CN108169462A - Has channeling simulation system - Google Patents
Has channeling simulation system Download PDFInfo
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- CN108169462A CN108169462A CN201711121313.2A CN201711121313A CN108169462A CN 108169462 A CN108169462 A CN 108169462A CN 201711121313 A CN201711121313 A CN 201711121313A CN 108169462 A CN108169462 A CN 108169462A
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- Prior art keywords
- channeling
- pipe
- end cap
- flange end
- cement mortar
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; ceramics; glass; bricks
- G01N33/383—Concrete, cement
Abstract
A kind of has channeling simulation system is disclosed herein, including cement mortar unit, air supply unit, heating unit and test cell；Cement mortar unit is connected with test cell, and cement mortar unit is used for the cement of test for providing；Air supply unit is connected with test cell, and air supply unit is used for the preset pressure of test for providing；Test cell is arranged in heating unit, and heating unit is used for the preset temperature of test for providing；Test cell includes the has channeling pipe for measuring cement has channeling process and the weightless pipe for measuring cement liquid column hydrostatic pressure；Has channeling pipe, weightless pipe are arranged in cartridge heater, and has channeling pipe, weightless pipe are both provided with the ring-shaped cavity for accommodating cement, has channeling pipe, weightless pipe bottom end be both provided with pressure detection mechanism；The bottom end of the ring-shaped cavity of has channeling pipe is provided with the first cement mortar input port and first gas input port, and top is provided with pressurization detection mouth；The bottom end of the ring-shaped cavity of weightless pipe is provided with the second cement mortar input port.
Description
Technical field
This application involves but be not limited to oil well corollary equipment technical field, especially a kind of has channeling simulation system.
Background technology
In the Hou Ning stages after cementing, it is main problem in gas well cementing to alter on high pressure gas.
, there is the following in the main reason for has channeling：Cement sheath replacement efficiency is low when the 1st, cementing the well, and forms altering for cement mortar entrainment
Slot, if gas pressure is more than hydrostatic head of liquid, gas is escaped along slot band is altered；2nd, due to cement quality problem, make in annular space
The bonding quality of cement and casing or formation cementation face is poor, and gas stitches blowby along annular space；3rd, cement mortar column and water in work progress
Mud column gross pressure is less than gas pressure.I.e. " cement slurry weight loss " forms has channeling；Wherein, it is the reason of cement slurry weight loss：Cement
Slurry dehydration is big, and the aquation of cement mortar is shunk, cementitious grout itself suspension.
The main harm of has channeling has the following：1st, well cementation acoustic amplitude is high, and cementing quality is unqualified；2nd, the production capacity of payzone is lost
Deprotection, causes production capacity to decline；3rd, gas blowout accident occurs；4th, multiple squeeze method makes cementing operation repeat operation.
In the prior art, corresponding simulating test device is provided with for this phenomenon, is matched with Simulation evaluation oil-well cement
Square anti-gas channeling ability and hydration process to fully understand the comprehensive performance of cement, and obtain related data to serve later stage reality
It applies on border.It is had a disadvantage that however, current test device exists：Apparatus structure is complicated, and test operation is cumbersome, it is impossible to effective mould
Intend actual conditions, test result deviation is larger etc..
Invention content
The technical issues of the application solves is to provide a kind of has channeling simulation system, can effectively overcome and exist in the prior art
The defects of, it is capable of the structure composition of optimal inspection device, reduces the complexity of operation；Further, additionally it is possible to effectively simulation
Actual conditions can effectively improve the accuracy of test result.
In order to solve the above technical problems, this application provides a kind of has channeling simulation system, it is single including cement mortar unit, gas supply
Member, heating unit and test cell；
The cement mortar unit is connected with the test cell, and the cement mortar unit is used for the water of test for providing
Mud；The air supply unit is connected with the test cell, and the air supply unit is used for the preset pressure of test for providing；It is described
Test cell is arranged in the heating unit, and the heating unit is used for the preset temperature of test for providing；
The test cell is included for measuring the has channeling pipe of cement has channeling process and for measuring cement liquid column hydrostatic pressure
Weightless pipe；The has channeling pipe, weightless pipe are arranged in the cartridge heater, and the has channeling pipe, weightless pipe are both provided with and are used for
Accommodate the ring-shaped cavity of cement, the has channeling pipe, weightless pipe bottom end be both provided with pressure detection mechanism；The ring of the has channeling pipe
The bottom end of shape cavity is provided with the first cement mortar input port and first gas input port, and top is provided with pressurization detection mouth；It is described
The bottom end of the ring-shaped cavity of weightless pipe is provided with the second cement mortar input port.
Above-mentioned has channeling simulation system can also have following features,
The heating unit includes cartridge heater, and the cartridge heater is equipped with the cavity for accommodating has channeling pipe and weightless pipe, with
And the heating chamber around cavity setting, the heating chamber are provided with the interface for connecting fuel tank pipeline.
Above-mentioned has channeling simulation system can also have following features,
The cement mortar unit includes cement mortar tank, is managed for connecting the first of cement mortar tank and the first cement mortar input port
Road with for connecting the second pipeline of cement mortar tank and the second cement mortar input port.
Above-mentioned has channeling simulation system can also have following features,
The air supply unit includes gas tank, for the third pipeline that connects gas tank and first gas input port and for even
4th pipeline of ventilation tank and gas delivery port.
Above-mentioned has channeling simulation system can also have following features,
The has channeling pipe, weightlessness Guan Jun include connecting rod and inner sleeve, and the connecting rod is set in the inner sleeve, described
Inner sleeve is set in the cartridge heater, and the ring-shaped cavity is formed between the inner wall of the inner sleeve and the connecting rod.
Above-mentioned has channeling simulation system can also have following features,
The inner sleeve bottom end of the has channeling pipe is connected with first flange end cap, and top is connected with second flange end cap, described
The both ends of connecting rod extend through first flange end cap and second flange end cap；
The first cement mortar input port and the first gas input port are arranged on the first flange end cap, described
Pressurization detection mouth is arranged on the second flange end cap.
Above-mentioned has channeling simulation system can also have following features,
The inner sleeve bottom end of the weightlessness pipe is provided with third flange end cap, and top is connected with the 4th flange end cap, described
The both ends of connecting rod extend through third flange end cap and the 4th flange end cap；
The second cement mortar input port is arranged in the third flange end cap.
Above-mentioned has channeling simulation system can also have following features,
Pressure detection mechanism is both provided in the first flange end cap and the third flange end cap.
Above-mentioned has channeling simulation system can also have following features,
Annular filter screen is additionally provided in the first flange end cap, the first gas input port is arranged on the annular filter
Net deviates from the side of the ring-shaped cavity, and the first cement mortar input port is arranged on the annular filter screen towards the ring chamber
The side of body；
Ring baffle is additionally provided in the second flange end cap, the ring baffle is arranged on the end of described sleeve pipe,
Venthole is offered on the ring baffle.
Above-mentioned has channeling simulation system can also have following features,
The both ends of the connecting rod extend respectively to the outside of the first flange end cap, the second flange end cap, institute
The both ends for stating connecting rod are respectively connected with clamp nut, and the clamp nut is used for the first flange end cap, second method
Blue end cap is fixed in the connecting rod.
The application above-mentioned technical proposal has the advantages that：
Compared with the prior art, above-mentioned has channeling simulation system by cement mortar unit, air supply unit, test cell and adds
The setting of hot cell, simulation cement mortar that can the be true to nature weightless whole process, and can continuously measure record naturally in annular space
Cement generates the weight-loss curve and data of quiet gelling and hydration process；Meanwhile above device can also be tested after injection cement
The ability of cement-slurry method control formation gas intrusion, the simulation various parameters that this device can be practical, such as：Temperature, stratum
Pressure, liquid-column height etc.；Above device is preferably controlled by computer, to realize real time data acquisition, display, storage.
Further, the present invention can effectively simulate cement mortar on stratum and set by the setting of above-mentioned ring-shaped cavity
Ring-shaped cavity between pipe；Can stratum can be realized by the above-mentioned first gas input port being arranged at first flange end cap
Pressure is capable of the practical flow direction of effective simulated formation pressure out of bottom of device injection ring-shaped cavity；It is above-mentioned to be arranged on the second method
Whether pressurization detection mouth at blue end cap, can detect has gas to migrate after concrete column to device from bottom of device,
And then it can effectively detect has channeling process in annular space.
Further, the present invention can also can effectively ensure that blocking cement enters survey by the setting of above-mentioned annular filter screen
In the first gas input port for altering device, the normal operation inside system pipeline can effectively ensure that, to ensure final test knot
The accuracy of fruit；It should be noted that the setting of above-mentioned annular filter screen, will not scurry into gas cement sheath null process and cause shadow
It rings.
Further, the present invention can also can effectively be transmitted by the setting of above-mentioned ring baffle and carry out self-pressurization detection mouth
Pressure, the cement mortar column when surveying has channeling can also be effectively prevent integrally to move up, cement mortar column is enabled to keep current position
It puts, cement mortar column in test process can effectively be avoided to move up caused has channeling test error, can effectively ensure that final survey
The accuracy of test result；The setting of above-mentioned venthole can effectively ensure that has channeling gas smoothly enters second from cement mortar column
At pressurization detection mouth in flange end cap.
Other features and advantage will illustrate in the following description, also, partly become from specification
It obtains it is clear that being understood by implementing the embodiment of the present invention.The purpose of the application and other advantages can be by illustrating
Specifically noted structure is realized and is obtained in book, claims and attached drawing.
Description of the drawings
Attached drawing is used for providing further understanding technical scheme, and a part for constitution instruction, with this
The embodiment of application for explaining the technical solution of the application, does not form the limitation to technical scheme together.
Fig. 1 is the structure diagram one of the embodiment of the present invention one；
Fig. 2 is the structure diagram two of the embodiment of the present invention one；
Fig. 3 is the partial enlarged view at A1 in Fig. 1；
Fig. 4 is the partial enlarged view at A2 in Fig. 1；
Shown by reference numeral：
1- has channeling pipes, 11- first flange end caps, 12- connecting rods, 13- inner sleeves, 14- second flange end caps, 15- annulars
Baffle, 16- annular filter screens；
2- weightlessness pipes, 21- third flange end caps, the 4th flange end caps of 22-, 3- cartridge heaters；
The first cement mortars of a- input port, b- first gas input port, c- gas delivery ports, d- fuel tank oil inlets, e- fuel tanks
Oil outlet.
Specific embodiment
Embodiments herein is described in detail below in conjunction with attached drawing.It should be noted that do not conflicting
In the case of, the feature in embodiment and embodiment in the application mutually can be combined arbitrarily.
Embodiment one：
As shown in Figure 1, the embodiment of the present invention one provides a kind of has channeling simulation system, cement mortar unit can be included, supplied
Gas unit, heating unit and test cell；Wherein, cement mortar unit is connected with test cell, and cement mortar unit is used to provide
For the cement of test；Air supply unit is connected with test cell, and air supply unit is used for the preset pressure of test for providing；Test
Unit is arranged in heating unit, and heating unit is used for the preset temperature of test for providing.
With reference to shown in Fig. 2, Fig. 3 and Fig. 4, test cell includes cartridge heater 3, the has channeling for measuring cement has channeling process
Pipe 1 and the weightless pipe 2 for measuring cement liquid column hydrostatic pressure；Wherein, has channeling pipe 1, weightless pipe 2 are arranged in cartridge heater 3, gas
Alter pipe 1, weightless pipe 2 is both provided with ring-shaped cavity for accommodating cement；The bottom end of the ring-shaped cavity of has channeling pipe 1 is provided with first
Cement mortar input port a and first gas input port b, top are provided with pressurization detection mouth c；The bottom end of the ring-shaped cavity of weightless pipe 2
It is provided with the second cement mortar input port；Has channeling pipe 1, weightless pipe 2 bottom end be both provided with pressure detection mechanism.
In concrete operations, can the cement liquid column hydrostatic pressure value of unit height can be realized by the setting of above-mentioned weightless pipe 2
Detection operation, can the detection of cement mortar anti-channeling ability can be realized by the setting of above-mentioned has channeling pipe 1, can by above-mentioned plus
The setting of hot cylinder 3 is capable of the temperature of effective simulated formation so that test result is more accurate.
Compared with the prior art, the simulation cement mortar that above-mentioned has channeling simulating test device can be true to nature loses naturally in annular space
The whole process of weight, and can continuously measure weight-loss curve and data that cement generates quiet gelling and hydration process；Meanwhile above-mentioned dress
The ability of cement formula control formation gas intrusion after injection cement can also be tested by putting, and the simulation that this device can be practical is each
Kind parameter, such as：Temperature, strata pressure, liquid-column height etc.；Above device is preferably controlled by computer, to realize data
Acquisition in real time, display, storage.
In the present embodiment, above-mentioned cement mortar unit can include cement mortar tank, for connecting cement mortar tank and the first cement
Starch the first pipeline of input port a with for connecting the second pipeline of cement mortar tank and the second cement mortar input port.
In concrete operations, above-mentioned cement mortar unit can include the first cement mortar tank and the second cement mortar tank, the first cement
Slurry tank and the second cement mortar tank are respectively communicated with the first pipeline and the second pipeline, to realize that has channeling pipe 1 and the independent of weightless pipe 2 supply water
Mud operates；Optionally, above-mentioned cement mortar unit can also include a cement mortar tank, and above-mentioned cement mortar tank is connected by the first pipeline
Logical first cement mortar input port a, by second the second cement mortar of pipeline connection input port, to realize has channeling pipe 1 and weightless pipe 2
It is compound to supply cementing operation；Those skilled in the art can carry out corresponding selection setting according to actual conditions.Above-mentioned first pipeline
With being both provided with testing agency on the second pipeline, to realize effective detection operation of cement mortar flow.
In the present embodiment, above-mentioned air supply unit includes gas tank, the third pipe for connecting gas tank and first gas input port b
Road and the 4th pipeline for connecting gas tank and gas delivery port c.
In concrete operations, above-mentioned air supply unit can include the first gas tank and the second gas tank, and the first gas tank passes through third pipe
Road is connected with first gas input port b, and to realize the given operation of preset pressure, above-mentioned second gas tank connects with gas delivery port c
It is logical, to realize that the quantitative detection of output gas operates, and then to judge that has channeling provides necessary basic data.Above-mentioned third pipeline
Corresponding testing agency is both provided with the 4th pipeline, to realize the accurate detection operation of preset pressure.
In the present embodiment, above-mentioned has channeling pipe 1, weightless pipe 2 include connecting rod and inner sleeve, and connecting rod is set on inner sleeve
In, inner sleeve is set in cartridge heater 3, and ring-shaped cavity is formed between the inner wall and connecting rod of inner sleeve.Above-mentioned has channeling pipe 1 and weightlessness
The main structure body of pipe 2 is identical, is now described in detail based on has channeling pipe 1：
In concrete operations, above-mentioned has channeling pipe 1 includes connecting rod 12 and inner sleeve 13；Connecting rod 12 is set in inner sleeve 13,
Ring-shaped cavity is formed between the inner wall of inner sleeve 13 and connecting rod 12；One end of inner sleeve 13 is connected with first flange end cap 11,
The other end is connected with second flange end cap 14, and the both ends of connecting rod 12 extend through first flange end cap 11 and second flange end cap
14；First flange end cap 11 is equipped with the first cement mortar input port a and first gas input port b, and second flange end cap 14, which is equipped with, to be added
Pressure detection mouth c, the first cement mortar input port a, first gas input port b and pressurization detection mouth c are connected with ring-shaped cavity.
