CN205297512U - Shale gas raising output device - Google Patents
Shale gas raising output device Download PDFInfo
- Publication number
- CN205297512U CN205297512U CN201620007184.9U CN201620007184U CN205297512U CN 205297512 U CN205297512 U CN 205297512U CN 201620007184 U CN201620007184 U CN 201620007184U CN 205297512 U CN205297512 U CN 205297512U
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- Prior art keywords
- shale gas
- steam
- gas
- increasing device
- house steward
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- 206010015137 Eructation Diseases 0.000 title abstract 3
- 230000001965 increasing effect Effects 0.000 claims abstract description 40
- 239000007789 gas Substances 0.000 claims description 135
- 230000032258 transport Effects 0.000 claims description 33
- 238000009413 insulation Methods 0.000 claims description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 229910052756 noble gas Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000002347 injection Methods 0.000 abstract description 5
- 239000007924 injection Substances 0.000 abstract description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 26
- 238000000034 method Methods 0.000 description 13
- 239000011148 porous material Substances 0.000 description 7
- 238000001179 sorption measurement Methods 0.000 description 6
- 230000036772 blood pressure Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000005325 percolation Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000000638 stimulation Effects 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The utility model discloses a shale gas raising output device, including steam generator, with steam generator's intercommunication steam transportation house steward and raising the output subassembly, each increases production the subassembly and includes: the outer tube, set up in the shale gas well and with shale gas well relatively fixed, inner tube, endotheca are on the outer tube, and inner tube and outer tube all have the steam access hole with the part that the rammell corresponds, the delivery pump, export and inner tube intercommunication, branch pipe and steam transportation house steward intercommunication are carried through steam to the entry, the first control valve for branch pipe and steam transportation house steward's break -make is carried to control steam. The utility model discloses a setting up steam transportation house steward and multiunit raising the output subassembly and can being a plurality of shale gas wells injection vapours simultaneously, and can control the raising the output subassembly of each shale gas well department through the first control valve, whole device only needs a steam generator, just can practice thrift the cost that installs greatly for the heat supply of a plurality of shale gas well, shale gas raising output device simple structure, the investment is little, shale gas yield increasing effect is good.
Description
Technical field
This utility model relates to shale gas production technique, is specifically related to shale gas increasing device.
Background technology
Shale gas is to compose the natural gas being stored in dark-coloured mud shale layer or high-carbon mud shale layer, it can be created on each stages various of organic origin, a natural gas part is present in crack, rammell, rammell hole and other reservoir space with free phase (about 50%), and another part is present in kerogen, clay particle and clay pore surface with adsorbed state (about 50%). Shale gas is valuable resource, the energy of high-quality and industrial chemicals, can take over the energy or the supplementary energy as conventional gas.
The exploitation of existing shale gas mainly rely on himself desorbing, after gas production a period of time, the yield dramatic drop-off of shale gas, the effect of shale gas exploitation is undesirable, yield poorly, yield unstable, it is impossible to reach commercial development standard. The reason that shale gas exploitation gas production is low is mainly: compared with conventional gas, the storing mode of shale gas is to be adsorbed as master, reservoir energy low (pressure is low), poor permeability, the output process of shale gas is first desorbing, then seepage flow in pore media. Only rely on the significantly high gas production of the more difficult acquisition of self desorbing and recovery ratio, it is necessary to find and study the new method improving exploitation rate (or daily output tolerance) and recovery ratio.
In order to improve the recovery ratio of shale gas, when shale gas opens yield lower than commercial development standard (individual well 1000 meters 3/ day), well stimulation can be taked. Existing well stimulation mainly adopts 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, making the shale gas of part desorbing flow out, but fundamentally do not accelerate the desorbing of ADSORPTION STATE shale gas, effect of increasing production is limited.The equipment investment of this shale gas volume increase is big, operating cost is high, also limit its extensive use.
Additionally, also have a kind of method for increasing for shale gas: CO2 absorption method, the method is to utilize CO2 to have the adsorptivity higher than methane (CH4), injects CO2 to rammell, squeezes methane or change its characterization of adsorption. This method must also suitably blood pressure lowering, CH4 desorbing in pressure reduction, CO2 has strong adsorptivity and occupies the position of CH4, so that CH4 keeps free state. Detailed process is: producing well drives a well blood pressure lowering, injects well and injects CO2, and after blood pressure lowering, CH4 desorbing is free state, and CO2 adsorbs. Then increasing injection pressure, CH4 is along rammell flow of pore from gas well output. After producing a period of time according to the method described above, blood pressure lowering again, carry out injection and the output of next circulation. But owing to pressure reduction is at producing well, and CO2 is injecting well injection, cause that the competition of CH4 and CO2 occurs when being likely to different, additionally, due to the iterative cycles of boosting with blood pressure lowering, shorten the effective time that shale gas produces, daily output tolerance therefore can not be significantly increased very much. And this method for increasing equipment is complicated, preparation cost is high, also makes it only stay in the laboratory research stage.
In sum, the investment of prior art shale gas increasing device is big, and operation cost is high.
Utility model content
This utility model is for the problems referred to above, it is proposed that a kind of shale gas increasing device. Solve the investment of prior art shale gas increasing device big, the problem that operation cost is high.
The technical scheme that this utility model is taked is as follows:
A kind of shale gas increasing device, including the vapor transport house steward of steam generator and the outlet of steam generator, and many group volume increase assemblies; Each volume increase assembly all includes:
Outer tube, is arranged in shale gas well, and is relatively fixed with the medial wall of shale gas well;
Interior pipe, is inside enclosed within described outer tube and stretches in shale gas well, and the inner and outer tubes part corresponding with rammell is respectively provided with steam access hole;
Delivery pump, outlet connects with said inner tube, and entrance is connected with described vapor transport house steward by steam conveying arm;
First controls valve, for controlling the break-make of steam conveying arm and vapor transport house steward.
The principle of shale gas increasing device: shale gas is usually present in rammell pore surface with adsorbed state, its output at least will through desorbing, diffusion and three processes of seepage flow, and wherein desorption rate and percolation flow velocity are the principal elements determining aerogenesis speed. By injecting heat energy to rock stratum, shale gas place, increase the free energy of ADSORPTION STATE shale gas (methane), thus improving methane from the speed of desorbing the pore surface of rammell; Simultaneously shale gas expanded by heating accelerates seepage flow flowing, thus reach to increase substantially shale gas yield, the purpose of the industrialized developing that realizes shale gas.
During the work of shale gas increasing device, vapours is injected by the inside pipe of steam generator, vapours is penetrated in rammell by steam access hole, realize heat transmission and make shale gas institute rammell temperature raise, make the desorbing rapidly of the shale gas (methane) in ADSORPTION STATE being adsorbed on rammell, become free state. Along with heat transmits to deep, rammell, a large amount of shale gas desorbings are free state, the shale gas of free state expanded by heating again. When opening well and making production, the rapid output of shale gas of these free states, pipe in dimly being entered by the steam access hole of outer tube and interior pipe, arrive ground eventually through interior pipe, import gas pipeline. Shale gas increasing device simple in construction of the present utility model, invest little, shale gas effect of increasing production is good; The application can inject vapours for multiple shale gas wells by arranging vapor transport house steward and many group volume increase assemblies simultaneously, and the volume increase assembly at each shale gas well place can be controlled by the first control valve, whole device has only to a steam generator, can be just multiple shale gas well heat supplies, be greatly saved the cost of device.
Further, described first control valve is arranged on described steam conveying arm.
Further, the medial wall of said inner tube or lateral wall have thermal insulation layer.
Further, the medial wall of described outer tube has thermal insulation layer.
It is prevented from heat loss, it is possible to save the energy, work efficiency is provided by arranging thermal insulation layer.
Further, also include source of the gas, and the insulated gas transport house steward connected with source of the gas, it is heat-insulation chamber between lateral wall and the medial wall of outer tube of said inner tube, described heat-insulation chamber transports arm by insulated gas and connects with described insulated gas transport house steward, and shale gas increasing device also includes the second control valve for controlling insulated gas transport arm and described insulated gas transport house steward's break-make.
Heat is transferred out by the vapours that can slow down in interior pipe by source of the gas passes into heat-insulation chamber such that it is able to provide the heat loss of vapours, it is possible to saves the energy, provide work efficiency.
Further, described second control valve is arranged on insulated gas transport arm.
Further, described source of the gas is noble gas source or Nitrogen source gases.
Further, the sidewall of said inner tube has some shading rings, and described shading ring is positioned at the top of steam access hole, and closes on described steam access hole.
Be prevented from discharging from interior pipe steam access hole vapours out from heat-insulation chamber by arranging shading ring, shading ring be designed to be effectively ensured the reliably working of vapours, it is ensured that the working effect of device.
Further, described shading ring has multiple, and each shading ring is spaced apart.
The reliability being designed to increase isolation of multiple shading rings
Further, the bottom of said inner tube has centralizer.
The beneficial effects of the utility model are: can inject vapours for multiple shale gas wells by arranging vapor transport house steward and many group volume increase assemblies simultaneously, and the volume increase assembly at each shale gas well place can be controlled by the first control valve, whole device has only to a steam generator, can be just multiple shale gas well heat supplies, be greatly saved the cost of device; Shale gas increasing device simple in construction, invest little, shale gas effect of increasing production is good.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of this utility model shale gas increasing device;
Fig. 2 is schematic diagram during this utility model shale gas increasing device injection steam;
Fig. 3 is schematic diagram during this utility model shale gas increasing device opening well and making production.
In figure, each accompanying drawing is labeled as:
1, steam generator, 2, first controls valve, and 3, vapor transport house steward, 4, delivery pump, 5, interior pipe, 6, second controls valve, 7, source of the gas, 8, insulated gas transport house steward, 9, outer tube, 10, heat-insulation chamber, 11, shading ring, 12, centralizer, 13, steam conveying arm, 14, insulated gas transport arm, 15, volume increase assembly.
Detailed description of the invention:
Below in conjunction with each accompanying drawing, this utility model is described in detail.
As it is shown in figure 1, a kind of shale gas increasing device, including the vapor transport house steward 3 of steam generator 1 and the outlet of steam generator, and many group volume increase assemblies 15; Each volume increase assembly 15 all includes:
Outer tube 9, is arranged in shale gas well, and is relatively fixed with the medial wall of shale gas well;
Interior pipe 5, inner sleeve is on outer tube 9 and stretches in shale gas well, and the inner and outer tubes part corresponding with rammell is respectively provided with steam access hole (not shown in FIG.);
Delivery pump 4, outlet connects with interior pipe 5, and entrance is connected with vapor transport house steward 3 by steam conveying arm 13;
First controls valve 2, and for controlling the break-make of steam conveying arm and vapor transport house steward, the first of the present embodiment controls valve 2 and be arranged on steam conveying arm 13.
In order to reduce heat loss when practice, it is possible to arrange thermal insulation layer in the medial wall of interior pipe 5 or lateral wall, it is possible to arrange thermal insulation layer in the medial wall of outer tube. It is prevented from heat loss, it is possible to save the energy, work efficiency is provided by arranging thermal insulation layer.
As shown in Figure 1, in the present embodiment, shale gas increasing device also includes source of the gas 7, and the insulated gas transport house steward 8 connected with source of the gas, it is heat-insulation chamber 10 between lateral wall and the medial wall of outer tube of interior pipe, heat-insulation chamber 10 transports house steward 8 by insulated gas transport arm 14 with insulated gas and connects, shale gas increasing device also includes the second control valve 6 for controlling insulated gas transport arm and insulated gas transport house steward's break-make, in the present embodiment, second controls valve 6 is arranged on insulated gas transport arm 14. Heat is transferred out by the vapours that can slow down in interior pipe by source of the gas passes into heat-insulation chamber such that it is able to provide the heat loss of vapours, it is possible to saves the energy, provide work efficiency.
In the present embodiment, source of the gas 7 is noble gas source or Nitrogen source gases.
In the present embodiment, the sidewall of interior pipe 5 has some shading rings 11, and shading ring 11 is positioned at the top of steam access hole, and closes on steam access hole. Be prevented from discharging from interior pipe steam access hole vapours out from heat-insulation chamber by arranging shading ring, shading ring be designed to be effectively ensured the reliably working of vapours, it is ensured that the working effect of device.
The shading ring of the present embodiment has multiple, and each shading ring is spaced apart. The reliability being designed to increase isolation of multiple shading rings
In the present embodiment, the bottom of interior pipe 5 has centralizer 12.
The principle of the present embodiment shale gas increasing device: shale gas is usually present in rammell pore surface with adsorbed state, its output at least will through desorbing, diffusion and three processes of seepage flow, and wherein desorption rate and percolation flow velocity are the principal elements determining aerogenesis speed. By injecting heat energy to rock stratum, shale gas place, increase the free energy of ADSORPTION STATE shale gas (methane), thus improving methane from the speed of desorbing the pore surface of rammell; Simultaneously shale gas expanded by heating accelerates seepage flow flowing, thus reach to increase substantially shale gas yield, the purpose of the industrialized developing that realizes shale gas.
During the work of shale gas increasing device, vapours is injected by the inside pipe of steam generator, vapours is penetrated in rammell by steam access hole, realize heat transmission and make shale gas institute rammell temperature raise, make the desorbing rapidly of the shale gas (methane) in ADSORPTION STATE being adsorbed on rammell, become free state. Along with heat transmits to deep, rammell, a large amount of shale gas desorbings are free state, the shale gas of free state expanded by heating again, see Fig. 2. When opening well and making production, the rapid output of shale gas of these free states, pipe in dimly being entered by the steam access hole of outer tube and interior pipe, arrive ground eventually through interior pipe, import gas pipeline, see Fig. 3.
Shale gas increasing device simple in construction of the present utility model, invest little, shale gas effect of increasing production is good; The application can inject vapours for multiple shale gas wells by arranging vapor transport house steward and many group volume increase assemblies simultaneously, and the volume increase assembly at each shale gas well place can be controlled by the first control valve, whole device has only to a steam generator, can be just multiple shale gas well heat supplies, be greatly saved the cost of device.
The foregoing is only preferred embodiment of the present utility model; not thereby scope of patent protection of the present utility model is namely limited; the equivalent structure transformation that every utilization this utility model description and accompanying drawing content are made; directly or indirectly it is used in other relevant technical fields, all in like manner includes in protection domain of the present utility model.
Claims (10)
1. a shale gas increasing device, it is characterised in that include the vapor transport house steward of the outlet of steam generator and steam generator and many group volume increase assemblies; Each volume increase assembly all includes:
Outer tube, is arranged in shale gas well, and is relatively fixed with the medial wall of shale gas well;
Interior pipe, is inside enclosed within described outer tube and stretches in shale gas well, and the inner and outer tubes part corresponding with rammell is respectively provided with steam access hole;
Delivery pump, outlet connects with said inner tube, and entrance is connected with described vapor transport house steward by steam conveying arm;
First controls valve, for controlling the break-make of steam conveying arm and vapor transport house steward.
2. shale gas increasing device as claimed in claim 1, it is characterised in that described first controls valve is arranged on described steam conveying arm.
3. shale gas increasing device as claimed in claim 1, it is characterised in that medial wall or the lateral wall of said inner tube have thermal insulation layer.
4. shale gas increasing device as claimed in claim 1, it is characterised in that the medial wall of described outer tube has thermal insulation layer.
5. shale gas increasing device as claimed in claim 1, it is characterized in that, also include source of the gas, and the insulated gas transport house steward connected with source of the gas, it is heat-insulation chamber between lateral wall and the medial wall of outer tube of said inner tube, described heat-insulation chamber transports arm by insulated gas and connects with described insulated gas transport house steward, and shale gas increasing device also includes the second control valve for controlling insulated gas transport arm and described insulated gas transport house steward's break-make.
6. shale gas increasing device as claimed in claim 5, it is characterised in that described second controls valve is arranged on insulated gas transport arm.
7. shale gas increasing device as claimed in claim 5, it is characterised in that described source of the gas is noble gas source or Nitrogen source gases.
8. shale gas increasing device as claimed in claim 5, it is characterised in that the sidewall of said inner tube has some shading rings, and described shading ring is positioned at the top of steam access hole, and closes on described steam access hole.
9. shale gas increasing device as claimed in claim 8, it is characterised in that described shading ring has multiple, and each shading ring is spaced apart.
10. shale gas increasing device as claimed in claim 1, it is characterised in that the bottom of said inner tube has centralizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620007184.9U CN205297512U (en) | 2016-01-06 | 2016-01-06 | Shale gas raising output device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620007184.9U CN205297512U (en) | 2016-01-06 | 2016-01-06 | Shale gas raising output device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205297512U true CN205297512U (en) | 2016-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620007184.9U Expired - Fee Related CN205297512U (en) | 2016-01-06 | 2016-01-06 | Shale gas raising output device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205297512U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443097A (en) * | 2016-01-06 | 2016-03-30 | 浙江科技学院 | Shale gas yield increasing device |
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2016
- 2016-01-06 CN CN201620007184.9U patent/CN205297512U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443097A (en) * | 2016-01-06 | 2016-03-30 | 浙江科技学院 | Shale gas yield increasing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20160608 Termination date: 20200106 |
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| CF01 | Termination of patent right due to non-payment of annual fee |