CN1213126C - Environment-friendly type clear paraffin control thinning agent - Google Patents
Environment-friendly type clear paraffin control thinning agent Download PDFInfo
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- CN1213126C CN1213126C CN 03106503 CN03106503A CN1213126C CN 1213126 C CN1213126 C CN 1213126C CN 03106503 CN03106503 CN 03106503 CN 03106503 A CN03106503 A CN 03106503A CN 1213126 C CN1213126 C CN 1213126C
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Abstract
The present invention relates to the field of oil field chemistry application, which is an environment-friendly viscosity-reducing agent for paraffin removal and inhibition. The environment-friendly viscosity-reducing agent comprises: 15 to 30 wt% of hydrocarbon solvent oil, 1 to 5 wt% of polypropylene glycol, 3 to 8 wt% of surface active agent compound, 1 to 3.5 wt% of NaOH, 5 to 7 wt% of waterglass and 50 to 75 wt% of water, wherein the surface active agent compound is prepared from 59% of alkylbenzene sulfonate, 29% of coconut oleic alcohol polyoxyethylene ether as well as 12% of ethyl acetate and epoxyethane. The environment-friendly viscosity-reducing agent has the characteristics of combined removal and inhibition, good pour point depression effect and low cost. When the environment-friendly viscosity-reducing agent is used, paraffin deposit in oil wells can be removed effectively, and the normal production of the oil wells is ensured. The environment-friendly viscosity-reducing agent has the advantages of high efficiency, low toxicity and environmental protection, and the paraffin removal, the paraffin inhibition and the viscosity reduction are combined into integration.
Description
Technical field: the present invention relates to the oilfield chemistry Application Areas, is a kind of control and remove of well paraffin viscosity-depression agent.
Background technology: Daqing oil field has substantially all adopted oil base chemical paraffin removing and inhibitor and water base chemical paraffin inhibitor two big classes since the chemical clear anti-wax technique of beginning experimental study in 1975.Successively develop and promoted: paraffin removers such as No. one, grand celebration, No. two, grand celebration, No. three, grand celebration.The development eighties is also widely applied water base PW8105 paraffin inhibitor chemical.Water based dewaxing agent cost height, effective constituent is few, has also that to add dose big, the problem of the frequent and winter construction difficulty of dosing period ratio.After the nineties, along with the peripheral oil field of grand celebration is developed in succession, contain glue, high-solidification point at the former innage content of wax, height, crude oil water containing is low, viscosity is big, the characteristics that wax precipitation temperature is high, the research and development of novel wax removing agent had new development successively development and popularization the CY-IV type take precautions against cerate clearly.It is big that the oil base wax removing agent adds dose, and the dosing period ratio is more frequent, and medicament generally has toxicity, inflammableness, and there is potential safety hazard in hot weather construction.In the emulsion-type paraffin remover, with dithiocarbonic anhydride emulsion study on the modification more because CS2 toxicity is bigger, Oil and Natural Gas Corporation's dispatch in 1992 bans use of CS2 type paraffin remover.Developed out now with tensio-active agent and lightweight wet goods and water and be mixed with the double effects that the emulsion wax removing agent has wax removal and wax control.The emulsion-type wax removing agent becomes the developing direction of current wax removing agent because of its advantage that combines oil base and water based dewaxing agent, the environmental-friendly type emulsion wax removing agent should have anti-clearly in conjunction with, pour point depression is effective and characteristics cheaply.
Summary of the invention: the objective of the invention is to develop a kind of not only can wax removal, and can wax control and viscosity reduction and pour point depression, good to the breakdown of emulsion of crude oil, to not influence of dehydrating of crude oil, with clear, the anti-clear paraffin inhibitor and viscosity inhibitor of bonded.The present invention is by varsol oil, polypropylene glycol, 59% alkylbenzene sulfonate adds 29% polyoxyethylated coconut oil alcohol and 12% ethyl acetate and oxyethane synthetic surfactant blend, NaOH, water glass, water is formed, and prescription by its weight ratio is: varsol oil: polypropylene glycol: 59% alkylbenzene sulfonate adds 29% polyoxyethylated coconut oil alcohol and 12% ethyl acetate and oxyethane synthetic surfactant blend: NaOH: water glass: water=15～30%: 1～5%: 3～8%: 1～3.5%: 5～7%: 50～75%.Clear paraffin inhibitor and viscosity inhibitor has anti-clearly combination, the effective characteristics cheaply that reach of pour point depression, can remove oil well paraffinication effectively behind employing the present invention, guarantees the oil well ordinary production, and has the high-efficiency low-toxicity environmental protection, reaches the advantage that integrates wax removal, wax control, viscosity reduction.
Embodiment 1: adopt lightweight oil, polypropylene glycol, 59% alkylbenzene sulfonate to add 29% polyoxyethylated coconut oil alcohol and 12% ethyl acetate and oxyethane synthetic surfactant blend, NaOH, water glass is mixed with the aqueous solution.Be made into lightweight oil: polypropylene glycol: 59% alkylbenzene sulfonate adds 29% polyoxyethylated coconut oil alcohol and 12% ethyl acetate and oxyethane synthetic surfactant blend: NaOH: water glass: water=20%: 5%: 5%: 2.0%: 5%: 63% clear paraffin inhibitor and viscosity inhibitor;
Embodiment 2: the method with embodiment 1 can be made into lightweight oil: polypropylene glycol: 59% alkylbenzene sulfonate adds 29% polyoxyethylated coconut oil alcohol and 12% ethyl acetate and oxyethane synthetic surfactant blend: NaOH: water glass: water=15%: 4%: 2.0%: 7%: 72% clear paraffin inhibitor and viscosity inhibitor.
According to on-the-spot oil well paraffinication practical situation, select the proportioning of each component of clear paraffin inhibitor and viscosity inhibitor, can construct after preparing.This wax removing agent is according to the similar principle that mixes, dissolved bitumen, colloid, dead oil, resin etc. effectively, but also have good viscosity reduction and pour point depression effect.This medicament mainly by paraffin remover, paraffin inhibitor chemical, dispersion agent, mutual solvent, and emulsion splitter etc. form.It is the foreign minister by water, and oil-soluble substance is interior phase, and breakdown of emulsion shared oil and water two-phase reach the purpose that integrates wax removal, wax control, viscosity reduction when temperature reaches more than 45 ℃.This medicament adopts the oil sets annular space dosing to carry out dosing, and technology is simple and easy to do, does not stop production during the dosing, does not influence oil well output, and this wax removing agent is less to dehydrating of crude oil and post-processed influence.Dosing cycle and add dose and decide on concrete oil well.After adopting this wax removing agent, can reduce wax card and paraffin blockage phenomenon, reduce operation inspection pump number of times, avoid hot influence of washing oil well output.Site operation: 1, periodically add pit shaft and dispose liquid, tentatively definite one～three month dosing cycle is not waited, and adds about dose 100～200kg at every turn.2, this well load-position diagram of dosing before measurement, electric current and understanding production fluid amount and sample examination are analyzed moisture.3, medicament adds from oil sets annular space.(1) opens sleeve valve, put sleeve pipe gas.(2) pipe nipple and funnel are received sleeve valve, soup is poured into.(3) fallen behind the soup, removed cast feeder, shut sleeve valve afterwards.(4) oil well ordinary production during dosing.4. admission data, every 3d surveys primary current after the dosing, gets oil sample one time, and observes the production fluid quantitative changeization, load-position diagram of every 15d survey, liquid level.
Claims (1)
1, a kind of clear paraffin inhibitor and viscosity inhibitor, by varsol oil, polypropylene glycol, 59% alkylbenzene sulfonate adds 29% polyoxyethylated coconut oil alcohol and 12% ethyl acetate and oxyethane synthetic surfactant blend, NaOH, water glass, water is formed, and it is characterized in that prescription by its weight ratio is: varsol oil: polypropylene glycol: 59% alkylbenzene sulfonate adds 29% polyoxyethylated coconut oil alcohol and 12% ethyl acetate and oxyethane synthetic surfactant blend: NaOH: water glass: water=15～30%: 1～5%: 3～8%: 1～3.5%: 5～7%: 50～75%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03106503 CN1213126C (en) | 2003-02-25 | 2003-02-25 | Environment-friendly type clear paraffin control thinning agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03106503 CN1213126C (en) | 2003-02-25 | 2003-02-25 | Environment-friendly type clear paraffin control thinning agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1524924A CN1524924A (en) | 2004-09-01 |
| CN1213126C true CN1213126C (en) | 2005-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03106503 Expired - Fee Related CN1213126C (en) | 2003-02-25 | 2003-02-25 | Environment-friendly type clear paraffin control thinning agent |
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| Country | Link |
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| CN (1) | CN1213126C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101712787B (en) * | 2008-10-08 | 2012-01-11 | 中国石油天然气集团公司 | Sulfonic acid-containing organic macromolecule reaction type crude oil flow modifying agent |
| CN101851494B (en) * | 2009-08-14 | 2012-11-07 | 新疆德蓝股份有限公司 | Oil-soluble viscosity depressant |
| CN102517104B (en) * | 2011-12-23 | 2015-03-18 | 上海应用技术学院 | Diesel oil pour point depressant composition, its preparation method and application |
| CN102634390B (en) * | 2012-04-24 | 2015-04-15 | 上海应用技术学院 | Acetate solvent based diesel oil pour point depressant, preparation method and application thereof |
| CN102888214B (en) * | 2012-10-24 | 2014-10-01 | 中国石化集团河南石油勘探局双河社区服务中心 | Emulsion-type oil well viscosity-breaking paraffin removing and inhibiting agent and application method thereof |
| CN103923630B (en) * | 2014-04-21 | 2016-08-24 | 大庆华营化工有限公司 | A kind of emulsion Wax removing agent |
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2003
- 2003-02-25 CN CN 03106503 patent/CN1213126C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1524924A (en) | 2004-09-01 |
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Granted publication date: 20050803 Termination date: 20100225 |