CN204461880U - Core breakthrough pressure proving installation - Google Patents

Core breakthrough pressure proving installation Download PDF

Info

Publication number
CN204461880U
CN204461880U CN201520004791.5U CN201520004791U CN204461880U CN 204461880 U CN204461880 U CN 204461880U CN 201520004791 U CN201520004791 U CN 201520004791U CN 204461880 U CN204461880 U CN 204461880U
Authority
CN
China
Prior art keywords
core
hollow cavity
pressure
communicated
gas
Prior art date
Application number
CN201520004791.5U
Other languages
Chinese (zh)
Inventor
赵孟军
柳少波
刘可禹
姜林
洪峰
田华
郝加庆
马行陟
公言杰
卓勤功
鲁雪松
孟庆洋
达江
郑永平
田孝茹
Original Assignee
中国石油天然气股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中国石油天然气股份有限公司 filed Critical 中国石油天然气股份有限公司
Priority to CN201520004791.5U priority Critical patent/CN204461880U/en
Application granted granted Critical
Publication of CN204461880U publication Critical patent/CN204461880U/en

Links

Abstract

Core breakthrough pressure proving installation, comprising: the rock core fastener with hollow cavity, the accommodating and fixing core of cavity physical efficiency, and rock core fastener has first end and the second end; The liquid pipe be communicated with hollow cavity by the second end, liquid pipe is outside equipped with air-foam detector; The gas injection apparatus be communicated with hollow cavity, gas injection apparatus can to injecting gas in rock core fastener; By the air extractor that first end is communicated with hollow cavity, the gas of hollow cavity can be extracted out by air extractor.The air extractor of core breakthrough pressure proving installation of the present utility model by arranging, the hollow cavity of rock core fastener can be extracted out with the gas in the liquid be communicated with it pipe, make to be trapped in the bubble-break in liquid pipe, thus make test wait time shorten, improve testing time-effectiveness.

Description

Core breakthrough pressure proving installation
Technical field
The utility model belongs to petroleum exploration field, is specifically related to core breakthrough pressure proving installation.
Background technology
Measuring the breakthrough pressure of core when saturated wetting fluid, is evaluate core to oil gas sealing ability important parameter, significant to the storage condition of research oil gas.
Conventional displacement process measures the breakthrough pressure of core at present.The party's ratio juris is by saturated for rock core wetting fluid (being generally local water or kerosene), the core of saturated wetting phase is loaded in rock core fastener, after confined pressure is applied to core, connect nonwetting fluid (being generally air or nitrogen) to rock core fastener entrance point, according to predetermined time interval, increase gaseous tension gradually.When its pressure is enough to the saturated fluid in displacement core, namely gas form continuous flow in the hole of core, and when endpiece has gas to break through effusion continuously, the gaseous tension of corresponding core entrance point is the breakthrough pressure of this core.
Because gas is for cannot see impalpable gas, needs to be used for detecting it by certain technological means during test and whether breaking through effusion.During actual test, arrange at core endpiece the liquid pipe that fills wetting fluid, liquid pipe is outside equipped with air-foam detector, when gas breakthrough is overflowed, can discharge through described liquid pipe, can bubble be produced at gas in the process of liquid pipe, thus the air-foam detector be arranged on outside liquid pipe detect.
When utilizing liquid pipe and air-foam detector to measure, Problems existing is: after completing the test of core breakthrough pressure, liquid Guan Zhonghui is detained has bubble, because air-foam detector is sensitiveer, after core is removed, it still can detect bubble, affects the test of next core sample.Therefore, before carrying out next core sample test, need standing a period of time to make bubble froth breaking, make test wait time lengthening, be unfavorable for batch testing, conventional efficient is low.
Utility model content
For prior art when testing core breakthrough pressure, exist because bubble residence causes the problem of test wait time lengthening, the utility model provides a kind of core breakthrough pressure proving installation, and this core breakthrough pressure proving installation adopted technical scheme that solves the problem is as follows:
Core breakthrough pressure proving installation, comprising:
Have the rock core fastener of hollow cavity, the accommodating and fixing core of described cavity physical efficiency, described rock core fastener has first end and the second end;
By the liquid pipe that described second end is communicated with described hollow cavity, described liquid pipe is outside equipped with air-foam detector;
By the gas injection apparatus that described first end is communicated with described hollow cavity, described gas injection apparatus can to injecting gas in described rock core fastener, with the saturated wetting fluid in core of displacement;
The air extractor be communicated with described hollow cavity, the gas of described hollow cavity can be extracted out by described air extractor.
Core breakthrough pressure proving installation as above, comprise: the wetting fluid injection device be communicated with described hollow cavity by described liquid pipe, described wetting fluid injection device can inject wetting fluid in described rock core fastener, to make the saturated wetting fluid of core be clamped in wherein.
Core breakthrough pressure proving installation as above, described air extractor comprises vacuum pump and the first operation valve, and described first operation valve is arranged on the pipeline that described vacuum pump is communicated with described hollow cavity.
Core breakthrough pressure proving installation as above, comprise: described gas injection apparatus comprises gas cylinder and the second operation valve, the pipeline that described gas cylinder is communicated with described cavity body is provided with tensimeter, and described tensimeter can detect the pressure of the gas in the hollow cavity of described first end.
Core breakthrough pressure proving installation as above, comprise: the confined pressure injection device be communicated with described hollow cavity, described confined pressure injection device comprises high-pressure pump and the 3rd operation valve, and described high-pressure pump by injecting the confined pressure of confined pressure medium to the core applying predetermined pressure be contained in wherein in described hollow cavity.
Core breakthrough pressure proving installation as above, comprising: temperature controller, and described temperature controller can carry out temperature control to the core be clamped in described rock core fastener.
Core breakthrough pressure proving installation as above, comprising: described wetting fluid injection device comprises high-pressure pump and the 4th operation valve, and described high-pressure pump is communicated with described hollow cavity by described liquid pipe.
Core breakthrough pressure proving installation as above, described hollow cavity is connected by described liquid pipe blowdown piping, described blowdown piping is provided with emptying valve.
By above technical scheme, the beneficial effects of the utility model are: by arranging air extractor, before testing, use air extractor to be extracted out with the gas in the liquid pipe be communicated with it by the hollow cavity of rock core fastener, make to be trapped in the bubble-break in liquid pipe, thus overcome prior art and need standing certain hour, test next time can be carried out after bubble voluntarily froth breaking, cause the deficiency of test wait time lengthening, thus make the test wait time shorten of the core breakthrough pressure proving installation of present embodiment, improve testing time-effectiveness.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the core breakthrough pressure proving installation of the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1.Core breakthrough pressure proving installation, comprising: the rock core fastener 11 with hollow cavity 13, and described hollow cavity 13 can accommodating and fixing core 35, and described rock core fastener 11 has first end and the second end; The liquid pipe 29 be communicated with described hollow cavity 13, described liquid pipe 29 is outside equipped with air-foam detector 15; Described wetting fluid injection device is communicated with described hollow cavity 13 by described liquid pipe 29; By the gas injection apparatus that described first end is communicated with described hollow cavity 13, when after the saturated wetting fluid of core 35, described gas injection apparatus can to injecting gas in described rock core fastener 11, with the saturated wetting fluid in core 35 of displacement; By the air extractor that described first end is communicated with described hollow cavity 13, the gas of described hollow cavity 13 can be extracted out by described air extractor.
The beneficial effect of the core breakthrough pressure proving installation of present embodiment is: by arranging air extractor, before testing, use air extractor to be extracted out with the gas in the liquid pipe 29 be communicated with it by the hollow cavity 13 of rock core fastener 11, make to be trapped in the bubble-break in liquid pipe 29, thus overcome prior art and need standing certain hour, test next time can be carried out after bubble voluntarily froth breaking, cause the deficiency of test wait time lengthening, thus make the test wait time shorten of the core breakthrough pressure proving installation of present embodiment, improve testing time-effectiveness.
In order to make the saturated wetting fluid of core 35 to be measured, present embodiment also comprises: the wetting fluid injection device be communicated with described hollow cavity 13 by described liquid pipe 29, described wetting fluid injection device can inject wetting fluid in described rock core fastener 11, to make the saturated wetting fluid of core 35 be clamped in wherein, described wetting fluid injection device comprises high-pressure pump 17 and the 4th operation valve the 18, four operation valve 18 controls the wetting fluid injected.
The breakthrough pressure of core is gaseous tension when producing bubble, so the breakthrough pressure test of each core must treat that the complete emptying of bubble that a test produces is inchoate, otherwise after carrying out during a test, before the bubble be trapped in liquid pipe 29 can at the effect float downward of buoyancy when once testing, detected by air-foam detector 15, but now gas does not break through core in fact, cause final testing result distortion.And the bubble be trapped in liquid pipe 29 disappears need considerable time completely, its reason is: bubble passes into gas (present embodiment is the gas that gas injection apparatus injects to hollow cavity 13) produce to frothing agent (wetting fluid injected in hollow cavity 13 for wetting fluid device in present embodiment) solution, now gas is dispersed system, and the liquid film that gas shores frothing agent generation is dispersed system.After bubble is formed, the liquid that entraining air bubbles comes runs off downwards under gravity, and liquid film can be thinning gradually until disappear.But in the present embodiment, bubble volume is less, and without outer force-disturbance, thus make the environment residing for it comparatively stable, cause being trapped in liquid pipe 29 of its energy long-time stable.
Based on above-mentioned principle, present embodiment, by arranging air extractor, carries out pressure froth breaking to the bubble be trapped in liquid pipe 29.Described air extractor comprises vacuum pump 21 and the first operation valve 22, described first operation valve 22 is arranged on the pipeline that described vacuum pump 21 is communicated with described hollow cavity 13, open the first operation valve 22, start vacuum pump 21 gas in hollow cavity 13 is extracted out, pressure in hollow cavity 13 reduces, pressure in the liquid pipe 29 be communicated with it also decreases, and is trapped in bubble wherein and is bursting at the collision under the effect of inside and outside differential pressure, thus complete froth breaking.The test of the breakthrough pressure of next core can be carried out afterwards.
Described gas injection apparatus comprises gas cylinder 19 and the second operation valve 20, the pipeline that described gas cylinder 19 is communicated with described hollow cavity 13 is provided with tensimeter 31, described tensimeter 31 can detect the pressure of the gas in the hollow cavity 13 of described first end, when air-foam detector 15 detects in liquid pipe 29 have bubble, the gas inject pressure that now tensimeter 31 records is the breakthrough pressure of core 35.
Further, present embodiment also comprises: the confined pressure injection device be communicated with described hollow cavity 13, described confined pressure injection device comprises high-pressure pump 23 and the 3rd operation valve 24, and described high-pressure pump 23 to apply the confined pressure of predetermined pressure to the core 35 be contained in wherein by injecting confined pressure medium in described hollow cavity 13; In addition, present embodiment also comprises temperature controller 33, and described temperature controller 33 can carry out temperature control to the core 35 be clamped in described rock core fastener 11.Apply confined pressure to core 35 and core 35 is carried out temperature to control to be in order to real simulation ground environment, the confined pressure of applying can calculate according to following formula:
p H=0.010133(ρ DW)·H
Wherein: ρ d-core 35 density, g/cm 2;
ρ w-gas density, g/cm 2;
H-sampling depth, m.
In order to simulated formation temperature, can determine to be applied to the temperature on core 35 according to the data such as well testing, well logging.
In addition, hollow cavity 13 is connected by liquid pipe 29 blowdown piping 25, and described blowdown piping 25 is provided with emptying valve 27.During test, emptying valve 27 is opened, hollow cavity 13 near the second end is communicated with air by blowdown piping 25, and the hollow cavity 13 of close second end is maintained the standard atmospheric pressure, and the gas inject pressure recorded like this in the hollow cavity 13 of close first end is the breakthrough pressure of core 35.
Refer to Fig. 1.The workflow of the core breakthrough pressure proving installation of present embodiment is:
1), core 35 is loaded in the hollow cavity 13 of rock core fastener 11, close the 4th operation valve 18, first operation valve 22, second operation valve 20 and emptying valve 27, open the 3rd operation valve 24, start high-pressure pump 23, inject confined pressure medium by high-pressure pump 23 to hollow cavity 13, confined pressure is applied to core 35 wherein;
2) after, completing the applying of confined pressure, close the 4th operation valve 18, the 3rd operation valve 24, second operation valve 20 and emptying valve 27, open the first operation valve 22, the liquid pipe 29 that now hollow cavity 13 is communicated with it forms the space closed, start vacuum pump 21, gas in hollow cavity 13 and liquid pipe 29 is extracted out, is trapped in the bubble in liquid pipe 29 and vanishes under the effect of inside and outside differential pressure;
3), after froth breaking, close the first operation valve 22, the 3rd operation valve 24, second operation valve 20 and emptying valve 27, open the 4th operation valve 18, start high-pressure pump 17, in hollow cavity 13, inject wetting fluid;
4), when the saturated wetting fluid of core 35 being clamped in hollow cavity 13, close the first operation valve 22, the 3rd operation valve 24, the 4th operation valve 18, open the second operation valve 20 and emptying valve 27, start gas cylinder 19, in hollow cavity 13, injecting gas starts test, have bubble to produce when air-foam detector 15 detects in liquid pipe 29, now on tensimeter 31, the force value of display is the breakthrough pressure of core 35.
The core breakthrough pressure proving installation of present embodiment is by arranging air extractor, before testing, use air extractor to be extracted out with the gas in the liquid pipe 29 be communicated with it by the hollow cavity 13 of rock core fastener 11, make to be trapped in the bubble-break in liquid pipe 29, thus overcome prior art and need standing certain hour, test next time can be carried out after bubble voluntarily froth breaking, cause the deficiency of test wait time lengthening, thus make the test wait time shorten of the core breakthrough pressure proving installation of present embodiment, improve testing time-effectiveness.
The foregoing is only several embodiment of the present utility model, those skilled in the art can carry out various change or modification to the utility model embodiment according to content disclosed in application documents and not depart from spirit and scope of the present utility model.

Claims (8)

1. core breakthrough pressure proving installation, is characterized in that comprising:
Have the rock core fastener (11) of hollow cavity (13), described hollow cavity (13) can accommodating and fixing core, and described rock core fastener (11) has first end and the second end;
By the liquid pipe (29) that described second end is communicated with described hollow cavity (13), described liquid pipe (29) is outside equipped with air-foam detector (15);
By the gas injection apparatus that described first end is communicated with described hollow cavity (13), described gas injection apparatus can to injecting gas in described rock core fastener (11);
The air extractor be communicated with described hollow cavity (13), the gas of described hollow cavity (13) can be extracted out by described air extractor.
2. core breakthrough pressure proving installation as claimed in claim 1, it is characterized in that comprising: the wetting fluid injection device be communicated with described hollow cavity (13) by described liquid pipe (29), described wetting fluid injection device can inject wetting fluid, to make the saturated wetting fluid of core be clamped in wherein in described rock core fastener (11).
3. core breakthrough pressure proving installation as claimed in claim 2, it is characterized in that: described air extractor comprises vacuum pump (21) and the first operation valve (22), described first operation valve (22) is arranged on the pipeline that described vacuum pump (21) is communicated with described hollow cavity (13).
4. core breakthrough pressure proving installation as claimed in claim 3, it is characterized in that comprising: described gas injection apparatus comprises gas cylinder (19) and the second operation valve (20), the pipeline that described gas cylinder (19) is communicated with described cavity body is provided with tensimeter (31), and described tensimeter (31) can detect the pressure of the gas in the hollow cavity (13) of described first end.
5. core breakthrough pressure proving installation as claimed in claim 4, it is characterized in that comprising: the confined pressure injection device be communicated with described hollow cavity (13), described confined pressure injection device comprises high-pressure pump (23) and the 3rd operation valve (24), and described high-pressure pump by injecting the confined pressure of confined pressure medium to the core applying predetermined pressure be contained in wherein in described hollow cavity (13).
6. core breakthrough pressure proving installation as claimed in claim 5, it is characterized in that comprising: temperature controller (33), described temperature controller (33) can carry out temperature control to the core be clamped in described rock core fastener (11).
7. core breakthrough pressure proving installation as claimed in claim 6, it is characterized in that comprising: described wetting fluid injection device comprises high-pressure pump (17) and the 4th operation valve (18), described high-pressure pump is communicated with described hollow cavity (13) by described liquid pipe (29).
8. core breakthrough pressure proving installation as claimed in claim 7, it is characterized in that: described hollow cavity (13) has blowdown piping (25) by the connection of described liquid pipe (29), described blowdown piping (25) is provided with emptying valve (27).
CN201520004791.5U 2015-01-04 2015-01-04 Core breakthrough pressure proving installation CN204461880U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520004791.5U CN204461880U (en) 2015-01-04 2015-01-04 Core breakthrough pressure proving installation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520004791.5U CN204461880U (en) 2015-01-04 2015-01-04 Core breakthrough pressure proving installation

Publications (1)

Publication Number Publication Date
CN204461880U true CN204461880U (en) 2015-07-08

Family

ID=53668749

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520004791.5U CN204461880U (en) 2015-01-04 2015-01-04 Core breakthrough pressure proving installation

Country Status (1)

Country Link
CN (1) CN204461880U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105547848A (en) * 2016-01-13 2016-05-04 重庆科技学院 Mixed core testing chamber and mud rock breakthrough pressure testing device
CN105928795A (en) * 2016-06-15 2016-09-07 黑龙江科技大学 Method and device for measuring pressure resistance and compression modulus of discrete materials
CN109254134A (en) * 2017-07-12 2019-01-22 北京康普瑞基石油工程技术有限公司 A kind of new method and equipment measuring Rock resistivity Indication of Oil-Gas breakthrough pressure
CN109425543A (en) * 2017-08-31 2019-03-05 中国石油化工股份有限公司 A kind of two-way breakthrough pressure measurement device of rock sample and method
WO2019100812A1 (en) * 2017-11-23 2019-05-31 中国矿业大学 Gas escape pressure testing device and method
CN110044790A (en) * 2019-04-10 2019-07-23 中国科学院地质与地球物理研究所 A kind of measuring device and method of critical filling pressure

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105547848A (en) * 2016-01-13 2016-05-04 重庆科技学院 Mixed core testing chamber and mud rock breakthrough pressure testing device
CN105547848B (en) * 2016-01-13 2018-09-28 重庆科技学院 A kind of mixing rock core test cabinet and mud stone breakthrough pressure test device
CN105928795A (en) * 2016-06-15 2016-09-07 黑龙江科技大学 Method and device for measuring pressure resistance and compression modulus of discrete materials
CN105928795B (en) * 2016-06-15 2018-11-20 黑龙江科技大学 Measure the crushing resistance and compression modulus device and method of granular media
CN109254134A (en) * 2017-07-12 2019-01-22 北京康普瑞基石油工程技术有限公司 A kind of new method and equipment measuring Rock resistivity Indication of Oil-Gas breakthrough pressure
CN109425543A (en) * 2017-08-31 2019-03-05 中国石油化工股份有限公司 A kind of two-way breakthrough pressure measurement device of rock sample and method
WO2019100812A1 (en) * 2017-11-23 2019-05-31 中国矿业大学 Gas escape pressure testing device and method
RU2723232C1 (en) * 2017-11-23 2020-06-09 Чайна Юниверсити Оф Майнинг Энд Текнолоджи Device and method of experimental determination of gas breakthrough pressure
CN110044790A (en) * 2019-04-10 2019-07-23 中国科学院地质与地球物理研究所 A kind of measuring device and method of critical filling pressure
CN110044790B (en) * 2019-04-10 2020-06-19 中国科学院地质与地球物理研究所 Device and method for measuring critical filling pressure

Similar Documents

Publication Publication Date Title
CN105067781B (en) Foam flooding evaluation device and evaluation method thereof
CN103558136B (en) Damage of rock and Permeation Test System and method of testing under temperature stress hoop seepage flow coupling
US9841531B2 (en) Three-dimensional simulating device for the stratum stability in the natural hydrate exploitation
CN103206210B (en) Experimental apparatus for exploiting natural gas hydrate reservoir by means of thermal fluid fracturing
Ferrante et al. Experimental evidence of hysteresis in the head-discharge relationship for a leak in a polyethylene pipe
CN104596905B (en) Device and method for measuring permeability of rock in fracturing process
CN102830214B (en) Dynamic physical simulation experiment method for water invasion of fractured gas reservoir with bottom water and device thereof
CN102031955B (en) Ultrasonic-assisted reservoir stratum chemical blockage removal experimental facility and experimental method
CN101864949B (en) Test device and method for simulating acid etching crack flow guide capability
CN201265164Y (en) Base pit engineering seepage failure model test apparatus
CN103196762B (en) Experimental device and method for pulse hydrofracture transforming of shale gas storing layer
CN102192864B (en) High-temperature, high-pressure, and acid-resisting apparatus for foam generation and dynamic evaluation
CN105114062A (en) Testing device for simulating permeability rule of low-permeability horizontal well and testing method
CN103163057A (en) Testing device and measuring and calculating method for gas permeability of compact rock material
CN104101564A (en) Device and method for testing low-permeability core starting pressure gradient at high temperature and high pressure with unsteady state method
CN105178926B (en) Fractured-cavernous carbonate reservoir physical model, displacement simulation experimental provision and system
CN201724868U (en) Indoor device for simulating process of hydraulic fracture and rupture
CN104316449A (en) Experimental method and experimental device for determinating volcanic gas-water relative permeability
CN104500031A (en) Natural gas hydrate formation drilling simulator
CN202866800U (en) Horizontal well plugging simulation experiment device
CN105738248A (en) Gas absorption and desorption experimental device with controllable coal sample moisture content and experimental method thereof
CN203502388U (en) Rock damage and penetration testing device
CN104833618B (en) To heterogeneous reservoir simulate the method and apparatus of profile control in laboratory
US10801942B2 (en) Multi-functional multi-field coupling seepage experiment device and testing method thereof
CN102980828B (en) Apparatus and method for measuring gas phase saturation degree of single tube core during foam flooding process

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant