CN102720486B - Device for testing shale gas fracture network diversion capacity and working method of device - Google Patents
Device for testing shale gas fracture network diversion capacity and working method of device Download PDFInfo
- Publication number
- CN102720486B CN102720486B CN201210218234.4A CN201210218234A CN102720486B CN 102720486 B CN102720486 B CN 102720486B CN 201210218234 A CN201210218234 A CN 201210218234A CN 102720486 B CN102720486 B CN 102720486B
- Authority
- CN
- China
- Prior art keywords
- gas
- diversion chamber
- diversion
- piston
- shale
- Prior art date
Links
- 239000007789 gases Substances 0.000 title claims abstract description 88
- 239000004579 marble Substances 0.000 claims abstract description 32
- 238000006073 displacement reactions Methods 0.000 claims abstract description 27
- 238000004088 simulation Methods 0.000 claims description 25
- 239000003570 air Substances 0.000 claims description 8
- 239000011901 water Substances 0.000 claims description 8
- 230000035699 permeability Effects 0.000 claims description 5
- 210000003141 Lower Extremity Anatomy 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000001186 cumulative Effects 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000001308 nitrogen Substances 0.000 claims description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 3
- 238000003672 processing method Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 206010017076 Fracture Diseases 0.000 abstract description 53
- 206010010149 Complicated fracture Diseases 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000005755 formation reactions Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 methods Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003921 oils Substances 0.000 description 3
- 238000005516 engineering processes Methods 0.000 description 2
- 231100001004 fissures Toxicity 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 208000006670 Multiple Fractures Diseases 0.000 description 1
- 208000008425 Protein Deficiency Diseases 0.000 description 1
- 239000008346 aqueous phases Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000003379 elimination reactions Methods 0.000 description 1
- 230000001965 increased Effects 0.000 description 1
- 230000001939 inductive effects Effects 0.000 description 1
- 239000010410 layers Substances 0.000 description 1
- 239000007791 liquid phases Substances 0.000 description 1
- 239000012071 phases Substances 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 239000003079 shale oil Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Abstract
Description
Technical field
The present invention relates to a kind of device and method of work thereof of testing shale gas checking seam network flow conductivity, belong to the technical field of oil-gas field development.
Background technology
China's traditional oils gas field enters tail period, and productivity decline is obvious, therefore finds that new to take over the energy imperative.Shale gas is one of important making & breaking of conventional gas and oil resource.Shale gas is as emerging unconventional energy resource, and its reserves are huge, in alleviation energy resource supply pressure, development low-carbon economy and adjusting and optimizing energy resource structure etc., have very important effect.Compared with conventional gas, shale gas exploitation has the advantages such as production life of well is long, the production cycle is long, production capacity is stable, and country particularly payes attention to the exploitation of shale gas in recent years, gives important support in policy, in fund.Therefore, strengthen the research to shale gas production technique, maintenance is developed the economy, alleviated Pressure on Energy and have great importance.
Shale reservoir natural pressure is low, permeability is low (is less than 0.001 × 10 -3μm 2), usually without natural production capacity, often need to take fracturing methods effectively to exploit.Shale gas pressure break adopts slippery water or clear water usually, uses high discharge capacity, proppant carries into stratum by low viscous mode, to reach communication intrinsic fracture, form the effect of complex fracture network (seam net) in stratum.The fundamental starting point of shale gas FRACTURING DESIGN is how to form effective network fracture.Can shale gas throughput, and depend on that inducing natural crack in fracturing fracture and fracturing process is opened and the interlaced network fracture size that formed to a great extent, the flow conductivity of fracture network directly affects shale gas well flow index.Therefore, shale gas Reservoir Fracture network flow conductivity is studied significant for raising fracturing yield increasing effect.
Traditional fracturing mode adopts high viscosity fracturing fluid to carry into stratum by proppant, the sand packed fracture that one has high flow conductivity is formed in stratum, flow conductivity for the crack of a filling proppant can adopt fracture guide instrument to evaluate flow conductivity, and this technology is comparatively ripe; Research method for the flow conductivity of the acid-etched fracture adopting acidifying measure to be formed is also comparatively ripe, and defines systematized theory and rating system.A crack in the evaluation method formation of above-mentioned two kinds of traditional fracture condudtiviies is evaluated, and fracture network be formed in the earth formation communicate with each other, complex shape, width differ, crisscross Fracture Systems, therefore traditional evaluation method can not be directly applied to the fracture network that shale gas pressure break formed.
At present, to shale gas pressure break form fracture network flow conductivity be mostly to describe qualitatively, lack suitable experimental facilities and method carries out this determining quantitative analysis.The people such as Lu Zhanguo have carried out the seepage flow characteristics experimental study in orthogonal fracture network, in research orthogonal fracture network model, seepage flow characteristics and model structure are on the impact of permeability, utilize marble and stainless steel gasket to set up the orthogonal fracture network model of different structure, and pass through the PHYSICAL MODELING OF IN seepage flow characteristics of aqueous phase and water-oil phase.But its research to as if Fractured Reservoir, and it is considered that fracture network is on the impact of the seepage velocity of liquid phase.The theoretical method that more existing fracture network flow conductivity is evaluated, its result can not get the checking of testing, and its accuracy can not be guaranteed.Become in network fracture to be usually filled with proppant in shale gas pressure break, for the network sand packed fracture of this complexity, there is no experimental facilities and method at present to determine quantifier elimination.The backwardness of evaluation method have impact on the progress of shale gas fracturing technique and the Efficient Development of shale oil gas reservoir.
Summary of the invention
For above technical deficiency, the invention provides a kind of device testing shale gas checking seam network flow conductivity, to simulate and to measure the flow conductivity of the fracture network that shale reservoir is produced by pressure break.
The present invention also provides a kind of method of work of said apparatus.
Technical scheme of the present invention is as follows:
Test a device for shale gas checking seam network flow conductivity, it comprises rectangular guiding room, gas flowmeter, differential manometer and displacement meter; Described diversion chamber comprises sidewall, in diversion chamber, is provided with upper piston and lower piston, described sidewall, upper piston and lower piston close surround diversion cavity, upper cover plate is installed on upper piston, under lower piston, lower cover is installed, in diversion cavity and between described upper piston and lower piston, be provided with the marble in simulation shale crack, be respectively arranged with cushion rubber at the top edge of described sidewall and lower limb; The object of described cushion rubber is used to seal diversion chamber;
The sidewall at the two ends, left and right of diversion chamber is respectively arranged with air inlet port and gas outlet, and described air inlet port is connected with source of the gas by pipeline, and described pipeline is provided with gas flowmeter;
Described diversion chamber is arranged on press, is provided with displacement meter a and displacement meter b at the two ends, left and right of diversion chamber between described upper cover plate and lower cover; Described press carrys out the clossing pressure in crack in simulated formation for pressure that diversion chamber provides; When described press is exerted pressure to described diversion chamber, described displacement meter shows diversion chamber's internal fissure network in real time and effectively stitches wide, and the effective seam recording the networking, crack under each clossing pressure is respectively wide.
Sidewall in the front end of diversion chamber is provided with admission pressure and detects mouth and outlet pressure detection mouth, admission pressure detects between mouth and outlet pressure detection mouth and is provided with differential manometer.
Preferred according to the present invention, cover in described marble outside and be provided with the anti-drift net of proppant.The anti-drift net of described proppant is used to prevent proppant from flowing out from simulation shale fracture network.
Preferred according to the present invention, described source of the gas is bottled nitrogen.
Preferred according to the present invention, described upper cover plate and lower cover are steel plate.
Preferred according to the present invention, the device of described test shale gas checking seam network flow conductivity also comprises acquisition and control system and computer, and described gas flowmeter, differential manometer, displacement meter a are connected with computer respectively by described acquisition and control system with displacement meter b.
Preferred according to the present invention, the marble in described simulation shale crack is prepared according to following processing method by monoblock marble:
(1) choose the monoblock marble that length is 178mm, width is 37mm, thickness range is 0.4mm ~ 1.5mm, described monoblock marble wetability is identical with the shale that will simulate;
(2) according to the shale fracture network size that will simulate, the monoblock marble described in step (1) is carried out transverse cuts and longitudinally cutting, then load in diversion chamber.
Utilize said apparatus to test a method for shale gas checking seam network flow conductivity, comprise step as follows:
(1) add proppant by certain sanding concentration to water conservancy diversion indoor, the effective seam realizing different fracture network is wide, and the initial effectively seam that the proppant total amount added is fracture network divided by the cross-sectional area of diversion chamber is wide;
(2) acquisition and control system is opened;
(3) start press, set the pressure of described press, exert pressure to diversion chamber, the scope of exerting pressure is 0-100MPa;
(4) open source of the gas to the indoor ventilation of water conservancy diversion, after described differential manometer maintenance is stable, starts experiment;
(5) open computer, by acquisition and control system, the gas flow Q collected, pressure difference data Δ P and displacement data h are transferred in computer;
(6) computer according to Real-time Collection to gas flow Q, pressure difference data Δ P and displacement data h bring formula into and 1. calculate simulation shale gas fracture network flow conductivity k under the wide and fixation pressure of effectively seam fw f
Formula 1. in w f-effectively seam is wide, and described effective seam is wide is the ratio of the cumulative volume in actual crack and the cross-sectional area of diversion chamber in simulation fracture network, k fthe permeability of-simulation shale fracture network; Q-gas flow, through the flow of diversion chamber, is read by gas flowmeter; N under μ-normal temperature 2viscosity; The length of Δ L-diversion chamber; The flow section area of A-marble blocks: be multiplied by simulation shale crack marble fracture network by the width of diversion chamber and effectively stitch wide trying to achieve; Δ P-gas flow, through the pressure reduction of diversion chamber, is read by described differential manometer;
(7) change the pressure of described press, repeat step (3) ~ (6); The object of this step is under identical initial effectively seam is wide, in formation testing crack different clossing pressures under simulation shale gas fracture network flow conductivity;
(8) change the amount or the sanding concentration that add proppant, repeat step (1) ~ (7); The object of this step is under different initial effectively seams is wide, the simulation shale gas fracture network flow conductivity under the clossing pressure that in formation testing, crack is different.
Beneficial effect of the present invention:
1. the present invention has filled up and means cannot measure the blank of shale gas fracture network flow conductivity by experiment, can record the flow conductivity under different fracture network model of analogous outcrop; Diversion chamber of the present invention is different from traditional API standard diversion chamber: traditional API standard diversion chamber end is arc, and diversion chamber of the present invention end is square, its volume is 6 times of traditional API standard diversion chamber, can carry out the research of complex fracture network flow conductivity;
2. the present invention proposes and use marble slab to simulate shale, overcome on-the-spot shale and get the shortcoming that core is difficult and cost is high, greatly reduce experiment difficulty and cost;
3. the present invention is by freely cutting marmorean, can assemble the model that Dali block plate obtains multiple fracture network, increases the manual adjustment of experiment;
4, apparatus structure of the present invention easy, be easy to operation, the experimental technique provided is practical, has successfully measured the flow conductivity of shale gas reservoir fracture network.
Accompanying drawing explanation
Fig. 1 is the structural representation of the device of test shale air cleft net flow conductivity of the present invention;
Fig. 2 is the structural representation of diversion chamber of the present invention;
Fig. 3 is the marmorean structural representation of simulation shale fracture network of the present invention;
In fig. 1-3,1, source of the gas; 2, gas flowmeter; 3, displacement meter a; 4, displacement meter b, 5, differential manometer; 6, acquisition and control system; 7, computer; 8, press; 9, diversion chamber; 10, the anti-drift net of proppant; 11, upper cover plate; 12, lower cover; 13, upper piston; 14, lower piston; 15, the marble in shale crack is simulated; 16, admission pressure detects mouth; 17, outlet pressure detects mouth; 18, air inlet port; 19, gas outlet; 20, cushion rubber; 21, proppant; 22, crack; 23, by the marble blocks after stripping and slicing.
Detailed description of the invention
Below in conjunction with embodiment and Figure of description, the present invention is described in detail, but is not limited thereto.
Embodiment 1,
Test a device for shale gas checking seam network flow conductivity, it comprises rectangular guiding room 9, gas flowmeter 2, differential manometer 5 displacement meter a and displacement meter b; Described diversion chamber 9 comprises sidewall, in diversion chamber, is provided with upper piston 13 and lower piston 14, described sidewall, upper piston 13 and lower piston 14 close surround diversion cavity, upper cover plate 11 is installed on upper piston 13,14 times lower cover 12 is installed at lower piston, in diversion cavity and between described upper piston 13 and lower piston 14, be provided with the marble 15 in simulation shale crack, be respectively arranged with cushion rubber 20 at the top edge of described sidewall and lower limb;
The sidewall at the two ends, left and right of diversion chamber 9 is respectively arranged with air inlet port 18 and gas outlet 19, and described air inlet port 18 is connected with source of the gas 1 by pipeline, and described pipeline is provided with gas flowmeter 2;
Described diversion chamber 9 is arranged on press 8, is provided with displacement meter a and displacement meter b at the two ends, left and right of diversion chamber 9 between described upper cover plate 11 and lower cover 12; Described press 8 carrys out the clossing pressure in crack in simulated formation for pressure that diversion chamber 9 provides; When described press 8 is exerted pressure to described diversion chamber 9, described displacement meter shows diversion chamber's internal fissure network in real time and effectively stitches wide, and the effective seam recording the networking, crack under each clossing pressure is respectively wide.
Sidewall in the front end of diversion chamber is provided with admission pressure and detects mouth 16 and outlet pressure detection mouth 17, admission pressure detects between mouth 16 and outlet pressure detection mouth 17 and is provided with differential manometer 5.
The marble 15 in described simulation shale crack is prepared according to following processing method by monoblock marble:
(1) choose the monoblock marble that length is 178mm, width is 37mm, thickness range is 0.4mm ~ 1.5mm, described monoblock marble wetability is identical with the shale that will simulate;
(2) according to the shale fracture network size that will simulate, the monoblock marble described in step (1) is carried out transverse cuts and longitudinally cutting, then load in diversion chamber 9.
Embodiment 2,
As Figure 1-3.
A kind of device testing shale gas checking seam network flow conductivity as described in Example 1, its difference is, the device of described test shale gas checking seam network flow conductivity also comprises acquisition and control system and computer, and described gas flowmeter, differential manometer, displacement meter a are connected with computer respectively by described acquisition and control system with displacement meter b.
Cover in described marble outside and be provided with the anti-drift net 10 of proppant.Described source of the gas 1 is bottled nitrogen.Described upper cover plate 11 and lower cover 12 are steel plate.
Embodiment 3,
Utilize a method for device to test shale gas fracture network flow conductivity as described in Example 2, comprise step as follows:
Utilize said apparatus to test a method for shale gas checking seam network flow conductivity, comprise step as follows:
(1) add proppant by certain sanding concentration to water conservancy diversion indoor, the effective seam realizing different fracture network is wide, and the initial effectively seam that the proppant total amount added is fracture network divided by the cross-sectional area of diversion chamber is wide;
(2) acquisition and control system is opened;
(3) start press, set the pressure of described press, exert pressure to diversion chamber, the scope of exerting pressure is 0-100MPa;
(4) open source of the gas to the indoor ventilation of water conservancy diversion, after described differential manometer maintenance is stable, starts experiment;
(5) open computer, by acquisition and control system, the gas flow Q collected, pressure difference data Δ P and displacement data h are transferred in computer;
(6) computer according to Real-time Collection to gas flow Q, pressure difference data Δ P and displacement data h bring formula into and 1. calculate simulation shale gas fracture network flow conductivity k under the wide and fixation pressure of effectively seam fw f
Formula 1. in w f-effectively seam is wide, and described effective seam is wide is the ratio of the cumulative volume in actual crack and the cross-sectional area of diversion chamber in simulation fracture network, k fthe permeability of-simulation shale fracture network; Q-gas flow, through the flow of diversion chamber, is read by gas flowmeter; N under μ-normal temperature 2viscosity; The length of Δ L-diversion chamber; The flow section area of A-marble blocks: be multiplied by simulation shale crack marble fracture network by the width of diversion chamber and effectively stitch wide trying to achieve; Δ P-gas flow, through the pressure reduction of diversion chamber, is read by described differential manometer;
(7) change the pressure of described press, repeat step (3) ~ (6);
(8) change the amount or the sanding concentration that add proppant, repeat step (1) ~ (7);
Carry out above step (1) ~ (8), the wide size of initial effectively seam of record simulation shale gas fracture network, press simulation are the clossing pressure numerical value in crack in layer respectively, 1. calculate corresponding simulation shale gas fracture network flow conductivity k according to measured data according to formula fw f, as shown in table 1:
Table 1:
Different initial effectively seam wide (1.2mm, 1.6mm and 2.0mm), Dali, Different Strata pressure condition Imitating shale crack stony fracture
The flow conductivity of seam network
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210218234.4A CN102720486B (en) | 2012-06-28 | 2012-06-28 | Device for testing shale gas fracture network diversion capacity and working method of device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210218234.4A CN102720486B (en) | 2012-06-28 | 2012-06-28 | Device for testing shale gas fracture network diversion capacity and working method of device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102720486A CN102720486A (en) | 2012-10-10 |
| CN102720486B true CN102720486B (en) | 2015-07-15 |
Family
ID=46946335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210218234.4A CN102720486B (en) | 2012-06-28 | 2012-06-28 | Device for testing shale gas fracture network diversion capacity and working method of device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102720486B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967667B (en) * | 2012-11-19 | 2015-01-14 | 中国科学院广州地球化学研究所 | Device for qualitatively and quantitatively analyzing shale gas and using method thereof |
| CN105484738B (en) * | 2014-09-18 | 2019-10-11 | 中国石油化工股份有限公司 | Method for simulating the flow conductivity in shale gas reservoir crack |
| CN104358554B (en) * | 2014-12-09 | 2017-05-10 | 中国石油集团川庆钻探工程有限公司 | Method applied to evaluation of flow conductivity of shale-gas-combined sand fracturing fracture |
| CN104564043B (en) * | 2014-12-18 | 2017-12-01 | 中国石油大学(华东) | A kind of diversion chamber of gas test compact reservoir seam net flow conductivity and its method of work |
| CN104594871B (en) * | 2014-12-27 | 2017-10-10 | 重庆地质矿产研究院 | A kind of apparatus and method for simulating shale complex fracture sanding |
| CN104747182A (en) * | 2015-01-28 | 2015-07-01 | 中国石油天然气股份有限公司 | Crack flow conductivity test method |
| CN104727788A (en) * | 2015-02-06 | 2015-06-24 | 西南石油大学 | Three-dimensional single-well gas injection oil replacement simulation experiment device for fracture-cavity reservoir |
| CN105510165B (en) * | 2015-12-04 | 2019-04-09 | 中国石油集团川庆钻探工程有限公司 | Discontinuous sanding crack seam inner support agent sand group's erosion evaluating apparatus and test method |
| CN106337677B (en) * | 2016-10-17 | 2019-03-26 | 长江大学 | Shale gas pressure-break net air water two-phase flow conductivity test macro and test method |
| CN107515183B (en) * | 2017-08-22 | 2019-11-01 | 东北石油大学 | Test coarse fracture condudtiviy experimental provision and test evaluation method |
| CN109406371A (en) * | 2018-12-17 | 2019-03-01 | 西安石油大学 | It is a kind of coupled based on man-made fracture with intrinsic fracture under permeability survey method and measuring system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519961A (en) * | 2009-04-01 | 2009-09-02 | 西南石油大学 | Device and method for measuring embedding depth of proppant |
| CN201391314Y (en) * | 2009-04-01 | 2010-01-27 | 西南石油大学 | Measuring device for insert depth of proppant |
| CN201433756Y (en) * | 2009-06-02 | 2010-03-31 | 海安县石油科研仪器有限公司 | Acid-etched fracture flow diversion instrument |
| CN101864949A (en) * | 2010-06-18 | 2010-10-20 | 西南石油大学 | Test device and method for simulating acid etching crack flow guide capability |
| CN101892828A (en) * | 2010-05-25 | 2010-11-24 | 中国石油大学(北京) | Preparation method of anisotropic seepage medium with slits |
| CN102174883A (en) * | 2011-01-13 | 2011-09-07 | 东北石油大学 | Method for testing flow conductivity of self-supported crack in riverfrac treatment |
| CN102183796A (en) * | 2011-03-02 | 2011-09-14 | 西南石油大学 | Testing device and method for simulating backflow of propping agent |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7825073B2 (en) * | 2004-07-13 | 2010-11-02 | Halliburton Energy Services, Inc. | Treatment fluids comprising clarified xanthan and associated methods |
| US20100101793A1 (en) * | 2008-10-29 | 2010-04-29 | Symington William A | Electrically Conductive Methods For Heating A Subsurface Formation To Convert Organic Matter Into Hydrocarbon Fluids |
| CN102264862A (en) * | 2008-10-30 | 2011-11-30 | 3M创新有限公司 | Crystalline ceramic particles |
| WO2012003027A1 (en) * | 2010-06-28 | 2012-01-05 | Exxonmobil Upstream Research Company | Method and system for modeling fractures in ductile rock |
-
2012
- 2012-06-28 CN CN201210218234.4A patent/CN102720486B/en active IP Right Grant
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519961A (en) * | 2009-04-01 | 2009-09-02 | 西南石油大学 | Device and method for measuring embedding depth of proppant |
| CN201391314Y (en) * | 2009-04-01 | 2010-01-27 | 西南石油大学 | Measuring device for insert depth of proppant |
| CN201433756Y (en) * | 2009-06-02 | 2010-03-31 | 海安县石油科研仪器有限公司 | Acid-etched fracture flow diversion instrument |
| CN101892828A (en) * | 2010-05-25 | 2010-11-24 | 中国石油大学(北京) | Preparation method of anisotropic seepage medium with slits |
| CN101864949A (en) * | 2010-06-18 | 2010-10-20 | 西南石油大学 | Test device and method for simulating acid etching crack flow guide capability |
| CN102174883A (en) * | 2011-01-13 | 2011-09-07 | 东北石油大学 | Method for testing flow conductivity of self-supported crack in riverfrac treatment |
| CN102183796A (en) * | 2011-03-02 | 2011-09-14 | 西南石油大学 | Testing device and method for simulating backflow of propping agent |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102720486A (en) | 2012-10-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106437637B (en) | High temperature and pressure carbon dioxide flooding super-viscous oil visualizes microcosmos experiment method | |
| He et al. | Waterflood direction and front characterization with four-step work flow: A case study in Changqing Oil field, China | |
| Li et al. | New mathematical models for calculating proppant embedment and fracture conductivity | |
| CN104675394B (en) | Heterogeneous bottom-water reservoir three-dimensional physical simulation experimental provision and saturation degree determine method | |
| Chen et al. | Modeling foam displacement with the local-equilibrium approximation: theory and experimental verification | |
| CN104632187B (en) | A kind of method for determining production water coal bed gas well dynamic holdup | |
| WO2016078164A1 (en) | Simulation experiment system and simulation method for full process of natural gas hydrate extraction | |
| CN103527185B (en) | Horizontal well physical simulation experiment device and its experimental technique | |
| CN201218811Y (en) | Parallel board slit simulation apparatus for acid rock reaction | |
| Holditch et al. | The effects of non-Darcy flow on the behavior of hydraulically fractured gas wells | |
| Li et al. | Experimental investigation into gas production from methane hydrate in sediment by depressurization in a novel pilot-scale hydrate simulator | |
| Li et al. | Evaluation and modeling of gas permeability changes in anthracite coals | |
| CN103352693B (en) | A kind of output prediction system based on oily content and method thereof | |
| CN104594871A (en) | Device and method for simulating shale complex crack sand pavement | |
| CN103556993B (en) | Low permeability oil field plane Five-point method pattern carbon dioxide flooding emulation experiment analogy method | |
| Jiang et al. | Experimental and numerical study on hydraulic fracture propagation in coalbed methane reservoir | |
| CN105840187A (en) | Method for calculating staged fracturing productivity of compact reservoir horizontal well | |
| CN102022107B (en) | Method for establishing physical model capable of predicting waterflooding of fractured anisotropic oil reservoirs | |
| CN103048431B (en) | Hydrofracture propping agent settlement and permeability testing device | |
| CN102980828B (en) | Apparatus and method for measuring gas phase saturation degree of single tube core during foam flooding process | |
| CN102914494B (en) | Device for measuring dynamic leak-off of foam fracturing fluid and working method thereof | |
| CN104568694B (en) | Method for testing gas-water relative permeability of dense core | |
| CN102590888B (en) | Experimental device for simulating spreading of propping agent in crack and application thereof | |
| Mou et al. | Acid-etched channels in heterogeneous carbonates—a newly discovered mechanism for creating acid-fracture conductivity | |
| CN106290045B (en) | Unconventional tight sandstone reservoir oiliness and mobility evaluation experimental method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |