CN102504772B - Biodiesel drilling fluid and preparation method thereof - Google Patents
Biodiesel drilling fluid and preparation method thereof Download PDFInfo
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- CN102504772B CN102504772B CN201110301489.2A CN201110301489A CN102504772B CN 102504772 B CN102504772 B CN 102504772B CN 201110301489 A CN201110301489 A CN 201110301489A CN 102504772 B CN102504772 B CN 102504772B
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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 oilfield chemistry field, be specifically related to a kind of drilling fluid that biofuel is basic safe, easy degraded and preparation method thereof of take.
Background technology
Drilling fluid is the circulatory mediator using in drilling process.Drilling fluid mainly completes the task of suspension, pressure-controlling, rock stratum stability, buoyancy, lubrication and cooling in drilling process.Drilling fluid has: at the bottom of clear well, cutting carring; Cooling and Lubricator drill bit and drill string; Balance rock of borehole wall pressure, sealing and stabilizing borehole; Equilibrium strata pressure; Reduce landwaste settling velocity; On ground, can sink except sand and landwaste; Effectively transmit effective power; Bear the part gravity of drilling rod and sleeve pipe; The great mass of data of drilled strata is provided; By 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 conventional in current practical application.Drilling fluid is mainly comprised 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 inverse emulsion); Solid phase includes by 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 is that to take oil (being mainly diesel oil or crude oil) be dispersion medium, take the colloidal sol suspension mixed system that weighting agent, various chemical processing agent and water etc. are disperse phase.Chinese patent CN102040973A, CN1506435A all disclose a kind of oil base drilling fluid.The 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 that to take diesel oil or crude oil be dispersion medium, hard degradation, pollutes the environment; On the other hand, because oily burning-point is lower, the incendive feature of high temperature, and meet the shortcoming that can not dissolve each other under aqueous condition, more likely there is potential safety hazard; And preparation cost is higher.
Water-base drilling fluid be using water as dispersion medium, take the colloidal sol suspensoid mixed system that clay (wilkinite), weighting agent and various chemical processing agent be disperse phase.Chinese patent CN10206382A and CN101501159A all disclose a kind of water-base drilling fluid.Water-base drilling fluid has that source is abundant, cost is lower, pollute the advantages such as low, but be limited to, viscosity as the water of carrier is lower, film-forming properties is poor, supporting capacity is low, make water-base drilling fluid be difficult to all the time break through oilness deficiency, the poor bottleneck of compressive property, must rely on additional lubricant to increase its lubricity.And be difficult to miscible character in view of profit, and also can only add water base lubricant to use, this has also further limited performance and the use of water-base drilling fluid.
Summary of the invention
For this reason, technical problem to be solved by this invention is that drilling fluid in prior art is difficult to meet the difficulty of low pollution, high temperature resistant, high lubricating property simultaneously, and then provides that a kind of environmental protection is easily degraded, the drilling fluid of 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 completely, that lubricity is good.
The present invention also provides the preparation method of above-mentioned biodiesel drilling fluid.
For solving the problems of the technologies described above, the invention discloses a kind of biofuel for the preparation of the application of drilling fluid.
The invention also discloses a kind of drilling fluid, described drilling fluid comprises following component:
Biofuel;
Organophilic clay: every 100mL biofuel is added described organophilic clay 3-10g;
Organic brown coal: every 100mL biofuel is added described organic brown coal 1-15g;
Pitch: every 100mL biofuel is added described pitch 3-10g.
Described drilling fluid also comprises following component:
Emulsifying agent: every 100mL biofuel is added described emulsifying agent 1-5g.
Described drilling fluid also comprises following component:
Wetting agent: every 100mL biofuel is added described wetting agent 1-5g.
Described drilling fluid comprises following component:
Biofuel;
Organophilic clay: every 100mL biofuel is added described organophilic clay 3-5g;
Organic brown coal: every 100mL biofuel is added described organic brown coal 3-10g;
Pitch: every 100mL biofuel is added described pitch 4-8g.
Described drilling fluid also comprises following component:
Emulsifying agent: every 100mL biofuel is added described emulsifying agent 2-3g.
Described drilling fluid also comprises following component:
Wetting agent: every 100mL biofuel is added described wetting agent 2-3g.
Described organophilic clay is the polynite of quaternary ammonium salt cationic surfactant modification.
Described organic brown coal are the brown coal of chain alkyl amine modification.
Described biofuel is for take the biofuel that higher fatty acid methyl esters is main component.
Described organophilic clay is the polynite of quaternary ammonium salt cationic surfactant modification.
Described organic brown coal are the brown coal of chain alkyl amine modification.
Described pitch is asphalt powder.
Described emulsifying agent is selected conventional tensio-active agent in drilling fluid preparation field, such as sodium alkyl benzene sulfonate, glycerine or polyhydric alcohol fatty acid ester class tensio-active agent etc.
Described wetting agent is selected conventional tensio-active agent in drilling fluid preparation field, common tween product for example, polyol surfactant etc.
The preparation method of biodiesel drilling fluid of the present invention is: according to selected parts by weight, take organophilic clay respectively, and organic brown coal, pitch and other additives add in biofuel, stir, and obtain.The wherein not strict restriction of the addition sequence of various additives.
Biofuel (biodiesel fuel) is a kind of form of biomass energy, it is to take the liquid fuel that the oil plant waterplant such as oil-yielding shrubs fruit, the engineering microalgaes such as the oil crops such as soybean and Semen Brassicae campestris, oil palm and Chinese pistache and animal grease, biodiesel etc. make as raw material, is the fuel substitute of high-quality.The mixture that its major ingredient of biofuel is the higher fatty acid low-carbon alkyl that is transformed by animal-plant oil, such as higher fatty acid methyl esters.
The fatty acid methyl ester that common biofuel refers to vegetable and animals oils and methyl alcohol carries out transesterify generation, is a kind of biofuel of cleaning, is also referred to as " regeneration fuel oil ".At present, good to the development situation of biofuel in the world, and the approach of manufacture biofuel mainly contains three: the one, utilize edible fat production biofuel; The 2nd, utilize bagasse fermentative production diesel oil; The 3rd, utilize " engineering microalgae " to produce diesel oil.
The oil base drilling fluid of < < described in specification sheets of the present invention On-Site Test Procedure > > is the issue of China national Bureau of Technical Supervision, numbering GB/T 16782-1997, be 1997-05-08 date issued.
Technique scheme of the present invention has the following advantages compared to existing technology:
1, the present invention replaces crude oil, diesel oil with biofuel, in order to develop biodiesel drilling fluid system, except meeting, the lubricity of conventional oil base drilling fluid is good, strong inhibition capability, borehole wall stability is good and heat-resisting property is good requirement, and described drilling fluid sulphur content is low, and the discharge of sulfurous gas and sulfide is low; And in described drill-in fluid,, containing aromatic series alkane to environment, not only it is very low but also be easy to occur biological degradation to the infringement of environment, therefore has good environmental protection characteristic;
2, described biodiesel drilling fluid itself has good lubricity, without the extra lubricant that adds, can meet the requirement of drilling fluid to lubricity;
3, because the oiliness composition-biofuel in described drilling fluid itself can realize dissolving each other of arbitrary proportion with water, therefore described biodiesel drilling fluid itself can be realized and dissolving each other with the water layer that occurs in drilling process, the emulsifying agent simultaneously adding, more contribute to burst to meet under aqueous condition and realize and dissolving each other with water immediately, guaranteed the stability of whole system;
3, described biodiesel drilling fluid has high-temperature stability, therefore higher in the safety coefficient of transportation, storage, use;
4, in view of greatly developing of biodiesel fuel field now, make biofuel have cost lower, the advantage such as raw material sources are extensive, can significantly reduce the cost of biodiesel drilling fluid, thereby have very large application potential;
5, the antipollution of described biodiesel drilling fluid (landwaste, calcium ion) excellent property, has advantages of that use is safe;
6, use the effect of having played thickening material for the polynite of quaternary ammonium salt cationic surfactant modification, make it there is stronger lipophilicity, be more suitable for the dispersion of oil base drilling fluid system.
Embodiment
Below in conjunction with embodiment, the present invention will be further described.Per-cent in each embodiment, as without particularly pointing out, is all weight percentage, and raw material used is 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 get Shun Yuan Petroleum Technology Co., Ltd;
4. pitch: Dingxi City Tong Ling auxiliary agent Manufacturing Co., Ltd;
5. CaSO
42H
2o: Chemical Reagent Co., Ltd., Sinopharm Group.
embodiment 1:
Get 100mL biofuel, the polynite that adds the modification of 3g quaternary ammonium salt cationic surfactant, 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 the national standard method announced in < < oil base drilling fluid On-Site Test Procedure > > is measured the mixture obtaining, apparent viscosity is 25.5mPas, plastic viscosity is 19mPas, and yield value is 6.5Pa.
Illustrate that wellbore liquid leaching loss of the present invention and rheological property are good.
embodiment 2:
Get 100mL biofuel, add 6g organophilic clay, 8g pitch FF-2, the organic brown coal WGF of 3g, and 3g wetting agent tween 80 high-speed stirring 15 minutes, obtain biodiesel drilling fluid of the present invention.By after 180 ℃ of aging 16h of configured drilling fluid, there is not layering in standing 48h drilling fluid, and be 12mL according to the national standard method mensuration API filtration of announcing in < < oil base drilling fluid On-Site Test Procedure > >, apparent viscosity is 40mPas, plastic viscosity is 35mPas, and yield value is 5Pa.
Illustrate that drilling fluid of the present invention has good high-temperature stability, can be applicable to the stratum that temperature is higher.
embodiment 3:
Get 100mL biofuel, add 5g organobentonite, 7g pitch FF-2, brown coal and the 2g emulsifier glycerol of the modification of 7g chain alkyl amine, the anti-landwaste ability that adds again 10g sodium bentonite test gained drilling fluid, high-speed stirring obtains required biodiesel drilling fluid after 15 minutes.And according to the national standard method of announcing in < < oil base drilling fluid On-Site Test Procedure > >, to measure its API filtration be 8mL, apparent viscosity is 34mPas, moulding viscosity is 26mPas, and yield value is 8Pa.
Illustrate that the ability that the anti-landwaste of drilling fluid of the present invention pollutes is good, there is larger landwaste (clay) capacity, can not bring because soil is invaded other problems in actual applications.
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, then add 5g CaSO
4.2H
2o measures its antifouling property, after high-speed stirring 15 minutes, and be 10mL according to the API filtration of the national standard method mensuration gained mixture of announcing in < < oil base drilling fluid On-Site Test Procedure > >, apparent viscosity is 32.5mPas, plastic viscosity is 30mPas, and yield value is 2.5Pa.
Explanation is in the situation that having 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 100mL biofuel, the polynite that adds the modification of 5g quaternary ammonium salt cationic surfactant, 3g pitch FF-2, the organic brown coal WGF of 10g, 5g wetting agent sulphonated oil, high-speed stirring 15 minutes, and be 10mL according to the API filtration of the national standard method mensuration gained drilling fluid of announcing in < < oil base drilling fluid On-Site Test Procedure > >, apparent viscosity is 16.5mPas, plastic viscosity is 15mPas, and yield value is 6 Pa.
Illustrate that wellbore liquid leaching loss of the present invention and rheological property are good.
embodiment 6:
Get 100mL biofuel, the polynite that adds the modification of 8g quaternary ammonium salt cationic surfactant, 10g pitch FF-2, the organic brown coal WGF of 10g, high-speed stirring 15 minutes, and be 6mL according to the API filtration of the national standard method mensuration gained drilling fluid of announcing in < < oil base drilling fluid On-Site Test Procedure > >, apparent viscosity is 30mPas, plastic viscosity is 27mPas, and yield value is 10 Pa.
Illustrate that wellbore liquid leaching loss of the present invention and rheological property are good.
embodiment 7:
Get 100mL biofuel, the polynite that adds the modification of 10g quaternary ammonium salt cationic surfactant, 4g pitch FF-2, the organic brown coal WGF of 3g, 1g emulsifier op-10, high-speed stirring 15 minutes, and be 15mL according to the API filtration of the national standard method mensuration gained drilling fluid of announcing in < < oil base drilling fluid On-Site Test Procedure > >, apparent viscosity is 19mPas, plastic viscosity is 17mPas, and yield value is 4 Pa.
Illustrate that wellbore liquid leaching loss of the present invention and rheological property are good.
embodiment 8:
Get 100mL biofuel, the polynite that adds the modification of 8g quaternary ammonium salt cationic surfactant, 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 of the national standard method mensuration gained drilling fluid of announcing in < < oil base drilling fluid On-Site Test Procedure > >, apparent viscosity is 32mPas, plastic viscosity is 27mPas, and yield value is 13 Pa.
Illustrate that wellbore liquid leaching loss of the present invention and rheological property are good.
embodiment 9:
Get 100mL biofuel, the polynite that adds the modification of 9g quaternary ammonium salt cationic surfactant, 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 be 5.5mL according to the API filtration of the national standard method mensuration gained drilling fluid of announcing in < < oil base drilling fluid On-Site Test Procedure > >, apparent viscosity is 45mPas, plastic viscosity is 30mPas, and yield value is 17 Pa.
Illustrate that wellbore liquid leaching loss of the present invention and rheological property are good.
embodiment 10:
Get 100mL biofuel, the polynite that adds the modification of 6g quaternary ammonium salt cationic surfactant, 10g pitch FF-2, the organic brown coal WGF of 12g, 5g emulsifier op-10 and 2g wetting agent propylene glycol high-speed stirring 10 minutes, and be 12mL according to the API filtration of the national standard method mensuration gained drilling fluid of announcing in < < oil base drilling fluid On-Site Test Procedure > >, apparent viscosity is 16mPas, plastic viscosity is 14mPas, and yield value is 3 Pa.
Illustrate that wellbore liquid leaching loss of the present invention and rheological property are good.
Obviously, above-described embodiment is only for example is clearly described, and the not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.And the apparent variation of being extended out thus or change are still among the protection domain in the invention.
Claims (13)
1. a drilling fluid, is characterized in that, described drilling fluid is comprised of following component:
Biofuel;
Organophilic clay: every 100mL biofuel is added described organophilic clay 3-10g;
Organic brown coal: every 100mL biofuel is added described organic brown coal 1-15g;
Pitch: every 100mL biofuel is added described pitch 3-10g.
2. drilling fluid according to claim 1, is characterized in that, described drilling fluid is comprised of following component:
Biofuel;
Organophilic clay: every 100mL biofuel is added described organophilic clay 3-5g;
Organic brown coal: every 100mL biofuel is added described organic brown coal 3-10g;
Pitch: every 100mL biofuel is added described pitch 4-8g.
3. a drilling fluid, is characterized in that, described drilling fluid is comprised of following component:
Biofuel;
Organophilic clay: every 100mL biofuel is added described organophilic clay 3-10g;
Organic brown coal: every 100mL biofuel is added described organic brown coal 1-15g;
Pitch: every 100mL biofuel is added described pitch 3-10g;
Emulsifying agent: every 100mL biofuel is added described emulsifying agent 1-5g.
4. drilling fluid according to claim 3, is characterized in that, described drilling fluid is comprised of following component:
Biofuel;
Organophilic clay: every 100mL biofuel is added described organophilic clay 3-5g;
Organic brown coal: every 100mL biofuel is added described organic brown coal 3-10g;
Pitch: every 100mL biofuel is added described pitch 4-8g;
Emulsifying agent: every 100mL biofuel is added described emulsifying agent 2-3g.
5. a drilling fluid, is characterized in that, described drilling fluid is comprised of following component:
Biofuel;
Organophilic clay: every 100mL biofuel is added described organophilic clay 3-10g;
Organic brown coal: every 100mL biofuel is added described organic brown coal 1-15g;
Pitch: every 100mL biofuel is added described pitch 3-10g;
Wetting agent: every 100mL biofuel is added described wetting agent 1-5g.
6. drilling fluid according to claim 5, is characterized in that, described drilling fluid is comprised of following component:
Biofuel;
Organophilic clay: every 100mL biofuel is added described organophilic clay 3-5g;
Organic brown coal: every 100mL biofuel is added described organic brown coal 3-10g;
Pitch: every 100mL biofuel is added described pitch 4-8g;
Wetting agent: every 100mL biofuel is added described wetting agent 2-3g.
7. a drilling fluid, is characterized in that, described drilling fluid is comprised of following component:
Biofuel;
Organophilic clay: every 100mL biofuel is added described organophilic clay 3-10g;
Organic brown coal: every 100mL biofuel is added described organic brown coal 1-15g;
Pitch: every 100mL biofuel is added described pitch 3-10g;
Emulsifying agent: every 100mL biofuel is added described emulsifying agent 1-5g;
Wetting agent: every 100mL biofuel is added described wetting agent 1-5g.
8. drilling fluid according to claim 7, is characterized in that, described drilling fluid is comprised of following component:
Biofuel;
Organophilic clay: every 100mL biofuel is added described organophilic clay 3-5g;
Organic brown coal: every 100mL biofuel is added described organic brown coal 3-10g;
Pitch: every 100mL biofuel is added described pitch 4-8g;
Emulsifying agent: every 100mL biofuel is added described emulsifying agent 2-3g;
Wetting agent: every 100mL biofuel is added described wetting agent 2-3g.
9. according to the arbitrary described drilling fluid of claim 1-8, it is characterized in that:
Described biofuel is for take the biofuel that higher fatty acid methyl esters is main component.
10. according to the arbitrary described drilling fluid of claim 1-8, it is characterized in that:
Described organophilic clay is the polynite of quaternary ammonium salt cationic surfactant modification.
11. according to the arbitrary described drilling fluid of claim 1-8, it is characterized in that:
Described organic brown coal are the brown coal of chain alkyl amine modification.
12. according to the arbitrary described drilling fluid of claim 1-8, it is characterized in that:
Described pitch is asphalt powder.
13. 1 kinds of methods of preparing the drilling fluid described in claim 1 or 2, is characterized in that: according to selected parts by weight by organophilic clay, organic brown coal, pitch adds in described biofuel, stirs, and obtains.
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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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110301489.2A CN102504772B (en) | 2011-10-09 | 2011-10-09 | Biodiesel drilling fluid and preparation method thereof |
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| CN102504772A CN102504772A (en) | 2012-06-20 |
| CN102504772B true CN102504772B (en) | 2014-02-05 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103194187B (en) * | 2013-04-09 | 2016-08-03 | 四川仁智油田技术服务股份有限公司 | A kind of wetting agent for high density oil base drilling fluid and application 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 |
| 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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| CN1660958A (en) * | 2004-02-23 | 2005-08-31 | 中海石油（中国）有限公司天津分公司 | Drilling fluid with synthesized substrate |
| CN101228249A (en) * | 2005-04-01 | 2008-07-23 | 巴斯福股份公司 | Drilling fluid containing hydrophobin |
| CN101531889A (en) * | 2009-04-13 | 2009-09-16 | 中国石油集团川庆钻探工程有限公司 | Oil-based stuck freeing fluid for well drilling |
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- 2011-10-09 CN CN201110301489.2A patent/CN102504772B/en not_active Expired - Fee Related
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| GB2331761A (en) * | 1999-03-15 | 1999-06-02 | Procter & Gamble | Pour point depression of heavy cut methyl esters via alkyl methacrylate copolymer |
| CN1660958A (en) * | 2004-02-23 | 2005-08-31 | 中海石油（中国）有限公司天津分公司 | Drilling fluid with synthesized substrate |
| CN101228249A (en) * | 2005-04-01 | 2008-07-23 | 巴斯福股份公司 | Drilling fluid containing hydrophobin |
| CN101531889A (en) * | 2009-04-13 | 2009-09-16 | 中国石油集团川庆钻探工程有限公司 | Oil-based stuck freeing fluid for well drilling |
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