CN100395305C - Acid surface active agent oil well leaking stoppage technology and its formula - Google Patents
Acid surface active agent oil well leaking stoppage technology and its formula Download PDFInfo
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- CN100395305C CN100395305C CNB2005100721190A CN200510072119A CN100395305C CN 100395305 C CN100395305 C CN 100395305C CN B2005100721190 A CNB2005100721190 A CN B2005100721190A CN 200510072119 A CN200510072119 A CN 200510072119A CN 100395305 C CN100395305 C CN 100395305C
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- surface active
- acid surface
- active agent
- acid
- oil well
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Abstract
The present invention relates to a technical method for utilizing acidic surface acting agents to remove blockage of an oil well, a formula of the acidic surface acting agents, and a method for preparing the acidic surface acting agents. The formula of the acidic surface acting agents is characterized in that the raw materials of the formula have the weight ratios of 10% to 40% of polyoxyethylene polyxypropylene propylene glycol ether, 10% to 45% of polyoxyethylene polyxypropylene phenol amine resin, 0.0001% to 0.035% of FC-N01 fluorocarbon surface acting agents, 0.0001% to 0.05% of FC-3B fluorocarbon surface acting agents, 3% to 10% of hydrochloric acid, 2% to 10% of nitric acid and 30% to 55% of water. The acidic surface acting agents are prepared according to the preparing technology. The blockage removing technology is characterized in that the surface acting agents with the acidity of 0.4% to 0.6% are prepared. The acidic surface acting agents are injected from a ring gap under the condition that the oil pumping of an oil well does not stop, and then, 10 to 20 m<3> of clear water is used for replacement. The present invention has favorable blockage removing effect and increases well yield, and the construction process does not influence oil production.
Description
Affiliated technical field
The present invention relates to a kind of acid surface active agent that utilizes, carry out the processing method and the acid surface active agent of de-plugging of well and fill a prescription and preparation method thereof.
Background technology
Along with the prolongation of oil well production time, oil well needs pump detection and workover.For carrying out smoothly of pump detection and workover safety and inspection pump work, must before pump detection and workover, use CaCL
2Or CaBr
2Aqueous solution kill-job or utilize the oilfield sewage kill-job.After kill operation caused part oil well inspection pump, output had reduction.This is because CaCL
2Or CaBr
2The aqueous solution or oilfield sewage have carried out secondary pollution to the stratum in the kill-job process, make the stratum take place that alkali is quick, the water-sensitive effect.Oil well output is restored, and the measure of adopting is that oil well is carried out acidizing treatment usually.But, expense of acidizing treatment very high (about about 250,000 yuan), the problem that in production practice, exists sandstone oil field part oil well acidation to lose efficacy.After the reason of output " unstability ", the technician begins to solve the de-plugging of well problem behind the analysis oil well pump detection and workover.
At present, in order to improve de-plugging of well efficient, improve, recover the oil well output after the kill-job, the technician has carried out a large amount of research work, has obtained the de-plugging of well effect.As Chinese patent publication number CN 1352350A, CN 1508213A, CN 1144255A, belong to de-plugging of well technology category.Particularly Chinese patent CN1352350A discloses a kind of composite deblocking process for oil layer.Its way is: one week of well-flushing at first; Just replacing organic unblocking agent to oil reservoir; Just squeezing hot water to oil reservoir, closing well 2 to 6 hours; Just squeezing inorganic unblocking agent; Just squeezing active water to oil reservoir, closing well 1 to 2 hour; The well-flushing acid discharge.Wherein, organic unblocking agent prescription: mix benzene 50%, mutual solvent 2%, emulsifying agent 1%; Inorganic unblocking agent prescription: main acid hydrochloric acid (concentration 15%) 30 to 60 sides.Its effect is: at first separate organic matter removal and stop up, and form stabilising system, make zero pour, wax precipitation piont reduce by 10 ℃; Utilize organic unblocking agent to remove organic obstruction again.This is a kind of method of oil layer unblocking, and receives plugging removal effect.But, need in the construction process to stop to recover the oil, could in oil well, squeeze blockages relieving fluid after the stopping production, delay well recovery production.
Summary of the invention
The objective of the invention is: a kind of acid surface active agent oil well leaking stoppage technology and prescription are provided, utilize acid surface active agent oil well leaking stoppage technology to solve the problem of oil well output " unstability ".
The technical scheme that the present invention is taked for its technical problem of solution is:
One, the raw material of acid surface active agent and prescription:
Raw material comprises:
1, polyoxyethylene polyoxypropylene propylene glycol (industrial goods);
2, polyoxyethylene polyoxypropylene phenol-amine resin (industrial goods);
3, FC-N01 fluorocarbon surfactant (industrial goods), its molecular formula is:
C
3F
7O (C
3F
6)
nC
2F
4CO
2C
2H
4N (C
2H
4OH)
2Wherein: n=2--4
4, FC-3B fluorocarbon surfactant (industrial goods) is a kind of C
20H
20F
13N
2O
4, C
17H
20F
17N
2O
3, C
16H
17F
17N
2O
4, C
12H
17F
11N
2O
2Mixture;
5, hydrochloric acid (industrial goods);
6, nitric acid (industrial goods);
7, water.
The formulation weight ratio:
1, polyoxyethylene polyoxypropylene propylene glycol: 10%-40%;
2, polyoxyethylene polyoxypropylene phenol-amine resin: 10%-45%;
3, FC-N01 fluorocarbon surfactant: 0.0001%-0.035%;
4, FC-3B fluorocarbon surfactant: 0.0001%-0.05%;
5, hydrochloric acid: 3-10%;
6, nitric acid: 2-10%;
7, water: 30-55%.
Major equipment:
Normal pressure enamel reaction still with stirring, heating, cooling and vacuum system.
Blending process:
At first, polyoxyethylene polyoxypropylene propylene glycol, polyoxyethylene polyoxypropylene phenol-amine resin, FC-N01 fluorocarbon surfactant, four kinds of raw materials of FC-3B fluorocarbon surfactant are added the normal pressure enamel reaction still in proportion.Slowly be warmed up to 90-95 ℃.The 20-30% that adds the entry usage quantity under constantly stirring continues to stir after 30 minutes, stops heating.Stir while cooling off, be cooled to normal temperature.Add hydrochloric acid and nitric acid in proportion, under constantly stirring, add remainder water.Stir discharging after 20 minutes, obtain acid surface active agent.In this acid surface active agent water soluble, the acid, readily biodegradable can have been given play to ultralow surface tension and interfacial tension under acidic conditions.
The acid surface active agent performance
| Project | Index |
| Outward appearance | White liquid |
| PH value | 4-5 |
| Zero pour ℃ | ≤-20℃ |
| 20 ℃ of relative densities | 0.96-1.1 |
| Interfacial tension mN/m | ≤30 |
Annotate: the interfacial tension evaluation is pressed GB/T 6541-86 standard and is carried out.
Two, acid surface active agent oil well leaking stoppage technology is a component on site construction method:
Acid surface active agent oil well leaking stoppage construction operation technology: acid surface active agent is added water, be mixed with the acid surface active liquid of 0.3%-1.0%.Under the situation of oil well without stop oil pumping, adopt pump truck that the acid surface active liquid of 0.3%-1.0% is injected from oil well casing and oil pipe annular space.Injection speed is 20-40m
3/ h, injection quantity is 30-80m
3Then, use 10-30m
3Clear water replaces acid surface activity liquid.Finish the acid surface active agent oil well leaking stoppage technology whole process.
The invention has the beneficial effects as follows: using acid surface active agent oil well leaking stoppage technology mainly is to have used acid surface active agent of the present invention.Acid surface active agent has after entering the stratum: (1), can prevent the rock surface wettability reversal, keep the original wettability in stratum; (2), has demulsification; (3), can eliminate clay lattice expands; (4), remove the organism (as paraffin, pitch, colloid etc.) on formation rock surface.So acid surface active agent of the present invention has special de-plugging of well function.It is clamp-oned in the oil well that needs de-plugging, can play plugging removal effect well, for oil well improves output, the problem that solves oil well output " unstability " provides a kind of treatment agent.In addition, the beneficial effect of construction technology of the present invention is: construction process does not need to bump off a well, and in normal oil pumping operation, injects acid surface active agent in oil well.So neither influence is recovered the oil and is produced, and finishes de-plugging of well simultaneously, is independent of each other.De-plugging process of the present invention has been broken the traditional method that de-plugging operation in the past must stop production.
Embodiment
Embodiment: utilize the present invention in Duo Koujing, to use, all receive tangible oil increasing effect.With Zhao57-35Jing is that example describes.Zhao57-35Jing has polluted oil well.Be this well preparation 60m
3, concentration is 0.5% acid surface active liquid.
The acid surface active agent prescription is: polyoxyethylene polyoxypropylene propylene glycol: 19.8%; Polyoxyethylene polyoxypropylene phenol-amine resin: 22.4%; FC-N01 fluorocarbon surfactant: 0.035%; FC-3B fluorocarbon surfactant: 0.05%; Hydrochloric acid: 4.3%; Nitric acid: 2.7%; Water: 50.715%.
Process for preparation: at first, with polyoxyethylene polyoxypropylene propylene glycol, polyoxyethylene polyoxypropylene phenol-amine resin, FC-N01 fluorocarbon surfactant, four kinds of raw materials of FC-3B fluorocarbon surfactant according to the above ratio, add in the normal pressure enamel reaction still of 2000L with stirring, heating, cooling and vacuum system.Slowly be warmed up to 95 ℃.Add 30% of entry usage quantity under constantly stirring, continuously stirring stopped heating after 30 minutes.Stir while cooling off, be cooled to normal temperature.Add hydrochloric acid and nitric acid in proportion, under constantly stirring, add remainder water.Stir discharging after 20 minutes, obtain acid surface active agent.
Construction process: in the de-plugging working-yard, add water, be mixed with acid surface active liquid 60m with 0.5% with the acid surface active agent for preparing
3Under the situation that oil well without stop is taken out, adopting a pump truck is that 0.5% acid surface active liquid injects from the annular space between oil well casing and the oil pipe with concentration, and injection speed is 30m
3/ h.After the injection, use 20m
3Clear water replaces.
Zhao57-35Jing, not before the pump detection and workover, day production fluid 11.8m
3/ d, daily output crude oil 10m
3/ d, working fluid level 1566m.Behind the pump detection and workover, day production fluid 3.6m
3/ d, day produce oil 2.8m
3/ d, working fluid level 1678m; On August 23rd, 2004 adopted the big discharge capacity of acid surface active agent of construction technology of the present invention and 0.5% to inject 60m from the cover annular space under the situation that oil well without stop is taken out
3After the de-plugging construction, day production fluid 10.5m
3/ d, day produce oil 8.1m
3/ d, working fluid level 1522m has obtained effect preferably.Equipment used: one 400 type pump truck, two 10m
3Tank car.Executive cost: about 3000 yuan of vehicle fees, tensio-active agent take about 4000 yuan, add up to 7000 yuan.Than the conventional a large amount of operating costs of acidizing treatment saving.
Claims (4)
1. acid surface active agent oil well leaking stoppage construction technology, be applied to de-plugging of well, it is characterized in that: acid surface active agent is added water, be mixed with the acid surface active liquid of 0.3%-1.0%, under the situation of oil well without stop oil pumping, adopt pump truck that the acid surface active liquid of 0.3%-1.0% is injected from oil well casing and oil pipe annular space, injection speed is 20-40m
3/ h, injection quantity is 30-80m
3, then, use 10-30m
3Clear water replaces acid surface activity liquid; Described acid surface active agent each component weight ratio is polyoxyethylene polyoxypropylene propylene glycol: 10%-40%; Polyoxyethylene polyoxypropylene phenol-amine resin: 10%-45%; FC-N01 fluorocarbon surfactant: 0.0001%-0.035%; FC-3B fluorocarbon surfactant: 0.0001%-0.05%; Hydrochloric acid: 3-10%; Nitric acid: 2-10%; Water: 30-55%.
2. acid surface active agent oil well leaking stoppage technology as claimed in claim 1, it is characterized in that: acid surface active agent is added water, be mixed with 0.5% acid surface active liquid, under the situation of oil well without stop oil pumping, the employing pump truck injects 0.5% acid surface active liquid from oil well casing and oil pipe annular space, injection speed is 30m
3/ h, injection quantity is 60m
3, then, use 20m
3Clear water replaces acid surface activity liquid.
3. acid surface active agent de-plugging construction technology as claimed in claim 1 or 2 is characterized in that: described acid surface active agent each component weight ratio is polyoxyethylene polyoxypropylene propylene glycol: 19.8%; Polyoxyethylene polyoxypropylene phenol-amine resin: 22.4%; FC-N01 fluorocarbon surfactant: 0.035%; FC-3B fluorocarbon surfactant: 0.05%; Hydrochloric acid: 4.3%; Nitric acid: 2.7%; Water: 50.715%.
4. acid surface active agent de-plugging construction technology as claimed in claim 1 or 2, it is characterized in that: the preparation method of acid surface active agent is, polyoxyethylene polyoxypropylene propylene glycol, polyoxyethylene polyoxypropylene phenol-amine resin, FC-N01 fluorocarbon surfactant, FC-3B fluorocarbon surfactant are added the normal pressure enamel reaction still, slowly be warmed up to 90-95 ℃, stir and add the 20-30% of entry usage quantity, stir after 30 minutes, stop heating, cooling and stirring is to normal temperature, add hydrochloric acid and nitric acid, stir the adding remainder water, stir discharging after 20 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100721190A CN100395305C (en) | 2005-05-25 | 2005-05-25 | Acid surface active agent oil well leaking stoppage technology and its formula |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100721190A CN100395305C (en) | 2005-05-25 | 2005-05-25 | Acid surface active agent oil well leaking stoppage technology and its formula |
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|---|---|
| CN1869148A CN1869148A (en) | 2006-11-29 |
| CN100395305C true CN100395305C (en) | 2008-06-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101691839B (en) * | 2009-09-30 | 2013-06-26 | 陕西中孚石油技术有限责任公司 | Ultra-low resistance acid-type microemulsion plugging removal and stimulation technology for low permeability oil well |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101100614B (en) * | 2007-07-31 | 2010-07-28 | 中国石油天然气股份有限公司 | Low-temperature demulsifying agent used for olefin-base crude oil dehydration and preparation method thereof |
| CN102877820A (en) * | 2011-07-15 | 2013-01-16 | 中国石油天然气股份有限公司 | Method for reducing water injection pressure of reservoir well |
| CN105860948A (en) * | 2015-05-25 | 2016-08-17 | 成都能生材科技开发有限责任公司 | Preparation method of polymer viscosity-reducing profile-control resistance-reducing physical dissolution agent PSR |
| CN105062551B (en) * | 2015-09-16 | 2017-03-22 | 天津亿利科能源科技发展股份有限公司 | Demulsifying agent for treating sand-containing crude oil |
| CN109705832B (en) * | 2019-01-29 | 2021-09-10 | 中国海洋石油集团有限公司 | High-temperature anti-emulsion synergist and preparation and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1352350A (en) * | 2000-11-03 | 2002-06-05 | 中油辽河油田公司沈阳采油厂 | Composite deblocking process for oil layer |
| CN1508213A (en) * | 2002-12-13 | 2004-06-30 | 冀东石油勘探开发公司 | Washing and deblocking agent for oil well |
-
2005
- 2005-05-25 CN CNB2005100721190A patent/CN100395305C/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1352350A (en) * | 2000-11-03 | 2002-06-05 | 中油辽河油田公司沈阳采油厂 | Composite deblocking process for oil layer |
| CN1508213A (en) * | 2002-12-13 | 2004-06-30 | 冀东石油勘探开发公司 | Washing and deblocking agent for oil well |
Non-Patent Citations (4)
| Title |
|---|
| 复配型原油破乳剂的研制与工业应用. 吴宇峰等.精细石油化工. 2004 |
| 复配型原油破乳剂的研制与工业应用. 吴宇峰等.精细石油化工. 2004 * |
| 表面活性剂在油田中的应用及其作用原理. 李干佐等.精细石油化工进展，第5卷第2期. 2004 |
| 表面活性剂在油田中的应用及其作用原理. 李干佐等.精细石油化工进展，第5卷第2期. 2004 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101691839B (en) * | 2009-09-30 | 2013-06-26 | 陕西中孚石油技术有限责任公司 | Ultra-low resistance acid-type microemulsion plugging removal and stimulation technology for low permeability oil well |
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| Publication number | Publication date |
|---|---|
| CN1869148A (en) | 2006-11-29 |
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