CN108571313A - A kind of down-hole casing deformation simulator and method - Google Patents
A kind of down-hole casing deformation simulator and method Download PDFInfo
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- CN108571313A CN108571313A CN201810505163.3A CN201810505163A CN108571313A CN 108571313 A CN108571313 A CN 108571313A CN 201810505163 A CN201810505163 A CN 201810505163A CN 108571313 A CN108571313 A CN 108571313A
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- casing deformation
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- 238000000034 method Methods 0.000 title claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 95
- 230000008569 process Effects 0.000 claims abstract description 33
- 238000002347 injection Methods 0.000 claims abstract description 25
- 239000007924 injection Substances 0.000 claims abstract description 25
- 239000011888 foil Substances 0.000 claims description 24
- 238000007789 sealing Methods 0.000 claims description 13
- 238000004088 simulation Methods 0.000 claims description 12
- 230000001419 dependent effect Effects 0.000 claims description 7
- 239000011083 cement mortar Substances 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 abstract description 12
- 230000008961 swelling Effects 0.000 abstract description 11
- 238000012544 monitoring process Methods 0.000 abstract description 9
- 238000011084 recovery Methods 0.000 description 8
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- 238000004458 analytical method Methods 0.000 description 3
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- 239000012530 fluid Substances 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/02—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of industrial processes; of machinery
Abstract
A kind of down-hole casing deformation simulator of the application offer and method.Described device includes：Pressure chamber is provided with the shale samples with collar aperture in the Pressure chamber, 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 each embodiment 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 and method.
Background technology
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 undergauge of the borehole wall, broken the problem of collapsing for rock gas well.
Recovery process is opened in shale gas, shale gas-bearing formation well is in fracturing process so that casing after water swelling, creep
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 cause 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, when in the industry can be to shale gas exploitation there is an urgent need for one kind, embodiment party that down-hole casing deformation is studied
Case.
Invention content
The application is designed to provide a kind of down-hole casing deformation simulator and method, realizes under condition of high voltage, page
Rock water swelling, 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, including：
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 by pull rod between orlop plate and the Pressure chamber upper cover.
Further, in another embodiment of described device, between the Pressure chamber bottom plate and the Pressure chamber main body,
It is both provided with sealing ring 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, it is described to answer
Become piece and be also associated with deformeter, the deformeter is used to preserve the dependent variable of the foil gauge.
Further, in another embodiment of described device, the deformeter is also associated 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 mortar is marked between described sleeve pipe and described sleeve pipe hole.
On the other hand, this application provides a kind of methods of down-hole casing deformation simulation, including：
Apply pressure to the shale samples being arranged in Pressure chamber by pressure charging apparatus；
Pass through water injection equipment water filling into the Pressure chamber；
By the way that the strain detecting equipment in internal surface of sleeve pipe is arranged, after detecting the shale samples water suction, to described sleeve pipe
Extruding force causes the deformation of described sleeve pipe, described sleeve pipe to be arranged in the shale samples.
Down-hole casing deformation simulator provided by the present application and method, by being arranged shale samples in Pressure chamber,
And casing is set in shale samples, pressure, analog casing, shale samples are applied to shale samples in loading equipemtn by pressure
Deng state in the actual environment.The water filling into Pressure chamber using water injection equipment expands, extruded sleeve after simulation shale samples water suction
Pipe so that the process of the upper deformation of casing hair.By the strain detecting equipment being arranged on casing, the deformation of casing is detected in real time
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.
Description of the drawings
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 technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments described in application, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, other drawings may also be obtained 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 the application another embodiment；
Fig. 3 is the diagrammatic cross-section of the vertical view of Pressure chamber in the application one embodiment；
Fig. 4 is the flow diagram for the method that down-hole casing deformation is simulated in the application one embodiment.
Specific implementation mode
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, technical solutions in the embodiments of the present 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 every other embodiment that technical staff is obtained without creative efforts should all belong to the application protection
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 makes casing deform upon.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 sleeve 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 arranged, 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 etc. in shale samples 9, 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 mortar can also be injected between collar aperture and casing 10, it can be in cement mortar
It after solidification, will be sealed between casing 10 and collar aperture using fluid sealant, simulate what wellbore casing 10 in oil gas recovery process was cemented the well
Process.The material of casing 10 can select material identical with the casing used in the practical exploitation of oil gas, be covered with accurate simulation
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.By the way that strain detecting equipment is arranged at the inner wall of casing 10, casing 10 can be detected in real time
Deformation quantity.Strain detecting equipment 11 can be uniformly arranged at the inner wall of casing 10, with detect 10 each position of casing 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 measuring strain element.Foil gauge may include resistance strain gage, such as foil resistance foil gauge.Resistance strain gage
Operation principle be to be made based on strain effect, i.e., conductor or semi-conducting 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, one implementation of the application
In example, foil gauge 11 (i.e. strain detecting equipment 11) can connect deformeter 13, and preserving foil gauge 11 by deformeter 13 generates
Dependent variable.Such as：Deformeter 13 can be utilized to measure the resistance variations size of 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 select multiple foil gauges that the inner wall in casing 10 is set as needed,
Preferably to detect the whole deformation quantity of casing 10.
Strain 11 collected data of detection device 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
Analyzing processing is carried out to the deformation quantity data of the casing 10 received, 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 be connected at water filling port, by noting
The water filling into Pressure chamber 15 of wetting system 16, shale samples 9 in Pressure chamber 15 can water swelling, to being arranged in shale samples 9
Casing 10 squeezed so that casing 10 generate deformation.The strain detecting equipment 11 being arranged in casing 10, can detect 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 noted 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.Water injection valve control water injecting pump 12 can be utilized to start or stop to pressure
Pressure sensor is arranged on waterflood-transmission line that can also be between water injecting pump 12 and Pressure chamber 15, with real-time in water filling 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 hydraulic 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 hydraulic pressure data and casing 10 received
Deformation quantity data, influence of the analysis 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.
Make, utilization can utilize data acquisition process equipment 14 to control pressure of the water injecting pump 12 to 15 water filling of Pressure chamber, controlled strain instrument
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 residing for recovery process middle sleeve etc..The water filling into Pressure chamber using water injection equipment, shale samples are inhaled in Pressure chamber
Water expansion and squeezing bushing detect casing by crowded in real time by being arranged in the strain detectings equipment such as foil gauge of internal surface of sleeve pipe
Strain path after pressure.The simulation for realizing down-hole casing deformation, by simulated experiment data, can monitoring sleeve in real time shape
Become situation, analyzes the mechanism of casing deformation, theoretical foundation is provided for constructions such as exploitation, the drilling wells of oil gas.
As shown in Fig. 2, in the application one embodiment, Pressure chamber 15 may include：Pressure chamber main body 1 is arranged described
The Pressure chamber bottom plate 2 of 1 lower face of Pressure chamber main body is arranged in 1 upper surface Pressure chamber upper cover 3 of the Pressure chamber main body, the pressure
It is connected by pull rod 4 between power orlop plate 2 and the Pressure chamber upper cover 3.
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 face 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.The series connection of pull rod 4 may be used between Pressure chamber upper cover 3 and Pressure chamber bottom plate 2, i.e., pull rod 4 can be with one
3 one end connection Pressure chamber bottom plate 2 of end connection Pressure chamber upper cover.As shown in Fig. 2, the both ends of pull rod 4 can also use 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, carry
The leakproofness in high pressure storehouse 15.
Fig. 3 is the diagrammatic cross-section of the vertical 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 it can be with higher metal of selection 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 both 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 both provided with sealing ring 8 between Pressure chamber upper cover 3 and Pressure chamber main body 1.Certainly,
It can also select other sealing structures such as：Gasket etc..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 easy to disassemble, installation, mobile etc., it is simple in structure, be applicable in
Range is wider.Certainly, according to the needs of actual use, the modes such as casting can also be used, 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, because applying pressure to shale samples 9, shale samples 9 being caused to take off out of Pressure chamber 15
It falls.Backing plate at bottom 7 can select the stronger metallic 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, simulate shale residing environment, pressure in the actual environment as far as possible
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, is pushed hydraulic cylinder by high-pressure pump, is 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 pipeline transmission to pressure-loaded plate, pushing pressure-loaded
Push rod on plate is (such as：Hydraulic stem) to shale samples 9 apply pressure.
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 load 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 pressure
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 be analyzed
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, in the application one embodiment, can also be arranged between pressure-loaded plate and water injecting pump 12
Pressure sensor can monitor water injecting pump 12 by pressure sensor and pass through the pressure in pipeline transmission to pressure-loaded plate in real time
Size, improve the accuracy of monitoring data.
Displacement sensor can also be connected on each pressure-loaded plate, each pressure-loaded is detected 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.
Below in conjunction with the accompanying drawings, with regular shale samples 9 (500 × 500 × 500mm) water swelling processed, compacted
Become for the evaluation test method for leading to casing crimp, the embodiment in one example of the application is carried out specifically
It is bright.
It is connect with Pressure chamber 15 as shown in Fig. 2, constant speed and constant pressure pumps 12 (i.e. water injecting pump 12) one end, the other end is acquired with data
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, waits for cement slurry sets, is sealed using fluid 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 connects, and 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, simultaneously cap 5 is standby tight by Pressure chamber bottom plate 2 and 3 both ends of Pressure chamber upper cover by screw thread using pull rod.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 operation principle of the application embodiment：
Shale samples 9 are positioned 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 casing 10 is made to deform upon.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 sleeve 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.The water filling into Pressure chamber using water injection equipment expands, extruded sleeve after simulation shale samples water suction
Pipe so that the process of the upper deformation of casing hair.By the strain detecting equipment being arranged on casing, the deformation of casing is detected in real time
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.
Fig. 4 is the flow diagram for the method that down-hole casing deformation is simulated in the application one embodiment, as shown in figure 4,
A kind of method of down-hole casing deformation simulation is additionally provided in the application one embodiment, including：
S1, pressure is applied to the shale samples being arranged in Pressure chamber by pressure charging apparatus.
Pressure charging apparatus can be pressure-loaded plate, and pressure-loaded plate can be a kind of hydraulic structure, and concrete structure can
With the record with reference to above-described embodiment, details are not described herein again.Pressure-loaded plate can be connected on hydraulic pump, utilize hydraulic pump
Control pressure load plate applies pressure to the shale samples being arranged in Pressure chamber.Certainly, pressure charging apparatus can also be it
His structure can apply pressure to shale samples.Different size can be applied to shale samples with control pressure load plate
Pressure, to study influence of the different pressures to casing deformation.
S2, pass through water injection equipment water filling into the Pressure chamber.
The water filling into Pressure chamber by water injection equipment such as water injecting pump can expand after the shale samples water suction in Pressure chamber, into
One step squeezes the casing being arranged in shale samples so that casing deforms upon.It can be controlled by water injection equipment to Pressure chamber
Speed, pressure of water filling etc., under the conditions of studying different injection speed, water injection pressure, the deformation situation of casing.
S3, by the way that the strain detecting equipment in internal surface of sleeve pipe is arranged, after detecting the shale samples water suction, to described sleeve pipe
Extruding force cause the deformation of described sleeve pipe, described sleeve pipe to be arranged in the shale samples.
After shale samples water swelling, squeezing bushing so that casing deforms upon.The strain detecting being arranged in casing is set
It is standby as foil gauge also can in real time detect casing with deforming upon by the strain detecting equipment for being arranged in internal surface of sleeve pipe
Deformation quantity.
Down-hole casing deformation analogy method provided by the embodiments of the present application can be with using down-hole casing deformation simulator
It realizes 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.Method is simple, 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 action recorded in detail in the claims or step can be come according to different from the sequence in embodiment
It executes and desired result still may be implemented.In addition, the process described in the accompanying drawings not necessarily require show it is specific suitable
Sequence or consecutive order could realize desired result.In some embodiments, multitasking and parallel processing be also can
With or it may be advantageous.
Each embodiment in the application is described in a progressive manner, identical similar part between each embodiment
Just to refer each other, and 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,
But may include more or less operating procedure based on the conventional means either without creativeness.The step of being enumerated in embodiment
Sequence is only a kind of mode in numerous step execution sequences, does not represent and unique executes sequence.Device in practice or
When end product executes, can according to embodiment either method shown in the drawings sequence execute or it is parallel execute it is (such as 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 including the processes of a series of elements, method, product or
Equipment includes not only those elements, but also includes 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 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 for indicating name
Claim, and does not represent any particular order.
Each embodiment in this specification is described in a progressive manner, identical similar portion between each embodiment
Point just to refer 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 description is fairly 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 spirit herein and principle should all include
Within right.
Claims (12)
1. a kind of down-hole casing deformation simulator, which is characterized in that including：
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 both 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
It sets in the lower surface of the inner surface and the Pressure chamber upper cover of 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
It includes：Foil gauge, the foil gauge are also associated with deformeter, and the deformeter is used to preserve 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 associated 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
It is provided with pressure sensor between the water injecting pump.
11. a kind of down-hole casing deformation simulator as described in claim 1, is marked between described sleeve pipe and described sleeve pipe hole
Cement mortar.
12. a kind of down-hole casing deformation simulator using described in claim 1-11 any one carries out down-hole casing deformation
The method of simulation, which is characterized in that including：
Apply pressure to the shale samples being arranged in Pressure chamber by pressure charging apparatus；
Pass through water injection equipment water filling into the Pressure chamber；
By the way that the strain detecting equipment in internal surface of sleeve pipe is arranged, after detecting the shale samples water suction, the extruding to described sleeve pipe
Power causes the deformation of described sleeve pipe, described sleeve pipe to be arranged in the shale samples.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810505163.3A CN108571313B (en) | 2018-05-24 | 2018-05-24 | Underground casing deformation simulation device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810505163.3A CN108571313B (en) | 2018-05-24 | 2018-05-24 | Underground casing deformation simulation device and method |
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| CN108571313B CN108571313B (en) | 2023-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810505163.3A Active CN108571313B (en) | 2018-05-24 | 2018-05-24 | Underground casing deformation simulation device and method |
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| CN109681164A (en) * | 2018-07-30 | 2019-04-26 | 东北石油大学 | A kind of device of simulation set damage process |
| CN111044382A (en) * | 2019-12-30 | 2020-04-21 | 西南石油大学 | Experimental device for hydraulically simulating non-uniform confining pressure of casing and using method |
| CN111141616A (en) * | 2020-01-08 | 2020-05-12 | 东北石油大学 | Experimental device and experimental method for simulating deformation of seam-net modified stratum casing |
| CN111964932A (en) * | 2020-08-14 | 2020-11-20 | 中国矿业大学 | Mine shaft deformation simulation experiment device |
| CN112593921A (en) * | 2020-12-15 | 2021-04-02 | 安徽理工大学 | Method for simulating change of shale gas mining through fault casing |
| CN112782002A (en) * | 2021-03-01 | 2021-05-11 | 西南石油大学 | Metal casing deformation testing device in well cementation cement slurry coagulation waiting process |
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| CN112593921A (en) * | 2020-12-15 | 2021-04-02 | 安徽理工大学 | Method for simulating change of shale gas mining through fault casing |
| CN112782002A (en) * | 2021-03-01 | 2021-05-11 | 西南石油大学 | Metal casing deformation testing device in well cementation cement slurry coagulation waiting process |
| RU2766992C1 (en) * | 2021-03-01 | 2022-03-16 | Саусвест Петролиэм Юниверсити (СВПЮ) | Installation for testing with respect to deformation of metal casing pipe in process of waiting for hardening of cement mortar for well cementing |
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