CN106968652A - A kind of auxiliary carbon dioxide is handled up new method - Google Patents
A kind of auxiliary carbon dioxide is handled up new method Download PDFInfo
- Publication number
- CN106968652A CN106968652A CN201710185845.6A CN201710185845A CN106968652A CN 106968652 A CN106968652 A CN 106968652A CN 201710185845 A CN201710185845 A CN 201710185845A CN 106968652 A CN106968652 A CN 106968652A
- Authority
- CN
- China
- Prior art keywords
- fluid
- carbon dioxide
- oil
- handled
- new method
- 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.)
- Pending
Links
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 13
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000012530 fluid Substances 0.000 claims abstract description 18
- 235000019270 ammonium chloride Nutrition 0.000 claims abstract description 11
- 238000010276 construction Methods 0.000 claims abstract description 11
- 238000002347 injection Methods 0.000 claims abstract description 8
- 239000007924 injection Substances 0.000 claims abstract description 8
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000004615 ingredient Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 230000004087 circulation Effects 0.000 claims abstract description 4
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 8
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 8
- 239000000284 extract Substances 0.000 claims description 4
- 239000001103 potassium chloride Substances 0.000 claims description 4
- 235000011164 potassium chloride Nutrition 0.000 claims description 4
- 239000001509 sodium citrate Substances 0.000 claims description 4
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical group O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 4
- 230000000638 stimulation Effects 0.000 abstract description 5
- 230000001965 increasing effect Effects 0.000 abstract description 4
- 231100000252 nontoxic Toxicity 0.000 abstract description 4
- 230000003000 nontoxic effect Effects 0.000 abstract description 4
- 238000000605 extraction Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 13
- 239000010779 crude oil Substances 0.000 description 12
- 239000003129 oil well Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- -1 iron ions Chemical class 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004094 surface-active agent 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
- 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
- E21B43/20—Displacing by water
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/594—Compositions used in combination with injected gas, e.g. CO2 orcarbonated gas
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The present invention provides a kind of auxiliary carbon dioxide and handled up new method, and this method comprises the following steps：Fluid is continuously injected into from oil sets annular space, pit shaft is then extracted out by oil pumper, wherein injection rate is carried out 23 construction circulations and clean up shaft bottom heavy ingredient, reached construction requirement by 9 cubic metres of fluid calculations of every 1000 meters injections；The formula of fluid is matched according to following component, and the proportioning of each component is by mass percentage：5 10% sal-ammoniacs, 0.5% ferrous stability and surplus are stratum water of the temperature at 80 degree 100 degree.The fluid that the present invention is used have it is nontoxic, do not injure stratum, it is good with carbon dioxide compatibility, and construction safety is reliable, can inject from oil sets annular space, then by fluid extraction pit shaft, it is not necessary to job execution.Reach the obvious purpose of CO_2 stimulation oil increasing effect.
Description
Technical field
This method be related to raising oil recovery factor in terms of, mainly auxiliary improve CO_2 stimulation construction success rate and
Effective percentage, specifically related to a kind of auxiliary carbon dioxide is handled up new method.
Background technology
As oil well is constantly exploited, some crude oil heavy components can be constantly deposited around nearly well, this is that all oil wells exist
The actual conditions that cannot be avoided in production process, are primarily due to as strata pressure is constantly reduced, the gradually degassing of crude oil,
The viscosity increase of oil, and this process is not inverse, and the hole so around the nearly well in part is oozed and can be deteriorated year by year, and this is also to cause
The major reason of oil well output reduction, if not in advance by this issue handling, and low temperature liquid carbon dioxide is directly injected into, this
Part heavy ingredient can be squeezed into deeper well section, can cause more serious blockage problem, so how solve this problem non-
It is often important, also it is to ensure that the efficient important step of CO_2 stimulation.
The content of the invention：
In order to solve technical problem present in background technology, the present invention proposes that a kind of auxiliary carbon dioxide is handled up new side
Method, the fluid that uses of the present invention have it is nontoxic, do not injure stratum, it is good with carbon dioxide compatibility, and construction safety can
Lean on, can be injected from oil sets annular space, then extract the fluid out pit shaft, it is not necessary to job execution.Reach that carbon dioxide is gulped down
Tell the obvious purpose of oil increasing effect.
The technical scheme is that：A kind of auxiliary carbon dioxide is handled up new method, and this method comprises the following steps：From oil
Collar-shaped space is continuously injected into fluid, then extracts pit shaft out by oil pumper, wherein injection rate is by 9 cubic metres of streams of every 1000 meters injections
Body is calculated, and is carried out 2-3 construction circulation and is cleaned up shaft bottom heavy ingredient, reaches construction requirement；The formula of fluid is under
Row component proportion, the proportioning of each component is by mass percentage：5-10% sal-ammoniacs, 0.5% ferrous stability and surplus are
Stratum water of the temperature in 80 degree of -100 degree.
Sal-ammoniac in such scheme is replaced by potassium chloride or other villaumites；Ferrous stability is sodium citrate.
Fluid mainly includes potassium chloride or sal-ammoniac or other villaumites, and sal-ammoniac can be with the colloid in crude oil heavy component
React dissolving colloid, reaches the purpose of cleaning crude oil heavy component, and the aobvious alkalescence of ionization, crude oil occur for the aqueous solution of sal-ammoniac
Aobvious acidity, the aqueous solution and the crude oil of sal-ammoniac can react generation surfactant and come clear to reduce the surface tension of crude oil
Wash crude oil, reach the purpose of cleaning crude oil heavy component, in addition potassium chloride or sal-ammoniac, other villaumites can be played prevents clay swollen
Swollen effect；Ferrous stability sodium citrate can react with the asphalitine in crude oil heavy component and dirty matter, reach
The purpose of crude oil heavy component is cleaned, can also prevent from forming precipitation of iron ions in addition, plugging hole is waited, and then reduces the infiltration on stratum
Property.Wax in the enough dissolving crude oil heavy components of stratum hot water.The fluid have it is nontoxic, do not injure the characteristics such as stratum.
The present invention has the advantages that：The fluid that the present invention is used have it is nontoxic, do not injure stratum and dioxy
Change carbon compatibility good, and construction safety is reliable, can be injected from oil sets annular space, then extracts the fluid out pit shaft, no
Need job execution.Reach the obvious purpose of CO_2 stimulation oil increasing effect.
Embodiment：
With reference to example, the invention will be further described：
Ba1-5 wells are continuously injected into injection 50m from oil sets annular space3Fluid is cleaned, pit shaft is then extracted out by oil pumper, applied
Heavy ingredient effect around 2 circulations of work, the fluid of injection and nearly well, shaft bottom heavy ingredient is cleaned up, construction is reached
Preceding preparation requirement, injects liquid carbon dioxide according to scheme, well head averagely injects pressure and is maintained at 7.5MPa or so, boils in a covered pot over a slow fire well 12
Opening well and making production after it, averagely increase day by day 1.8 tons of oil, adds up to increase 234 tons of oil, CO_2 stimulation oil increasing effect is obvious.
The formula of fluid used is matched according to following component, and the proportioning of each component is by mass percentage：8% sal-ammoniac,
0.5% ferrous stability sodium citrate and temperature are in 80 degree of -100 stratum water 91.5% spent.
Claims (2)
- A kind of new method 1. auxiliary carbon dioxide is handled up, this method comprises the following steps：Stream is continuously injected into from oil sets annular space Body, then extracts pit shaft out by oil pumper, and wherein injection rate carries out 2-3 construction by 9 cubic metres of fluid calculations of every 1000 meters injections Circulation cleans up shaft bottom heavy ingredient, reaches construction requirement；The formula of fluid matched according to following component, and each component is matched somebody with somebody Than by mass percentage：5-10% sal-ammoniacs, 0.5% ferrous stability and surplus are temperature on the stratum of 80 degree of -100 degree Water.
- The new method 2. auxiliary carbon dioxide according to claim 1 is handled up, it is characterised in that：Sal-ammoniac by potassium chloride or its Its villaumite is replaced；Ferrous stability is sodium citrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710185845.6A CN106968652A (en) | 2017-03-27 | 2017-03-27 | A kind of auxiliary carbon dioxide is handled up new method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710185845.6A CN106968652A (en) | 2017-03-27 | 2017-03-27 | A kind of auxiliary carbon dioxide is handled up new method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106968652A true CN106968652A (en) | 2017-07-21 |
Family
ID=59330181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710185845.6A Pending CN106968652A (en) | 2017-03-27 | 2017-03-27 | A kind of auxiliary carbon dioxide is handled up new method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106968652A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109138944A (en) * | 2018-09-11 | 2019-01-04 | 大庆金军石油科技开发有限公司 | A kind of carbon dioxide compound throughput new method |
| CN111022006A (en) * | 2019-12-06 | 2020-04-17 | 大庆金军石油科技开发有限公司 | Method for improving shale oil well recovery ratio through carbon dioxide composite huff and puff |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863553A (en) * | 2015-04-23 | 2015-08-26 | 赵金树 | Novel gas well water block releasing method |
| CN106221688A (en) * | 2016-07-29 | 2016-12-14 | 中国石油化工股份有限公司华东油气分公司泰州采油厂 | A kind of preparation method and applications technique of detergent |
-
2017
- 2017-03-27 CN CN201710185845.6A patent/CN106968652A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863553A (en) * | 2015-04-23 | 2015-08-26 | 赵金树 | Novel gas well water block releasing method |
| CN106221688A (en) * | 2016-07-29 | 2016-12-14 | 中国石油化工股份有限公司华东油气分公司泰州采油厂 | A kind of preparation method and applications technique of detergent |
Non-Patent Citations (2)
| Title |
|---|
| 吕开河: "《修井作业中保护油气层技术》", 30 September 2010, 中国石油大学出版社 * |
| 鞠斌山: "CO_2吞吐效果的影响因素分析", 《石油大学学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109138944A (en) * | 2018-09-11 | 2019-01-04 | 大庆金军石油科技开发有限公司 | A kind of carbon dioxide compound throughput new method |
| CN111022006A (en) * | 2019-12-06 | 2020-04-17 | 大庆金军石油科技开发有限公司 | Method for improving shale oil well recovery ratio through carbon dioxide composite huff and puff |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105332681B (en) | The thermostimulation of hot dry rock heat reservori and chemical stimulation process integration | |
| CN105255466A (en) | Slow blockage removing agent for oil well and blockage removing method | |
| CN109083621A (en) | Composite blockage removing method for coiled tubing of horizontal well | |
| CA2569676A1 (en) | Oilfield enhanced in situ combustion process | |
| CN106014330A (en) | Method for improving chemical plugging success rate of leakage casing damage well | |
| CN106968652A (en) | A kind of auxiliary carbon dioxide is handled up new method | |
| RU2014150019A (en) | WAYS TO MINIMIZE EXTRAORDINARY EXTRUSION OF THE PROPELLING FILLER AT HYDRAULIC GROUND RIP | |
| CN108049855A (en) | A kind of MH acid construction technology suitable for sandstone reservoir transformation | |
| CN104632124A (en) | Deep well sandstone reservoir plugging method with serious pollution | |
| CN101691838B (en) | Ultralow permeability oil filed water injection well multicomponent chemical microemulsion pressure reduction and injection gain method | |
| CN107905767A (en) | Water injection well cleaning and scale prevention online acidification method | |
| CN106121613B (en) | Temporary stall is to fracturing technology method in a kind of coal bed gas well pit shaft | |
| CN104481475A (en) | Oil well carbon dioxide carbonated water throughput production increasing method | |
| CN107246257B (en) | Heterogeneous reservoir is acidified remodeling method | |
| CN104629712A (en) | Deep acidizing acid liquid and method for realizing deep acidizing of low-permeability sandstone reservoir | |
| CN108865107A (en) | A kind of low frictional resistance deep acidizing acid liquid for acid fracturing of oil/gas well | |
| CN110410048A (en) | Method for prolonging acidification validity period | |
| CN112796728A (en) | Acid fracturing method for improving water yield of limestone reservoir geothermal well | |
| CN109138944A (en) | A kind of carbon dioxide compound throughput new method | |
| CN205025424U (en) | Continuous water plugging process pipe column for horizontal well | |
| CN102278092B (en) | Biological enzyme blocking removal process for blocking of inorganic scaling contained in strata | |
| CN103912247A (en) | Gas well horizontal well multistage slug process | |
| CN113250653A (en) | Acidification method of water injection well | |
| CN108611085B (en) | Acid liquor for acid fracturing of low physical property section of SAGD well | |
| WO2021137869A1 (en) | Removing filter cake with delayed enzymatic breakers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170721 |
|
| RJ01 | Rejection of invention patent application after publication |