CN106837285A - A kind of high temp jet strengthens liquid nitrogen vaporization fracturing process and device - Google Patents
A kind of high temp jet strengthens liquid nitrogen vaporization fracturing process and device Download PDFInfo
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- CN106837285A CN106837285A CN201710043087.4A CN201710043087A CN106837285A CN 106837285 A CN106837285 A CN 106837285A CN 201710043087 A CN201710043087 A CN 201710043087A CN 106837285 A CN106837285 A CN 106837285A
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- liquid nitrogen
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- vaporization
- high temp
- pipeline
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 132
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 66
- 239000007788 liquid Substances 0.000 title claims abstract description 64
- 238000009834 vaporization Methods 0.000 title claims abstract description 24
- 230000008016 vaporization Effects 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000008569 process Effects 0.000 title claims abstract description 9
- 239000012530 fluid Substances 0.000 claims abstract description 31
- 239000007789 gas Substances 0.000 claims abstract description 20
- 230000004907 flux Effects 0.000 claims description 17
- 238000004544 sputter deposition Methods 0.000 claims description 16
- 239000003082 abrasive agent Substances 0.000 claims description 6
- 238000003032 molecular docking Methods 0.000 claims description 5
- 238000004033 diameter control Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 230000002929 anti-fatigue Effects 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000011496 polyurethane foam Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000005520 cutting process Methods 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract 1
- 238000004064 recycling Methods 0.000 abstract 1
- 239000007921 spray Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 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
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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)
Abstract
The invention discloses a kind of high temp jet reinforcing liquid nitrogen vaporization fracturing process and device, it is mainly using the method exploitation shale gas of liquid nitrogen vaporization pressure break：Horizontal well is first cut into branch fractures by high-temperature high-pressure jet-flow, underground is set to form " rich " font fissured structure, then liquid nitrogen is injected to underground by liquid nitrogen pipes, recycling nozzle to spray high temperature fluid makes liquid nitrogen rapid vaporization, it is converted into nitrogen, hyperbaric environment is produced, pressure break shale is often saved body and is attached by self-locking structure and electromagnet and can realize that often section body works independently by control module.This fracturing device need to only preheat base fluid, when base fluid passes through nozzle, high temperature is heated rapidly to by the electrically-heated coil at nozzle, and cone structure and vortex guide groove by nozzle can accelerate pressurization to rapidly fluid in jet hole, improve cutting dynamics.Release liquid nitrogen and high temp jet alternately and repeatedly, complete pressure break task.Pressure break efficiency high of the present invention, saving water resource, environmental protection.
Description
Technical field
The present invention relates to shale gas pressure break exploitation field, liquid nitrogen vaporization pressure break is strengthened in particular to a kind of high temp jet
Method and apparatus.
Background technology
Influence with traditional conventional energy resource to ecological environment, and can production of resources limitation less and less, some are new
The energy has been increasingly becoming the focus in the world.But most of new energy availability is low, produce high cost, is to restrict new energy now
The principal element of development.Shale gas are a kind of unconventional natural gas resources, and its feature is that production life of well is long, the production cycle
It is long, cleaning, efficient, widely used.China's shale gas workable reserves ranks first in the world, therefore extremely has Development volue.But
It is that the exploitation of shale gas now also has many restrictions, and it is mainly reflected in two aspects：1. shale gas reservoir permeability is low,
Exploitation difficulty is big, yields poorly；2. conventional shale gas recovery method needs to consume substantial amounts of water resource, easily causes pollution and wastes.
Therefore, in shale gas exploitation field, for problem above, can greatly improve production capacity and can break away to traditional resource dependence
Shale gas exploitation technology very there is researching value, all have to the exploitation of China shale gas and commercialized development highly important
Meaning.
The content of the invention
In order to solve the above-mentioned technical problem, the invention provides a kind of high temp jet reinforcing liquid nitrogen vaporization fracturing process and dress
Put.
The technical solution adopted in the present invention is：A kind of high temp jet strengthens liquid nitrogen vaporization fracturing process, and it mainly includes
Following steps：
S1：Tube-shaped sputtering device is connected with each other by attachment structure and is reinforced first and by electromagnet；
S2：Tube-shaped sputtering device adds base fluid of the filling with abrasive material in connecting backward high-temperature heat flux pipeline, leads to in liquid nitrogen pipes
Liquid nitrogen；
Preferably, it is provided with insulating layer between high-temperature heat flux pipeline and liquid nitrogen pipes.
S3：Hot-fluid valve is opened by control module control merogenesis, when base fluid passes through nozzle, the electrically-heated coil at depending nozzle is fast
Speed heating pressurization, accelerates to be sprayed from nozzle through being vortexed guide groove, cuts shale.
S4：After branch's hole is produced, hot-fluid valve is closed through control module, open low temperature control valve, liquid nitrogen is by liquid nitrogen
Flow export flows out, injection branch hole；Control module turns off low temperature control valve, opens hot-fluid valve, the high temperature sprayed by nozzle
Gas makes liquid nitrogen rapid vaporization, produces hyperbaric environment, and shale pressure break efficiency is improved in increase shale crack.
Preferably, the release liquid nitrogen described in step S4 is alternately and repeatedly carried out with high temp jet, is increased, is increased shale sky
Gap, promotes the infiltration of shale gas, improves shale gas yield.
A kind of high temp jet strengthens liquid nitrogen vaporization fracturing device, it is characterised in that：A kind of high temp jet strengthens liquid nitrogen vaporization
The main interconnection by tube-shaped sputtering device of fracturing device forms.
Preferably, the tube-shaped sputtering device is main by pipeline, control module, control valve, nozzle, attachment structure five
It is grouped into.
Preferably, tube-shaped sputtering device body maximum gauge is between 90cm-100cm, body is long between 2m-3m.
Preferably, the agent structure of tube-shaped sputtering device pipe shaft is by intensity is high, antifatigue, magnetizable alloy material system
Into (such as：A3Q235D steel).
Preferably, the pipeline portions are mainly made up of high-temperature heat flux pipeline and liquid nitrogen pipes two parts.High-temperature heat flux
Pipeline is inner tube, and diameter control is in 35cm-40cm.Based on oil base or gel base, base fluid is heated to the carrier of high-temperature heat flux
500-1000 DEG C, abrasive material is alumina powder of the diameter less than 1mm.Liquid nitrogen pipes are outer layer pipe, are wrapped in high-temperature heat flux pipe,
Diameter control is in 65cm-70cm or so.
Preferably, being provided with insulating layer between high-temperature heat flux pipeline and liquid nitrogen pipes (such as：It is polyurethane foam plastics, many
Depth aluminium film etc.).
Preferably, the control module is the master control system of whole system, it is made up of microcomputer, controls each portion
The work for dividing.
Preferably, the control valve is by control module control, can independent control high-temperature heat flux pipe switch and liquid nitrogen pipe
The switch in road.
Preferably, the nozzle is made up of two parts：One is to be connected with liquid nitrogen pipes discharge liquid nitrogen, bore dia
About in 8cm-10cm or so, surrounding is uniformly distributed four；The second is cone structure nozzle, indoor design has vortex guide groove and electric heating
Coil is connected with hot-fluid pipeline, can heat, speedup, pressure fluid, carries out jet, uniform four of surrounding.
Preferably, the attachment structure is made up of docking structure and electromagnet two parts.Docking structure is circular cone self-locking
Structure, each tube-shaped sputtering device body is divided into front end interface and back end interface.Front end interface is designed as male-tapered structure, and preceding
One inner conical back end interface of body is connected, and forms self-locking structure.
Preferably, each back end interface is equipped with an electromagnet controlled by control module to be used to reinforce two pipes
The connection of body.Further, docking port is provided with circuit terminal, it is ensured that circuit connection and control between each body.
The beneficial effects of the invention are as follows：
1. the present invention realizes shale gas exploitation using the method for liquid nitrogen vaporization pressure break, and efficiency high being capable of saving water resource.It is logical
Cross liquid nitrogen pipes and inject a certain amount of liquid nitrogen to underground, then spraying high temperature fluid by nozzle absorbs heat, and makes the rapid vapour of liquid nitrogen
Change, be converted into nitrogen, hyperbaric environment, pressure break shale are manufactured rapidly.Horizontal well is cut branch fractures by high-temperature high-pressure jet-flow, makes well
Lower formation " rich " font structure, then by liquid nitrogen pressure break.Alternately and repeatedly, efficient fracturing effect is realized, improves yield to meet life
Producing needs.
2. often section body can independently be realized controlling the switch of fluid the present invention, save the use of traditional separator,
Simplify construction procedure, improve operating efficiency.Each section body self-locking structure and electromagnet are attached, compared to conventional coupling arrangement
For, more convenient, safety of constructing.The cone structure and vortex guide groove of nozzle can accelerate rapidly in jet hole to fluid
Pressure, improves cutting dynamics.
3. the present invention has broken conventional high-temperature high-pressure jet needs to make the limitation of heating fluid, only need to tentatively heat, logical
When crossing nozzle, heated rapidly by the electrically-heated coil at nozzle.So can both have with energy saving can reduce liquid nitrogen and high temperature
Influence between hot-fluid.
Brief description of the drawings
Fig. 1 is tube-shaped sputtering apparatus structure schematic diagram of the present invention；
Fig. 2 is the top view of tube-shaped sputtering device of the present invention；
Fig. 3 is the structure schematic diagram of nozzle of the present invention；
Fig. 4 is the connection diagram of tube-shaped sputtering device of the present invention.
Brief description of the drawings：1- high-temperature heat flux pipeline 2- liquid nitrogen pipes 3- insulating layer 4- master control system 5- control modules 6- electricity
Road terminal 7- electromagnet 8- cone structure nozzle 9- liquid nitrogen flow export 10- attachment structures 11- vortex guide groove 12- heating wires
Circle
Specific embodiment
1-4, is described further to technical scheme below in conjunction with the accompanying drawings.The embodiment is shown in the accompanying drawings
Go out, wherein same or similar label represents same or similar element or the unit with same or like function from start to finish
Part, but the description is only used for the explanation present invention, and be not considered as limiting the invention.
A kind of high temp jet strengthens liquid nitrogen vaporization fracturing process and device, and specific embodiment is comprised the following steps：
Step S1, each section body is connected with each other by attachment structure (10) and is reinforced by electromagnet (7)；
Step S2, connects the logical base fluid for being loaded with abrasive material in the high-temperature heat flux pipeline (1) of backward pipeline, to liquid nitrogen pipes (2)
In lead to liquid nitrogen；
Special instruction, is protected between high-temperature heat flux pipeline (1) and liquid nitrogen pipes (2) by insulating layer (3).
The base fluid and liquid nitrogen that are loaded with abrasive material described in above-mentioned steps S2 are produced by ground fracturing device.
Step S3, merogenesis opens hot-fluid valve (being controlled by control module 5), when base fluid passes through nozzle (8), what depending nozzle went out
Electrically-heated coil (12) heating pressurization rapidly, accelerates to be sprayed from nozzle through being vortexed guide groove (11), cuts shale；
Step S4, after branch's hole is produced, closes hot-fluid valve, opens low temperature control valve (being controlled by control module 5),
Liquid nitrogen is flowed out by liquid nitrogen flow export (9), in injection branch hole；Low temperature control valve is turned off, hot-fluid valve is opened, is sprayed by nozzle
High-temperature gas make liquid nitrogen rapid vaporization, produce hyperbaric environment, shale pressure break efficiency is improved in increase shale crack.
Release liquid nitrogen described in above-mentioned steps S4 is alternately and repeatedly carried out with high temp jet, is increased, is increased shale space,
Promote the infiltration of shale gas, improve shale gas yield.
Claims (9)
1. a kind of high temp jet strengthens liquid nitrogen vaporization fracturing process, it is characterised in that comprise the following steps：
S1：Tube-shaped sputtering device is connected with each other by attachment structure and is reinforced first and by electromagnet；
S2：Tube-shaped sputtering device adds base fluid of the filling with abrasive material in connecting backward high-temperature heat flux pipeline, to logical liquid in liquid nitrogen pipes
Nitrogen；
S3：Hot-fluid valve is opened by control module control merogenesis, when base fluid passes through nozzle, the electrically-heated coil at depending nozzle adds rapidly
Heat pressurization, accelerates to be sprayed from nozzle through being vortexed guide groove, cuts shale；
S4：After branch's hole is produced, hot-fluid valve is closed through control module, open low temperature control valve, liquid nitrogen is flowed out by liquid nitrogen
Mouth outflow, injection branch hole；Control module turns off low temperature control valve, opens hot-fluid valve, the high-temperature gas sprayed by nozzle
Make liquid nitrogen rapid vaporization, produce hyperbaric environment, shale pressure break efficiency is improved in increase shale crack.
2. a kind of high temp jet according to claim 1 strengthens liquid nitrogen vaporization fracturing process, it is characterised in that the step
Release liquid nitrogen described in rapid S4 is alternately and repeatedly carried out with high temp jet, is increased, is increased shale space, promotes oozing for shale gas
Thoroughly, shale gas yield is improved.
3. a kind of high temp jet according to claim 1 strengthens liquid nitrogen vaporization fracturing process, it is characterised in that the height
The carrier of stream is warmed based on oil base or gel base, base fluid is heated to 500-1000 DEG C, and abrasive material is oxidation of the diameter less than 1mm
Aluminium powder.
4. a kind of high temp jet strengthens liquid nitrogen vaporization fracturing device, it is characterised in that the fracturing device is main by tube-shaped sputtering
Device is connected with each other and forms；The tube-shaped sputtering device is main by pipeline, control module, control valve, nozzle, attachment structure five
It is grouped into.
5. a kind of high temp jet according to claim 4 strengthens liquid nitrogen vaporization fracturing device, it is characterised in that the pipe
Shape injection apparatus body maximum gauge is between 90cm-100cm, and body is long between 2m-3m；The master of tube-shaped sputtering device pipe shaft
Body structure is by intensity is high, antifatigue, magnetizable alloy material is made (such as：A3Q235D steel).
6. a kind of high temp jet according to claim 5 strengthens liquid nitrogen vaporization fracturing device, and the pipeline portions are main
It is made up of high-temperature heat flux pipeline and liquid nitrogen pipes two parts；High-temperature heat flux pipeline is inner tube, and diameter control is in 35cm-40cm；Liquid
Nitrogen pipeline is outer layer pipe, is wrapped in high-temperature heat flux pipe, and diameter control is in 65cm-70cm or so；High-temperature heat flux pipeline and liquid nitrogen
Insulating layer is provided between pipeline (such as：Polyurethane foam plastics, many depth aluminium films etc.).
7. a kind of high temp jet according to claim 5 strengthens liquid nitrogen vaporization fracturing device, and the control module is whole
The master control system of individual system, is made up of microcomputer, controls the work of various pieces；Preferably, the control valve is by controlling
Molding block is controlled, can independent control high-temperature heat flux pipe switch and liquid nitrogen pipes switch.
8. a kind of high temp jet according to claim 5 strengthens liquid nitrogen vaporization fracturing device, and the nozzle is by two parts
Composition：One is to be connected with liquid nitrogen pipes discharge liquid nitrogen, about in 8cm-10cm or so, surrounding is uniformly distributed four to bore dia
It is individual；The second is cone structure nozzle, indoor design has vortex guide groove and electrically-heated coil to be connected with hot-fluid pipeline, can heat, speedup,
Pressure fluid, carries out jet, uniform four of surrounding.
9. a kind of high temp jet according to claim 5 strengthens liquid nitrogen vaporization fracturing device, and the attachment structure is by right
Binding structure and electromagnet two parts are constituted；Docking structure is circular cone self-locking structure, and each tube-shaped sputtering device body is divided into front end
Interface and back end interface；Front end interface is designed as male-tapered structure, is connected with the inner conical back end interface of previous body, and shape
Into self-locking structure；Each back end interface is equipped with an electromagnet controlled by control module to be used to reinforce two companies of body
Connect；Further, docking port is provided with circuit terminal, it is ensured that circuit connection and control between each body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710043087.4A CN106837285A (en) | 2017-01-19 | 2017-01-19 | A kind of high temp jet strengthens liquid nitrogen vaporization fracturing process and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710043087.4A CN106837285A (en) | 2017-01-19 | 2017-01-19 | A kind of high temp jet strengthens liquid nitrogen vaporization fracturing process and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106837285A true CN106837285A (en) | 2017-06-13 |
Family
ID=59119388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710043087.4A Pending CN106837285A (en) | 2017-01-19 | 2017-01-19 | A kind of high temp jet strengthens liquid nitrogen vaporization fracturing process and device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420077A (en) * | 2017-09-06 | 2017-12-01 | 中国矿业大学(北京) | One kind is based on high energy CO2The shale oil recovery method and device of fluid fracturing |
| CN107605441A (en) * | 2017-08-16 | 2018-01-19 | 西安石油大学 | A kind of apparatus and method that liquid nitrogen is introduced to open hole well |
| CN109707360A (en) * | 2018-12-06 | 2019-05-03 | 中国矿业大学 | A kind of compound fracturing method of high pressure nitrogen-low temperature liquid nitrogen for frscturing |
| CN112377162A (en) * | 2020-10-12 | 2021-02-19 | 重庆交通大学 | Method and spray head for crushing hot dry rock by liquid nitrogen cold impact composite high-pressure water jet |
| CN114575818A (en) * | 2022-03-31 | 2022-06-03 | 中国石油大学(北京) | Fracturing method based on gas-liquid driving pulse |
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| CN105822275A (en) * | 2016-01-12 | 2016-08-03 | 中国石油大学(华东) | Fracturing fracture-forming technique and method for shale |
| CN106285605A (en) * | 2016-11-01 | 2017-01-04 | 中国矿业大学 | A kind of microwave liquid nitrogen works in coordination with freeze thawing coal seam anti-reflection method |
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2017
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107605441A (en) * | 2017-08-16 | 2018-01-19 | 西安石油大学 | A kind of apparatus and method that liquid nitrogen is introduced to open hole well |
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| CN109707360A (en) * | 2018-12-06 | 2019-05-03 | 中国矿业大学 | A kind of compound fracturing method of high pressure nitrogen-low temperature liquid nitrogen for frscturing |
| CN112377162A (en) * | 2020-10-12 | 2021-02-19 | 重庆交通大学 | Method and spray head for crushing hot dry rock by liquid nitrogen cold impact composite high-pressure water jet |
| CN114575818A (en) * | 2022-03-31 | 2022-06-03 | 中国石油大学(北京) | Fracturing method based on gas-liquid driving pulse |
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Application publication date: 20170613 |