CN109211516B - Testing device and method for hydraulic sand carrying capacity of concentric double pipes of inclined shaft - Google Patents
Testing device and method for hydraulic sand carrying capacity of concentric double pipes of inclined shaft Download PDFInfo
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- CN109211516B CN109211516B CN201710547803.2A CN201710547803A CN109211516B CN 109211516 B CN109211516 B CN 109211516B CN 201710547803 A CN201710547803 A CN 201710547803A CN 109211516 B CN109211516 B CN 109211516B
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- 239000004576 sand Substances 0.000 title claims abstract description 129
- 238000012360 testing method Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims description 15
- 239000012530 fluid Substances 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000003213 activating effect Effects 0.000 claims description 2
- 238000010998 test method Methods 0.000 claims description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims 1
- 229920005372 Plexiglas® Polymers 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
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Abstract
The invention discloses a testing device and a testing method for hydraulic sand carrying capacity of concentric double pipes of an inclined shaft, and belongs to the technical test field of petroleum drilling and completion. The testing device for the hydraulic sand carrying capacity of the concentric double pipe of the inclined shaft comprises a concentric double pipe, a pipeline, a hydraulic rod, a centrifugal pump, a sand adder, a base and a supporting plate, wherein one end of the supporting plate is rotatably connected to the base, the hydraulic rod is connected between the supporting plate and the base, the concentric double pipe is fixed to the supporting plate, the length of the hydraulic rod stretches out and draws back to enable a plurality of preset inclination angles to be formed between the concentric double pipe and the hydraulic rod, sand is injected into an annular space from the sand adder, the centrifugal pump is started to determine whether sand at each preset inclination angle flows in a full circulating mode, when the sand flows in a full circulating mode, critical sand carrying flow speed of the sand at each preset inclination angle is obtained, the hydraulic sand carrying capacity of the concentric double pipe of the shaft at different well inclination angles is determined, and on-site operation can be scientifically and effectively guided.
Description
Technical Field
The invention belongs to the technical test field of petroleum drilling and completion, and particularly relates to a device and a method for testing hydraulic sand carrying capacity of concentric double pipes of an inclined shaft.
Background
In the development process of oil and gas fields, the concentric double-tube hydraulic jet oil extraction technology has better effect in the sand production well, and provides a better solution for solving the problem of normal production of the sand production well of the sandstone oil reservoir, in particular to the sand production well with high inclination.
In the existing concentric double-tube hydraulic jet oil extraction technology, concentric double-tube hydraulic jet is mainly adopted, namely, power fluid is injected into an inner tube, mixed fluid of stratum produced fluid and power fluid is returned out of an outer tube, and meanwhile, sand produced by the stratum is carried to return out of the ground, so that the problem of sand production of an oil well of a sandstone oil reservoir is solved.
In carrying out the invention, the present inventors have found that there are at least the following problems in the prior art:
because sand grain diameters and sand output amounts of sand produced by different oil well formations are different, how to accurately master influences of different power liquid amounts and different power liquid pressures on sand carrying grain diameters and sand carrying amounts of specific oil wells and prediction of critical sand carrying flow rate are required to be measured by a test method, and a test device without inclined shaft concentric double-pipe hydraulic sand carrying capacity in the prior art cannot scientifically and effectively guide field operation.
Disclosure of Invention
In view of the above, the invention provides a device and a method for testing the hydraulic sand carrying capacity of concentric double pipes of an inclined shaft, so as to test the hydraulic sand carrying capacity of concentric double pipes of the shaft under different well angles.
Specifically, the method comprises the following technical scheme:
the testing device for the hydraulic sand carrying capacity of the concentric double pipe of the inclined shaft comprises the concentric double pipe, a pipeline, a hydraulic rod, a centrifugal pump, a sand adder, a base and a supporting plate, wherein,
the first end of the hydraulic rod and the first end of the supporting plate are rotatably connected to the base, and the other end of the hydraulic rod is connected to the supporting plate to support the supporting plate;
the concentric double tube is fixed on the supporting plate, the axis of the concentric double tube is parallel to the length direction of the supporting plate, the concentric double tube comprises an inner tube and an outer tube, the inner tube is arranged in the outer tube, and an annular space is formed between the inner tube and the outer tube;
the pipeline comprises a first pipeline and a second pipeline, wherein the first end of the first pipeline is connected with the water inlet of the centrifugal pump, and the first end of the second pipeline is connected with the water outlet of the centrifugal pump;
the upper part of the outer tube is provided with a first through hole, and the second end of the first pipeline is communicated with the annular space through the first through hole; a second through hole is formed in the lower portion of the outer tube, and the second end of the second pipeline is communicated with the annular space through the second through hole;
the outlet of the sand adder is communicated with the upper port of the annular space.
Further, the testing device further comprises a driving motor and a coupling, and the driving motor is connected with the centrifugal pump through the coupling.
Further, the driving motor, the coupling and the centrifugal pump are connected to the base.
Further, a first control valve is arranged on the first pipeline, and/or a second control valve is arranged on the second pipeline.
Further, the outer tube is a transparent organic glass tube.
Further, the inclination angle of the support plate is 0 to 90 degrees.
Further, the sand feeder comprises a sand bearing container and a sand feeding pipe which are connected, and the lower end of the sand feeding pipe is provided with the sand outlet.
Further, at least one buckle is arranged on the supporting plate and used for fixing the concentric double tube.
The method for testing the hydraulic sand carrying capacity of the concentric double pipes of the inclined shaft is characterized by comprising the following steps of:
adjusting the telescopic length of the hydraulic rod, and fixing the supporting plate on the bottom plate at a preset inclination angle each time;
injecting sand from the sand adder into the annular space and activating the centrifugal pump;
adjusting the rotation speed of the centrifugal pump, and determining whether the sand grains at each preset inclination angle flow in a circulating way;
and when the sand particles are all circulated, obtaining critical sand carrying flow speed of the sand particles at each preset inclination angle.
Further, before the adjusting the telescopic length of the hydraulic rod, the method further includes: the annular space and the pipeline are filled with power fluid.
The technical scheme provided by the embodiment of the invention has the beneficial effects that:
through rotationally connecting the one end of backup pad on the base, the hydraulic stem is connected between backup pad and base, and fix concentric double-barrelled in the backup pad and the axis is parallel with the length direction of backup pad, the length of hydraulic stem stretches out and draws back and make concentric double-barrelled can form a plurality of default inclination with the hydraulic stem between, pour into the annular space with the sand grain from the sand adder, start the centrifugal pump, and adjust the rotational speed of centrifugal pump, confirm whether the sand grain under every default inclination is whole to circulate, when the whole circulation of sand grain flows, obtain the critical sand carrying flow velocity of sand grain under every default inclination, according to the critical sand carrying flow velocity of sand grain under every default inclination, confirm the concentric double-barrelled sand carrying capacity of pit shaft under different well inclination, can scientifically and effectively instruct on-the spot operation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a testing device for hydraulic sand carrying capacity of concentric double pipes of an inclined shaft according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a concentric dual tube according to a first embodiment of the present invention;
fig. 3 is a flow chart of a method for testing hydraulic sand carrying capacity of concentric double pipes of an inclined shaft according to a second embodiment of the present invention.
Reference numerals in the drawings are respectively expressed as:
1. a base; 2. a hydraulic rod; 3. a support plate; 4. a concentric double tube; 4-1, an inner tube; 4-2, an outer tube; 4-3, annular space; 5. a first pipeline; 6. a second pipeline; 7. a sand adder; 8. a centrifugal pump; 9. a coupling; 10. a driving motor; 11. a second control valve; 12. a first control valve.
Detailed Description
In order to make the technical scheme and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
Example 1
The embodiment of the invention provides a testing device for hydraulic sand carrying capacity of a concentric double pipe of an inclined shaft, which is shown in a structural schematic diagram in fig. 1, and comprises a concentric double pipe 4, a pipeline, a hydraulic rod 2, a centrifugal pump 8, a sand adder 7, a base 1 and a supporting plate 3.
The first end of the hydraulic lever 2 and the first end of the support plate 3 are rotatably connected to the base 1, and the other end of the hydraulic lever 2 is connected to the support plate 3 for supporting the support plate 3.
The concentric double tube 4 is fixed on the support plate 3 with its axis parallel to the length direction of the support plate 3, the concentric double tube 4 includes an inner tube 4-1 and an outer tube 4-2, the inner tube 4-1 is disposed within the outer tube 4-2, and an annular space 4-3 is formed between the inner tube 4-1 and the outer tube 4-2, as shown in fig. 2.
The pipelines comprise a first pipeline 5 and a second pipeline 6, wherein the first end of the first pipeline 5 is connected with the water inlet of the centrifugal pump 8, and the first end of the second pipeline 6 is connected with the water outlet of the centrifugal pump 8.
The upper part of the outer tube 4-2 is provided with a first through hole, and the second end of the first pipeline 5 is communicated with the annular space 4-3 through the first through hole; the lower part of the outer tube 4-2 is provided with a second through hole, through which the second end of the second pipeline 6 communicates with the annular space 4-3.
The outlet of the sand adder 7 communicates with the upper port of the annular space 4-3.
Therefore, the testing device for the hydraulic sand carrying capacity of the concentric double pipe of the inclined shaft in the embodiment of the invention comprises the concentric double pipe 4, a pipeline, a hydraulic rod 2, a centrifugal pump 8, a sand adder 7, a base 1 and a supporting plate 3, wherein the concentric double pipe 4 is connected with the supporting plate 3 through the hydraulic rod 2, and is fixed on the supporting plate 3, the axis of the concentric double pipe 4 is parallel to the length direction of the supporting plate 3, so that a plurality of preset inclined angles can be formed between the concentric double pipe 4 and the hydraulic rod 2, the concentric double pipe 4 comprises an inner pipe 4-1 and an outer pipe 4-2, the inner pipe 4-1 is arranged in the outer pipe 4-2, an annular space 4-3 is formed between the inner pipe 4-1 and the outer pipe 4-2, a loop can be formed between the pipeline, the centrifugal pump 8 and the annular space 4-3, and the outlet of the sand adder 7 is communicated with the upper port of the annular space 4-3, and the testing device can be provided for the testing method for the hydraulic sand carrying capacity of the inclined concentric double pipe.
In the testing device for the hydraulic sand carrying capacity of the concentric double pipes of the inclined shaft, which is disclosed by the embodiment of the invention, the testing device further comprises a driving motor 10 and a coupler 9, wherein the driving motor 10 is connected with a centrifugal pump 8 through the coupler 9, the centrifugal pump 8 is connected with the driving motor 10 through the coupler 9, and the centrifugal pump 8 runs under the action of the driving motor 10.
In the testing device for the hydraulic sand carrying capacity of the concentric double pipes of the inclined shaft, the driving motor 10, the coupler 9 and the centrifugal pump 8 are connected to the base 1, and the relative position between the driving motor and the base 1 is kept unchanged, so that the stable operation of the testing device in the testing process is ensured.
In the testing device for hydraulic sand carrying capacity of concentric double pipes of an inclined shaft in the embodiment of the invention, a first control valve 12 is arranged on a first pipeline 5, and/or a second control valve 11 is arranged on a second pipeline 6, so as to respectively control the circulation of liquid in the first pipeline 5 and the circulation of liquid in the second pipeline 6.
In the testing device for the hydraulic sand carrying capacity of the concentric double pipes of the inclined shaft, the outer pipe 4-2 is a transparent organic glass pipe, so that the flow of the liquid and sand in the annular space 4-3 is visualized, and the flow condition of the liquid and sand in the annular space 4-3 is conveniently observed by observers.
In the testing device for the hydraulic sand carrying capacity of the concentric double pipes of the inclined shaft, provided by the embodiment of the invention, the inclination angle of the supporting plate 3 is 0-90 degrees, and the hydraulic sand carrying capacity of the concentric double pipes of the shaft with the inclination angle of 0-90 degrees can be simulated and tested.
In the testing device for the hydraulic sand carrying capacity of the concentric double pipes of the inclined shaft, provided by the embodiment of the invention, the sand adder 7 comprises a sand bearing container and a sand adding pipe which are connected, wherein the lower end of the sand adding pipe is provided with a sand outlet, and the sand bearing container is funnel-shaped.
In the testing device for hydraulic sand carrying capacity of the concentric double pipe of the inclined shaft, at least one buckle is arranged on the supporting plate 3 and used for fixing the concentric double pipe 4, so that the concentric double pipe 4 is fixed on the supporting plate 3.
In the testing device for the hydraulic sand carrying capacity of the concentric double pipes of the inclined shaft, provided by the embodiment of the invention, the hydraulic rod 2 is a telescopic compression rod, and the inclination angle of the supporting plate 3 can be changed by changing the telescopic length of the hydraulic rod 2.
In the testing device for hydraulic sand carrying capacity of the concentric double pipes of the inclined shaft, which is disclosed by the embodiment of the invention, the connector is arranged on the base 1, the connector 1 is fixed on the base 1, and the connector 1 is connected with the lower end of the concentric double pipes 4 through the connecting rod, so that the rotation on the base 1 can be realized.
In the practical use process, the first end of the hydraulic rod 2, the first end of the supporting plate 3, the first end of the concentric double tube 4, the centrifugal pump 8, the coupler 9 and the driving motor 10 are connected to the base 1, the other end of the hydraulic rod 2 is connected to the supporting plate 3 to support the supporting plate 3, the concentric double tube 4 is fixed on the supporting plate 3, the axis is parallel to the length direction of the supporting plate 3, the first pipeline, the second pipeline, the centrifugal pump 8 and the concentric double tube 4 are connected, a loop can be formed among the first pipeline, the second pipeline, the centrifugal pump 8 and the concentric double tube 4, finally the sand adder 7 is arranged at the upper end of the annular space 4-3, and the installation of the testing device for the hydraulic power sand carrying capacity of the concentric double tube of the inclined shaft is completed.
Example two
The embodiment of the invention provides a method for testing hydraulic sand carrying capacity of concentric double pipes of an inclined shaft, which is shown in a flow chart of fig. 3 and specifically comprises the following steps:
step 101: the telescopic length of the hydraulic rod is adjusted, and the supporting plate is fixed on the bottom plate at a preset inclination angle each time.
Specifically, before this step, the annular space and the pipeline need to be filled with the power fluid, so that the loop formed by the first pipeline, the second pipeline, the centrifugal pump and the annular space of the concentric double pipe is filled with the fluid, and then the telescopic length of the hydraulic rod can be adjusted multiple times, and the support plate is fixed on the bottom plate at a preset inclination angle each time, so that the preset inclination angle can be 90 degrees or 75 degrees or 60 degrees or 45 degrees or 30 degrees or 15 degrees or 0 degrees.
Step 102: sand is injected from the sand adder into the annular space and the centrifugal pump is started.
Specifically, stratum produced sand with preset grain size (such as fine sand with grain size of 0.1 mm) is selected as a sample, the stratum produced sand is injected into the annular space from the sand adder, the driving motor is started, the driving motor drives the centrifugal pump through driving the coupler, and the centrifugal pump is started.
The particle diameter range of the preset particle diameter is 0.1-0.5 mm.
Step 103: the rotational speed of the centrifugal pump is adjusted to determine whether the sand particles at each preset inclination angle are all circulated.
Specifically, at each preset inclination angle, the centrifugal pump is started respectively, so that the initial flow rate of fluid and sand in a loop formed by the first pipeline, the second pipeline, the centrifugal pump and the annular space of the concentric double pipes is 0.01m/s, the rotating speed of the centrifugal pump is gradually adjusted, the initial flow rate of fluid and sand in the loop is gradually increased, whether all sand in the annular space circularly flows or not is observed through the outer transparent glass pipe, and whether sand is sunk to the bottom of the annular space or not is judged.
Step 104: when the sand particles are all circulated, a critical sand carrying flow velocity of the sand particles at each preset inclination angle is obtained.
In the step, observing the condition of sand circulation flow under a preset inclination angle, and measuring the movement speed of the sand at the moment when all the sand in the annular space circulate, namely the critical sand carrying flow speed of the sand, so as to obtain the critical sand carrying flow speeds of a plurality of groups of sand.
And determining the hydraulic sand carrying capacity of the inclined well under different inclination angles according to the critical sand carrying flow speed of each group of sand grains.
According to the embodiment, one end of the supporting plate is rotatably connected to the base, the hydraulic rod is connected between the supporting plate and the base, the concentric double tube is fixed on the supporting plate, the axis is parallel to the length direction of the supporting plate, the length of the hydraulic rod stretches to enable the concentric double tube to form a plurality of preset inclination angles with the hydraulic rod, sand grains are injected into the annular space from the sand adder, the centrifugal pump is started, the rotating speed of the centrifugal pump is regulated, whether all sand grains at each preset inclination angle circularly flow or not is determined, when all sand grains circularly flow, the critical sand carrying flow speed of the sand grains at each preset inclination angle is obtained, and the hydraulic capacity of the concentric double tube of the shaft under different well inclination angles is determined according to the critical sand carrying flow speed of the sand grains at each preset inclination angle, so that field operation can be scientifically and effectively guided.
The foregoing description is only for the convenience of those skilled in the art to understand the technical solution of the present invention, and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A testing device for hydraulic sand carrying capacity of concentric double pipes of an inclined shaft is characterized by comprising concentric double pipes, a pipeline, a hydraulic rod, a centrifugal pump, a sand adder, a base and a supporting plate, wherein,
the first end of the hydraulic rod and the first end of the supporting plate are rotatably connected to the base, and the other end of the hydraulic rod is connected to the supporting plate to support the supporting plate;
the concentric double tube is fixed on the supporting plate, the axis of the concentric double tube is parallel to the length direction of the supporting plate, the concentric double tube comprises an inner tube and an outer tube, the inner tube is arranged in the outer tube, and an annular space is formed between the inner tube and the outer tube;
the pipeline comprises a first pipeline and a second pipeline, wherein the first end of the first pipeline is connected with the water inlet of the centrifugal pump, and the first end of the second pipeline is connected with the water outlet of the centrifugal pump;
the upper part of the outer tube is provided with a first through hole, and the second end of the first pipeline is communicated with the annular space through the first through hole; a second through hole is formed in the lower portion of the outer tube, and the second end of the second pipeline is communicated with the annular space through the second through hole;
the outlet of the sand feeder is communicated with the upper port of the annular space;
the base is provided with a connector, and the connector is connected with the lower end of the concentric double tube through a connecting rod.
2. The test device of claim 1, further comprising a drive motor and a coupling, wherein the drive motor and the centrifugal pump are coupled by the coupling.
3. The test device of claim 2, wherein the drive motor, the coupling, and the centrifugal pump are coupled to the base.
4. The test device according to claim 1, wherein a first control valve is provided on the first line and/or a second control valve is provided on the second line.
5. The test device of claim 1, wherein the outer tube is a transparent plexiglass tube.
6. The test device of claim 1, wherein the support plate is inclined at an angle of 0-90 °.
7. The test device of claim 1, wherein the sand feeder comprises a sand container and a sand feeding pipe connected with each other, and the outlet is formed in the lower end of the sand feeding pipe.
8. The test device according to claim 1, wherein at least one catch is provided on the support plate, the catch being used for fixing the concentric double tube.
9. A method for testing the hydraulic sand carrying capacity of a concentric double pipe of an inclined shaft, which is characterized in that the device for testing the hydraulic sand carrying capacity of the concentric double pipe of the inclined shaft according to any one of claims 1 to 8 is applied, and the method comprises the following steps:
adjusting the telescopic length of the hydraulic rod, and fixing the supporting plate on the base at a preset inclination angle each time;
injecting sand from the sand adder into the annular space and activating the centrifugal pump;
adjusting the rotation speed of the centrifugal pump, and determining whether the sand grains at each preset inclination angle flow in a circulating way;
and when the sand particles are all circulated, obtaining critical sand carrying flow speed of the sand particles at each preset inclination angle.
10. The method of testing according to claim 9, wherein prior to said adjusting the telescoping length of the hydraulic stem, the method further comprises: the annular space and the pipeline are filled with power fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710547803.2A CN109211516B (en) | 2017-07-06 | 2017-07-06 | Testing device and method for hydraulic sand carrying capacity of concentric double pipes of inclined shaft |
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| CN201710547803.2A CN109211516B (en) | 2017-07-06 | 2017-07-06 | Testing device and method for hydraulic sand carrying capacity of concentric double pipes of inclined shaft |
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| CN109211516B true CN109211516B (en) | 2024-03-26 |
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| CN113628525A (en) * | 2021-09-17 | 2021-11-09 | 西南石油大学 | Device and method for simulating rock carrying of reverse circulation eccentric flow field of gas drilling |
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