CN106950125A - The experimental provision and its experimental method of a kind of simulation water horizontal well explosion fracturing - Google Patents
The experimental provision and its experimental method of a kind of simulation water horizontal well explosion fracturing Download PDFInfo
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- CN106950125A CN106950125A CN201710201960.8A CN201710201960A CN106950125A CN 106950125 A CN106950125 A CN 106950125A CN 201710201960 A CN201710201960 A CN 201710201960A CN 106950125 A CN106950125 A CN 106950125A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0039—Hammer or pendulum
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/023—Pressure
Abstract
The present invention relates to a kind of experimental provision of simulation water horizontal well explosion fracturing and its experimental method, the experimental provision includes rock sample clamping device, Charpy impact device and control analytical equipment；Rock sample clamping device includes a cylinder body, the rock core of different qualities can be placed in cylinder body, enter to press mouth, confined pressure pressure relief opening, gas outlet and seepage channel to export provided with being pressed into mouth, confined pressure in well on cylinder body, Charpy impact device includes pendulum, motor, roller, motor drives roller to rotate, and roller promotes pendulum to hit the movable plunger of cylinder body one end, and impulsive force is loaded to the rock core in cylinder body, and enter to press mouth to load confined pressure by confined pressure, load internal pressure by being pressed into mouth in well.Experimental provision of the present invention, available for detonation impact in horizontal wellbore is probed into response is destroyed for the rock core of different lithology, different length, it can realize that accurate experiment control operates and can carry out effective data analysis and statistics simultaneously, experiment effect is good, and effect is obvious.
Description
Technical field
The present invention relates to a kind of experimental provision of simulation water horizontal well explosion fracturing and its experimental method, belong to oil gas well development
Technical field.
Background technology
With the development of China's oil-gas exploration and development cause, emphasis has progressively been transferred to hypotonic by China's oil and gas development cause
On saturating oil reservoir.Low-permeability oil ensconces that China is widely distributed, rich reserves, but due to reasons such as Reservoir type is more, poor permeabilities, greatly
Part low-permeability oil deposit is difficult to employ.For such oil reservoir, explosion fracturing is carried out in horizontal well, with other pressure break mode phases
Than having the advantages that larger：Action time is short, help to link up the intrinsic fracture of man-made fracture and nearly well band, operation limitation less,
Pollute small, construction cost relatively low.In summary, horizontal well explosion fracturing technology prospect in development of low-permeability oil reservoir from now on is wide
It is wealthy.
Explosion fracturing technology is also known as High-Energy Gas Fracturing Technology (HEGF), and foreign countries just carry out the sixties from eighties of last century
Research to technique, China's research of technique since 1985, technology quickly grows and starts progressively should
For scene.Its basic role mechanism is as follows：It can be produced after gunpowder or propellant are in underground detonation within the time of Millisecond
Raw larger surge pressure, because this process generates higher compression rate, can produce a plurality of of radial direction and split in the earth formation
Seam, can link up intrinsic fracture while effectively penetration stain band, improve the penetrating power of oil reservoir.In this course,
Because the gas that the certain heat of the burning releasing of gunpowder or propellant and burning are produced meets water formation acid solution, it can remove
Block and lift yield.
For low-permeability oil deposit, horizontal well increases the production area of reservoir, improves the production efficiency of oil reservoir, effectively
The reservoir resource in inconvenient drilling well area is employed.At present the side that reservoir reconstruction mainly uses hydraulic fracturing is carried out for horizontal well
Method, correlation theory and experimental study are gradually improved.But, for the actual conditions of China, hydraulic fracturing relevance grade is not too much high,
This mainly due to：One is that hydraulic fracturing job institute water requirement is huge, but China's water resource is limited；Two be hydraulic fracturing exist compared with
Big pollution hidden trouble, the easily larger threat of the production and living generation to the local people masses.
Although research and application of the explosion fracturing technology in terms of straight well are relatively broad, for horizontal well reservoir reconstruction side
Face dabbles less, in China, is related to the researches and few of this technology.Horizontal well itself unique structures shape water
Horizontal well explosion fracturing technology is different from straight well, and this technology will meet that work progress is simple, generation pollution-free to nearly well band is split
Seam such as can not close at multiple conditions for a long time, but it is relevant study more delayed, constrain application of this technology in oil field.
At present, for rock, related strain quantifier elimination mainly passes through Hopkinson pressure bar after by moment impact
(SHPB) experiment and related perpendicular lesion device realize that still, the former can not be realized in rock core eyelet internal pressurization, and the latter
It is then that in the vertical direction impacts to rock core, it is impossible to realize the horizontal impact to rock core.
Thus, the present invention will provide a kind of lab simulation horizontal well explosion fracturing experimental provision and its experimental method, can lead to
The pendulum head for crossing the different extension spring of selection stiffness factor, torsionspring and different model is combined, and changes pendulum
The anglec of rotation so as to changing the relevant parameter of horizontal impact.In experimentation, pendulum be stretched spring, torsionspring,
And the effect of self gravitation rotates around roller shaft and hits movable plunger, fluid of the movable plunger into simulation well pressurizes, so that
Simulation water horizontal well explosion fracturing process；Rock core internal pressure and confined pressure in experimentation are recorded by the pressure sensor of diverse location
Change, and the flow of rock liquid that seepage flow goes out before and after being acted on by horizontal impact is collected and recorded by devices such as back-pressure valves
And the change of pressure, so as to probe into related physical property changing rule of the rock before and after being acted on by horizontal impact.
The content of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of easily operation, the with high safety and simulation preferable mould of effect
The experimental provision of pseudo-horizontal well explosion fracturing.
The present invention also provides the Examination on experimental operation of the experimental provision of above-mentioned simulation water horizontal well explosion fracturing.
Technical scheme is as follows：
A kind of experimental provision of simulation water horizontal well explosion fracturing, including rock sample clamping device, Charpy impact device and control
Analytical equipment；
Wherein, the rock sample clamping device includes a cylinder body, and cylinder body two ends are provided with left rock core plug and right rock core plug, cylinder body
Inner chamber is provided with the hollow area being fitted with rubber bush, the inwall circumference of rubber bush in steel wire sleeve, steel wire sleeve
For rock core chamber, side is communicated provided with being pressed into mouth in a well left rock core with rock core chamber beyond the Great Wall, and an activity post is provided with right rock core plug
Plug is communicated with rock core chamber, and cylinder body enters to press mouth, confined pressure pressure relief opening and gas outlet provided with confined pressure, and steel wire sleeve connection one is to extravasation
The seepage channel outlet of stream；
The Charpy impact device includes L bracket, roller, roller bearing, motor, pendulum, high resiliency rope and bullet
Setting is fixed by being connected to the fixation pillar and fixed cross beam of L bracket in spring, roller bearing, and roller housing is mounted in roller shaft
Hold, motor is connected with roller bearing, high resiliency rope one end connection roller, other end connecting spring, the one of spring
End is connected in L bracket, and pendulum is connected with roller, and pendulum is used to hit movable plunger；
The control analytical equipment includes computer, first pressure transmitter, second pressure transmitter, the 3rd pressure inverting
Device, back-pressure valve, first pressure sensor, second pressure sensor, the 3rd pressure sensor, the first valve, the second valve, the 3rd
Valve, force (forcing) pump and hand force (forcing) pump, wherein first pressure sensor are arranged on inner surface of cylinder block, and second pressure sensor is set
It is pressed into well at mouth；First pressure sensor is sequentially connected first pressure transmitter, computer, second pressure sensor
It is sequentially connected in second pressure transmitter, computer, well and is pressed into mouth and is sequentially connected the first valve, force (forcing) pump, seepage channel
Outlet is sequentially connected the second valve, back-pressure valve, the 3rd pressure sensor, the 3rd pressure transmitter, computer, confined pressure enter to press mouth according to
The 3rd valve of secondary connection, hand force (forcing) pump；Computer also with electronic mechatronics.
It is preferred that, in one end insertion rubber bush and steel wire sleeve of the left rock core plug, the other end passes through clamper
Left steel lid is encapsulated and the left steel lid of clamper is fixedly connected with cylinder body.
It is preferred that, in one end insertion rubber bush and steel wire sleeve of the right rock core plug, the other end runs through clamper
The right steel lid and right steel lid of clamper is fixedly connected with cylinder body.
It is preferred that, the inner chamber of cylinder body is also fixed at the two ends of the rubber bush by stepping up steel ring.
It is preferred that, the L bracket is Collapsible rack, including the bottom base and vertical gripper shoe being hinged.
It is preferred that, one end of the fixed pillar is vertical with bottom base to be connected, the other end and roller bearing are connected, described
One end of fixed cross beam is connected with vertical gripper shoe level connection joint, the other end and roller bearing.
It is preferred that, gear is provided with the roller bearing, motor is connected by chain with gear drive.This design
It is advantageous in that, motor drives roller bearing to rotate by chain gear transmission, and then drives roller to rotate.
It is preferred that, the Charpy impact device includes the different roller of two groups of diameters, wherein every group of roller includes two phases
With the roller unit of diameter, two groups of rollers are located at the two ends of roller bearing respectively, and every group of roller side is provided with electromagnet, put
Hammer can be attracted with electromagnet, and electromagnet is with calculating mechatronics.This design is advantageous in that pendulum is attracted with electromagnet,
So that pendulum fall when by electromagnet and roller integrated pushing so that more fully utilize spring elastic potential energy.
It is preferred that, anglec of rotation scale value is provided with the roller.
It is preferred that, the pendulum includes pendulum arm and pendulum head, and pendulum head detachable type is arranged on pendulum arm one end, pendulum
The other end of arm is connected in roller bearing.
It is preferred that, the Charpy impact device also includes fixing tightwire, and two fixations are respectively set at the two ends of roller bearing
Cable wire, two fixing tightwires are arranged symmetrically in the both sides of roller bearing and one end connection roller bearing of two fixing tightwires, another
One end connects bottom base.
A kind of operating method of the experimental provision of simulation water horizontal well explosion fracturing, comprises the following steps：
(1) according to requirement of experiment, the rock sample of different lithology is made, rock core is drilled through after obtained rock sample is dried, then will
Rock core is put into rock core chamber by rock core after carrying out grinding process, grinding process；
(2) start computer, run related software, zero point detection is carried out before experiment starts；
(3) open confined pressure to enter to press mouth and gas outlet, and open the 3rd valve, enclosed using hand force (forcing) pump to rock core loading
Pressure, treats that there is pressure liquid outflow gas outlet, shows that confined pressure has been filled it up with, close gas outlet and confined pressure is entered to press mouth；
(4) the first valve is opened, internal pressure is loaded to experiment rock core by force (forcing) pump, when being loaded into requirement of experiment internal pressure,
Force (forcing) pump and the first valve are closed, keeps internal pressure constant；
(5) the second valve, back-pressure valve are opened, by computer related software test the test of preceding rock core seepage flow property
And calculating；
(6) related software in operation computer, drives roller to rotate by motor, while observing what is be carved with roller
Angle index, when pendulum rotates to predetermined angular, controls motor to stop operating, pendulum up time by computer related software
Pin is rotated, and hits movable plunger；And rock core is recorded after by horizontal impact by computer software, the change of confined pressure and internal pressure
Process；
(7) after computer software has gathered the change procedure of confined pressure and internal pressure, then carried out by computer related software
The test and calculating of rock core seepage flow property after experiment；
(8) confined pressure pressure relief opening is opened, rock core confined pressure is unloaded, removal of core observes cracking situation.
The beneficial effects of the present invention are：
Experimental provision of the present invention, impacts for different lithology, the rock of different length available for detonation in horizontal wellbore is probed into
Heart destruction response, while can realize that accurate experiment control operates and can carry out effective data analysis and statistics, experiment effect
Fruit is good, and effect is obvious.
Brief description of the drawings
Fig. 1 is the structural representation of rock sample clamping device in the present invention；
Fig. 2 is the structural representation of Charpy impact device in the present invention；
Fig. 3 is the annexation schematic diagram of the whole experimental provision of the present invention；
Wherein：1-1 movable plungers, the right rock core plugs of 1-2,1-3 rock core gags, 1-4 reinforcing screws, the right steel lid of 1-5 clampers,
1-6 steps up steel ring, 1-7 rock core chambers, 1-8 gas outlets, and 1-9 confined pressures, which are entered, presses mouth, 1-10 confined pressure pressure relief openings, 1-11 support bases, 1-12
Pressure mouth, 1-15 cylinder bodies, 1-16 inner supports seat, 1-17 rubber sleeves are pressed into left rock core plug, the left steel lid of 1-13 clampers, 1-14 wells
Cylinder, 1-18 steel wire sleeves, the outlet of 1-19 seepage channels；
2-1 swivel bearings, 2-2 bottom bases, 2-3 vertical gripper shoes, 2-4 fixing tightwires, 2-5 fixes pillar, 2-6 rock cores
Clamper, 2-7 fixed cross beams, 2-8 springs, 2-9 high resiliency ropes, 2-10 roller bearings, 2-11 rollers, 2-12 pendulum heads, 2-
13 pendulum arms, 2-14 motor, 2-15 chains；
3-1 computers, 3-2 first pressure transmitters, 3-3 second pressure transmitters, the pressure transmitters of 3-4 the 3rd, 3-5 is returned
Pressure valve, 3-6 first pressure sensors, 3-7 second pressure sensors, the pressure sensors of 3-8 the 3rd, the valves of 3-9 first, 3-10
Two valves, the valves of 3-11 the 3rd, 3-12 force (forcing) pumps, the hand force (forcing) pumps of 3-13,3-14 support seats.
Embodiment
Below by embodiment and the present invention will be further described with reference to accompanying drawing, but not limited to this.
Embodiment 1：
As shown in Figure 1 to Figure 3, the present embodiment provides a kind of experimental provision of simulation water horizontal well explosion fracturing, experiment dress
Put and mainly include rock sample clamping device, Charpy impact device and control analytical equipment three parts；Rock sample clamping device is used to put
The rock core of different qualities is put, Charpy impact device is used to provide external force and load to make rock core be in different moulds to rock sample clamping device
Under near-ring border, control analytical equipment is used to analyze the various data that rock core is under different simulated environments.
Wherein, rock sample clamping device includes a cylinder block (1-15), and cylinder body level is horizontal, and the bottom of cylinder bottom is provided with two
Individual support base (1-11) is used for bracketing cylinder body, and cylinder body two ends are provided with left rock core plug and right rock core plug, and the inner chamber of cylinder body is provided with rubber
The sky in steel wire sleeve (1-18), steel wire sleeve is fitted with sleeve (1-17), the inwall circumference of rubber bush (1-17)
Heart district domain is rock core chamber (1-7), and rock core cavity length is that can place the rock core of different qualities, rubber bush (1- in 30cm, rock core chamber
17) inner chamber of cylinder block is fixed in two ends by stepping up steel ring (1-6), and the left end of steel wire sleeve (1-18) connects left rock core plug (1-
12), by ledge structure supporting steel wire net cylinder (1-18) in one end insertion rubber bush (1-17) of left rock core plug (1-12),
The other end of left rock core plug (1-12) passes cylinder body and encapsulated by the left steel lid of clamper (1-13) and the left steel lid of clamper (1-13)
It is fixedly connected by screw (1-4) is reinforced with cylinder body (1-15)；The right-hand member of steel wire sleeve (1-18) connects right rock core plug (1-
2) it is right, by ledge structure supporting steel wire net cylinder (1-18) in one end insertion rubber bush (1-17) of right rock core plug (1-2)
The other end of rock core plug (1-2) passes cylinder body and the right steel lid of clamper (1-5) and the right steel lid of clamper (1-5) is by reinforcing screw
(1-4) is fixedly connected with cylinder body (1-15), and a movable plunger (1-1) is provided with right rock core plug (1-2), movable plunger (1-1)
One end stretches out right rock core plug (1-2) and passes through rock core gag (1-3), and rock core gag (1-3) is fixed with right rock core plug (1-2) end to be connected
Connect for blocking right rock core plug (1-2).Left rock core plug (1-12) center be provided with passage communicated with rock core chamber (1-7) and with clamping
It is pressed into mouth (1-14) in well at the top of the left steel lid of device (1-13) to communicate, right rock core plug (1-2) center is provided with passage and rock
The chambers of the heart (1-7) is communicated and communicated with the movable plunger (1-1) in the right steel lid of clamper (1-5), be provided with the top of cylinder body (1-15) with
The confined pressure that inner chamber is communicated enters to press mouth (1-9) and gas outlet (1-8), and cylinder body (1-15) bottom is provided with the confined pressure pressure release communicated with inner chamber
Mouth (1-10), the seepage channel that steel wire sleeve (1-18) connects an outside seepage flow is simultaneously set in the left steel lid of clamper (1-13) bottom
There is seepage channel to export (1-19).
Charpy impact device includes L bracket, two groups of rollers, roller bearing, motor, pendulum, high resiliency rope and bullet
Spring.L bracket is Collapsible rack, is hinged by bottom base (2-2) and vertical gripper shoe (2-3) by swivel bearing (2-1)
Together, vertical gripper shoe (2-3) can be rotated around swivel bearing (2-1), when vertical gripper shoe (2-3) rotates counterclockwise to 90 degree
When vertical gripper shoe (2-3) perpendicular to bottom base (2-2) set, bottom base (2-2) and vertical gripper shoe (2-3) are one
The cuboid of the larger facing of the individual length of side.Two fixed pillars (2-5) and two fixed cross beams are connected with L bracket
(2-7), two fixed pillars (2-5) and two fixed cross beams (2-7) are symmetricly set on both sides in L bracket, wherein fixed branch
Post (2-5) is perpendicular to bottom base, and fixed cross beam (2-7) horizontal vertical is in vertical gripper shoe, fixed pillar and fixed cross beam phase
Meeting at a little is used for back-up roller wheel bearing (2-10), and roller bearing (2-10) is the cylindric bearing of steel, and interior steel column is often held than outer
The two ends of steel column, two groups of rollers in the long 8cm of steel column, fixation pillar (2-5) and fixed cross beam (2-7) joining connection of both sides
(2-11) is sleeved in roller bearing (2-10), and two groups of roller diameters are different, and every group of roller includes the roller of two same diameters
Unit, is provided with electromagnet, electromagnet is a cuboid, and electromagnet bottom is provided with recessed in every group of roller close to the side of pendulum
Groove, available for adhesive pendulum.Pendulum includes pendulum head (2-12) and pendulum arm (2-13), and pendulum head (2-12) is used to hit activity
Plunger (1-1), one end of pendulum arm (2-13) be connected in roller bearing (2-10) and pendulum arm can with electromagnet is attracted makes
Pendulum arm is placed in the groove of electromagnet, and high resiliency rope (2-9) is tied up on each roller unit, other end connecting spring
The one end of (2-8), the other end of spring (2-8) is fixed in vertical gripper shoe (2-3).On the outer steel column of roller bearing (2-10)
Gear is provided with, gear is connected by chain (2-15) and motor (2-14), drives roller to rotate by motor.Rolling
Scale is provided with wheel (2-11), when motor (2-14) drives roller rotation, can be carved with by observing on roller (2-11)
Anglec of rotation scale, so as to indicate the anglec of rotation of pendulum.
Control analytical equipment include computer (3-1), first pressure transmitter (3-2), second pressure transmitter (3-3),
3rd pressure transmitter (3-4), back-pressure valve (3-5), first pressure sensor (3-6), second pressure sensor (3-7), the 3rd
Pressure sensor (3-8), the first valve (3-9), the second valve (3-10), the 3rd valve (3-11), force (forcing) pump (3-12) and hand
Force (forcing) pump (3-13) is shaken, wherein first pressure sensor (3-6) is arranged at cylinder body (1-15) inner surface S1, second pressure sensing
Device (3-7), which is arranged in well, to be pressed at mouth V1；First pressure sensor (3-6) is sequentially connected first pressure transmitter (3-
2), computer (3-1), second pressure sensor (3-7) is sequentially connected second pressure transmitter (3-3), computer (3-1), well
Intraocular is pressed into mouth (1-14) and is sequentially connected the first valve (3-9), force (forcing) pump (3-12), and seepage channel outlet (1-19) connects successively
Connect the second valve (3-10), back-pressure valve (3-5), the 3rd pressure sensor (3-8), the 3rd pressure transmitter (3-4), computer
(3-1), confined pressure enters to press mouth (1-9) to be sequentially connected the 3rd valve (3-11), hand force (forcing) pump (3-13), hand force (forcing) pump (3-13)
It is placed on support base (3-14).Computer (3-1) is also electrically connected with motor (2-14), electromagnet, realizes Automated condtrol.
The operation principle of experimental provision of the present invention is as follows：
This experimental provision can be carried out to external diameter 30-110mm, long 50-300mm, a diameter of 5-15mm of central aperture rock core
Horizontal well explosion fracturing simulated experiment, encloses so as to probe into rock core simulation well internal pressure, rock core before and after by horizontal impact effect
The changing rule of pressure and seepage flow property.Wherein, gas outlet is used to release the gas between rubber bush and cylinder body, when confined pressure is entered
When pressing the valve opening of mouth, the valve opening of gas outlet, when there is liquid spilling in gas outlet, shows that confined pressure has been filled it up with；Confined pressure is entered
Pressing mouth is used to load confined pressure to simulation core, and pressure liquid is water or other liquid；Confined pressure pressure relief opening is used for after experiment terminates
Unload and mouth is pressed into confined pressure, well for being applied internal pressure to simulation well, pressure liquid is water or other liquid, rubber sleeve
Cylinder is used to completely cut off the liquid for applying confined pressure to experiment rock core, prevents from causing because rock core is in contact with pressure liquid in experimentation
Rock core physical property changes；Steel wire sleeve is made up of fine and closely woven steel wire, is looped around around rock core, it is possible to reduce rock core by
To the impulsive force of rubber sleeve when being deformed to horizontal impact, there is seepage channel in the middle of steel wire sleeve, for by rock core seepage flow
The liquid gone out is drawn；Seepage channel outlet other end connection back-pressure valve, is gone out for collecting rock core by seepage flow before and after horizontal impact
Fluid.Meanwhile, it can be mutually combined and change by using the extension spring of different stiffness factors and the pendulum head of different model
Become the anglec of rotation of pendulum arm, it is achieved thereby that changing horizontal impact loading speed (37.38MPa/ms- on a large scale
298.85MPa/ms) (less loading speed condition：The pendulum anglec of rotation is 30 degree, and extension spring species used is semicircular hook
Ring-like, material is carbon spring steel wires, and material diameter is 6mm, and mean diameter of coil is 65mm, and number of active coils is 43.25, drift
For 338mm, stiffness factor is 1030N/m；Larger loading speed condition：The pendulum anglec of rotation is 120 degree, extension spring used
Species is semicircle shackle-type, and material is carbon spring steel wires, and material diameter is 8mm, and mean diameter of coil is 50mm, and number of active coils is
35.25, drift is 334mm, and stiffness factor is 9180N/m)；Meanwhile, length difference, rock can be placed in the rock core chamber of cylinder body
Property different rock core several piece, rung for probing into detonation impact in horizontal wellbore and being destroyed for the rock core of different lithology, different length
Should, collection, analysis, calculating and the statistics of corresponding data are carried out subsequently through the computer related software in control analytical equipment.
Embodiment 2：
A kind of experimental provision of simulation water horizontal well explosion fracturing, as described in Example 1, its difference is structure：Rubber
Rubber sleeve (1-17) is also fixed on cylinder body (1-15) inner chamber by the inner support seat (1-16) of four equidistantly distributeds.Inner support seat
Reinforcement effect is mainly played, bigger support force is provided for rubber bush, it is to avoid overweight experiment rock core crushes rubber bush.
Embodiment 3：
A kind of experimental provision of simulation water horizontal well explosion fracturing, as described in Example 1, its difference is structure：
The two ends of roller bearing (2-10) respectively set two fixing tightwires (2-4), in two fixing tightwire (2-s of the roller bearing with one end
4) both sides of roller bearing (2-10) and one end of two fixing tightwires (2-4) are arranged symmetrically in and connects roller bearing (2-10)
Interior steel column, other end connection bottom base (2-2), two fixing tightwires (2-4) and bottom base (2-2) constitute isoceles triangle
Shape.Fixing tightwire can increase the support reliability of roller bearing, ensure stability during pendulum rotary impact movable plunger.
Embodiment 4：
A kind of Examination on experimental operation of simulation water horizontal well explosion fracturing, using the experimental provision described in embodiment 1, using weight
The square pendulum head for 4kg is measured, stiffness factor is that (material is steel wire to 3100N/m, and wire diameter is 8.0mm, mean diameter of coil
For 80mm, coil length is 212mm, and number of active coils is 25.5 circles) extension spring 4.Rock is probed into horizontal impact to make
Dependent variable and cracking situation under.
Specific operation process is as follows：
(1) according to requirement of experiment, the rock sample of different lithology is made, machine drill is drilled through using rock core after obtained rock sample is dried
Coring, is then carried out rock core after grinding process, grinding process, and obtained rock core is carried out into saturated process.
(2) rubber bush (1-17) is enclosed within into left rock core plug (1-12) not to be carved with screw thread, steel is installed in rubber bush
Silk screen sleeve (1-18), this entirety is put into inner chamber of cylinder block, will be real when left rock core plug is contacted with inner support seat (1-16)
Test rock core to be put into steel wire sleeve (1-18), cover upper right rock core plug (1-2) in rubber bush (1-17) other end, be subsequently mounted
Steel ring (1-6) is stepped up at two ends, afterwards the left steel lid of installing holder (1-13), and is reinforced with screw (1-4) is reinforced.
(3) vertical gripper shoe (2-3) is rotated counterclockwise to position shown in Fig. 2 from horizontal level, by pendulum head (2-12)
On pendulum arm (2-13), high resiliency rope (2-9) is respectively wound around on corresponding roller (2-11), respectively by spring
(2-8) is installed on vertical gripper shoe (2-3) relevant position, and fixed cross beam (2-7) is closely connected with roller bearing (2-10)
It is connected together, rotation roller (2-11) to suitable position connects corresponding spring (2-8) and high resiliency rope (2-9), with
Afterwards, motor (2-14) is connected with the gear in roller bearing (2-10) with chain (2-15).
(4) right rock core plug (1-2), and installation activity plunger (1-1), rock core successively are installed in rubber bush (1-17) right-hand member
Gag (1-3), the right steel lid of installing holder (1-5), and reinforced with screw (1-4) is reinforced.
(5) computer (3-1) is opened, related software is run, zero point detection is carried out before experiment starts.
(6) open the confined pressure on cylinder body and enter to press mouth (1-9) and gas outlet (1-8), and open the 3rd valve (3-11), utilize
The hand pump (3-13) that pressurizes loads confined pressure to rock core, treats that there is pressure liquid outflow gas outlet (1-8), shows that confined pressure has been filled it up with, close
Close gas outlet (1-8) and confined pressure enters to press mouth (1-9).
(7) the first valve (3-9) is opened, by force (forcing) pump (3-12), experiment rock core loading internal pressure is given.It is loaded into design
During pressure, force (forcing) pump (3-12) and the first valve (3-9) are closed, keeps internal pressure constant.
(8) computer (3-1) related software, back-pressure valve (3-5), the second valve (3-10) are opened, preceding rock core is tested in progress
The test and calculating of seepage flow property.
(9) related software in operation computer (3-1), drives pendulum to rotate by motor, while observing roller (2-
11) angle index being carved with, when pendulum rotates to predetermined angular, clicks on the START button of software in computer (3-1),
Motor is not rotated further by, and pendulum is rotated clockwise under the drive of extension spring and roller, hits movable plunger (1-1).
(10) experiment starts, using the software records rock core in computer (3-1) after by horizontal impact, confined pressure and interior
The change procedure of pressure.
(11) " end " button of computer (3-1) interior software is clicked on, the collection of related data is terminated.
(12) using the software in computer (3-1), back-pressure valve (3-5), the second valve (3-10), after progress experiment terminates
The test and calculating of rock core penetration property.
(13) confined pressure pressure relief opening (1-10) is opened, rock core confined pressure is unloaded, reinforcing screw (1-4), the right steel lid of clamper is unloaded
(1-5), step up steel ring (1-6), unload rock core internal pressure, removal of core observes cracking situation.
(14) experiment equipment is arranged, experimental data is handled.
Claims (10)
1. a kind of experimental provision of simulation water horizontal well explosion fracturing, it is characterised in that filled including rock sample clamping device, Charpy impact
Put and control analytical equipment；
Wherein, the rock sample clamping device includes a cylinder body, and cylinder body two ends are provided with left rock core plug and right rock core plug, the inner chamber of cylinder body
Provided with rubber bush, the hollow area being fitted with the inwall circumference of rubber bush in steel wire sleeve, steel wire sleeve is rock
The chambers of the heart, side is communicated provided with being pressed into mouth in a well left rock core with rock core chamber beyond the Great Wall, be provided with right rock core plug a movable plunger and
Rock core chamber is communicated, and cylinder body enters to press mouth, confined pressure pressure relief opening and gas outlet provided with confined pressure, the outside seepage flow of steel wire sleeve connection one
Seepage channel is exported；
The Charpy impact device includes L bracket, roller, roller bearing, motor, pendulum, high resiliency rope and spring, rolling
Setting is fixed by being connected to the fixation pillar and fixed cross beam of L bracket in wheel bearing, and roller housing is mounted in roller bearing,
Motor is connected with roller bearing, high resiliency rope one end connection roller, other end connecting spring, one end connection of spring
In L bracket, pendulum is connected with roller, and pendulum is used to hit movable plunger；
It is described control analytical equipment include computer, first pressure transmitter, second pressure transmitter, the 3rd pressure transmitter,
Back-pressure valve, first pressure sensor, second pressure sensor, the 3rd pressure sensor, the first valve, the second valve, the 3rd valve
Door, force (forcing) pump and hand force (forcing) pump, wherein first pressure sensor are arranged on inner surface of cylinder block, and second pressure sensor is arranged on
It is pressed into well at mouth；First pressure sensor is sequentially connected first pressure transmitter, computer, second pressure sensor according to
Mouth is pressed into secondary connection second pressure transmitter, computer, well and is sequentially connected the first valve, force (forcing) pump, and seepage channel goes out
Mouth is sequentially connected the second valve, back-pressure valve, the 3rd pressure sensor, the 3rd pressure transmitter, computer, and confined pressure enters to press mouth successively
Connect the 3rd valve, hand force (forcing) pump；Computer also with electronic mechatronics.
2. the experimental provision of simulation water horizontal well explosion fracturing as claimed in claim 1, it is characterised in that the left rock core plug
One end is inserted in rubber bush and steel wire sleeve, and the other end passes through the left steel lid encapsulation of clamper and the left steel lid of clamper and cylinder body
It is fixedly connected；
In one end insertion rubber bush and steel wire sleeve of the right rock core plug, the other end runs through the right steel lid of clamper and clamping
The right steel lid of device is fixedly connected with cylinder body.
3. the experimental provision of simulation water horizontal well explosion fracturing as claimed in claim 1, it is characterised in that the rubber bush
The inner chamber of cylinder body is also fixed at two ends by stepping up steel ring.
4. the experimental provision of simulation water horizontal well explosion fracturing as claimed in claim 1, it is characterised in that the L bracket is
Collapsible rack, including the bottom base and vertical gripper shoe being hinged；
One end of the fixed pillar is vertical with bottom base to be connected, the other end and roller bearing are connected, the fixed cross beam
One end is connected with vertical gripper shoe level connection joint, the other end and roller bearing.
5. the experimental provision of simulation water horizontal well explosion fracturing as claimed in claim 1, it is characterised in that in the roller bearing
Gear is provided with, motor is connected by chain with gear drive.
6. the experimental provision of simulation water horizontal well explosion fracturing as claimed in claim 1, it is characterised in that the Charpy impact dress
Put including the different roller of two groups of diameters, wherein every group of roller includes the roller unit of two same diameters, two groups of roller difference
Positioned at the two ends of roller bearing, every group of roller side is provided with electromagnet, pendulum can be attracted with electromagnet, electromagnet and meter
Calculate mechatronics.
7. the experimental provision of the simulation water horizontal well explosion fracturing as described in claim 1 or 6, it is characterised in that on the roller
It is provided with anglec of rotation scale value.
8. the experimental provision of simulation water horizontal well explosion fracturing as claimed in claim 6, it is characterised in that the pendulum includes pendulum
Hammerhead jib and pendulum head, pendulum head detachable type are arranged on pendulum arm one end, and the other end of pendulum arm is connected in roller bearing.
9. the experimental provision of simulation water horizontal well explosion fracturing as claimed in claim 4, it is characterised in that the Charpy impact dress
Putting also includes fixing tightwire, and two fixing tightwires are respectively set at the two ends of roller bearing, and two fixing tightwires are arranged symmetrically in rolling
One end connection roller bearing of the both sides of wheel bearing and two fixing tightwires, other end connection bottom base.
10. a kind of operating method of the experimental provision of simulation water horizontal well explosion fracturing as described in claim any one of 1-9, bag
Include following steps：
(1) according to requirement of experiment, the rock sample of different lithology is made, rock core is drilled through after obtained rock sample is dried, then by rock core
Rock core is put into rock core chamber after carrying out grinding process, grinding process；
(2) start computer, run related software, zero point detection is carried out before experiment starts；
(3) open confined pressure to enter to press mouth and gas outlet, and open the 3rd valve, load confined pressure to rock core using hand force (forcing) pump, treat
There is pressure liquid outflow gas outlet, shows that confined pressure has been filled it up with, and closes gas outlet and confined pressure is entered to press mouth；
(4) the first valve is opened, internal pressure is loaded to experiment rock core by force (forcing) pump, when being loaded into requirement of experiment internal pressure, closed
Force (forcing) pump and the first valve, keep internal pressure constant；
(5) the second valve, back-pressure valve are opened, by computer related software test test and the meter of preceding rock core seepage flow property
Calculate；
(6) related software in operation computer, drives roller to rotate by motor, while observing the angle being carved with roller
Scale, when pendulum rotates to predetermined angular, controls motor to stop operating, pendulum turns clockwise by computer related software
It is dynamic, hit movable plunger；And rock core is recorded after by horizontal impact by computer software, the change of confined pressure and internal pressure
Journey；
(7) after computer software has gathered the change procedure of confined pressure and internal pressure, then tested by computer related software
The test and calculating of rock core seepage flow property afterwards；
(8) confined pressure pressure relief opening is opened, rock core confined pressure is unloaded, removal of core observes cracking situation.
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| CN109738296A (en) * | 2019-03-01 | 2019-05-10 | 中国石油大学(北京) | Wellbore aquation caving pressure test device and method |
| CN109991143A (en) * | 2017-12-31 | 2019-07-09 | 中国人民解放军63653部队 | The horizontal Seepage Flow Simulation Test Unit of the rock soil medium of sample cell size adjustable |
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