CN103359818A - Comprehensive reacted acid treating agent for reacted acid flow-back liquid of oil well - Google Patents
Comprehensive reacted acid treating agent for reacted acid flow-back liquid of oil well Download PDFInfo
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- CN103359818A CN103359818A CN2012103079266A CN201210307926A CN103359818A CN 103359818 A CN103359818 A CN 103359818A CN 2012103079266 A CN2012103079266 A CN 2012103079266A CN 201210307926 A CN201210307926 A CN 201210307926A CN 103359818 A CN103359818 A CN 103359818A
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Abstract
The invention provides a comprehensive reacted acid treating agent for reacted acid flow-back liquid of an oil well, which relates to the technical field of oil wells, and in particular relates to the technical field of oil-well immovable string acidifying process. The treating agent comprises polyaspartic acid, sodium tripolyphosphate, sodium hydroxide, sodium carbonate, imidazoline, polyamine polyether phosphonate, and polyamino polyether methylene phosphonate which accounts for 190-250 ppm of the total mass of the comprehensive reacted acid treating agent. According to the comprehensive reacted acid treating agent, the critical process in accordance with the property of reacted acid fluid is implemented, a great space is provided for selection of a complexing agent and a neutralizer in the comprehensive reacted acid treating agent, and a firm foundation for constant improvements of the process is laid. The comprehensive reacted acid treating agent can be applied to oil field production, massive manpower and material resources can be saved, and the production can be greatly improved.
Description
Technical field
The present invention relates to the oil well technical field, particularly oil well fixed tubular column Acidizing Process Technique field.
Background technology
Discharge opeing treatment process process is returned in the residual acid of oil well: the acidizing fluid of acidifying well injects the stratum by the oil jacket annular space of oil well, return after the reaction of dirt thing and reservoir choke thing with becoming on the tube wall and to discharge the stratum, mix at the tail pipe place of oil pipe and residual sour comprehensive treatment agent and discharge through oil pipe.The feature of this residual acid of row of returning is: 1. the residual acid concentration of hydrochloric acid and hydrofluoric acid is high.2. calcium ion, iron ion and silicon ion content are high.When research oil well fixed tubular column acidification technique, we find when row and residual sour comprehensive treatment agent interaction are returned in residual acid from the stratum after, and the pH value that returns discharge opeing can rise between 6～7 from 1, but discharge opeing fluid properties extreme difference can occur returning, cause the row of returning not smooth, latch up phenomenon can occur when serious.
Polyamino polyether base methylenephosphonic acid (PAPEMP) is a kind of macromole organic phosphoric acid of the exploitation nineties in 20th century, and it is to be used for water treatment as excellent calcium carbonate Scale inhibitors.People constantly research and develop its application performance since come out, and up to the present relatively generally acknowledge following points: 1. have higher calcium tolerance.2. metal ion there is good stability.3. have very strong dispersiveness and stop calcium sulfate and the ability of calcium phosphate generation.4. can solve the corrosion-mitigation scale-inhibition problem under high concentration multiple, high-temperature and the high alkalinity severe condition.
Summary of the invention
The present invention seeks to propose the residual sour comprehensive treatment agent that the discharge opeing treatment process is returned in a kind of residual acid that can improve the fluid properties of the residual acid of oil well fixed tubular column acidifying.
The present invention includes poly aspartic acid, tripoly phosphate sodium STPP, sodium hydroxide, yellow soda ash, tetrahydroglyoxaline and polyamino polyethers phosphonic acid salt, the present invention also comprises the polyamino polyether base methylenephosphonic acid of the 190～250ppm that accounts for residual sour comprehensive treatment agent total mass.
In oil well fixed tubular column acidification technique implementation process, the contriver finds that the fluid properties that returns discharge opeing fluctuates larger with the rising of the pH value that returns discharge opeing, be solidifying thick shape when pH value rises to 2.5～3.5 above solution, salting-out phenomenon can occur, have a strong impact on the row of returning of residual acid solution.The contriver studies affecting the factor that this raffinate stream volume property changes specially accordingly, and the result shows that polyethers polyamino class material has larger help to the fluid properties that improves this residual acid.In addition, the essential implementation of oil well fixed tubular column acidification technique is two aspects: the one, and the pH value that keeps returning discharge opeing is guaranteed pit shaft, pump and gathering system are occured without corrosion phenomenon about 6～7; The 2nd, to return the fluid properties of discharge opeing and will get well, the two connects each other indispensable.
The present invention is added in the residual sour comprehensive treatment agent with the PAPEMP of 190～250ppm concentration, residual acid is returned discharge opeing and is risen at pH value at 6～7 o'clock from 1, the fluid properties that discharge opeing is returned in residual acid in order, guarantee that this residual acid returns discharge opeing safety and discharge smoothly from oil pipe, and when the pH value of residual acid rises to 10.5 from 7, also can keep certain effect.So not only solved the critical process of residual sour fluid properties, and for the selection of complexing agent and neutralizing agent in the residual sour comprehensive treatment agent provides great space, established solid basis for constantly improving this technique, also greatly saved the activity duration.In case this Technology is applied in the field produces, not only save a large amount of man power and materials, produce simultaneously good economic benefit.
In addition, poly aspartic acid of the present invention, tripoly phosphate sodium STPP, sodium hydroxide, yellow soda ash, tetrahydroglyoxaline and polyamino polyethers phosphonic acid salt account for respectively 20～25%, 2～6%, 10～15%, 8～10%, 3～6% and 8～15% of the residual sour comprehensive treatment agent total mass that do not add polyamino polyether base methylenephosphonic acid.
Embodiment
One, configuration component A:
20～25%, 2～6%, 10～15%, 8～10%, 3～6% and 8～15% poly aspartic acid, tripoly phosphate sodium STPP, sodium hydroxide, yellow soda ash, tetrahydroglyoxaline, polyamino polyethers phosphonic acid salt and the water that account for respectively total mass are mixed to 100%, form component A.
What determine according to the prescription of each oil well acidation each component, can for following concrete proportioning (unit: kg):
| ? | Poly aspartic acid | Tripoly phosphate sodium STPP | Sodium hydroxide | Yellow soda ash | Tetrahydroglyoxaline | Polyamino polyethers phosphonic acid salt | Water |
| Prescription 1 | 20 | 5 | 10 | 8 | 6 | 8 | 43 |
| Prescription 2 | 24 | 6 | 12 | 10 | 5 | 10 | 33 |
| Prescription 3 | 25 | 2 | 15 | 9 | 3 | 15 | 31 |
Two, the residual sour comprehensive treatment agent of configuration:
The polyamino polyether base methylenephosphonic acid that in the above component A that is set to, adds 190～250ppm.
As in above prescription 1,2,3, adding respectively the example of polyamino polyether base methylenephosphonic acid:
1, in prescription 1, adds the polyamino polyether base methylenephosphonic acid of 190 ppm, form residual sour comprehensive treatment agent 1.
2, in prescription 2, add the polyamino polyether base methylenephosphonic acid of 200 ppm, form residual sour comprehensive treatment agent 2.
3, in prescription 3, add the polyamino polyether base methylenephosphonic acid of 250 ppm, form residual sour comprehensive treatment agent 3.
Three, use example:
The residual acid that each the residual sour comprehensive treatment agent that forms is applied to respectively oil well is returned in the discharge opeing treatment process, residual acid is returned discharge opeing and is risen at pH value at 6～7 o'clock from 1, the fluid properties that discharge opeing is returned in this residual acid in order, guarantee that this residual acid returns discharge opeing safety and discharge smoothly from oil pipe, and when the pH value of residual acid rises to 10.5 from 7, also can keep certain effect.
Claims (2)
1. the residual sour comprehensive treatment agent of discharge opeing is returned in the residual acid of oil well, comprise poly aspartic acid, tripoly phosphate sodium STPP, sodium hydroxide, yellow soda ash, tetrahydroglyoxaline and polyamino polyethers phosphonic acid salt, characterized by further comprising the polyamino polyether base methylenephosphonic acid of the 190～250ppm that accounts for residual sour comprehensive treatment agent total mass.
2. the residual sour comprehensive treatment agent of discharge opeing is returned in the residual acid of described oil well according to claim 1, it is characterized in that described poly aspartic acid, tripoly phosphate sodium STPP, sodium hydroxide, yellow soda ash, tetrahydroglyoxaline and polyamino polyethers phosphonic acid salt account for respectively 20～25%, 2～6%, 10～15%, 8～10%, 3～6% and 8～15% of the residual sour comprehensive treatment agent total mass that do not add polyamino polyether base methylenephosphonic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103079266A CN103359818A (en) | 2012-08-28 | 2012-08-28 | Comprehensive reacted acid treating agent for reacted acid flow-back liquid of oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012103079266A CN103359818A (en) | 2012-08-28 | 2012-08-28 | Comprehensive reacted acid treating agent for reacted acid flow-back liquid of oil well |
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| CN103359818A true CN103359818A (en) | 2013-10-23 |
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| CN2012103079266A Pending CN103359818A (en) | 2012-08-28 | 2012-08-28 | Comprehensive reacted acid treating agent for reacted acid flow-back liquid of oil well |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101172719A (en) * | 2006-10-31 | 2008-05-07 | 中国石油化工股份有限公司 | Dirty blocking inhibitor and application in water treatment thereof |
| JP2010172814A (en) * | 2009-01-29 | 2010-08-12 | Hitachi Plant Technologies Ltd | Coagulant for purifying water, water purifying method and water purifying apparatus |
| CN101805090A (en) * | 2010-02-23 | 2010-08-18 | 北京欧泰克石油工程技术有限责任公司 | Process for treating fracturing flow-back fluid of oil well |
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2012
- 2012-08-28 CN CN2012103079266A patent/CN103359818A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101172719A (en) * | 2006-10-31 | 2008-05-07 | 中国石油化工股份有限公司 | Dirty blocking inhibitor and application in water treatment thereof |
| JP2010172814A (en) * | 2009-01-29 | 2010-08-12 | Hitachi Plant Technologies Ltd | Coagulant for purifying water, water purifying method and water purifying apparatus |
| CN101805090A (en) * | 2010-02-23 | 2010-08-18 | 北京欧泰克石油工程技术有限责任公司 | Process for treating fracturing flow-back fluid of oil well |
Non-Patent Citations (1)
| Title |
|---|
| 肖中华: "酸液对抽油泵的影响", 《科技创业》 * |
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Application publication date: 20131023 |