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WO1992015771A1 - Extraction de petrole amelioree - Google Patents

Extraction de petrole amelioree Download PDF

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Publication number
WO1992015771A1
WO1992015771A1 PCT/GB1992/000378 GB9200378W WO9215771A1 WO 1992015771 A1 WO1992015771 A1 WO 1992015771A1 GB 9200378 W GB9200378 W GB 9200378W WO 9215771 A1 WO9215771 A1 WO 9215771A1
Authority
WO
WIPO (PCT)
Prior art keywords
reservoir
bacterium
lactic acid
oil
bacteria
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.)
Ceased
Application number
PCT/GB1992/000378
Other languages
English (en)
Inventor
Julie Kathleen Coleman
Melanie Jane Brown
Vivian Moses
Clifford Charles Burton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Archaeus Technology Group Ltd
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Archaeus Technology Group Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Archaeus Technology Group Ltd filed Critical Archaeus Technology Group Ltd
Publication of WO1992015771A1 publication Critical patent/WO1992015771A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
    • C09K8/582—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of bacteria
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/60—Compositions for stimulating production by acting on the underground formation
    • C09K8/84—Compositions based on water or polar solvents
    • C09K8/86—Compositions based on water or polar solvents containing organic compounds
    • C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
    • C09K8/90—Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
    • C09K8/905—Biopolymers
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P7/00—Preparation of oxygen-containing organic compounds
    • C12P7/40—Preparation of oxygen-containing organic compounds containing a carboxyl group including Peroxycarboxylic acids
    • C12P7/56—Lactic acid

Definitions

  • the present invention relates to the use of
  • Carbonate rock tends to have very low permeability particularly when there are no fractures present.
  • the rock structure may be cemented together by carbonate, or carbonate scales may accumulate close to production wells as a result of carbon dioxide being released from solution due to the presence of a pressure drop.
  • carbonate scales may accumulate close to production wells as a result of carbon dioxide being released from solution due to the presence of a pressure drop.
  • Another type of scale that can accumulate around production wells is iron scale, in particular iron oxides and hydroxides. Low permeability, drilling damage and accumulation of scale all impede the flow of oil to the
  • Acid treatments are employed in all types of oil wells: they may be used to open fractures or remove damage in newly drilled wells or to rehabilitate old wells from which production has declined. Acid (usually hydrochloric acid though acetic and formic acids are used on occasion) is pumped into the well, where it reacts with the calcium carbonate according to the following stoichiometry:
  • Calcium chloride (CaCl 2 ) is highly soluble in water and the acid attack etches channels in the rock which improves the oil flow towards the production well.
  • Conventionally oil wells in carbonate reservoirs are acidised immediately after drilling before production commences and often repeat
  • the conventional acidisation technique has the advantage that it is quick, usually taking less than a day, and the raw material is cheap.
  • the hydrochloric acid is highly corrosive involving expensive and careful handling when being transported to the well and pumped downhole.
  • Hydrochloric acid also corrodes the downhole equipment, such as pumps, casing and tubulars made of steel, chrome or aluminium. It requires the addition of
  • a further disadvantage is that the acid reacts too quickly in carbonate reservoirs and is
  • DD-A-322000 discloses the use of Clostridium and Bacillus
  • Clostridium is useful for enhanced oil recovery.
  • a method of stimulating oil recovery from an oil reservoir which comprises:
  • the inoculum and/or nutrients may be injected at either above, at, or below the reservoir fracture pressure.
  • the pressure may be varied during injection.
  • the bacteria for use in the invention will be those in which more than 50%, and usually more than 75%, of the acid produced during fermentation is lactic acid.
  • lactic acid producing bacteria are capable of
  • Lactic acid is produced by the lactic acid
  • the lactic acid bacteria are the lactic acid bacteria, which include the bacterial genera Lactobacillus. Pediococcus, Streptococcus and Leuconostoc, as a product of fermentative metabolism.
  • the lactic acid bacteria are the lactic acid bacteria.
  • Lactic acid is the major acid produced during fermentation and for many species (homofermenters) the only product. Homofermenters are capable of converting glucose quantitively to lactic acid, heterofermenters to an equimolar mixture of lactic acid, ethanol and carbon dioxide. Certain species of spore forming bacteria including Sporolactobacillus inulinis and Bacillus (such as Bacillus laevolacticus) are capable of homofermentative conversion of glucose to lactic acid. These organisms are also considered to be lactic acid bacteria for the purposes of this invention.
  • the fermentation involves the anaerobic (oxygen independent) breakdown of carbon substrate such as sugars to lactic acid as a means of providing energy for growth.
  • the solubility of calcium lactate is approximately 80g/l in water compared with 15mg/l for CaCO 3 .
  • lactic acid bacteria may be used.
  • the choice of species will ultimately be the choice of those of skill in the art and will vary depending upon the conditions encountered in the particular oil well which is to be acidised. Parameters which will influence the choice of species and preferred bacterial species are disclosed below.
  • the bacteria In order for the bacteria to produce a quantity of lactic acid in situ sufficient to achieve oil well acidisation, it is desirable to provide a suitable nutrient source in situ.
  • the nutrients may be supplied together with or subsequent to the injection of the bacteria.
  • a lactic acid bacterium in enhancing oil recovery from an oil reserve found in a carbonate rock formation.
  • a lactic acid bacterium in removing carbonate or iron scale, such as iron oxides or hydroxides in reservoirs and oilfield equipment.
  • the lactic acid bacteria may be used to remove calcium carbonate scale from sites in oil recovery operations in which scale build up impedes the flow of oil.
  • sites include pipework, pumps and tubulars, as well as sandstone reservoirs.
  • Bacteria can be pumped deep into the formation
  • hydrochloric acid particularly if the acid contains corrosion inhibitors.
  • Temperature tolerance- The temperature of a reservoir is a function of its depth and can be in excess of 100 oC. Bacteria can be isolated wherever there is liquid water though the variation of species drops off sharply as temperatures rise above 60 °C. Many onshore reservoirs and some offshore reservoirs in carbonate formations are fairly shallow with temperatures falling within the
  • Salt tolerance - The ability to withstand high salt
  • Size - The ability of the bacteria to enter pores in the rock is vital and where the permeability is very low ( ⁇ 5 mD) the size of the bacteria becomes a limiting factor as the pore throats can be as small as l ⁇ m.
  • Bacteria vary widely in size from ⁇ 1 ⁇ m to >20 ⁇ m in
  • the lactic acid bacteria range in size from cocci 0.6 ⁇ m in diameter to rods 9 ⁇ m long.
  • Resistance to oil toxiciiy - Bacteria must be tolerant of oil although they remain in the aqueous phase within the reservoir.
  • lactic acid bacteria are more tolerant of salt than others. Salt tolerance can be increased by progressive adaptation of the bacteria to increasing salt concentrations up to 11% NaCl.
  • the efficiency of acid production will usually be the key parameter in selecting a suitable strain of bacterium. However, in situations where permeability of the oil field is very low, it will also be necessary that the microbe is small enough to penetrate the reservoir rock. Under these conditions
  • One method for screening lactic acid bacteria to select a strain compatible with the reservoir conditions for stimulating oil production from an oil well comprises:
  • (v) optionally, if desired, improving the tolerance of the selected lactic acid bacteria to reservoir conditions, such as high salinity, by adaptation.
  • Adaptation of a selected strain may be performed by conventional techniques known to those of skill in the art. Generally, this involves growing the selected strain under increasing levels of the parameter to which the strain is being adapted, eg salt concentrations.
  • the optimal strain of bacteria will preferably be selected in step (iv) above in conjunction with a suitable bulk carbon source.
