CN207813981U - The test system that sand wears centrifugal pump in hydrate recovery process - Google Patents
The test system that sand wears centrifugal pump in hydrate recovery process Download PDFInfo
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- CN207813981U CN207813981U CN201721648630.5U CN201721648630U CN207813981U CN 207813981 U CN207813981 U CN 207813981U CN 201721648630 U CN201721648630 U CN 201721648630U CN 207813981 U CN207813981 U CN 207813981U
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- sand
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- centrifugal pump
- pit shaft
- hydrate
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Abstract
The utility model is related to ocean gas hydrate development of resources field of engineering technology, more particularly to the test system that sand in a kind of hydrate recovery process wears centrifugal pump, including groundwater simulation pit shaft, water tank, water sand blending bin, sand distributor and water sand separator.The system is by establishing groundwater simulation pit shaft, a certain amount of sand and water are injected to pit shaft, pit shaft Zhong Shui, sand two-phase mixtures fluid state in simulating hydrate recovery process, and then under the conditions of hydrate exploits pit shaft, it tests in the case of different sand grains diameters, different sand concentration and different flow, for sand to centrifugal pump impeller and the degree of wear for leading shell, the design that artificial lift centrifugal pump is exploited for hydrate provides foundation.
Description
Technical field
The utility model is related to ocean gas hydrate development of resources field of engineering technology, and in particular to a kind of hydrate
The test system that sand wears centrifugal pump in recovery process.
Background technology
Gas hydrates are a kind of potential energy, are had a very wide distribution because it has, and energy density is high, and stock number is huge
The characteristics of, countries in the world put into a large amount of fund and manpower carries out the research of natural gas hydrate resources exploitation.
The exploitation of hydrate needs the fluid lift by way of artificial lift by shaft bottom to well head, most common lifting
Mode is the latent centrifugal pump of electricity.The decomposition of hydrate will produce methane gas and water in recovery process, since reservoir degree of consolidation is poor, with
The stress changes of pressure reduction and reservoir, the sand in reservoir can be flowed into fluid in pit shaft, and largely shaking out can cause
Pit shaft sand buries.2002,2007 and 2008, the hydrate three times that Canadian MacKenzie delta permafrost carries out
Pilot production is forced to terminate because pit shaft largely shakes out；2013, Japan Nankai Trough implement hydrate pilot production also because shake out by
Compel to terminate.The exploitation of hydrate is required to take sand control measure, but all sand control measures can not possibly entirely prevent sand to enter
Pit shaft.Therefore, inherently the sand containing different-grain diameter, various concentration, the presence of these sand can be ground in the fluid of centrifugal pump lifting
It damages the impeller of centrifugal pump and leads shell, influence performance and the service life of pump.
For the artificial lift of hydrate exploitation, abrasion journey of the quantitative determination sand to centrifugal pump critical component is needed
Degree, to select corresponding safeguard procedures to extend the service life of hydrate exploitation artificial lift pump.At present about sand to centrifugal pump leaf
The research of foot wheel abrasion primarily focuses on the movement locus of the analysis and sand particle of pump housing flow field in the pump housing." water containing sand to from
Experimental study (yellow Jiande, Zhang Kuiting Engineering Thermophysics journals, 1999, V20 (4) of heart pump damage in impeller:448-452.) " one
Text discloses a kind of solid-liquid two-phase flow water pump experimental bench, when can carry out conveying water containing sand, the test that sand wears impeller of pump, but should
Device main function is the qualitative position for determining blade wear and the degree of wear, can not carry out quantitative test.
Therefore, the design that artificial lift pumps is exploited to meet hydrate, it is ensured that efficient, the trouble free service of centrifugal pump, this reality
With it is novel disclose it is a kind of can simulating hydrate exploit true wellbore environment and liquid fixed double phase flow environment, measurement sand is to centrifugation
Pump the test system of the degree of wear and corresponding test method.
Utility model content
The position that the utility model wear centrifugal blade for determination sand of the current experimental provision without standard measure with
The degree of wear is proposed the test system that sand wears centrifugal pump in a kind of hydrate recovery process, can be exploited with simulating hydrate
Water sand environment in true pit shaft is tested in the case of different sand grains diameters, different sand concentration and different flow, and sand is to centrifugal pump impeller
With the degree of wear for leading shell, the determination impeller quantitative with the method for dimensional measurement and the degree of wear for leading shell, the survey of weighing are utilized
Test system can also be tested for a long time, simulate the real work situation of centrifugal pump.
To achieve the goals above, the utility model adopts the following technical solution：Sand is to centrifugation in hydrate recovery process
Pump the test system of abrasion, including groundwater simulation pit shaft, water tank, water sand blending bin, sand distributor and water sand separator；The water
Case is connected to water sand blending bin by pipeline, and pipeline pump and first are provided on the pipeline between the water tank and water sand blending bin
Flowmeter；The sand distributor is connected to water sand blending bin, the pipe between the sand distributor and water sand blending bin by pipeline
The first ball valve is provided on road；The water sand blending bin is injected pipeline by water sand and is led in groundwater simulation pit shaft, the water note
Enter to be provided with Pulp pump, second flowmeter and the second ball valve on pipeline；The bottom of the groundwater simulation pit shaft is provided with centrifugal pump,
The outlet of centrifugal pump is connected to the water sand separator of setting on the ground by oil pipe, and third flow is provided on the oil pipe
Meter.
Further, the oil pipe, on be provided with pressure reducing valve.
Further, pipeline outlet is injected in the centrifugal pump, the position being arranged in groundwater simulation pit shaft higher than water sand.
Further, the water sand separator is connected by reflux line with water tank and sand distributor respectively.
The test system that sand wears centrifugal pump in the hydrate recovery process of the utility model, by groundwater simulation well
Injection water and sand simulating hydrate exploit water sand admixture in pit shaft in cylinder, realize the actual condition of centrifugal pump；Pass through centrifugation
Pump gives rise to the water on ground and sand comes back in water tank and sand distributor, realizes the long-time test of self-loopa；By using
It weighs and quantitatively determines sand to impeller and the degree of wear for leading shell with the mode of dimensional measurement.
This system injects a certain amount of sand to pit shaft and water, simulating hydrate was exploited by establishing groundwater simulation pit shaft
Pit shaft Zhong Shui, sand two-phase mixtures fluid state in journey, and then under the conditions of hydrate exploits pit shaft, test different sand grains diameters, no
In the case of sand concentration and different flow, sand exploits artificial lift to centrifugal pump impeller and the degree of wear for leading shell, for hydrate
The design of centrifugal pump provides foundation.
Description of the drawings
Fig. 1 is the structure composition schematic diagram of the system of the utility model；
In above-mentioned figure：1- groundwater simulation pit shafts；2- water tanks；3- pipeline pumps；4- first flowmeters；5- sand distributors；6-
One ball valve；7- water sand blending bins；8- Pulp pumps；9- second flowmeters；The second ball valves of 10-；11- water sands inject pipeline；12- is centrifuged
Pump；13- oil pipes；14- safety valves；15- third flowmeters；16- water sand separators.
Specific implementation mode
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only explaining this
Utility model is not used to limit the utility model.
Embodiment 1
Embodiment 1 provides the test system that sand wears centrifugal pump in a kind of hydrate recovery process, underground as shown in Figure 1
Simulation wellbore hole 1, water tank 2, water sand blending bin 7, sand distributor 5 and water sand separator 16.
The water tank 2 is connected to water sand blending bin 7 by pipeline, on the pipeline between the water tank 2 and water sand blending bin 7
It is provided with pipeline pump 3 and first flowmeter 4, wherein pipeline pump 3 is for injecting water into water sand blending bin 7, first flowmeter
4 injection rate for measuring water.
The sand distributor 5 is connected to water sand blending bin 7 by pipeline, between the sand distributor 5 and water sand blending bin 7
Pipeline on be provided with the first ball valve 6, wherein the first ball valve 6 is used to adjust the injection rate of sand.
The water sand blending bin 7 is injected pipeline 11 by water sand and is led in groundwater simulation pit shaft 1, and the water sand injects pipeline
Pulp pump 8, second flowmeter 9 and the second ball valve 10 are provided on 11, wherein Pulp pump 8 is used to inject ground by water sand mixture
In Imitating pit shaft 1, second flowmeter 9 is used to measure the injection rate of water sand mixture, and the second ball valve 10 is mixed for adjusting water sand
Close the injection rate of object.
The bottom of the groundwater simulation pit shaft 1 is provided with centrifugal pump 12, and in groundwater simulation pit shaft 1, centrifugal pump 12 is arranged
Position higher than water sand injection pipeline 11 outlet.
The outlet of centrifugal pump 12 is connected to setting water sand separator 16 on the ground by oil pipe 13, on the oil pipe 13
It is provided with third flowmeter 15 and pressure reducing valve 14, wherein third flowmeter 15 is used to measure the injection rate of water sand mixture, decompression
The setting of valve 14 is in order to which system pressure is reduced to 2.5MPa or less, it is ensured that water sand separator 16 and the 4th flowmeter 14 are just
Often work.
The water sand separator 16 is connected by reflux line with water tank 2 and sand distributor 5 respectively, the water and sand weight of separation
It newly enters in water tank 2 and sand distributor 5, so that whole system is become a cycle, long-time measurement can be carried out.
The test system of the present embodiment can realize in true hydrate recovery process, the quantitative survey that sand wears centrifugal pump
Amount.This system injects a certain amount of sand and water by establishing groundwater simulation pit shaft, to pit shaft, well in simulating hydrate recovery process
Cylinder Zhong Shui, sand two-phase mixtures fluid state, and then under the conditions of hydrate exploits pit shaft, it is dense to test different sand grains diameters, different sand
In the case of degree and different flow, sand exploits artificial lift centrifugal pump to centrifugal pump impeller and the degree of wear for leading shell, for hydrate
Design provide foundation.
Embodiment 2
The device of corresponding embodiment 1, embodiment 2 provide the test that sand wears centrifugal pump in a kind of hydrate recovery process
Method includes the following steps：
S1. it measures centrifugal pump impeller before test and leads the quality of shell, lead the internal diameter of shell balance hole, it then will be under centrifugal pump
Enter into groundwater simulation pit shaft；
S2. the topped up with water into water tank fills it up with quartz sand in sand distributor, after sand and water are mixed in water sand mixer,
It is injected into groundwater simulation pit shaft；
Specially：Water is filled in into water tank 2, quartz sand is filled it up in sand distributor 5, opens pipeline pump 3 and the first ball valve 6
Water and sand are injected into water sand blending bin 7, open Pulp pump 8 and the second ball valve 10 injects water sand into groundwater simulation pit shaft 1 and mixes
Close object.
S3. centrifugal pump is opened, water sand mixture is given rise into ground, is detached by water sand separator, water and sand return respectively
Recovery tank and sand distributor；
Specially：It opens centrifugal pump 12 and the water sand mixture in groundwater simulation pit shaft 1 is given rise into ground, pass through third stream
Gauge 15 measures the flow of water sand mixture, and after water sand mixture enters water sand separator 16, the water and sand of separation are by returning
Flow tube road has respectively entered in water tank 2 and sand distributor 5, forms a loop test system；
S4. it continues for some time, takes out centrifugal pump, to the impeller of centrifugal pump and lead shell and weigh, to leading the balance of shell
Hole internal diameter measures；Wherein, duration is 100 hours；
S5. tripping in centrifugal pump, repetition step S2-S4 obtain Impeller Mass, lead chitin amount and lead shell balance hole internal diameter again
Versus time curve；In the present embodiment, it is repeated 4 times step S2-S4；
S6. change sand injection allocation ratio, repeat step S2-S5, obtain different sand contents to Impeller Mass, lead chitin amount and
Lead shell balance hole internal diameter versus time curve；
S7. the different sand of grain size is added in sand distributor, repeats step S2-S5, tests the sand of different-grain diameter to impeller
Quality leads chitin amount and leads shell balance hole internal diameter versus time curve；
S8. the discharge capacity for adjusting centrifugal pump, repeats step S2-S5, measures Impeller Mass under different displacements, leads chitin amount and lead
Shell balance hole internal diameter versus time curve.
In order to ensure the accuracy measured, the impeller of centrifugal pump is claimed using high accuracy balance in above-mentioned steps
Weight, the variation of shell balance hole internal diameter is led using vernier caliper measurement.
The test method of the present embodiment can realize in hydrate recovery process, the quantitative measurment that sand wears centrifugal pump.It is logical
It crosses to pit shaft and injects a certain amount of sand and water, pit shaft Zhong Shui, sand two-phase mixtures fluid state in simulating hydrate recovery process, into
And under the conditions of hydrate exploits pit shaft, it tests in the case of different sand grains diameters, different sand concentration and different flow, sand is to centrifugal pump
Impeller and the degree of wear for leading shell, the design that artificial lift centrifugal pump is exploited for hydrate provide foundation.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of the appended claims for the utility model.
Claims (4)
1. the test system that sand wears centrifugal pump in hydrate recovery process, which is characterized in that including groundwater simulation pit shaft
(1), water tank (2), water sand blending bin (7), sand distributor (5) and water sand separator (16)；The water tank (2) is connected by pipeline
To water sand blending bin (7), pipeline pump (3) and first-class is provided on the pipeline between the water tank (2) and water sand blending bin (7)
Gauge (4)；The sand distributor (5) is connected to water sand blending bin (7), the sand distributor (5) and water sand mixing by pipeline
The first ball valve (6) is provided on pipeline between case (7)；The water sand blending bin (7) is injected pipeline (11) by water sand and is led to
In groundwater simulation pit shaft (1), Pulp pump (8), second flowmeter (9) and the second ball are provided on the water sand injection pipeline (11)
Valve (10)；The bottom of the groundwater simulation pit shaft (1) is provided with centrifugal pump (17), and the outlet of centrifugal pump (12) passes through oil pipe (13)
It is connected to the water sand separator (16) of setting on the ground, third flowmeter (15) is provided on the oil pipe (13).
2. the test system that sand wears centrifugal pump in hydrate recovery process according to claim 1, it is characterised in that：
It is provided with pressure reducing valve (14) on the oil pipe (13).
3. the test system that sand wears centrifugal pump in hydrate recovery process according to claim 1, it is characterised in that：
The position that the centrifugal pump (12) is arranged in groundwater simulation pit shaft (1) is exported higher than water sand injection pipeline (11).
4. the test system that sand wears centrifugal pump in hydrate recovery process according to claim 1, it is characterised in that：
The water sand separator (16) is connected by reflux line with water tank (2) and sand distributor (5) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721648630.5U CN207813981U (en) | 2017-11-30 | 2017-11-30 | The test system that sand wears centrifugal pump in hydrate recovery process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721648630.5U CN207813981U (en) | 2017-11-30 | 2017-11-30 | The test system that sand wears centrifugal pump in hydrate recovery process |
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| CN207813981U true CN207813981U (en) | 2018-09-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035887A (en) * | 2017-11-30 | 2018-05-15 | 青岛海洋地质研究所 | The test system and method that sand wears centrifugal pump in hydrate recovery process |
| CN111997601A (en) * | 2020-09-27 | 2020-11-27 | 西南石油大学 | Device and method for measuring influence of rock debris content on natural gas hydrate drilling erosion |
| CN112081574A (en) * | 2020-09-27 | 2020-12-15 | 西南石油大学 | Device and method for measuring influence of microbend of natural gas hydrate drilling pipeline on flow field |
-
2017
- 2017-11-30 CN CN201721648630.5U patent/CN207813981U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035887A (en) * | 2017-11-30 | 2018-05-15 | 青岛海洋地质研究所 | The test system and method that sand wears centrifugal pump in hydrate recovery process |
| CN108035887B (en) * | 2017-11-30 | 2023-08-08 | 青岛海洋地质研究所 | System and method for testing abrasion of sand on centrifugal pump in hydrate exploitation process |
| CN111997601A (en) * | 2020-09-27 | 2020-11-27 | 西南石油大学 | Device and method for measuring influence of rock debris content on natural gas hydrate drilling erosion |
| CN112081574A (en) * | 2020-09-27 | 2020-12-15 | 西南石油大学 | Device and method for measuring influence of microbend of natural gas hydrate drilling pipeline on flow field |
| CN111997601B (en) * | 2020-09-27 | 2022-07-15 | 西南石油大学 | Device and method for measuring influence of rock debris content on natural gas hydrate drilling erosion |
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