In concrete operations, can by the setting of above-mentioned ring-shaped cavity, can effectively simulate cement mortar stratum and casing it
Between ring-shaped cavity；Above-mentioned the first cement mortar input port a being arranged at second flange end cap 14, can realize cement from device
In bottom injection ring-shaped cavity；When cement mortar fills completely to be overflowed at the top of device, slip casting can be stopped, closing valve；On
The cooperation of the first cement mortar input port a and ring-shaped cavity is stated, practical well cementation can be simulated, cement mortar is returned from sleeve bottom into annular space
Process.
Further, it can also be realized by the above-mentioned first gas input port b being arranged at first flange end cap 11
Strata pressure is capable of the practical flow direction of effective simulated formation pressure out of bottom of device injection ring-shaped cavity；It is above-mentioned to be arranged on
Whether pressurization detection mouth c at two flange end caps 14, can detect has gas to be input to dress after concrete column from bottom of device
Top set portion, and then can effectively detect has channeling process in annular space；Above-mentioned monitoring process can pass through the gas of measurement pressurization detection mouth c
The scale of construction and gas flow rate are realized.
Preferably, in the present embodiment, annular filter screen 16, first gas input are additionally provided in above-mentioned first flange end cap 11
Mouth b is arranged on the side that annular filter screen 16 deviates from ring-shaped cavity, and the first cement mortar input port a is arranged on annular filter screen 16 towards ring
The side of shape cavity.
In concrete operations, the setting of above-mentioned annular filter screen 16 can effectively ensure that blocking cement enters to survey and alter the of device
In one gas input port b, the normal operation inside system pipeline can effectively ensure that, to ensure the accurate of final testing result
Property；It should be noted that the setting of above-mentioned annular filter screen 16, will not scurry into gas cement sheath null process and impact.
Further, in the present embodiment, above-mentioned first flange end cap 11 is additionally provided with pressure measurement mouth, pressure measurement mouth and
One gas input port b is arranged on the same side of annular filter screen 16.In concrete operations, pass through the setting of above-mentioned pressure measurement mouth, energy
It enough realizes the real-time monitoring of the pressure value of cement annular space bottom, and then necessary basic number is provided for subsequent control analysis
According to.
In concrete operations, above-mentioned connecting rod 12 is provided with first annular step, and annular filter screen 16 is clamped on first annular
Between the inner face of rank and first flange end cap 11；In installation process, first gas input port b and pressure measurement mouth can be opened up
In the bottom of first flange end cap 11, above-mentioned first cement mortar input port a is opened on the side wall of first flange end cap 11, then
Annular filter screen 16 is arranged on the inner face of first flange end cap 11, and passes through above-mentioned first annular step clamping.Above-mentioned ring
The setting of shape strainer 16 can effectively avoid mud from entering first gas input port b or pressure measurement mouth, and then be effectively ensured most
The accuracy of whole test result.
Preferably, in the present embodiment, ring baffle 15 is additionally provided in above-mentioned second flange end cap 14, ring baffle 15 is set
It puts and offers venthole on the end of casing, ring baffle 15；In addition, above-mentioned second flange end cap 14 may be provided with multiple add
Detection mouth is pressed, to realize the test operation of the control of simulation different length cement mortar and has channeling amount.
In concrete operations, the setting of above-mentioned ring baffle 15 can effectively transmit the pressure from applied voltage test mouth, can
The cement mortar column when surveying has channeling is effectively prevent integrally to move up, cement mortar column is enabled to keep current position, can effectively be kept away
Exempt from cement mortar column in test process and move up caused has channeling test error, can effectively ensure that the accurate of final testing result
Property；The setting of above-mentioned venthole can effectively ensure that has channeling gas smoothly enters on second flange end cap 14 from cement mortar column
Pressurization detection mouth c at.
Further, in the present embodiment, above-mentioned connecting rod 12 is provided with the second ring-shaped step, and ring baffle 15 is clamped on
Between second ring step and the inner face of second flange end；Wherein, the setting of above-mentioned second ring-shaped step, can realize annular
Effective clamping operation of baffle 15.
In concrete operations, above-mentioned ring baffle 15 can be set in connecting rod 12, above-mentioned second ring-shaped step can have
Effect limitation ring baffle 15 moves down operation；Meanwhile the upper surface outer of above-mentioned ring baffle 15 can be held out against at second flange end
On the inner face of lid, and the peripheral wall of above-mentioned ring baffle 15 can contact with each other with edge in the end of inner sleeve 13；When connecting rod 12
When connecting fastening between connection fastening, second flange end cap 14 and inner sleeve 13 between second flange end cap 14, ring baffle
15 can realize that corresponding position is fixed.
Preferably, in the present embodiment, the both ends of connecting rod 12 extend respectively to first flange end cap 11, second flange end cap
14 outside, the both ends of connecting rod 12 are respectively connected with clamp nut, and clamp nut is used for first flange end cap 11, second flange
End cap 14 is fixed in connecting rod 12；Further, between above-mentioned inner sleeve 13 and first flange end cap 11, second flange lid
It is connected to be inserted into.
Further, in order to improving the overall sealing performance that device is altered in above-mentioned survey；Preferably, in the present embodiment, on
State on the contact surface of connecting rod 12 and inner sleeve 13, connecting rod 12 on the contact surface of first flange end cap 11, inner sleeve 13 with
Sealing ring is both provided on the contact surface of first flange end cap 11, on the contact surface of connecting rod 12 and second flange end cap 14；Into
One step, on the contact surface of above-mentioned ring baffle 15 and second flange end cap 14, the contact surface of ring baffle 15 and inner sleeve 13
On be both provided with sealing ring.
In concrete operations, annular filter screen 16 can be loaded onto from 12 lower end of connecting rod first, meanwhile, sealing ring is also mounted to connect
On extension bar 12 and on corresponding first flange end cap 11；And then first flange end cap 11 is connect with connecting rod 12, and by nut
It tightens；Sealing rubber ring is placed into 11 inside of first flange end cap, by phase between the bottom end of inner sleeve 13 and first flange end cap 11
It connects, the structure connection of 1 bottom of has channeling pipe can be completed at this time.Then, then by sealing ring it is installed to 12 upper end of connecting rod, annular
On baffle 15 and 15 outsides, and ring baffle 15 is arranged on inner sleeve 13, then second flange end cap 14 is sleeved on inner sleeve
13 and the outside of connecting rod 12, and nut is tightened in connecting rod 12, can complete the structure connection at 1 top of has channeling pipe at this time.
In the present embodiment, the inner sleeve bottom end of above-mentioned weightlessness pipe 2 is provided with third flange end cap 21, and the bottom end of connecting rod is passed through
Wear third flange end cap 21；Second cement mortar input port is arranged in third flange end cap 21.
In concrete operations, the operation of above-mentioned second cement mortar input port is similar to the first cement mortar input port of has channeling pipe 1
Operation, it is intended to realize cement from bottom of device injection ring-shaped cavity in, to simulate actual formation situation, and then can effectively protect
Demonstrate,prove the accuracy of test result.The setting of above-mentioned weightlessness pipe 2, it is intended to can realize the cement liquid column hydrostatic pressure value of unit height
Detection operation, and then by the multiple proportion between object height and unit height, to know the cement hydrostatic column of object height
The calculating operation of pressure value.In the present embodiment, it is above-mentioned weightlessness pipe 2 top may be configured as hatch frame, can simulate 100 DEG C with
Interior test environment.
Preferably, in the present embodiment, the inner sleeve top of above-mentioned weightlessness pipe 2 is connected with the 4th flange end cap 22, connecting rod
Top run through the 4th flange end cap 22；The top of weightless pipe 2 is additionally provided with second gas input port, and second gas input port is set
It puts in the 4th flange end cap 22.In concrete operations, the setting of above-mentioned top pressurization can realize 100 DEG C or more, such as 120 DEG C,
140 DEG C are waited the simulation of test environments, and then can effectively expand the test scope of weightless pipe 2.
Further, in the present embodiment, above-mentioned pressure detection mechanism is U-tube manometer, and U-tube manometer is separately positioned on the
In one flange end cap 11 and third flange end cap 21；In concrete operations, by the setting of above-mentioned U-tube manometer, can effectively it carry
High final measuring accuracy.
As shown in Figure 1, the left side in above-mentioned cartridge heater 3 is provided with has channeling pipe 1, right side is provided with weightless pipe 2；Above-mentioned has channeling
Pipe 1 and weightless pipe 2 can effectively ensure that the sample temperature in two experimental provisions in same hydronic cartridge heater 3
It is completely the same；Wherein, d is fuel tank oil inlet, and e is fuel tank oil outlet.
In concrete operations, above-mentioned cartridge heater 3 may be provided with the cavity for accommodating has channeling pipe 1 and weightless pipe 2 and surround
The heating chamber of cavity setting, heating chamber are provided with the interface for connecting fuel tank pipeline；Can by the setting of above-mentioned weightless pipe 2,
Corresponding zero-G test curve is measured, to determine the test pressure of has channeling experiment and time point, judges cement mortar by weight-loss curve
Whether weightlessness terminates, and judges the quality of different leakage-proof mud systems according to experimental result before cement slurry weight loss terminates,
It can be according to different hole condition contrived experiment schemes, to meet the needs of different well cementation.
Embodiment two：
The embodiment of the present invention two provides a kind of simulation test of the has channeling simulation system applied to described in embodiment one
Method, including：
Step a：The cement liquid column hydrostatic pressure value of the unit height in weightless pipe is detected by pressure detection mechanism, according to inspection
Numerical computations are surveyed to go out to need the liquid column hydrostatic pressure value applied；
Step b：Pressurized operation is carried out by the pressurization detection mouth of has channeling pipe, the pressure value of above-mentioned calculating is imposed, measures gas
It alters bottom of the tube pressure and records measured value；
Step c：After the measured value of pressure detection mechanism detection has channeling pipe reaches predetermined value, lead to from first gas input port
Enter the gas of constant pressure；
Step d：The cement has channeling amount of ring-shaped cavity is detected by the pressurization detection mouth of has channeling pipe.
In concrete operations, can the cement liquid column hydrostatic pressure value of unit height be measured, with 1 by the setting of above-mentioned weightless pipe
For meter Gao Du cement, the cement liquid column hydrostatic pressure value measured is a；If thinking, simulation measures the anti-channeling ability of 10 meters of height cement,
Then apply certain pressure in has channeling pipe, can specifically apply the pressure of 9a so that has channeling bottom of the tube pressure value reaches 10a i.e.
It can.
When the pressure value of has channeling pipe reaches strata pressure, the gas of constant pressure is passed through from first gas input port, with
The continuous reduction of has channeling tube top portion input pressure, the pressure differential become larger is generated in cement sheath bottom end and top；It and then can
By the pressurization detection mouth at has channeling tube top end, the parameters such as corresponding gas flow, flow velocity are detected, accurately to determine the anti-channeling of cement
Ability.
In the description of the present application, term " installation ", " connected ", " connection ", " fixation " etc. should all be interpreted broadly, example
Such as, " connection " may be fixed connection or may be dismantle connection, or integral connection；It can be directly connected, it can also
It is indirectly connected by intermediary.For the ordinary skill in the art, above-mentioned art can be understood as the case may be
The concrete meaning of language in this application.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean to combine at least one reality that the particular features, structures, materials, or characteristics that the embodiment or example describe are contained in the application
It applies in example or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or reality
Example.Moreover, description particular features, structures, materials, or characteristics can in any one or more embodiments or example with
Suitable mode combines.
Although those skilled in the art should be understood that embodiment disclosed by the embodiment of the present invention as above, described
The content only embodiment of the present invention and the embodiment that uses for ease of understanding, be not limited to the embodiment of the present invention.It is any
Technical staff in fields of the embodiment of the present invention, in the premise for not departing from the spirit and scope disclosed by the embodiment of the present invention
Under, any modification and variation, but the scope of patent protection of the embodiment of the present invention can be carried out in the form and details of implementation,
Still it should be subject to the scope of the claims as defined in the appended claims.
Claims (10)
1. a kind of has channeling simulation system, which is characterized in that single including cement mortar unit, air supply unit, heating unit and test
Member；
The cement mortar unit is connected with test cell, and cement mortar unit is used for the cement of test for providing；Air supply unit with
Test cell connects, and air supply unit is used for the preset pressure of test for providing；Test cell is arranged in heating unit, heating
Unit is used for the preset temperature of test for providing；
The test cell includes measuring the has channeling pipe of cement has channeling process and the mistake for measuring cement liquid column hydrostatic pressure
It manages again；Has channeling pipe, weightless pipe are arranged in cartridge heater, and has channeling pipe, weightless pipe are both provided with the ring chamber for accommodating cement
Body, has channeling pipe, weightless pipe bottom end be both provided with pressure detection mechanism；The bottom end of the ring-shaped cavity of has channeling pipe is provided with the first water
Mud input port and first gas input port, top are provided with pressurization detection mouth；The bottom end of the ring-shaped cavity of weightless pipe is provided with
Second cement mortar input port.
2. has channeling simulation system according to claim 1, which is characterized in that
The heating unit includes cartridge heater, and cartridge heater is equipped with for the cavity for accommodating has channeling pipe and weightless pipe and around sky
The heating chamber of chamber setting, heating chamber are provided with the interface for connecting fuel tank pipeline.
3. has channeling simulation system according to claim 2, which is characterized in that
The cement mortar unit include cement mortar tank, for connect the first pipeline of cement mortar tank and the first cement mortar input port and
For connecting the second pipeline of cement mortar tank and the second cement mortar input port.
4. has channeling simulation system according to claim 3, which is characterized in that
The air supply unit includes gas tank, for the third pipeline that connects gas tank and first gas input port and for connecting gas
4th pipeline of tank and gas delivery port.
5. the has channeling simulation system according to Claims 2 or 3 or 4, which is characterized in that
The has channeling pipe, weightlessness Guan Jun include connecting rod and inner sleeve, and connecting rod is set in inner sleeve, and inner sleeve is set on cartridge heater
In, form ring-shaped cavity between the inner wall and connecting rod of inner sleeve.
6. has channeling simulation system according to claim 5, which is characterized in that
The inner sleeve bottom end of the has channeling pipe is connected with first flange end cap, and top is connected with second flange end cap, connecting rod
Both ends extend through first flange end cap and second flange end cap；
The first cement mortar input port and first gas input port are arranged on first flange end cap, and pressurization detection mouth is arranged on
On second flange end cap.
7. has channeling simulation system according to claim 6, which is characterized in that
The inner sleeve bottom end of the weightlessness pipe is provided with third flange end cap, and top is connected with the 4th flange end cap, connecting rod
Both ends extend through third flange end cap and the 4th flange end cap；
The second cement mortar input port is arranged in third flange end cap.
8. has channeling simulation system according to claim 7, which is characterized in that
Pressure detection mechanism is both provided in the first flange end cap and third flange end cap.
9. has channeling simulation system according to claim 6, which is characterized in that
Annular filter screen is additionally provided in the first flange end cap, first gas input port is arranged on annular filter screen away from ring chamber
The side of body, the first cement mortar input port are arranged on annular filter screen towards the side of ring-shaped cavity；
Ring baffle is additionally provided in second flange end cap, ring baffle is arranged on the end of casing, is offered on ring baffle
Venthole.
10. has channeling simulation system according to claim 6, which is characterized in that
The both ends of the connecting rod extend respectively to the outside of first flange end cap, second flange end cap, and the both ends of connecting rod are equal
Clamp nut is connected with, clamp nut is used to first flange end cap, second flange end cap being fixed on connecting rod.
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| CN201711121313.2A CN108169462B (en) | 2017-11-13 | 2017-11-13 | Gas channeling simulation system |
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| CN108169462B CN108169462B (en) | 2021-01-29 |
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