CN106321040A - Shale gas production increasing device and use method thereof - Google Patents
Shale gas production increasing device and use method thereof Download PDFInfo
- Publication number
- CN106321040A CN106321040A CN201611039173.XA CN201611039173A CN106321040A CN 106321040 A CN106321040 A CN 106321040A CN 201611039173 A CN201611039173 A CN 201611039173A CN 106321040 A CN106321040 A CN 106321040A
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- China
- Prior art keywords
- shale gas
- inner tube
- shale
- well
- outer tube
- 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.)
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Links
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 title abstract description 10
- 239000007789 gas Substances 0.000 claims abstract description 103
- 239000011261 inert gas Substances 0.000 claims abstract description 12
- 229910052756 noble gas Inorganic materials 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 5
- 239000002657 fibrous material Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000010025 steaming Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 abstract description 5
- 125000006850 spacer group Chemical group 0.000 abstract 2
- 238000002955 isolation Methods 0.000 description 9
- 238000000605 extraction Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 230000003245 working effect Effects 0.000 description 3
- 239000004927 clay Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/003—Insulating arrangements
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention provides a shale gas production increasing device and a use method thereof, and belongs to the technical field of shale gas exploitation. The shale gas production increasing device comprises a vapor generator, an inert gas generator, control valves, delivery pumps and an inner pipe, the inner pipe is vertically arranged in a shale gas well, the upper end of the shale gas well is closed, the inner pipe extends to the outside of the gas well from the upper end of the shale gas well, the vapor generator is communicated with the inner pipe through a delivery pipe, the inert gas generator is communicated with the shale gas well through a delivery pipe, the control valves and the delivery pumps are arranged on the delivery pipes, a heat insulation spacer is arranged between the inner pipe and the shale gas well, the lower end of the inner pipe extends to a shale bed, a vapor inlet and outlet hole is formed in the inner pipe positioned in the shale bed, the heat insulation spacer is arranged above the vapor inlet and outlet hole. The shale gas production increasing device solves the problems that an existing shale gas production increasing device is high in investment and high in operation cost, and shale gas exploitation is restricted.
Description
Technical field
The present invention relates to a kind of shale gas increasing device and method, belong to shale gas production technique field.
Background technology
Shale gas is the natural gas resource contained and be available for exploitation in rammell, is the natural resources of a kind of preciousness.Shale gas
Formation and enrichment have the feature of self uniqueness, shale gas to be to compose the sky being stored in dark-coloured mud shale layer or high-carbon mud shale layer
So gas, it can be created on each stages various of organic origin, and a part is present in shale with free phase (about 50%)
Slabbing seam, rammell hole and other reservoir space, another part is present in kerogen, clay with adsorbed state (about 50%)
Granule and clay pore surface.Shale gas is valuable resource, the energy of high-quality and industrial chemicals, can be as conventional gas
Take over the energy or the supplementary energy.
Shale gas exploitation has production life of well length and the advantage of production cycle length.Major part aerogenesis shale have a very wide distribution,
Thickness is big, and universal gassiness so that shale gas well can stablize aerogenesis chronically.But shale gas permeability of reservoir is low, exploitation
Difficulty is relatively big, and extraction rate is low.The reservoir of shale gas reservoir is typically the physical property characteristic of low hole, low-permeability, and the resistance ratios of air-flow is normal
Rule natural gas is big, and all of well is required for implementing reservoir fracturing improvement could be mined.On the other hand, shale gas extraction rate ratio
Conventional gas is low, and conventional gas recovery ratio is more than 60%, and shale gas is only 5%～60%, and yield is the lowest.Low yield shadow
Ringing people to make earnest efforts it, the increase of shale gas layer depth adds again difficulty undoubtedly in our this jejune technology,
Shale gas gas recovery facility work efficiency is low and the immature bottleneck causing present shale gas business development of technology.
In order to improve the extraction rate of shale gas, existing well stimulation mainly uses fracturing to carry out reservoir reconstruction.Its
Principle is, by ground pump truck, fracturing fluid is pumped into shaft bottom, and high pressure fracture liquid pressure break in shale gas reservoir goes out one or more
Crack, thus the seepage flow for shale gas provides more passage.Although this method adds seepage channel, make part desorbing
Shale gas flows out, but the most fundamentally accelerates the desorbing of ADSORPTION STATE shale gas, and effect of increasing production is limited, limits throughput.This page
The equipment investment of rock gas volume increase is big, operating cost is high, also limit it and extensively applies.
To sum up, shale gas extraction rate is low, yields poorly, and the investment of existing shale gas yield-increasing apparatus is big, and operating cost is high, this
Present situation governs the exploitation of shale gas, so being badly in need of now a kind of shale gas yield-increasing apparatus, not only has raising quarrying shale yield
With the function of yield, and equipment investment is little, can be cost-effective.
Summary of the invention
It is an object of the invention to: provide a kind of shale gas yield-increasing apparatus and using method thereof, to solve existing shale gas
Yield-increasing apparatus investment is big, and operating cost is high, the problem of restriction shale gas exploitation.
For solving the problems referred to above, intend using such a shale gas yield-increasing apparatus, send out including steam generator, noble gas
Raw device, control valve, delivery pump and inner tube, said inner tube is vertically arranged in shale gas well, and the upper end closed of shale gas well is interior
Pipe is extended outside gas well by the upper end of shale gas well, and described steam generator is connected with inner tube by conveying pipe, described inertia
Gas generator is connected with shale gas well by conveying pipe, and is provided with control valve and delivery pump, institute on described conveying pipe
Stating and be additionally provided with heat insulating mattress between inner tube and shale gas well, the lower end of inner tube extends rammell, and inner tube is positioned at the one of rammell
Section is provided with steam access hole, and described heat insulating mattress is arranged at the top of steam access hole, and closes on the setting of steam access hole, logical
Cross and heat insulating mattress is set is prevented from from heat insulation between inner tube and shale gas well of inner tube steam access hole vapours out
Chamber discharge, heat insulating mattress be designed to be effectively ensured the reliably working of vapours, it is ensured that the working effect of equipment, improve equipment
Work efficiency；
Between inner tube and outer tube, layer of inert is set by inert gas generator, by inert gas generator, control
Heat is transferred out by the vapours that layer of inert that noble gas valve processed and delivery pump are passed through can slow down in inner tube, thus
The heat loss of vapours can be provided, it is possible to save the energy.
In aforementioned shale gas yield-increasing apparatus, the inner side of shale gas well is provided with outer tube, the outer wall of outer tube and shale gas well
Sealing between inwall, the upper end closed of outer tube, described inert gas generator is connected with outer tube by conveying pipe, described heat insulation
Pad is arranged between outer tube and inner tube, and outer tube is positioned at one section of upper page of rammell, shale gas place and is provided with steam access hole.
In aforementioned shale gas yield-increasing apparatus, outer tube and inner tube all extend rammell, and outer tube and inner tube all with rammell phase
Connection,
In aforementioned shale gas yield-increasing apparatus, heat insulating mattress is respectively with interior inside and outside loop configuration, and heat insulating mattress
Seal between outer wall and the inwall of outer tube of pipe.
In aforementioned shale gas yield-increasing apparatus, control valve is arranged between steam generator and delivery pump, or noble gas is sent out
Between raw device and delivery pump；
In aforementioned shale gas yield-increasing apparatus, heat insulating mattress has multiple, and each heat insulating mattress is spaced apart, described heat insulating mattress by
Ceramic alumina fiber material is made, and tolerable temperature more than 1000 DEG C, cost is low, and economic and practical is strong.
Its using method is as follows: be relatively fixed inside shale gas well by outer tube, by steam generator and conveying pipe to
Inject vapours in inner tube, by the upper control valve arranged of conveying pipe and delivery pump, vapours is control effectively, make heat steaming
Vapour can be passed through inner tube rapidly, and vapours is entered in rammell by the steam access hole in inner tube and outer tube, makes rammell
Temperature raise, when specify in the range of rammell mean temperature raise designated magnitude time, such as: in shale well being
The heart, the mean temperature of the rammell in the range of radius 100m raises 10-20 when spending, stops carrying vapours to inner tube, stop to
Inner tube conveying vapours, closes shale well 5-10 days；In the most heated rammell, the resolution speed of shale gas improves, simultaneously
Shale gas expanded by heating, flows to shale well, flows into inner tube by the steam access hole on outer tube and inner tube；Open page after shale well
Rock gas can flow to ground, is collected by shale gas by collecting device.
The shale gas increasing device simple in construction of the present invention, invest little, shale gas effect of increasing production is good, by arranging control valve
With delivery pump, vapours is control effectively with noble gas input quantity, it is possible to save the energy, and by arranging heat insulating mattress
Sheet, prevents scattering and disappearing of vapours, it is ensured that the working effect of equipment, and the material of heat insulating mattress is ceramic alumina fiber, practical
Type is strong, and cost is low, has saved the cost of equipment.
Accompanying drawing explanation
Fig. 1 is the structural representation of shale gas yield-increasing apparatus of the present invention；
Fig. 2 is shale gas yield-increasing apparatus heat insulating mattress top view of the present invention.
Detailed description of the invention
The present invention will be further described below in conjunction with the accompanying drawings.
Embodiment:
Referring to figs. 1 through Fig. 2, a kind of shale gas yield-increasing apparatus that the present embodiment provides, including steam generator 1, indifferent gas
Body generator 2, control valve 3, delivery pump 4, inner tube 5, the inner side of shale gas well 6 is provided with outer tube 9, the outer wall of outer tube 9 and shale
Sealing between the inwall of gas well 6, the upper end closed of outer tube 9, said inner tube 5 is vertically arranged in outer tube 9, and inner tube 5 is by outer tube 9
Upper end extend outside gas well, described steam generator 1 by conveying pipe 7 be connected with inner tube 5, described inert gas generator
2 are connected with outer tube 9 by conveying pipe 7, and are provided with control valve 3 and delivery pump 4 on described conveying pipe 7, and control valve 3 is arranged
Between steam generator 1 and delivery pump 4, or between inert gas generator 2 and delivery pump 4, said inner tube 5 and outer tube 9 it
Between be additionally provided with heat insulating mattress 8, the lower end of inner tube 5 and outer tube 9 all extends rammell, and inner tube 5 and outer tube are positioned at rammell 11
One section on be equipped with steam access hole 10, described heat insulating mattress 8 is arranged at the top of steam access hole 10, and heat insulating mattress 8 is
Seal respectively and between the inwall of the outer wall of inner tube 5 and outer tube 9 inside and outside loop configuration, and heat insulating mattress 8, heat insulating mattress
8 have multiple, and each heat insulating mattress 8 is spaced apart, and described heat insulating mattress 8 is made up of ceramic alumina fiber material, tolerable temperature
More than 1000 DEG C.
Outer tube 9 in use, is relatively fixed inside shale gas well 6, is sent out by steam by this shale gas yield-increasing apparatus
Raw device 1 injects vapours in inner tube 5, and control valve 3 and delivery pump 4 by arranging between steam generator 1 and inner tube 5 are to heat
Steam control effectively, and enables vapours to be passed through inner tube 5 rapidly.Vapours is gone out by the steam in inner tube 5 and outer tube 9
Hand-hole enters in rammell 11, makes the temperature of rammell 11 raise, when in certain limit (such as centered by shale well, radius
The scope of 100m) the mean temperature of rammell 11 when raising certain amplitude, stop carrying vapours to inner tube 5, close shale
Well 5-10 days；In the most heated rammell 11, the resolution speed of shale gas improves, and shale gas expanded by heating simultaneously flows to page
Rock well, flows into inner tube 5 by the steam access hole on outer tube 9 and inner tube 5；After opening shale well, shale gas can flow to ground, logical
Cross collecting device can be collected by shale gas.
In the present embodiment, inert gas generator 4 is by defeated between outer tube 9 and inner tube 5 of control valve 3 and delivery pump 4
Entering noble gas, form layer of inert, heat is transferred out by the vapours that layer of inert can slow down in inner tube 5, from
And the heat loss of vapours can be provided, it is possible to save the energy, work efficiency is provided.
In the present embodiment, the sidewall of inner tube 5 has some isolation pads 8, and isolation pad 8 is positioned at the upper of steam access hole 10
Side, and close on steam access hole 10.By arrange isolation pad be prevented from from inner tube steam access hole vapours out from
Heat-insulation chamber is discharged, and the material selection of isolation pad 8 is ceramic alumina fiber, and being designed to of isolation pad is effectively ensured heat steaming
The reliably working of vapour, it is ensured that the working effect of device.The isolation pad of the present embodiment has multiple, and each isolation pad is spaced apart.
The reliability being designed to increase isolation of multiple isolation pads.
Claims (6)
1. a shale gas yield-increasing apparatus, it is characterised in that: include steam generator (1), inert gas generator (2), control
Valve (3), delivery pump (4) and inner tube (5), in said inner tube (5) is vertically arranged at shale gas well (6), shale gas well (6) upper
End seal is closed, and inner tube (5) is extended outside gas well by the upper end of shale gas well (6), and described steam generator (1) is by conveying pipe (7)
Being connected with inner tube (5), described inert gas generator (2) is connected with shale gas well (6) by conveying pipe (7), and described
It is provided with control valve (3) and delivery pump (4) in conveying pipe (7), is additionally provided with between said inner tube (5) and shale gas well (6)
Heat insulating mattress (8), the lower end of inner tube (5) extends rammell, and inner tube (5) be positioned at rammell one section is provided with steam access hole
(10), described heat insulating mattress (8) is arranged at the top of steam access hole (10).
A kind of shale gas yield-increasing apparatus, it is characterised in that: the inner side of described shale gas well (6) sets
It is equipped with outer tube (9), seals between outer wall and the inwall of shale gas well (6) of outer tube (9), the upper end closed of outer tube (9), described lazy
Property gas generator (2) be connected with outer tube (9) by conveying pipe (7), described heat insulating mattress (8) is arranged at outer tube (9) and interior
Between pipe (5), outer tube (9) also extends rammell, and outer tube (9) is positioned at one section of rammell, shale gas place upper page and is provided with steam and goes out
Hand-hole (10).
A kind of shale gas yield-increasing apparatus, it is characterised in that: heat insulating mattress (8) is loop configuration, and
Respectively and seal between the inwall of the outer wall of inner tube (5) and outer tube (9) inside and outside heat insulating mattress (8).
A kind of shale gas yield-increasing apparatus, it is characterised in that: described control valve (3) is arranged at steam
Between generator (1) and delivery pump (4), or between inert gas generator (2) and delivery pump (4).
A kind of shale gas yield-increasing apparatus, it is characterised in that: described heat insulating mattress (8) has multiple, respectively
Heat insulating mattress (8) is spaced apart, and described heat insulating mattress (8) is made up of ceramic alumina fiber material.
6. the using method of shale gas yield-increasing apparatus described in claim 2, it is characterised in that method is as follows:
First, by inert gas generator (4) to inputting noble gas between outer tube (9) and inner tube (5), noble gas is formed
Layer；
Then, in inner tube (5), inject vapours by steam generator (1) and conveying pipe (7), by setting in conveying pipe (7)
Vapours is control effectively by control valve (3) and the delivery pump (4) put, enables vapours to be passed through inner tube (5) rapidly, heat
Steam is entered in rammell (11) by the steam access hole (10) in inner tube (5) and outer tube (9), makes the temperature of rammell (11)
Raise, when the mean temperature of the rammell (11) in the range of specifying raises designated magnitude, stop steaming to inner tube (5) conveying heat
Vapour, stops carrying vapours to inner tube (5), closes shale well 5-10 days；Shale gas in the most heated rammell (11)
Resolution speed improves, and shale gas expanded by heating simultaneously flows to shale well, by the steam access hole on outer tube (9) and inner tube (5)
Flow into inner tube (5)；After opening shale well, shale gas can flow to ground, is collected by shale gas by collecting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611039173.XA CN106321040A (en) | 2016-11-24 | 2016-11-24 | Shale gas production increasing device and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611039173.XA CN106321040A (en) | 2016-11-24 | 2016-11-24 | Shale gas production increasing device and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106321040A true CN106321040A (en) | 2017-01-11 |
Family
ID=57817307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611039173.XA Pending CN106321040A (en) | 2016-11-24 | 2016-11-24 | Shale gas production increasing device and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106321040A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57128787A (en) * | 1981-02-04 | 1982-08-10 | Japan Steel Works Ltd:The | Extraction of oil of oil shales and oil sand with gaseous solvent |
| US4490237A (en) * | 1983-07-01 | 1984-12-25 | Dravo Corporation | Process for recovering heat from the combustion of residual carbon in oil depleted shale |
| CN202991002U (en) * | 2012-06-29 | 2013-06-12 | 中国石油大学(北京) | Shale gas output increasing equipment |
| CN103408292A (en) * | 2013-07-26 | 2013-11-27 | 山东大学 | Preparation method for alumina-zirconia ceramic fiber |
| CN105443097A (en) * | 2016-01-06 | 2016-03-30 | 浙江科技学院 | Shale gas yield increasing device |
| CN206220938U (en) * | 2016-11-24 | 2017-06-06 | 贵州大学 | A kind of shale gas yield-increasing apparatus |
-
2016
- 2016-11-24 CN CN201611039173.XA patent/CN106321040A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57128787A (en) * | 1981-02-04 | 1982-08-10 | Japan Steel Works Ltd:The | Extraction of oil of oil shales and oil sand with gaseous solvent |
| US4490237A (en) * | 1983-07-01 | 1984-12-25 | Dravo Corporation | Process for recovering heat from the combustion of residual carbon in oil depleted shale |
| CN202991002U (en) * | 2012-06-29 | 2013-06-12 | 中国石油大学(北京) | Shale gas output increasing equipment |
| CN103408292A (en) * | 2013-07-26 | 2013-11-27 | 山东大学 | Preparation method for alumina-zirconia ceramic fiber |
| CN105443097A (en) * | 2016-01-06 | 2016-03-30 | 浙江科技学院 | Shale gas yield increasing device |
| CN206220938U (en) * | 2016-11-24 | 2017-06-06 | 贵州大学 | A kind of shale gas yield-increasing apparatus |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20170111 |