CN207073409U - A kind of gas reservoir inhomogeneous plane water enchroachment (invasion) analogue experiment installation - Google Patents
A kind of gas reservoir inhomogeneous plane water enchroachment (invasion) analogue experiment installation Download PDFInfo
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- CN207073409U CN207073409U CN201721031464.4U CN201721031464U CN207073409U CN 207073409 U CN207073409 U CN 207073409U CN 201721031464 U CN201721031464 U CN 201721031464U CN 207073409 U CN207073409 U CN 207073409U
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- water
- invasion
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- sand
- enchroachment
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Abstract
The utility model belongs to simulating experiment technique field, discloses a kind of gas reservoir inhomogeneous plane water enchroachment (invasion) analogue experiment installation, is provided with：Back-up sand casing；The bottom of the back-up sand casing is provided with into water screen casing；Two steam vents are provided with the top of the back-up sand casing.The utility model utilizes transparent back-up sand casing, simulates tilted stratum plane water drive；Change back-up sand granularity and the ratio control physical property of cement；Utilize bottom water inlet screen casing analog constant side water；Utilize top vent simulated production well, a whole set of analogue means by visual observation and flow measurement mode, can realize to homogenously or inhomogenously, Different Strata angle of inclination, different reservoir physical property, different edge water drive energy, the water enchroachment (invasion) process simulation under different gas production strength conditions.
Description
Technical field
The utility model belongs to simulating experiment technique field, more particularly to a kind of gas reservoir inhomogeneous plane water enchroachment (invasion) simulated experiment
Device.
Background technology
At present, the simulation for formation plane water drive process surveys saturation degree method using water power analog simulation, indirect pressure measurement more.
Three-dimensional physical simulation technology is according to electrode measuring, using double compression molding techniques and resistance to oxidation, corrosion resistant High-tech Material
Manufacture can measure the probe of saturation degree change.Measurement probe measurement scope is demarcated, establishes the electricity of different probe
The resistivity relation of resistance and solution.Saturation degree test system includes model, displacement pump, intermediate receptacle, profit and is automatically separated meter
Measure instrument, differential pressure pickup, A/D cards, numbered card, electric bridge, saturation degree measurement probe, computer and Survey Software.The test of system
Data are reliable, and precision is higher.The profit volume flow measured in real time using Buckley-Leverett equations and exit end face, meter
Calculate different experiments saturated oils to change with time with water drive oil procedure exit end face saturation degree, by the full of outlet port measurement
Compared with degree and the change of water drive process saturation degree and the change of theoretical calculation end face saturation degree.However, due to experimental model
Far smaller than actual formation, test point limited amount, serious, poor, the tested person of test data regularity is influenceed by anisotropism
The systematic error of flow influences serious, it tends to be difficult to obtains conformance law.
In summary, the problem of prior art is present be：Experimentation can not be observed directly, and test result is by systematic error
Have a great influence, experiment it is repeatable poor, experiment be difficult to realize satisfactory results.
The content of the invention
The problem of existing for prior art, the utility model provide a kind of gas reservoir inhomogeneous plane water enchroachment (invasion) simulated experiment
Device.
The utility model is achieved in that a kind of gas reservoir inhomogeneous plane water enchroachment (invasion) analogue experiment installation, and the gas reservoir is non-
Uniform planar water enchroachment (invasion) analogue experiment installation is provided with：
Back-up sand casing；
The bottom of the back-up sand casing has been inserted and fixed into water screen casing；
Nipple is inserted and fixed at the top of the back-up sand casing and connects two steam vents.
The advantages of the utility model and good effect are：Using transparent back-up sand casing, tilted stratum plane water drive is simulated；Change
Become back-up sand granularity and the ratio control physical property of cement；Utilize bottom water inlet screen casing analog constant side water；Utilize top vent
Casement intends producing well, a whole set of analogue means by visual observation and flow measurement mode, can realize to homogenously or inhomogenously,
Water enchroachment (invasion) process mould under Different Strata angle of inclination, different reservoir physical property, different edge water drive energy, different gas production strength conditions
Intend.
Brief description of the drawings
Fig. 1 is the structural representation for the gas reservoir inhomogeneous plane water enchroachment (invasion) analogue experiment installation that the utility model embodiment provides
Figure；
In figure：1st, back-up sand casing；2nd, steam vent；3rd, water inlet screen casing.
Embodiment
For invention, features and effects of the present utility model can be further appreciated that, following examples are hereby enumerated, and coordinate
Accompanying drawing describes in detail as follows.
Structure of the present utility model is explained in detail below in conjunction with the accompanying drawings.
As shown in figure 1, the gas reservoir inhomogeneous plane water enchroachment (invasion) analogue experiment installation that the utility model embodiment provides includes：Fill out
Sandbox body 1, steam vent 2, water inlet screen casing 3.
The bottom of back-up sand casing 1 has been inserted and fixed into water screen casing 3；The top of back-up sand casing 1 is inserted and fixed nipple
Connect two steam vents 2.Back-up sand casing 1 is placed with ground in inclination angle；The top of back-up sand casing 1 is provided with two steam vents 2, mould
Intend producing well.
Intake screen casing 3 long 600mm, aperture 20mm, perforate segment length 400mm, aperture 3mm, pitch-row 5mm on pipe.
The aperture 20mm of steam vent 2, the hole heart is away from border 20mm.
The storage layer of back-up sand casing 1 passes through back-up sand granularity and the permeability of the rate control sandpack column of cement；Adopt
With homogeneous back-up sand program simulation homogeneous formation, the influence of physical property opposite side water progradation is simulated using different back-up sand granularities.
Back-up sand casing 1 long 400mm, wide 400mm, high 40mm of the present utility model, simulation tilt floor plane water drive, passed through
Change back-up sand granularity and the ratio control physical property of cement, the energy of side water water drive is provided using screen casing 3 of intaking；Utilize exhaust
The simulated production well of hole 2, to judge the simulation of gas reservoir inhomogeneous plane water enchroachment (invasion) process.
The application effect of the present invention is explained in detail with reference to experiment.
1st, the physical property origin cause of formation experimental study of non-homogeneous water enchroachment (invasion) is as follows：
(1) experimental method
Back-up sand case is divided into two parts, 100 mesh and 40 mesh are respectively adopted in load bearing solids, then are equipped with fine silt and cement, simulation
Water enchroachment (invasion) process variances during reservoir plane permeability grade 2-3.
(2) Data Data is analyzed
The position for recording different time water enchroachment (invasion) is as shown in table 1.
The non-homogeneous water enchroachment (invasion) distance test data of table 1
Experimental data shows：
1) physical property is poorer, and under same pressure differential and time conditions, water enchroachment (invasion) distance is nearer；
2) as the continuation of water enchroachment (invasion), water enchroachment (invasion) speed are remarkably decreased.
(3) experiment understanding
Experiment shows that physical difference result in the difference of water enchroachment (invasion) speed, and physical property is poorer, and water enchroachment (invasion) speed is slower.
Air water mobility in Sebei Gas Field reservoir differ hundreds times thousands of times, after water enchroachment (invasion) occurs, the filtrational resistance of water enchroachment (invasion) band
It will increased dramatically, the force benefits in side pool can be significantly attenuated.So water enchroachment (invasion) band is wider, water enchroachment (invasion) speed slow down it is more, from this
From the point of view of, significant otherness side water water enchroachment (invasion) can't occur for heterogeneous reservoir, even if congenital permeability grade result in water enchroachment (invasion)
Heterogeneity, then all can because of water mobility be far below gas mobility, water enchroachment (invasion) band can all reach unanimity, and overall water enchroachment (invasion)
Trend can be also gradually reduced.
It is theoretical with reference to Properties of Water-gas Flowing Through Porous Media by this experiment, it is believed that the side water water drive driven straight in is not present in Sebei Gas Field
Predominant pathway, and can only have the advantage water enchroachment (invasion) band caused by congenital permeability is higher, match somebody with somebody plus these hypertonic band gas wells
Production is higher, and the flowing pressure gradient of side pool and gas range is larger, therefore the water enchroachment (invasion) speed in these regions can be relatively fast.
Water outlet gas well of the gas reservoir high-order bit away from side water, its water source should be the water of local water layer in layer.
2nd, the hydrodynamic force origin cause of formation experimental study of non-homogeneous water enchroachment (invasion) is as follows：
(1) experimental method
Using the side water of homogeneous back-up sand scheme and constant pressure, gas recovery well closing will be wherein simulated flatly, only be retained flatly
Gas well is vented, with the non-homogeneous water enchroachment (invasion) process of plane caused by this simulation water power difference；
(2) Data Data is analyzed
The position of different time water enchroachment (invasion) is recorded, as shown in table 2.
Non-homogeneous water enchroachment (invasion) distance test data caused by the hydrodynamic force difference of table 2
Experimental data shows：
1) influence and distance dependent of the hydrodynamic force difference to water enchroachment (invasion) speed, nearly well band radial direction fluidised form proportion is larger, pressure
Power gradient is larger, so nearly well band water enchroachment (invasion) speed, more remote water enchroachment (invasion) speed are slower；
2) water enchroachment (invasion) distance is longer, and the energy of water enchroachment (invasion) band consumption is more, and water enchroachment (invasion) leading edge gradually becomes uniform.
(3) experiment understanding
1) water enchroachment (invasion) of gas reservoir is the process that high viscous water drive replaces low viscous gas, is altered in the absence of sticky onlap into water enchroachment (invasion) process is main
It is controlled by formation pressure gradient and its distribution, while also depends on the distribution of congenital physical property；
2) reservoir rock has hydrophily, and capillary force is the power of water drive gas in reservoir rock pore network, and aperture is smaller,
Hollow billet power is bigger, and this phenomenon balances the phenomenon that aperture is smaller, filtrational resistance is bigger, water drive gas velocity degree is slower, is advantageous to
The waterflood front of equilibrium is formed in heterogeneous reservoir；
3) the leading edge waterline form of water drive gas depends primarily on formation pressure gradient in plane, and gas production intensity positive correlation,
Distance to gas well is nearer, higher with producing, then water drive velocity is faster, and physical property is poorer, water enchroachment (invasion) band is wider, then water enchroachment (invasion) speed is slower.
Described above is only to preferred embodiment of the present utility model, not the utility model is made any formal
Limitation, it is every according to the technical essence of the utility model to any simple modification made for any of the above embodiments, equivalent variations with
Modification, is belonged in the range of technical solutions of the utility model.
Claims (2)
- A kind of 1. gas reservoir inhomogeneous plane water enchroachment (invasion) analogue experiment installation, it is characterised in that the gas reservoir inhomogeneous plane water enchroachment (invasion) mould Draft experiment device is provided with：Back-up sand casing；The bottom of the back-up sand casing has been inserted and fixed into water screen casing；Nipple connection steam vent is inserted and fixed at the top of the back-up sand casing.
- 2. gas reservoir inhomogeneous plane water enchroachment (invasion) analogue experiment installation as claimed in claim 1, it is characterised in that the back-up sand casing Top be inserted and fixed nipple connect two steam vents.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721031464.4U CN207073409U (en) | 2017-08-17 | 2017-08-17 | A kind of gas reservoir inhomogeneous plane water enchroachment (invasion) analogue experiment installation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721031464.4U CN207073409U (en) | 2017-08-17 | 2017-08-17 | A kind of gas reservoir inhomogeneous plane water enchroachment (invasion) analogue experiment installation |
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| CN207073409U true CN207073409U (en) | 2018-03-06 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519156A (en) * | 2018-11-01 | 2019-03-26 | 中海石油(中国)有限公司上海分公司 | A kind of side water sand rock gas reservoir water drive section model Seepage Experiment method |
| CN110984974A (en) * | 2019-11-29 | 2020-04-10 | 中国石油集团川庆钻探工程有限公司 | Method for determining reasonable gas production speed of water-gas reservoir based on water invasion speed |
| CN111119874A (en) * | 2018-10-31 | 2020-05-08 | 中国石油化工股份有限公司 | Combined type sand filling device with controllable permeability and sand filling method |
| CN113075265A (en) * | 2021-03-19 | 2021-07-06 | 西南石油大学 | Method for rapidly and quantitatively testing water invasion resistance of cement slurry |
-
2017
- 2017-08-17 CN CN201721031464.4U patent/CN207073409U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111119874A (en) * | 2018-10-31 | 2020-05-08 | 中国石油化工股份有限公司 | Combined type sand filling device with controllable permeability and sand filling method |
| CN111119874B (en) * | 2018-10-31 | 2023-09-01 | 中国石油化工股份有限公司 | Combined sand filling device with controllable permeability and sand filling method |
| CN109519156A (en) * | 2018-11-01 | 2019-03-26 | 中海石油(中国)有限公司上海分公司 | A kind of side water sand rock gas reservoir water drive section model Seepage Experiment method |
| CN109519156B (en) * | 2018-11-01 | 2020-10-02 | 中海石油(中国)有限公司上海分公司 | Seepage experiment method for side water sandstone gas reservoir water drive profile model |
| CN110984974A (en) * | 2019-11-29 | 2020-04-10 | 中国石油集团川庆钻探工程有限公司 | Method for determining reasonable gas production speed of water-gas reservoir based on water invasion speed |
| CN113075265A (en) * | 2021-03-19 | 2021-07-06 | 西南石油大学 | Method for rapidly and quantitatively testing water invasion resistance of cement slurry |
| CN113075265B (en) * | 2021-03-19 | 2022-02-08 | 西南石油大学 | Method for rapidly and quantitatively testing water invasion resistance of cement slurry |
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Granted publication date: 20180306 Termination date: 20200817 |