  • Typical carbon sources include sugars, such as glucose, sucrose, dextrose and fructose.
  • a preferred source of carbon is molasses.
  • the molasses is from South Africa or Central America [United Molasses] or an equivalent product with a similar content of fermentable sugars, ie. about 45-75% glucose and fructose. From 1 to 5% for example 2% v/v, is a suitable concentration of molasses in a nutrient medium as a carbon source.
  • invertase treatment of the molasses may be performed to increase the availability of reducing sugars. Invertase converts sucrose into glucose and fructose. A concentration of about 0.1% w/v invertase is suitable for this purpose.
  • a source of nitrogen is required.
  • Typical sources of nitrogen include cheese whey and skimmed milk.
  • Cheese whey may be acidic or neutralised. It may be in dried or liquid form. Dried, acidic cheese whey is preferred. Desirably, the cheese whey will have a protein content of from 10 to 15% by weight.
  • a nutrient medium will preferably contain from 1 to 10% w/v cheese whey when the whey is added in solid form. If liquid cheese whey is used, a greater quantity will usually be required since liquid whey has a lower protein content, typically 1%.
  • Cheese whey is a by-product of cheese making, and available from manufacturers in the dairy industry.
  • One suitable source is "Kraffen" (Trade Mark) acidic whey powder from St. Ivel Limited, U.K. Skimmed milk may be in dried or liquid form. It may be spray dried or instantised and will preferably contain 34-37% protein.
  • a suitable source of skimmed milk is that obtained from St.
  • yeast extract and peptone are widely used for microbial culture and are available from a variety of suppliers, eg.
  • Either or both of the yeast extract and peptone components may be used in a nutrient medium, for example at a concentration of 0.1 to 20% w/v, preferably from 0.5 to 2% w/v.
  • Other nitrogen sources include ammonium salts, eg ammonium chloride, ammonium phosphate, ammonium sulphate and ammonium nitrate, corn steep liquor, distillers grains and solubles, and soybean flour.
  • microbial growth is dependent upon trace amounts of minerals and vitamins.
  • Sodium, potassium, magnesium and manganese salts may be added to a growth medium.
  • the sulphate and chloride salts of the above metals may be used. Chloride salts are preferred since this will reduce the sulphur content of the medium. This is
  • manganese chloride or manganese sulphate may be added.
  • manganese salt may be used. We have found that this may increase acid production in some cases.
  • Lactobacillus and
  • Pediococcus species are believed to require pantothenic acid, niacin, riboflavin, folic acid, vitamin B12 and thiamin. These vitamins may be added in trace amounts although we have found that many carbon and nitrogen sources of the type mentioned above contain sufficient trace amounts of these essential requirements.
  • the treatment can begin. Depending on the character of the rock around the wellbore or the expected length of the fractures the amount of acid needed can be calculated. This will determine the inoculum size and the amount of nutrient to be employed.
  • the inoculum is grown up and injected down the production well and a period of time is allowed to elapse to allow penetration of the rock by the bacteria.
  • the injection of bacteria and nutrients may be 'pulsed' by changing the injection rate at intervals in order to enhance the
  • the bacteria may be injected together with the nutrients and time may be allowed at the surface for the fermentation to commence. Usually the process will take between 12 and 168 hours. The well may be shut for all or part of this period to allow the reaction to proceed. Once the process is complete production can begin. When pumping is commenced, injected water containing bacterial fermentation products will be back produced at the surface before oil production starts.
  • Case study 1 examines the screening procedure for the US reservoir and case study 2 examine the screening procedure for the UK reservoir.
  • microbes used in the screen are listed in Table 1. They all produce lactic acid as the major end product of fermentation, with the exception of Clostridium acetobutylicum. which was included for comparison.
  • Clostridium acetobutylicum all the bacteria were aerotolerant and grown in static culture in universal bottles. Medium was dispensed in 20ml volumes into universal bottles and autoclaved (121oC, 15psi) before being inoculated with a 1% v/v overnight culture. Growth took place in incubators at various
  • o-cresophthalein solution prepared by dissolving 0.1g o-cresopththalein complexone, 2.5g 8-hydroxyquinoline and 21ml concentrated hydrochloric acid in 11 distilled water].
  • the purple colour formed was measured spectrophotometrically at 535nm.
  • a standard curve (0-60 ⁇ g Ca/ml) was prepared using a solution of CaCl 2 .2H 2 O (0.275g/l CaCl 2 .2H 2 O - 100 ⁇ g Ca/ml).
  • Dissolution of iron scale was measured by determining the concentration of soluble iron in the culture supernatant (centrifugation: 10,000 rpm, 10 min, 4'C) using the following assay procedure. To 1ml of supernatant was added the following: 0.2ml citric acid
  • Table 1 shows that all of the bacteria tested were able to grow under the U.S. reservoir conditions and most grew in 3% sodium chloride.
  • the permeability of the US reservoir is sufficiently high that the size of the Lactobacillus rods is not a factor limiting their penetration through the rock.
  • Pediococcus acidilactici and Lactobacillus sp. all produced a significantly greater quantity of acid than the other microbes tested. All the bacteria tested were effective at dissolving 5g/l calcium carbonate scale and Lactobacillus fermentum and
  • Pediococcus acidilactici were the most effective at dissolving iron scale. As acid production from a cheap carbon source such as molasses is key to the success of this invention, this criterion had the most weight in the selection. After the initial screen Lactobacillus plantarum was identified as the most suitable organism. Due to its acid yield and ability to dissolve iron scale Pediococcus acidilactici would also be a candidate for the US reservoir.
  • Pediococcus acidilactici produced the greatest amount of acid and was the only microbe able to grow in 7% NaCl. It was also able to withstand the injection pressure of 3000 psi necessary to fracture the reservoir. It has a much smaller size than the Lactobacillus species tested and is by far the most suitable bacterium for the stimulation of the UK reservoir.
  • the pH of MRS is about 6.2. Additions such as NaCl were added before autoclaving.
  • Glucose broth Oxoid nutrient broth + glucose
  • Vitamin solution is, per 1l distilled water: Biotin 2mg; Folic acid 2mg, pyridoxine-HCl 10mg; Thiamine-HCl 5mg; Riboflavin 5mg; Nictoinic Acid 5 mg; DL-Ca Pantothinate 5mg; Vitamin B 12 0.1mg; p-Amino Benzoic Acid 5mg;
  • Fluid thioglycollate medium
  • Lactobacillus plantarum (LM1) Tate and Lyle + - rod 3-8 1.04
  • thermoaceticum DSM 2910 Bacillus laevolacticus NCIMB 10269 _ rod 0.4-1

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Health & Medical Sciences (AREA)
  • Microbiology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biotechnology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
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Abstract

La présente invention concerne l'utilisation de bactéries productrices d'acide lactique dans les opérations d'extraction de pétrole et fournit un procédé de stimulation de l'extraction de pétrole à partir d'un gisement pétrolifère, qui consiste à (i) injecter un inoculum d'une bactérie productrice d'acide lactique compatible avec l'état du gisement dans un puits foré dans le gisement; (ii) à injecter dans le gisement une source de substances nutritives pour les bactéries; (iii) à permettre aux bactéries de fermenter et de produire ainsi de l'acide lactique; et (iv) à extraire le pétrole du gisement. Les bactéries spécialement préférées sont celles des genres Lactobacillus et Pediococcus. L'acide lactique produit par les bactéries peut également être utilisé pour enlever le carbonate ou le mâchefer des équipements pétroliers.
PCT/GB1992/000378 1991-03-04 1992-03-04 Extraction de petrole amelioree Ceased WO1992015771A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB919104491A GB9104491D0 (en) 1991-03-04 1991-03-04 Stimulation of oil production
GB9104491.7 1991-03-04

Publications (1)

Publication Number Publication Date
WO1992015771A1 true WO1992015771A1 (fr) 1992-09-17

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AU (1) AU1353792A (fr)
CA (1) CA2105288A1 (fr)
GB (1) GB9104491D0 (fr)
WO (1) WO1992015771A1 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994025731A1 (fr) * 1993-04-29 1994-11-10 Cleansorb Limited Acidification de reservoirs souterrains
WO2001033041A1 (fr) * 1999-11-04 2001-05-10 Statoil Asa Procede de traitement d'une formation d'hydrocarbures
GB2372040A (en) * 2001-02-07 2002-08-14 Schlumberger Holdings Recovery of hydrocarbons from a mixture of hydrocarbons and drilling fluid by selective reaction of the drilling fluid leaving the hydrocarbon unaffected
US7567084B2 (en) 2003-03-17 2009-07-28 Electromagnetic Geoservices As Method and apparatus for determining the nature of submarine reservoirs
CN101988381A (zh) * 2010-08-07 2011-03-23 中国石油化工股份有限公司 一种利用产酸菌解除油井堵塞的方法
WO2012166290A1 (fr) * 2011-05-27 2012-12-06 Golden Corn Technologies, Llc Alimentation de bétail améliorée à partir d'un sous-produit d'éthanol de maïs
US8603801B1 (en) 2008-03-07 2013-12-10 Golden Corn Technologies, Llc Method of processing stillage
WO2014193521A1 (fr) * 2013-05-28 2014-12-04 Halliburton Energy Services, Inc. Dégradation de gâteau de filtration de puits de forage à l'aide de micro-organismes produisant de l'acide
US8913463B2 (en) 2006-10-12 2014-12-16 Electromagnetic Geoservices Asa Positioning system
US9030909B2 (en) 2006-02-06 2015-05-12 Statoil Petroleum As Method of conducting a seismic survey
US9683162B2 (en) 2011-05-31 2017-06-20 Goe-Ip As Method for microbial control of injection liquid flow in a hydrocarbon reservoir
CN107939341A (zh) * 2017-11-29 2018-04-20 大庆华营化工有限公司 一种微生物清防蜡剂及其制备方法
CN114427400A (zh) * 2020-09-21 2022-05-03 中国石油化工股份有限公司 一种利用产酸微生物提高生物灰岩油藏开发效果的方法
CN114907829A (zh) * 2022-06-11 2022-08-16 浙江工业大学 一种利用复合生纳材料提高原油采收率的方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2852077A (en) * 1955-04-27 1958-09-16 Nat Aluminate Corp Process of improving and maintaining the water permeability of geological formations
US4446919A (en) * 1982-04-26 1984-05-08 Phillips Petroleum Company Enhanced oil recovery using microorganisms
US4749652A (en) * 1985-08-19 1988-06-07 Texaco Inc. Lactic acid process

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2852077A (en) * 1955-04-27 1958-09-16 Nat Aluminate Corp Process of improving and maintaining the water permeability of geological formations
US4446919A (en) * 1982-04-26 1984-05-08 Phillips Petroleum Company Enhanced oil recovery using microorganisms
US4749652A (en) * 1985-08-19 1988-06-07 Texaco Inc. Lactic acid process

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NTIS TECH NOTES. no. 9, September 1984, SPRINGFIELD, VA US page 626; TECNICAL INFORMATION CENTER: 'bacteria aid in oil production and utilisation' *

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994025731A1 (fr) * 1993-04-29 1994-11-10 Cleansorb Limited Acidification de reservoirs souterrains
AU674949B2 (en) * 1993-04-29 1997-01-16 Cleansorb Limited Acidising underground reservoirs
US5678632A (en) * 1993-04-29 1997-10-21 Cleansorb Limited Acidizing underground reservoirs
CN1056903C (zh) * 1993-04-29 2000-09-27 克宁索有限公司 一种酸化处理地下储层的方法
WO2001033041A1 (fr) * 1999-11-04 2001-05-10 Statoil Asa Procede de traitement d'une formation d'hydrocarbures
US7124817B1 (en) 1999-11-04 2006-10-24 Statoil Asa Method of treating a hydrocarbon bearing formation
GB2372040A (en) * 2001-02-07 2002-08-14 Schlumberger Holdings Recovery of hydrocarbons from a mixture of hydrocarbons and drilling fluid by selective reaction of the drilling fluid leaving the hydrocarbon unaffected
GB2372040B (en) * 2001-02-07 2003-07-30 Schlumberger Holdings Improvements in or relating to sampling of hydrocarbons from geological formations
US7094736B2 (en) 2001-02-07 2006-08-22 Schlumberger Technology Corporation Sampling of hydrocarbons from geological formations
US7567084B2 (en) 2003-03-17 2009-07-28 Electromagnetic Geoservices As Method and apparatus for determining the nature of submarine reservoirs
US9030909B2 (en) 2006-02-06 2015-05-12 Statoil Petroleum As Method of conducting a seismic survey
US8913463B2 (en) 2006-10-12 2014-12-16 Electromagnetic Geoservices Asa Positioning system
US8603801B1 (en) 2008-03-07 2013-12-10 Golden Corn Technologies, Llc Method of processing stillage
US8722392B2 (en) 2009-03-06 2014-05-13 Golden Corn Technologies, L.L.C. Livestock feed from corn ethanol byproduct
CN101988381A (zh) * 2010-08-07 2011-03-23 中国石油化工股份有限公司 一种利用产酸菌解除油井堵塞的方法
WO2012166290A1 (fr) * 2011-05-27 2012-12-06 Golden Corn Technologies, Llc Alimentation de bétail améliorée à partir d'un sous-produit d'éthanol de maïs
US9683162B2 (en) 2011-05-31 2017-06-20 Goe-Ip As Method for microbial control of injection liquid flow in a hydrocarbon reservoir
US10138409B2 (en) 2011-05-31 2018-11-27 Goe-Ip As Method for microbial control of injection liquid flow in a hydrocarbon reservoir
WO2014193521A1 (fr) * 2013-05-28 2014-12-04 Halliburton Energy Services, Inc. Dégradation de gâteau de filtration de puits de forage à l'aide de micro-organismes produisant de l'acide
CN107939341A (zh) * 2017-11-29 2018-04-20 大庆华营化工有限公司 一种微生物清防蜡剂及其制备方法
CN114427400A (zh) * 2020-09-21 2022-05-03 中国石油化工股份有限公司 一种利用产酸微生物提高生物灰岩油藏开发效果的方法
CN114907829A (zh) * 2022-06-11 2022-08-16 浙江工业大学 一种利用复合生纳材料提高原油采收率的方法
CN114907829B (zh) * 2022-06-11 2023-12-26 浙江工业大学 一种利用复合生纳材料提高原油采收率的方法

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CA2105288A1 (fr) 1992-09-05
GB9104491D0 (en) 1991-04-17
AU1353792A (en) 1992-10-06

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