CN205689204U - Large scale fracture-cavity type carbonate well testing experimental provision - Google Patents
Large scale fracture-cavity type carbonate well testing experimental provision Download PDFInfo
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- CN205689204U CN205689204U CN201620477914.1U CN201620477914U CN205689204U CN 205689204 U CN205689204 U CN 205689204U CN 201620477914 U CN201620477914 U CN 201620477914U CN 205689204 U CN205689204 U CN 205689204U
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Abstract
This utility model provides a kind of indoor well testing experimental provision and experimental technique, is mainly made up of results of fracture simulation structure, solution cavity structure, booster pump, air compressor, constant temperature system, pressure capsule system, metering system and computer.Wherein pressure transducer connect respectively with shaft bottom and solution cavity bottom, solution cavity structure and results of fracture simulation structure are placed in constant temperature system, can truly reflect field measurement well testing condition.Results of fracture simulation structure with the sand grains of filling different meshes, can be simulated the crack of different permeability, hole solution cavity structure not filling, simulate large scale solution cavity.This utility model principle is reliable, apparatus structure is simple, simple to operate, safety, can true simulated formation environment, determine different reservoir temperature and pressure condition, the well-test curve feature of different seam holes model, provides rational experimental data to large scale fracture-cavity type carbonate reservoir situation and seam hole scale.
Description
Technical field
Patent of the present invention belongs to fracture-cavity type carbonate well testing experiment category, complicated for large scale fracture-cavity type carbonate
Well-test curve rule under the link relation of seam hole determines device and method.
Background technology
Well testing research is premise and the foundation setting up well test model.Fracture-cavity type carbonate oil-gas reservoir reservoir space is various,
Solution cavity, Size of Crack as the effective reservoir space of reservoir differ, and differ greatly, and have an obvious multiple dimensioned property, and solution cavity,
Fractue spacing is uneven, and poor continuity, therefore fracture-cavity type carbonate oil-gas reservoir flow mechanism is extremely complex, fracture-cavity type carbonate
Oil reservoir well testing aspect, forefathers have carried out substantial amounts of research, it is proposed that various well test models and example edition curve thereof, but ore deposit
Measured curve and theoretical curve are the most often difficult to matching, need to carry out production physical simulation experiment, carry out actual reservoir feature or
The flowing law research of laboratory experiment.
In fracture-cavity type carbonate well testing field, the most substantial amounts of scholar is studied from theoretical side.One is often
On the basis of the Flow through media with double-porosity theory of rule, flow mechanism and mathematical model be concentrated mainly on slit formation medium system,
Crack-matrix dielectric system and hole-crack-matrix system aspect, relate to cave-fracture medium systematic research less.And
Explanation to cave-Fracture System, carries out calculating realizing by being greatly enhanced fracture permeabgility.Two is directly to adopt
Describe by pipe flow in hydrodynamics and the Open Channels mode of combining, but this all can not well explain that relevant oil well is opened
Send out feature.I.e. it is difficult to solve seam hole type oil-gas reservoir well testing the data obtained present regular poor feature, cause its well testing solution
Release significant difficulty all the time.Cause not well test analysis achievement accurately and reliably, the exploitation side to fracture-cavity type carbonate
Case is formulated and is added great difficulty and uncertainty.The present invention develops new experimental provision and method, by seepage flow and pipe
Stream combine simulated formation situation flowing, reaction actual formation situation the most accurately, send bright available true stratum elsewhere
In the case of fluid flowing law.
Summary of the invention
Patent of the present invention is to be solved technical problem is that the blank for prior art, it is provided that with a kind of indoor well testing
Experimental provision and using method thereof.
It is an object of the invention to provide experimental provision for large scale fracture-cavity type carbonate flowing law, well testing application,
This experimental provision principle is reliable, simple to operate, utilizes this device can react complicated Feng Dong UNICOM under formation temperature and pressure
Well testing plate under relation.
In order to reach above technical purpose, patent of the present invention provides techniques below scheme.The concrete principle of the present invention is
By the change of bottom pressure during testing well pressure build-up test, utilize pressure wave propagation in the earth formation, reaction reservoir seam
Hole feature and seam hole structure.Large scale fracture-cavity type carbonate well testing experimental determination device is mainly by results of fracture simulation structure, solution cavity
Structure, booster pump, air compressor, constant temperature system, pressure capsule system, metering system and computer composition.Described solution cavity
Structure can simulate large scale solution cavity, and in results of fracture simulation structure, the sand mo(u)ld of filling different meshes intends the crack of different permeability, institute
State solution cavity structure, results of fracture simulation structure, pressure transducer and UNICOM's pipeline to be placed in constant temperature system, can truly simulate reservoir ground
Layer temperature.
The sand of the pipeline central filler different meshes of described results of fracture simulation structure Φ 6, simulation difference infiltration after compacting
Rate crack, the screen cloth filling of results of fracture simulation structure two ends, the seam that can be changed crack by the length changing pipeline is long, changes crack
Permeability, the wide crack of simulation difference seam.The position that results of fracture simulation structure is different from solution cavity structure top and bottom connects,
Simulation difference seam hole position relationship, results of fracture simulation structure UNICOMs different from solution cavity structure situation, multiple between simulation fracture and solution cavity
Miscellaneous link relation.Described pressure capsule system uses precision to be the high-precision pressure sensor of 0.05%, the minimum sampling interval
0.1s, bottom pressure change during accurate acquisition pressure build-up test.
This experimental provision can record the well test curve chart of different seam holes structure.
Accompanying drawing explanation
Fig. 1 is inventive structure schematic diagram.
In Fig. 1: 1 air compressor；2 booster pumps；3 nitrogen cylinders；4,7,9 valve；5 solution cavity structures；6—
Results of fracture simulation structure；8 pit shafts；10 air relief valve；11 flow control valves；12 gas flowmeters；13 computers；14 dry
Case；15 pressure transducers.
Fig. 2 .1 and Fig. 2 .2 is to change solution cavity volume and the fracture length impact on well-test curve feature respectively.
Detailed description of the invention
With embodiment, this utility model is described in detail below in conjunction with the accompanying drawings.
The assay method of large scale fracture-cavity type carbonate well testing experimental program, includes step successively:
(1) preparation in crack, with vibrosieve fluvial sand filtered out different meshes sand grains, by sand pack at crack mould
Intend in structure, results of fracture simulation structure two filling screen cloth, make different permeability, the splitting of different length with nitrogen high pressure compression
Seam；
(2) room temperature often connects experimental apparatus according to experiment flow in calorstat；
(3) close valve 9, keep valve 4,7 to open, start booster pump, to seam_cavern type supercharging, be laminated with being forced into
Power, closes valve 4；
(4) system is heated, simulate true formation temperature.
(5) open valve 9, opening well and making production, after driving a well two minutes, close valve 9, carry out pressure build-up test test, often
Shaft bottom and solution cavity pressure and gas changes in flow rate, pressure buildup test 6 minutes is recorded every 0.1s.
(6) repeat steps 3-6, change fracture length and solution cavity size, do at least 6 group experiments.
The various embodiments described above are merely to illustrate this utility model, and the structure of the most each parts, connected mode etc. are all permissible
It is varied from, every equivalents carried out on the basis of technical solutions of the utility model and improvement, the most should not get rid of
Outside protection domain of the present utility model.
Claims (2)
1. the device of a large scale fracture-cavity type carbonate well testing experiment, it is characterised in that: it includes solution cavity structure, crack
Model configuration；Described solution cavity structure has intermediate receptacle to constitute, and can simulate molten by filling carbonate in various degree inside intermediate receptacle
Hole structure, described results of fracture simulation structure is made up of high pressure line back-up sand, the sand of the internal filling different meshes of pipeline, and simulation difference is oozed
The crack of rate thoroughly.Described hole-solution cavity structure is connected by pipeline with described results of fracture simulation structure, actual response formation condition
Lower fracture-cavity units structure.
2. seam hole as claimed in claim 1 construction unit, it is characterised in that: described solution cavity structure can be middle by changing
The size simulation different size large scale solution cavity of container, described results of fracture simulation structure can be simulated by changing high pressure line length
Different length crack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201620477914.1U CN205689204U (en) | 2016-05-24 | 2016-05-24 | Large scale fracture-cavity type carbonate well testing experimental provision |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620477914.1U CN205689204U (en) | 2016-05-24 | 2016-05-24 | Large scale fracture-cavity type carbonate well testing experimental provision |
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| CN205689204U true CN205689204U (en) | 2016-11-16 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106997714A (en) * | 2017-03-15 | 2017-08-01 | 西南石油大学 | A kind of fracture-cavity type carbonate fracture network flow device |
| CN107165624A (en) * | 2017-06-13 | 2017-09-15 | 西南石油大学 | Fractured-cavernous carbonate reservoir three-dimensional large scale physical model and preparation method thereof |
| CN109882149A (en) * | 2018-01-29 | 2019-06-14 | 西南石油大学 | A kind of experimental provision and method for simulating fracture-cavity type carbonate gas condensate reservoir Production development |
| CN112282741A (en) * | 2019-07-24 | 2021-01-29 | 中国石油化工股份有限公司 | Target reservoir well testing analysis method, computer storage medium and computer equipment |
-
2016
- 2016-05-24 CN CN201620477914.1U patent/CN205689204U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106997714A (en) * | 2017-03-15 | 2017-08-01 | 西南石油大学 | A kind of fracture-cavity type carbonate fracture network flow device |
| CN107165624A (en) * | 2017-06-13 | 2017-09-15 | 西南石油大学 | Fractured-cavernous carbonate reservoir three-dimensional large scale physical model and preparation method thereof |
| CN107165624B (en) * | 2017-06-13 | 2023-04-11 | 西南石油大学 | Three-dimensional large-size physical model of fracture-cave carbonate reservoir and preparation method thereof |
| CN109882149A (en) * | 2018-01-29 | 2019-06-14 | 西南石油大学 | A kind of experimental provision and method for simulating fracture-cavity type carbonate gas condensate reservoir Production development |
| CN112282741A (en) * | 2019-07-24 | 2021-01-29 | 中国石油化工股份有限公司 | Target reservoir well testing analysis method, computer storage medium and computer equipment |
| CN112282741B (en) * | 2019-07-24 | 2024-05-14 | 中国石油化工股份有限公司 | Target reservoir well test analysis method, computer storage medium and computer equipment |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161116 Termination date: 20170524 |
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| CF01 | Termination of patent right due to non-payment of annual fee |