CN102504772A - Biodiesel drilling fluid and preparation method thereof - Google Patents
Biodiesel drilling fluid and preparation method thereof Download PDFInfo
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- CN102504772A CN102504772A CN2011103014892A CN201110301489A CN102504772A CN 102504772 A CN102504772 A CN 102504772A CN 2011103014892 A CN2011103014892 A CN 2011103014892A CN 201110301489 A CN201110301489 A CN 201110301489A CN 102504772 A CN102504772 A CN 102504772A
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- drilling fluid
- biofuel
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- brown coal
- biodiesel
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Abstract
The invention belongs to the field of oilfield chemistry, and particularly relates to a safe and easily-degradable drilling fluid based on biodiesel and a preparation method thereof. The biodesel drilling fluid comprises biodiesel, and 3-10 grams of organic soil, 1-15 grams of organic lignite and 3-10 grams of asphalt added into every 100 mL of biodiesel. According to the invention, biodiesel instead of crude oil and diesel is used for researching a biodiesel drilling fluid system, so that the requirements of excellent lubricating performance, strong rejection capability, high well wall stability and high temperature resistance on the conventional oil-based drilling fluid can be met; the drilling fluid has low sulfur content and low emission of sulfur dioxide and sulfides; and moreover, the drilling fluid does not contain aromatic alkane which causes pollution on the environment, so that damage to the environment is very low, biodegradation occurs very easily, and excellent environmental protection characteristic is achieved.
Description
Technical field
The invention belongs to the oilfield chemistry field, be specifically related to a kind of with the biofuel be the basis safe, be prone to drilling fluid of degraded and preparation method thereof.
Background technology
Drilling fluid is the circulatory mediator that uses in the drilling process.Drilling fluid is main suspension, pressure-controlling, rock stratum stability, buoyancy, the lubricated and refrigerative task accomplished in drilling process.Drilling fluid has: at the bottom of the clear well, cutting carring; Cooling and lubricated drill bit and drill string; Balance rock of borehole wall pressure, sealing and stabilizing borehole; Equilibrium strata pressure; Reduce the landwaste settling velocity; Can sink except that sand and landwaste on ground; Effectively transmit effective power; Bear drilling rod and telescopic part gravity; The great mass of data on the stratum of boring is provided; Through vital role such as hydrofracture rocks.
Drilling fluid can be divided into oil base drilling fluid, water-base drilling fluid, gaseous type drilling fluid etc. by dispersion medium (external phase).The above two are drilling fluid commonly used in the present practical application.Drilling fluid mainly is made up of liquid phase, solid phase and chemical processing agent.Liquid phase can be water (fresh water, salt solution), oil (crude oil, diesel oil) or milk sap (contaminated product milk sap and anti-phase milk sap); Solid phase includes with solid phase (wilkinite, high-density weighting material) and useless solid phase (rock); Chemical processing agent comprises inorganic, organic and macromolecular compound.
Oil base drilling fluid be with oil (mainly being diesel oil or crude oil) be dispersion medium, be the colloidal sol suspension mixed system of disperse phase with weighting agent, various chemical processing agent and water etc.Chinese patent CN102040973A, CN1506435A all disclose a kind of oil base drilling fluid.Advantages such as oil base drilling fluid has that lubricity is good, strong inhibition capability, borehole wall stability is good and heat-resisting property is good; But because it is to be dispersion medium with diesel oil or crude oil, be difficult to degraded, pollute the environment; On the other hand, because the burning-point of oil is lower, the incendive characteristics of high temperature, and meet the shortcoming that aqueous condition can not dissolve each other down, more likely there is potential safety hazard; And preparation cost is higher.
Water-base drilling fluid is to be the colloidal sol suspensoid mixed system of disperse phase with water as dispersion medium, with clay (wilkinite), weighting agent and various chemical processing agent.Chinese patent CN10206382A and CN101501159A all disclose a kind of water-base drilling fluid.Water-base drilling fluid has advantages such as the source is abundant, cost is lower, pollution is low; Viscosity as the water of carrier is lower, film-forming properties is relatively poor, supporting capacity is low but be subject to; Make water-base drilling fluid be difficult to break through the bottleneck of oilness deficiency, compressive property difference all the time, must rely on to add its lubricity of lubricant increase.And seeing that profit is difficult to miscible character, also can only adds water base lubricant and use, this has also further limited the performance and the use of water-base drilling fluid.
Summary of the invention
For this reason, technical problem to be solved by this invention be drilling fluid in the prior art be difficult to satisfy simultaneously lowly pollute, the difficulty of high temperature resistant, high lubricating property, and then provide a kind of environmental protection to be prone to the drilling fluid of degraded, high temperature resistant and better performances.
The present invention also provides a kind of water of meeting to realize oil base drilling fluid that dissolve each other fully, that lubricity is good.
The present invention also provides the preparation method of above-mentioned biofuel drilling fluid.
For solving the problems of the technologies described above, the invention discloses the application that a kind of biofuel is used to prepare drilling fluid.
The invention also discloses a kind of drilling fluid, said drilling fluid comprises following component:
Biofuel;
Organophilic clay: every 100mL biofuel is added said organophilic clay 3-10g;
Organic brown coal: every 100mL biofuel is added said organic brown coal 1-15g;
Pitch: every 100mL biofuel is added said pitch 3-10g.
Said drilling fluid also comprises following component:
Emulsifying agent: every 100mL biofuel is added said emulsifying agent 1-5g.
Said drilling fluid also comprises following component:
Wetting agent: every 100mL biofuel is added said wetting agent 1-5g.
Said drilling fluid comprises following component:
Biofuel;
Organophilic clay: every 100mL biofuel is added said organophilic clay 3-5g;
Organic brown coal: every 100mL biofuel is added said organic brown coal 3-10g;
Pitch: every 100mL biofuel is added said pitch 4-8g.
Said drilling fluid also comprises following component:
Emulsifying agent: every 100mL biofuel is added said emulsifying agent 2-3g.
Said drilling fluid also comprises following component:
Wetting agent: every 100mL biofuel is added said wetting agent 2-3g.
Said organophilic clay is the polynite of quaternary ammonium salt cationic surfactant modification.
Said organic brown coal are the brown coal of chain alkyl amine modification.
Said biofuel is for being the biofuel of staple with the higher fatty acid methyl esters.
Said organophilic clay is the polynite of quaternary ammonium salt cationic surfactant modification.
Said organic brown coal are the brown coal of chain alkyl amine modification.
Said pitch is asphalt powder.
Said emulsifying agent selects tensio-active agent commonly used in the drilling fluid preparation field to get final product, for example sodium alkyl benzene sulfonate, glycerine or polyhydric alcohol fatty acid ester class tensio-active agent etc.
Said wetting agent selects tensio-active agent commonly used in the drilling fluid preparation field to get final product for example common tween product, polyol surfactant etc.
The preparation method of biofuel drilling fluid of the present invention is: take by weighing organophilic clay according to selected parts by weight respectively, and organic brown coal, pitch adds in the biofuel with other additives, stirs, and promptly gets.Wherein the addition sequence of various additives does not have strict restriction.
Biofuel (biodiesel fuel) is a kind of form of biomass energy; It is to be the liquid fuel that raw material is processed with oil plant waterplant such as oil-yielding shrubs fruit, engineering microalgaes such as oil crops such as soybean and Semen Brassicae campestris, oil palm and Chinese pistache and animal oil and fat, useless food and drink wet goods, is the fine fuel substitute.Its major ingredient of biofuel is for the mixture of the higher fatty acid low-carbon alkyl that is transformed through animal-plant oil, such as the higher fatty acid methyl esters.
Common biofuel is meant that vegetable and animals oils and methyl alcohol carry out the fatty acid methyl ester that transesterify generates, and is a kind of biofuel of cleaning, also is referred to as " regeneration fuel oil ".At present, good to the exploitation situation of biofuel in the world, and the approach of manufacturing biofuel mainly contains three: the one, utilize the edible fat production biofuel; The 2nd, utilize bagasse fermentative prodn diesel oil; The 3rd, utilize " engineering microalgae " to produce diesel oil.
" oil base drilling fluid On-Site Test Procedure " described in the specification sheets of the present invention is the issue of China national Bureau of Technical Supervision, numbering GB/T 16782-1997, and be 1997-05-08 date issued.
Technique scheme of the present invention is compared prior art and is had the following advantages:
1, the present invention replaces crude oil, diesel oil with biofuel; In order to development biofuel drilling fluid system;, strong inhibition capability good, borehole wall stability is good and heat-resisting property the is good requirement except the lubricity that can satisfy conventional oil base drilling fluid; And said drilling fluid sulphur content is low, and the discharging of sulfurous gas and sulfide is low; And do not contain the aromatic series alkane that environment is polluted in the said drill-in fluid, not only its infringement to environment is very low but also be easy to take place biological degradation, therefore has good environmental protection characteristic;
2, said biofuel drilling fluid itself has good lubricity, need not extra interpolation lubricant and can satisfy the requirement of drilling fluid to lubricity;
3, because the oiliness composition-biofuel itself in the said drilling fluid can realize dissolving each other of arbitrary proportion with water; Therefore said biofuel drilling fluid itself can be realized dissolving each other with the water layer that occurs in the drilling process; The emulsifying agent that adds simultaneously; More help burst to meet under the aqueous condition and realize dissolving each other with water immediately, guaranteed the stability of whole system;
3, said biofuel drilling fluid has high-temperature stability, and therefore the SF aspect transportation, storage, use is higher;
4, in view of greatly developing of biodiesel fuel field now, advantage such as it is lower to make that biofuel has a cost, and raw material sources are extensive can significantly reduce the cost of biofuel drilling fluid, thereby have very big application potential;
5, the antipollution of said biofuel drilling fluid (landwaste, calcium ion) excellent property has advantage safe in utilization;
6, the effect of thickening material has been played in the polynite that is used for the quaternary ammonium salt cationic surfactant modification, makes it have stronger oleophilicity, is more suitable for the dispersion of oil base drilling fluid system.
Embodiment
Below in conjunction with embodiment the present invention is further specified.Per-cent such as nothing among each embodiment particularly point out, and all are weight percentage, and used raw material is the situ of drilling well convenience goods.
1. biofuel: Shandong Huayang Oil Industry Co., Ltd;
2. organophilic clay: Henan Fu Bang scientific & technical corporation;
3. organic brown coal: Shandong De Shunyuan Petroleum Technology Co., Ltd;
4. pitch: the logical clever auxiliary agent in Dingxi City Manufacturing Co., Ltd;
5. CaSO
42H
2O: Chemical Reagent Co., Ltd., Sinopharm Group.
Embodiment 1:
Get the 100mL biofuel, add the polynite of 3g quaternary ammonium salt cationic surfactant modification, 4g pitch FF-2; The organic brown coal WGF of 10g; High-speed stirring 15 minutes, and be 8mL according to the API filtration that national standard method of announcing in " oil base drilling fluid On-Site Test Procedure " is measured the mixture that obtains, AV is 25.5mPas; PV is 19mPas, and yield value is 6.5Pa.
Explain that wellbore liquid leaching loss according to the invention and rheological property are good.
Embodiment 2:
Get the 100mL biofuel, add the 6g organophilic clay, 8g pitch FF-2, the organic brown coal WGF of 3g reaches 3g wetting agent tween 80 high-speed stirring 15 minutes, obtains biofuel drilling fluid according to the invention.Behind 180 ℃ of aging 16h of the drilling fluid that is disposed; Leave standstill the 48h drilling fluid layering does not take place, and to measure API filtration according to national standard method of announcing in " oil base drilling fluid On-Site Test Procedure " be 12mL that AV is 40mPas; PV is 35mPas, and yield value is 5Pa.
Explain that drilling fluid according to the invention has good high-temperature stability, can be applicable to the higher stratum of temperature.
Embodiment 3:
Get the 100mL biofuel; Add the 5g organobentonite, 7g pitch FF-2, the brown coal and the 2g emulsifier glycerol of the modification of 7g chain alkyl amine; Add the anti-landwaste ability of 10g sodium bentonite test gained drilling fluid again, high-speed stirring obtains required biofuel drilling fluid after 15 minutes.And to measure its API filtration according to national standard method of announcing in " oil base drilling fluid On-Site Test Procedure " be 8mL, and AV is 34mPas, and moulding viscosity is 26mPas, and yield value is 8Pa.
Explain that the ability that the anti-landwaste of drilling fluid according to the invention pollutes is good, have bigger landwaste (clay) capacity, in practical application, can not bring other problems because soil is invaded.
Embodiment 4:
Get 100mL fatty acid methyl ester biofuel, add the polynite of 5g quaternary ammonium salt cationic surfactant modification, 6g pitch FF-2, the organic brown coal WGF of 7g adds 5g CaSO again
4.2H
2O measures its antifouling property; After the high-speed stirring 15 minutes, and be 10mL according to the API filtration that national standard method of announcing in " oil base drilling fluid On-Site Test Procedure " is measured gained mixture, AV is 32.5mPas; PV is 30mPas, and yield value is 2.5Pa.
Explanation is under the situation that has a large amount of calcium ions to exist, and property of drilling fluid of the present invention changes little, and this invention has good anti-this pollutant performance.
Embodiment 5:
Get the 100mL biofuel, add the polynite of 5g quaternary ammonium salt cationic surfactant modification, 3g pitch FF-2; The organic brown coal WGF of 10g, 5g wetting agent sulphonated oil, high-speed stirring 15 minutes; And the API filtration of measuring the gained drilling fluid according to " oil base drilling fluid On-Site Test Procedure " middle national standard method of announcing is 10mL; AV is 16.5mPas, and PV is 15mPas, and yield value is 6 Pa.
Explain that wellbore liquid leaching loss according to the invention and rheological property are good.
Embodiment 6:
Get the 100mL biofuel, add the polynite of 8g quaternary ammonium salt cationic surfactant modification, 10g pitch FF-2; The organic brown coal WGF of 10g; High-speed stirring 15 minutes, and be 6mL according to the API filtration that national standard method of announcing in " oil base drilling fluid On-Site Test Procedure " is measured gained drilling fluid, AV is 30mPas; PV is 27mPas, and yield value is 10 Pa.
Explain that wellbore liquid leaching loss according to the invention and rheological property are good.
Embodiment 7:
Get the 100mL biofuel, add the polynite of 10g quaternary ammonium salt cationic surfactant modification, 4g pitch FF-2; The organic brown coal WGF of 3g, 1g emulsifier op-10, high-speed stirring 15 minutes; And the API filtration of measuring the gained drilling fluid according to " oil base drilling fluid On-Site Test Procedure " middle national standard method of announcing is 15mL; AV is 19mPas, and PV is 17mPas, and yield value is 4 Pa.
Explain that wellbore liquid leaching loss according to the invention and rheological property are good.
Embodiment 8:
Get the 100mL biofuel, add the polynite of 8g quaternary ammonium salt cationic surfactant modification, 4g pitch FF-2; The organic brown coal WGF of 1g; High-speed stirring 20 minutes, and be 6.5mL according to the API filtration that national standard method of announcing in " oil base drilling fluid On-Site Test Procedure " is measured gained drilling fluid, AV is 32mPas; PV is 27mPas, and yield value is 13 Pa.
Explain that wellbore liquid leaching loss according to the invention and rheological property are good.
Embodiment 9:
Get the 100mL biofuel, add the polynite of 9g quaternary ammonium salt cationic surfactant modification, 3g pitch FF-2; The organic brown coal WGF of 15g, 3g emulsifier op-10 and 1g wetting agent, high-speed stirring 15 minutes; And the API filtration of measuring the gained drilling fluid according to " oil base drilling fluid On-Site Test Procedure " middle national standard method of announcing is 5.5mL; AV is 45mPas, and PV is 30mPas, and yield value is 17 Pa.
Explain that wellbore liquid leaching loss according to the invention and rheological property are good.
Embodiment 10:
Get the 100mL biofuel, add the polynite of 6g quaternary ammonium salt cationic surfactant modification, 10g pitch FF-2; The organic brown coal WGF of 12g; 5g emulsifier op-10 and 2g wetting agent Ucar 35 high-speed stirring 10 minutes, and be 12mL according to the API filtration that national standard method of announcing in " oil base drilling fluid On-Site Test Procedure " is measured gained drilling fluid, AV is 16mPas; PV is 14mPas, and yield value is 3 Pa.
Explain that wellbore liquid leaching loss according to the invention and rheological property are good.
Obviously, the foregoing description only be for explanation clearly done for example, and be not qualification to embodiment.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being extended out thus or change still are among the protection domain of the invention.
Claims (12)
1. application that biofuel is used to prepare drilling fluid.
2. a drilling fluid is characterized in that, said drilling fluid comprises following component:
Biofuel;
Organophilic clay: every 100mL biofuel is added said organophilic clay 3-10g;
Organic brown coal: every 100mL biofuel is added said organic brown coal 1-15g;
Pitch: every 100mL biofuel is added said pitch 3-10g.
3. drilling fluid according to claim 2 is characterized in that, said drilling fluid also comprises following component:
Emulsifying agent: every 100mL biofuel is added said emulsifying agent 1-5g.
4. according to claim 2 or 3 described drilling fluids, it is characterized in that said drilling fluid also comprises following component:
Wetting agent: every 100mL biofuel is added said wetting agent 1-5g.
5. drilling fluid according to claim 2 is characterized in that, said drilling fluid comprises following component:
Biofuel;
Organophilic clay: every 100mL biofuel is added said organophilic clay 3-5g;
Organic brown coal: every 100mL biofuel is added said organic brown coal 3-10g;
Pitch: every 100mL biofuel is added said pitch 4-8g.
6. drilling fluid according to claim 5 is characterized in that, said drilling fluid also comprises following component:
Emulsifying agent: every 100mL biofuel is added said emulsifying agent 2-3g.
7. according to claim 5 or 6 described drilling fluids, it is characterized in that said drilling fluid also comprises following component:
Wetting agent: every 100mL biofuel is added said wetting agent 2-3g.
8. according to the arbitrary described drilling fluid of claim 2-7, it is characterized in that:
Said biofuel is for being the biofuel of staple with the higher fatty acid methyl esters.
9. according to the arbitrary described drilling fluid of claim 2-7, it is characterized in that:
Said organophilic clay is the polynite of quaternary ammonium salt cationic surfactant modification.
10. according to the arbitrary described drilling fluid of claim 2-7, it is characterized in that:
Said organic brown coal are the brown coal of chain alkyl amine modification.
11., it is characterized in that according to the arbitrary described drilling fluid of claim 2-7:
Said pitch is asphalt powder.
12. a method for preparing the arbitrary described drilling fluid of claim 2-11 is characterized in that: with organophilic clay, organic brown coal, pitch add in the said biofuel, stir, and promptly get according to selected parts by weight.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110301489.2A CN102504772B (en) | 2011-10-09 | 2011-10-09 | Biodiesel drilling fluid and preparation method thereof |
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| CN201110301489.2A CN102504772B (en) | 2011-10-09 | 2011-10-09 | Biodiesel drilling fluid and preparation method thereof |
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| CN102504772A true CN102504772A (en) | 2012-06-20 |
| CN102504772B CN102504772B (en) | 2014-02-05 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103194187A (en) * | 2013-04-09 | 2013-07-10 | 四川仁智油田技术服务股份有限公司 | Wetting agent for high-density oil-based drilling fluid and application of wetting agent |
| CN103320104A (en) * | 2013-06-27 | 2013-09-25 | 中国石油大学(北京) | Water-in-oil-type biodiesel-based drilling fluid and preparation method thereof |
| CN103497745A (en) * | 2013-10-12 | 2014-01-08 | 山东大学 | Method for thickening biodiesel by utilizing in-situ formed organic soil |
| CN108130058A (en) * | 2018-01-11 | 2018-06-08 | 日照职业技术学院 | A kind of new application of brew wine waste residue |
| CN109762539A (en) * | 2019-02-15 | 2019-05-17 | 北京启顺京腾科技有限责任公司 | A kind of New drilling fluid oil lubricant and its synthetic method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103194187A (en) * | 2013-04-09 | 2013-07-10 | 四川仁智油田技术服务股份有限公司 | Wetting agent for high-density oil-based drilling fluid and application of wetting agent |
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| CN103320104A (en) * | 2013-06-27 | 2013-09-25 | 中国石油大学(北京) | Water-in-oil-type biodiesel-based drilling fluid and preparation method thereof |
| CN103320104B (en) * | 2013-06-27 | 2015-09-02 | 中国石油大学(北京) | A kind of water-in-oil-type biofuel base drilling fluid and preparation method thereof |
| CN103497745A (en) * | 2013-10-12 | 2014-01-08 | 山东大学 | Method for thickening biodiesel by utilizing in-situ formed organic soil |
| CN103497745B (en) * | 2013-10-12 | 2016-01-13 | 山东大学 | A kind of method being formed organophilic clay thickening biofuel by original position |
| CN108130058A (en) * | 2018-01-11 | 2018-06-08 | 日照职业技术学院 | A kind of new application of brew wine waste residue |
| CN109762539A (en) * | 2019-02-15 | 2019-05-17 | 北京启顺京腾科技有限责任公司 | A kind of New drilling fluid oil lubricant and its synthetic method |
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