CN1775895A - Oil-soluble oil well solid slow-release anti-scale wax-preventing agent - Google Patents
Oil-soluble oil well solid slow-release anti-scale wax-preventing agent Download PDFInfo
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- CN1775895A CN1775895A CN 200510134708 CN200510134708A CN1775895A CN 1775895 A CN1775895 A CN 1775895A CN 200510134708 CN200510134708 CN 200510134708 CN 200510134708 A CN200510134708 A CN 200510134708A CN 1775895 A CN1775895 A CN 1775895A
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Abstract
The invention relates to a oil solved type oil well solid slow release type antiscale paraffin inhibitor. The feature is that it includes the following constituents: ethylene-acetic acid ethylene copolymer 10-30%, solid polyethylene 10-30%, organic phosphonate 30-40%, surface activator 5-15%, and releasing controlling additive 10-20%. It is slowing releasing and coming into oil well lifting system and surface gathering system in oil gathering liquid system to perform the function of antiscale and paraffin inhibitor.
Description
Technical field:
The present invention relates to the used a kind of auxiliary agent in oil recovery field, oil field, especially a kind of oil-soluble oil well solid slow-release anti-scale paraffin inhibitor chemical.
Background technology:
In the oil production middle and later periods, oil well hoisting system, surface gathering system pipeline scale, the cured phenomenon of knot are very serious, the operational efficiency that directly causes oil well to adopt liquid measure decline, pump detection period weak point, collection oil transportation field equipment seriously descends, also bring simultaneously other harm as: 1. cause oil well to stop production or the underproduction, influence crude production rate; 2. increase fluidic drag losses in the pipeline, the pipeline back pressure is raise, the energy consumption of transferpump rises; When 3. dirt is very serious, cause line clogging, holddown, influence production tasks such as normal oil transportation; 4. cause the pollution and the loss of containers store material and pipe-line transportation material; 5. cause easily that underdeposit corrosion causes pipe perforation.Now the oil field adopts that heat is washed, pickling solves this problem more, and the pickling dirt is handled dirty drawback: 1. accelerated corrosion, the work-ing life of reducing pipeline and equipment; 2. the spent pickle liquor difficult treatment easily causes pollution of waterhead; 3. cost is higher, trivial operations; 4. some " mixed dirt " acid solution is not dissolved, and cleaning performance is bad.
Summary of the invention:
The objective of the invention is to solve existing middle pickling descaling, difficult, the difficult deficiency of operation of scale inhibitor interpolation, a kind of oil-soluble oil well solid slow-release anti-scale paraffin inhibitor chemical is provided, this paraffin inhibitor chemical slowly discharges in oil well produced liquid (extraction liquid is moisture less than 50%) system and enters oil well hoisting system and surface gathering system with extraction liquid, thereby plays antiscale, wax control result.
The technical solution adopted in the present invention is: this oil-soluble oil well solid slow-release anti-scale paraffin inhibitor chemical comprises following each component: following each component is proportioning by mass percentage: ethylene-vinyl acetate copolymer 10～30%, solid polyethylene 10～30%, organic phosphonate 30～40%, tensio-active agent 5～15%, controlled-release of additives 10～20%.
Above-mentioned ethylene-vinyl acetate copolymer EVA is 18～30%; Solid polyethylene is low-pressure high-density polyethylene or hp-ldpe; Tensio-active agent is polyethenoxy alkylphenols or amphoteric imidazoline, and the polymerization degree of polyethenoxy alkylphenols is 5～7; Organic phosphonate is Amino Trimethylene Phosphonic Acid, ethylenediamine tetramethylene phosphonic acid salt or 1-hydroxy ethylidene-1, the 1-bisphosphate; Controlled-release of additives is methylphenanthrene, carbon dust or vinylformic acid and maleic acid, and the molecular weight of vinylformic acid and maleic acid is 1300～1500.
The preparation method: the medicament in the prescription is the fusion cementing reaction under high temperature (150～190 ℃), forms the homogeneous mixture, through forming machine, and the high pressure extruding.
The invention has the beneficial effects as follows: take technique scheme, anti-scale wax-preventing agent of the present invention can solve the drawback of oil field acid scale removal effectively, and is easy to use, safe, lasting; Be a kind of practicality, efficient, long lasting anti-scale wax-preventing agent, inhibiting rate for wax precipitation 〉=73%, antiscaling rate 〉=96%, result of use 〉=300 day.
Be effect experiment of the present invention below:
Experiment condition: pressure: 10MPa temperature: 50 ℃ of ambient conditions: crude oil.
Experimental technique: in autoclave, add 600ml crude oil, add one of the anti-wax stone of solid antiscale, after the sealing, be forced into 10MPa with nitrogengas cylinder, 50 ℃ of following constant temperature are tested.After test finishes, use the gasoline fast processing, weigh.
Experimental result:
| Sequence number | Dissolution rate (g/d) | Host dissolution rate (mg/g) | Antiscaling rate/% | Inhibiting rate for wax precipitation/% |
| 1 # | 0.275 | 2.51 | 98 | 73 |
| 2 # | 0.270 | 2.37 | 98 | 75 |
| 3 # | 0.220 | 2.08 | 96 | 79 |
Embodiment:
Be further described below in conjunction with specific embodiment, this oil-soluble oil well solid slow-release anti-scale paraffin inhibitor chemical comprises following each component: following each component is proportioning by mass percentage: ethylene-vinyl acetate copolymer 10～30%, solid polyethylene 10～30%, organic phosphonate 30～40%, tensio-active agent 5～15%, controlled-release of additives 10～20%.Therein ethylene-vinyl acetate copolymer eva is 18～30%; Solid polyethylene is low-pressure high-density polyethylene or hp-ldpe, and 18D and 18G effect that low-pressure high-density polyethylene or hp-ldpe are produced with Daqing Petrochemical Complex are best; Tensio-active agent is polyethenoxy alkylphenols or amphoteric imidazoline, and the polymerization degree of polyethenoxy alkylphenols is 5～7; Organic phosphonate is Amino Trimethylene Phosphonic Acid, ethylenediamine tetramethylene phosphonic acid salt or 1-hydroxy ethylidene-1, the 1-bisphosphate; Controlled-release of additives is methylphenanthrene, carbon dust or vinylformic acid and maleic acid, and the molecular weight of vinylformic acid and maleic acid is 1300～1500.
Macromolecular material can be dissolved in crude oil in the present invention, and macromolecular material and medicament enter crude oil system, plays the effect of antiscale wax control.In addition, it is to form a large amount of netted microvoids that polymer carrier and medicament form, and under the effect of controlled-release of additives, medicament slowly discharges into crude oil system.
This product is used in the low moisture oilfield, when the inspection pump, put in the medicine carrying device, be installed under the oil extraction pump, impacting the prescribe medicine piece at extraction liquid slowly discharges, medicament is dissolved, enter afterwards in the extraction liquid system, and enter oil well hoisting system and surface gathering system, play the effect of antiscale wax control with extraction liquid.
Embodiment 1, the ethylene-vinyl acetate copolymer with 10%, 30% low-pressure high-density polyethylene, 40% Amino Trimethylene Phosphonic Acid, 5% polyethenoxy alkylphenols and 15% methylphenanthrene are at 150 ℃ of following fusion cementing reactions, form the homogeneous mixture, make this anti-scale wax-preventing agent through forming machine high pressure extruding.
Embodiment 2, with 15% ethylene-vinyl acetate copolymer, 20% hp-ldpe, 15% amphoteric imidazoline, 30% ethylenediamine tetramethylene phosphonic acid salt and 20% carbon dust at 130 ℃ of following fusion cementing reactions, form the homogeneous mixture, make this anti-scale wax-preventing agent through forming machine high pressure extruding.
Embodiment 3, with 30% ethylene-vinyl acetate copolymer, 10% hp-ldpe, 10% amphoteric imidazoline, 40%1-hydroxy ethylidene-1,1-bisphosphate and 10% vinylformic acid and maleic acid are at 190 ℃ of following fusion cementing reactions, form the homogeneous mixture, make this anti-scale wax-preventing agent through forming machine high pressure extruding.
Claims (6)
1, a kind of oil-soluble oil well solid slow-release anti-scale paraffin inhibitor chemical is characterized in that: comprise following each component: following each component is proportioning by mass percentage: ethylene-vinyl acetate copolymer 10～30%, solid polyethylene 10～30%, organic phosphonate 30～40%, tensio-active agent 5～15%, controlled-release of additives 10～20%.
2, according to right 1 described oil-soluble oil well solid slow-release anti-scale paraffin inhibitor chemical, it is characterized in that: ethylene-vinyl acetate copolymer EVA is 18～30%.
3, according to right 1 described oil-soluble oil well solid slow-release anti-scale paraffin inhibitor chemical, it is characterized in that: solid polyethylene is low-pressure high-density polyethylene or hp-ldpe.
4, according to right 1 described oil-soluble oil well solid slow-release anti-scale paraffin inhibitor chemical, it is characterized in that: tensio-active agent is polyethenoxy alkylphenols or amphoteric imidazoline, and the polymerization degree of polyethenoxy alkylphenols is 5～7.
5, according to right 1 described oil-soluble oil well solid slow-release anti-scale paraffin inhibitor chemical, it is characterized in that: organic phosphonate is Amino Trimethylene Phosphonic Acid, ethylenediamine tetramethylene phosphonic acid salt or 1-hydroxy ethylidene-1, the 1-bisphosphate.
6, according to right 1 described oil-soluble oil well solid slow-release anti-scale paraffin inhibitor chemical, it is characterized in that: controlled-release of additives is methylphenanthrene, carbon dust or vinylformic acid and maleic acid, and the molecular weight of vinylformic acid and maleic acid is 1300～1500.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510134708 CN1775895A (en) | 2005-12-19 | 2005-12-19 | Oil-soluble oil well solid slow-release anti-scale wax-preventing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510134708 CN1775895A (en) | 2005-12-19 | 2005-12-19 | Oil-soluble oil well solid slow-release anti-scale wax-preventing agent |
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| CN1775895A true CN1775895A (en) | 2006-05-24 |
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| CN 200510134708 Pending CN1775895A (en) | 2005-12-19 | 2005-12-19 | Oil-soluble oil well solid slow-release anti-scale wax-preventing agent |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100560682C (en) * | 2007-12-27 | 2009-11-18 | 大庆石油学院 | A kind of bottom hole sedimentation type anti-scaling anti-wax agent |
| CN101235280B (en) * | 2008-03-04 | 2010-06-23 | 西南石油大学 | Asphaltene deposition solid inhibitor for light oil exploitation |
| CN101921582A (en) * | 2010-08-20 | 2010-12-22 | 中国石油天然气股份有限公司 | Composite dirt blocking remover for oil-water well |
| CN101993685A (en) * | 2009-08-12 | 2011-03-30 | 中国石油天然气股份有限公司 | Composite antiscale agent |
| CN105038750A (en) * | 2015-07-09 | 2015-11-11 | 陕西森瑞石油技术开发有限公司 | Controlled-release scale inhibitor in oil well fracturing seam and preparation method for controlled-release scale inhibitor |
| CN105602539A (en) * | 2016-01-20 | 2016-05-25 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Scale inhibitor formula for intraformational multi-crack fracturing for oilfields and preparation method |
| CN107987818A (en) * | 2017-11-23 | 2018-05-04 | 克拉玛依新科澳石油天然气技术股份有限公司 | Oil-base paraffin remover and preparation method thereof |
| CN109868127A (en) * | 2019-03-13 | 2019-06-11 | 西安石油大学 | A kind of inline type paraffin removing with chemical method ball and its preparation method and application |
| CN109897734A (en) * | 2019-03-13 | 2019-06-18 | 西安石油大学 | A kind of slow-release paraffin removing with chemical method ball and its preparation method and application |
| CN112360396A (en) * | 2020-11-02 | 2021-02-12 | 中国石油天然气股份有限公司 | Solid polymer slow-release wax-proof ball and preparation method and use method thereof |
| CN113249106A (en) * | 2021-05-14 | 2021-08-13 | 中国石油大学(华东) | Solid antiscaling block and preparation method thereof |
| CN114106803A (en) * | 2021-11-24 | 2022-03-01 | 克拉玛依新科澳石油天然气技术股份有限公司 | Oil well slow-speed descaling antiscaling agent and preparation and use methods thereof |
-
2005
- 2005-12-19 CN CN 200510134708 patent/CN1775895A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100560682C (en) * | 2007-12-27 | 2009-11-18 | 大庆石油学院 | A kind of bottom hole sedimentation type anti-scaling anti-wax agent |
| CN101235280B (en) * | 2008-03-04 | 2010-06-23 | 西南石油大学 | Asphaltene deposition solid inhibitor for light oil exploitation |
| CN101993685A (en) * | 2009-08-12 | 2011-03-30 | 中国石油天然气股份有限公司 | Composite antiscale agent |
| CN101921582A (en) * | 2010-08-20 | 2010-12-22 | 中国石油天然气股份有限公司 | Composite dirt blocking remover for oil-water well |
| CN101921582B (en) * | 2010-08-20 | 2013-02-13 | 中国石油天然气股份有限公司 | Composite dirt blocking remover for oil-water well |
| CN105038750B (en) * | 2015-07-09 | 2018-04-03 | 陕西森瑞石油技术开发有限公司 | Sustained release scale preventative and preparation method thereof in a kind of wellfracturing seam |
| CN105038750A (en) * | 2015-07-09 | 2015-11-11 | 陕西森瑞石油技术开发有限公司 | Controlled-release scale inhibitor in oil well fracturing seam and preparation method for controlled-release scale inhibitor |
| CN105602539A (en) * | 2016-01-20 | 2016-05-25 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Scale inhibitor formula for intraformational multi-crack fracturing for oilfields and preparation method |
| CN105602539B (en) * | 2016-01-20 | 2018-07-20 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Multiple crack fracturing scale inhibition agent prescription and preparation method in a kind of oil field layer |
| CN107987818A (en) * | 2017-11-23 | 2018-05-04 | 克拉玛依新科澳石油天然气技术股份有限公司 | Oil-base paraffin remover and preparation method thereof |
| CN109868127A (en) * | 2019-03-13 | 2019-06-11 | 西安石油大学 | A kind of inline type paraffin removing with chemical method ball and its preparation method and application |
| CN109897734A (en) * | 2019-03-13 | 2019-06-18 | 西安石油大学 | A kind of slow-release paraffin removing with chemical method ball and its preparation method and application |
| CN112360396A (en) * | 2020-11-02 | 2021-02-12 | 中国石油天然气股份有限公司 | Solid polymer slow-release wax-proof ball and preparation method and use method thereof |
| CN113249106A (en) * | 2021-05-14 | 2021-08-13 | 中国石油大学(华东) | Solid antiscaling block and preparation method thereof |
| CN114106803A (en) * | 2021-11-24 | 2022-03-01 | 克拉玛依新科澳石油天然气技术股份有限公司 | Oil well slow-speed descaling antiscaling agent and preparation and use methods thereof |
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