CN208473837U - A kind of down-hole casing deformation simulator - Google Patents
A kind of down-hole casing deformation simulator Download PDFInfo
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- CN208473837U CN208473837U CN201820778353.8U CN201820778353U CN208473837U CN 208473837 U CN208473837 U CN 208473837U CN 201820778353 U CN201820778353 U CN 201820778353U CN 208473837 U CN208473837 U CN 208473837U
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Abstract
The application provides a kind of down-hole casing deformation simulator.Described device includes: Pressure chamber, and the shale samples with collar aperture are provided in the Pressure chamber, and casing is provided in described sleeve pipe hole, strain detecting equipment is provided at the inner wall of described sleeve pipe；The inner surface of the Pressure chamber is provided with pressure charging apparatus, and the pressure charging apparatus is used to apply pressure to the shale samples；Water filling port is provided in the Pressure chamber, the water filling port is connected with water injection equipment.Using embodiment each in the application, under condition of high voltage, shale water swelling, the monitoring of creep casing deformation process provide accurate data basis for the mechanism study of casing deformation.
Description
Technical field
The application belongs to oilfield drilling technical field more particularly to a kind of down-hole casing deformation simulator.
Background technique
Shale gas is the unconventional resource of China's focus development, and China's shale formation fracture development is larger, underground leakiness, page
There is the easy undergauges of the borehole wall, broken the problem of collapsing for rock gas well.
In opening in recovery process for shale gas, shale gas-bearing formation well makes casing after water swelling, creep in fracturing process
Deformed damaged is serious.Especially in net horizontal section, the integrality of pit shaft is poor after pressure break, and increasingly with the pressure of pressure break
Height, such case is increasingly severe, and eventually leading to entire horizontal segment can not normally exploit, and causes huge economic loss.It is existing
In technology, no special casing deformation physical analog test apparatus and its method disclose shale gas horizontal well large size volume fracturing
Process set becomes mechanism.Therefore, one kind is needed in the industry when can be to shale gas exploitation, the embodiment party that down-hole casing deformation is studied
Case.
Utility model content
The application is designed to provide a kind of down-hole casing deformation simulator, realizes under condition of high voltage, shale water suction
Expansion, the monitoring of creep casing deformation process, provide accurate data basis for the mechanism study of casing deformation.
On the one hand this application provides a kind of down-hole casing deformation simulators, comprising:
Pressure chamber is provided with the shale samples with collar aperture in the Pressure chamber, and described sleeve pipe is provided with casing in hole,
Strain detecting equipment is provided at the inner wall of described sleeve pipe；
The inner surface of the Pressure chamber is provided with pressure charging apparatus, and the pressure charging apparatus is used for the shale sample
Product apply pressure；
Water filling port is provided in the Pressure chamber, the water filling port is connected with water injection equipment.
Further, in another embodiment of described device, the Pressure chamber includes: Pressure chamber main body, is arranged in institute
The Pressure chamber bottom plate in Pressure chamber lower body face is stated, is arranged in Pressure chamber main body upper surface Pressure chamber upper cover, the pressure
It is connected between orlop plate and the Pressure chamber upper cover by pull rod.
Further, in another embodiment of described device, between the Pressure chamber bottom plate and the Pressure chamber main body,
Sealing ring is provided between the Pressure chamber upper cover and the Pressure chamber main body.
Further, in another embodiment of described device, the pressure charging apparatus is arranged in the Pressure chamber master
The lower surface of the inner surface of body and the Pressure chamber upper cover.
Further, in another embodiment of described device, the upper surface of the Pressure chamber bottom plate is provided with bottom pad
Plate.
Further, in another embodiment of described device, the strain detecting equipment includes: foil gauge, described to answer
Become piece and be also connected with deformeter, the deformeter is used to save the dependent variable of the foil gauge.
Further, in another embodiment of described device, the deformeter is also connected with data acquisition process equipment.
Further, in another embodiment of described device, the water injection equipment includes water injecting pump, water injection valve, described
Water injecting pump is connect with the data acquisition process equipment.
Further, in another embodiment of described device, the pressure charging apparatus includes the pressure with push rod
Load plate, the push rod are connect with the water injecting pump.
Further, in another embodiment of described device, it is arranged between the pressure-loaded plate and the water injecting pump
There is pressure sensor.
Further, in another embodiment of described device, cement slurry is marked between described sleeve pipe and described sleeve pipe hole.
Down-hole casing deformation simulator provided by the present application, by being arranged shale samples in Pressure chamber, and in page
Casing is set in rock sample product, pressure is applied to shale samples in loading equipemtn by pressure, analog casing, shale samples etc. are in reality
State in the environment of border.It is filled the water, is expanded after simulation shale samples water suction, squeezing bushing makes into Pressure chamber using water injection equipment
Obtain the process that casing sends out upper deformation.Pass through the strain detecting equipment being arranged on casing, the deformation process of real-time detection casing.It is real
Show under condition of high voltage, shale water swelling, the monitoring of creep casing deformation process, the mechanism study for casing deformation provide
Accurate data basis.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in application, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of down-hole casing deformation simulator one embodiment provided by the present application；
Fig. 2 is the structural schematic diagram of down-hole casing deformation simulator in another embodiment of the application；
Fig. 3 is the diagrammatic cross-section of the top view of Pressure chamber in the application one embodiment.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in example is applied, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described implementation
Example is merely a part but not all of the embodiments of the present application.Based on the embodiment in the application, this field is common
The application protection all should belong in technical staff's every other embodiment obtained without creative efforts
Range.
Drilling well mined out of pit shaft, drilling well by the oil gas in subsurface reservoir can be passed through in the recovery process of oil gas
Cheng Zhong needs the equipment by oil/gas wells such as casings to be lowered into the pit shaft being drilled, and the surrounding of casing is surrounded by shale.In oil
In the exploration of gas, recovery process, it may be necessary to hydraulic fracturing, to improve the permeability of reservoir, improve the production efficiency of oil gas with
And output capacity etc..During pressure break, the shale meeting water swelling squeezing bushing of casing surrounding, making casing, deformation occurs.With
Increasing for frac pressure, the deformation of casing is increasingly severe, and may result in oil/gas well can not normally exploit.
The embodiment of the present application provides a kind of down-hole casing deformation simulator, using under the unit simulation hyperbaric environment,
Shale water swelling, and casing is squeezed, the process of casing deformation.Casing deformation is examined using strain detecting equipment
It surveys, the case where with real-time monitoring casing deformation, provides fundamental basis for the research of down-hole casing deformation.
Specifically, Fig. 1 is the structural schematic diagram of down-hole casing deformation simulator one embodiment provided by the present application, this
Apply for that the down-hole casing deformation simulator provided includes:
Pressure chamber 15 is provided with the shale samples 9 with collar aperture in the Pressure chamber 15, and described sleeve pipe is provided in hole
Casing 10 is provided with strain detecting equipment 11 at the inner wall of described sleeve pipe 10；
The inner surface of the Pressure chamber 15 is provided with pressure charging apparatus 6, and the pressure charging apparatus 6 is used for the page
Rock sample product 9 apply pressure；
Water filling port is provided in the Pressure chamber 15, the water filling port is connected with water injection equipment 16.
As shown in Figure 1, a closed Pressure chamber 15 can be set, shale samples 9 are set in Pressure chamber 15, in shale
A collar aperture is bored in sample 9, collar aperture can simulate the pit shaft during the practical exploitation of oil gas.Size, the depth of collar aperture
Degree and the position in shale samples 9 etc., can be configured, the embodiment of the present application does not limit specifically according to actual needs
It is fixed.Casing 10 is placed in collar aperture, 10 surrounding of casing is surrounded by shale samples, is simulated in oil gas recovery process, 10 institute of casing
The environment at place.
In the application one embodiment, cement slurry can also be injected between collar aperture and casing 10, it can be in cement slurry
It after solidification, will be sealed between casing 10 and collar aperture using sealant, simulate what wellbore casing 10 in oil gas recovery process was cemented the well
Process.The material of casing 10 can choose material identical with casing used in the practical exploitation of oil gas, with accurate simulation set
The process of tubular change.Pressure chamber 15, casing 10 etc. can accurately simulate the actual building rings such as oil gas recovery process middle sleeve
Border, so that casing deformation testing result is more accurate.
Strain detecting equipment 11 can be set at the inner wall of casing 10, such as: strain transducer, foil gauge etc. can be examined
The equipment for surveying 10 deformation of casing.It, can be with real-time detection casing 10 by the way that strain detecting equipment is arranged at the inner wall of casing 10
Deformation quantity.Strain detecting equipment 11 can be uniformly arranged at the inner wall of casing 10, with detect each position of casing 10 by
Stress and the deformation generated.
In the application one embodiment, strain detecting equipment 11 may include foil gauge, and foil gauge may include sensitive grid
Etc. compositions be used for measure strain element.Foil gauge may include resistance strain gage, such as foil resistance foil gauge.Resistance strain gage
Working principle be to be made based on strain effect, i.e., conductor or semiconductor material generate mechanically deform under the action of external force
When, resistance value changes accordingly.The deformation quantity of casing 10 can be determined by the resistance variations of foil gauge.Fig. 2 is
The structural schematic diagram of down-hole casing deformation simulator in another embodiment of the application, as shown in Fig. 2, the application one implementation
In example, foil gauge 11 (i.e. strain detecting equipment 11) can connect deformeter 13, saves foil gauge 11 by deformeter 13 and generates
Dependent variable.Such as: it can use the resistance variations size that deformeter 13 measures foil gauge 11, by the resistance variations of foil gauge 11
Be converted to the dependent variable of measuring point.The dependent variable of foil gauge 11 can reflect the dependent variable of casing 10, and foil gauge is in 10 inner wall of casing
Specific location can be set according to actual needs, can according to need the inner wall for selecting multiple foil gauges that casing 10 is set,
Preferably to detect the whole deformation quantity of casing 10.
The strain collected data of detection device 11 can be analyzed, the process of 10 deformation of casing be obtained, for grinding
The mechanism for studying carefully down-hole casing deformation, provides fundamental basis for oil-gas mining.It, can be by deformeter 13 in the application one embodiment
It is connected in data acquisition process equipment 14, data acquisition process equipment 14 can be computer, processor, PLC
The equipment that (Programmable Logic Controller, programmable logic controller (PLC)) etc. has data-handling capacity.Strain
The deformation quantity of collected casing 10 can be sent in data acquisition process equipment 14 by instrument 13, data acquisition process equipment 14
The deformation quantity data of the casing 10 received are analyzed and processed, to study the Deformation Mechanisms of casing 10.
As shown in Figure 1, water filling port can also be arranged in Pressure chamber 15, water injection equipment 16 can connect at water filling port, by infusing
Wetting system 16 is filled the water into Pressure chamber 15, the meeting water swelling of shale samples 9 in Pressure chamber 15, to setting in shale samples 9
Casing 10 squeezed so that casing 10 generate deformation.The strain detecting equipment 11 being arranged in casing 10, can detecte set
The deformation quantity of pipe 10 completes the simulation process of down-hole casing deformation.
As shown in Fig. 2, water injection equipment 16 may include water injecting pump 12, the equipment such as water injection valve are infused clear water using water injecting pump
Enter in Pressure chamber 15, water injecting pump 12 can be constant speed and constant pressure pump.According to actual needs, the pressure of water injecting pump 12 can also be adjusted,
Study influence etc. of the different injection pressure to 10 deformation of casing.It can use water injection valve control water injecting pump 12 to start or stop to pressure
Water filling, can also be arranged pressure sensor on the waterflood-transmission line between water injecting pump 12 and Pressure chamber 15, with real-time in power storehouse 15
Detection water injecting pump 12 inputs the pressure size of water into Pressure chamber 12, facilitates water filling pressure of the control water injecting pump 12 into Pressure chamber 12
Power.
In addition, water injecting pump 12 can be connect with data acquisition process equipment 14, by the water pressure data in injection pressure storehouse 15
It is sent to data acquisition process equipment 14.Data acquisition process equipment 14 can be according to the water pressure data and casing 10 received
Deformation quantity data, analyze influence of the water injection pressure to 10 deformation quantity of casing, the analysis for 10 Deformation Mechanisms of casing provides theory
Data.
Data acquisition process equipment 14 can also store computer program, to control the work of water injecting pump 12, deformeter 13 etc.
Making, controlling the pressure that water injecting pump 12 is filled the water to Pressure chamber 15, controlled strain instrument using can use data acquisition process equipment 14
The frequency etc. of 13 acquisition 1 deformation of casing.
Down-hole casing deformation simulator provided by the embodiments of the present application is simulated using Pressure chamber, shale samples etc. in oil
The actual working environment of gas recovery process middle sleeve, and apply confining pressure to shale samples using pressure charging apparatus, simulation is true
Hyperbaric environment locating for recovery process middle sleeve etc..It is filled the water using water injection equipment into Pressure chamber, shale samples are inhaled in Pressure chamber
Water expansion and squeezing bushing, by strain detectings equipment such as foil gauges that internal surface of sleeve pipe is arranged in, real-time detection casing is by squeezing
Strain path after pressure.The shape of casing can be monitored in real time by simulated experiment data in the simulation for realizing down-hole casing deformation
Become situation, analyzes the mechanism of casing deformation, provide theoretical basis for constructions such as exploitation, the drilling wells of oil gas.
As shown in Fig. 2, Pressure chamber 15 may include: Pressure chamber main body 1 in the application one embodiment, it is arranged described
The Pressure chamber bottom plate 2 of 1 lower end surface of Pressure chamber main body is arranged in the 1 upper surface Pressure chamber upper cover 3 of Pressure chamber main body, the pressure
It is connected between power orlop plate 2 and the Pressure chamber upper cover 3 by pull rod 4.
As shown in Fig. 2, the upper surface of Pressure chamber main body 1 can be tightly connected with Pressure chamber upper cover 3, Pressure chamber main body 1
Lower end surface can be tightly connected with Pressure chamber bottom plate 2, and Pressure chamber main body 1, Pressure chamber bottom plate 2, Pressure chamber upper cover 3 collectively constitute close
Close the Pressure chamber 15 in space.It can be connected using pull rod 4 between Pressure chamber upper cover 3 and Pressure chamber bottom plate 2, i.e., pull rod 4 can be with one
End connection 3 one end of Pressure chamber upper cover connects Pressure chamber bottom plate 2.As shown in Fig. 2, the both ends of pull rod 4 can also be using pull rod and cap 5
It is by screw thread that Pressure chamber upper cover 3 and 2 both ends of Pressure chamber bottom plate is standby tight, with fixation pressure storehouse upper cover 3 and Pressure chamber bottom plate 2, mention
The leakproofness in high pressure storehouse 15.
Fig. 3 is the diagrammatic cross-section of the top view of Pressure chamber in the application one embodiment, as shown in figure 3, the number of pull rod 4
Amount can be configured according to actual needs, and the embodiment of the present application is not especially limited.Such as: multiple pull rods 4, pull rod can be set
4 can be symmetrically arranged, and Pressure chamber upper cover 3 and Pressure chamber bottom plate 2 are connected and fixed, to increase the stability of structure.
The material of Pressure chamber main body 1, Pressure chamber upper cover 3, Pressure chamber bottom plate 2 etc., can be selected according to actual needs,
Such as can choose the higher metal of intensity etc..
In addition, as shown in Fig. 2, in the application one embodiment, between Pressure chamber bottom plate 2 and Pressure chamber main body 1, Pressure chamber
Sealing ring 8 is provided between upper cover 3 and Pressure chamber main body 1.It as needed, can also be only in Pressure chamber bottom plate 2 and Pressure chamber
Sealing ring is set between main body 1, or is only provided with sealing ring 8 between Pressure chamber upper cover 3 and Pressure chamber main body 1.Certainly,
Also other sealing structures be can choose such as: gasket.By the way that sealing ring 8 is arranged, the leakproofness of Pressure chamber 15 can be improved.
The structure of Pressure chamber provided by the embodiments of the present application can be convenient disassembly, installation, movement etc., and structure is simple, be applicable in
Range is wider.Certainly, according to the needs of actual use, can also using modes such as castings, by Pressure chamber be set as one it is whole
Body structure, to increase the leakproofness of Pressure chamber, still, such structure may be inconvenient to move, for the simulation of casing deformation
Work may bring some inconvenience.
In the application one embodiment, backing plate at bottom 7, backing plate at bottom 7 can also be set in the upper surface of Pressure chamber bottom plate 2
It can be used for carrying shale samples 9, avoid causing shale samples 9 to take off out of Pressure chamber 15 because applying pressure to shale samples 9
It falls.Backing plate at bottom 7 can choose the stronger metal plate of bearing capacity, and the size of backing plate at bottom 7 can be with the cross of shale samples 9
Section is identical, or larger than the cross section of shale samples 9, so as to carry shale samples 9 completely.
As shown in Figures 2 and 3, in the application one embodiment, such as pressure-loaded plate of pressure charging apparatus 6 can be set
Set the lower surface of the inner surface and Pressure chamber upper cover 3 in Pressure chamber main body 1.It can make the shale in Pressure chamber 15 in this way
Sample 9 can be under pressure in tri- directions X, Y, Z, as far as possible simulation shale locating environment, pressure in the actual environment
Deng so that the analysis of casing deformation quantity is more accurate.
In the application one embodiment, pressure charging apparatus 6 (such as pressure-loaded plate) can be hydraulic cylinder combination at one
Hydraulic cylinder can be connect by the loading equipemtn on panel with high-pressure pump, pushed hydraulic cylinder by high-pressure pump, further pushed panel
Apply pressure to shale samples.As shown in Fig. 2, pressure charging apparatus 6 (such as pressure-loaded plate) can be connect with water injecting pump 12, lead to
Water injecting pump 12 (such as constant speed and constant pressure pump) pressurization is crossed by highly pressurised liquid by pushing pressure-loaded in pipeline transmission to pressure-loaded plate
Push rod (such as: hydraulic stem) on plate applies pressure to shale samples 9.
As shown in Fig. 2, water injecting pump 12 can be connect with the pressure charging apparatus 6 of all directions in Pressure chamber 15, respectively
X axis loading unit, Y-axis loading unit, Z axis are constituted to loading unit, applies pressure from three directions to core sample 9.
Can be by the pressure size of control water injecting pump 12, the pressure that control pressure-loaded plate applies shale samples 9 is big
It is small.And the size that the pressure that water injecting pump 12 applies can be recorded by data acquisition process equipment 14, further records out and presses
The size for the pressure that power load plate applies to shale samples 9.In conjunction with the dependent variable of the casing 10 of record, casing 10 can analyze out
Deformation quantity and apply the relationship between stressed size, provide fundamental basis for the mechanism study of casing deformation.
In addition, as shown in Fig. 2, can also be arranged between pressure-loaded plate and water injecting pump 12 in the application one embodiment
Pressure sensor can be monitored in real time water injecting pump 12 by pressure sensor and pass through the pressure in pipeline transmission to pressure-loaded plate
Size, improve the accuracy of monitoring data.
Displacement sensor can also be connected on each pressure-loaded plate, detect each pressure-loaded using displacement sensor
The displacement of plate determines the size for the pressure that pressure-loaded plate applies to shale samples by the displacement of pressure-loaded plate, with
Just the relationship between shale samples stress size and casing deformation is analyzed.
It should be noted that the down-hole casing deformation simulator in the embodiment of the present application can also include other structures:
Such as protective shell, support construction, the embodiment of the present application are not especially limited.
With reference to the accompanying drawing, with regular shale samples 9 (500 × 500 × 500mm) water swelling processed, compacted
Become for the evaluation test method for causing casing to be squeezed and deformed, the embodiment in one example of the application is carried out specifically
It is bright.
It is connect as shown in Fig. 2, constant speed and constant pressure pumps 12 (i.e. water injecting pump 12) one end with Pressure chamber 15, the other end and data acquire
Processing equipment 14 connects.An internal diameter Φ 72mm is bored on shale samples 9, the collar aperture of deep 400mm injects water into collar aperture
It is put into casing 10 after mud, to cement slurry sets, is sealed using sealant.Shale samples 9 are placed in Pressure chamber 15.In casing
Built-in foil gauge 11 is uniformly placed on 10 inner walls, 13 one end of deformeter is connect with foil gauge 11, at the other end and data acquisition
Equipment 14 is managed to connect.
As shown in Fig. 2, Pressure chamber 15, mainly by Pressure chamber main body 1, Pressure chamber bottom plate 2, Pressure chamber upper cover 3, pull rod 4, drawing
Bar and cap 5, pressure-loaded plate 6 (pressure charging apparatus 6), backing plate at bottom 7, sealing ring 8 form.1 one end of Pressure chamber main body and pressure
2 end face seal of power orlop plate connection, one end is connect with 3 end face seal of Pressure chamber upper cover.Pressure chamber bottom plate 2 and Pressure chamber upper cover 3
There is sealing structure, forms the space of sealing by sealing ring 8 and Pressure chamber main body 1.Pressure chamber bottom plate 2 and Pressure chamber upper cover 3 are logical
The series connection of pull rod 4 is crossed, using pull rod and cap 5 is standby tight by Pressure chamber bottom plate 2 and 3 both ends of Pressure chamber upper cover by screw thread.Pressure chamber master
There is pressure-loaded plate 6 in the lower surface of 1 inner surface of body and Pressure chamber upper cover 3, applies confining pressure about 50MPa, simulation ground for shale samples 9
Stress.There is backing plate at bottom 7 in the upper surface of Pressure chamber bottom plate 2, for carrying shale samples 9.
Sketch the working principle of the application embodiment:
Shale samples 9 are placed in Pressure chamber 15, Pressure chamber bottom plate 2 and Pressure chamber upper cover 3 pass through sealing mechanism and pressure
Power storehouse main body 1 forms the space of sealing.Apply confining pressure to shale samples by pressure-loaded plate 6, clear water is passed through into constant speed and constant pressure
Pump 12 is injected into the space of shale samples 9 and Pressure chamber 15.It is mutually crowded that the water suction of shale samples 9 causes shale particle to expand
Pressure, active force squeeze casing 10, and making casing 10, deformation occurs.It will by the built-in foil gauge 11 of 10 inner wall of casing
Collected data information sends deformeter 13 to, and the strain information of collected casing 10 is sent to data and adopted by deformeter 13
Collect processing equipment 14, passes through the deformation situation of 14 real-time monitoring casing 10 of data acquisition process equipment.
Down-hole casing deformation simulator provided by the embodiments of the present application, by being arranged shale samples in Pressure chamber,
And casing is set in shale samples, pressure, analog casing, shale samples etc. are applied to shale samples by pressure charging apparatus
State in the actual environment.It is filled the water, is expanded after simulation shale samples water suction, extruded sleeve into Pressure chamber using water injection equipment
Pipe, so that casing sends out the process of upper deformation.Pass through the strain detecting equipment being arranged on casing, the deformation of real-time detection casing
Journey.It realizes under condition of high voltage, shale water swelling, the monitoring of creep casing deformation process, is the mechanism study of casing deformation
Provide accurate data basis.
The specifically used of down-hole casing deformation simulator in above-described embodiment is additionally provided in the application one embodiment
Process, comprising:
Firstly, applying pressure to the shale samples being arranged in Pressure chamber by pressure charging apparatus.Pressure charging apparatus
It can be pressure-loaded plate, pressure-loaded plate can be a kind of hydraulic structure, and specific structure can refer to the note of above-described embodiment
It carries, details are not described herein again.Pressure-loaded plate can be connected on hydraulic pump, using hydraulic pump control pressure-loaded plate to setting
Shale samples in Pressure chamber apply pressure.Certainly, pressure charging apparatus is also possible to other structures, can be to shale samples
Apply pressure.Pressure-loaded plate can also be controlled and apply different size of pressure to shale samples, to study different pressures
Influence to casing deformation.
Secondly, being filled the water by water injection equipment into the Pressure chamber.It is infused by water injection equipment such as water injecting pump into Pressure chamber
Water can expand after the shale samples water suction in Pressure chamber, be pressed further by the casing being arranged in shale samples, so that casing
Deformation occurs.Speed, the pressure etc. filled the water to Pressure chamber can be controlled, by water injection equipment to study different injection speed, note
Under the conditions of water pressure, the deformation situation of casing.
Finally, by the strain detecting equipment that internal surface of sleeve pipe is arranged in, after detecting the shale samples water suction, to the set
The extruding force of pipe causes the deformation of described sleeve pipe, and described sleeve pipe is arranged in the shale samples.After shale samples water swelling,
Squeezing bushing, so that deformation occurs for casing.Be arranged in strain detecting equipment such as foil gauge in casing also can as deformation occurs,
Strain detecting equipment by the way that internal surface of sleeve pipe is arranged in can go out the deformation quantity of casing with real-time detection.
The embodiment of the present application may be implemented under condition of high voltage using down-hole casing deformation simulator, and shale water suction is swollen
Swollen, creep casing deformation process monitoring, provides accurate data basis for the mechanism study of casing deformation.Method is simple,
It is easy to operate.
It should be noted that method described above can be with according to the description of down-hole casing deformation simulator embodiment
Including other embodiments, concrete implementation mode is referred to retouching for related down-hole casing deformation simulator embodiment
It states, does not repeat one by one herein.
It is above-mentioned that this specification specific embodiment is described.Other embodiments are in the scope of the appended claims
It is interior.In some cases, the movement recorded in detail in the claims or step can be come according to the sequence being different from embodiment
It executes and desired result still may be implemented.In addition, process depicted in the drawing not necessarily require show it is specific suitable
Sequence or consecutive order are just able to achieve desired result.In some embodiments, multitasking and parallel processing be also can
With or may be advantageous.
Various embodiments are described in a progressive manner in the application, same and similar part between each embodiment
It may refer to each other, each embodiment focuses on the differences from other embodiments.
Although this specification one or more embodiment provides the method operating procedure as described in embodiment or flow chart,
It but may include more or less operating procedure based on conventional or without creativeness means.The step of being enumerated in embodiment
Sequence is only one of numerous step execution sequence mode, does not represent and unique executes sequence.Device in practice or
When end product executes, can be executed according to embodiment or the execution of method shown in the drawings sequence or parallel (such as it is parallel
The environment of processor or multiple threads, even distributed data processing environment).The terms "include", "comprise" or its
Any other variant is intended to non-exclusive inclusion so that include the process, methods of a series of elements, product or
Equipment not only includes those elements, but also including other elements that are not explicitly listed, or further include for this process,
Method, product or the intrinsic element of equipment.In the absence of more restrictions, being not precluded is including the element
There is also other identical or equivalent elements in process, method, product or equipment.The first, the second equal words are used to indicate name
Claim, and does not indicate any particular order.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for system reality
For applying example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to embodiment of the method
Part explanation.In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ",
The description of " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, structure, material
Or feature is contained at least one embodiment or example of this specification.In the present specification, to the signal of above-mentioned term
Property statement be necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described
It may be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this
The technical staff in field can be by the spy of different embodiments or examples described in this specification and different embodiments or examples
Sign is combined.
The foregoing is merely the embodiments of this specification one or more embodiment, are not limited to book explanation
Book one or more embodiment.To those skilled in the art, this specification one or more embodiment can have various
Change and variation.All any modification, equivalent replacement, improvement and so within the spirit and principles of the present application should all include
Within scope of the claims.
Claims (11)
1. a kind of down-hole casing deformation simulator characterized by comprising
Pressure chamber is provided with the shale samples with collar aperture in the Pressure chamber, casing is provided in described sleeve pipe hole, described
Strain detecting equipment is provided at the inner wall of casing；
The inner surface of the Pressure chamber is provided with pressure charging apparatus, and the pressure charging apparatus to the shale samples for applying
Plus-pressure；
Water filling port is provided in the Pressure chamber, the water filling port is connected with water injection equipment.
2. a kind of down-hole casing deformation simulator as described in claim 1, which is characterized in that the Pressure chamber includes: pressure
The Pressure chamber bottom plate in Pressure chamber lower body face is arranged in power storehouse main body, is arranged in Pressure chamber main body upper end face pressure
Power storehouse upper cover is connected between the Pressure chamber bottom plate and the Pressure chamber upper cover by pull rod.
3. a kind of down-hole casing deformation simulator as claimed in claim 2, which is characterized in that the Pressure chamber bottom plate and institute
It states between Pressure chamber main body, be provided with sealing ring between the Pressure chamber upper cover and the Pressure chamber main body.
4. a kind of down-hole casing deformation simulator as claimed in claim 2, which is characterized in that the pressure charging apparatus is set
Set the lower surface of the inner surface and the Pressure chamber upper cover in the Pressure chamber main body.
5. a kind of down-hole casing deformation simulator as claimed in claim 2, which is characterized in that the Pressure chamber bottom plate it is upper
Surface is provided with backing plate at bottom.
6. a kind of down-hole casing deformation simulator as described in claim 1, which is characterized in that the strain detecting equipment packet
Include: foil gauge, the foil gauge are also connected with deformeter, and the deformeter is used to save the dependent variable of the foil gauge.
7. a kind of down-hole casing deformation simulator as claimed in claim 6, which is characterized in that the deformeter is also connected with
Data acquisition process equipment.
8. a kind of down-hole casing deformation simulator as claimed in claim 7, which is characterized in that the water injection equipment includes note
Water pump, water injection valve, the water injecting pump are connect with the data acquisition process equipment.
9. a kind of down-hole casing deformation simulator as claimed in claim 8, which is characterized in that the pressure charging apparatus packet
The pressure-loaded plate with push rod is included, the push rod is connect with the water injecting pump.
10. a kind of down-hole casing deformation simulator as claimed in claim 9, which is characterized in that the pressure-loaded plate with
Pressure sensor is provided between the water injecting pump.
11. a kind of down-hole casing deformation simulator as described in claim 1, which is characterized in that described sleeve pipe and the set
Cement slurry is marked between pore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820778353.8U CN208473837U (en) | 2018-05-24 | 2018-05-24 | A kind of down-hole casing deformation simulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820778353.8U CN208473837U (en) | 2018-05-24 | 2018-05-24 | A kind of down-hole casing deformation simulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208473837U true CN208473837U (en) | 2019-02-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108571313A (en) * | 2018-05-24 | 2018-09-25 | 中国石油天然气集团有限公司 | A kind of down-hole casing deformation simulator and method |
| CN110261234A (en) * | 2019-07-05 | 2019-09-20 | 山东科技大学 | Crack rock absciss layer support with bolting simulation test device and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108571313A (en) * | 2018-05-24 | 2018-09-25 | 中国石油天然气集团有限公司 | A kind of down-hole casing deformation simulator and method |
| CN108571313B (en) * | 2018-05-24 | 2023-10-31 | 中国石油天然气集团有限公司 | Underground casing deformation simulation device and method |
| CN110261234A (en) * | 2019-07-05 | 2019-09-20 | 山东科技大学 | Crack rock absciss layer support with bolting simulation test device and method |
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