CN109135706A - A kind of sulphur dispersion stabilizer preventing analysis sulphur well head sulfur plug - Google Patents
A kind of sulphur dispersion stabilizer preventing analysis sulphur well head sulfur plug Download PDFInfo
- Publication number
- CN109135706A CN109135706A CN201811005580.8A CN201811005580A CN109135706A CN 109135706 A CN109135706 A CN 109135706A CN 201811005580 A CN201811005580 A CN 201811005580A CN 109135706 A CN109135706 A CN 109135706A
- Authority
- CN
- China
- Prior art keywords
- sulphur
- dispersion stabilizer
- sulfur
- well head
- preventing analysis
- 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
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- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 95
- 239000005864 Sulphur Substances 0.000 title claims abstract description 74
- 239000003381 stabilizer Substances 0.000 title claims abstract description 21
- 239000006185 dispersion Substances 0.000 title claims abstract description 20
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 19
- 239000011593 sulfur Substances 0.000 title claims abstract description 19
- 238000004458 analytical method Methods 0.000 title claims abstract description 12
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 21
- 229920000642 polymer Polymers 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000002904 solvent Substances 0.000 claims abstract description 3
- 229910052799 carbon Inorganic materials 0.000 claims abstract 3
- 235000019441 ethanol Nutrition 0.000 claims description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 18
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 10
- 150000001298 alcohols Chemical class 0.000 claims description 8
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 4
- 230000007062 hydrolysis Effects 0.000 claims description 3
- 238000006460 hydrolysis reaction Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 150000001412 amines Chemical class 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 abstract description 5
- 230000008021 deposition Effects 0.000 abstract description 5
- 239000003795 chemical substances by application Substances 0.000 abstract description 4
- 239000002270 dispersing agent Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 239000003814 drug Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000008187 granular material Substances 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 231100000252 nontoxic Toxicity 0.000 abstract description 2
- 230000003000 nontoxic effect Effects 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract description 2
- 230000009967 tasteless effect Effects 0.000 abstract description 2
- 231100000331 toxic Toxicity 0.000 abstract description 2
- 230000002588 toxic effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 9
- 235000001508 sulfur Nutrition 0.000 description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 238000009736 wetting Methods 0.000 description 6
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 4
- 229920002521 macromolecule Polymers 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- WQOXQRCZOLPYPM-UHFFFAOYSA-N dimethyl disulfide Chemical compound CSSC WQOXQRCZOLPYPM-UHFFFAOYSA-N 0.000 description 2
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- -1 diaryl disulfide Chemical compound 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920002627 poly(phosphazenes) Polymers 0.000 description 1
- XTUSEBKMEQERQV-UHFFFAOYSA-N propan-2-ol;hydrate Chemical compound O.CC(C)O XTUSEBKMEQERQV-UHFFFAOYSA-N 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Classifications
-
- 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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/528—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
- C09K8/532—Sulfur
-
- 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
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/06—Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting, e.g. eliminating, the deposition of paraffins or like substances
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- General Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Geochemistry & Mineralogy (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Sealing Material Composition (AREA)
Abstract
It is component, water for solvent that a kind of sulphur dispersion stabilizer preventing analysis sulphur well head sulfur plug, which is using low-carbon alcohols and polyacrylamide high molecular polymer, the solution being configured to by a certain percentage.The method for removing blockage of existing Usual sulphur is to fill the cleaning ways such as molten sulphur agent, heating, molten sulphur agent is mostly expensive in the technology, it is toxic, harmful, and there is niff, and sulphur dispersing agent stabilizer of the present invention is environmentally protective medicament nontoxic, tasteless, without secondary pollution, sulphur dispersing agent stabilizer is added in sulfur-containing gas well plugging point, drusen surface tension can be effectively reduced, prevent sulphur from assembling and adhering to, it can solve sulfur granules adherency and deposition problems, to substantially reduce the cleaning frequency of pipeline and equipment.
Description
Technical field
The invention belongs to oil-gas gathering and transportation technical fields, and in particular to a kind of sulphur dispersion for preventing analysis sulphur well head sulfur plug
Stabilizer.
Background technique
It is shown according to Investigation on Data, in the natural gas resource in China, hydrogen sulfide containing natural gas occupies quite high ratio,
And hydrogen sulfide content is more than 1% account for about China's natural gas reserves 1/4 in gas reservoir.Therefore, it develops and uses and contains safe and efficiently
Sulphur gas reservoir has great significance to China's Natural Gas Demand within the following quite a long time is met, in sour gas well
In production process, there are also the elemental sulfurs of dissolution in reservoir, and when pressure and temperature reduces, sulphur deposits in equipment or tube wall,
Airflow channel is plugged, gas well is affected and normally produces.According to both domestic and external the study found that when sulfur-bearing saturation degree is more than 20%
When, sulphur is stifled to be occurred rapidly, and the deposition of sulphur and square being inversely proportional away from wellbore centre distance, with pressure drop at just
Than so that it is bigger to deposit rapider and amount closer to pit shaft for elemental sulfur.
The main plugging point in ground is respectively, and at I and II throttle valve, in pipeline and divides acid separator top, mist extractor, goes out
There is a large amount of simple substance sulphur in mouth pipeline.The mode for solving tamper most widely used at present is to add dimethyl disulfide
The organic solvents such as object, diaryl disulfide, price is higher, has fabulous molten sulphur.But these organic solvents are expensive,
Dosage is big, and has very strong irritation.
Summary of the invention
The present invention is in view of the deficiencies of the prior art, and it is an object of the present invention to provide a kind of sulphur point for preventing analysis sulphur well head sulfur plug
Dispersion stabilizer.
For achieving the above object, the technical solution adopted by the present invention are as follows:
A kind of sulphur dispersion stabilizer preventing analysis sulphur well head sulfur plug, is with alcohols and polyacrylamide polyphosphazene polymer
Conjunction object is component, water is solvent, the solution being configured to by a certain percentage.
In above scheme, the alcohols is one or both of ethyl alcohol, propyl alcohol, isopropanol.
In above scheme, the concentration of the alcohols is 200~2000mg/L.
In above scheme, the concentration of the polyacrylamide high molecular polymer is 500~2000mg/L.
In above scheme, polyacrylamide high molecular polymer molecular weight >=20,000,000, degree of hydrolysis: < 30%.
The preparation method of above-mentioned sulphur dispersion stabilizer: alcohols is added to the water stirs evenly first；Then it adds
Polyacrylamide high molecular polymer, stirs.
Application of the above-mentioned sulphur dispersion stabilizer in terms of sulfur-containing gas well exploitation field.
Beneficial effects of the present invention are as follows: the method for removing blockage of existing Usual sulphur is to fill the cleanings sides such as molten sulphur agent, heating
Formula, molten sulphur agent is mostly expensive in the technology, toxic, harmful, and has niff, and sulphur of the present invention point
Powder stabilizer is environmentally protective medicament nontoxic, tasteless, without secondary pollution, and sulphur minute is added in sulfur-containing gas well plugging point
Drusen surface tension can be effectively reduced in powder stabilizer, prevent sulphur assemble and adherency, can solve sulfur granules adherency and
Deposition problems, to substantially reduce the cleaning frequency of pipeline and equipment.
Specific embodiment
For a better understanding of the present invention, below with reference to the embodiment content that the present invention is furture elucidated, but it is of the invention
Content is not limited solely to the following examples.
In following embodiment, the polyacrylamide high molecular polymer molecular weight is 20,000,000 Da, degree of hydrolysis: <
30%.
1 laboratory test of embodiment
Distinguishing compound concentration first is 200,500, the ethyl alcohol of 1000mg/L, isopropanol water solution, and the sulphur of 10wt% is added
Sulphur, observation sulphur wetting speed in water and degree, result are as follows:
1 ethyl alcohol of table, isopropanol are to the wetting effect of sulphur
Ethyl alcohol and isopropanol are compared to the wetting effect of sulphur, increases as alcohol dosage increases sulphur wetting amount, works as dosage
Sulphur can be wetted with 100% when greater than 500mg/L, and alcohol dosage increases wetting time and shortens, when soaking when greater than 500mg/L
Between be 35~40 seconds.Ethyl alcohol is suitable with wetting effect of the isopropanol to sulphur, thus following experimental selection ethyl alcohol be wetting agent into
Row research.
Compound concentration is the ethanol water of 500mg/L, then polyacrylamide is added in ethanol water, compound concentration
The sulphur powder of 20wt% is added in the polyacrylamide macromolecule polymer solution of respectively 0.5,1,2,3,4,5g/L in the solution
End, sulphur dispersion stabilization after measurement 6 hours, test result is shown, with the liter of polyacrylamide high molecular polymer concentration
Height, sulphur dispersion stabilization step up, and when polyacrylamide macromolecule polymer solution concentration is 5g/L, sulphur disperses most
Stablize, it is contemplated that polyacrylamide high molecular polymer excessive concentration, causes solution viscosity excessive, mobility is poor, because
This, selects optium concentration for 2000mg/L in practical application.
When polyacrylamide high molecular polymer concentration is selected as 2g/L, it is separately added into 5wt%, 10wt%, 20wt%
Sulphur, the half small sulphur of the sulphur solution of 20wt% is precipitated, at the sulphur of 10wt% 6 hours upper layer be slightly precipitated, layering,
The sulphur of the 5wt% solution-stabilized time is more than 12 hours.It therefore, is 2g/L's for polyacrylamide high molecular polymer content
Solution can stablize point steady 10% an or less sulphur, and sulphur amount more few stable time is longer, if to improve sulphur stably dispersing amount
Polymer concentration need to be increased, experiments have shown that the polyacrylamide macromolecule polymer solution of 5g/L can stablize 20g/L sulphur, but
Be 5g/L polyacrylamide macromolecule polymer solution viscosity it is excessive, poor fluidity selects polyacrylamide for ease of operation
Amine high molecular polymer is the solution of 2g/L, can be with the sulphur below of stable dispersion 5%.
Embodiment 2
200,000 sides of puguang gas field P3011 gas well gas amount/day, hydrogen sulfide content 8% divide acid separator mist extractor in working condition
Being averaged 4 months or so down will be blocked.The polyacrylamide high molecular polymer of ethyl alcohol, 1g/L by addition containing 500mg/L
Sulphur dispersing agent reduce elemental sulfur surface tension, make water and sulphur shape it can be observed that under the action of sulphur dispersing agent
At homogeneous mixed system, adherency and the deposition characteristics of sulphur are reduced, in the way of centrifuge separation by drusen from water
Separate, thus reduce sulphur deposition blocking, by system be added sulphur dispersion stabilizer, make clear up tamper when
Between it is primary by once becoming within 3 months cleaning in every 4 months.
Obviously, above-described embodiment is only intended to clearly illustrate made example, and is not the limitation to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And the obvious variation or change therefore amplified
It moves within still in the protection scope of the invention.
Claims (8)
1. a kind of sulphur dispersion stabilizer for preventing analysis sulphur well head sulfur plug, which is characterized in that be with alcohols and polyacrylamide
Amine high molecular polymer is component, water is solvent, the solution being configured to by a certain percentage.
2. the sulphur dispersion stabilizer according to claim 1 for preventing analysis sulphur well head sulfur plug, which is characterized in that described
Alcohols is low-carbon alcohols.
3. the sulphur dispersion stabilizer according to claim 1 for preventing analysis sulphur well head sulfur plug, which is characterized in that described
Low-carbon alcohols are one or both of ethyl alcohol, propyl alcohol, isopropanol.
4. the sulphur dispersion stabilizer according to claim 1 for preventing analysis sulphur well head sulfur plug, which is characterized in that described
The concentration of alcohols is 200 ~ 2000mg/L.
5. the sulphur dispersion stabilizer according to claim 1 for preventing analysis sulphur well head sulfur plug, which is characterized in that described
The concentration of polyacrylamide high molecular polymer is 500 ~ 2000mg/L.
6. the sulphur dispersion stabilizer according to claim 1 for preventing analysis sulphur well head sulfur plug, which is characterized in that described
Polyacrylamide high molecular polymer molecular weight >=20,000,000, degree of hydrolysis: < 30%.
7. the preparation method of any sulphur dispersion stabilizer of claim 1 ~ 6: alcohols being added to the water stir first
It is even；Then polyacrylamide high molecular polymer is added, is stirred.
8. application of any sulphur dispersion stabilizer of claim 1 ~ 6 in terms of sulfur-containing gas well exploitation field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811005580.8A CN109135706A (en) | 2018-08-30 | 2018-08-30 | A kind of sulphur dispersion stabilizer preventing analysis sulphur well head sulfur plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811005580.8A CN109135706A (en) | 2018-08-30 | 2018-08-30 | A kind of sulphur dispersion stabilizer preventing analysis sulphur well head sulfur plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109135706A true CN109135706A (en) | 2019-01-04 |
Family
ID=64829627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811005580.8A Pending CN109135706A (en) | 2018-08-30 | 2018-08-30 | A kind of sulphur dispersion stabilizer preventing analysis sulphur well head sulfur plug |
Country Status (1)
| Country | Link |
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| CN (1) | CN109135706A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115612173A (en) * | 2022-11-09 | 2023-01-17 | 广东金发科技有限公司 | Sulfur dispersion liquid and preparation method and application thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1663669A (en) * | 2004-12-24 | 2005-09-07 | 南化集团研究院 | Sulfur modifier used in wet type oxidation-reduction process desulfurization liquid |
| CN101874969A (en) * | 2009-12-31 | 2010-11-03 | 中北大学 | Sulfur particle settling agent used for desulfurization solution in wet oxidization process |
| WO2012109648A1 (en) * | 2011-02-11 | 2012-08-16 | The Penn State Research Foundation | Carbon-metal oxide-sulfur cathodes for high-performance lithium-sulfur batteries |
| CN103421482A (en) * | 2012-05-16 | 2013-12-04 | 中国石油化工股份有限公司 | Method for increasing high temperature aging stability of polyacrylamide |
| CN104138708A (en) * | 2013-05-07 | 2014-11-12 | 中国石油化工股份有限公司 | Sulfur deposition agent composition and method for improving liquid phase catalytic oxidation desulphurization effect |
| CN105194911A (en) * | 2015-09-29 | 2015-12-30 | 中北大学 | Sulfur particle flocculating agent applicable to iron-based desulfurizing solution |
| CN105355894A (en) * | 2015-10-16 | 2016-02-24 | 广东烛光新能源科技有限公司 | Preparation method for nanometer sulfur particles |
| CN106139837A (en) * | 2016-08-31 | 2016-11-23 | 陕西延长石油（集团）有限责任公司 | A kind of drusen modifying agent for Complexing Iron doctor solution and using method thereof |
| CN108219882A (en) * | 2017-11-24 | 2018-06-29 | 中石化石油工程技术服务有限公司 | The analysis anti-sulphur of sulphur well head blocks up system |
-
2018
- 2018-08-30 CN CN201811005580.8A patent/CN109135706A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1663669A (en) * | 2004-12-24 | 2005-09-07 | 南化集团研究院 | Sulfur modifier used in wet type oxidation-reduction process desulfurization liquid |
| CN101874969A (en) * | 2009-12-31 | 2010-11-03 | 中北大学 | Sulfur particle settling agent used for desulfurization solution in wet oxidization process |
| WO2012109648A1 (en) * | 2011-02-11 | 2012-08-16 | The Penn State Research Foundation | Carbon-metal oxide-sulfur cathodes for high-performance lithium-sulfur batteries |
| CN103421482A (en) * | 2012-05-16 | 2013-12-04 | 中国石油化工股份有限公司 | Method for increasing high temperature aging stability of polyacrylamide |
| CN104138708A (en) * | 2013-05-07 | 2014-11-12 | 中国石油化工股份有限公司 | Sulfur deposition agent composition and method for improving liquid phase catalytic oxidation desulphurization effect |
| CN105194911A (en) * | 2015-09-29 | 2015-12-30 | 中北大学 | Sulfur particle flocculating agent applicable to iron-based desulfurizing solution |
| CN105355894A (en) * | 2015-10-16 | 2016-02-24 | 广东烛光新能源科技有限公司 | Preparation method for nanometer sulfur particles |
| CN106139837A (en) * | 2016-08-31 | 2016-11-23 | 陕西延长石油（集团）有限责任公司 | A kind of drusen modifying agent for Complexing Iron doctor solution and using method thereof |
| CN108219882A (en) * | 2017-11-24 | 2018-06-29 | 中石化石油工程技术服务有限公司 | The analysis anti-sulphur of sulphur well head blocks up system |
Non-Patent Citations (1)
| Title |
|---|
| 吴素芳等: "硫磺颗粒陈降级的实验研究", 《宁夏师范学院学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115612173A (en) * | 2022-11-09 | 2023-01-17 | 广东金发科技有限公司 | Sulfur dispersion liquid and preparation method and application thereof |
| CN115612173B (en) * | 2022-11-09 | 2023-12-01 | 广东金发科技有限公司 | Sulfur dispersion liquid and preparation method and application thereof |
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