CN107255613A - A kind of dynamic capillary force experimental evaluation system of reservoir rockses - Google Patents
A kind of dynamic capillary force experimental evaluation system of reservoir rockses Download PDFInfo
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- CN107255613A CN107255613A CN201710549353.0A CN201710549353A CN107255613A CN 107255613 A CN107255613 A CN 107255613A CN 201710549353 A CN201710549353 A CN 201710549353A CN 107255613 A CN107255613 A CN 107255613A
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- 238000011156 evaluation Methods 0.000 title claims abstract description 18
- 239000011435 rock Substances 0.000 claims abstract description 44
- 238000012360 testing method Methods 0.000 claims abstract description 40
- 238000012856 packing Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000012530 fluid Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 3
- 210000005239 tubule Anatomy 0.000 claims description 2
- 238000009530 blood pressure measurement Methods 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 abstract description 10
- 238000011161 development Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 5
- 239000012071 phase Substances 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000008346 aqueous phase Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002591 computed tomography Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/088—Investigating volume, surface area, size or distribution of pores; Porosimetry
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Dispersion Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Fluid Mechanics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of dynamic capillary force experimental evaluation system of reservoir rockses, evaluation system includes core holding unit module, pressure test module and saturation degree test module.Core holding unit module：Including cylinder, coning sleeve, gum cover, plug, pressure cap, rock core plug, regulating nut and rock core connecting pole；Pressure test module：Including measuring point pressure cap, pressure tap pressure cap, pressure tap packing ring, semi-permeable plate, small pipeline and measuring point connector；Saturation degree test module：Including electrode, electrode upper gasket and electrode lower gasket.The invention can evaluate the dynamic capillary force of reservoir rockses under reservoir conditions, and low cost, testing cost is cheap, formulated for oil field and implementation development plan provides accurately and reliably foundation.
Description
Technical field
The invention belongs to oil-gas field development laboratory experiment technical field；In particular it relates to a kind of dynamic hollow billet of reservoir rockses
Power experimental evaluation system.
Background technology
Capillary force (capillary pressure) refers to the curved surface additonal pressure for rising or falling liquid level produced in capillary.
The direction of capillary force directional liquid concave surface institute direction, its size is directly proportional to the surface tension of the liquid, with capillary radius into anti-
Than.Capillary force often shows as the pressure of two-phase immiscible liquids (such as oil and water) curved interface both sides in formation rock capillary porosity
Power is poor, is data necessary to two phase fluid flow in study of rocks pore structure and rock, is also the important content of physics of oil layer
One of.
The method for determining rock capillary pressure curve is a lot, such as semi-permeable plate method, mercury injection method and centrifugal process.These are surveyed
Method for testing is typically to be carried out under static conditions or quasistatic condition (condition of dynamic balance), and the capillary force measured is referred to as static hair
Guan Li.But, it has been found that in actual flow through oil reservoir, capillary force is fluid saturation rate of change and dynamic hollow billet coefficient
Function, i.e., dynamic capillary force.The static capillary force that conventionally test is obtained is only relevant with fluid saturation, and in actual reservoir rockses
The corresponding dynamic capillary force of flow of fluid is different.The difference of static capillary force and dynamic capillary force is by many research institutes
Confirm, particularly in hypotonic or compact oil reservoir, this difference is bigger.Accordingly, it would be desirable to which one kind can evaluate reservoir rockses dynamic
The method and system of capillary force.
At present, the system for evaluating the dynamic capillary force of reservoir rockses is less, and most of evaluation object is sandpack column, and be
Carried out under Room-temperature low-pressure, it is impossible to the dynamic capillary force reflected in true reservoir rockses.Minority can be evaluated true under reservoir condition
The equipment of the dynamic capillary force of real reservoir cores, cost is higher, such as obtains oil-containing saturation by CT scan device scan core intersection
(Wang Shuoliang, Yingying Zhao is special in the spring assay method of heap of stone for waiting a kind of Reservoir behavior capillary pressure curves of and equipment [P] China for degree
Profit：CN105372150A, 2016-03-02), testing cost is also higher.
The content of the invention
It is an object of the invention to provide a kind of dynamic capillary force experimental evaluation system of reservoir rockses, existing experiment is overcome to survey
The deficiency of test system, can evaluate the dynamic capillary force of reservoir rockses under reservoir conditions.The system cost is low, and testing cost is low
It is honest and clean, formulated for oil field and implementation development plan provides accurately and reliably foundation.
The purpose of the present invention is achieved through the following technical solutions：A kind of dynamic capillary force experimental evaluation system of reservoir rockses
System, evaluation system includes core holding unit module, pressure test module and saturation degree test module, wherein：
Core holding unit module：Including cylinder, coning sleeve, gum cover, plug, pressure cap, rock core plug, regulating nut, and rock core
Connecting pole.There is symmetrical screw thread at core holding unit two ends, and each screw thread is isometric, can adjust clamped rock core on a large scale as needed
Length, and can ensure pressure testing point and saturation degree test point in the middle part of rock core by adjusting symmetrical regulating nut.Rock core
Clamper hits exactly symmetrical two pairs totally four pressure testing points, and each pair pressure testing point is distributed on same core section.Rock
Heart clamp holder is hit exactly, on the face vertical with rock core tangent plane where pressure testing point, is distributed a saturation degree test point, and with this just
Centered on middle saturation degree test point, two saturation degree test points are distributed at grade.
Pressure test module：Including measuring point pressure cap, pressure tap pressure cap, pressure tap packing ring, semi-permeable plate, small pipeline and survey
Point connector.
Saturation degree test module：Including electrode, electrode upper gasket and electrode lower gasket.
Here is that foregoing invention technical scheme is further illustrated：
Core holding unit module, the coning sleeve that its cylinder is used to hold outside confined pressure and displacement pressure, cylinder is connected with cylinder, with
Seal confined pressure and displacement pressure；Pressure test hole and electrode inlet are provided with cylinder.Gum cover wraps up core sample in cylinder, can be right
Core sample is pressurizeed, and simulates oil reservoir burden pressure；Also pressure test hole and electrode inlet are provided with gum cover.Rock core plug is acted on
In core sample both ends of the surface, there is hole at its center, so that displacing fluid is flowed into, and it is conductive as metal electrode.Rock core plug and rock core connect
Connect post to be connected, rock core connecting pole is nonconducting nonmetallic materials, separates rock core plug and regulating nut.Regulating nut passes through rock core
Connecting pole acts on rock core plug, position of the rock core plug in core holding unit can be controlled by regulating nut, with fixed different
The rock core of length.Pressure test module, small pipeline is arrived by the pressure test hole of gum cover, pressure tap packing ring and pressure tap pressure cap
Up to semi-permeable plate.Under confined pressure effect, small pipeline is sealed with gum cover；Pressure tap pressure cap extruding pressure tap packing ring is realized and tubule
Sealing between line.Semi-permeable plate is placed in measuring point connector, and fluid is reached after semi-permeable plate from small pipeline, is realized
Water is excessively oily, then reaches pressure sensor test oil, the pressure value of water by small pipeline.Measuring point connector can be dismantled, so as to
Install and change semi-permeable plate.Protect joint can protection measurements pressure cap and measuring point connector, prevent because measuring point connector is frequent
The screw thread dismantled and damaged on cylinder.
Saturation degree test module, electrode reaches core surface through electrode upper gasket and electrode lower gasket.Electrode upper gasket
It is non-metallic material, spaced-apart electrodes and core holding unit cylinder with electrode lower gasket.
The present invention has advantages below：
Compact conformation is rationally, easy to use, is tested by real-time pressure test and saturation degree, can be in reservoir condition
Under, test reservoir rockses saturation degree and dynamic capillary pressure on the spot；The dynamic capillary force of different length rock core can be tested, and is protected
Test point is demonstrate,proved in the centre position of rock core；Semi-permeable plate has been used in manometric module, oil phase and aqueous phase pressure, tool are tested respectively
There is very strong reference value.
Brief description of the drawings
Fig. 1 is a kind of front view of reservoir rockses dynamic capillary force experimental evaluation system of the invention；
Fig. 2 is a kind of vertical view cross section structure diagram of reservoir rockses dynamic capillary force experimental evaluation system of the invention；
Fig. 3 is Fig. 1 (A-A) left view cross section structure diagram；
In figure, 1- cylinders, 2- coning sleeves, 3- gum covers, 4- plugs, 5- pressure caps, 6- rock core plugs, 7- regulating nuts, 8- rock cores
Connecting pole, 9- electrode lower gaskets, 10- electrode upper gaskets, 11- electrodes, 12- measuring point pressure caps, 13- pressure tap pressure caps, 14- pressure taps
Packing ring, 15- protection joints, 16- measuring point connectors, 17- semi-permeable plates, the small pipelines of 18-.
Embodiment
The present invention is not limited by subordinate's embodiment, can technique according to the invention scheme and actual conditions it is specific to determine
Embodiment.In the present invention, for the ease of description, the description of the relative position relation of each part is attached according to specification
Fig. 1 Butut mode is described, such as：The position relationship of forward and backward, upper and lower, left and right etc. is according to Figure of description 1
Butut direction is determined.
With reference to embodiment and accompanying drawing, the present invention will be further described, protection scope of the present invention be not limited to
It is lower described：
The present embodiment is the explanation to a kind of dynamic capillary force experimental evaluation system of reservoir rockses, and Fig. 1 illustrates the system
The front view of system, step is as follows：
(1) preparation of water and crude oil：Factually the primary salinity water in border and ion component prepare stratum water；Original is fetched from scene
Oil, removes solid impurity therein；
(2) make and screen rock core：Transported back from scene after rock sample, drill through rock core some；The hole of each rock core of test analysis
Degree, permeability, oil-containing water saturation, and averaged.Select porosity, permeability, that saturation degree can represent whole rock sample is equal
The rock core of value level sets up its initial oil water saturation as experimental subjects；
(3) regulating nut 7, rock core connecting pole 8 and rock core plug 6 are taken out, rock core is put into clamper, rock core is sequentially placed into
Plug 6, rock core connecting pole 8 and regulating nut 7, rotate the regulating nut 7 at two ends, rock core is located in the middle of clamper；
(4) mounting and adjusting electrode upper gasket 10, electrode lower gasket 9 and electrode 11, make electrode be close to core surface；
(5) pressure tap packing ring 14, pressure tap pressure cap 12 and small pipeline 18 are installed, then semi-permeable plate 17 is installed, installs and protects
Joint 15 is protected, measuring point connector 16 is screwed in, to fix semi-permeable plate 17；
(6) to rock core heating plus confined pressure, whole system is debugged, each tester is corrected；
(7) rock core displacement test：Injection pressure is gradually risen, the stratum water of configuration is injected；In each displacement pressure condition
Under, record resistivity data and oil phase, aqueous phase pressure until resistivity and pressure reach stable state, then raises injection pressure；
When without crude oil output, stop displacement and calculate corresponding oil recovery factor, collect crude oil, the water displaced；Water drive is carried out again
Experiment, repeats measurement noted earlier, record and collects process.
Claims (4)
1. the dynamic capillary force experimental evaluation system of a kind of reservoir rockses, it is characterised in that evaluation system includes core holding unit mould
Block, pressure test module and saturation degree test module；The evaluation system can be placed in baking oven, and load confined pressure, simulate oil reservoir
High-temperature and high-pressure conditions.
2. the dynamic capillary force experimental evaluation system of a kind of reservoir rockses as claimed in claim 1, it is characterised in that rock core is clamped
There is symmetrical screw thread at device two ends, the length of clamped rock core can be adjusted on a large scale as needed, while can ensure pressure testing point
With saturation degree test point in the middle part of rock core.
3. a kind of dynamic capillary force experimental evaluation system of reservoir rockses as claimed in claim 1, it is characterised in that pressure test
Module includes measuring point pressure cap 12, pressure tap pressure cap 13, pressure tap packing ring 14, semi-permeable plate 17, small pipeline 18 and measuring point connection
First 16；
The small pipeline 18 is used to transmit fluid pressure, and liquid passes through the pressure test hole of gum cover 3, pressure tap packing ring 14 and pressure measurement
Point pressure cap 13, then pass through semi-permeable plate 17；
The semi-permeable plate 17, for realizing that water is crossed in water proof oil or oil removal excessively, is placed in measuring point connector, fluid is from tubule
Line 18 reaches semi-permeable plate 17, then reaches pressure sensor test oil, the pressure value of water by small pipeline 18；
The measuring point connector 16, for installing and changing semi-permeable plate 17, can be dismantled；
The protection joint 15, for protection measurements pressure cap 12 and measuring point connector 16, is prevented because measuring point connector 16 is often torn open
Unload and damage screw thread on cylinder.
4. a kind of dynamic capillary force experimental evaluation system of reservoir rockses as claimed in claim 1, it is characterised in that the clamping
Rock core is cylinder, and adjustment length can be changed according to core holding unit and reach.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710549353.0A CN107255613A (en) | 2017-07-07 | 2017-07-07 | A kind of dynamic capillary force experimental evaluation system of reservoir rockses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710549353.0A CN107255613A (en) | 2017-07-07 | 2017-07-07 | A kind of dynamic capillary force experimental evaluation system of reservoir rockses |
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| CN107255613A true CN107255613A (en) | 2017-10-17 |
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| CN201710549353.0A Pending CN107255613A (en) | 2017-07-07 | 2017-07-07 | A kind of dynamic capillary force experimental evaluation system of reservoir rockses |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991345A (en) * | 2017-10-18 | 2018-05-04 | 成都理工大学 | Multipair radial measurement long rock core holder |
| CN108680482A (en) * | 2018-05-18 | 2018-10-19 | 西南石油大学 | Dynamic hollow billet effect experiment evaluation method during a kind of reservoir water |
| CN108717036A (en) * | 2018-05-18 | 2018-10-30 | 西南石油大学 | The experimental evaluation method of dynamic phase percolation curve during a kind of reservoir water |
| CN110823779A (en) * | 2019-11-19 | 2020-02-21 | 西南石油大学 | Rock core holder and combination formula rock core centre gripping model |
| CN112129923A (en) * | 2020-09-24 | 2020-12-25 | 江苏华安科研仪器有限公司 | Multifunctional rock core holder |
| CN113029898A (en) * | 2021-02-22 | 2021-06-25 | 西南石油大学 | Device and method for testing dynamic flow conductivity of crack and gas supply capacity of bedrock |
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| US20060070425A1 (en) * | 2004-10-01 | 2006-04-06 | Lasswell Patrick M | Electronic humidity chamber for vapor desorption to determine high capillary pressures |
| CN101967970A (en) * | 2010-10-22 | 2011-02-09 | 中国石油大学(北京) | Method for measuring dynamic capillary pressure of core under conditions of reservoir temperature and pressure |
| CN102621034A (en) * | 2012-03-29 | 2012-08-01 | 中国石油大学(华东) | Reservoir capillary pressure curve determinator under high temperature and pressure |
| CN202583323U (en) * | 2012-05-25 | 2012-12-05 | 中国石油大学(华东) | Clamp holder for semi-permeable partition board method to jointly detect capillary pressure resistivity |
| CN204903529U (en) * | 2015-07-02 | 2015-12-23 | 中石化石油工程技术服务有限公司 | Major diameter rock core hollow billet pressure curve and constraint water saturation measuring device |
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2017
- 2017-07-07 CN CN201710549353.0A patent/CN107255613A/en active Pending
Patent Citations (5)
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| US20060070425A1 (en) * | 2004-10-01 | 2006-04-06 | Lasswell Patrick M | Electronic humidity chamber for vapor desorption to determine high capillary pressures |
| CN101967970A (en) * | 2010-10-22 | 2011-02-09 | 中国石油大学(北京) | Method for measuring dynamic capillary pressure of core under conditions of reservoir temperature and pressure |
| CN102621034A (en) * | 2012-03-29 | 2012-08-01 | 中国石油大学(华东) | Reservoir capillary pressure curve determinator under high temperature and pressure |
| CN202583323U (en) * | 2012-05-25 | 2012-12-05 | 中国石油大学(华东) | Clamp holder for semi-permeable partition board method to jointly detect capillary pressure resistivity |
| CN204903529U (en) * | 2015-07-02 | 2015-12-23 | 中石化石油工程技术服务有限公司 | Major diameter rock core hollow billet pressure curve and constraint water saturation measuring device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991345A (en) * | 2017-10-18 | 2018-05-04 | 成都理工大学 | Multipair radial measurement long rock core holder |
| CN108680482A (en) * | 2018-05-18 | 2018-10-19 | 西南石油大学 | Dynamic hollow billet effect experiment evaluation method during a kind of reservoir water |
| CN108717036A (en) * | 2018-05-18 | 2018-10-30 | 西南石油大学 | The experimental evaluation method of dynamic phase percolation curve during a kind of reservoir water |
| CN110823779A (en) * | 2019-11-19 | 2020-02-21 | 西南石油大学 | Rock core holder and combination formula rock core centre gripping model |
| CN112129923A (en) * | 2020-09-24 | 2020-12-25 | 江苏华安科研仪器有限公司 | Multifunctional rock core holder |
| CN113029898A (en) * | 2021-02-22 | 2021-06-25 | 西南石油大学 | Device and method for testing dynamic flow conductivity of crack and gas supply capacity of bedrock |
| CN113029898B (en) * | 2021-02-22 | 2022-04-15 | 西南石油大学 | Device and method for testing dynamic flow conductivity of crack and gas supply capacity of bedrock |
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