CN104949908A - Testing method and device for permeability of oil cutting gas area of gas storage - Google Patents
Testing method and device for permeability of oil cutting gas area of gas storage Download PDFInfo
- Publication number
- CN104949908A CN104949908A CN201510333476.1A CN201510333476A CN104949908A CN 104949908 A CN104949908 A CN 104949908A CN 201510333476 A CN201510333476 A CN 201510333476A CN 104949908 A CN104949908 A CN 104949908A
- Authority
- CN
- China
- Prior art keywords
- gas
- oil
- drive
- permeability
- experiment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Measuring Volume Flow (AREA)
Abstract
The invention provides a testing method and a device for permeability of an oil cutting gas area of a gas storage. The method comprises the steps that an oil gas sample is prepared according to oil field development data of the gas storage; reciprocating seepage experiments are performed on the oil gas sample according to preset times, wherein one reciprocating seepage experiment comprises a forward gas driving experiment and a reverse gas driving experiment; metering pressure and flow rates of forward and reverse gas driving in the reciprocating seepage experiments are sequentially acquired; and gas-phase relative permeability after the forward and reverse gas driving is determined according to the metering pressure and the flow rates of the forward and reverse gas driving. According to the method, each injection-production cycle of the permeability of a waterflooding gas area of the gas storage is tested, and a basis is finally provided for forecasting well productivity of the waterflooding gas area.
Description
Technical field
The present invention relates to oil-gas exploration technology, is method of testing and the device of a kind of gas storage You Qinqi district permeability concretely.
Background technology
Gas storage is the powerful measure regulating the rock gas equilibrium of supply and demand, the important indicator weighing its regulating power is gas production ability, gas production ability is realized by prediction gas storage well production capacity, Accurate Prediction well productivity is the technical barrier of puzzlement related scientific research personnel, particularly water logging gas district well capacity, because gas storage major part well is all deployed in wherein.
In the method for the prediction watered-out gas reservoir gas storage reconstruction well productivity of prior art, Forecasting Methodology for water logging gas district well productivity is less, and the important content carrying out capability forecasting in prior art tests out the change of building storehouse reservoir permeability, because air water interactive areas is completely different with water logging gas district fluid distrbution, cause Properties of Water-gas Flowing Through Porous Media process different with mechanism.Water logging gas district is positioned at the reservoir of more than the corresponding gas-water interface of gas storage pressure upper limit, namely for filling Qi Shiweiqi district, gas production Ye Weiqi in latter stage district after pool, gas storage reconstruction before gas storage builds storehouse, there is back and forth flowing with gas injection/gas recovery gas in water logging gas district, completely different from the mutual displacement of air water in air water interactive areas.
Therefore, in order to the well productivity in Accurate Prediction water logging gas district, the measuring technology of reservoir permeability in the mutual method of calculating productivity of air water need be improved.
Summary of the invention
Embodiments provide the method for testing of a kind of gas storage You Qinqi district permeability, comprising:
According to the oil-field development data preparation oil gas sample of gas storage;
Carry out reciprocal Seepage Experiment by preset times to described oil gas sample, wherein, once back and forth Seepage Experiment comprises: the experiment of forward gas drive and the experiment of reverse gas drive;
Sequentially obtain metering pressure and the flow velocity of the metering pressure of the forward gas drive in each reciprocal Seepage Experiment and flow velocity, oppositely gas drive;
According to the gas phase relative permeability after gas phase relative permeability, the oppositely gas drive after the metering pressure of described forward gas drive and the metering pressure of flow velocity, oppositely gas drive and flow velocity determination forward gas drive.
In the embodiment of the present invention, determine the preset times of reciprocal Seepage Experiment according to the designed life of gas storage.
In the embodiment of the present invention, the oil-field development data configuration oil gas sample according to gas storage comprises:
According to the data preparation simulated oil sample before oil-field development;
In described simulated oil sample, inject dry gas or water according to phase of development data, prepare described oil gas sample.
Meanwhile, the present invention also provides the proving installation of a kind of gas storage You Qinqi district permeability, comprising:
Core holding unit, for placing the oil-field development data preparation oil gas sample according to gas storage;
First flow pressure transducer, when carrying out the experiment of forward gas drive to oil gas sample, for gathering metering pressure and the flow velocity of forward gas drive;
Second pressure flow sensor, when carrying out the experiment of reverse gas drive to oil gas sample, for gathering metering pressure and the flow velocity of reverse gas drive;
Gas phase relative permeability after gas phase relative permeability, oppositely gas drive after the metering pressure of the metering pressure of the described forward gas drive gathered according to described proving installation and flow velocity, oppositely gas drive and flow velocity determination forward gas drive.
The present invention, by improving permeability testing process, realizes the test of gas storage You Qinqi district permeability each injection-production cycle, finally for the well capacity prediction of prediction You Qinqi district provides foundation.
For above and other object of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and coordinate institute's accompanying drawings, be described in detail below.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the method for testing process flow diagram of a kind of gas storage You Qinqi district disclosed by the invention reservoir permeability;
Fig. 2 is the experimental provision schematic diagram testing permeability in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The invention provides a kind of Forecasting Methodology for gas storage You Qinqi district well productivity and device, the physical process that during the note gas production of consideration gas storage, the positive and negative both direction of gas is back and forth migrated, can predict that in gas storage life cycle, each note adopts the well productivity of cycle period.As shown in Figure 1, be the method for testing of a kind of gas storage You Qinqi district disclosed by the invention permeability, comprise:
Step S101, according to the oil-field development data preparation oil gas sample of gas storage;
Step S102, carries out reciprocal Seepage Experiment by preset times to described oil gas sample, and wherein, once back and forth Seepage Experiment comprises: the experiment of forward gas drive and the experiment of reverse gas drive;
Step S103, sequentially obtains metering pressure and the flow velocity of the metering pressure of the forward gas drive in each reciprocal Seepage Experiment and flow velocity, oppositely gas drive;
Step S104, according to the gas phase relative permeability after gas phase relative permeability, the oppositely gas drive after the metering pressure of described forward gas drive and the metering pressure of flow velocity, oppositely gas drive and flow velocity determination forward gas drive.
In the embodiment of the present invention, determine the preset times of reciprocal Seepage Experiment according to the designed life of gas storage.
In the embodiment of the present invention, the oil-field development data configuration oil gas sample according to gas storage comprises:
According to the data preparation simulated oil sample before oil-field development;
In described simulated oil sample, inject dry gas or water according to phase of development data, prepare described oil gas sample.
Meanwhile, the present invention also provides the proving installation of a kind of gas storage You Qinqi district permeability, comprising:
Core holding unit, for placing the oil-field development data preparation oil gas sample according to gas storage;
First flow pressure transducer, when carrying out the experiment of forward gas drive to oil gas sample, for gathering metering pressure and the flow velocity of forward gas drive;
Second pressure flow sensor, when carrying out the experiment of reverse gas drive to oil gas sample, for gathering metering pressure and the flow velocity of reverse gas drive;
Gas phase relative permeability after gas phase relative permeability, oppositely gas drive after the metering pressure of the metering pressure of the described forward gas drive gathered according to described proving installation and flow velocity, oppositely gas drive and flow velocity determination forward gas drive.
The present invention, by improving permeability testing process, realizes the test of gas storage You Qinqi district permeability each injection-production cycle, finally for prediction You Qinqi district well productivity provides foundation.
As shown in Figure 2, be the experimental provision in the embodiment of the present invention, comprise: source of the gas 1, first flow pressure transducer 2, constant temperature oven 3, core and clamper 4, second pressure flow sensor 5, oil gas mix sample device 6.
The step of the embodiment of the present invention is as follows:
1. according to oil gas reagent used in oil-field development history configuration experiment;
2. utilize the reagent configured, simulation oil field performance history, builds reservoir state before storehouse;
3. design the reciprocal Seepage Experiment method of the positive and negative both direction of gas;
4. test permeability corresponding to each injection-production cycle.
The present embodiment considers the physical process identical with produced on-site, and result of calculation accuracy increases substantially, and particularly in 2-5 the cycle that gas storage brings into operation, technical advantage is entered and highlighted all the more.Reason the present invention is the PRODUCTION FORECASTING METHODS of the permeability determined, provides relatively accurate well productivity technical parameter by for gas storage evaluation in early stage.
Below in conjunction with the device shown in concrete steps and Fig. 2, the embodiment of the present invention is described in further details.
1. Experimental Flowing Object configuration: the oil gas according to oil-field development forms, oil gas reagent used in configuration experiment.
2. build the foundation of reservoir state before storehouse: inject simulated oil at A end, hold water filling or gas at B, recover the oil, form oil reservoir irreducible oil state, obtain building the state of oil reservoir before storehouse.
The oil that wherein A section is injected is the simulated oil (oil gas reagent) that previous step 1 configures, consistent when composition finds with oil field; The gas of B end note is dry gas, forms consistent with the component of phase of development injected gas; If water filling (containing polymkeric substance and surfactant etc.) exploitation, its composition should be consistent with the composition of the injection fluid of phase of development.
3. the reciprocal Seepage Experiment of the positive and negative both direction of gas, to obtain permeability corresponding to each injection-production cycle, wherein, A end injects, B holds the flowing of extraction to be forward flow, and on the contrary, B end injects, A holds the flowing of extraction to be reversed flow:
1. A injection process: from A end note dry gas, it is consistent that dry gas component and pipeline carry out gas, metering pressure and flow velocity, enters the rock core of constant temperature oven from the gas of A end injection;
2. hold extraction process: the production of B end is gas-oil mixture, and metering pressure and flow velocity, all enter oil gas and mix sample device, and sealing is preserved, ensure that oil gas is not revealed;
3. B holds injection process: oil gas mixes potpourri temperature-pressure in sample device, returns near reservoir pressure and temperature, stirs, metering pressure and flow velocity, and injects the rock core being in constant temperature oven;
4. A holds extraction process: the production of A end is gas-oil mixture, and metering pressure and flow velocity, all discard, and do not store;
4., for 30 year life-span of gas storage (i.e. 30 gas injections, 30 gas production), test permeability corresponding to each injection-production cycle respectively:
1) the 1st forward gas drive: first time holds gas injection from A, and B hold gas production, processes and obtains gas phase relative permeability after the 1st forward gas drive, use K
1+represent;
2) the 1st reverse gas drive: 1) on basis, hold gas injection from B, A hold gas production, and process and obtain gas phase relative permeability after the 1st reverse gas drive, use K
1-represent;
3) the 2nd forward gas drive: 2) on basis, hold gas injection from A, B hold gas production, and process and obtain gas phase relative permeability after the 2nd forward gas drive, use K
2+represent;
4) the 2nd reverse gas drive: 3) on basis, hold gas injection from B, A hold gas production, and process and obtain gas phase relative permeability after the 2nd reverse gas drive, use K
2-represent;
……
59) the 30th forward gas drive: 58) on basis, hold gas injection from A, B hold gas production, and process and obtain gas phase relative permeability after the 30th forward gas drive, use K
30+represent;
60) the 30th reverse gas drive: 59) on basis, hold gas injection from B, A hold gas production, and process obtains gas phase relative permeability after the reverse gas drive of second time, uses K
30-represent;
The present invention, by improving permeability testing process, realizes the test of gas storage You Qinqi district permeability each injection-production cycle, finally for prediction You Qinqi district well productivity provides foundation.The present embodiment considers the physical process identical with produced on-site, and result of calculation accuracy increases substantially, and particularly in 2-5 the cycle that gas storage brings into operation, technical advantage is entered and highlighted all the more.Reason the present invention is the PRODUCTION FORECASTING METHODS of the permeability determined, provides relatively accurate well productivity technical parameter by for gas storage evaluation in early stage.
Apply specific embodiment in the present invention to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (4)
1. a method of testing for gas storage You Qinqi district permeability, is characterized in that, described method comprises:
According to the oil-field development data preparation oil gas sample of gas storage;
Carry out reciprocal Seepage Experiment by preset times to described oil gas sample, wherein, once back and forth Seepage Experiment comprises: the experiment of forward gas drive and the experiment of reverse gas drive;
Sequentially obtain metering pressure and the flow velocity of the metering pressure of the forward gas drive in each reciprocal Seepage Experiment and flow velocity, oppositely gas drive;
According to the gas phase relative permeability after gas phase relative permeability, the oppositely gas drive after the metering pressure of described forward gas drive and the metering pressure of flow velocity, oppositely gas drive and flow velocity determination forward gas drive.
2. the method for testing of permeability as claimed in claim 1, it is characterized in that, described method also comprises: the preset times determining reciprocal Seepage Experiment according to the designed life of gas storage.
3. the method for testing of permeability as claimed in claim 2, it is characterized in that, described comprises according to the oil-field development data configuration oil gas sample of gas storage:
According to the data preparation simulated oil sample before oil-field development;
In described simulated oil sample, inject dry gas or water according to phase of development data, prepare described oil gas sample.
4. a proving installation for gas storage You Qinqi district permeability, is characterized in that, described proving installation comprises:
Core holding unit, for placing the oil-field development data preparation oil gas sample according to gas storage;
First flow pressure transducer, when carrying out the experiment of forward gas drive to oil gas sample, for gathering metering pressure and the flow velocity of forward gas drive;
Second pressure flow sensor, when carrying out the experiment of reverse gas drive to oil gas sample, for gathering metering pressure and the flow velocity of reverse gas drive;
Gas phase relative permeability after gas phase relative permeability, oppositely gas drive after the metering pressure of the metering pressure of the described forward gas drive gathered according to described proving installation and flow velocity, oppositely gas drive and flow velocity determination forward gas drive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510333476.1A CN104949908A (en) | 2015-06-16 | 2015-06-16 | Testing method and device for permeability of oil cutting gas area of gas storage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510333476.1A CN104949908A (en) | 2015-06-16 | 2015-06-16 | Testing method and device for permeability of oil cutting gas area of gas storage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104949908A true CN104949908A (en) | 2015-09-30 |
Family
ID=54164733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510333476.1A Pending CN104949908A (en) | 2015-06-16 | 2015-06-16 | Testing method and device for permeability of oil cutting gas area of gas storage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104949908A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19646791A1 (en) * | 1996-11-13 | 1998-05-14 | Draegerwerk Ag | Xenon-enrichment apparatus |
| CN102455277A (en) * | 2010-10-22 | 2012-05-16 | 中国石油化工股份有限公司 | Device and method for measuring gasometry permeability of rock under high pressure |
| CN102944666A (en) * | 2012-12-05 | 2013-02-27 | 西南石油大学 | Shale gas reservoir recovery simulation experimental device |
| CN102980837A (en) * | 2012-11-16 | 2013-03-20 | 中国石油天然气股份有限公司 | Device and measuring method for hydrocarbon diffusion coefficient in rocks under high temperature and high pressure |
| CN103837456A (en) * | 2012-11-24 | 2014-06-04 | 唐静 | Rock core damage experiment apparatus and test method thereof |
-
2015
- 2015-06-16 CN CN201510333476.1A patent/CN104949908A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19646791A1 (en) * | 1996-11-13 | 1998-05-14 | Draegerwerk Ag | Xenon-enrichment apparatus |
| CN102455277A (en) * | 2010-10-22 | 2012-05-16 | 中国石油化工股份有限公司 | Device and method for measuring gasometry permeability of rock under high pressure |
| CN102980837A (en) * | 2012-11-16 | 2013-03-20 | 中国石油天然气股份有限公司 | Device and measuring method for hydrocarbon diffusion coefficient in rocks under high temperature and high pressure |
| CN103837456A (en) * | 2012-11-24 | 2014-06-04 | 唐静 | Rock core damage experiment apparatus and test method thereof |
| CN102944666A (en) * | 2012-12-05 | 2013-02-27 | 西南石油大学 | Shale gas reservoir recovery simulation experimental device |
Non-Patent Citations (2)
| Title |
|---|
| 何顺利 等: "大张坨储气库储层注采渗流特征研究", 《天然气工业》 * |
| 石磊等: "水驱砂岩气藏型底下储气库气水两相渗流机理", 《集输工程》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Mosavat et al. | Performance of secondary carbonated water injection in light oil systems | |
| CN102243196B (en) | Method for quickly detecting saturation exponent n in laboratory | |
| CN102809529B (en) | Three-phase relative permeability testing method based on CT (computed tomography) scanning | |
| CN102608011B (en) | Method for determining and building bound water for crack-pore (hole) type reservoir core | |
| CN105628506A (en) | Rock fracture simulation sample and preparation method thereof, as well as simulation test device and simulation test method | |
| CN106246170B (en) | Five core translocation physical simulating devices and flow net model method | |
| CN103233726B (en) | Experimental calibration method of saturation degree and water production rate logging evaluation model of water-flooded layer | |
| CN102012347B (en) | Method for detecting channeling condition by static gelatinization strength of cement | |
| CN104564043B (en) | A kind of diversion chamber of gas test compact reservoir seam net flow conductivity and its method of work | |
| CN202814845U (en) | Computed tomography (CT) scan-based three-phase relative permeability test system | |
| CN103674593B (en) | A kind of device and method for simulating the flood pot test of low permeability reservoir pressure break straight well | |
| Pagels et al. | Measuring capillary pressure tells more than pretty pictures | |
| CN105784567A (en) | Equipment and method for testing relative permeability of rock cores | |
| CN105510203A (en) | Method for determination of sandstone oil reservoir oil-water relative permeability under different temperature gradients | |
| CN105298488A (en) | Diversion capacity testing method under non-continuous filling mode | |
| CN105181222A (en) | Device for measuring carbon dioxide minimum miscible pressure in multiple modes | |
| CN203769767U (en) | Horizontal-well physical simulation experiment device | |
| CN103743657A (en) | Experimental determination method for passing capability of polymer gel grains in porous medium | |
| CN102564900B (en) | Simulation test method for seepage process of polymer solution at different positions of stratum | |
| Zhang et al. | Experimental study on seepage characteristics of fractured rock mass and its electrical response | |
| CN108196002B (en) | Performance evaluation device and test method for temporary plugging steering fluid for fracture acidizing | |
| CN104515717A (en) | Drilling fluid settleability testing device | |
| Gao et al. | Quantitative evaluation of the plugging effect of the gel particle system flooding agent using NMR technique | |
| CN205157527U (en) | Drilling fluid performance and oil gas content dependence experimental apparatus | |
| CN104964904A (en) | Testing method and device of reservoir permeability of flooded gas area of gas storage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150930 |