypertonia or when too low, remains pressure variation ± 0.05MPa.
(2) vacuum system: adopt Britain Edward RV12 type vacuum pump 8, air capacity is large, vacuumizes fast; Sample container 5 is three and contains sample test tubes, and three vacuumize and contain sample test tube and be connected with vacuum pump, three vacuum Sheng sample test tubes of three vacuum valve control, disposablely can take out three pipes simultaneously or vacuumize separately, rock sample hollow aspiration is gone out, make resin can enter blowhole space, extreme pressure-1MPa; The sebific duct of taking out of containing sample test tube top strengthens, and takes out glue efficiency and improves, and take out the difficult obstruction of sebific duct, easy to clean.
(3) core chamber's system: Main Function is the sample container 5 that exhausts vacuum well (can be simultaneously three test tubes) to be put into rock sample container 6 pressurize and heat, make coloured liquid glue at a certain temperature (as 75 DEG C) first reduce viscosity, be pressed into the pore space of rock at condition of high voltage, and then in uniform temperature (as 115 DEG C), it solidified.
Rock sample container strengthens, can put into three pipe samples pours into simultaneously, contain sample test tube and be fixedly arranged on rock sample internal tank by clamping device, clamping device is to load three iron baskets of containing sample test tube, and this iron basket bottom surface is evenly laid with air hole, and iron basket top and middle part correspondence are provided with the fastener of containing sample test tube for fixing, this fastener is card, card is circumferentially with three holes, and corresponding setting the in hole of two cards, can play fixing, guide effect.In rock sample container, put into and can just load three iron baskets that fill the Sheng sample test tube of rock sample, mix a cleek, after having cast, sample pipe can easily be taken out at every turn.Rock sample external container has one deck heating and thermal insulation cover 7 and temperature sensor, and be connected with warning device 3, the variation of temperature sensor that can be sensitive, but occur when temperature or pressure bear the limit higher than instrument reporting to the police, rock sample container top has a bleed-off valve, when every sub-sampling, in container, there is overbottom pressure for preventing, available bleed-off valve bleeds off pressure, safer, the bottom of rock sample container is provided with a through hole, and vacuum pump can carry out vacuum pumping to rock sample container by this through hole.
(4) PLC control system: be located in a control box 4, this control box 4 is located on an operator's console 2, the man-machine interface of control system is MCGS the Kunlun on-state touch-screen, control core module is FATEK grand FBs-32MATPLC forever, driver is Delta servo-drive system, pressure survey is precision pressure sensor, temperature survey is PT100 temperature probe, and whole control core is divided into five modules: vacuum tank, automatically solidify, force (forcing) pump, parameter correction, temperature programme PID be from adjusting control.
As shown in Figure 2, PLC control system comprises PLC controller and touch-screen, electric machine controller and analog module by its connection, this analog module Bonding pressure sensor and temperature control module, this temperature control module connects temperature sensor, PLC controller control linkage heating collar and vacuum pump; Pressure transducer is connected with displacement pump.
PLC control system adopts touch-screen as order input and shows output device, and the control core of system is PLC, and whole filling process only need be completed on touch-screen, realizes intelligent.Whole control core is divided into five modules: vacuum tank, automatically solidify, force (forcing) pump, parameter correction and temperature programme PID be from adjusting control.
(1) vacuum tank: three vacuum of vacuum tank control module control are contained sample test tube, the temperature of each test tube can be set respectively, 1-3 test tube can vacuumize individually or simultaneously, touch screen interface can display setting temperature, vacuum tank Current Temperatures, vacuum tank current pressure and working time of vacuumizing, a key zero clearing as required, also be provided with a blower fan button at this interface, in temperature sweltering heat, can open blower fan to ensure that instrument normally moves.
(2) automatically solidify: automatically solidify control module can realize perfusion, solidify two time periods automatically complete, when solidify end after, instrument quits work automatically.Maximum working pressure (MWP) can reach 80MPa, adjustable as required, maximum operation temperature can reach 200 DEG C, perfusion, curing two phase temperature differences, also can set as required, has a pump speed to set on interface, the highest 10.00mL/min that is set to, pump speed is higher, enters pump or move back pump amount larger, and corresponding pressure lifting is also faster.Set perfusion, solidify each required time and corresponding temperature and pressure, click and start, instrument is started working, temperature, pressure start to rise, reach after setting value, pressure variation ± 0.05MPa, when pressure moves back pump during higher than set pressure, enters pump during lower than set pressure, temperature variation ± 0.5 DEG C, the pilot lamp of heating during lower than setting value is opened, and the pilot lamp of heating while being equal to or higher than setting value closes, after infusion time is complete, automatically enter cure stage, temperature variation is identical with perfusion phase, and when solidifying after end, instrument quits work.After instrument testing is good, whole process automatically completes, and only needing click to start can be from people.In casting sample process, cause instrument cisco unity malfunction for preventing from having a power failure, Deng when incoming call start, time schedule bar on automatically curing control module display screen is recording the time of instrument work, deducting time on progress bar with each phases-time is also to need to continue perfusion or curing time, after setting, click and start can continue to cast sample, can not cause sample to scrap.
(3) force (forcing) pump: force (forcing) pump is perfusion, curing manual module.While using instrument for the first time, need to be to displacement pump the inside hydraulic oil filling, what be connected with displacement pump has an oil holder, opens the pressurizing valve on displacement pump the right, the liquid sucting valve of closing the displacement pump left side, point is separated the imbibition in force (forcing) pump module interface, displacement pump starts imbibition, until arrive into pump spacingly, stops imbibition, add appropriate hydraulic oil to rock sample receptacle, can start to cast sample work.On interface, there are crawl or continuous button, click " crawl ", double-click " continuously ", when crawl, pressurization or imbibition need to be pressed the button always and could be worked, and consecutive hours only need be clicked pressurization or imbibition gets final product work, and this module has pressure setting, Temperature Setting, pump speed setting, working time etc. equally, different is in perfusion and solidifies two stages, need to regulate temperature twice.
(4) parameter correction: parameter has the setting of pressure return difference value, pressure coefficient to set and real-time pressure zero clearing.Can set pressure return difference value and pressure coefficient at the parameter value entering after parameter setting interface on some screen, press and determine that key determines setting value, pressing disappears setting.Pressing reset button can be to the zero clearing of real-time pressure value.
Pressure coefficient K computing method:
Wherein, K is correction coefficient; K ' is former correction coefficient; P
realfor the actual numerical value of external meters measurement; P
surveyfor touch-screen shows numerical value.
(5) temperature programme PID is from the control of adjusting: in parameter setting interface, click the blank space in its upper left corner, can eject pid parameter adjustment interface, adjustable P, I, tri-parameters of D realize heating up and control.
Get the poor Yichuan sag of physical property and collect 60 of 2 well core samples, by its shaping numbering, sequentially pack 3 body of casting rock sample test tubes (each rock sample test tube multipotency fill 22 samples) into:
Use traditional body of casting instrument, tradition body of casting instrument can only vacuumize a pipe at every turn, minimum 2 hours consuming time, casting sample one is managed, pour into 8 hours, solidify 8 hours, different with phase temperature, the general each needs of each phase temperature and pressure stability 2 hours, temperature and pressure is unstable can not be from people, completing 60 samples need to vacuumize 3 times, perfusion, solidify and altogether need 3 days used times, most of the time staff must observe the variation of temperature and pressure during this time, can not take into account other work, do not reach the reasonable pool of working time, casting finishes after bundle, sampling need to be pressed from both sides rock sample test tube with tweezers, the inconvenient while is easy contaminated samples platform also, pressure less (generally lower than 40MPa) during due to perfusion, sample factor of porosity is 2% time, coloured liquid glue just can not pour into into substantially, use the body of casting instrument after improving, manage sample 60 times although once can cast sample 3, can only a pipe but vacuumize, need the darg time consuming time, after perfusion phase temperature, pressure is stable, solidify and regulate temperature-time to evening, need staff to work overtime to stay up late to observe temperature and pressure stable, not only consuming time, be also unfavorable for staff's health, and working pressure does not change, not too many improvement compared with traditional body of casting instrument.
Use this rock core High Temperature High Pressure body of casting instrument, 60 3 pipe samples can vacuumize simultaneously, take out glue simultaneously, afterwards 3 pipes are put into rock sample container simultaneously, pressure, infusion time, filling temperature set time, after each setting parameter such as solidification temperature is good, only need click start button in the automatic solidification interface of touch-screen, instrument can start normal work, temperature, pressure autostable, perfusion, curing two stages carry out automatically, after the normal work of instrument, staff can leave, carry out other work, time is fully used, and the perfusion of 60 samples and curing only needs just can complete for one day, greatly improve work efficiency, casting finishes after bundle, sampling only need can be taken out three pipe samples with a cleek simultaneously, this time test perfusion and solidifying pressure are arranged on 45MPa, the coloured liquid glue of the sample of factor of porosity in 1.8% left and right can pour into into substantially, if pressure setting is higher, can note into pore space also just less, can better evaluate the reservoir of poor properties.
Claims (9)
1. rock core High Temperature High Pressure body of casting instrument, it is characterized in that, comprise displacement pump, rock sample container, sample container, vacuum pump and PLC control system, this PLC control system comprises PLC controller and touch-screen, electric machine controller and analog module by its connection, this analog module is connected with pressure transducer and temperature control module, this temperature control module is connected with temperature sensor, PLC controller control linkage heating collar and described vacuum pump; Described pressure transducer is connected with displacement pump, and this displacement pump is by the driven by motor of motor controller controls, and described temperature sensor and heating collar are located at described rock sample container peripheral outer wall.
2. rock core High Temperature High Pressure body of casting instrument according to claim 1, is characterized in that: described sample container is three and contains sample test tube.
3. rock core High Temperature High Pressure body of casting instrument according to claim 2, is characterized in that: described Sheng sample test tube is fixedly arranged on rock sample internal tank by clamping device.
4. rock core High Temperature High Pressure body of casting instrument according to claim 3, is characterized in that: described clamping device is to load three iron baskets of containing sample test tube, and this iron basket top and middle part correspondence are provided with the fastener of containing sample test tube for fixing.
5. rock core High Temperature High Pressure body of casting instrument according to claim 4, is characterized in that: be also provided with the cleek of containing sample test tube for taking out.
6. rock core High Temperature High Pressure body of casting instrument according to claim 1, is characterized in that: described displacement ultimate pressure of a pump is 80MPa.
7. rock core High Temperature High Pressure body of casting instrument according to claim 1, is characterized in that: described displacement pump is connected with an oil holder, and the right of displacement pump is provided with pressurizing valve, and the left side is provided with liquid sucting valve.
8. rock core High Temperature High Pressure body of casting instrument according to claim 1, is characterized in that: described rock sample container top is provided with bleed-off valve.
9. according to the rock core High Temperature High Pressure body of casting instrument described in any one in claim 1-8, it is characterized in that: described PLC controller is by Control heating collar and vacuum pump.
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| CN201410256056.3A CN104020303B (en) | 2014-06-10 | 2014-06-10 | Rock core HTHP body of casting instrument |
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| CN201410256056.3A CN104020303B (en) | 2014-06-10 | 2014-06-10 | Rock core HTHP body of casting instrument |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107100602A (en) * | 2017-04-25 | 2017-08-29 | 中国石油化工股份有限公司 | A kind of microbial oil displacement 3 d scale model automatic vacuum and saturation device |
| CN108709783A (en) * | 2018-05-17 | 2018-10-26 | 长江大学 | Artificial cores preparation facilities and preparation method thereof |
| CN109669417A (en) * | 2018-12-25 | 2019-04-23 | 西安拽亘弗莱工业自动化科技有限公司 | Electric cam vacuum blade bowel lavage machine control system and method based on Soft- PLC |
| CN111157310A (en) * | 2019-12-31 | 2020-05-15 | 中国石油天然气股份有限公司 | Rock casting body slice die-casting preparation method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100602A (en) * | 2017-04-25 | 2017-08-29 | 中国石油化工股份有限公司 | A kind of microbial oil displacement 3 d scale model automatic vacuum and saturation device |
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| CN108709783A (en) * | 2018-05-17 | 2018-10-26 | 长江大学 | Artificial cores preparation facilities and preparation method thereof |
| CN109669417A (en) * | 2018-12-25 | 2019-04-23 | 西安拽亘弗莱工业自动化科技有限公司 | Electric cam vacuum blade bowel lavage machine control system and method based on Soft- PLC |
| CN111157310A (en) * | 2019-12-31 | 2020-05-15 | 中国石油天然气股份有限公司 | Rock casting body slice die-casting preparation method |
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| CN104020303B (en) | 2016-05-04 |
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