CN105134197B - Reservoir pressure change induces the analogue experiment installation and its experimental method of interlayer slip - Google Patents
Reservoir pressure change induces the analogue experiment installation and its experimental method of interlayer slip Download PDFInfo
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- CN105134197B CN105134197B CN201510577527.5A CN201510577527A CN105134197B CN 105134197 B CN105134197 B CN 105134197B CN 201510577527 A CN201510577527 A CN 201510577527A CN 105134197 B CN105134197 B CN 105134197B
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Abstract
Change the analogue experiment installation and its experimental method for inducing interlayer slip the present invention relates to reservoir pressure, two side walls that reservoir pressure change therein induces the frame of the analogue experiment installation of interlayer slip are respectively arranged with hydraulic stem, top pressure assembly and bottom pressure assembly are connected with the hydraulic stem of both sides respectively, and the pressure head and the pressure head of bottom pressure assembly of top pressure assembly are correspondingly arranged；Composition is mounted side by side by more pressure devices in top pressure assembly and bottom pressure assembly, pressure device includes first support, oil cylinder, second support, pressure head, the both ends of first support are installed by guide rod respectively, pressure head is fixed in guide rod lower end, oil cylinder is arranged in first support, and positioned at the centre of two guide rods, second support upper end is connected with cylinder piston rod, lower end is connected with pressure head, and pressure sensor is installed at the both ends of second support respectively.The present invention can study Daqing oil field contour horizon by formation slippage induces the rule of sleeve pipe damage.
Description
Technical field
Simulated the present invention relates to one kind and measure the unbalanced caused tender two sections of bottom levels of Daqing oilfield reservoir pressure and broken
The experimental provision and experimental method of face Relative sliding, and in particular to reservoir pressure change induces the analogue experiment installation of interlayer slip
And its experimental method.
Background technology
In Daqing oil field recovery process, there is larger pressure gap in the petroleum reservoir between adjacent area so that tender two sections of ground
Area bottom index bed section produces the relative slip of large area, causes a large amount of Casing Failures that shearing bad breaks occur.Sleeve pipe is once sent out
It is raw damaged, not only destroy original well-pattern system, cause the oil gas underproduction, and follow-up well workover and mend the cost of drilling new well compared with
Height, huge economic loss can be caused to oil field.
Cause Daqing oil field that sleeve pipe damage occurs in contour horizon is mainly due to formation slippage, its reason：Oil field is long-term
Waterflooding extraction causes reservoir pressure uneven, therefore pressure gap between adjacent area be present, in the presence of pressure difference, reservoir hair
Raw heterogeneous deformation, reservoir deformation cause all stratum on reservoir top to deform.More than Daqing oilfield reservoir 60 ~ 80m positions
The contour horizon of tender two sections of bottoms is set to, index bed thickness is about 10m, and composition contains multilayer paleontological fossil in its rock, by
Cause the increase of calcium content rich in fossil in mud stone, shearing strength is less than other positions, constitutes level weak plane.
Present various test is formed it has proven convenient that extensive damage has occurred in the horizontal plane of weakness in some areas contour horizon
Large area horizontal section.And then reservoir produces Axinlly nonuniform deformation under differential pressure action, trigger horizontal section stratum hair up and down
Raw Relative sliding, active force caused by formation slippage are directly acted in Casing Failure, when sliding degree exceedes sleeve pipe institute energy
After the strength degree born, sleeve pipe is damaged.Nearly 5 years, the well number of Daqing oil field contour horizon sleeve pipe damage accounted for grand celebration set
The half of pipe damage sum, accounts for the 20% of total drilling well number, has had a strong impact on the normal exploitation in oil field.But at present about rock
Layer deformation of bottom causes the rule of rock stratum Relative sliding above and below interlayer horizontal section unclear, interlayer slip experimental method and reality
Equipment is tested not yet to be formed.
Daqing oil field index bed Casing Failure Mechanism is different from conventional Casing Failure Mechanism, and related experiment equipment can not be ground
Daqing oil field contour horizon is studied carefully by formation slippage induces the rule of sleeve pipe damage.The power of conventional interlayer slip experimental facilities
Source direction is identical with glide direction, and the Impact direction of Daqing oil field index bed sleeve pipe damage is vertical with glide direction.Therefore, grind
Studying carefully a kind of related experimental methods suitable in terms of Daqing oil field index bed sleeve pipe damage and equipment has important application value.
The content of the invention
Change the analogue experiment installation for inducing interlayer slip it is an object of the present invention to provide reservoir pressure, it is used to grind
Daqing oil field contour horizon is studied carefully by formation slippage induces the rule of sleeve pipe damage, and it is a further object to provide this
Kind reservoir pressure change induces the experimental method of the analogue experiment installation of interlayer slip.
The technical solution adopted for the present invention to solve the technical problems is：This reservoir pressure change induces interlayer slip
Analogue experiment installation includes frame, top pressure assembly, bottom pressure assembly, and top pressure assembly, bottom pressure assembly are pacified
In frame, there is left and right two side walls on the base of frame, two side walls of frame are respectively arranged with hydraulic stem, top
Pressure assembly and bottom pressure assembly are connected with the hydraulic stem of both sides respectively, pressure head and the bottom pressure assembly of top pressure assembly
Pressure head be correspondingly arranged；Composition is mounted side by side by more pressure devices in top pressure assembly and bottom pressure assembly, and the two
Pressure device quantity is identical, and pressure device includes first support, oil cylinder, second support, pressure head, and the both ends of first support are fixed respectively to pacify
Guide rod is filled, pressure head is fixed in guide rod lower end, and oil cylinder is arranged in first support, positioned at the centre of two guide rods, oil cylinder
Piston rod is stretched out from first support, and second support upper end is connected with piston rod, and second support lower end is connected with pressure head, second support
Both ends pressure sensor is installed respectively.
Hydraulic stem is controlled by computer in such scheme, realizes the control to hydraulic stem.
Pressure head is fixed together by metallic plate and block rubber and formed in such scheme, two guide rods, second supports with
Metallic plate is fixedly connected, and the thickness of block rubber is 10cm, and block rubber can ensure that the pressure that pressure device applies is uniform.
The both ends of first support have support arm in such scheme, and guide rod is arranged in first support by support arm.
Such scheme middle and upper part pressure assembly and bottom pressure assembly are each provided with 10 pressure devices.
Above-mentioned reservoir pressure change induces the method that the analogue experiment installation of interlayer slip carries out pressurizing and deformation experiment：
First, the selection of laboratory sample：
Two simulation materials similar to research sleeve pipe damaged layer position rock of selection, determine the dimensioning of laboratory sample
Very little, the upper strata laboratory sample of selection and lower floor's laboratory sample is upper and lower is stacked together；
The 2nd, auxiliary equipment sliding measurer is installed：
The sliding measurer and measuring point that are used cooperatively with the present invention are connected, slide the first rotating shaft of measurer
It is connected with bottom before the laboratory sample of upper strata, slides the second rotating shaft of measurer and top phase before lower floor laboratory sample
Even, sliding measurer accommodated side-by-side is multiple；
3rd, laboratory sample pressurizing and deformation is tested：
By the elongation of computer controlled machine frame both sides hydraulic stem, adjust between top pressure assembly and bottom pressure assembly
Distance, the upper strata laboratory sample and lower floor's laboratory sample stacked, pass through the pressure head and bottom pressure group of top pressure assembly
The pressure head of part compresses, and completes the fixation work of laboratory sample；
4th, pressure deformation is carried out to laboratory sample, measures the relative slippage of interlayer：
By adjusting the oil cylinder of pressure device in the pressure assembly of top, regulating piston bar band dynamic head moves downward, to upper strata
Laboratory sample is pressurizeed, and the oil cylinder of pressure device in the pressure assembly of bottom is then controlled, by the piston for controlling each pressure device
Bar elongation is different so that lift deforms in lower floor's laboratory sample generation, drive upper strata sample after lift deforms in lower floor's sample generation
Deform upon, so as to be slid between two layers of laboratory sample；Sliding measurer measures cunning of the laboratory sample in diverse location
Shifting amount, while by sliding the counting scale of measurer, in the whole experiment of record in real time, different distortion degree occurs for laboratory sample
When slippage size.
The invention has the advantages that：
1st, to be directed to Daqing oil field different blocks, the different depth index bed plane of disruption changes the present invention due to reservoir pressure
Induce the analogue experiment method of sliding, the stressing conditions of the upper and lower rock stratum in mock standard layer position and the water for simulating contour horizon
Flat plane of weakness and measures the slippage of interlayer because Relative sliding occurs for fracture, so as to study Daqing oil field contour horizon due to
Formation slippage induces the rule of sleeve pipe damage.
2nd, each pressure device of pressure assembly can work independently in the present invention, the both ends of laboratory sample with apart from both ends
Nearest upper and lower pressure head is compressed, and experimental implementation operation is stated after the completion of continuing after compression laboratory sample.Therefore it is real by changing
The thickness combination of specimen material and laboratory sample is tested, different depth, the rock stratum of different blocks can be simulated.
3rd, the present invention is in upper and lower pressure assembly course of exerting pressure, in order to prevent the excessive pressure head of pressure from shifting, first
The both sides of support are installed by two guide rods；In order to prevent the pressure that pressure device applies uneven, connected on the metallic plate of pressure head
One piece of block rubber, ensure that the pressure that pressure device applies is uniform.
4th, the present invention is by with the use of sliding measuring appliance, in an experiment, while laying multiple sliding measurers, measuring
Go out slippage of the laboratory sample in diverse location, while by sliding the counting scale of measurer, whole experiment can be recorded in real time
In, slippage size during different distortion degree occurs for sample.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the structural representation of the pressure device of the present invention；
Fig. 3 is the structural representation for the sliding measurer measurement sample that the present invention is used cooperatively；
Fig. 4 is the structural representation of the present invention and sliding measurer binding test sample.
In figure：1. the piston of 6. oil cylinder of frame 2. top pressure assembly, 3. bottom pressure assembly, 4. base, 5. side wall 7.
On the pressure sensor 15 of 13 second support of bar 8. guide rod, 9. pressure head, 10 first support, 11 metallic plate, 12 block rubber 14
Layer laboratory sample 16 lower floor's laboratory sample 17 slides 18 19 second rotating shaft of first rotating shaft of measurer, 20 contact chip 21
Arm.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings：
As shown in figure 1, the analogue experiment installation that this reservoir pressure change induces interlayer slip includes frame 1, top is applied
Component 2, bottom pressure assembly 3 are pressed, top pressure assembly 2 is in the upper end of frame 1, and bottom pressure assembly 3 is in the lower end of frame 1；Frame 1
Base 4 on there is left and right two side walls 5, two side walls 5 of frame 1 are respectively arranged with one group of hydraulic stem, two groups of hydraulic stems point
Do not controlled by computer；Top pressure assembly 2 and bottom pressure assembly 3 are connected with the hydraulic stem of both sides respectively, top pressure
The pressure head 9 of component 2 is correspondingly arranged with the pressure head 9 of bottom pressure assembly 3, and by adjusting the elongation of hydraulic stem, adjustment top is applied
Press the distance between component 2 and bottom pressure assembly 3.Top pressure assembly 2 and bottom pressure assembly 3 by multiple pressure devices side by side
Installation is formed, and the pressure device quantity of the two is identical.In present embodiment, top pressure assembly 2 and bottom pressure assembly 3 are respectively set
10 pressure devices are equipped with, every pressure device all can complete independently work.
As shown in Fig. 2 pressure device include first support 10, oil cylinder 6, second support 13, pressure head 9, the two of first support 10
End has support arm 21, and each support arm 21 installs a guide rod 8.Pressure head 9 is fixed in the lower end of guide rod 8, and oil cylinder 6 is arranged on first
On frame 10, positioned at the centre of two guide rods 8, the piston rod 7 of oil cylinder 6 stretches out from first support 10, the upper end of second support 13 with
Piston rod 7 is connected, and the lower end of second support 13 is connected with pressure head 9, and pressure sensor 14 is installed at the both ends of second support 13 respectively.
Pressure head 9 is fixed together and formed by metallic plate 11 and block rubber 12, two guide rods 8, second support 13 with gold
Category plate 11 is fixedly connected, and the thickness of block rubber 12 is 10cm.
Above-mentioned reservoir pressure change induces the method that the analogue experiment installation of interlayer slip carries out pressurizing and deformation experiment：
First, the selection of laboratory sample：
Experiment, which needs to simulate after uneven upper lift deformation occurs for lower floor's laboratory sample 16, drives upper strata laboratory sample 15 to send out
Deformation is lifted in life, laboratory sample is deformed upon so that producing sliding between two layers of laboratory sample.Therefore according to abnormal scale model
Design theory, select two simulation materials similar with studying sleeve pipe damaged layer position rock and determine the several of laboratory sample
What size.The upper strata laboratory sample 15 of selection and lower floor's laboratory sample 16 is upper and lower is stacked together for experimental implementation.Pass through
The elongation of the both sides hydraulic stem of computer controlled machine frame 1, adjust the distance between top pressure assembly 2 and bottom pressure assembly 3.
The 2nd, auxiliary equipment sliding measurer is installed：
Fig. 3 provides the sliding for changing with reservoir pressure of the present invention and inducing the analogue experiment installation of interlayer slip and being used cooperatively
Measurer 17 measures the structural representation of sample, slides the first rotating shaft 18 and sliding 17 body phases of measuring appliance of measurer 17
Even, the second rotating shaft 19 is connected with the axle center of sliding measuring appliance 17.The sliding measurer 17 being used cooperatively with the present invention and survey
Point is connected, and as shown in Fig. 4, two rotating shafts for sliding measurer are connected by contact chip 20 with tested laboratory sample
Get up, be specially：The first rotating shaft 18 for sliding measurer 17 is connected with bottom before upper strata laboratory sample 15, slippage
Second rotating shaft 19 of measuring appliance 17 is connected with top before lower floor laboratory sample 16.In an experiment, multiple slidings are laid while
Measurer 17, measure slippage of the laboratory sample in diverse location.
3rd, laboratory sample pressurizing and deformation is tested：
After installing sliding measurer 17, pressurized operation is carried out to laboratory sample.The upper strata laboratory sample 15 stacked
With the both ends of lower floor laboratory sample 16, pass through the pressure head 9 and bottom pressure assembly 3 of the top pressure assembly 2 nearest apart from both ends
Pressure head 9 compress, complete the fixation work of laboratory sample.
4th, pressure deformation is carried out to laboratory sample, measures the relative slippage of interlayer：
By adjusting the oil cylinder 6 of pressure device in top pressure assembly 2, regulating piston bar 7 moves downward with dynamic head 9, right
Upper strata laboratory sample 15 is pressurizeed.Then the oil cylinder 6 of pressure device in bottom pressure assembly 3 is controlled, controls each pressure device
The elongation of piston rod 7 is different, the measured value passed out by the pressure sensor 14 connected in second support 13, adjusts in real time
Save the output pressure of each pressure device so that deformation is lifted in the generation of lower floor's laboratory sample 16, is lifted in the generation of lower floor's laboratory sample 16
Upper strata laboratory sample 15 is driven to deform upon after deformation, so as to which two layers of sample room slides.Can by sliding measurer 17
In the whole experiment of record in real time, slippage size during different distortion degree occurs for sample.
Claims (4)
1. a kind of reservoir pressure change induces the analogue experiment installation of interlayer slip, it is characterised in that：This reservoir pressure change
Inducing the analogue experiment installation of interlayer slip includes frame（1）, top pressure assembly（2）, bottom pressure assembly（3）, top is applied
Press component（2）, bottom pressure assembly（3）It is installed in frame（1）It is interior, frame（1）Base（4）It is upper that there is left and right two sides
Wall（5）, frame（1）Two side walls（5）It is respectively arranged with hydraulic stem, top pressure assembly（2）With bottom pressure assembly（3）Point
It is not connected with the hydraulic stem of both sides, top pressure assembly（2）Pressure head（9）With bottom pressure assembly（3）Pressure head（9）It is corresponding to set
Put；Top pressure assembly（2）With bottom pressure assembly（3）Composition, and the pressure device of the two is mounted side by side by more pressure devices
Quantity is identical, and pressure device includes first support（10）, oil cylinder（6）, second support（13）, pressure head（9）, first support（10）Two
Guide rod is fixedly mounted in end respectively（8）, guide rod（8）Pressure head is fixed in lower end（9）, oil cylinder（6）Installed in first support（10）On,
Positioned at two guide rods（8）Centre, oil cylinder（6）Piston rod（7）From first support（10）Stretch out, second support（13）Upper end
With piston rod（7）Connection, second support（13）Lower end and pressure head（9）Connection, second support（13）Both ends pressure is installed respectively
Sensor（14）.
2. reservoir pressure change according to claim 1 induces the analogue experiment installation of interlayer slip, it is characterised in that：Institute
The hydraulic stem stated is controlled by computer.
3. reservoir pressure change according to claim 2 induces the analogue experiment installation of interlayer slip, it is characterised in that：Institute
The pressure head stated（9）By metallic plate（11）And block rubber（12）It is fixed together to be formed, two guide rods（8）, second support（13）
And metallic plate（11）It is fixedly connected, block rubber（12）Thickness be 10cm.
4. reservoir pressure change according to claim 3 induces the analogue experiment installation of interlayer slip, it is characterised in that：Institute
The first support stated（10）Both ends there is support arm（21）, guide rod（8）Pass through support arm（21）Installed in first support（10）On.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510577527.5A CN105134197B (en) | 2015-09-11 | 2015-09-11 | Reservoir pressure change induces the analogue experiment installation and its experimental method of interlayer slip |
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| CN201510577527.5A CN105134197B (en) | 2015-09-11 | 2015-09-11 | Reservoir pressure change induces the analogue experiment installation and its experimental method of interlayer slip |
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| CN105134197B true CN105134197B (en) | 2017-11-24 |
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| CN105628492A (en) * | 2016-03-25 | 2016-06-01 | 西南石油大学 | Test device for strength and seal property of oil well pipe under shear load |
| CN109681164B (en) * | 2018-07-30 | 2021-07-23 | 东北石油大学 | Device for simulating casing damage process |
| CN112683561B (en) * | 2020-12-02 | 2022-09-09 | 哈尔滨工业大学（威海） | Earthquake fault simulation experiment platform |
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| CN201526318U (en) * | 2009-11-10 | 2010-07-14 | 鹏达建设集团有限公司 | Multi-layer drawing-type formation function simulator |
| CN202024935U (en) * | 2011-04-11 | 2011-11-02 | 东北石油大学 | Dynamic-load extrusion deformation measurement device of casing string |
| CN202330168U (en) * | 2011-11-14 | 2012-07-11 | 东北石油大学 | Simulation test device of separate layer fracturing layer cross flow |
| CN102539650B (en) * | 2011-11-18 | 2014-07-09 | 中国矿业大学(北京) | Photodetection mechanics test device for simulating deep rock explosion cracking |
| CN103105309B (en) * | 2013-01-22 | 2015-10-14 | 南京工业大学 | A kind of charger of in-situ artificial simulation reverse fault movement |
| CN203499680U (en) * | 2013-10-14 | 2014-03-26 | 长江大学 | Artificial well wall simulation pressing device |
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Inventor after: Hu Chaoyang Inventor after: Ai Chi Inventor after: Feng Fuping Inventor after: Wang Fengjiao Inventor after: Wei Xu Inventor after: Qu Junbo Inventor before: Ai Chi Inventor before: Hu Chaoyang Inventor before: Li Yuwei Inventor before: Mi Haohan Inventor before: Zhang Jun Inventor before: Tao Feiyu |
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Granted publication date: 20171124 Termination date: 20200911 |