CN203965290U - A kind of test unit of measuring multiple dimensioned rock permeability - Google Patents
A kind of test unit of measuring multiple dimensioned rock permeability Download PDFInfo
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- CN203965290U CN203965290U CN201420033736.4U CN201420033736U CN203965290U CN 203965290 U CN203965290 U CN 203965290U CN 201420033736 U CN201420033736 U CN 201420033736U CN 203965290 U CN203965290 U CN 203965290U
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Abstract
The utility model discloses a kind of test unit of measuring multiple dimensioned rock permeability, device comprises oil hydraulic system, pressure chamber, pressure chamber's sealing system, support, measuring system sealed rubber pipe and level measuring pipe, wherein, oil hydraulic system is connected with pressure chamber by hose, and connector place is provided with water inlet coupling bolt, bottom, pressure chamber is provided with water delivering orifice, water delivering orifice connects one end of measuring system sealed rubber pipe by hose, the other end of measuring system sealed rubber pipe connects level measuring pipe, level measuring pipe is fixed on support, pressure chamber's sealing system is filled in the space between pressure chamber and rock sample.This device of the utility model can carry out the permeability test under multiple seepage pressure condition, can pressurize step by step, and seepage pressure can accurately be controlled; This device can meet the permeability test of five kinds of sizes, non-standard sample.
Description
Technical field
The utility model relates to a kind of test unit of measuring multiple dimensioned rock permeability.
Background technology
In petroleum exploration and development process, the perviousness of reservoir is an important parameter that carries out evaluating reservoir.Reservoir permeability evaluation align confirm to know reservoir characteristics, determine Oil & Gas Productivity and develop conceptual design and adjustment work significant.Permeability is a very important concept in hydrogeology, and the definite correctness of crack rock permeability is directly connected to the reliability of Flow In Jointed Rock Masses analysis result.
From current research, rock mass hydraulics permeability define three kinds of methods, the one, field dimensional measurement method; The 2nd, (pressure) water test method is put forward in field; The 3rd, mathematical model inverting method for solving.Field geometric measurement method is based on statistical method, by the geometrical measurements of rock cranny, calculates the permeability of rock mass by system juice method.When the most basic seepage flow characteristics of research fissuted medium, only need set up the dielectric model in simple crack, just can illustrate the fissurity of rock and the relation between perviousness.Therefore the method is simple and practical, but result of calculation is relatively coarse.Field water lift test method is based on analytic solution method, uses field single hole setting-out or water lift testing data, determines rock mass permeability.Single hole packer permeability test simple, intuitive, is widely used, and it is considered as isotropy by fissuted medium.The method can be measured the permeability of crack rock more accurately, but consuming time, cost amount is larger.Mathematical model inverting solving method is to use groundwater dynamic information, by the mathematical model of setting up, comes inverting to solve.Determine rock mass hydraulic parameter.The parameter of trying to achieve by the method is commonly referred to as " model parameter ", and what its reflected is under given initial value and boundary condition, by the matching of existing actual measurement groundwater dynamic information, and the parameter obtaining.But this parameter can not be equivalent to the parameter of actual rock mass, can only give and certain prediction effect.
The method that the most effectively obtains rock permeability is experimental method, but according to existing experimental apparatus, can only monitor the permeability of certain size rock.Yet the increase along with rock size, the crack that rock interior comprises, hole all can change thereupon, the rock permeability of single size can not represent the permeability of this area's rock, can not provide the law of regularity between rock size and rock permeability, so it is very necessary to develop a kind of test unit of measuring multiple dimensioned rock permeability.
Utility model content
The utility model, in order to address the above problem, has proposed a kind of test unit of measuring multiple dimensioned rock permeability, and this device can carry out rock permeability test under hyperosmosis power, and pressurization step by step, and seepage pressure can accurately be controlled.
To achieve these goals, the utility model adopts following technical scheme:
A kind of test unit of measuring multiple dimensioned rock permeability, comprise oil hydraulic system, pressure chamber, pressure chamber's sealing system, support, measuring system sealed rubber pipe and level measuring pipe, wherein, oil hydraulic system is connected with pressure chamber by hose, and connector place is provided with water inlet coupling bolt, bottom, pressure chamber is provided with water delivering orifice, water delivering orifice connects one end of measuring system sealed rubber pipe by hose, the other end of measuring system sealed rubber pipe connects level measuring pipe, level measuring pipe is fixed on support, pressure chamber's sealing system is filled in the space between pressure chamber and rock sample.
The top of described pressure chamber is provided with into water end cap, and water inlet end cap inner side is provided with core O-ring seal.
The main body upper end of described pressure chamber is provided with o-ring groove, and middle-end inside is provided with records silica gel retainer plate and rubber tapping model circle.
Described pressure chamber sealing system is to be combined by the proportioning of 1000:25:1 by silica gel, hardening agent and cementing agent.
The bottom of described pressure chamber is provided with water outlet end cap, and is provided with radioactivity water outlet groove inside water outlet end cap, and described radioactivity water outlet groove is plectane, on plectane, is radially evenly provided with several grooves with hoop.
Described pressure chamber is made by stainless steel material.
Described water inlet coupling bolt is connected by matching thread with water inlet end cap.
Described water delivering orifice coupling bolt is connected by matching thread with water outlet end cap.
Described level measuring pipe range is 10ml.
The beneficial effects of the utility model are:
1. this device can carry out rock permeability test under hyperosmosis power, and maximum seepage pressure 3.5MPa;
2. this device can carry out the permeability test under multiple seepage pressure condition, can pressurize step by step, and seepage pressure can accurately be controlled;
3. this device can meet the permeability test of five kinds of sizes, non-standard sample;
4. use silica gel material and be aided with O-ring seal, o-ring groove, record silica gel retainer plate and rubber tapping model circle has met sample sealing requirements around, respond well.
5. the utility model energy Accurate Measurement infiltration volume carry out flow measurement.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Tu2Shi the utility model pressure chamber forms structure side view.
Wherein 1. oil hydraulic systems, 2. pressure chamber, 2-1. water inlet end cap, 2-2. core O-ring seal, 2-3. water outlet end cap, 2-4. radioactivity water outlet groove, 2-5. pressure chamber main body, 2-6. o-ring groove, 2-7. record silica gel retainer plate, 2-8. rubber tapping model circle, 3. water inlet coupling bolt, 4. water delivering orifice coupling bolt, 5. support, 6. measuring system sealed rubber pipe, 7. level measuring pipe.
Embodiment:
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
As shown in Figure 1, measure a test unit for multiple dimensioned rock permeability, by placing oil hydraulic system 1, pressure chamber 2, water inlet end cap 2-1, core O-ring seal 2-2, water outlet end cap 2-3, radioactivity water outlet groove 2-4, the main body 2-5 of pressure chamber, o-ring groove 2-6, record silica gel retainer plate 2-7, rubber tapping model circle 2-8, water inlet coupling bolt 3, water delivering orifice coupling bolt 4, support 5, measuring system sealed rubber pipe 6 and level measuring pipe 7 and form.
Oil hydraulic system 1 is connected with pressure chamber 2 by hose, water inlet coupling bolt 3, pressure chamber 2 is connected with measuring system sealed rubber pipe 6 by water delivering orifice coupling bolt 4, hose, measuring system sealed rubber pipe 6 is connected with level measuring pipe 7, and level measuring pipe is fixing by support 5.
As shown in Figure 2, pressure chamber 2 comprises into water end cap 2-1, water inlet end cap 2-1 inner side is provided with core O-ring seal 2-2, under water inlet end cap 2-1, be the main body 2-5 of pressure chamber, its upper end is provided with o-ring groove 2-6, record silica gel retainer plate 2-7 and rubber tapping model circle 2-8 is arranged on between the main body 2-5 of water end cap 2-1He pressure chamber, main body 2-5 bottom, pressure chamber is provided with water outlet end cap 2-3, and its inner side is provided with radioactivity water outlet groove 2-4.
Oil hydraulic system 1 can provide continuous indefinite constant voltage, reaches as high as 3.5Mpa.
Water inlet coupling bolt 3 is connected by matching thread with water inlet end cap 2-1.
Pressure chamber 2 is made by stainless steel material.
Pressure chamber 2 is provided with 9cm * 10cm, 12cm * 10cm, 20cm * 20cm, 25cm * 20cm and five kinds of different sizes of 32cm * 20cm.
Core O-ring seal 2-2, o-ring groove 2-6, record silica gel retainer plate 2-7 and rubber tapping model circle 2-8 coordinates silica gel sealing material to realize pressure chamber's 2 sealings.
Water delivering orifice coupling bolt 4 is connected by matching thread with water outlet end cap 2-3.
Radioactivity water outlet groove 2-4 is by radially realizing with hoop laying groove.
Level measuring pipe 7 ranges are 10ml.
Measure the test unit using method of multiple dimensioned rock permeability: adopt the method for immersion saturated, the rock sample preparing is soaked more than 3 days and makes test reach basic state of saturation in water; By saturated sample at room temperature air-dried sample surface (it is insecure that surface wettability and silica gel bond, and can cause sample surface leakage water in process of the test); Air-dry rock sample is positioned in the main body 2-5 of pressure chamber, uses supporting core retainer plate that sample is fixed on to main body 2-5 middle, pressure chamber, around space is even to make it; Preparation silica gel, gets the good silica gel of milky cohesiveness and hardness appropriate, in predetermined ratio, adds cementing agent and hardening agent, and rapid stirring is even; Sample end face puts records silica gel retainer plate 2-7, along the sample upper surface beginning encapsulating that keeps to the side, colloid flows under the influence of gravity into sample and the main body 2-5 of pressure chamber gap around, and the speed that pours into must be evenly, otherwise silica gel there will be bubble, cause sample poorly sealed around; In encapsulating process, with rubber hammer, touch the main body 2-5 of pressure chamber sidewall, make silica gel evenly be filled into densely the gap between sample and the main body 2-5 of pressure chamber; By having filled with sample, place 24 hours, make silica gel be agglomerated to the required hardness of test and just can carry out next test procedure; The supporting rubber tapping model circle 2-8 in Jiang Yu pressure chamber 2 is placed on silica gel top, and the silica gel on rock sample top is cut off, and then at Silica Surface coating butter and hydraulic oil (playing sealing and lubrication), then tightens water inlet end cap 2-1; After oil hydraulic system 1 is ready, oil hydraulic system 1 is coupled together with pressure chamber 2, and UNICOM's power supply, opens switch, classification pressurization, observation data, as requested, test adopts the mode that becomes seepage pressure to test the infiltration coefficient of rock sample under different pressures, first measure the data on flows of 500kPa, slowly be pressurized to 1MPa then to sample, after stability of flow, three groups of datas on flows of parallel testing; Slowly apply again and minute be clipped to 2MPa and 3MPa, respectively after stability of flow, observed stage measuring tube 7 numerical value record; After off-test, remove pressure chamber 2, sample is taken out to cleaning pressure chamber 2.
Although above-mentioned, by reference to the accompanying drawings embodiment of the present utility model is described; but the not restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection domain of the present utility model.
Claims (4)
1. a test unit of measuring multiple dimensioned rock permeability, it is characterized in that: comprise oil hydraulic system, pressure chamber, pressure chamber's sealing system, support, measuring system sealed rubber pipe and level measuring pipe, wherein, oil hydraulic system is connected with pressure chamber by hose, and connector place is provided with water inlet coupling bolt, bottom, pressure chamber is provided with water delivering orifice, water delivering orifice connects one end of measuring system sealed rubber pipe by hose, the other end of measuring system sealed rubber pipe connects level measuring pipe, level measuring pipe is fixed on support, pressure chamber's sealing system is filled in the space between pressure chamber and rock sample,
The top of described pressure chamber is provided with into water end cap, and water inlet end cap inner side is provided with core O-ring seal; The main body upper end of described pressure chamber is provided with o-ring groove, and middle-end inside is provided with records silica gel retainer plate and rubber tapping model circle; The bottom of described pressure chamber is provided with water outlet end cap, and is provided with radioactivity water outlet groove inside water outlet end cap, and described radioactivity water outlet groove is plectane, on plectane, is radially evenly provided with several grooves with hoop.
2. a kind of test unit of measuring multiple dimensioned rock permeability as claimed in claim 1, is characterized in that: described pressure chamber is made by stainless steel material.
3. a kind of test unit of measuring multiple dimensioned rock permeability as claimed in claim 1, is characterized in that: described water inlet coupling bolt is connected by matching thread with water inlet end cap; Described water delivering orifice coupling bolt is connected by matching thread with water outlet end cap.
4. a kind of test unit of measuring multiple dimensioned rock permeability as claimed in claim 1, is characterized in that: described level measuring pipe range is 10ml.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420033736.4U CN203965290U (en) | 2014-01-20 | 2014-01-20 | A kind of test unit of measuring multiple dimensioned rock permeability |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420033736.4U CN203965290U (en) | 2014-01-20 | 2014-01-20 | A kind of test unit of measuring multiple dimensioned rock permeability |
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| CN203965290U true CN203965290U (en) | 2014-11-26 |
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| CN201420033736.4U Withdrawn - After Issue CN203965290U (en) | 2014-01-20 | 2014-01-20 | A kind of test unit of measuring multiple dimensioned rock permeability |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760085A (en) * | 2014-01-20 | 2014-04-30 | 山东大学 | Test device for measuring multiscale rock permeability and test method |
| CN104677799A (en) * | 2015-01-05 | 2015-06-03 | 王军 | Electric-clogging testing device for geotextile |
-
2014
- 2014-01-20 CN CN201420033736.4U patent/CN203965290U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760085A (en) * | 2014-01-20 | 2014-04-30 | 山东大学 | Test device for measuring multiscale rock permeability and test method |
| CN104677799A (en) * | 2015-01-05 | 2015-06-03 | 王军 | Electric-clogging testing device for geotextile |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141126 Effective date of abandoning: 20160420 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |