CN102796501A - Ternary composite chain scission solution - Google Patents
Ternary composite chain scission solution Download PDFInfo
- Publication number
- CN102796501A CN102796501A CN2012102907404A CN201210290740A CN102796501A CN 102796501 A CN102796501 A CN 102796501A CN 2012102907404 A CN2012102907404 A CN 2012102907404A CN 201210290740 A CN201210290740 A CN 201210290740A CN 102796501 A CN102796501 A CN 102796501A
- Authority
- CN
- China
- Prior art keywords
- chain scission
- ternary
- solution
- ternary composite
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
Belonging to fine chemical solutions, the invention relates to a ternary composite chain scission solution used for ternary composite flooding chain scission and unblocking as well as enhancement of crude oil recovery. According to a formula, the chain scission solution comprises by weight: 8%-10% of sodium lauryl sulfate, 3.5%-4% of potassium persulfate, 7%-8% of sodium dichromate, 9%-10% of an imidazoline inhibitor, 10%-12% of sodium hydroxide, 8%-10% of a ferric ion stabilizer, and the balance water. Compared with current common acidification, surfactants and other chemical blockage removal technologies, the chain scission solution not only can effectively improve the chain scission and unblocking effects, maintain a long unblocked time, enhance crude oil recovery, but also is a novel environment-friendly product with a pH value of 8 and without irritating smell and corrosion.
Description
The compound chain rupture of a kind of ternary
Liquid
Technical field
The fine chemicals system of the invention belongs to liquid particularly is used for ternary compound oil drive decompression augmented injection, improves the compound chain rupture liquid of a kind of ternary of oil recovery factor.
Background technology
The oil field is in the Development and Production process, and each item technological processs such as drilling well, oil-gas mining have all adopted a large amount of chemical, mainly contains mineral substance, organism, inorganics, macromolecular material etc.Along with the continuous increase that chemical and ternary composite driving inject, because many factor affecting in oil bearing formation property and the performance history, obstruction in various degree can appear in nearly well hydrocarbon zone and oily discharge orifice road.The deposition of the generation of a large amount of bacteriums in stratum, combination flooding superpolymer causes pit shaft and stratum infiltration pore to stop up, and makes to inject the rising of well liquid filling pressure; IR descends, and has caused to be difficult to inject, in order to open the injection channel; Remove to stop up and realize that augmented injection increases the purpose of oil; Usually need effectively remove producing the settling and the compound jelly that stop up, just can make oily discharge orifice road unimpeded, to improve the output of oil and Sweet natural gas.
Situation variation is year by year totally injected along with the increase of ternary composite driving accumulative total IR in general oil field, and the injection pressure that quite a few well arranged near or reach the parting pressure of oil reservoir.Because injection pressure raises, cause the compelled downward modulation of injection speed, had a strong impact on the combination flooding development effectiveness.In recent years for addressing the above problem; Common waterfrac treatment and acidification to dispel block measure have been promoted at the scene; Though alleviate the contradiction that the oil-displacing agent notes are not entered and injection pressure rises to a certain extent, the augmented injection amount is low, antihypertensive effect is poor, validity period is short, corrodibility is destroyed stratum original structure isostatic problem by force but still exist.
Summary of the invention
Technical problem to be solved by this invention is to the deficiency in the chemical plugging removal technology such as existing common acidifying technology, provides a kind of ternary compound chain rupture liquid; It can not only effectively improve decompression augmented injection effect, keeps the unimpeded time long, improves oil recovery factor; And be that pH value is 8; Non-stimulated smell does not have corrosion, can not injure the novel environment friendly product on stratum.
To achieve these goals, the present invention adopts following technical scheme:
The compound chain rupture liquid of a kind of ternary, be made up of following components in weight percentage: sodium lauryl sulphate: 8%--10%, Potassium Persulphate: 3.5%--4%, sodium dichromate 99: 7%--8%, imidazoline inhibitor: 9%--10%, sodium hydroxide 10%--12%, Fe stabilizer: 8%--10%, all the other are water.
The mechanism of the compound chain rupture liquid of a kind of ternary of the present invention is following:
The compound chain rupture liquid of ternary is by the sodium lauryl sulphate with functions such as tensio-active agent, enhancing IT, expansion injuction increasing liquid sweep efficiencys; The Potassium Persulphate of mineral compound, ternary composite driving DeR initiator function; Catalyzer, promotion improve the sodium dichromate 99 of chemical reaction rate; Regenerated imidazoline inhibitor after corrosion mitigation speed, the de-plugging of prevention inorganic scale; Promotor reduce calcium, mg ion in the water concentration, reduce the sodium hydroxide of incrustation scale rate of formation, effectively complexing free iron ion, prevent that ferric hydroxide precipitate from causing the Fe stabilizer of reservoir choke injury function, multiple one-tenth such as water is grouped into.The chemical conversion reaction takes place in the combination flooding viscose glue group frozen glue body that the slaking that it drives ternary is bad etc.; Promptly break off the carboxamido-group of combination flooding viscose glue group or the big branched structure of carboxyl layer by layer; Degradation and Transformation becomes little side chain, reaction constantly continue make the tamper Degradation and Transformation become small molecules and colloidal dispersion little solution that coagulates, break away from mutual viscosity with rock surface; After being decomposed into watery solution through 15 hours chain ruptures, can be taken away in the lump with extraction liquid smoothly.Thereby immediate vicinity of wellbore pervious course and fluid injection duct have been dredged, to reach comprehensive step-down augmented injection effect.The anti-ternary viscous gel group degraded test repeatedly of discharging of ternary composite driving chain rupture liquid of the present invention and injection well; Destroy its carboxamido-group structure when making decompression injuction increasing liquid contact micelle rapidly; Peel off long-chain base viscose glue group layer by layer, break its toughness, be easy to discharge until being degraded to watery solution; Thoroughly realizing the purpose of decompression augmented injection, also is to follow the principle that the chemical reaction reduction is cleared up.The present invention has combined new composite to separate thick technology in addition; This technological augmented injection mechanism is that itself and hydrophilic sandstone surface produce physics covering effect, and the wettability that changes sandstone surface reduces its easy tack, improves water phase permeability; Thereby reduce the resistance to flow of injecting liquid, play step-down augmented injection effect.
The compound chain rupture liquid of a kind of ternary of the present invention, process are to producing the test of stopping up the ternary composite driving well; Proof step-down rate reaches 99.8%; To compare effect remarkable with other decompression augmented injection product; Degrade fully after not only producing chemical reaction, and keep the unimpeded time long, be prone to contact with other material of oil reservoir to the micelle that do not flow that oil reservoir and pit shaft produced.The even chain-scission degradation of adaptation level section, oil-sand separate can not cause other formation damage, environmental protection, energy-conservation, safe, easy and simple to handle soon.Become neutral behind this blockages relieving fluid and the polymer liquid precursor reactant, pH value is 8, and is tasteless, do not have corrosion, is safran liquid.
For the compound chain rupture liquid of the ternary of verifying result of use; According to problem such as stopping up again because of the absorption again of the sticking group of combination flooding after the composition analysis of injection well immediate vicinity of wellbore tamper and the injection well de-plugging; We have carried out research trial repeatedly, and table 1 is the experiment situation of simulated field:
Table 1: test in place record
In the table 1: experiment I adopts ternary to drive injection liquid; Experiment II adopts ternary to drive microgel liquid; The ternary that experiment III adopts the down-hole to return row is driven compound micelle.All reached identical decompression augmented injection effect.
The simulation test repeatedly that reached 2 years through the contriver; The compound chain rupture liquid formula of ternary of research both can be degraded to crosslinked polymer thing the efficient oxidation; Can dissolve fully organic matter, clay and mechanical impurity again, stratum, oil reservoir matrix permeability are obviously improved.Laboratory simulationt test proves that this block releasing technique flexibility is strong, and success ratio is high, is the compound chain rupture of a kind of effective ternary, and decompression augmented injection new technology also is the substitute products that surmount acidifying in the past and various chemical decompression increase water injection technologies.
After ternary composite driving chain rupture liquid of the present invention dilutes at normal temperatures and stirs; Specify oil reservoir with sending into the shaft bottom behind the high pressure pump truck connection oil pipe of being furnished with high-low pressure medical liquid spraying head; Usage ratio is 1:15; Like available 1 ton of blockages relieving fluid 15 tons of combination flooding solution that go to degrade, can reach the purpose of the logical resistance of chain rupture in 4 hours, effective unobstructed oily discharge orifice road improves oil recovery factor fast.
Embodiment:With specific embodiment the present invention is further specified below:
Embodiment 1: the compound chain rupture liquid formula of the ternary of employing is following
Form by following components in weight percentage: sodium lauryl sulphate: Potassium Persulphate 8%: sodium dichromate 99 2%: imidazoline inhibitor 8.5%: 10%, sodium hydroxide 11%, Fe stabilizer 8%, water 52.5%.
The medicament of above-mentioned each component and water are technological at normal temperatures to stir and can use after miscible.The result of use of this example prescription in oil and water well is with reference to following table
The result of use of table 2. embodiment 1:
Visible from above each table, before and after de-plugging, every mouthful of well in operation shows that pressure, water yield index have fairly obvious difference, and proving after this prescription chain rupture de-plugging has good decompression augmented injection effect.
Embodiment 1: the compound chain rupture liquid formula of the ternary of employing is following: be made up of following components in weight percentage: sodium lauryl sulphate: Potassium Persulphate 8%: sodium dichromate 99 3.5%: imidazoline inhibitor 8.5%: 10%, sodium hydroxide 11%, Fe stabilizer 8%, water 51%.The medicament of above-mentioned each component and water are technological at normal temperatures to stir and can use after miscible.
The oil field is in the Development and Production process at present; Along with chemical and the continuous increase of ternary composite driving injection, the continuous increase and the reservoir choke situation of old well stopping state constantly worsen; The demand of blockages relieving fluid is also in cumulative year after year; Not still environmental protection of the compound chain rupture liquid of ternary of the present invention, energy-conservation, safe, easy and simple to handle, the preferred product of the following ternary composite driving de-plugging industry that de-plugging efficient especially is high, result of use is good.
Claims (1)
1. compound chain rupture liquid of ternary; It is characterized in that being made up of following components in weight percentage: sodium lauryl sulphate: 8%--10%, Potassium Persulphate: 3.5%--4%, sodium dichromate 99: 7%--8%, imidazoline inhibitor: 9%--10%, sodium hydroxide: 10%--12%, Fe stabilizer: 8%--10%, all the other are water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102907404A CN102796501A (en) | 2012-08-16 | 2012-08-16 | Ternary composite chain scission solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102907404A CN102796501A (en) | 2012-08-16 | 2012-08-16 | Ternary composite chain scission solution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102796501A true CN102796501A (en) | 2012-11-28 |
Family
ID=47195815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102907404A Pending CN102796501A (en) | 2012-08-16 | 2012-08-16 | Ternary composite chain scission solution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102796501A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103666424A (en) * | 2013-12-04 | 2014-03-26 | 天津大港油田滨港集团博弘石油化工有限公司 | Polymer degradation agent |
| CN106167696A (en) * | 2016-07-22 | 2016-11-30 | 大庆东宽久久科技有限公司 | The de-plugging of a kind of poly-district increases adopts liquid |
| CN106281277A (en) * | 2016-07-22 | 2017-01-04 | 大庆东宽久久科技有限公司 | A kind of de-plugging scale removal increases adopts liquid |
| CN106634915A (en) * | 2016-12-30 | 2017-05-10 | 西南石油大学 | Thickened oil well polymer plugging remover |
| CN111286317A (en) * | 2020-03-20 | 2020-06-16 | 东北大学 | Polyacrylamide/chromium gel normal-temperature static gel breaker and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008134332A1 (en) * | 2007-04-25 | 2008-11-06 | Baker Hughes Incorporated | In situ microemulsions used as spacer fluids |
| CN102061154A (en) * | 2010-12-21 | 2011-05-18 | 大庆百晟石油科技有限公司 | Nano high-efficiency composite blockage removing liquid |
-
2012
- 2012-08-16 CN CN2012102907404A patent/CN102796501A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008134332A1 (en) * | 2007-04-25 | 2008-11-06 | Baker Hughes Incorporated | In situ microemulsions used as spacer fluids |
| CN102061154A (en) * | 2010-12-21 | 2011-05-18 | 大庆百晟石油科技有限公司 | Nano high-efficiency composite blockage removing liquid |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103666424A (en) * | 2013-12-04 | 2014-03-26 | 天津大港油田滨港集团博弘石油化工有限公司 | Polymer degradation agent |
| CN103666424B (en) * | 2013-12-04 | 2016-01-13 | 天津大港油田滨港集团博弘石油化工有限公司 | A kind of polymer-degrading agents |
| CN106167696A (en) * | 2016-07-22 | 2016-11-30 | 大庆东宽久久科技有限公司 | The de-plugging of a kind of poly-district increases adopts liquid |
| CN106281277A (en) * | 2016-07-22 | 2017-01-04 | 大庆东宽久久科技有限公司 | A kind of de-plugging scale removal increases adopts liquid |
| CN106634915A (en) * | 2016-12-30 | 2017-05-10 | 西南石油大学 | Thickened oil well polymer plugging remover |
| CN111286317A (en) * | 2020-03-20 | 2020-06-16 | 东北大学 | Polyacrylamide/chromium gel normal-temperature static gel breaker and preparation method thereof |
| CN111286317B (en) * | 2020-03-20 | 2021-08-31 | 东北大学 | Polyacrylamide/chromium gel normal-temperature static gel breaker and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Fink | Petroleum engineer's guide to oil field chemicals and fluids | |
| CN102796501A (en) | Ternary composite chain scission solution | |
| CN103275691B (en) | The slippery water fracturing liquid that a kind of shale oil gas reservoir can reuse | |
| CN101608113A (en) | A kind of prescription that utilizes the biological enzyme formulation preparing fracturing fluid | |
| CN104293333A (en) | Neutral blocking remover composition for oilfield oil extraction and preparation method thereof | |
| CN104498008B (en) | A kind of biological profile-controlling and plugging agent of oilfield exploitation high temperature resistant | |
| CN101323780A (en) | Low pervasion oilfield thermochemical cleanup additive and use thereof | |
| CN104194759A (en) | Neutral blockage removing agent composition used for oil recovery formation in oilfield and preparation method thereof | |
| CN101333922A (en) | Fracturing process for removing breakdown fluid contamination | |
| CN102391851A (en) | Acid carboxymethyl guargum fracturing fluid and preparation method thereof | |
| CN103881673B (en) | A kind of injection well oxidation gel breaker and preparation method thereof | |
| CN104879113A (en) | Compound acid fracturing method for carbonate reservoir | |
| CN100549126C (en) | Preposition acid solution and preposition sour sandfrac method | |
| CN102061154B (en) | Nano high-efficiency composite blockage removing liquid | |
| CN103184037A (en) | Bio-enzyme solid-free completion fluid | |
| CN104312570A (en) | Low-corrosion chemical themogenic pressurizing gel breaker and preparation method thereof | |
| CN103773335A (en) | Plugging agent capable of being solidified through acidification | |
| Hazra et al. | Performance of friction reducers in iron-rich environments | |
| CN1995269A (en) | Chemical formula and process for removing organic block adjacent to oil well area | |
| CN1055329C (en) | Single liquid method combined with two liquid method for water sealing in borehole | |
| CN113403055B (en) | Water-soluble polymer degradation agent and preparation and application thereof | |
| CN105713594A (en) | Viscous acid and preparation method thereof | |
| Cheng et al. | Development of a high-strength and adhesive polyacrylamide gel for well plugging | |
| Zou et al. | A novel self-degradable gel (SDG) as liquid temporary plugging agent for high-temperature reservoirs | |
| CN106958438A (en) | A kind of polymer flooding blocks the method for removing blockage of well |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121128 |