CN105372405B - Reservoir gas supply capacity detecting system and application method - Google Patents
Reservoir gas supply capacity detecting system and application method Download PDFInfo
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- CN105372405B CN105372405B CN201410418599.0A CN201410418599A CN105372405B CN 105372405 B CN105372405 B CN 105372405B CN 201410418599 A CN201410418599 A CN 201410418599A CN 105372405 B CN105372405 B CN 105372405B
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Abstract
The application provides a kind of reservoir gas supply capacity detecting system and application method.Reservoir gas supply capacity detecting system includes：First core holding unit, its side wall is provided with the first through hole, the first core holding unit have back to the first inlet end and the first outlet side, the first core holding unit, which can be housed, makes seam rock core, and the first through hole is located at side wall and stitched with making in the region that rock core is in contact；With can house the second core holding unit of the first matrix rock core, the second core holding unit have the second inlet end and can break-make the second outlet side being connected with the first through hole；At least one high-pressure air source can respectively with the first inlet end and the second inlet end can break-make connection；With the first outlet side can break-make connection measurement apparatus, measurement apparatus can measure from the first outlet side flow out gas relevant parameter.The gas production process of reservoir after reservoir gas supply capacity detecting system energy simulated pressure, and detect the related data of record gas production process.
Description
Technical field
The application is related to the technical field of exploration of oil and gas field and exploitation, more particularly to a kind of reservoir gas supply capacity detecting system
And application method.
Background technology
In the prior art, in gas well recovery process, through frequently with the mode that pressure break is carried out to reservoir, exploiting in reservoir
Natural gas.Generally, pressure break is that the liquid of high pressure is injected into reservoir, reservoir is produced crack, the reservoir depths for linking up crack
Natural gas, and then natural gas is quickly exploited.
Even if however, not carrying out pressure break to reservoir, can also be permeated by the space of reservoir itself, the day in collection reservoir
Right gas.Although can lift exploitation rate after pressure break, whether whether pressure break lifts the overall gas supply capacity of reservoir in itself, i.e., carry
The overall natural gas extraction ratio of reservoir has been risen, effective means are lacked at present and are detected.
The content of the invention
The application provides a kind of effective reservoir gas supply capacity detecting system and application method.
A kind of reservoir gas supply capacity detecting system, including：The first rock core with the first confined pressure chamber surrounded by side wall
Clamper, the side wall is provided with the first through hole, first core holding unit have back to the first inlet end and the
One outlet side, first core holding unit, which can be housed, to be made seam rock core and applies confined pressure to the seam rock core of making, described to make seam rock
The heart has the crack extended from first outlet side towards the direction of first inlet end, and first through hole is located at institute
Side wall is stated to make in the region that seam rock core is in contact with described；The second rock with the second confined pressure chamber that can house the first matrix rock core
Heart clamp holder, second core holding unit have the second inlet end and can break-make be connected with first through hole second
Outlet side；At least one high-pressure air source, at least one described high-pressure air source can respectively with first inlet end and described second
Inlet end can break-make connection, gases at high pressure can be injected to the first confined pressure chamber and the second confined pressure chamber；With described first
Outlet side can break-make connection measurement apparatus, the measurement apparatus can measure from first outlet side flow out gas phase
Related parameter.
A kind of application method of reservoir gas supply capacity detecting system, the application method includes：Seam rock core peace is made by described
The first confined pressure intracavitary of first core holding unit is filled to, the first matrix rock core is attached to second rock core
Second confined pressure intracavitary of clamper, it is described to make seam rock core and the first matrix rock core collection from same reservoir；Make described
One core holding unit increases confined pressure to predetermined confined pressure, second core holding unit is increased confined pressure to the predetermined confined pressure；Make
High pressure gas is injected with least one described high-pressure air source to first core holding unit and second core holding unit respectively
Body to the first confined pressure chamber and the second confined pressure chamber reaches preset air pressure；Connect the first confined pressure chamber and described second
Confined pressure chamber；First outlet side and the measurement apparatus are connected, is measured and is recorded from described first by the measurement apparatus
The relevant parameter of the gas of outlet side outflow；The gas supply capacity of the reservoir is evaluated according to the relevant parameter.
A kind of application method of reservoir gas supply capacity detecting system, the application method includes：By it is described make seam rock core and
The second matrix rock core is attached to the first confined pressure intracavitary of first core holding unit, the second matrix rock core position
In the seam rock core of making close to the side of first inlet end, the first matrix rock core is attached to second rock core and pressed from both sides
The second confined pressure intracavitary of holder, the 3rd matrix rock core is attached to the measurements of the chest, waist and hips of the 3rd core holding unit
Intracavitary is pressed, it is described to make seam rock core, the first matrix rock core, the second matrix rock core and the 3rd matrix rock core collection certainly
Same reservoir；First core holding unit, second core holding unit and the 3rd core holding unit is set to increase respectively
Plus confined pressure is to predetermined confined pressure；By first core holding unit, second core holding unit and the 3rd core holding unit
The connection with least one pressue device is disconnected, is pressed from both sides respectively to first rock core using at least one described high-pressure air source
Holder, second core holding unit and the 3rd core holding unit inject gases at high pressure to the first confined pressure chamber, second
Confined pressure chamber and the 3rd confined pressure chamber reach preset air pressure；By the second confined pressure chamber and the 3rd confined pressure chamber respectively with institute
State the connection of the first confined pressure chamber；First outlet side and the measurement apparatus are connected, measures and records by the measurement apparatus
The relevant parameter of the gas flowed out from first outlet side；The gas supply capacity of the reservoir is evaluated according to the relevant parameter.
A kind of application method of reservoir gas supply capacity detecting system, the application method includes：Seam rock core, institute are made by described
State the second matrix rock core and the 4th matrix rock core is attached to the first confined pressure intracavitary of first core holding unit, institute
State the second matrix rock core and be located at the seam rock core of making close to the side of first inlet end, the 4th matrix rock core is located at institute
The second matrix rock core is stated close to the side of first inlet end；The first matrix rock core is attached to the second rock core folder
The second confined pressure intracavitary of holder, the 3rd matrix rock core is attached to the measurements of the chest, waist and hips of the 3rd core holding unit
Intracavitary is pressed, the 5th matrix rock core is attached to the 4th confined pressure intracavitary of the 4th core holding unit；It is described to make seam
Rock core, the first matrix rock core, the second matrix rock core, the 3rd matrix rock core, the 4th matrix rock core and institute
The collection of the 5th matrix rock core is stated from same reservoir；Make first core holding unit, second core holding unit, described
Three core holding units and the 4th core holding unit increase confined pressure to predetermined confined pressure respectively；Use at least one described high pressure gas
Gases at high pressure are injected in source to first core holding unit, second core holding unit and the 3rd core holding unit respectively
Preset air pressure is reached to the first confined pressure chamber, the second confined pressure chamber, the 3rd confined pressure chamber and the 4th confined pressure chamber；By institute
The second confined pressure chamber, the 3rd confined pressure chamber and the 4th confined pressure chamber is stated to connect with the first confined pressure chamber respectively；Connection is described
First outlet side and the measurement apparatus, measure and record the gas flowed out from first outlet side by the measurement apparatus
Relevant parameter.
The reservoir gas supply capacity detecting system that the application embodiment is provided, by making seam rock core simulation by the storage of pressure break
Layer, the initial reservoir adjacent with the rock core by pressure break is simulated by matrix rock core, and confined pressure is applied to rock core by core holding unit
Pressure state in simulated formation, by injecting the natural gas in gases at high pressure simulation reservoir, and then is put by the first outlet side
Go out gas simulation gas well exploitation, the relevant parameter of gas is measured by measurement apparatus.It can be seen that, the reservoir gas supply capacity inspection of the application
Examining system is realized the relevant parameter of the post-fracturing reservoir gas supply capacity of detection by simulating by the gas production process of the reservoir of pressure break.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, is carried out more below in conjunction with accompanying drawing to the present invention
Detailed description.
The schematic diagram for the reservoir gas supply capacity detecting system that Fig. 1 provides for the application embodiment；
The flow chart of the application method for the reservoir gas supply capacity detecting system that Fig. 2 provides for the application embodiment；
The flow chart of the application method for the reservoir gas supply capacity detecting system that Fig. 3 provides for the application embodiment；
The flow chart of the application method for the reservoir gas supply capacity detecting system that Fig. 4 provides for the application embodiment.
Embodiment
Referring to Fig. 1, a kind of reservoir gas supply capacity detecting system 10, including：With the first confined pressure surrounded by side wall
First core holding unit 13 of chamber 11, side wall is provided with the first through hole 15, the first core holding unit 13 have back to the
One inlet end 17 and the first outlet side 19, the first core holding unit 13, which can be housed, to be made seam rock core 21 and is enclosed to the seam application of rock core 21 is made
Pressure, making seam rock core 21 has the crack extended from the first outlet side 19 towards the direction of the first inlet end 17, the first through hole 15
Positioned at side wall with making in the region that seam rock core 21 is in contact；With the second confined pressure chamber 25 that can house the first matrix rock core 23
Two core holding units 27, the second core holding unit 27 have the second inlet end 29 and can break-make be connected with the first through hole 15
Second outlet side 31；At least one high-pressure air source 33, at least one high-pressure air source 33 can respectively with the first inlet end 17 and second
Inlet end 29 can break-make connection, gases at high pressure can be injected to the first confined pressure chamber 11 and the second confined pressure chamber 25；With the first outlet side
19 can break-make connection measurement apparatus 35, measurement apparatus 35 can measure the related ginseng of the gas flowed out from the first outlet side 19
Number.
Confined pressure sap cavity is provided with the side wall of first core holding unit 13, can be by injecting confined pressure liquid into confined pressure sap cavity
To increase the confined pressure that 13 pairs of the first core holding unit makes seam rock core 21.Further, to making the confined pressure size that seam rock core 21 applies
The pressure size being subject to when making seam rock core 21 in stratum can be simulated.
First through hole 15 runs through the side wall of the first core holding unit 13, between the confined pressure sap cavity and the first through hole 15
It can be separated by the encapsulant being connected with side wall so that will not connect between the first through hole 15 and confined pressure sap cavity
It is logical.Second outlet side 31 of the second core holding unit 27 can be connected with the first through hole 15, realized and passed through the first matrix rock core
Relative to by the reservoir of pressure break reservoir horizontal direction in 23 simulated formations, so as to study pressure break to relative to by pressure break reservoir
Horizontal reservoir gas supply capacity influence.
The seam matrix rock core 23 of rock core 21 and first is made to gather from same reservoir.It can be by intact base to make seam rock core 21
Matter rock core formed after man seam processing.Specifically, making the diameter of the seam matrix rock core 23 of rock core 21 and first can be
10cm, length can be 20cm.
Second core holding unit 27 also has confined pressure sap cavity, by injecting confined pressure liquid into the confined pressure sap cavity with to the first base
Matter rock core applies confined pressure.Further, the confined pressure size that can apply to the first matrix rock core 23 can simulate the first matrix rock
The heart 23 is in the pressure size being subject to during stratum.
The first valve 37 can be provided between the second outlet side 31 and first through hole 15.Pass through first valve
Door 37 just can control the break-make between the second outlet side 31 and the first through hole 15.
Gas at least one high-pressure air source 33 can be dry air or nitrogen.The number of at least one high-pressure air source 33
Amount can be one, now can be by triple valve by the high-pressure air source and the first core holding unit 13 and the second core holding unit
27 connections.Certainly, the quantity of at least one high-pressure air source 33 can also be two, i.e. the first core holding unit 13 and the second rock core
Clamper 27 connects a high-pressure air source 33 respectively.
The second valve 39 is provided between at least one inlet end 17 of high-pressure air source 33 and first, passes through the second valve 39
Open or close realize at least one inlet end 17 of high-pressure air source 33 and first can break-make connection.In at least one high-pressure air source
33 and second are provided with the 3rd valve 41 between inlet end 29, realize that at least one is high by opening or closing for the 3rd valve 41
The inlet end 29 of pressurized air source 33 and second can break-make connection.
Measurement apparatus 35 can be gas mass flow controller, and it can control the size of throughput, it is possible to record
The relevant parameter of gas.The relevant parameter includes but is not limited to throughput, accumulative throughput, gas-bearing formation pressure, test period.
Be provided with the 4th valve 43 between the outlet side 19 of measurement apparatus 35 and first, by the opening of the 4th valve 43 or
Close realize between the outlet side 19 of measurement apparatus 35 and first can break-make connection.
Pressure sensing can be connected in the first inlet end 17 of the first core holding unit 13 and the first outlet side 19
Device, can observe the air pressure size of the first inlet end 17 and the first outlet side 19.In the second air inlet of the second core holding unit 27
The outlet side 31 of end 29 and second can also be connected to pressure sensor, can observe the second inlet end 29 and the second outlet side
31 air pressure size.
Reservoir gas supply capacity detecting system 10 can also include at least one pressue device 45, by setting at least one to add
Pressure device 45 makes the core holding unit in reservoir gas supply capacity detecting system 10 increase confined pressure.In the present embodiment, at least one
The quantity of individual pressue device 45 is one, and it can pass through triple valve and the first core holding unit 13 and the second core holding unit 27
Connection, and inject high by confined pressure sap cavity and the confined pressure sap cavity of the second core holding unit 27 respectively to the first core holding unit 13
The confined pressure liquid of pressure, increases the confined pressure to making the seam matrix rock core 23 of rock core 21 and first.Specifically, at least one pressue device 45 can
To be computer controlled automatic high pressure syringe pump.Two can be simulated to the confined pressure for making the application of matrix rock core 23 of seam rock core 21 and first
Person is in the pressure condition being subject to when in stratum.
The reservoir gas supply capacity detecting system 10 that the application embodiment is provided, is simulated by pressure break by making seam rock core 21
Reservoir, the initial reservoir adjacent with the rock core by pressure break is simulated by the first matrix rock core 23, passes through the first core holding unit 13
With the second core holding unit 27 to the pressure state made in the seam rock core 21 and first application confined pressure simulated formation of matrix rock core 23, lead to
The natural gas crossed in injection gases at high pressure simulation reservoir, and then gas simulation gas well exploitation is released by the first outlet side 19, lead to
Cross the relevant parameter that measurement apparatus 35 measures gas.Realize can be after the pressure of laboratory simulation gas well exploitation scene, enter
And the influence for research pressure to reservoir gas supply capacity provides data basis.
Referring to Fig. 2, the application embodiment also provides a kind of application method of reservoir gas supply capacity detecting system 10, should
Method comprises the following steps.
Step S10：Seam rock core 21 will be made to be attached in the first confined pressure chamber 11 of the first core holding unit 13, by the first matrix
Rock core 23 is attached in the second confined pressure chamber 25 of the second core holding unit 27, makes the collection of seam rock core 21 and first matrix rock core 23 certainly
Same reservoir.
Step S20：The first core holding unit 13 is increased confined pressure to predetermined confined pressure, enclose the increase of the second core holding unit 27
It is depressed into the predetermined confined pressure.
In the present embodiment, the first core holding unit 13 and the second rock core can be made by least one pressue device 45
Clamper 27 is to making confined pressure that seam rock core 21 and first matrix rock core 23 applies to the predetermined confined pressure.
Step S30：Using at least one high-pressure air source 33 respectively to the first core holding unit 13 and the second core holding unit
27 injection gases at high pressure to the first confined pressure chambers 11 and the second confined pressure chamber 25 reach preset air pressure.
In the present embodiment, preset air pressure can be that simulation makes seam rock core 21 and first matrix rock core 23 in stratum
When barometric information.
Step S40：Connect the first confined pressure chamber 11 and the second confined pressure chamber 25.
In the present embodiment, by opening the first valve 37 the first confined pressure chamber 11 can be made to be connected with the second confined pressure chamber 25
It is logical.
Step S50：The first outlet side 19 and measurement apparatus 35 are connected, measures and record to go out from first by measurement apparatus 35
The relevant parameter for the gas that gas end 19 is flowed out.
Referring to Fig. 1, in the embodiment of the application, the first confined pressure chamber 11 of the first core holding unit 13 can also
The second matrix rock core 47 is housed, the second matrix rock core 47, which is located at, makes seam rock core 21 close to the side of the first inlet end 17, the first rock
The side wall of heart clamp holder 13 is provided with the second through hole 49 with the region that the second matrix rock core 47 is contacted.By setting the second matrix
Rock core 47 can simulate the initial reservoir in the depth direction of the relative reservoir by pressure break, and so research pressure break is pointed to depth direction
Initial reservoir influence.
Reservoir gas supply capacity detecting system 10 also includes：With the 3rd confined pressure chamber 53 that can house the 3rd matrix rock core 51
3rd core holding unit 55.3rd core holding unit 55 have the 3rd inlet end 57 and can break-make be connected with the second through hole 49
The 3rd outlet side 59.It is arranged such so that the 3rd confined pressure chamber 53 can be connected with the first confined pressure chamber 11, and then can pass through
First outlet side 19 releases gas and carries out simulation exploitation.
At least one high-pressure air source 33 can by the 3rd inlet end 57 to the 3rd confined pressure chamber 53 inject gases at high pressure.In this reality
Apply in mode, the quantity of at least one high-pressure air source 33 can be one, now using four-way valve by high-pressure air source 33 respectively with
First inlet end 17, the second inlet end 29 are connected with the 3rd inlet end 57.It can also set three high-pressure air sources 33 respectively with
One inlet end 17, the second inlet end 29 are connected with the 3rd inlet end 57.In at least one inlet end 57 of high-pressure air source 33 and the 3rd
Between be provided with the 5th valve 58, realize that at least one high-pressure air source 33 is entered with the 3rd by opening or closing for the 5th valve 58
Gas end 57 can break-make connection.
Pressure sensor is connected in the 3rd inlet end 57 of the 3rd core holding unit 55 and the 3rd outlet side 59, it is real
The pressure size of the 3rd inlet end 77 and the 3rd outlet side 59 can now be observed.The 3rd outlet side 59 and the second through hole 49 it
Between be provided with the 6th valve 60, the 3rd outlet side 59 and the second through hole are realized by the 2nd the 6th opening or closing for valve 60
49 can break-make connection.
In the present embodiment, at least one pressue device 45 can inject to the confined pressure sap cavity of the 3rd core holding unit 55
Confined pressure liquid, to increase the confined pressure to the 3rd matrix rock core 51.The quantity of at least one pressue device 45 can be one, and it passes through
Confined pressure sap cavity, the confined pressure sap cavity of the second core holding unit 27 and the 3rd rock core folder of four-way valve respectively with the first core holding unit 13
The confined pressure sap cavity connection of holder 55.Certainly, the quantity of at least one pressue device 45 can also be three, and respectively with the first rock
The confined pressure sap cavity of the confined pressure sap cavity of heart clamp holder 13, the confined pressure sap cavity of the second core holding unit 27 and the 3rd core holding unit 55 connects
Connect.
Referring to Fig. 3, present embodiment also provides a kind of application method of reservoir gas supply capacity detecting system 10, this is used
Method comprises the following steps.
Step S11：It will make and stitch the first confined pressure that the matrix rock core 47 of rock core 21 and second is attached to the first core holding unit 13
In chamber 11, the second matrix rock core 47, which is located at, makes seam rock core 21 close to the side of the first inlet end 17, and the first matrix rock core 23 is pacified
It is filled in the second confined pressure chamber 25 of the second core holding unit 27, the 3rd matrix rock core 51 is attached to the 3rd core holding unit 55
In 3rd confined pressure chamber 53, seam rock core 21, the first matrix rock core 23, the second matrix rock core 47 and the collection of the 3rd matrix rock core 51 are made certainly
Same reservoir.
Step S21：The first core holding unit 13, the second core holding unit 27 and the 3rd core holding unit 69 is set to increase respectively
Confined pressure is to predetermined confined pressure.
Step S31：Using at least one high-pressure air source 33 respectively to the first core holding unit 13, the second core holding unit 27
Reached with the 3rd core holding unit 55 injection gases at high pressure to the first confined pressure chamber 11, the second confined pressure chamber 25 and the 3rd confined pressure chamber 53
Preset air pressure.
Step S41：Second confined pressure chamber 25 and the 3rd confined pressure chamber 53 are connected with the first confined pressure chamber 11 respectively.
Step S50：The first outlet side 19 and measurement apparatus 35 are connected, measures and record to go out from first by measurement apparatus 35
The relevant parameter for the gas that gas end 19 is flowed out.
Referring to Fig. 1, in the embodiment of the application, the first confined pressure chamber 11 of the first core holding unit 13 can also
House the 4th matrix rock core 61, the 4th matrix rock core 61 is located at the second matrix rock core 47 close to the side of the first inlet end 17, the
The side wall of one core holding unit 13 is provided with the 3rd through hole 63 with the region that the 4th matrix rock core 61 is contacted.So further increase
Plus depth of reservoirs of the simulation along the depth direction of pressure break.
Reservoir gas supply capacity detecting system 10 also includes：With the 4th confined pressure chamber 67 that can house the 5th matrix rock core 65
4th core holding unit 69, the 4th core holding unit 69 have the 4th inlet end 71 and can break-make be connected with the 3rd through hole 63
The 4th outlet side 73.By setting the 5th matrix rock core 65 further to increase reservoir of the simulation along the horizontal direction of pressure break
Depth.
At least one high-pressure air source 33 can by the 4th inlet end 71 to the 4th confined pressure chamber 67 inject gases at high pressure.In this reality
Apply in mode, the quantity of at least one high-pressure air source 33 can be one, now using five-way valve by high-pressure air source 33 respectively with
First inlet end 17, the second inlet end 29, the 3rd inlet end 57 are connected with the 4th inlet end 71.Four high pressure gas can also be set
Source 33 is connected with the first inlet end 17, the second inlet end 29, the 3rd inlet end 57 and the 4th inlet end 71 respectively.At at least one
The 7th valve 72 is provided between the inlet end 71 of high-pressure air source 33 and the 4th, realization is opened or closed extremely by the 7th valve 72
A few inlet end 71 of high-pressure air source 33 and the 4th can break-make connection.
Pressure sensor is connected in the 4th inlet end 71 of the 4th core holding unit 69 and the 4th outlet side 73, it is real
The pressure size of the 4th inlet end 71 and the 4th outlet side 73 can now be observed.The 4th outlet side 73 and the 3rd through hole 63 it
Between be provided with the 8th valve 74, realize that the 4th outlet side 73 and the 3rd through hole 63 can by opening or closing for the 8th valve 74
The connection of break-make.
In the present embodiment, at least one pressue device 45 can inject to the confined pressure sap cavity of the 4th core holding unit 69
Confined pressure liquid, to increase the confined pressure to the 5th matrix rock core 65.The quantity of at least one pressue device 45 can be one, and it passes through
Confined pressure sap cavity, the confined pressure sap cavity of the second core holding unit 27, the 3rd rock core folder of five-way valve respectively with the first core holding unit 13
The confined pressure sap cavity connection of holder 55 and the confined pressure sap cavity of the 4th core holding unit 69 are connected.Certainly, at least one pressue device 45
Quantity can also be four, and confined pressure sap cavity respectively with the first core holding unit 13, the confined pressure of the second core holding unit 27
Sap cavity, the confined pressure sap cavity connection of the 3rd core holding unit 55 and the confined pressure sap cavity connection of the 4th core holding unit 69.
Referring to Fig. 4, present embodiment also provides a kind of application method of reservoir gas supply capacity detecting system 10, it is described to make
Comprised the following steps with method.
Step S12：Seam rock core 21, the second matrix rock core 47 and the 4th matrix rock core 61 will be made and be attached to the clamping of the first rock core
In first confined pressure chamber 11 of device 13, the second matrix rock core 47, which is located at, makes seam rock core 21 close to the side of the first inlet end 17, the 4th
Matrix rock core 61 is located at the second matrix rock core 47 close to the side of the first inlet end 17；First matrix rock core 23 is attached to second
In second confined pressure chamber 25 of core holding unit 27, the 3rd matrix rock core 51 is attached to the 3rd confined pressure of the 3rd core holding unit 55
In chamber 53, the 5th matrix rock core 65 is attached in the 4th confined pressure chamber 67 of the 4th core holding unit 69；Make seam rock core 21, first
Matrix rock core 23, the second matrix rock core 47, the 3rd matrix rock core 51, the 4th matrix rock core 61 and the collection of the 5th matrix rock core 65 are certainly
Same reservoir.
Step S22：Make the first core holding unit 13, the second core holding unit 27, the 3rd core holding unit 55 and the 4th rock
Heart clamp holder 69 increases confined pressure to predetermined confined pressure respectively.
Step S32：Using at least one high-pressure air source 33 respectively to the first core holding unit 13, the second core holding unit
27th, the 3rd core holding unit 55 and the 4th core holding unit 69 inject gases at high pressure to the first confined pressure chamber 11, the second confined pressure chamber 25,
3rd confined pressure chamber 53 and the 4th confined pressure chamber 67 reach preset air pressure.
Step S42：Second confined pressure chamber 25, the 3rd confined pressure chamber 53 and the 4th confined pressure chamber 67 are connected with the first confined pressure chamber 11 respectively
It is logical.
Step S50：The first outlet side 19 and measurement apparatus 35 are connected, measures and record to go out from first by measurement apparatus 35
The relevant parameter for the gas that gas end 19 is flowed out.
The reservoir gas supply capacity detecting system that the application embodiment is provided, by making seam rock core simulation by the storage of pressure break
Layer, the initial reservoir adjacent with the rock core by pressure break is simulated by matrix rock core, and confined pressure is applied to rock core by core holding unit
Pressure state in simulated formation, by injecting the natural gas in gases at high pressure simulation reservoir, and then is put by the first outlet side
Go out gas simulation gas well exploitation, the relevant parameter of gas is measured by measurement apparatus.It can be seen that, the reservoir gas supply capacity inspection of the application
Examining system is realized the relevant parameter of the post-fracturing reservoir gas supply capacity of detection by simulating by the gas production process of the reservoir of pressure break.
Several embodiments of the present invention are the foregoing is only, those skilled in the art is according to application documents disclosure
Various changes or modification can be carried out to the embodiment of the present invention without departing from the spirit and scope of the present invention.
Claims (10)
1. a kind of reservoir gas supply capacity detecting system, it is characterised in that including：
The first core holding unit with the first confined pressure chamber surrounded by side wall, the side wall is provided with the first through hole, institute
State the first core holding unit have back to the first inlet end and the first outlet side, first core holding unit, which can be housed, to be made
Seam rock core simultaneously applies confined pressure to the seam rock core of making, and the seam rock core of making has to enter from first outlet side towards described first
The crack of the direction extension at gas end, first through hole is located at the side wall and made with described in the region that seam rock core is in contact；
The second core holding unit with the second confined pressure chamber that can house the first matrix rock core, second core holding unit has
Second inlet end and can break-make the second outlet side being connected with first through hole；
At least one high-pressure air source, at least one described high-pressure air source can respectively with first inlet end and second air inlet
End can break-make connection, gases at high pressure can be injected to the first confined pressure chamber and the second confined pressure chamber；
With first outlet side can break-make connection measurement apparatus, the measurement apparatus can be measured from first outlet side
The relevant parameter of the gas of outflow.
2. reservoir gas supply capacity detecting system as claimed in claim 1, it is characterised in that：First inlet end with it is described
First pressure sensor is provided between at least one high-pressure air source；Set between first outlet side and the measurement apparatus
It is equipped with second pressure sensor；The 3rd pressure biography is provided between second inlet end and at least one described high-pressure air source
Sensor；The 4th pressure sensor is provided between second outlet side and first through hole.
3. reservoir gas supply capacity detecting system as claimed in claim 1, it is characterised in that：The institute of first core holding unit
The second matrix rock core can also be housed by stating the first confined pressure chamber, and the second matrix rock core is located at the seam rock core of making close to described first
The side of inlet end, the side wall of first core holding unit is provided with second with the region that the second matrix rock core is contacted and passed through
Through hole；
The reservoir gas supply capacity detecting system also includes：The 3rd rock with the 3rd confined pressure chamber that can house the 3rd matrix rock core
Heart clamp holder, the 3rd core holding unit have the 3rd inlet end and can break-make the be connected with second through hole the 3rd
Outlet side；
At least one described high-pressure air source can by the 3rd inlet end to the 3rd confined pressure chamber inject gases at high pressure.
4. reservoir gas supply capacity detecting system as claimed in claim 3, it is characterised in that：The 3rd inlet end with it is described
The 5th pressure sensor is provided between at least one high-pressure air source；Between the 3rd outlet side and second through hole
It is provided with the 6th pressure sensor.
5. reservoir gas supply capacity detecting system as claimed in claim 3, it is characterised in that：The institute of first core holding unit
The 4th matrix rock core can also be housed by stating the first confined pressure chamber, and the 4th matrix rock core is located at the second matrix rock core close to described
The side of first inlet end, the side wall of first core holding unit is provided with the region that the 4th matrix rock core is contacted
Three through holes；
The reservoir gas supply capacity detecting system also includes：The 4th rock with the 4th confined pressure chamber that can house the 5th matrix rock core
Heart clamp holder, the 4th core holding unit have the 4th inlet end and can break-make the be connected with the 3rd through hole the 4th
Outlet side；
At least one described high-pressure air source can by the 4th inlet end to the 4th confined pressure chamber inject gases at high pressure.
6. reservoir gas supply capacity detecting system as claimed in claim 5, it is characterised in that：The 4th inlet end with it is described
The 7th pressure sensor is provided between at least one high-pressure air source；Between the 4th outlet side and the 3rd through hole
It is provided with the 8th pressure sensor.
7. the reservoir gas supply capacity detecting system as described in claim 1 to 6 is any, it is characterised in that：The reservoir supplies energy
Force detection system is by setting at least one pressue device to increase the core holding unit in the reservoir gas supply capacity detecting system
Plus confined pressure.
8. a kind of application method of reservoir gas supply capacity detecting system as claimed in claim 1 or 2, it is characterised in that described
Application method includes：
The first confined pressure intracavitary that seam rock core is attached to first core holding unit is made by described, by the first matrix rock
Feel at ease and be filled to the second confined pressure intracavitary of second core holding unit, it is described to make seam rock core and the first matrix rock core collection certainly
Same reservoir；
First core holding unit is increased confined pressure to predetermined confined pressure, second core holding unit is increased confined pressure to described
Predetermined confined pressure；
Injected respectively to first core holding unit and second core holding unit using at least one described high-pressure air source
Gases at high pressure to the first confined pressure chamber and the second confined pressure chamber reaches preset air pressure；
Connect the first confined pressure chamber and the second confined pressure chamber；
First outlet side and the measurement apparatus are connected, is measured and is recorded from first outlet by the measurement apparatus
Hold the relevant parameter of the gas of outflow.
9. the application method of a kind of reservoir gas supply capacity detecting system as described in claim 3 or 4, it is characterised in that described
Application method includes：
Seam rock core is made by described and the second matrix rock core is attached to the first confined pressure chamber of first core holding unit
Interior, the second matrix rock core is located at the seam rock core of making close to the side of first inlet end, by the first matrix rock
Feel at ease and be filled to the second confined pressure intracavitary of second core holding unit, the 3rd matrix rock core is attached to the described 3rd
The 3rd confined pressure intracavitary of core holding unit, it is described make seam rock core, the first matrix rock core, the second matrix rock core and
The 3rd matrix rock core is gathered from same reservoir；
First core holding unit, second core holding unit and the 3rd core holding unit is set to increase confined pressure respectively extremely
Predetermined confined pressure；
Using at least one described high-pressure air source respectively to first core holding unit, second core holding unit and described
3rd core holding unit injection gases at high pressure to the first confined pressure chamber, the second confined pressure chamber and the 3rd confined pressure chamber reaches pre-
Determine air pressure；
The second confined pressure chamber and the 3rd confined pressure chamber are connected with the first confined pressure chamber respectively；
First outlet side and the measurement apparatus are connected, is measured and is recorded from first outlet by the measurement apparatus
Hold the relevant parameter of the gas of outflow.
10. the application method of a kind of reservoir gas supply capacity detecting system as described in claim 5 or 6, it is characterised in that described
Application method includes：
Seam rock core, the second matrix rock core and the 4th matrix rock core made is attached to first core holding unit
The first confined pressure intracavitary, the second matrix rock core is located at the seam rock core of making close to the side of first inlet end,
The 4th matrix rock core is located at the second matrix rock core close to the side of first inlet end；By the first matrix rock
Feel at ease and be filled to the second confined pressure intracavitary of second core holding unit, the 3rd matrix rock core is attached to the described 3rd
The 3rd confined pressure intracavitary of core holding unit, the 5th matrix rock core is attached to described in the 4th core holding unit
4th confined pressure intracavitary；It is described make seam rock core, the first matrix rock core, the second matrix rock core, the 3rd matrix rock core,
The 4th matrix rock core and the 5th matrix rock core are gathered from same reservoir；
Make first core holding unit, second core holding unit, the 3rd core holding unit and the 4th rock core
Clamper increases confined pressure to predetermined confined pressure respectively；
Using at least one described high-pressure air source respectively to first core holding unit, second core holding unit and described
3rd core holding unit injects gases at high pressure to the first confined pressure chamber, the second confined pressure chamber, the 3rd confined pressure chamber and described the
Four confined pressure chambers reach preset air pressure；
The second confined pressure chamber, the 3rd confined pressure chamber and the 4th confined pressure chamber are connected with the first confined pressure chamber respectively；
First outlet side and the measurement apparatus are connected, is measured and is recorded from first outlet by the measurement apparatus
Hold the relevant parameter of the gas of outflow.
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| CN109403939A (en) * | 2018-10-17 | 2019-03-01 | 西南石油大学 | A kind of hypotonic tight gas reservoir plane gas supply experimental method considering nearly wellblock pressure break |
| CN112082945A (en) * | 2019-06-13 | 2020-12-15 | 中国石油天然气股份有限公司 | Prediction device and method for mobility of water layer water body of gas reservoir and controller |
| CN116050623B (en) * | 2023-02-01 | 2023-05-30 | 西南石油大学 | Method for calculating and evaluating gas supply capacity of tight gas reservoir |
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| CN101839841B (en) * | 2010-04-08 | 2012-07-11 | 西南石油大学 | Adsorption/desorption experimental apparatus and method for gas in rock pore |
| CN102288629B (en) * | 2011-07-01 | 2014-04-16 | 中联煤层气国家工程研究中心有限责任公司 | Core holder |
| CN202814960U (en) * | 2012-08-15 | 2013-03-20 | 中国石油天然气股份有限公司 | Physical simulation experimental device for water invasion performance of fissured gas reservoir with bottom water |
| CN103234888B (en) * | 2013-04-17 | 2014-12-24 | 中国石油天然气股份有限公司 | Long rock core holder |
| CN204044149U (en) * | 2014-08-22 | 2014-12-24 | 中国石油天然气股份有限公司 | Reservoir gas supply capacity detection system |
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