CN1149613A - Wax removing agent for oil well capable of substituting hot washing - Google Patents
Wax removing agent for oil well capable of substituting hot washing Download PDFInfo
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- CN1149613A CN1149613A CN 95118472 CN95118472A CN1149613A CN 1149613 A CN1149613 A CN 1149613A CN 95118472 CN95118472 CN 95118472 CN 95118472 A CN95118472 A CN 95118472A CN 1149613 A CN1149613 A CN 1149613A
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- wax
- removing agent
- oil
- well
- wax removing
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Abstract
The technology of hot water flushing can be replaced by adding wax removing agent in the well. It is suitable for removing wax for the well of wax base crude oil of oil field in the stage of low water content. Said wax removing agent is a mixture of multiple components. The recipe by weight percent is as follows: minerla ether 25%, xylene 55%, tower bottom oil 10%, tea 3% and Lissapol N 7%. Its advantages are quick speed for dissolving wax, high ratio of viscosity breaking, good reuslt for wax removing and capable of substituting for hot water-flushing of oil well.
Description
But the present invention relates to a kind of Wax removing agent for oil well of substituting hot washing, belong to the oilfield chemistry Application Areas.
Paraffinic crude hangs down water-cut stage in the oil field at present, mainly adopts two kinds of clear, wax control measures, and a kind of is to drop into the oil base wax removing agent in oil well, and another kind is to use the hot water well-flushing.The oil base wax removing agent by tower at the bottom of oil, phosphoric acid ester and tensio-active agent form, oil base wax removing agent every 1-2 month adding 300-500k8 in the oil well, can prolong the hot washing period 2-3 time doubly, the weak point of this kind wax removing agent is: wax removal speed is slow, viscosity reducing effect is undesirable, it is big to add dose, and can not fundamentally solve the technical problem with the method substituting hot washing of wax removing agent.The weak point of hot water well-flushing wax removal is: after water is filled pit shaft, because the pressure of water is big, can pour in down a chimney into the stratum, cause that then the stratum CLAY MINERALS AND THEIR SIGNIFICANCE expands, make the permeability plugging of oil reservoir around the pit shaft and influence production capacity, the hot water that injects into well in addition generally needs 2-3 days time just can exhaust, and influences oil well output.
The objective of the invention is to avoid the weak point of above-mentioned prior art, and a kind of new Wax removing agent for oil well is provided, behind this kind of the interior adding of oil well wax removing agent, can replace the hot water well-flushing.
Purpose of the present invention can reach by the following technical programs:
In order to improve wax removal speed and viscosity break ratio, collected over one hundred kind of medicine with wax removal effect, every kind of medicine wax removal, viscosity reduction and wax control test have been carried out, and various medicines are carried out the indoor comparative test, find out best sherwood oil of wax removal speed and dimethylbenzene, find out wax control result is good and oil base solution mixes alkylphenol polyoxyethylene again and carry out composite and obtain this wax removing agent.
This kind wax removing agent is a multicomponent mixture, colourless transparent liquid, and its weight percent prescription is: sherwood oil: dimethylbenzene 25%: oil at the bottom of the tower 55%: the bitter edible plant 10%: alkylphenol polyoxyethylene 3%: 7%.According to the difference of the low water-cut stage well water amount in oil field, can suitably adjust the ratio of alkylphenol polyoxyethylene during use, moisture low more consumption is few more, ratio that can corresponding increase sherwood oil.Earlier by weight percentage sherwood oil, dimethylbenzene are put into Agitation Tank during preparation, add the solid bitter edible plant again, stirring makes its slow dissolving, adds oil at the bottom of the tower, alkylphenol polyoxyethylene again, and restir evenly gets final product.To notice during preparation that the person is anticorrosion.
Compared with the prior art the present invention has advantages such as molten wax speed is fast, viscosity break ratio is high, wax control result is good, periodically adds this kind wax removing agent and can replace the hot water well-flushing in well.
During on-the-spot the use, open sleeve gate, bleed off sleeve pipe gas, funnel is connected with sleeve gate with elbow,, in 30-60 days dosing cycle, in the dosing cycle, can replace the hot water well-flushing the 1-2% of the disposable adding individual well of wax removing agent daily fluid production rate.No Open Flames during on-the-spot the use.
Claims (1)
- But a kind of Wax removing agent for oil well of substituting hot washing, it is characterized in that: it is applicable to that the paraffinic crude oil field hangs down water-cut stage, periodically add this kind wax removing agent and can replace the hot water well-flushing in well, this kind wax removing agent weight percent prescription is: sherwood oil: dimethylbenzene 25%: oil at the bottom of the tower 55%: the bitter edible plant 10%: 3%, alkylphenol polyoxyethylene 7%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95118472 CN1149613A (en) | 1995-10-31 | 1995-10-31 | Wax removing agent for oil well capable of substituting hot washing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95118472 CN1149613A (en) | 1995-10-31 | 1995-10-31 | Wax removing agent for oil well capable of substituting hot washing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1149613A true CN1149613A (en) | 1997-05-14 |
Family
ID=5081719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95118472 Pending CN1149613A (en) | 1995-10-31 | 1995-10-31 | Wax removing agent for oil well capable of substituting hot washing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1149613A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102604615A (en) * | 2012-01-18 | 2012-07-25 | 北京博德世达石油技术有限公司 | High-effective, low-toxic and safe oil-base paraffin remover for oil well |
| CN106795425A (en) * | 2014-07-15 | 2017-05-31 | 萨索尔功能化学品有限公司 | Composition and method for controlling paraffin and pitch Geological Problems in well |
| CN109762545A (en) * | 2019-02-27 | 2019-05-17 | 中国石油天然气股份有限公司长庆油田分公司第十二采油厂 | A kind of well wellbore deep play acting type Wax removing agent and preparation method thereof |
-
1995
- 1995-10-31 CN CN 95118472 patent/CN1149613A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102604615A (en) * | 2012-01-18 | 2012-07-25 | 北京博德世达石油技术有限公司 | High-effective, low-toxic and safe oil-base paraffin remover for oil well |
| CN106795425A (en) * | 2014-07-15 | 2017-05-31 | 萨索尔功能化学品有限公司 | Composition and method for controlling paraffin and pitch Geological Problems in well |
| CN109762545A (en) * | 2019-02-27 | 2019-05-17 | 中国石油天然气股份有限公司长庆油田分公司第十二采油厂 | A kind of well wellbore deep play acting type Wax removing agent and preparation method thereof |
| CN109762545B (en) * | 2019-02-27 | 2021-03-02 | 中国石油天然气股份有限公司长庆油田分公司第十二采油厂 | Oil well shaft deep-acting wax removing and preventing agent and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |