CN209670960U - A kind of rammell horizontal well fracturing experimental provision - Google Patents
A kind of rammell horizontal well fracturing experimental provision Download PDFInfo
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- CN209670960U CN209670960U CN201921528659.9U CN201921528659U CN209670960U CN 209670960 U CN209670960 U CN 209670960U CN 201921528659 U CN201921528659 U CN 201921528659U CN 209670960 U CN209670960 U CN 209670960U
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- rammell
- horizontal well
- gauge
- hole
- experimental provision
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Abstract
The utility model discloses a kind of rammell horizontal well fracturing experimental provisions, including simulation wellbore hole, test rock core, core holding unit and fracturing pump, experiment rock core is set in core holding unit and is provided with hole, simulation wellbore hole is set in the hole of experiment rock core, simulation wellbore hole includes inner barrel and outer barrel, internal screw thread is equipped in outer cylinder, inner cylinder is equipped with external screw thread, multiple outer apopores are additionally provided on outer cylinder simultaneously, inner cylinder is equipped with interior apopore, inner cylinder connects fracturing pump, outer cylinder top is equipped with pocket set, several card slots are equipped in pocket set, it is additionally provided with the snap-gauge with pocket matches simultaneously.The utility model is by setting snap-gauge and card slot, so that pit shaft is fixed on core holding unit, whole experiment process is safer, and installation process also more quickly, conveniently, saves the time；It can also be according to the installation length of the depth adjustment pit shaft of experiment rock core inner hole；By the way that drainpipe is arranged, it is able to observe that the discharge situation of fracturing fluid, while displacement test can also be carried out after crushing test.
Description
Technical field
The utility model relates to formation breakdown technical fields, and in particular to a kind of rammell horizontal well fracturing experiment dress
It sets.
Background technique
Pressure break is the important means of oil-gas reservoir storey increase design, with the unconventional oil and gas with shale gas and fine and close oil for representative
The exploitation of resource, horizontal well stage fracturing technology have obtained large-scale application.Horizontal well fracturing refers to according to reservoir
Physical property characteristic carries out staged fracturing for net horizontal section different location stratum, increases the contact surface in crack and stratum with multistage pressure break
Product obtains higher initil output and improves ultimate recovery.Currently, lot of domestic and foreign scholar has carried out largely fracturing fracture
Experimental study, but most of physical analogys for being only able to achieve the single-ended pressure break of individual well.
207686702 U of Chinese patent CN disclose be recycled in a kind of horizontal well in segments hydraulic fracturing experiments it is practical
Pressure break pipe device, the device offer out by the way that screw thread is arranged on interior pit shaft and outer shaft wall, while on interior pit shaft and outer shaft wall
Water hole injects fracturing fluid by water outlet, realizes the purpose for repeating to carry out net horizontal section hydraulic fracturing test.
But the patent there is a problem that it is erroneous for installation, the hypertonia that is subject to of pit shaft when testing in order to prevent and pressed
Out, security risk is caused, needs to smear AB glue on pit shaft in advance when implementing the patent, well is fixed by the bonding force of AB glue
Cylinder.But this method is relatively complicated, and AB glue is easy inactivation at high temperature under high pressure, there are security risks.
Utility model content
In view of the above technical problem, the purpose of this utility model is to provide a kind of experiments of rammell horizontal well fracturing
Device solves fixation problem of the inner/outer tube in experiment rock core.
The utility model uses following technical scheme are as follows:
A kind of rammell horizontal well fracturing experimental provision, including simulation wellbore hole, experiment rock core, core holding unit and pressure
Pump is split, the experiment rock core is set in core holding unit and is provided with pit shaft mounting hole, and the simulation wellbore hole is set to experiment rock core
In hole, the simulation wellbore hole includes inner barrel and outer barrel, and internal screw thread is equipped in the outer cylinder, and corresponding, the inner cylinder is equipped with outer
Screw thread, while multiple outer apopores are additionally provided on outer cylinder, the inner cylinder is equipped with interior apopore, and the inner cylinder connects fracturing pump,
The outer cylinder top is equipped with the pocket set that array is uniformly arranged around outer cylinder axle center, is equipped in pocket set several equidistant from top to bottom
The card slot of setting, while it being additionally provided with the snap-gauge with pocket matches, the quantity of the snap-gauge is identical with pocket set quantity, while snap-gauge
It is equipped with threaded hole, the snap-gauge is fixed on core holding unit by bolt, threaded hole and clamp nut.
Further, the core holding unit is equipped at least one draining in addition to each side of pit shaft mounting surface
Pipe, the drainpipe are also connected with displacement pump, and the drainpipe is equipped with pressure gauge.
Further, in being additionally provided with gauge line on the pipeline that fracturing pump connects, the gauge line is equipped with to flow the inner cylinder
Meter and pressure gauge.
The beneficial effects of the utility model are:
1, the utility model is fixed on pit shaft on core holding unit, is not only made by setting snap-gauge and card slot
Outer cylinder will not because in experimentation hypertonia be forced out, whole experiment process is safer, and whole installation process is more
Quickly, the time conveniently, is saved；Can also be according to the installation length of the depth adjustment pit shaft of experiment rock core inner hole, the scope of application is more
Extensively.
2, by setting drainpipe, the discharge situation of fracturing fluid can not only be clearly observed, while can also
Displacement test is carried out after crushing test, by the displacement changes in flow rate before and after observation pressure break, analyzes pressure break bring effect.
Detailed description of the invention
Fig. 1 is the utility model overall schematic；
Fig. 2 is inner barrel and outer barrel structural schematic diagram；
Fig. 3 is the structural schematic diagram of card slot and snap-gauge；
In figure, 1, experiment rock core, 2, core holding unit, 3, fracturing pump, 4, inner cylinder, 5, outer cylinder, 6, displacement pump, 7, draining
Pipe, 8, confining pressure pump, 9, flowmeter, 10, pressure gauge, 11, outer apopore, 12, interior apopore, 13, snap-gauge, 14, bolt, 15, pressure
Tight nut, 16, card slot.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the utility model, it should be noted that
Under the premise of not colliding, it can be formed in any combination between various embodiments described below or between each technical characteristic new
Embodiment.
Embodiment:
A kind of rammell horizontal well fracturing experimental provision, including core holding unit 2, core holding unit 2 is interior to be equipped in fact
Rock core 1 is tested, is equipped with pit shaft mounting hole in experiment rock core 1, which can be the drilling on natural core, be also possible to artificial
The preformed hole of rock core；Simulation wellbore hole is set in the pit shaft mounting hole of experiment rock core 1, wherein simulation wellbore hole includes inner cylinder 4 and outer cylinder
5, outer cylinder 5 is interior to be equipped with internal screw thread, and corresponding, inner cylinder 4 is equipped with external screw thread, is connected through a screw thread between interior outer shaft wall, while interior
Cylinder 4 can be moved up and down in outer cylinder 5 by screw thread, and multiple outer apopores 11 are additionally provided on outer cylinder 5, and inner cylinder 4 is equipped with interior water outlet
Hole 12, inner cylinder 4 connect fracturing pump 3, be also successively arranged on the pipeline that inner cylinder 4 and fracturing pump 3 connect flowmeter 10, metering branch pipe and
Valve, metering branch pipe are equipped with valve and flowmeter 9；
5 top of outer cylinder is equipped with 4 groups of pocket sets being uniformly arranged around 5 axle center of outer cylinder, and 4 are equipped in pocket set from top to bottom etc.
The card slot 16 of spacing setting, while being additionally provided with and being equipped with threaded hole, snap-gauge 13 with 16 matched 4 pieces of snap-gauges 13 of card slot, snap-gauge 13
It is fixed on core holding unit 2 by bolt 14, threaded hole and clamp nut 15, in use, one end of snap-gauge 13 is embedded in card slot
16, snap-gauge 13 is fixed on core holding unit 2 by the other end by threaded hole, bolt 14 and clamp nut 15, when multiple snap-gauges
13 when being both secured to core holding unit 2, and outer cylinder 5 is also just fixed on entire core holding unit 2.
Optional embodiment is that core holding unit 2 is equipped with a drainpipe in addition to each side of pit shaft mounting surface
7, drainpipe 7 is connected with displacement pump 6, and the minimum number of displacement pump 6 is zero, and maximum quantity is no more than 7 numbers of drainpipe, drainpipe
7 are equipped with pressure gauge 10.When 6 connection quantity of displacement pump is zero, observable fracturing fluid goes out liquid situation from each drainpipe 7, into
And qualitative analysis in this direction pressure break generate crack number；After pressure break, if after this pressure break need to be tested in this direction
The variation of permeability then connects displacement pump 6, with strata pressure displacement, observes pit shaft liquid outlet quantity.
Meanwhile in order to simulate more true ground environment, confining pressure pump 8 is also connected on core holding unit 2.
When the utility model is used, on natural core drilling or artificial core on reserve certain diameter size hole, dress
Enter outer cylinder 5, while snap-gauge 13 be inserted into card slot 16, after snap-gauge 13 is fixed on core holding unit 2, by screw thread by inner cylinder 4
It screws in outer cylinder 5, and interior apopore 12 is directed at outer apopore 11, confining pressure pump 8 applies the confining pressure for being equal to strata pressure, pressure break
Pump 3 starts to pressurize, and when drainpipe 7 has fracturing fluid to be discharged and flow velocity is relatively stable, closes fracturing pump 3 and simultaneously closes off fracturing pump 3
The valve of outlet, simultaneously closes off the valve on drainpipe 7, maintain pressure for a period of time after, pressure break is completed.
After the completion of pressure break, when needing the fracturing effect of observation experiment rock core either direction, then drive in this direction is opened
For pump 6, compared by observing the numerical value of gauge line flow meter 9, and with the numerical value before pressure break, the effect for the secondary pressure break that you can get it
Fruit.
In the description of the present invention, it should be noted that the orientation or position of the instructions such as term " one end ", " other end "
Setting relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, and
It is not that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore
It should not be understood as limiting the present invention.
It will be apparent to those skilled in the art that can make various other according to the above description of the technical scheme and ideas
Corresponding change and deformation, and all these changes and deformation all should belong to the protection of the utility model claims
Within the scope of.
Claims (8)
1. a kind of rammell horizontal well fracturing experimental provision, including simulation wellbore hole, experiment rock core, core holding unit and pressure break
Pump, the experiment rock core are set in core holding unit and are provided with hole, and the simulation wellbore hole is set in the hole of experiment rock core, the mould
Quasi- pit shaft includes inner barrel and outer barrel, and internal screw thread is equipped in the outer cylinder, corresponding, and the inner cylinder is equipped with external screw thread, while outer
Multiple outer apopores are additionally provided on cylinder, the inner cylinder is equipped with interior apopore, and the inner cylinder connects fracturing pump, which is characterized in that
The outer cylinder outer surface of upper is equipped with pocket set, is equipped with several card slots in pocket set, while being additionally provided with the snap-gauge with pocket matches.
2. horizontal well fracturing experimental provision in rammell according to claim 1, which is characterized in that the pocket set around
Outer cylinder axle center is uniformly provided with array, and the pocket numbers in all pocket sets are all the same.
3. horizontal well fracturing experimental provision in rammell according to claim 2, which is characterized in that in the pocket set
Card slot successively spaced set from top to bottom.
4. horizontal well fracturing experimental provision in rammell according to claim 2, which is characterized in that the number of the snap-gauge
Amount is identical with pocket set quantity, while snap-gauge is equipped with threaded hole.
5. horizontal well fracturing experimental provision in rammell according to claim 1 to 4, which is characterized in that the card
Plate is fixed on core holding unit by bolt and clamp nut.
6. horizontal well fracturing experimental provision in rammell according to claim 1, which is characterized in that the rock core clamping
Device is equipped at least one drainpipe in addition to each side of pit shaft mounting surface, and the drainpipe is connected with displacement pump.
7. horizontal well fracturing experimental provision in rammell according to claim 6, which is characterized in that on the drainpipe
Equipped with pressure gauge.
8. horizontal well fracturing experimental provision in rammell according to claim 1, which is characterized in that the inner cylinder is in pressure
It splits and is additionally provided with gauge line on the pipeline of pump connection, the gauge line is equipped with flowmeter and pressure gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921528659.9U CN209670960U (en) | 2019-09-16 | 2019-09-16 | A kind of rammell horizontal well fracturing experimental provision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921528659.9U CN209670960U (en) | 2019-09-16 | 2019-09-16 | A kind of rammell horizontal well fracturing experimental provision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209670960U true CN209670960U (en) | 2019-11-22 |
Family
ID=68575947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921528659.9U Expired - Fee Related CN209670960U (en) | 2019-09-16 | 2019-09-16 | A kind of rammell horizontal well fracturing experimental provision |
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| CN (1) | CN209670960U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111948029A (en) * | 2020-09-18 | 2020-11-17 | 中南大学 | Rock mass ground stress measuring method and tensile strength uniformity measuring method |
| CN113237742A (en) * | 2021-06-07 | 2021-08-10 | 中国科学院力学研究所 | Clamp holder for indoor hydraulic fracturing experiment |
| CN113250671A (en) * | 2021-06-11 | 2021-08-13 | 中国石油大学(华东) | Device and method for simulating segmental sequential fracturing or simultaneous fracturing of hot dry rock horizontal well |
-
2019
- 2019-09-16 CN CN201921528659.9U patent/CN209670960U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111948029A (en) * | 2020-09-18 | 2020-11-17 | 中南大学 | Rock mass ground stress measuring method and tensile strength uniformity measuring method |
| CN111948029B (en) * | 2020-09-18 | 2021-08-03 | 中南大学 | Rock mass ground stress measuring method and tensile strength uniformity measuring method |
| CN113237742A (en) * | 2021-06-07 | 2021-08-10 | 中国科学院力学研究所 | Clamp holder for indoor hydraulic fracturing experiment |
| CN113250671A (en) * | 2021-06-11 | 2021-08-13 | 中国石油大学(华东) | Device and method for simulating segmental sequential fracturing or simultaneous fracturing of hot dry rock horizontal well |
| CN113250671B (en) * | 2021-06-11 | 2023-03-14 | 中国石油大学(华东) | Device and method for simulating segmental sequential fracturing or simultaneous fracturing of hot dry rock horizontal well |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191122 Termination date: 20200916 |