CN102559157B - Environmentally-friendly high-temperature-resistant synthetic base foam drilling fluid and preparation method thereof - Google Patents
Environmentally-friendly high-temperature-resistant synthetic base foam drilling fluid and preparation method thereof Download PDFInfo
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- CN102559157B CN102559157B CN201110407297.XA CN201110407297A CN102559157B CN 102559157 B CN102559157 B CN 102559157B CN 201110407297 A CN201110407297 A CN 201110407297A CN 102559157 B CN102559157 B CN 102559157B
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Abstract
The invention discloses environmentally-friendly high-temperature-resistant synthetic base foam drilling fluid and a preparation method thereof. The drilling fluid comprises the following components in parts by weight: 1-3 parts of organic soil, 1-2 parts of high-temperature oil-based foaming agent, 1-3 parts of self-made high-temperature oil-based foam stabilizer and 92-97 parts of synthetic base liquid namely alpha-olefin. The dispersion medium of the synthetic base foam drilling fluid is foam liquid using alpha-olefin as the main component, the dispersed phase is air, and the drilling fluid is prepared through high-speed stirring. The drilling liquid system has stable performance, good heat resistance and antipollution capability and good compatibility to the reservoir; and the drilling fluid can be used in deep well underbalanced drilling and can be used to effectively inhibit the hydration and expansion of the shale, stabilize the well wall, prevent well leakage and protect the oil and gas formation. In addition, the synthetic base liquid namely alpha-olefin and the foaming agent are both non-toxic, are biodegradable and have no harmful effect on the environment.
Description
Technical field
The present invention relates to drilling technique field, particularly a kind of environment-friendly type high-temperature-resistant synthetic base foam drilling fluid and preparation method thereof.
Background technology
Along with the increase day by day of hydrocarbon resources demand, coal-seam gas, shale gas and ultra low pressure formations and middle and later periods, old oil-gas field also became the important goal of exploration and development, and development low density drilling fluid is very necessary.Main low density drilling fluid is vaporific liquid and water-based foam at present, adopts low density drilling fluid can effectively reduce filter loss, reduce pressure differential sticking accident, prevent leakage, improve rate of penetration, reduces to greatest extent the infringement of drilling fluid to oil and gas reservoir.The liquid phase of water-based foam drilling fluid generally adopts fresh water or salt solution, and gas phase is generally air, nitrogen, Sweet natural gas or waste gas.Foam drilling fluid is at suspension landwaste and control aspect reservoir pressure and be obviously better than vaporific drilling fluid, and foam drilling fluid also has natural leak-off and leakproof, the leak stopping characteristic of falling, and reduces or stops fluid to infiltrate stratum by improving viscosity and Jia Min blockage effect.
Although the application aspect control leak-off, reduction pressure differential sticking, leak-proof leak-stopping of water-based foam drilling fluid is very extensive; but still can not effectively solve the formation damage problem while creeping into water-sensitive formation; carry out the research of oil-based foam fluid for this reason, significant to problems such as shale hydration, reservoir protections in effective solution drilling process.
At present, at the early-stage for the research of oil-based foam drilling fluid both at home and abroad, and obtain some progress, still exist generally the problems such as foam system is unstable, heat-resisting property is poor, contamination resistance is weak, foam base fluid used mostly is the diesel oil that toxicity is larger in addition, in environment, be not easy biological degradation, cause environmental pollution.Therefore, utilize the nontoxic base fluid (being called for short synthetic base) of the similar oils of synthetic to replace the oil phase in oil-based foam, research and develop a kind of environment-friendly type high temperature resistance oil-based foam drilling fluid, there is extremely important realistic meaning for being in the become estranged exploratory development of oil and gas reservoir of hole instability of environmental requirement strict regional low pressure, hyposmosis, leakiness.
Summary of the invention
The main object of the present invention is to address the above problem; a kind of environment-friendly type high-temperature-resistant synthetic base foam drilling fluid system is provided; this drilling fluid system asepsis environment-protecting; stable performance, heat-resisting property are good; can be used for deep-well underbalance creeps into; creep into and use synthetic base foam drilling fluid can effectively suppress shale hydration expansion, stabilizing borehole, leak-proof leak-stopping, can effectively protect oil and gas reservoir simultaneously.
Technical solution of the present invention is as follows:
A kind of environment-friendly type high-temperature-resistant synthetic base foam drilling fluid, adopt the organophilic clay of 1～3 part of mass fraction, the high temperature oil base whipping agent of 1～2 part, the high temperature oil base suds-stabilizing agent of 1～3 part, the synthetic base fluid of 92～97 parts, disperse phase is gas, formulated by high-speed stirring.
Described gas can be arbitrary or its any mixture in air, Sweet natural gas, nitrogen.
Described high temperature oil base whipping agent is alkylsulphonic acid RSO
3h, wherein R is C
18～C
24alkyl or thiazolinyl.
Described high temperature oil base suds-stabilizing agent is oil-soluble copolymer polyhydric aliphatic acid alkylolamide ether.
Described synthetic base fluid is arbitrary or its any mixture in alpha-olefin, whiteruss, synthetic ester, low toxicity mineral oil (as white oil), vegetables oil; Described alpha-olefin, contain the hydro carbons containing at least 12 carbon atoms at least about 90% (quality), be greater than the hydro carbons of 10% (quality) containing at least 16 carbon atoms, at least about 60% (quality) isoparaffin, at least about the total alkane of 95% (quality), approximately 1% (quality) naphthenic hydrocarbon at the most, is less than 0.1% (quality) aromatic hydrocarbons.
Described high temperature suds-stabilizing agent preparation method comprises the following steps:
1) use polyhydric aliphatic acid under the effect of acid catalyst, react with methyl alcohol, obtain polyhydric aliphatic acid methyl esters; Described catalyzer can adopt various an acidic catalysts, can be the liquid acid under reaction conditions, can be also solid acid, can be mineral acid or organic acid, comprises sulfuric acid, oxalic acid, Phenylsulfonic acid, can be also super acids.Catalyzer add-on 0.2%～0.8% (with lipid acid amount foundation), temperature of reaction is 80～100 ℃, reaction mol ratio (methyl alcohol/lipid acid) is 3～8, reaction times 1～3h.
2) polyhydric aliphatic acid methyl esters reacts with diethanolamine, obtains polyhydric aliphatic acid alkylolamide; Described catalyzer can adopt various basic catalysts, comprises homogeneous catalyst and heterogeneous catalyst, comprises sodium hydroxide, potassium hydroxide etc.Catalyzer add-on 0.2%～1.0% (with fatty acid methyl ester amount foundation), temperature of reaction is 80～120 ℃, reaction mol ratio 1.05～1.10 (diethanolamine/fatty acid methyl ester).Thinner can adopt various organic solvents, comprises various alkylbenzenes (as toluene, dimethylbenzene) and various oil product (as diesel oil, paraffin etc.).
3), under catalyst action, obtain polyhydric aliphatic acid alkylolamide ether by polyhydric aliphatic acid alkylolamide and reacting ethylene oxide; Described catalyzer can be basic catalyst, also can utilize remaining alkali as a catalyst in back reaction, and temperature of reaction is 60～180 ℃, and reaction mol ratio (oxyethane/polyhydric aliphatic acid alkylolamide) is 2～4.
Effect of the present invention: the excellent property of synthetic base whipping agent, in the synthetic base fluid of 100mL, add 0.5% whipping agent, foam volume can reach 500mL, adds after suds-stabilizing agent more than the transformation period can reach 15min; The density of synthetic base foam drilling fluid is at 0.10～0.40g/cm
3, the temperature resistance ability of drilling fluid is greater than 160 ℃, and the stable system time is greater than 15min, there will not be gas-liquid separation phenomenon in circulation of drilling fluid, and in whole working cycle, protection low pressure reservoir effect is better.
This drilling fluid system stable performance, has good heatproof and contamination resistance, good with reservoir compatibleness; Can be used for deep-well underbalance and creep into, can effectively suppress shale hydration and expand, stabilizing borehole, prevents leakage, protection hydrocarbon zone.It is in addition, synthetic that base fluid---alpha-olefin and foaming agent are all nontoxic, biodegradable, and environment is had no adverse effects.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.
Embodiment 1:
The preparation process of high temperature oil base suds-stabilizing agent (oil-soluble polymers polyhydric aliphatic acid alkylolamide ether), specifically comprises:
(1) in the glass reactor of 500mL, add successively diprotic acid 200g (M=260), anhydrous methanol 80g, vitriol oil 1g, under agitation condition, be slowly warmed up to 85～90 ℃, constant temperature 0.5h, then in reactor, add anhydrous methanol 70g, constant temperature 1h, is warmed up to 100 ℃, constant temperature 20min, cool to 50 ℃, discharging.Reaction product is washed with water to pH value to neutrality, obtain polyhydric aliphatic acid methyl esters;
(2) the polyhydric aliphatic acid methyl esters 100g (1) being made adds previous reaction device, and vacuum hydro-extraction, then adds diesel oil 100g, diethanolamine 38g, NaOH 0.8g, is warmed up to 120 ℃, reaction 4h, cooling discharge, obtains polyhydric aliphatic acid alkylolamide;
(3) the polyhydric aliphatic acid alkylolamide making in (2) is added to high-pressure reactor, 160 ℃ pass into oxyethane, obtain polyhydric aliphatic acid alkylolamide ether.
Embodiment 2:
(1) take 92g alpha-olefin in 100mL beaker, add the synthetic polyhydric aliphatic acid alkylolamide ether stirring and dissolving of 3g embodiment 1, then under whipped state, add 3g organophilic clay (), after organophilic clay is uniformly dispersed, add again 2g octadecyl sulfonic acid, stirring and dissolving gently;
(2) above-mentioned foam solution is transferred in high speed agitator, is synthetic base foam drilling fluid with the rotating speed high-speed stirring foam base fluid 1min of 12000r/min.
Embodiment 3:
(1) take 95g alpha-olefin in 100mL beaker, add the synthetic polyhydric aliphatic acid alkylolamide ether stirring and dissolving of 2g embodiment 1, then under whipped state, add 2g organophilic clay, after organophilic clay is uniformly dispersed, add again 1.5g eicosyl sulfonic acid, stirring and dissolving gently;
(2) above-mentioned foam solution is transferred in high speed agitator, is synthetic base foam drilling fluid with the rotating speed high-speed stirring foam base fluid 1min of 12000r/min.
Embodiment 4:
(1) take 97g alpha-olefin in 100mL beaker, add the synthetic polyhydric aliphatic acid alkylolamide ether stirring and dissolving of 1g embodiment 1, then under whipped state, add 1g organophilic clay, after organophilic clay is uniformly dispersed, add again 1g docosyl sulfonic acid, stirring and dissolving gently;
(2) above-mentioned foam solution is transferred in high speed agitator, is synthetic base foam drilling fluid with the rotating speed high-speed stirring foam base fluid 1min of 12000r/min.
Performance evaluation: the synthetic base foam solution of preparing according to above-described embodiment method, pack in the aging still of roller heating stove, high temperature dynamic aging 16h under 160 ℃ of temperature condition, takes out and is cooled to room temperature.The each 100mL of synthetic base foam solution that gets aging front and back adds in jar, with 12000r/min rotating speed high-speed stirring 1min, measures its density and rheological parameter under room temperature.
The performance index of this synthetic base foam drilling fluid are as shown in table 1:
Table 1
Embodiment 5
The drilling well implementing process of the synthetic base foam solution of application the present invention:
Step 11, first in boring, inject described synthetic base foam drilling fluid, the mud in boring is replaced;
Step 12, continue will synthesize base foam drilling fluid injection hole, the synthetic base foam drilling fluid from the interior discharge of holing is stirred, refill in boring.
In drilling process, for reaching the object of stable foam, should keep the effective content of system whipping agent and suds-stabilizing agent, when often creeping into 50m or boring, reach after 12h, in system, supplement whipping agent and suds-stabilizing agent, maintenance system performance.In concrete construction process, utilize high-power mixer to stir, keep system stable performance.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (4)
1. an environment-friendly type high-temperature-resistant synthetic base foam drilling fluid, it is characterized in that: adopt the organophilic clay of 1～3 part of mass fraction, the high temperature oil base whipping agent of 1～2 part, the high temperature oil base suds-stabilizing agent of 1～3 part, the synthetic base fluid of 92～97 parts, disperse phase is gas, formulated by high-speed stirring; Described synthetic base fluid is arbitrary or its any mixture in alpha-olefin, whiteruss, synthetic ester, low toxicity mineral oil, vegetables oil; Described high temperature oil base suds-stabilizing agent is oil-soluble copolymer polyhydric aliphatic acid alkylolamide ether, and preparation method comprises the following steps:
1) use polyhydric aliphatic acid under the effect of acid catalyst, react with methyl alcohol, obtain polyhydric aliphatic acid methyl esters;
2) polyhydric aliphatic acid methyl esters reacts with diethanolamine, obtains polyhydric aliphatic acid alkylolamide;
3), under catalyst action, obtain polyhydric aliphatic acid alkylolamide ether by polyhydric aliphatic acid alkylolamide and reacting ethylene oxide.
2. environment-friendly type high-temperature-resistant synthetic base foam drilling fluid according to claim 1, is characterized in that: described high temperature oil base whipping agent is alkylsulphonic acid RSO
3h, wherein R is C
18～C
24alkyl or thiazolinyl.
3. environment-friendly type high-temperature-resistant synthetic base foam drilling fluid according to claim 1, is characterized in that: described gas can be arbitrary or its any mixture in air, Sweet natural gas, nitrogen.
4. according to the preparation method of the arbitrary described environment-friendly type high-temperature-resistant synthetic base foam drilling fluid of claim 1-3, it is characterized in that: adopt the organophilic clay of 1～3 part of mass fraction, the high temperature oil base whipping agent of 1～2 part, the high temperature oil base suds-stabilizing agent of 1～3 part, the synthetic base fluid of 92～97 parts, disperse phase is gas, formulated by high-speed stirring; Described synthetic base fluid is arbitrary or its any mixture in alpha-olefin, whiteruss, synthetic ester, low toxicity mineral oil, vegetables oil; Described high temperature oil base suds-stabilizing agent is oil-soluble copolymer polyhydric aliphatic acid alkylolamide ether, and preparation method comprises the following steps:
1) use polyhydric aliphatic acid under the effect of acid catalyst, react with methyl alcohol, obtain polyhydric aliphatic acid methyl esters;
2) polyhydric aliphatic acid methyl esters reacts with diethanolamine, obtains polyhydric aliphatic acid alkylolamide;
3), under catalyst action, obtain polyhydric aliphatic acid alkylolamide ether by polyhydric aliphatic acid alkylolamide and reacting ethylene oxide.
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| CN201110407297.XA CN102559157B (en) | 2011-12-09 | 2011-12-09 | Environmentally-friendly high-temperature-resistant synthetic base foam drilling fluid and preparation method thereof |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103013477B (en) * | 2012-10-20 | 2015-08-19 | 中国石油集团西部钻探工程有限公司 | Under-balanced drilling high temperature stiff foam and preparation method thereof |
| CA2908773C (en) * | 2014-05-08 | 2022-09-13 | Ineos Usa Llc | Drilling fluid and process of making the same |
| CN105086964A (en) * | 2014-05-12 | 2015-11-25 | 中国石油化工集团公司 | Low-toxicity oil base microbubble drilling fluid for protecting hydrocarbon reservoir |
| CN105086965B (en) * | 2014-05-14 | 2019-01-01 | 中国石油化工股份有限公司 | Oil base drilling fluid and its preparation method and application for high-temperature stratum |
| CN106554769A (en) * | 2015-09-25 | 2017-04-05 | 中国石油化工股份有限公司 | A kind of method of oil base foaming |
| CN106554760A (en) * | 2015-09-25 | 2017-04-05 | 中国石油化工股份有限公司 | A kind of method of oil base foaming |
| CN106554758A (en) * | 2015-09-25 | 2017-04-05 | 中国石油化工股份有限公司 | A kind of method of oil base foaming |
| CN106554762A (en) * | 2015-09-25 | 2017-04-05 | 中国石油化工股份有限公司 | A kind of method of oil base foaming |
| CN106554759A (en) * | 2015-09-25 | 2017-04-05 | 中国石油化工股份有限公司 | A kind of method of oil base foaming |
| CN106554756A (en) * | 2015-09-25 | 2017-04-05 | 中国石油化工股份有限公司 | A kind of foaming agent and foaming agent and its application and oil base foaming method |
| CN106554761A (en) * | 2015-09-25 | 2017-04-05 | 中国石油化工股份有限公司 | A kind of method of oil base foaming |
| CN114437683B (en) * | 2020-11-03 | 2023-08-11 | 中石化石油工程技术服务有限公司 | High-temperature-resistant oil-based foam drilling fluid and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101148579A (en) * | 2007-10-27 | 2008-03-26 | 东营泰尔石油技术有限公司 | High temperature resistant circulating micro-foam drilling fluid or completion fluid |
| CN101244372A (en) * | 2007-06-28 | 2008-08-20 | 中国地质大学（北京） | Foaming agent and circulation microvesicle drilling fluids and drilling technique |
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| US6297295B1 (en) * | 1999-03-03 | 2001-10-02 | Mbt Holding Ag | Transport of solid particulates |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101244372A (en) * | 2007-06-28 | 2008-08-20 | 中国地质大学（北京） | Foaming agent and circulation microvesicle drilling fluids and drilling technique |
| CN101148579A (en) * | 2007-10-27 | 2008-03-26 | 东营泰尔石油技术有限公司 | High temperature resistant circulating micro-foam drilling fluid or completion fluid |
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