CN102775977A - Treating agent for inhibiting generation of hydrothion in steam flooding injection well, displacing oil and reducing viscosity and application thereof - Google Patents
Treating agent for inhibiting generation of hydrothion in steam flooding injection well, displacing oil and reducing viscosity and application thereof Download PDFInfo
- Publication number
- CN102775977A CN102775977A CN2012102852083A CN201210285208A CN102775977A CN 102775977 A CN102775977 A CN 102775977A CN 2012102852083 A CN2012102852083 A CN 2012102852083A CN 201210285208 A CN201210285208 A CN 201210285208A CN 102775977 A CN102775977 A CN 102775977A
- Authority
- CN
- China
- Prior art keywords
- hydrogen sulfide
- oil
- treatment agent
- steam
- hydrothion
- 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
Images
Abstract
The invention provides a treating agent for inhibiting generation of hydrothion in a steam flooding injection well, displacing oil and reducing viscosity and application of the treating agent. The treating agent comprises sodium nitrate, sodium hydroxide and high-temperature-resistance sulphur-free fluorocarbon surfactant, wherein sodium nitrate serves as an oxidant to increase the valence of sulphur so as to avoid the generation of hydrothion; sodium hydroxide is used for stabilizing sulphur with increased valence so that the reaction for inhibiting generation of hydrothion is irreversible and the generation of hydrothion in an oil reservoir can be inhibited; and the high-temperature-resistance sulphur-free fluorocarbon surfactant is used for displacing oil and reducing viscosity. The invention also provides application of the treating agent for inhibiting generation of hydrothion in the oil reservoir in the steam flooding injection well. In steam flooding, the treating agent is injected into stratum together with steam, thereby inhibiting generation of hydrothion in the oil reservoir at the source, further reducing the damage of hydrothion and achieving the functions of displacing oil and reducing viscosity.
Description
Technical field
The invention relates to treatment agent and application that a kind of steam drive injection well suppresses hydrogen sulfide generation and displacement of reservoir oil viscosity reduction; Specifically be a kind ofly to be used for the steam drive injection well, to suppress the generation of hydrogen sulfide from the source and to have the chemical processing agent of displacement of reservoir oil viscosity reduction effect simultaneously, and utilize this treatment agent to suppress to generate in oil reservoir the method for hydrogen sulfide and displacement of reservoir oil viscosity reduction.
Background technology
Hydrogen sulfide is a kind of colourless gas, and proportion is 1.1895, is heavier than air, and during normal temperature, the solubleness of hydrogen sulfide in water is 3.864g/L, and the solubleness in oil is 3.3g/L, and solubleness is bigger under the high pressure.When the people sucks high density (1500mg/m
3More than) time, the poisoner can lose consciousness rapidly, the companion acutely twitches, moment breath stopped, heartbeat stops then, is called as " lightning class " death.In addition, hydrogen sulfide poisoning also can cause shed tears, symptom such as photophobia, conjunctival congestion, oedema, cough.In the field, oil field; The harm of hydrogen sulfide also shows corrosion of metal; Being mainly hydrogen embrittlement destroys; Hydrogen embrittlement destroys that very easily cause down-hole string disconnected takes off, manifold of ground and pressurized vessel bearing capacity descend, take place to reveal and explosion hazard, and well head set-up is destroyed, and causes serious blowout out of control or firing accident.In addition, hydrogen sulfide also can react with non-metallic material such as rubber in uphole equipment, well head set-up, the subsurface tool, graphite.Cause rubber to follow the string; The inefficacy of sealing member.Can cause the leakage of down-hole oil production tubing string, lose efficacy; To ground pipe laying, pressurized vessel corrosion, cause that metallic substance decrease ductility, bearing capacity reduce and the generation industrial accident.There are following several kinds of approach can touch hydrogen sulfide in the output liquid in the daily production of oil well: the daily light maintenance operation of oil well; Setting-out of workman's well head and sampling are when cleaning separator, three-in-one, surge tank, when pipeline or separator emptying; When replacing or maintenance measuring instrument, all has H
2The danger that S poisons.
According to introducing the major cause that produces hydrogen sulfide in the oil well in the prior art document " Liaohe Oil Field oil well hydrogen sulfide mechanism of production and prophylactico-therapeutic measures " (" petroleum prospecting and exploitation " 2008..6P349-354) be: organic sulfide such as mercaptan, thioether at high temperature reacts generation hydrogen sulfide in the crude oil; Contain sulfur mineral in the stratum and at high temperature react generation hydrogen sulfide; Sulphate reducing bacteria becomes hydrogen sulfide with sulfate reduction in the local water under reservoir condition.
Mainly take following measure to carry out hydrogen sulfide both at home and abroad in the field, oil field at present and subdue control: sulfide hydrogen sleeve pipe gas is taked emptying, regular well-flushing, is entered the station and carry out rear end desulfurization processing; Sulfide hydrogen output liquid is taked to set up the desulfurization station, is used anticorrosion tubing, pressurized vessel carries out undercoat.The effect that these measures obtain is unsatisfactory.
CN102153997A discloses the method that a kind of oil field is administered agent and administered hydrogen sulfide with hydrogen sulfide.The weight percent of said improvement agent consists of nitrate salt 10%-45%, nitrite 5%-50%, water-soluble mikrobe activation system 5%-10% and water 45%-80%.When administering oil reservoir hydrogen sulfide, in water filling, add hydrogen sulfide and administer agent, inject the stratum; When administering production system hydrogen sulfide, in the production fluid aerogenesis, add the improvement agent, mix with the production fluid aerogenesis.
CN101235281A discloses a kind of oil field that is used for and has eliminated viscous crude hydrogen sulfide, it is eliminated the method for preventing and treating of hydrogen sulfide in the viscous crude before the extraction well head.Wherein be by weight percentage 5～30% Quilonum Retards, 3～25% bicarbonate of ammonia, 3～20% sodium-chlor, 2～15% octyl phenol Soxylat A 25-7s to be joined in 30～60% the water earlier to prepare treatment agent; (this condition should be under the normal temperature normal atmosphere under 25 ℃, the condition of 101325Pa then; Be the emptying state, dangerous), said treatment agent is imported the oil well from oil sets annular space; Treatment agent and viscous crude hybrid reaction, the stink damp physical efficiency is reduced to 0～10PPM.
CN101612516A discloses the removal method of hydrogen sulfide in a kind of ferrous hydrogen sulfide remover and the gas; Said ferrous hydrogen sulfide remover is the solution of iron cpd; Total ferric ion concentration in this solution produces the concentration that crystallization is separated out, pH value=1.5～3.0 of solution greater than 0mol/L and when all being the divalent/trivalent iron ion.Said hydrogen sulfide removal method is through HPP above-mentioned hydrogen sulfide scavengers to be pumped into the jet inlet of jet-pump, and pending gas is inhaled into jet-pump and with the hydrogen sulfide scavengers thorough mixing and desulphurization reaction takes place.
CN102090420A discloses a kind of crude oil gathering system sulphate reducing bacteria and has generated the biological inhibition method of secondary hydrogen sulfide, wherein suppresses the biostats of individual well and is made up of 50mg/L Sodium Nitrite, 20mg/L Sodium Tetraborate; Suppressing the biostats of petroleum transferring station is made up of 40-60mg/L Sodium Nitrite, 25mg humic acids, 10-20mg/L Sodium Tetraborate, 20-30mg/L sodium hydroxide ionogen; Suppressing the biostats of joint station is made up of 40-60mg/L Sodium Nitrite, 25mg humic acids, 10-20mg/L Sodium Tetraborate, 20-30mg/L sodium hydroxide ionogen, 95mg/L LUTARALDEHYDE sterilant; This method be in the crude oil transmission process from the generation of source control hydrogen sulfide, have the hydrogen sulfide time of inhibition long, cost is low, the characteristics of non-secondary pollution, has improved crude oil gathering system operation place Working environment.
(China's safety in production science and technology the 5th rolled up for the 2nd phase, 2009.04P178-180) had introduced a kind of hydrogen sulfide shaft bottom absorption process: can use sweetening agent to adsorb to the sleeve pipe gas that can't light and handle " strick precaution of the on-the-spot hydrogen sulfide of Liaohe River heavy crude heat extraction and improvement suggestion ".Hydrogen sulfide and heavy metal ion such as iron, zinc, copper can form deposition after combining in the several seconds, therefore in reservoir, inject iron content, zinc, the isoionic chemical reagent of copper, and they can disappear gas with hydrogen sulfide absorption in oil reservoir.But the shortcoming of this method is that the metallic sulfide that forms may influence the storage and collection performance of reservoir etc.
Yet, the method for the improvement oil well hydrogen sulfide of above-mentioned prior art record, emphasis all is " controlling ", does not also promptly suppress hydrogen sulfide from the source of Oil extraction process at present and produce the method that hydrogen sulfide just can not be generated in oil reservoir.And mostly the oil-displacing agent that is used for steam flood at present be Sulfonates, strengthened the possibility that oil reservoir produces hydrogen sulfide.
Summary of the invention
One object of the present invention is to provide a kind of new steam drive injection well that is used for to suppress the treatment agent that oil reservoir generates hydrogen sulfide and has the effect of displacement of reservoir oil viscosity reduction simultaneously.
Another object of the present invention is to provide the application of said treatment agent, specifically is to utilize said treatment agent to be used for the steam drive injection well to suppress the method that oil reservoir generates hydrogen sulfide and plays the effect of displacement of reservoir oil viscosity reduction simultaneously.
At first, the invention provides the treatment agent that a kind of new steam drive injection well suppresses hydrogen sulfide generation and displacement of reservoir oil viscosity reduction, this treatment agent comprises:
SODIUMNITRATE;
Sodium hydroxide;
The fluorocarbon surfactant of the non-sulfur-bearing of high temperature resistance.
In the treatment agent of the present invention, said SODIUMNITRATE is as oxygenant, and the valency of sulphur is raise, and can not generate hydrogen sulfide; Said sodium hydroxide is the sulphur that is used for stablizing after valency raises; Making the reaction that suppresses hydrogen sulfide, irreversible (resultant of reaction is water-soluble products; Can be dissolved in the water and separate with crude oil easily, can not have a negative impact crude production), be implemented in the generation that suppresses hydrogen sulfide in the oil reservoir; The fluorocarbon surfactant of the non-sulfur-bearing of high temperature resistance plays the effect of displacement of reservoir oil viscosity reduction; The fluorocarbon surfactant of the non-sulfur-bearing of described high temperature resistance can be a fluorocarbon surfactant conventional in the affiliated field; As long as can play displacement of reservoir oil viscosity reducing effect; For example: can be fluorocarbon surfactant TF3721 (this product mainly is import, and Shanghai comes fruit chemical industry ltd to sell); In addition, sodium hydroxide also has washing oil effect and said surfactant acting in conjunction when subduing hydrogen sulfide, can improve oil recovery factor 3%.Thereby, utilize treatment agent of the present invention, can realize from the source, oil reservoir, suppressing the generation of hydrogen sulfide, and play the effect of displacement of reservoir oil viscosity reduction simultaneously.
In a specific embodiments of the present invention, described treatment agent is to be made into the mixed solution that forms by the fluorocarbon surfactant of SODIUMNITRATE, sodium hydroxide, the non-sulfur-bearing of high temperature resistance and water.Theoretically, the concentration of the fluorocarbon surfactant of SODIUMNITRATE, sodium hydroxide, the non-sulfur-bearing of high temperature resistance is all available in solubility range.According to preferred specific embodiments of the present invention, in the said treatment agent, SODIUMNITRATE mass concentration 0.1-2%, sodium hydroxide mass concentration 0.1-2%, the fluorocarbon surfactant mass concentration 0.2-4% of the non-sulfur-bearing of high temperature resistance.The concentration range of the fluorocarbon surfactant of SODIUMNITRATE, sodium hydroxide, the non-sulfur-bearing of high temperature resistance mainly is to test resulting hydrogen sulfide growing amount according to the thing mould; And consider the back and confirm from effect and economic dispatch many-sided factor; Can this concentration suitably be adjusted according to conditions such as different blocks, geologic condition, hole conditions in the actual production, also can be during practical implementation according to the processing liquid measure of injecting well and injection speed suitably adjustment in said scope.Said water is preferably softening water, can on-the-spot preparation treatment agent solution of the present invention.
On the other hand, the present invention also provides described treatment agent being used for the application that the steam drive injection well suppresses oil reservoir generation hydrogen sulfide and displacement of reservoir oil viscosity reduction.In the steam flood process, treatment agent of the present invention is injected the stratum with steam, can effectively suppress hydrogen sulfide and in oil reservoir, generate, the injury of hydrogen sulfide is dropped to minimum, have the effect of displacement of reservoir oil viscosity reduction simultaneously.
On the other hand, the present invention also provides a kind of steam drive injection well to suppress the method that oil reservoir generates hydrogen sulfide and displacement of reservoir oil viscosity reduction, and this method comprises:
With treatment agent of the present invention, in the steam flood process, inject the stratum with steam, suppress hydrogen sulfide and in oil reservoir, generate, play the effect of displacement of reservoir oil viscosity reduction simultaneously.
According to specific embodiments of the present invention, steam drive injection well of the present invention suppresses in the method for oil reservoir generation hydrogen sulfide, and the injection speed of said treatment agent is 70-100ml/ minute.This speed can should guarantee effective IR of treatment agent simultaneously according to the steam treatment speed and the suitably adjustment in said scope of equipment injectability of steam drive injection well.
Particularly, the injection mode of said treatment agent is that coordinating with steam rapid heat cycle injects continuously, or divides slug to inject.
Treatment agent of the present invention can adopt any known equipment to carry injection.Preferably, on the other hand, it is a kind of for realizing the custom-designed treatment solution handling equipment of aforesaid method that the present invention also provides, and this equipment comprises:
Be equipped with the treatment solution storage receptacle of said treatment solution;
The treatment solution line of pipes, this pipeline one end is communicated with said treatment solution storage receptacle, and the other end is used to be communicated with the steam injection pipeline of steam drive injection well;
Be arranged on the rampump on the said line of pipes;
And the line of pipes of rampump outlet is provided with ball-and-seat.
According to specific embodiments of the present invention, in the said treatment solution handling equipment, rampump is provided with two, and is to be set up in parallel on said line of pipes.
In the equipment of the present invention, said treatment solution storage receptacle can be provided with liquidometer.Also can be provided with necessary conventional components such as valve on the said treatment solution line of pipes.
Compared with prior art, the invention has the beneficial effects as follows:
(1) generation of inhibition hydrogen sulfide in the stratum can make in the steam flood process and can not generate hydrogen sulfide;
(2) this method is raw materials used all is commercially produced products, and raw material is cheap and easy to get;
(3) in recovery well, do not have hydrogen sulfide to produce, eliminate oil recovery worker sampling, the potential safety hazard when patrolling well, and make that to produce hydrogen sulfide well safety and environmental protection up to standard is eliminated the disadvantageous effect to equipment etc. of hydrogen sulfide in the processes such as crude oil transhipment collection is defeated;
(4) resultant of reaction is water-soluble products, can be dissolved in the water to separate with crude oil easily, can not have a negative impact to crude production;
(5) when subduing hydrogen sulfide, can improve oil displacement efficiency, finally improve oil recovery factor.
Description of drawings
Fig. 1 suppresses the structural representation that oil reservoir generates the treatment solution handling equipment of hydrogen sulfide for the steam drive injection well of the present invention's one specific embodiment.
Embodiment
Pass through the characteristics and the result of use of specific embodiment further explain method of the present invention below, but therefore the present invention does not receive any restriction.
Embodiment 1:
See also shown in Figure 1ly, the steam drive injection well of present embodiment suppresses the treatment solution handling equipment that oil reservoir generates hydrogen sulfide and comprises:
Be used for the treatment solution storage receptacle 1 of ccontaining treatment solution, wherein be provided with liquidometer 11;
Treatment solution line of pipes 2, this pipeline one end is communicated with said treatment solution storage receptacle 1, and the other end is used to be communicated with the steam injection pipeline 5 of steam drive injection well; On line of pipes, also be provided with necessary valve 21;
Be set up in parallel two rampumps 3 on said line of pipes;
And the line of pipes of rampump outlet is provided with ball-and-seat 4.
Brocade 45-024-K26 well steam injection speed approximately is 102 tons/day, i.e. 71 kg/minute.
SODIUMNITRATE, sodium hydroxide, fluorocarbon surfactant TF3721 (coming fruit chemical industry ltd available from Shanghai), softening water scene are mixed with treatment agent solution; Wherein, SODIUMNITRATE mass concentration 0.5%, sodium hydroxide mass concentration 0.5%, fluorocarbon surfactant TF3721 mass concentration 1%.
The treatment agent solution of on-the-spot preparation is pressed 70ml/ minute speed with HTHP drop pump, and coordinating with steam rapid heat cycle injects.Corresponding recovery well Jin45-024-K25Jing, contrast anterior cannula concentration of hydrogen sulfide 750mg/m
3, injection well pressure 7.0MPa, recovery well day 1.1 tons of produce oils, inject after 40 days, the sleeve pipe concentration of hydrogen sulfide is 100mg/m
3, injecting after 60 days, concentration of hydrogen sulfide is 0mg/m
3, injection well pressure is reduced to 6.5MPa, recovery well day 2.5 tons of produce oils, sleeve pipe does not have hydrogen sulfide and detects at present, increases 145 tons of oil, produces normal.
Claims (7)
1. a steam drive injection well suppresses that hydrogen sulfide generates and the treatment agent of displacement of reservoir oil viscosity reduction, and this treatment agent comprises:
SODIUMNITRATE;
Sodium hydroxide;
The fluorocarbon surfactant of the non-sulfur-bearing of high temperature resistance.
2. treatment agent according to claim 1, this treatment agent are to be made into the mixed solution that forms by the fluorocarbon surfactant of SODIUMNITRATE, sodium hydroxide, the non-sulfur-bearing of high temperature resistance and water.
3. treatment agent according to claim 2, wherein, said SODIUMNITRATE mass concentration 0.1-2%, sodium hydroxide mass concentration 0.1-2%, the fluorocarbon surfactant mass concentration 0.2-4% of the non-sulfur-bearing of high temperature resistance.
4. claim 1 or 2 or 3 described treatment agents are being used for the application that the steam drive injection well suppresses oil reservoir generation hydrogen sulfide.
5. a steam drive injection well suppresses the method that oil reservoir generates hydrogen sulfide and displacement of reservoir oil viscosity reduction, and this method comprises:
With claim 1 or 2 or 3 described treatment agents, in the steam flood process, inject the stratum with steam, suppress hydrogen sulfide and in oil reservoir, generate, play the effect of displacement of reservoir oil viscosity reduction simultaneously.
6. method according to claim 5, wherein, the injection speed of said treatment agent is 70-100ml/ minute.
7. method according to claim 5, wherein, the injection mode of said treatment agent is that coordinating with steam rapid heat cycle injects continuously, or divides slug to inject.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210285208.3A CN102775977B (en) | 2012-08-10 | 2012-08-10 | Treating agent for inhibiting generation of hydrothion in steam flooding injection well, displacing oil and reducing viscosity and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210285208.3A CN102775977B (en) | 2012-08-10 | 2012-08-10 | Treating agent for inhibiting generation of hydrothion in steam flooding injection well, displacing oil and reducing viscosity and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102775977A true CN102775977A (en) | 2012-11-14 |
| CN102775977B CN102775977B (en) | 2014-11-26 |
Family
ID=47121090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210285208.3A Active CN102775977B (en) | 2012-08-10 | 2012-08-10 | Treating agent for inhibiting generation of hydrothion in steam flooding injection well, displacing oil and reducing viscosity and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102775977B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968639A (en) * | 2017-03-13 | 2017-07-21 | 中国石油化工股份有限公司 | A kind of method of hydrogen sulfide in improvement oil well |
| CN108868721A (en) * | 2018-08-01 | 2018-11-23 | 中国石油天然气股份有限公司 | A method of associated gas after desulfurization is driven using steam carry out viscous crude handle up well viscosity reduction |
| CN111349367A (en) * | 2018-12-21 | 2020-06-30 | 天津中航百慕新材料技术有限公司 | Low-VOC high-weather-resistance self-cleaning fluorocarbon coating and preparation method thereof |
| CN114058420A (en) * | 2021-11-13 | 2022-02-18 | 山东省众力环保科技有限公司 | Hydrogen sulfide remover for oil and gas wells and preparation method thereof |
| CN114293036A (en) * | 2021-12-24 | 2022-04-08 | 南方锰业集团有限责任公司大新锰矿分公司 | Method for inhibiting generation of hydrogen sulfide in leaching process of high-sulfur manganese carbonate ore |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4471839A (en) * | 1983-04-25 | 1984-09-18 | Mobil Oil Corporation | Steam drive oil recovery method utilizing a downhole steam generator |
| CN1761625A (en) * | 2003-03-05 | 2006-04-19 | 尤斯菲尔特有限公司 | Methods and apparatus for reducing nitrate demands in the reduction of dissolved and/or atmospheric sulfides in wastewater |
| CN101235281A (en) * | 2008-01-25 | 2008-08-06 | 西南石油大学 | Method for preventing and treating hydrogen sulphide in thick oil |
| CN101612516A (en) * | 2009-05-07 | 2009-12-30 | 中国石油辽河油田钻采工艺研究院 | The removal method of hydrogen sulfide in ferrous hydrogen sulfide remover and the gas |
| WO2010025452A1 (en) * | 2008-08-29 | 2010-03-04 | Micro Pure Solutions, Llc | Method for treating hydrogen sulfide-containing fluids |
| CN102090420A (en) * | 2009-12-09 | 2011-06-15 | 中国石油天然气股份有限公司 | Method for biologically inhibiting production of secondary hydrogen sulfide from sulfate reducing bacteria in crude oil gathering and transporting system |
| CN102153997A (en) * | 2011-03-07 | 2011-08-17 | 天津亿利科能源科技发展股份有限公司 | Hydrogen sulfide treating agent for oil fields and method for treating hydrogen sulfide |
-
2012
- 2012-08-10 CN CN201210285208.3A patent/CN102775977B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4471839A (en) * | 1983-04-25 | 1984-09-18 | Mobil Oil Corporation | Steam drive oil recovery method utilizing a downhole steam generator |
| CN1761625A (en) * | 2003-03-05 | 2006-04-19 | 尤斯菲尔特有限公司 | Methods and apparatus for reducing nitrate demands in the reduction of dissolved and/or atmospheric sulfides in wastewater |
| CN101235281A (en) * | 2008-01-25 | 2008-08-06 | 西南石油大学 | Method for preventing and treating hydrogen sulphide in thick oil |
| WO2010025452A1 (en) * | 2008-08-29 | 2010-03-04 | Micro Pure Solutions, Llc | Method for treating hydrogen sulfide-containing fluids |
| CN101612516A (en) * | 2009-05-07 | 2009-12-30 | 中国石油辽河油田钻采工艺研究院 | The removal method of hydrogen sulfide in ferrous hydrogen sulfide remover and the gas |
| CN102090420A (en) * | 2009-12-09 | 2011-06-15 | 中国石油天然气股份有限公司 | Method for biologically inhibiting production of secondary hydrogen sulfide from sulfate reducing bacteria in crude oil gathering and transporting system |
| CN102153997A (en) * | 2011-03-07 | 2011-08-17 | 天津亿利科能源科技发展股份有限公司 | Hydrogen sulfide treating agent for oil fields and method for treating hydrogen sulfide |
Non-Patent Citations (1)
| Title |
|---|
| 张华平: "辽河稠油热采现场硫化氢的防范与治理建议", 《中国安全生产科学技术》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968639A (en) * | 2017-03-13 | 2017-07-21 | 中国石油化工股份有限公司 | A kind of method of hydrogen sulfide in improvement oil well |
| CN106968639B (en) * | 2017-03-13 | 2018-06-29 | 中国石油化工股份有限公司 | A kind of method of hydrogen sulfide in improvement oil well |
| CN108868721A (en) * | 2018-08-01 | 2018-11-23 | 中国石油天然气股份有限公司 | A method of associated gas after desulfurization is driven using steam carry out viscous crude handle up well viscosity reduction |
| CN111349367A (en) * | 2018-12-21 | 2020-06-30 | 天津中航百慕新材料技术有限公司 | Low-VOC high-weather-resistance self-cleaning fluorocarbon coating and preparation method thereof |
| CN114058420A (en) * | 2021-11-13 | 2022-02-18 | 山东省众力环保科技有限公司 | Hydrogen sulfide remover for oil and gas wells and preparation method thereof |
| CN114293036A (en) * | 2021-12-24 | 2022-04-08 | 南方锰业集团有限责任公司大新锰矿分公司 | Method for inhibiting generation of hydrogen sulfide in leaching process of high-sulfur manganese carbonate ore |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102775977B (en) | 2014-11-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102775977B (en) | Treating agent for inhibiting generation of hydrothion in steam flooding injection well, displacing oil and reducing viscosity and application thereof | |
| CN102828734B (en) | Offshore oilfield water injection well online one-step-process acidification technology | |
| CN103881673B (en) | A kind of injection well oxidation gel breaker and preparation method thereof | |
| CN103013480A (en) | Modified petroleum coke granule composite profile control water blocking agent and multi-round bidirectional blocking control technology | |
| CN102153997A (en) | Hydrogen sulfide treating agent for oil fields and method for treating hydrogen sulfide | |
| CN103806885B (en) | A kind of formation chemistry heat production removing clog in deep reservoir method of injection and extraction system | |
| AU2014329467A1 (en) | Amidoamine gas hydrate inhibitors | |
| CN211847165U (en) | Carbon dioxide stratum sealing system | |
| CN106246156A (en) | Method made by a kind of explosion fracturing acidifying connection | |
| CN102619497B (en) | Method for continuously reducing hydrogen sulfide in oil well shaft | |
| CN102797446B (en) | Steam flooding Injection Well suppresses oil reservoir to generate the method and apparatus of hydrogen sulfide | |
| CN102775978B (en) | Treating agent for inhibiting generation of hydrothion in oil reservoir in steam flooding injection well and application thereof | |
| CN102796504B (en) | Treatment agent of hydrogen sulfide oil displacement, catalysis, viscosity reduction and reduction of steam flooding injection well and application | |
| CN100595255C (en) | Method for preventing and treating hydrogen sulphide in thick oil | |
| CN108397171A (en) | A kind of nitrogen auxiliary carbon dioxide is handled up the method for the fine and close oil of exploitation | |
| CN102796505B (en) | Double effects treatment agent of hydrogen sulfide reduction, catalysis and viscosity reduction in steam flooding injection well and application | |
| CN102492948B (en) | Extract corrosion inhibitor of sweet potato stems and lettuce flower stalks and preparation method thereof | |
| CN202832452U (en) | Treating fluid conveying equipment for steam drive injection well to inhibit oil layer to generate hydrogen sulfide | |
| CN103409122B (en) | A kind of water-soluble anti-H 2 S inhibiter | |
| CN105392366A (en) | Controlling microbial activity and growth in mixed phase system | |
| US2398123A (en) | Control of ph of water from earth bores | |
| CN107288596A (en) | A kind of method that oil recovery factor is improved based on organic base ternary composite driving | |
| CN109294544A (en) | Non-oxidized polymer chemistry de-plugging gel breaker and preparation method thereof | |
| AU2022271313A1 (en) | Chemical compositions and methods of using same for remediating sulfur-containing compositions and other contaminants in fluids | |
| CN103627385A (en) | Temperature-resistant ferrous stabilizer used in acidizing fluid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |