CN106351615A - Hydrate production method assisted by reaction of haloid acid liquor and soluble carbonate - Google Patents
Hydrate production method assisted by reaction of haloid acid liquor and soluble carbonate Download PDFInfo
- Publication number
- CN106351615A CN106351615A CN201610931601.3A CN201610931601A CN106351615A CN 106351615 A CN106351615 A CN 106351615A CN 201610931601 A CN201610931601 A CN 201610931601A CN 106351615 A CN106351615 A CN 106351615A
- Authority
- CN
- China
- Prior art keywords
- hydrate
- stratum
- well
- acid liquor
- injection
- 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.)
- Granted
Links
- 239000002253 acid Substances 0.000 title claims abstract description 23
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 28
- 239000000243 solution Substances 0.000 claims abstract description 28
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 14
- 238000002347 injection Methods 0.000 claims abstract description 13
- 239000007924 injection Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 230000007935 neutral effect Effects 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 21
- 229910052736 halogen Inorganic materials 0.000 claims description 18
- 150000002367 halogens Chemical class 0.000 claims description 18
- 230000015572 biosynthetic process Effects 0.000 claims description 9
- 238000011084 recovery Methods 0.000 claims description 7
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 230000020477 pH reduction Effects 0.000 claims description 3
- 150000004677 hydrates Chemical class 0.000 abstract description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 8
- 230000035699 permeability Effects 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000001737 promoting effect Effects 0.000 abstract 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- VTVVPPOHYJJIJR-UHFFFAOYSA-N carbon dioxide;hydrate Chemical compound O.O=C=O VTVVPPOHYJJIJR-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011549 displacement method Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000126 substance Substances 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0099—Equipment or details not covered by groups E21B15/00 - E21B40/00 specially adapted for drilling for or production of natural hydrate or clathrate gas reservoirs; Drilling through or monitoring of formations containing gas hydrates or clathrates
-
- 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
-
- 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
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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention provides a hydrate production method assisted by reaction of a haloid acid liquor and a soluble carbonate. The hydrate production method comprises the following steps: a, carrying out draining and depressurizing production on a hydrate stratum first; b, if the gas output of the hydrate stratum is decreased obviously and cannot meet the industrial gas output requirement when the draining and depressurizing method is used, injecting a haloid acid liquor from an injection well or a fracturing well until a liquid in a draining well shows as being acidified; c, injecting a soluble carbonate solution from the injection well or the fracturing well until the liquid in the drawing well is neutral; and d, repeating steps a, b and c. The haloid acid liquor is capable of dissolving acid soluble obstructions in the stratum to increase the permeability of the stratum, thereby being conducive to discharge of free methane gas from decomposed hydrates from the production well; furthermore, the soluble carbonate solution is injected into the stratum to react exothermically and chemically with the haloid acid liquor in the stratum, and the heat generated by the reaction is capable of promoting the decomposition of the hydrates in the stratum.
Description
Technical field
The present invention discloses a kind of method of exploitation of gas hydrates, and the method is widely used in all kinds of hydrations containing natural gas
The exploitation of gas hydrates operation on thing stratum.
Background technology
Gas hydrates are widely paid close attention to as following clean energy resource due to its larger reserves.Using
It is the key technology realizing natural gas hydrate exploitation for free methane gas that rational technological means make decomposition of hydrate in stratum.
Due to gas hydrates under appropriate conditions of temperature and pressure can stable existence, therefore, how to break containing gas water
The in-situ temperature on compound stratum and pressure state are the technical problem underlying realizing original position gas hydrate dissociation.At present, open
The method adopting gas hydrates mainly has stratum voltage drop method exploitation, the exploitation of injecting carbon dioxide displacement method and heat shock method exploitation.
Using in voltage drop method recovery process, existing with decomposition of hydrate in landing surface, formation temperature containing hydrate constantly declines, due to
There is " self-shield effect " in hydrate itself, and stratum lower temperature causes hydrate to reach new stable equilibrium, leads to ground
Layer decomposition of hydrate speed constantly reduces and may be finally stopped the problem of decomposition；And adopt in carbon dioxide replacement method, by
There are parcel gas hydrates in the carbon dioxide hydrate that displacement is formed, can cause the wrapped gas hydrates cannot
Decompose further, ultimately result in the problem that gas hydrates cannot decompose；When using heat shock method, due to the vapourss of filling
Or other hot fluids can only efficiently transfer heat to the hydrate formation around nearly well, and the ground farther out from heated well to be made
In layer during decomposition of hydrate, substantial amounts of heat energy need to be consumed, have such problems as that exploitation of gas hydrates is less economical.
Content of the invention
For deficiencies of the prior art, the invention provides a kind of halogen family acid solution is auxiliary with solvable carbonate reaction
Help hydrate recovery method, the method is greatly improved the production efficiency of gas hydrates.
In order to solve above-mentioned technical problem, present invention employs following technical scheme:
Halogen family acid solution assists hydrate recovery method with solvable carbonate reaction, and the method comprises the steps:
A, first drainage and step-down method exploitation is carried out to hydrate formation, under conditions of disclosure satisfy that industrial aerogenesis, make
The hydrate that application drainage and step-down method exploitation can be decomposed is tried one's best and is decomposed；
B, when hydrate formation gas production occurring using drainage and step-down method and is obviously reduced to meet industrial gas production and requiring
When, inject halogen family acid solution in injection well or fractured well, until liquid occurs stopping injection halogen family during acidification phenomenon in gully
Acid solution；
C, in injection well or fractured well, inject solvable carbonate solution, until stopping note in gully during liquid shows neutral
Enter；
D, repetition tri- steps of a, b and c, realize stable decomposition and the high yield of natural gas hydrate stratum.
The solution have the advantages that: the present invention provides halogen family acid solution to assist hydrate exploitation side with solvable carbonate reaction
In method, the halogen family acid solution being initially injected stratum can make acid-soluble obturator dissolving in stratum, increases the permeability on stratum,
After being conducive to decomposition of hydrate, free methane gas is discharged from recovery well；The present invention is being initially injected halogen family acid solution toward in stratum
Afterwards, and inject solvable carbonate solution into stratum, solvable carbonate solution occurs exothermic chemical with ground in the layer halogen family acid solution
Reaction, the heat that reaction produces can promote the decomposition of hydrate in stratum；Meanwhile, solvable carbonate solution and ground in the layer halogen
Race's acid solution react generation carbon dioxide can with stratum gas hydrates occur displacement reaction, occur displacement reaction
The heat producing promotes the decomposition of hydrate further, and solvable carbonate solution and ground in the layer halogen family acid solution react generation
Halogen can improve the salinity generating water after decomposition of hydrate, reduce the freezing point of stratum water, weaken formation gas hydration
Thing, from " protective effect ", promotes the decomposition of stratum hydrate.
Specific embodiment
Halogen family acid solution assists hydrate recovery method with solvable carbonate reaction, when creeping into Approaching Coal Seam, suspends drilling
Operation is simultaneously passed through cryogen to bottom hole, boring objects ahead coal seam is refrigerated to depth selection, and enters by under the drilling rod of ground
The wire line coring operation that core plugging notifying mechanism of rope core drilling is normally crept into freezing coal seam.
The method specifically includes following steps:
A, first drainage and step-down method exploitation is carried out to hydrate formation, under conditions of disclosure satisfy that industrial aerogenesis, make
The hydrate that application drainage and step-down method exploitation can be decomposed is tried one's best and is decomposed；
B, when hydrate formation gas production occurring using drainage and step-down method and is obviously reduced to meet industrial gas production and requiring
When, inject halogen family acid solution in injection well or fractured well, until liquid occurs stopping injection halogen family during acidification phenomenon in gully
Acid solution；
C, in injection well or fractured well, inject solvable carbonate solution, until stopping note in gully during liquid shows neutral
Enter；
D, repetition tri- steps of a, b and c, realize stable decomposition and the high yield of natural gas hydrate stratum.
Finally illustrate, above example only in order to technical scheme to be described and unrestricted, although with reference to relatively
Good embodiment has been described in detail to the present invention, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent, the objective without deviating from technical solution of the present invention and scope, and it all should be covered at this
In the middle of the right of invention.
Claims (1)
1. halogen family acid solution and solvable carbonate reaction auxiliary hydrate recovery method are it is characterised in that the method includes walking as follows
Rapid:
A, first drainage and step-down method exploitation is carried out to hydrate formation, under conditions of disclosure satisfy that industrial aerogenesis, make in application
The hydrate that the exploitation of drainage and step-down method can be decomposed is tried one's best and is decomposed；
B, when using drainage and step-down method occur hydrate formation gas production be obviously reduced can not meet industrial gas production and require when, from
Injection halogen family acid solution in injection well or fractured well, until liquid occurs stopping injection halogen family acid solution during acidification phenomenon in gully；
C, in injection well or fractured well, inject solvable carbonate solution, until stopping injection in gully during liquid shows neutral；
D, repetition tri- steps of a, b and c, realize stable decomposition and the high yield of natural gas hydrate stratum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610931601.3A CN106351615B (en) | 2016-10-31 | 2016-10-31 | Halogen family acid solution and solvable carbonate reaction assist hydrate recovery method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610931601.3A CN106351615B (en) | 2016-10-31 | 2016-10-31 | Halogen family acid solution and solvable carbonate reaction assist hydrate recovery method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106351615A true CN106351615A (en) | 2017-01-25 |
| CN106351615B CN106351615B (en) | 2019-07-19 |
Family
ID=57864822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610931601.3A Expired - Fee Related CN106351615B (en) | 2016-10-31 | 2016-10-31 | Halogen family acid solution and solvable carbonate reaction assist hydrate recovery method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106351615B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575197A (en) * | 2017-10-23 | 2018-01-12 | 大庆东油睿佳石油科技有限公司 | A kind of method of row's formula horizontal well chemical flooding exploitation of gas hydrate |
| CN108194063A (en) * | 2018-03-07 | 2018-06-22 | 吉林大学 | Utilize the device and method of spontaneous heating material heating secondary buck exploitation hydrate |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1786416A (en) * | 2005-12-22 | 2006-06-14 | 中国石油大学(华东) | Method for extracting hydrate on bottom of sea by deep earth heart water circulation |
| US20120038174A1 (en) * | 2010-08-13 | 2012-02-16 | Board Of Regents, The University Of Texas System | Storing Carbon Dioxide and Producing Methane and Geothermal Energy from Deep Saline Aquifers |
| CN102454394A (en) * | 2010-10-15 | 2012-05-16 | 中国海洋石油总公司 | Method for displacing methane from natural gas hydrate |
| US20120222870A1 (en) * | 2011-03-03 | 2012-09-06 | Schaef Herbert T | Downhole Fluid Injection Systems, CO2 Sequestration Methods, and Hydrocarbon Material Recovery Methods |
| CN103603638A (en) * | 2013-11-13 | 2014-02-26 | 大连理工大学 | Natural gas hydrate CO2 substitution extraction method combined with depressurization |
| CN105134152A (en) * | 2015-08-24 | 2015-12-09 | 中国石油大学(北京) | Method and system for extracting natural gas hydrate through thermal jet flow |
| CN105332681A (en) * | 2015-10-28 | 2016-02-17 | 吉林大学 | Thermal stimulation and chemical stimulation combined process of hot-dry-rock thermal reservoir |
| CN105625998A (en) * | 2016-02-02 | 2016-06-01 | 西南石油大学 | Reverse production method and production equipment for seafloor natural gas hydrate stable layer |
| CN105715236A (en) * | 2014-08-12 | 2016-06-29 | 成都能生材科技开发有限责任公司 | Environment friendliness and low-pressure super-cold liquefaction combined mining technology for combustible ice well network |
| CN105822267A (en) * | 2016-03-31 | 2016-08-03 | 杨溢 | Method and device for exploiting deep-sea natural gas hydrate |
-
2016
- 2016-10-31 CN CN201610931601.3A patent/CN106351615B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1786416A (en) * | 2005-12-22 | 2006-06-14 | 中国石油大学(华东) | Method for extracting hydrate on bottom of sea by deep earth heart water circulation |
| US20120038174A1 (en) * | 2010-08-13 | 2012-02-16 | Board Of Regents, The University Of Texas System | Storing Carbon Dioxide and Producing Methane and Geothermal Energy from Deep Saline Aquifers |
| CN102454394A (en) * | 2010-10-15 | 2012-05-16 | 中国海洋石油总公司 | Method for displacing methane from natural gas hydrate |
| US20120222870A1 (en) * | 2011-03-03 | 2012-09-06 | Schaef Herbert T | Downhole Fluid Injection Systems, CO2 Sequestration Methods, and Hydrocarbon Material Recovery Methods |
| CN103603638A (en) * | 2013-11-13 | 2014-02-26 | 大连理工大学 | Natural gas hydrate CO2 substitution extraction method combined with depressurization |
| CN105715236A (en) * | 2014-08-12 | 2016-06-29 | 成都能生材科技开发有限责任公司 | Environment friendliness and low-pressure super-cold liquefaction combined mining technology for combustible ice well network |
| CN105134152A (en) * | 2015-08-24 | 2015-12-09 | 中国石油大学(北京) | Method and system for extracting natural gas hydrate through thermal jet flow |
| CN105332681A (en) * | 2015-10-28 | 2016-02-17 | 吉林大学 | Thermal stimulation and chemical stimulation combined process of hot-dry-rock thermal reservoir |
| CN105625998A (en) * | 2016-02-02 | 2016-06-01 | 西南石油大学 | Reverse production method and production equipment for seafloor natural gas hydrate stable layer |
| CN105822267A (en) * | 2016-03-31 | 2016-08-03 | 杨溢 | Method and device for exploiting deep-sea natural gas hydrate |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575197A (en) * | 2017-10-23 | 2018-01-12 | 大庆东油睿佳石油科技有限公司 | A kind of method of row's formula horizontal well chemical flooding exploitation of gas hydrate |
| CN108194063A (en) * | 2018-03-07 | 2018-06-22 | 吉林大学 | Utilize the device and method of spontaneous heating material heating secondary buck exploitation hydrate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106351615B (en) | 2019-07-19 |
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Granted publication date: 20190719 Termination date: 20201031 |