CN207393190U - The experimental provision that geological structure simulation influences drainage procedure strata pressure - Google Patents
The experimental provision that geological structure simulation influences drainage procedure strata pressure Download PDFInfo
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- CN207393190U CN207393190U CN201721219709.6U CN201721219709U CN207393190U CN 207393190 U CN207393190 U CN 207393190U CN 201721219709 U CN201721219709 U CN 201721219709U CN 207393190 U CN207393190 U CN 207393190U
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Abstract
The utility model is the experimental provision that a kind of geological structure simulation influences drainage procedure strata pressure, the experimental provision includes the first experiment cylinder body and the second experiment cylinder body, the first sealing clamp is set in first experiment cylinder body, the first back-up sand area is formed between the bottom of first sealing clamp and the first experiment cylinder body, the second sealing clamp is set in second experiment cylinder body, the second back-up sand area is formed between the bottom of second sealing clamp and the second experiment cylinder body, first back-up sand area and the second back-up sand area can pass through connecting pipeline unilaterally connected, the bottom of first experiment cylinder body sets flowing line, flowmeter is set on flowing line；First back-up sand area forms near wellbore zone simulation region, and the second back-up sand area forms remote well area simulation region.The experimental provision can realize the real-time measurement to nearly well, remote well area pressure, probe into influence of the geological structure to strata pressure changing rule in drainage procedure by simulation, effectively instruct site operation, it is ensured that smooth, effective progress that pressure control discharges water.
Description
Technical field
The utility model is related to oil technical field of measurement and test more particularly to a kind of geological structure simulation to drainage procedure stratum
The experimental provision of pressure influence.
Background technology
Controlled pressure drilling technology is to solve narrow ' Safe Density Windows stratum at present the complex drillings such as leakiness, spray, bit freezing easily occur
One important technology of problem.Huge thick saline bed, huge thickness saline bed Engineering Geologic Characteristics can be usually run into Process of Oil Well Drilling
Complexity, interlayer super-pressure brine are generally developed, vertically and horizontally upper irregular distribution, and barometric gradient changes greatly, and prediction before drilling is difficult.Salt
Water layer safety drilling Density Window is narrow, the complex situations such as sprays, leaks, blocking using conventional drilling technologies and taking place frequently.Once generation underground thing
Therefore a large amount of drilling fluid leakages can be caused, the drillng operation cycle is not only increased, but also drillng operation cost is substantially increased.For
Ensure the safety drilling of ultra-deep super-pressure brine layer, it is necessary to the technology that discharges water to high pressured slatwater layer progress pressure control.Pressure control water discharge technology
Condition have following three points：1. the high pressure brine finite volume of trap between salt；2. being drilled into low pressure layer releases brine, pressure system is reduced
Number；3. a well discharges water, offset well is benefited.By the technology that discharges water to high pressured slatwater layer implementation pressure control, by the stratum of high pressured slatwater layer
Then pressure drop is carried out the safety drilling of high pressured slatwater layer using normal drilling fluid density, solved down to normal stress levels
Because of overflow, even the leakage generation of the serious accidents such as bit freezing, sidetracking that super-pressure is brought in drilling process, salt deposit brill has been saved
The well time, reduce drilling cost.
However, scene finds following phenomenon during implementing pressure control and discharging water：It discharges water initial stage, strata pressure is with accumulative draining
The increase of amount is gradually reduced；After draining for a period of time, no longer decline with the increase of accumulative displacement；It is further with draining
It carries out, strata pressure is begun to decline again.Discharge water process (ultra-deep in ultra-deep super-pressure pressure control：Depth>6000m；Super-pressure：Pressure
Power>In 100Mpa), it may appear that strata pressure with the interim steady constant situation of accumulative displacement, for understand fully whether be because
Nearly well high pressure, remote well low pressure caused by geological structure cause this variation of strata pressure, it is necessary to carry out stratum draining experiment, visit
Strata pressure is studied carefully with accumulative displacement changing rule, and then live pressure control is instructed to discharge water operation, for ultra-deep super-pressure brine layer
Safety drilling provides certain directive significance.
Since the pressure control technology of discharging water is a kind of safety drilling of the reply ultra-deep super-pressure brine layer newly proposed in recent years
Matched process technology, relative technical equipment is very rare, really probes into geological structure to drainage procedure on simulation
The experimental provision or method that middle strata pressure changing rule influences are even more fewer and fewer.At present device relevant with strata pressure or
Method is concentrated mainly in the theoretical calculation and Fluid pressure measurement of strata pressure, mainly according to geologic information and well log interpretation
Carry out the prediction of strata pressure；It is concentrated mainly on the pressure control relevant device or method that discharge water on the wellhead assembly of open flow release,
It is mainly with some relevant devices of well control.In conclusion currently without can preferably simulation probe into geological structure to row
The experimental provision that strata pressure changing rule influences during water, the operation that can not discharge water to live pressure control are instructed.
The present inventor relies on experience and the practice for being engaged in relevant industries for many years as a result, proposes a kind of geological structure simulation pair
The experimental provision that drainage procedure strata pressure influences, to realize the guidance for the operation that discharges water to live pressure control, to ultra-deep super-pressure salt
The safety drilling of water layer has directive significance.
Utility model content
The purpose of this utility model is to provide the experiments that a kind of geological structure simulation influences drainage procedure strata pressure
Device realizes the real-time measurement to nearly well, remote well area pressure, and probe into geological structure by simulation is laminated in drainage procedure
The influence of power changing rule, effectively instructs site operation, it is ensured that smooth, effective progress that pressure control discharges water.
The purpose of this utility model is achieved in that a kind of geological structure simulation influenced drainage procedure strata pressure
Experimental provision；The experimental provision includes the first experiment cylinder body and the second experiment cylinder body that top can be open and can seal, described
Being provided in first experiment cylinder body can be sealed against sliding and can be fixed first close along the madial wall of the described first experiment cylinder body
Pressing plate is sealed, the first back-up sand area of sealing is formed between first sealing clamp and the bottom of the first experiment cylinder body, it is described
Being provided in second experiment cylinder body can be sealed against sliding and can be fixed second close along the madial wall of the described second experiment cylinder body
Pressing plate is sealed, the second back-up sand area of sealing is formed between second sealing clamp and the bottom of the second experiment cylinder body, it is described
The bottom in the first back-up sand area and the second back-up sand area can be filled out by the way that liquid is allowed to flow to described first from the second back-up sand area
The connecting pipeline connection in sand area, the connecting pipeline set connecting line pressure gauge close to one end of the described second experiment cylinder body；Institute
Stating the space in the first experiment cylinder body above first sealing clamp can be pumped by the first pressurized pipeline and first pressure
Connection, the exit of the first pressure pump are provided with the first moulding pressure table, and the first experiment cylinder body is located at described first
The first saturation water pipeline can be communicatively provided on the side wall in back-up sand area, the entrance of the first saturation water pipeline can be with described
One compression pump connects；One side of the bottom of the first experiment cylinder body away from the described second experiment cylinder body can communicatively set draining
Pipeline, the inlet of the flowing line set discharge pressure table, and the exit of the flowing line sets flowmeter；Described
Space in two experiment cylinder bodies above second sealing clamp can be connected by the second pressurized pipeline with second pressure pump,
The exit of the second pressure pump is provided with the second moulding pressure table, and the second experiment cylinder body is located at the second back-up sand area
Side wall on can communicatively be provided with the second saturation water pipeline, the entrance of the second saturation water pipeline can be with the second pressure
Pump connection；The first back-up sand area of the first experiment cylinder body forms near wellbore zone simulation region, the second experiment cylinder body
The second back-up sand area forms remote well area simulation region.
In a better embodiment of the utility model, the exit of the first pressure pump sets the first valve, institute
The exit for stating the first pressurized pipeline sets the second valve, and the exit of the first saturation water pipeline sets the 3rd valve, institute
It states and the 4th valve is set on flowing line between the discharge pressure table and the flowmeter；The second pressure pump goes out
5th valve is set at mouthful, and the exit of second pressurized pipeline sets the 6th valve, and the second saturation water pipeline goes out
7th valve is set at mouthful.
In a better embodiment of the utility model, the entrance of the first saturation water pipeline can be communicatively arranged at
On first pressurized pipeline between first moulding pressure table and second valve；The second saturation water pipeline
Entrance can be communicatively arranged on second pressurized pipeline between second moulding pressure table and the 6th valve.
In a better embodiment of the utility model, being provided in the connecting pipeline allows liquid from described second
Back-up sand area flows to the check valve in the first back-up sand area, and the check valve is located at the first back-up sand area and the connection line pressure
Between table.
In a better embodiment of the utility model, on the madial wall of the first experiment cylinder body and positioned at described the
It is provided with above one sealing clamp removedly and contact can limit the first of first sealing clamp from top to bottom and fix
Block；It is provided on the madial wall of the second experiment cylinder body and above second sealing clamp removedly and energy
Contact limits the second fixed block of second sealing clamp from top to bottom.
In a better embodiment of the utility model, first fixed block can be secured by bolts in described first
On the madial wall for testing cylinder body, second fixed block can be secured by bolts on the madial wall of the second experiment cylinder body.
In a better embodiment of the utility model, the first experiment cylinder body is rectangle groove body, and described first is real
Testing the top setting of cylinder body can dismantle and can seal fixed first top plate, be located at described first in the first experiment cylinder body
The first pressurization space, first pressurized pipeline and first pressurization space are formed between top plate and first sealing clamp
It can communicatively set；The second experiment cylinder body is rectangle groove body, and the top setting of the second experiment cylinder body can dismantle and energy
Seal fixed second top plate, the interior structure between second top plate and second sealing clamp of the second experiment cylinder body
Into the second pressurization space, second pressurized pipeline can communicatively be set with second pressurization space.
In a better embodiment of the utility model, one end of the connecting pipeline, first pressurized pipeline, institute
The first saturation water pipeline and the flowing line is stated to be connected on the first experiment cylinder body by thread seal；The connecting tube
The other end of line, second pressurized pipeline and the second saturation water pipeline are connected to second experiment by thread seal
On cylinder body.
From the above mentioned, the experimental provision that geological structure simulation provided by the utility model influences drainage procedure strata pressure
It has the advantages that：
(1) in the experimental provision that the geological structure simulation of the utility model influences drainage procedure strata pressure, reasonable cloth
Experiment cylinder body, pipeline and pressure gauge, flowmeter are put, energy preferably simulation probes into geological structure and strata pressure in drainage procedure is become
Law influences, workable, and data acquisition is simple and comprehensive, and apparatus structure is simply light and handy；
(2) in the experimental provision that the geological structure simulation of the utility model influences drainage procedure strata pressure, by fixation
Block is fixed by bolts on experiment inboard wall of cylinder block, realizes effective limitation to sealing clamp, back-up sand when avoiding saturated brine
The problem of high pressure in area excessively above pushes up sealing clamp；
(3) in the experimental provision that the geological structure simulation of the utility model influences drainage procedure strata pressure, device has
Two are tested cylinder bodies, and the simulation near wellbore zone high pressure, remote well area low voltage situations can have both been realized in experimentation, can also
Realize all be to nearly well, remote well area high-pressure situations simulation, and height pressure difference is adjustable, thus device it is adaptable it is wide,
The advantages of adjustability is strong；
(4) experimental provision and its user that the geological structure simulation of the utility model influences drainage procedure strata pressure
Method can influence of the analog study geological structure to strata pressure changing rule in drainage procedure well, live pressure control is instructed to discharge water
Being smoothed out for operation, is with a wide range of applications.
Description of the drawings
The following drawings is only intended in doing schematic illustration and explanation to the utility model, does not limit the model of the utility model
It encloses.Wherein：
Fig. 1：For the signal for the experimental provision that the geological structure simulation of the utility model influences drainage procedure strata pressure
Figure.
Fig. 2：The experimental provision back-up sand shape influenced for the geological structure simulation of the utility model on drainage procedure strata pressure
State schematic diagram.
Fig. 3：For the utility model geological structure simulation on the experimental provision back-up sand that drainage procedure strata pressure influences after
Seal schematic diagram.
Fig. 4：The experimental provision back-up sand area influenced for the geological structure simulation of the utility model on drainage procedure strata pressure
Schematic diagram during saturated water.
Fig. 5：For the pressurization for the experimental provision that the geological structure simulation of the utility model influences drainage procedure strata pressure
Space pressurization schematic diagram.
Fig. 6：First in the experimental provision influenced for the geological structure simulation of the utility model on drainage procedure strata pressure
Back-up sand area drainage and step-down view.
Fig. 7：The experimental provision second that drainage procedure strata pressure influences is filled out for the geological structure simulation of the utility model
Sand area and the first back-up sand area draining schematic diagram.
Fig. 8：The experimental provision second that drainage procedure strata pressure influences is filled out for the geological structure simulation of the utility model
Schematic diagram after sand area and the first back-up sand area pressure control discharge water.
Fig. 9：For the experiment for the experimental provision that the geological structure simulation of the utility model influences drainage procedure strata pressure
Entity relationship diagram.
In figure：
100th, the experimental provision that geological structure simulation influences drainage procedure strata pressure；
1st, the first experiment cylinder body；
101st, the first back-up sand area；102nd, the first pressurization space；
11st, the first sealing clamp；12nd, the first fixed block；13rd, the first top plate；
2nd, the second experiment cylinder body；
201st, the second back-up sand area；202nd, the second pressurization space；
21st, the second sealing clamp；22nd, the second fixed block；23rd, the second top plate；
3rd, connecting pipeline；31st, connecting line pressure gauge；
41st, the first pressurized pipeline；42nd, the second pressurized pipeline；
51st, first pressure pumps；511st, the first moulding pressure table；
52nd, second pressure pumps；521st, the second moulding pressure table；
61st, the first saturation water pipeline；62nd, the second saturation water pipeline；
7th, flowing line；71st, discharge pressure table；
8th, flowmeter；
91st, the first valve；92nd, the second valve；93rd, the 3rd valve；94th, the 4th valve；95th, the 5th valve；96th, the 6th valve
Door；97th, the 7th valve；98th, check valve.
Specific embodiment
For a clearer understanding of the technical features, objectives and effects of the utility model, existing control description of the drawings
Specific embodiment of the present utility model.
As shown in Figures 1 to 9, the utility model provides what a kind of geological structure simulation influenced drainage procedure strata pressure
Experimental provision 100；The the first experiment cylinder body 1 and second that can be open and can seal including top tests cylinder body 2, the first experiment cylinder
Slip and fixed first sealing clamp 11 of energy can be sealed against along the madial wall of the first experiment cylinder body 1 by being provided in body 1, the
The first back-up sand area 101 of sealing is formed between the bottom of one sealing clamp 11 and the first experiment cylinder body 1, second tests in cylinder body 2
Slip and fixed second sealing clamp 21 of energy, the second sealing can be sealed against along the madial wall of the second experiment cylinder body 2 by being provided with
The second back-up sand area 201 of sealing is formed between the bottom of the experiment cylinder body 2 of pressing plate 21 and second, the first back-up sand area 101 is filled out with second
The bottom in sand area 201 can be connected by the connecting pipeline 3 that liquid is allowed to flow to from the second back-up sand area 201 first back-up sand area 101, even
Take over line 3 sets connecting line pressure gauge 31 close to one end of the second experiment cylinder body 2；It is located at the first sealing in first experiment cylinder body 1
The space of 11 top of pressing plate can be connected by the first pressurized pipeline 41 with first pressure pump 51, and the exit of first pressure pump 51 is set
It is equipped with the first moulding pressure table 511, the first experiment cylinder body 1, which is located on the side wall in the first back-up sand area 101, can communicatively be provided with the
One saturation water pipeline 61, the entrance of the first saturation water pipeline 61 can pump 51 with first pressure and connect；The bottom of first experiment cylinder body 1
One side away from the second experiment cylinder body 2 can communicatively set flowing line 7, and the inlet of flowing line 7 sets discharge pressure table
71, the exit of flowing line 7 sets flowmeter 8；Positioned at the space energy of 21 top of the second sealing clamp in second experiment cylinder body 2
It is connected by the second pressurized pipeline 42 with second pressure pump 52, the exit of second pressure pump 52 is provided with the second moulding pressure table
521, the second experiment cylinder body 2, which is located on the side wall in the second back-up sand area 201, can communicatively be provided with the second saturation water pipeline 62, and second
The entrance of saturation water pipeline 62 can pump 52 with second pressure and connect；First back-up sand area 101 of the first experiment cylinder body 1 is with forming nearly well
Band simulation region back-up sand and forms near wellbore zone simulated formation, the second experiment cylinder after being densified to strata pressure in the first back-up sand area 101
Second back-up sand area 201 of body 2 forms remote well area simulation region, and back-up sand and structure after strata pressure is densified in the second back-up sand area 201
Into remote well area simulated formation.
In the experimental provision that the geological structure simulation of the utility model influences drainage procedure strata pressure, reasonable Arrangement is real
Cylinder body, pipeline and pressure gauge, flowmeter are tested, preferably simulation can probe into geological structure to strata pressure variation rule in drainage procedure
Rule influences, workable, and data acquisition is simple and comprehensive, and apparatus structure is simply light and handy；Sealing clamp can be fixed on experiment cylinder
On the madial wall of body, sealing clamp is excessively gone up the problem of pushing up by the high pressure in back-up sand area when avoiding saturated brine；The utility model
The experimental provision that is influenced on drainage procedure strata pressure of geological structure simulation in, there are two experiment cylinder body, experimentations for device
In can both realize simulation near wellbore zone high pressure, remote well area low voltage situations, can also realize to nearly well, remote well area all
It is the simulation of high-pressure situations, and height pressure difference is adjustable, therefore the advantages of device is adaptable wide, adjustability is strong；This
The experimental provision that the geological structure simulation of utility model influences drainage procedure strata pressure can analog study ground texture well
It makes the influence to strata pressure changing rule in drainage procedure, live pressure control is instructed to discharge water being smoothed out of operation, is had extensive
Application prospect.
Further, as shown in Figure 1, the exit of first pressure pump 51 sets the first valve 91, the first pressurized pipeline 41
Exit sets the second valve 92, and the exit of the first saturation water pipeline 61 sets the 3rd valve 93, is located at row on flowing line 7
4th valve 94 is set between water pressure table 71 and flowmeter 8；The 5th valve 95 of exit setting of second pressure pump 52, second
The exit of pressurized pipeline 42 sets the 6th valve 96, and the exit of the second saturation water pipeline 62 sets the 7th valve 97.Each valve
Door is serially connected with by thread seal in each respective lines, is respectively used to control the connection of each pipeline.
Further, as shown in Figure 1, the entrance of the first saturation water pipeline 61 can communicatively be arranged at the first moulding pressure table
511 and second the first pressurized pipeline 41 between valve 92 on；The entrance of second saturation water pipeline 62 can communicatively be arranged at
On the second pressurized pipeline 42 between two moulding pressure tables 521 and the 6th valve 96.In the present embodiment, the first saturation water pipe
The entrance of line 61 is communicated in by T connector fixation on the first pressurized pipeline 41, and the entrance of the second saturation water pipeline 62 passes through T-shaped
Connector fixation is communicated on the second pressurized pipeline 42.First saturation water pipeline 61 and the first pressurized pipeline 41 are used in conjunction with one
One compression pump 51, the second saturation water pipeline 62 and the second pressurized pipeline 42 are used in conjunction with a second pressure pump 52, improve each
The service efficiency of compression pump simplifies circuit and sets.
Further, as shown in Figure 1, being provided in connecting pipeline 3 allows liquid to flow to the first back-up sand from the second back-up sand area 201
The check valve 98 in area 101, check valve 98 is between the first back-up sand area 101 and connecting line pressure gauge 31.Check valve 98 can be effective
Ground prevents the liquid in the first back-up sand area 101 from flowing to the second back-up sand area 201.
Further, as shown in Figure 1 and Figure 2, on the madial wall of the first experiment cylinder body 1 and positioned at the upper of the first sealing clamp 11
Side be provided with removedly and can from top to bottom contact limit the first sealing clamp 11 the first fixed block 12；Second experiment cylinder
On the madial wall of body 2 and it is provided with removedly positioned at the top of the second sealing clamp 21 and contact can limits the from top to bottom
Second fixed block 22 of two sealing clamps 21.In the present embodiment, it is real to be secured by bolts in first for the first fixed block 12
It tests on the madial wall of cylinder body 1, the second fixed block 22 can be secured by bolts on the madial wall of the second experiment cylinder body 2.First is solid
Determine 12 and second fixed block 22 of block and realize effective limitation to the first sealing clamp 11, the second sealing clamp 21 respectively, avoid
First back-up sand area 101 during saturated brine, the high pressure in the second back-up sand area 201 are by the first sealing clamp 11,21 mistake of the second sealing clamp
The problem of being pushed up on degree.
Further, as shown in Figure 1 and Figure 2, the first experiment cylinder body 1 is rectangle groove body, and the top of the first experiment cylinder body 1 is set
It can dismantle and fixed first top plate 13 can be sealed, be located at the first top plate 13 and the first sealing clamp 11 in the first experiment cylinder body 1
Between form the first pressurization space 102, the first pressurized pipeline 41 can communicatively be set with the first pressurization space 102；Second experiment
Cylinder body 2 is rectangle groove body, and the top of the second experiment cylinder body 2 sets and can dismantle and can seal fixed second top plate 23, and second is real
It tests in cylinder body 2 and the second pressurization space 202, the second pressurized pipeline 42 is formed between the second top plate 23 and the second sealing clamp 21
It can communicatively be set with the second pressurization space 202.When needing the back-up sand into the first experiment cylinder body 1, the first top plate 13, the are disassembled
One sealing clamp 11 after back-up sand, installs and fixes the first sealing clamp 11, then seals and fix the first top plate 13；Need to
In second experiment cylinder body 2 during back-up sand, the second top plate 23, the second sealing clamp 21 are disassembled, after back-up sand, installs and fixes the
Two sealing clamps 21, then seal and fix the second top plate 23.
Further, one end of connecting pipeline 3, the first pressurized pipeline 41, the first saturation water pipeline 61 and flowing line 7 pass through
Thread seal is connected on the first experiment cylinder body 1；The other end of connecting pipeline 3, the second pressurized pipeline 42 and the second saturation water pipe
Line 62 is connected to by thread seal on the second experiment cylinder body 2.Each pressure gauge is connected to corresponding pipeline by thread seal
On.
Reality is carried out on the experimental provision 100 that drainage procedure strata pressure influences using the geological structure simulation of the utility model
The influence of the purpose tested strata pressure changing rule in geological structure is probed into drainage procedure in simulation, and verify strata pressure
Whether steadily constant with accumulative displacement stage is distant place low pressure area water after being reduced because of near wellbore zone high pressure region pressure
Source is supplemented near wellbore zone so that strata pressure occurs interim steady constant.
The experimental provision 100 influenced using geological structure simulation provided by the utility model on drainage procedure strata pressure
Experimental method comprises the following steps,
Step a, as shown in Fig. 2, completing the pipeline assembling of experimental provision 100, it is real that the first sealing clamp 11 is placed in first
Test the outside of cylinder body 1, the second sealing clamp 21 is placed in the outside of the second experiment cylinder body 2, determine that each valve is closed, really
The leakproofness of fixed each pipeline；
Step b, as shown in Figure 2 and Figure 3, gauze is close to the madial wall of the first experiment cylinder body 1 and the second experiment cylinder body 2
On, it tests back-up sand in cylinder body 2 to the first experiment cylinder body 1 and second and, to setting height, forms the first back-up sand area 101 and the second back-up sand
First sealing clamp 11 is put into the inside of the first experiment cylinder body 1 and pressed in the top of sand, in the first sealing clamp by area 201
The first fixed block 12 is installed in 11 top, seals and is fixedly connected with the first top plate 13 of the first experiment cylinder body 1 so that the first experiment
Cylinder body 1 is sealed from top；Second sealing clamp 21 is put into the inside of the second experiment cylinder body 2 and is pressed in the top of sand,
The second fixed block 22 is installed in the top of two sealing clamps 21, seals and is fixedly connected with the second top plate 23 of the second experiment cylinder body 2, makes
The second experiment cylinder body 2 is obtained to seal from top；
Step c, as shown in figure 4, opening the first valve 91, the 3rd valve 93 and the 5th valve 95, the 7th valve 97, start
Brine is pressed into first by first pressure pump 51 and second pressure pump 52 using first pressure pump 51 by the first saturation water pipeline 61
It tests in cylinder body 1, is pressed into brine in the second experiment cylinder body 2 by the second saturation water pipeline 62 using second pressure pump 52, it is right
The second back-up sand area 201 in the first back-up sand area 101 and the second experiment cylinder body 2 in first experiment cylinder body 1 carries out saturated brine, the
One back-up sand area 101 and the second back-up sand area 201 close the 3rd valve 93 and the 7th valve 97 after being saturated, and record each pressure at this time
The registration of table；
Pump pressure (the first moulding pressure table 511 and the second moulding pressure table 521 of first pressure pump 51 and second pressure pump 52
Registration) and discharge pressure table 71, connecting line pressure gauge 31 registration stablize when, it is believed that the first back-up sand area 101 and the second back-up sand
Area 201 is saturated.
Step d, as shown in figure 5, opening the second valve 92 and the 6th valve 96, brine is passed through using first pressure pump 51
First sealing clamp, 11 top (i.e. in the first pressurization space 102) in first pressurized pipeline 41 press-in the first experiment cylinder body 1, uses
Brine is pressed into the second experiment cylinder body 2 above second sealing clamp 21 (i.e. by second pressure pump 52 by the second pressurized pipeline 42
In second pressurization space 202), increasing the pressure of each compression pump makes each sealing clamp respectively to the corresponding back-up sand area (ground of simulation
Layer) pressurization, the compacting in each back-up sand area is completed, the registration of discharge pressure table 71 is higher than the registration of connecting line pressure gauge at this time, respectively fills out
Brine in sand area forms high pressure water layer, and the pressure for maintaining each compression pump is constant；
It should be noted that in step d, the pressure value of observation discharge pressure table 71 and connecting line pressure gauge 31 treats draining
The pressure value of pressure gauge 71 and connecting line pressure gauge 31 reaches experiment setting numerical value (in one embodiment, discharge pressure table
71 numerical value reaches 1.5MPa, and the numerical value of connecting line pressure gauge 31 reaches 1MPa) and during stable reading, determine that back-up sand area is pressed
It is real.
Step e, as shown in fig. 6, opening the 4th valve 94, initial time carries out small displacement draining, completes the first back-up sand area
The drainage and step-down of 101 high pressure water layer records once the numerical value of each pressure gauge and accumulative displacement at regular intervals；In this reality
With in a new specific embodiment, interval time 1min；
Step f, keep quantitative draining and record the numerical value of each pressure gauge and accumulative displacement, until discharge pressure table 71
Pressure registration is reduced to the pressure registration of connecting line pressure gauge 31 (in one embodiment, which is 1MPa)；
Step g, as shown in fig. 7, when the pressure registration of discharge pressure table 71 is less than the pressure registration of connecting line pressure gauge 31,
The brine in the second back-up sand area 201 is flowed through connecting pipeline 3, check valve 98, the first back-up sand area 101 to flowing line 7, is continued
Drainage and step-down process data recording records once the numerical value of each pressure gauge and accumulative displacement at regular intervals；In this practicality
In a new specific embodiment, interval time 1min；
Step h, as shown in figure 8, keeping quantitative draining and recording the numerical value of each pressure gauge and accumulative displacement, until draining
The 4th valve 94 is closed when the pressure registration of pressure gauge 71 and connecting line pressure gauge 31 no longer changes, stops drainage and step-down；
Step g, each compression pump and each valve are closed, the in vivo brine of each experiment cylinder and sand are discharged, clean each experiment cylinder
Body and each pipeline complete experiment.
After experiment, the data of record are subjected to integration processing, discharge pressure table 71 and connection when drawing drainage and step-down
The pressure value of line pressure table 31 is with relation curve between accumulative displacement.The pressure value P of discharge pressure table 71 and accumulative displacement V
Relation curve as shown in figure 9, and when discharge pressure table 71 pressure registration be less than connecting line pressure gauge 31 pressure registration when,
The pressure registration of connecting line pressure gauge 31 declines, then when illustrating to carry out drainage and step-down, nearly well high pressure area pressure reduces, when nearly well
When below area drop in formation pressure to remote well low pressure area strata pressure, remote well area water source is flowed near wellbore zone, so as to
There is strata pressure with the interim steady constant variation tendency of accumulative displacement.
From the above mentioned, the experimental provision that geological structure simulation provided by the utility model influences drainage procedure strata pressure
It has the advantages that：
(1) in the experimental provision that the geological structure simulation of the utility model influences drainage procedure strata pressure, reasonable cloth
Experiment cylinder body, pipeline and pressure gauge, flowmeter are put, energy preferably simulation probes into geological structure and strata pressure in drainage procedure is become
Law influences, workable, and data acquisition is simple and comprehensive, and apparatus structure is simply light and handy；
(2) in the experimental provision that the geological structure simulation of the utility model influences drainage procedure strata pressure, by fixation
Block is fixed by bolts on experiment inboard wall of cylinder block, realizes effective limitation to sealing clamp, back-up sand when avoiding saturated brine
The problem of high pressure in area excessively above pushes up sealing clamp；
(3) in the experimental provision that the geological structure simulation of the utility model influences drainage procedure strata pressure, device has
Two are tested cylinder bodies, and the simulation near wellbore zone high pressure, remote well area low voltage situations can have both been realized in experimentation, can also
Realize all be to nearly well, remote well area high-pressure situations simulation, and height pressure difference is adjustable, thus device it is adaptable it is wide,
The advantages of adjustability is strong；
(4) experimental provision and its user that the geological structure simulation of the utility model influences drainage procedure strata pressure
Method can influence of the analog study geological structure to strata pressure changing rule in drainage procedure well, live pressure control is instructed to discharge water
Being smoothed out for operation, is with a wide range of applications.
The above descriptions are merely exemplary embodiments of the present utility model, is not limited to the model of the utility model
It encloses.Any those skilled in the art, the made equivalent change on the premise of the design of the utility model and principle is not departed from
Change and change, the scope of the utility model protection should all be belonged to.
Claims (8)
1. a kind of experimental provision that geological structure simulation influences drainage procedure strata pressure；It is characterized in that, the experiment dress
The the first experiment cylinder body that can be open and can seal including top and the second experiment cylinder body are put, is set in the first experiment cylinder body
Slip and fixed first sealing clamp of energy can be sealed against along the madial wall of the described first experiment cylinder body by having, and described first is close
The first back-up sand area of sealing is formed between the bottom of envelope pressing plate and the first experiment cylinder body, is set in the second experiment cylinder body
Slip and fixed second sealing clamp of energy can be sealed against along the madial wall of the described second experiment cylinder body by having, and described second is close
Form the second back-up sand area of sealing between the bottom of envelope pressing plate and the second experiment cylinder body, the first back-up sand area and described the
The bottom in two back-up sand areas can by allow liquid from the second back-up sand area flow to the first back-up sand area connecting pipeline connect,
The connecting pipeline sets connecting line pressure gauge close to one end of the described second experiment cylinder body；It is located in the first experiment cylinder body
Space above first sealing clamp can be connected by the first pressurized pipeline with first pressure pump, the first pressure pump
Exit is provided with the first moulding pressure table, and the first experiment cylinder body is located at can be communicatively on the side wall in the first back-up sand area
The first saturation water pipeline is provided with, the entrance of the first saturation water pipeline can be pumped with the first pressure to be connected；Described first
Flowing line can communicatively be set by testing one side of the bottom of cylinder body away from the described second experiment cylinder body, and the flowing line enters
Discharge pressure table is set at mouthful, and the exit of the flowing line sets flowmeter；It is located in the second experiment cylinder body described
Space above second sealing clamp can be connected by the second pressurized pipeline with second pressure pump, the outlet of the second pressure pump
Place is provided with the second moulding pressure table, and the second experiment cylinder body is located on the side wall in the second back-up sand area and can communicatively set
There is the second saturation water pipeline, the entrance of the second saturation water pipeline can be pumped with the second pressure to be connected；First experiment
The first back-up sand area of cylinder body forms near wellbore zone simulation region, and the second back-up sand area of the second experiment cylinder body is formed far
Well area simulation region.
2. the experimental provision that geological structure simulation as described in claim 1 influences drainage procedure strata pressure, feature exist
In the exit of the first pressure pump sets the first valve, and the exit of first pressurized pipeline sets the second valve, institute
The exit for stating the first saturation water pipeline sets the 3rd valve, is located at the discharge pressure table and the stream on the flowing line
4th valve is set between gauge；The exit of the second pressure pump sets the 5th valve, and second pressurized pipeline goes out
6th valve is set at mouthful, and the exit of the second saturation water pipeline sets the 7th valve.
3. the experimental provision that geological structure simulation as claimed in claim 2 influences drainage procedure strata pressure, feature exist
In the entrance of the first saturation water pipeline can be communicatively arranged between first moulding pressure table and second valve
First pressurized pipeline on；The entrance of the second saturation water pipeline can communicatively be arranged at second moulding pressure table
On second pressurized pipeline between the 6th valve.
4. the experimental provision that geological structure simulation as described in claim 1 influences drainage procedure strata pressure, feature exist
In being provided in the connecting pipeline allows liquid to flow to the check valve in the first back-up sand area, institute from the second back-up sand area
Check valve is stated between the first back-up sand area and the connecting line pressure gauge.
5. the experimental provision that geological structure simulation as described in claim 1 influences drainage procedure strata pressure, feature exist
In being provided on the madial wall of the first experiment cylinder body and above first sealing clamp removedly and energy
Contact limits the first fixed block of first sealing clamp from top to bottom；On the madial wall of the second experiment cylinder body and it is located at
It is provided with above second sealing clamp removedly and contact can limit the of second sealing clamp from top to bottom
Two fixed blocks.
6. the experimental provision that geological structure simulation as claimed in claim 5 influences drainage procedure strata pressure, feature exist
In first fixed block can be secured by bolts on the madial wall of the first experiment cylinder body, the second fixed block energy
It is secured by bolts on the madial wall of the second experiment cylinder body.
7. the experimental provision that geological structure simulation as described in claim 1 influences drainage procedure strata pressure, feature exist
In the first experiment cylinder body is rectangle groove body, and the top of the first experiment cylinder body sets and can dismantle and can seal fixed
First top plate, the first experiment cylinder body is interior to form the first pressurization between first top plate and first sealing clamp
Space, first pressurized pipeline can communicatively be set with first pressurization space；The second experiment cylinder body is rectangular channel
Body, the top of the second experiment cylinder body set and can dismantle and can seal fixed second top plate, in the second experiment cylinder body
Form the second pressurization space between second top plate and second sealing clamp, second pressurized pipeline with it is described
Second pressurization space can communicatively be set.
8. the experimental provision that geological structure simulation as described in claim 1 influences drainage procedure strata pressure, feature exist
In one end of the connecting pipeline, first pressurized pipeline, the first saturation water pipeline and the flowing line pass through spiral shell
Line is sealedly attached on the first experiment cylinder body；The other end of the connecting pipeline, second pressurized pipeline and described
Two saturation water pipelines are connected to by thread seal on the second experiment cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721219709.6U CN207393190U (en) | 2017-09-21 | 2017-09-21 | The experimental provision that geological structure simulation influences drainage procedure strata pressure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721219709.6U CN207393190U (en) | 2017-09-21 | 2017-09-21 | The experimental provision that geological structure simulation influences drainage procedure strata pressure |
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| CN207393190U true CN207393190U (en) | 2018-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721219709.6U Withdrawn - After Issue CN207393190U (en) | 2017-09-21 | 2017-09-21 | The experimental provision that geological structure simulation influences drainage procedure strata pressure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542457A (en) * | 2017-09-21 | 2018-01-05 | 中国石油大学(北京) | The experimental provision and method that geological structure simulation influences on drainage procedure strata pressure |
| CN109287441A (en) * | 2018-10-31 | 2019-02-01 | 昆明理工大学 | A kind of variable-flow irrigation system for pressing salt |
-
2017
- 2017-09-21 CN CN201721219709.6U patent/CN207393190U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542457A (en) * | 2017-09-21 | 2018-01-05 | 中国石油大学(北京) | The experimental provision and method that geological structure simulation influences on drainage procedure strata pressure |
| CN109287441A (en) * | 2018-10-31 | 2019-02-01 | 昆明理工大学 | A kind of variable-flow irrigation system for pressing salt |
| CN109287441B (en) * | 2018-10-31 | 2023-08-22 | 福建省恒鼎建筑工程有限公司 | Variable flow irrigation system capable of pressing salt |
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