CN107991345A - Multipair radial measurement long rock core holder - Google Patents
Multipair radial measurement long rock core holder Download PDFInfo
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- CN107991345A CN107991345A CN201710968720.0A CN201710968720A CN107991345A CN 107991345 A CN107991345 A CN 107991345A CN 201710968720 A CN201710968720 A CN 201710968720A CN 107991345 A CN107991345 A CN 107991345A
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- core
- clamper
- plug
- radial direction
- chamber
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/041—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body
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- Health & Medical Sciences (AREA)
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- General Health & Medical Sciences (AREA)
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- Geophysics And Detection Of Objects (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention discloses multipair radial measurement long rock core holder, including clamper cylinder, rubber sleeve, core chamber's bracket, plug system, measuring system and confined pressure pump, the confined pressure chamber of annular space is formed between clamper cylinder and rubber sleeve, rubber sleeve parcel forms core chamber, core chamber's bracket is arranged on core chamber bottom, plug system includes the input end plug and port of export plug positioned at clamper both ends, measuring system includes insulation sleeve, saturation degree probe and radial direction measuring point, clamper drum surface diametrically offers aperture, insulation sleeve is engaged with radial direction measuring point, saturation degree probe is arranged in insulation sleeve, saturation degree probe is connected after passing through rubber sleeve with long cores, confined pressure pump presses hole to be communicated with confined pressure chamber by pipeline via the ring on clamper cylinder.The formation condition of clamper simulation oil-gas reservoir is, it can be achieved that the real-time measurement of multi-point radial resistivity, by logging and Instrument Measuring Resistivity of Carbon Products detection resistance rate change curve, specifies remaining oil distribution position and the rule of rock core.
Description
Technical field
The invention belongs to oil gas experimental technique field, is related to a kind of measuring system of Remaining Oil And Gas distribution, more particularly to one
The long rock core holder of multipair radial measurement long cores resistivity of kind.
Background technology
Most of oil-gas reservoir comes into development late stage in national or even world wide at present, and Remaining Oil And Gas is taped the latent power always
It is the hot and difficult issue of gas industries.Research Numerical Simulation Techique is the important means that Remaining Oil And Gas is taped the latent power, its basis is foot
Enough complete geology and oil gas data, but current technology condition can not meet.Scene utilizes pressure drop during vexed well after water filling
Well Test Technology, the technology are based on material balance principle, and the oily saturation of oil gas field block is solved with reference to more round well test datas
Degree, but since Well Test Data Analysis Method needs a series of assumed condition, cause this method that also there is limitation.
Based on this, laboratory facilities become the most representational technical method that Remaining Oil And Gas is taped the latent power.Skill is measured in laboratory
Art has developed the hydrocarbon saturation during the multiple means such as sound, light, electricity measurement rock core water drive oil, mainly includes ultrasonic pulse weight
The methods of legal, landsonar method, nuclear magnetic resonance technique, Computerized chromatographic (CT) technology, chlorine energy method and resistivity logging and skill
Art.Wherein resistivity method due to its principle it is readily understood, equipment is easy to operate and is used widely.Conventional resistive rate instrument is in rock core
Two termination probes, obtain a resistivity curve by measuring the resistivity during water drive oil at different moments, pass through explanation
Grease saturation degree at different moments during water drive oil is can obtain, limitation is that the saturation degree that can not measure rock core difference section becomes
Change, therefore the distribution situation of remaining oil cannot be obtained.
The content of the invention
The object of the present invention is to provide a kind of long rock core holder of multipair radial measurement rock core resistivity, by multipair
Point measurement long cores radial direction resistivity, solves to grow along rock core during existing resistivity meter core holding unit can not measure water drive oil
Spend the limitation of each section of oil and water zonation.
In order to solve the above-mentioned technical problem, the present invention is accomplished by the following way：
Multipair radial measurement long rock core holder, including clamper cylinder, rubber sleeve, core chamber's bracket, plug system,
Measuring system and confined pressure pump, the clamper cylinder are located at the outermost of core holding unit, and rubber sleeve is arranged at clamper cylinder
Inside, and between clamper cylinder and rubber sleeve formed annular space confined pressure chamber, rubber sleeve parcel form core chamber, the rock core
Room bracket is arranged on core chamber bottom to be multiple, and the plug system includes input end plug and port of export plug, input end block up
Head and port of export plug are located at the both ends of core holding unit respectively, for blocking the core chamber of core holding unit, the measurement system
System includes insulation sleeve, saturation degree probe and radial direction measuring point, and clamper drum surface diametrically offers aperture, the insulation sleeve
It is connected jointly with aperture after being engaged with radial direction measuring point, saturation degree probe is arranged in insulation sleeve, and saturation degree probe passes through rubber
It is connected after gum cover with long cores, ring pressure hole is additionally provided with clamper cylinder, the confined pressure pump presses hole by pipeline via ring
Communicated with confined pressure chamber.
Further, the radial direction measuring point is formed to a measurement, and the spacing of two radial direction measuring points is 100mm.
It is right that the long rock core holder co-exists in radial direction measuring point 12.
The radial direction measuring point of the clamper is connected with logging, all radial direction measuring point resistivity of connecting detection at logging
Resistivity testing instrument.
The input end plug is connected with the input end of displacement module, and port of export plug connects with metering module, ring die block
Connect, ring pressure hole is connected with confined pressure module.
Compared with prior art, the device have the advantages that：
1st, propose first by the saturation degree change information of multipair radial measurement long cores each position, perfect remaining oil
The test method of qi leel cloth laboratory experiment；
2nd, can fully simulated formation displacement environment, and can be by multiple short rock cores splicings, so as to convenient using long cores
Realize the oil and water zonation rule after displacement under different rhythm syntagmatics；
3rd, multipair radial measurement can realize the monitoring of the saturation degree change of long cores diverse location, easy to study different drives
For condition, different displacement fluid types, the oil and water zonation rule under different displacement modes in rock core.
4th, clamper can simulate the confined pressure and ring pressure suffered by the long cores of live industrial and mineral condition.
Multipair point radial direction resistivity measurement long rock core holder provided by the invention, presses hole to inject liquid and formed and encloses by ring
Pressure, simulates the formation condition of oil-gas reservoir, and displacement module changes pressure, flow velocity and the displacement mode of displacement, during water drive oil,
The real-time measurement of multi-point radial resistivity can be achieved, displacement process andesinite can detect by logging and Instrument Measuring Resistivity of Carbon Products
The change in resistance curve of heart each position, is explained using resistivity, so that the rock core clearly under the conditions of the pores is oozed is in water drive
Remaining oil distribution position and the regularity of distribution after oily process.
Brief description of the drawings
Fig. 1 is the structure diagram of core holding unit of the present invention.
Each mark is respectively in figure：1st, input end plug；2nd, rubber sleeve；3rd, clamper cylinder；4th, port of export plug；5、
Core chamber's bracket；6th, insulation sleeve；7th, saturation degree probe；8th, radial direction measuring point；9th, confined pressure pumps.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is described in further detail.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention,
It is not used to limit invention.
As shown in Figure 1, multipair radial measurement long rock core holder, including clamper cylinder 3, rubber sleeve 2, core chamber's support
Frame 5, plug system, measuring system and confined pressure pump 9, the clamper cylinder is located at the outermost of core holding unit, and rubber is arranged
The inside of clamper cylinder is placed in, and the confined pressure chamber of annular space is formed between clamper cylinder and rubber sleeve, rubber sleeve parcel is formed
Core chamber, core chamber's bracket are arranged on core chamber bottom to be multiple, and the plug system includes input end plug 1 and outlet
Plug 4 is held, input end plug and port of export plug are located at the both ends of core holding unit respectively, for blocking the rock of core holding unit
Ventricle, the measuring system include insulation sleeve 6, saturation degree probe 7 and radial direction measuring point 8, and clamper drum surface is diametrically opened
Equipped with aperture, the insulation sleeve is connected with aperture jointly after being engaged with radial direction measuring point, and saturation degree probe is arranged in insulation sleeve,
And saturation degree probe pass through rubber sleeve after be connected with long cores, ring pressure hole, confined pressure pump are additionally provided with clamper cylinder
Hole is pressed to be communicated with confined pressure chamber via ring by pipeline.
Diametrically perforate on stainless steel cylinder, forms to a measuring point, which is at the same time saturation degree measuring point, pressure-measuring-point
And temperature point, two radial direction measuring points at intervals of 100mm, it is right which co-exists in radial direction measuring point 12.
Rock sample is put into core chamber, is pumped by confined pressure and adds confined pressure, simulation core formation condition to rock core, and ensures that measuring point is visited
Coming into full contact with for pin and rock core, adds axis pressure with the reservoir stress environment of simulation core, and ensures the splicing compacting of long cores, by rock
The inlet union of ventricle and the input end of displacement module connect, and the port of export and metering module, the ring die block of core chamber connect
Pick up and, ring pressure hole is connected with confined pressure module；Press hole to inject confined pressure to rock core surrounding by ring, simulate country rock pressure
Situation；Radial direction measuring point is connected with logging, and logging can be completed and the connection of all radial direction measuring points pair, logging in one second
It is connected with Instrument Measuring Resistivity of Carbon Products, whenever logging connects a pair of of radial direction measuring point, Instrument Measuring Resistivity of Carbon Products detects to obtain the point position
Resistivity information, displacement module changes pressure, flow velocity and the displacement mode of displacement, by logging and Instrument Measuring Resistivity of Carbon Products,
The change in resistance curve of each point position in whole displacement process is obtained, so as to obtain the saturation degree change in displacement process
Rule.
Further, clamper one end is provided with three inlet unions at fluid inlet end during for simulation core displacement, separately
One end is provided with the discharge coupling of a fluid outflow；The rock sample stored in core chamber isCylinder.
The material of core chamber's bracket of core chamber bottom is stainless steel 306L, is ensured when long cores are spliced to form by several short rock cores,
Core chamber will not influence displacement result because bending.
Multipair radial measurement long rock core holder needs to meet：Can simulation oil field produced on-site when, suffered by long cores
To the fluid driving forces situation that is subject to of confined pressure situation, the suffered stream pressure situation of long cores and long cores internal flow；And energy
By logging and Instrument Measuring Resistivity of Carbon Products enough in experiment, the resistivity for obtaining each radial direction point position in experimentation is bent
Line, so as to obtain the change of the saturation degree in displacement process.
Long rock core holder provided by the invention, clamper cylinder are stainless steel, can bear the pressure of 80MPa, mould
Intend the confined pressure that mining site rock sample is born；Core chamber's frame is also stainless steel, can bear the pressure of 80MPa, mainly for making rock
Any possible flexural deformation does not occur for ventricle.Input end plug position increase axis pressure system, can simulation core in formation condition
Under stress state, while can also ensure when long cores are spliced by several small rock cores, the compacting between core intersection.Folder
Diametrically saturation degree measuring point is offered on holder cylinder, measuring point built-in insulation set and saturation degree probe, probe pass through rubber sleeve
It is connected with rock core, mainly for connecting the positive and negative anodes interface of Instrument Measuring Resistivity of Carbon Products.Logging can in one second with all footpaths
Connected to opposite measuring point, logging is connected with Instrument Measuring Resistivity of Carbon Products, both collective effects can realize each measuring point in displacement process
The change in resistance curve of position can all obtain.The apparatus structure is simple, highly practical, has stronger popularization with applying valency
Value.
The foregoing is merely a prefered embodiment of the invention, is not intended to limit the invention, it is all the present invention spirit and
All any modification, equivalent and improvement made within principle etc., should all be included in the protection scope of the present invention.
Claims (6)
1. multipair radial measurement long rock core holder, it is characterised in that：Including clamper cylinder, rubber sleeve, core chamber's bracket,
Plug system, measuring system and confined pressure pump, the clamper cylinder are located at the outermost of core holding unit, and rubber sleeve is arranged at folder
The inside of holder cylinder, and the confined pressure chamber of annular space is formed between clamper cylinder and rubber sleeve, rubber sleeve parcel forms core chamber,
Core chamber's bracket is arranged on core chamber bottom to be multiple, and the plug system includes input end plug and port of export plug,
Input end plug and port of export plug are located at the both ends of core holding unit respectively, for blocking the core chamber of core holding unit, institute
Stating measuring system includes insulation sleeve, saturation degree probe and radial direction measuring point, and clamper drum surface diametrically offers aperture, institute
State after insulation sleeve is engaged with radial direction measuring point and be connected jointly with aperture, saturation degree probe is arranged in insulation sleeve, and saturation degree is visited
Pin is connected after passing through rubber sleeve with long cores, and ring pressure hole is additionally provided with clamper cylinder, and the confined pressure pump is passed through by pipeline
Communicated by ring pressure hole with confined pressure chamber.
2. multipair radial measurement long rock core holder according to claim 1, it is characterised in that：The input end plug
It is connected with the input end of displacement module, port of export plug is connected with metering module, ring die block, and ring pressure hole connects with confined pressure module
Connect.
3. multipair radial measurement long rock core holder according to claim 1, it is characterised in that：The footpath of the clamper
Logging is connected with to measuring point, the Resistivity testing instrument of all radial direction measuring point resistivity of connecting detection at logging.
4. multipair radial measurement long rock core holder according to claim 1, it is characterised in that：The radial direction measuring point shape
Point measurement in pairs, the spacing of two radial direction measuring points is 100mm.
5. multipair radial measurement long rock core holder according to claim 1, it is characterised in that：The long cores clamping
It is right that device co-exists in radial direction measuring point 12.
6. multipair radial measurement long rock core holder according to claim 1, it is characterised in that：The clamper cylinder
It is stainless steel with core chamber bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710968720.0A CN107991345A (en) | 2017-10-18 | 2017-10-18 | Multipair radial measurement long rock core holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710968720.0A CN107991345A (en) | 2017-10-18 | 2017-10-18 | Multipair radial measurement long rock core holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107991345A true CN107991345A (en) | 2018-05-04 |
Family
ID=62029788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710968720.0A Pending CN107991345A (en) | 2017-10-18 | 2017-10-18 | Multipair radial measurement long rock core holder |
Country Status (1)
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109270246A (en) * | 2018-10-19 | 2019-01-25 | 成都理工大学 | A kind of radial more monitoring core holding units for fracture hole oil reservoir |
| CN109356575A (en) * | 2018-10-19 | 2019-02-19 | 成都理工大学 | The multidirectional seepage flow coupling of rock core monitors bottom water coning device |
| CN109374859A (en) * | 2018-10-19 | 2019-02-22 | 成都理工大学 | A kind of adjustable crack core holding unit of slit width |
| CN109374858A (en) * | 2018-10-19 | 2019-02-22 | 成都理工大学 | A kind of heterogeneous fracture hole core holding unit of gravity multi-parameter monitoring |
| CN112129923A (en) * | 2020-09-24 | 2020-12-25 | 江苏华安科研仪器有限公司 | Multifunctional rock core holder |
| CN114720518A (en) * | 2021-01-06 | 2022-07-08 | 中国石油天然气股份有限公司 | Core holder, rock measurement system and resistance measurement method of core |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109270246A (en) * | 2018-10-19 | 2019-01-25 | 成都理工大学 | A kind of radial more monitoring core holding units for fracture hole oil reservoir |
| CN109356575A (en) * | 2018-10-19 | 2019-02-19 | 成都理工大学 | The multidirectional seepage flow coupling of rock core monitors bottom water coning device |
| CN109374859A (en) * | 2018-10-19 | 2019-02-22 | 成都理工大学 | A kind of adjustable crack core holding unit of slit width |
| CN109374858A (en) * | 2018-10-19 | 2019-02-22 | 成都理工大学 | A kind of heterogeneous fracture hole core holding unit of gravity multi-parameter monitoring |
| CN112129923A (en) * | 2020-09-24 | 2020-12-25 | 江苏华安科研仪器有限公司 | Multifunctional rock core holder |
| CN114720518A (en) * | 2021-01-06 | 2022-07-08 | 中国石油天然气股份有限公司 | Core holder, rock measurement system and resistance measurement method of core |
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Application publication date: 20180504 |