CN202101921U - Device for testing rock porosity - Google Patents

Device for testing rock porosity Download PDF

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Publication number
CN202101921U
CN202101921U CN2011202132986U CN201120213298U CN202101921U CN 202101921 U CN202101921 U CN 202101921U CN 2011202132986 U CN2011202132986 U CN 2011202132986U CN 201120213298 U CN201120213298 U CN 201120213298U CN 202101921 U CN202101921 U CN 202101921U
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China
Prior art keywords
pressure
pump
sample chamber
rock
sample
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Expired - Fee Related
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CN2011202132986U
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Chinese (zh)
Inventor
张承丽
殷代印
宋国亮
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Northeast Petroleum University
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Northeast Petroleum University
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Priority to CN2011202132986U priority Critical patent/CN202101921U/en
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Abstract

A device for testing rock porosity mainly solves the problem that pressure of the device for testing rock porosity in the prior art drops naturally after one-time pressurization in saturation samples, and the dropped pressure can not be supplied automatically. The device for testing rock porosity is characterized in that a liquid storing container (8), a vacuum pump (10), a buffer (11), a sample chamber (9), a high pressure pump (13) and a constant pressure controller (12) are communicated by the device through pipelines and valves, so the saturation medium and rock sample after vacuum treatment both flow into the sample chamber, and can keep constant and high in pressure under the effects of the high pressure pump (13) and the constant pressure controller (12), thereby finishing testing of rock porosity under the conditions of high pressure and high vacuum. The device for testing rock porosity achieves automatic supplement after natural pressure drop in saturation element of low permeable reservoir rock porosity testing samples, improves testing efficiency and lowers working intensity of workers.

Description

Be used to test the device of rock porosity
Technical field
The utility model relates to the device that carries out the rock porosity test on a kind of oil field.
Background technology
Rock porosity is claimed the blowhole rate again, is to weigh what a kind of parameter of contained volume of voids in the rock.Rock porosity can be divided into total porosity and net porosity.The rock total porosity is that all are communicated with the number percent with the appearance cumulative volume of the cumulative volume of disconnected hole and rock sample in the rock sample.The rock net porosity then refers to the volume of voids that is interconnected in the rock sample and the number percent of rock sample appearance cumulative volume.The rock porosity that core analysis testing laboratory is measured is the net porosity of rock usually.The rock porosity method of testing mainly contains two kinds at present, i.e. saturated liquid method and saturated gas method.The main flow process that adopts the saturated liquid method to measure the rock net porosity is: (1) sample oil removing; (2) baking appearance; (3) claim the dry core sample quality; (4) sample vacuumizes; (5) sample is saturated; (6) rock sample of weighing saturation testing medium; (7) the saturated rock sample of weighing in tested media.If do not consider washing oil, baking appearance, sample link such as find time, the factor that influence the saturated quality of rock sample mainly contains 2 points: the one, and the sample saturation element that pressurizes; The 2nd, the saturation element of sample under certain pressure.At present; When home and abroad application saturated liquid method is carried out the factor of porosity test, all in sample saturation technique link, have problems, that is: sample is suppressed saturation element employing manual work and is suppressed mode; One time pressure process needs the hundreds of commentaries on classics of hand shaken volume pump, and analyst's labour intensity is big.Even more serious is that the problem that the pressure that in the sample saturation history, exists descends naturally needs arrangement personnel break tour to open pressure charging system, keeps sample saturation pressure system constant.With the saturated of rock with large diameter sample is example; Saturation time must reach 36 hours, because the compressibility of saturated liquid and the impregnation of saturated media, in the factor of porosity specimen saturation history; The problem that exists saturation device pressure to descend naturally must arrangement personnel break tour ftercompction at any time.If can not keep saturation pressure constant, tested media just can not fully be saturated in the rock sample, causes the factor of porosity test number on the low side, directly has influence on important process such as oilfield reserve calculation of parameter.
Summary of the invention
The technical matters of mentioning in order to solve in the background technology; The utility model provides a kind of device that is used to test rock porosity; This kind rock porosity proving installation is connected liquid storage container, vacuum pump, impact damper, sample chamber and high-pressure pump and constant-voltage controller through pipeline; Make all to flow in the sample chamber, and under the effect of high-pressure pump and constant-voltage controller, keep constant, high pressure, can realize pressurization automatically and guarantee constant pressure through saturated media and the rock sample that vacuumizes processing; Improve testing efficiency, reduced working strength of workers.
The technical scheme of the utility model is: this kind is used to test the device of rock porosity; Comprise liquid storage container, vacuum pump, impact damper and sample chamber; In addition; Said device also comprises a high-pressure pump and a constant-voltage controller, and the signal input end of said high-pressure pump is connected to the control signal output ends of PID regulator, and the pump intake end of said high-pressure pump is connected to the sidewall inlet end of sample chamber; Be connected with valve to realize that the saturated media in the liquid storage container is vacuumized processing through pipeline between said liquid storage container and the vacuum pump; Be connected with valve to realize the processing that vacuumizes through pipeline between said sample chamber and the said vacuum pump, between sample chamber and vacuum pump, be provided with impact damper rock sample; Between said liquid storage container and sample chamber, be communicated with, to realize flowing into the sample chamber through the saturated media that vacuumizes processing through pipeline and valve; The pump intake end of said high-pressure pump connects compressed air source; Said constant-voltage controller is made up of pressure transducer and programmable controller; Said pressure transducer places in the sample chamber; Through signal cable pressure signal is outputed to the pressure signal input end of said programmable controller, said programmable controller is to PID regulator output error signal.
The utlity model has following beneficial effect: this kind device is connected liquid storage container, vacuum pump, impact damper, sample chamber and high-pressure pump and constant-voltage controller through pipeline; High-pressure pump has been introduced the PID controller to be controlled; Make thus through after in the saturated media that vacuumizes processing and the rock sample inflow sample chamber; Can under the effect of high-pressure pump and constant-voltage controller, keep constant, high pressure fast; Can realize pressurization automatically and guarantee constant pressure, improve testing efficiency, reduce working strength of workers.This device can guarantee that through the experiment proof factor of porosity sample is fully saturated in 36 hours, makes the inner complete saturated entering liquid of rock core hole, guarantees the accuracy of factor of porosity data, and has alleviated analyst's labour intensity greatly.
Description of drawings:
Fig. 1 is the composition synoptic diagram of the utility model.
1-liquid storage container inlet valve among the figure, 2-test fluid outlet valve, 3-liquid storage container outlet valve, 4-impact damper inlet valve; 5-impact damper outlet valve, 6-pressure transducer communicating valve, 7-high-pressure pump inlet valve, 8-liquid storage container; The 9-sample chamber, 10-vacuum pump, 11-impact damper; The 12-constant-voltage controller, 13-high-pressure pump, 14-PID regulator.
Embodiment:
Below in conjunction with accompanying drawing the utility model is described further:
At present, the oil field prospecting development difficulty is increasing both at home and abroad, and low hole, hypotonic, low abundance reservoir get more and more, and fine and close rock reservoir sample saturation element more and more becomes one of key factor that influences the rock porosity test mass.In recent years, in order to adapt to the needs of low permeability reservoir exploratory development, laboratory, domestic oil field is on the basis of conventional rock porosity measuring technology; All in development high pressure-high vacuum rock porosity measuring technology; The saturation pressure of rock sample progressively improves, and the problem that the manual compression labour intensity that sample saturation technique link exists reaches pressure need artificial compensation in the constant voltage saturation history has greatly become the key that influences the rock porosity test mass, so; Improve pressuring method; Alleviate personnel labor intensity, development and exploitation constant voltage function realize that control constant voltage process is the technical barrier that the oil field prospecting Development and Production needs to be resolved hurrily automatically.Exactly because also above reason just has the generation of present technique scheme.
By shown in Figure 1; This kind is used to test the device of rock porosity; Comprise liquid storage container 8, vacuum pump 10, impact damper 11 and sample chamber 9, in addition, said device also comprises a high-pressure pump 13 and a constant-voltage controller 12; The signal input end of said high-pressure pump 13 is connected to the control signal output ends of PID regulator 14, and the pump intake end of said high-pressure pump 13 is connected to the sidewall inlet end of sample chamber 9; Be connected with valve to realize that the saturated medias in the liquid storage container 8 are vacuumized processing through pipeline between said liquid storage container 8 and the vacuum pump 10; Be connected with valve to realize the processing that vacuumizes through pipeline between said sample chamber 9 and the said vacuum pump 10, between sample chamber 9 and vacuum pump 10, be provided with impact damper 11 rock sample; Between said liquid storage container 8 and sample chamber 9, be communicated with, to realize flowing into the sample chamber through the saturated media that vacuumizes processing through pipeline and valve; The pump intake end of said high-pressure pump 13 connects compressed air source; Said constant-voltage controller 12 is made up of pressure transducer and programmable controller; Said pressure transducer places in the sample chamber 9; Through signal cable pressure signal is outputed to the pressure signal input end of said programmable controller, said programmable controller is to PID regulator 14 output error signals.
This kind of device is saturated in the test of all kinds of rock porosity samples of Φ 2.5cm-Φ 12cm applicable to diameter.
This device adopts electronic control component to realize that low permeability reservoir rock porosity specimen saturation element is suppressed and the robotization of constant voltage.Become manual compression and be pressurization automatically, adopt the gas-liquid pressure-boosting pump to realize the saturated pressurization robotization of factor of porosity sample, maximum pressure can reach more than the 30MPa.In addition; In constant-voltage controller, can and use gas-liquid pressure-boosting pump and electronic force (forcing) pump; When the pressure in pressure transducer detects the sample chamber is lower than setting value, pressurize in the sample chamber by PID regulator control high-pressure pump, realized the automatic supply of pressure in the sample saturation history thereby programmable controller can send error signal to the PID regulator; Guaranteed that the factor of porosity sample is fully saturated in 36 hours; Make the inner complete saturated entering liquid of rock core hole, guarantee the accuracy of factor of porosity data, and alleviated analyst's labour intensity greatly.

Claims (1)

1. device that is used to test rock porosity; Comprise liquid storage container (8), vacuum pump (10), impact damper (11) and sample chamber (9); It is characterized in that: said device also comprises a high-pressure pump (13) and a constant-voltage controller (12); The signal input end of said high-pressure pump (13) is connected to the control signal output ends of PID regulator (14), and the pump intake end of said high-pressure pump (13) is connected to the sidewall inlet end of sample chamber (9); Be connected with valve to realize that the saturated media in the liquid storage container (8) is vacuumized processing through pipeline between said liquid storage container (8) and the vacuum pump (10); Be connected with valve to realize the processing that vacuumizes through pipeline between said sample chamber (9) and the said vacuum pump (10), between sample chamber (9) and vacuum pump (10), be provided with impact damper (11) rock sample; Between said liquid storage container (8) and sample chamber (9), be communicated with, to realize flowing into the sample chamber through the saturated media that vacuumizes processing through pipeline and valve; The pump intake end of said high-pressure pump (13) connects compressed air source; Said constant-voltage controller (12) is made up of pressure transducer and programmable controller; Said pressure transducer places in the sample chamber (9); Through signal cable pressure signal is outputed to the pressure signal input end of said programmable controller, said programmable controller is to PID regulator (14) output error signal.
CN2011202132986U 2011-06-22 2011-06-22 Device for testing rock porosity Expired - Fee Related CN202101921U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011202132986U CN202101921U (en) 2011-06-22 2011-06-22 Device for testing rock porosity

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Application Number Priority Date Filing Date Title
CN2011202132986U CN202101921U (en) 2011-06-22 2011-06-22 Device for testing rock porosity

Publications (1)

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CN202101921U true CN202101921U (en) 2012-01-04

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102706713A (en) * 2012-06-21 2012-10-03 中国石油集团西部钻探工程有限公司 Rock liquid saturation device
CN102841046A (en) * 2012-09-20 2012-12-26 中国石油大港油田勘探开发研究院 Method for measuring rock porosity and measuring device
CN103063818A (en) * 2012-12-27 2013-04-24 长安大学 Wetting-drying cycle tester for water rock
CN104713814A (en) * 2015-04-13 2015-06-17 西南石油大学 Real-time measurement device, measurement method and calculation method for permeability, porosity and compression coefficient of rock
CN109030783A (en) * 2018-08-21 2018-12-18 西南石油大学 A kind of rock-fluid reciprocation experimental system for simulating and method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102706713A (en) * 2012-06-21 2012-10-03 中国石油集团西部钻探工程有限公司 Rock liquid saturation device
CN102706713B (en) * 2012-06-21 2014-08-20 中国石油集团西部钻探工程有限公司 Rock liquid saturation device
CN102841046A (en) * 2012-09-20 2012-12-26 中国石油大港油田勘探开发研究院 Method for measuring rock porosity and measuring device
CN102841046B (en) * 2012-09-20 2014-10-29 中国石油大港油田勘探开发研究院 Method for measuring rock porosity and measuring device
CN103063818A (en) * 2012-12-27 2013-04-24 长安大学 Wetting-drying cycle tester for water rock
CN103063818B (en) * 2012-12-27 2015-07-15 长安大学 Wetting-drying cycle tester for water rock
CN104713814A (en) * 2015-04-13 2015-06-17 西南石油大学 Real-time measurement device, measurement method and calculation method for permeability, porosity and compression coefficient of rock
CN109030783A (en) * 2018-08-21 2018-12-18 西南石油大学 A kind of rock-fluid reciprocation experimental system for simulating and method

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120104

Termination date: 20120622

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