WO2006118570A1 - Biogenic fuel gas generation in geologic hydrocarbon deposits - Google Patents
Biogenic fuel gas generation in geologic hydrocarbon deposits Download PDFInfo
- Publication number
- WO2006118570A1 WO2006118570A1 PCT/US2005/015259 US2005015259W WO2006118570A1 WO 2006118570 A1 WO2006118570 A1 WO 2006118570A1 US 2005015259 W US2005015259 W US 2005015259W WO 2006118570 A1 WO2006118570 A1 WO 2006118570A1
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- WO
- WIPO (PCT)
- Prior art keywords
- formation
- water
- formation water
- amended
- geologic
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/40—Separation associated with re-injection of separated materials
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Definitions
- the present invention relates to the transport of formation water within, or between, hydrocarbon containing geologic formations. Specifically, the invention relates to systems and methods of extracting and transporting formation water such that microorganisms present in the formation water remain viable.
- Embodiments of the invention relate to processes for introducing microorganisms to carbonaceous material in an anaerobic environment.
- the processes may include extracting formation water from a geologic formation, and removing at least a portion of an extractable material from the formation water to make amended formation water.
- the processes may further include introducing the amended formation water to the carbonaceous material.
- Embodiments of the invention also relate to processes for increasing biogenic hydrocarbon production in a geologic formation containing a carbonaceous material.
- the processes may include extracting formation water from the formation, and removing at least a portion of one or more hydrocarbons from the formation water to make amended formation water.
- the processes may further include reintroducing the amended formation water to the geologic formation.
- Embodiments of the invention may still further relate to processes for transporting formation water between geologic formations.
- the processes may include extracting the formation water from a first formation, and removing at least a portion of a hydrocarbon from the formation water to make amended formation water.
- the processes may also include transporting the amended formation water to a second geologic formation, and introducing the amended formation water to the carbonaceous material in the second geologic formation
- FIG. 1 is a flowchart illustrating a method of intraformation transport of formation water according to embodiments of the invention
- FIG. 2 is a flowchart illustrating a method of interformation transport of formation water according to embodiments of the invention
- FIG. 3 shows a system for intraformation transport of formation water according to embodiments of the invention
- FIG. 4 shows a system for interformation transport of formation water according to embodiments of the invention.
- Fig. 5 is a plot of the percentage of methane in the headspace of a sealed coal container over time for three levels of added formation water.
- Anaerobic formation water is characterized as having little or no dissolved oxygen, in general no more than 4mg/L, preferably less than 2mg/L, most preferably less than O.lmg/L, as measured at 20 degrees C and 760mmHg barometric pressure.
- higher levels of dissolved oxygen greater than 4mg/L, can be tolerated without appreciably degrading microorganism performance, for limited times or in certain locations such as a surface layer in a storage or settling tank.
- Dissolved oxygen can be measured by well-known methods, such as by commercially-available oxygen electrodes, or by the well-known Winkler reaction.
- the formation water may be extracted and then reintroduced into the same formation (i.e., intraformation transport), or introduced into a different formation (i.e., interformation transport).
- the formation water may be analyzed to determine the chemical composition of the water, and to ascertain whether microorganisms are present. When microorganisms are present, they may also be identified by genus and/or species.
- the formation water may be amended based on the analysis of the compounds and microorganisms present in the native water. These amendments may include changing the composition of the formation water to enhance the growth of one or more species of the microorganisms present.
- the amendments may include adjusting the microorganism nutrient levels, pH, salinity, oxidation potential (Eh), and/or metal ion concentrations, among other compositional changes to the formation water.
- the amendments may also include filtering and/or processing the formation water to reduce the concentration of one or more chemical and/or biological species.
- intraformation transport may include cycling the formation water through the formation one or more times, where the water may be extracted from the formation, amended, and returned to the formation in a continuous loop process.
- Interformation transport may include, for example, extracting formation water from a first formation and transporting it to a second subterranean formation that has carbonaceous materials, but little or no native formation water and/or microorganisms.
- the aqueous environment introduced to the previously dry second formation creates conditions for microorganism populations to grow and convert the carbonaceous material into hydrogen, smaller hydrocarbons (e.g., butane, propane, methane), and other useful metabolites.
- a flowchart is shown that illustrates a method of intraformation transport of formation water according to embodiments of the invention.
- the method starts with the accessing the formation water 102 in a geologic formation.
- the geologic formation may be a previously explored, carbonaceous material containing, subterranean formation, such as a coal mine, oil field, natural gas deposit, carbonaceous shale, natural gas, etc.
- access to the formation water can involve utilizing previously mined or drilled access points to the formation.
- accessing the formation water may involve digging, or drilling through a surface layer to access the underlying water.
- the formation water may be extracted from the formation 104.
- the extraction may involve bringing the formation water to the surface using one or more hydrologic pumping techniques. These techniques may include pumping the formation water to the surface using a pumping device that harnesses electrical, mechanical, hydraulic, pneumatic, and/or fluid-expansion type forces, among other modes of action.
- the extracted formation water may be analyzed 106 to ascertain information about the chemical and biological composition of the water.
- Chemical analyses may include spectrophotometry, NMR, HPLC, gas chromatography, mass spectrometry, voltammetry, and other instrumentation and chemical tests.
- the tests may determine the presence and concentrations of elements like carbon, phosphorous, nitrogen, sulfur, magnesium, manganese, iron, calcium, zinc, tungsten, and titanium, among others.
- the tests may also detect the presence and concentrations of polyatomic ions, such as PO 4 2" , NH 4 + , NO 2 " , NO 3 " , and SO 4 " , among others.
- Bio analyses may include techniques and instrumentation for detecting genera and/or species of one or more microorganisms present in the formation water. These test may include genus and/or species identification of anaerobes, aerobes, microaerophiles, etc. found in the formation water. Additional details for identifying and isolation genera and species of microorganisms from the formation water are described in commonly assigned U.S. Patent App. No. 11/ , , filed April 5, 2005, and titled
- the formation water may also be amended 108 by, for example, altering one or more physical (e.g., temperature), chemical, or biological characteristics of the water.
- the amendments may include adjustments to the chemical composition of the formation water, including the increase or decrease of a microorganism nutrient level, pH, salinity, oxidation potential (Eh), and/or metal ion concentration, among other chemical species.
- changes in microorganism nutrient levels may include changes in formation water concentration of ammonia nitrite, calcium chloride, magnesium carbonate, sodium nitrate, potassium nitrate, di-sodium hydrogen phosphate, ferric chloride, manganese chloride, zinc chloride, boric acid, copper acetate, sodium molybdate, sodium carbonate, yeast extract, and/or peptone among other nutrients. It may also include changes in nutrient assisting compounds like nitrilotriacetic acid.
- Changes in the biological characteristics of the formation water may include increasing or decreasing the population of one or more genera and/or species of microorganism in the water.
- Genera whose population in the formation water may be controlled include, Thermotoga, Pseudomonas, Gelria, Clostridia, Moorella, Thermoacetogenium, Methanobacter, Bacillus, Geobacillus, Methanosarcina, Methanocorpusculum, Methanobrevibacter, Methanothermobacter, Methanolobus, Methanohalophilus, Methanococcoides, Methanosalsus, Methanosphaera, Granulicatella, Acinetobacter, Fervidobacterium, Anaerobaculum, Ralstonia, Sulfurospirullum, Acidovorax, Rikenella, Thermoanaeromonas, Desulfovibrio, Dechloromonas, Acetogenium, Desulfuromonas,
- the extracted formation water may be reintroduced back into the geologic formation 110.
- the formation water may be reintroduced at or near the location where the water is extracted, or at a position remote from the extraction location.
- the remote position may or may not be in fluid communication with the extraction location ⁇ e.g., a cavity in the formation that is hydraulically sealed from the point where the formation water is extracted).
- the formation water may be maintained in an anaerobic state during the extraction, pumping, transport, storage, etc., by using a closed system throughout and displacing the oxygen present in the system with an inert gas, such as argon, substantially pure nitrogen, and/or helium, among other inert gases.
- the system may also be pressurized with the inert gas to reduce the amount of ambient oxygen that enters the system.
- anaerobic formation water extraction, transport and storage systems may include low pressure pumps (e.g., vein, fin, and/or rotary pumps, which may use needle, ball and/or butterfly valves) that may be submersible in the subterranean formation water deposit.
- the conduits and storage elements of the system may be made of oxygen impermeable and chemically inert materials that minimize the diffusion of free oxygen and other contaminants into the anaerobic formation water.
- these materials may include butyl rubber, viton, glass, copper, steel, and stainless steel, among other materials.
- Fig. 2 shows another flowchart illustrating a method of interformation transport of formation water according to embodiments of the invention. Similar to embodiments of methods of intraformation transport shown in Fig. 1, interformation transport may include accessing the formation water 202 in a first geologic formation, and extracting the water 204 from the first formation. The extracted formation water may be analyzed 206, and amended 208 by altering one or more physical, chemical, and/or biological characteristics of the water.
- the formation water may then be transported to a second geologic formation 210.
- a variety of mechanisms are contemplated for transporting the formation water between the two geologic formations. These include pumping the water through a pipeline that is in fluid communication between the formations. They also include filling containers (e.g., barrels) with formation water and transporting them by vehicle (e.g., car, truck, rail car) to the second formation site. Alternatively, a vehicle designed for the transport of fluids (e.g., a tanker truck, tanker rail car, etc.) may be filled with the formation water at the first formation site and driven (or pulled) to the second formation site.
- containers e.g., barrels
- vehicle e.g., car, truck, rail car
- a vehicle designed for the transport of fluids e.g., a tanker truck, tanker rail car, etc.
- the second geologic formation may be a dry formation, where the formation water is pumped into a cavity, network of channels, etc. having little or no detectable levels of native formation water.
- substantial amounts of native formation water may be present in the second formation, and the water from the first formation is mixed with this native water as it is introduced into the second formation.
- Fig. 3 shows a system 300 for intraformation transport of formation water according to embodiments of the invention.
- the system 300 may include a pump system 302 and amendment system 304 that are positioned on the surface above a subterranean geologic formation 306.
- the geologic formation 306 may include a formation water layer 308 that sits below a liquid hydrocarbon layer 310 (e.g., a crude oil layer), which, in turn, may sit below a gas layer 312 (e.g., a natural gas layer).
- a liquid hydrocarbon layer 310 e.g., a crude oil layer
- a gas layer 312 e.g., a natural gas layer
- a conduit 314 may be inserted into the formation and positioned such that a distal end of conduit 314 receives formation water from layer 308 and transports it to pump 302 on the surface, hi some examples, the conduit 314 may be part of a previous system used to recover hydrocarbons for the formation.
- the pump system 302 used to bring the formation water to the surface may include one or more pumping devices such as dynamic pumping devices, reciprocating displacement pumping devices, and rotary displacement pumping devices, among others.
- Dynamic pumping devices may include centrifugal pumps, such as axial flow centrifugal pumps, mixed flow and/or radial flow pumps, peripheral pumps, and combinations of these pumps.
- Axial flow pumps may include single-stage or multi-stage, closed impeller, open impeller (e.g., fixed-pitch or variable-pitch) and combinations of these pumps.
- Mixed flow and/or radial flow centrifugal pumps may include single suction or double suction, self-priming, non-priming, single-stage, or multi-stage, open-impeller, semiopen-impeller, closed-impeller, and combinations of these types of pumps.
- Peripheral centrifugal pumps may include single-stage or multi-stage, self-priming or non-priming, and combinations of these types of pumps.
- Dynamic pumps may also include jet pumps, gas lift pumps, hydraulic ram pumps, and electromagnetic pumps, among other types of dynamic pumps.
- Reciprocating displacement pumping devices may include piston or plunger pumps, including steam pumps (e.g., simplex, duplex, triplex or multiplex steam pumps). These pumps may also include power pumps (e.g., single-acting or double-acting; simplex, duplex, triplex, multiplex, and combinations of these power pumps). Also included are pumps utilizing check valves, whether fixed, mobile, or a combination of these characteristics, and may further include hinged barriers, mobile balls or mobile pistons of appropriate shape, with associated containment devices. Also included in reciprocating displacement pumping devices are diaphragm pumps, including simplex, duplex and multiplex, fluid-operated, mechanically-operated, and combinations of these type of pumps.
- Rotary displacement pumping devices include pumps equipped with a single rotor, including vane, piston, flexible member, screw and peristaltic pumps. These pumps may also include pumps equipped with multiple rotors, including gear, lobe, circumferential piston, and screw pumps.
- At least part of pump system 302 may be submerged in a pool of formation water in a subterranean formation.
- the submerged pump may agitate the formation water, causing dissolved methane and other gases to be released and rise to the top of the formation.
- the pump system 302 may include a gas collection system (not shown) at the well head to transport the released gases out of the formation.
- the analysis components of the system 304 may include chemical and biological measurement instrumentation (not shown) used to provide data on the chemical and biological composition of the formation water.
- the system 304 may also include components and equipment to change the physical, chemical and biological composition of the formation water.
- the system 304 may include components to increase or decrease the temperature of the water.
- the system may also include components and equipment to filter the formation water to remove selected chemical and/or biological species. Descriptions of systems and method for filtering formation water can be found in co-assigned PCT Patent Application No.
- the amendment system 304 may also include components for increasing or decreasing a microorganism nutrient level, pH, salinity, oxidation potential (Eh), and/or metal ion concentration, among other chemical changes to the water.
- Formation water passing through the pump system 302 and amendment system 304 may then be transported thorough pipeline 315 back into the formation 306.
- the formation water is reintroduced into the same formation water layer 308, but at a different point from where the water was originally extracted.
- the formation water may be introduced back into the formation at another layer, such as where an end of the conduit 316 opens to the gas layer 312.
- the System 400 include a pump system 402 and amendment system 404 positioned above a first geologic formation 406. Formation water may be extracted by pump system 402 from a formation water layer 408 through conduit 414, and analyzed and amended in amendment system 404. The amended formation water may then be loaded into vehicle 418 which can travel between the first formation 406 and the second geologic formation 420.
- vehicle 418 When vehicle 418 is filled with formation water it can travel to pumping system 422 positioned above the second formation 420.
- An outlet (not shown) on vehicle 418 may be leaktightly connected to the pump unit 422 and the formation water may be delivered to a subterranean cavity 424 above a hydrocarbon bed 426, in the second formation 420, via conduit 428.
- the vehicle 418 may include pumping equipment on-board to pump the formation water into the cavity 424, without the use of an on-site pumping system 422.
- the vehicle 418 may be replaced by a transport pipeline (not shown) that transports the formation water directly between the first and second formations 408 and 420.
- Fig. 5 clearly demonstrates that the addition of formation water stimulates the production of methane from the coal samples. Additional radiocarbon labeling studies provided strong evidence that the methane was being biogenically produced. Thus, this experiment shows that formation water can stimulate the biogenic production of methane from carbonaceous substrates like coal.
- the Experiment shows that the addition of the formation water increased the percentage of methane nearly three-fold in about 150 days.
- the present invention contemplates systems and methods for amending and transporting formation water to carbonaceous materials in formations on commercial scales. A proportional scaling of the resulting increase in methane production will make these formations, which include dormant oil and coal fields, commercially viable sources of methane, hydrogen, and other metabolites from the microbial digestion of carbonaceous substrates.
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Hydrogen, Water And Hydrids (AREA)
- Liquid Carbonaceous Fuels (AREA)
- Water Treatment By Sorption (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Description
Claims
Priority Applications (13)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP05745267A EP1888876A4 (en) | 2005-05-03 | 2005-05-03 | Biogenic fuel gas generation in geologic hydrocarbon deposits |
| NZ563868A NZ563868A (en) | 2005-05-03 | 2005-05-03 | Biogenic fuel gas generation in geologic hydrocarbon deposits |
| AU2005331308A AU2005331308B2 (en) | 2005-05-03 | 2005-05-03 | Biogenic fuel gas generation in geologic hydrocarbon deposits |
| CA2611434A CA2611434C (en) | 2005-05-03 | 2005-05-03 | Biogenic fuel gas generation in geologic hydrocarbon deposits |
| PCT/US2005/015259 WO2006118570A1 (en) | 2005-05-03 | 2005-05-03 | Biogenic fuel gas generation in geologic hydrocarbon deposits |
| US11/343,429 US7426960B2 (en) | 2005-05-03 | 2006-01-30 | Biogenic fuel gas generation in geologic hydrocarbon deposits |
| US12/129,441 US7845403B2 (en) | 2005-05-03 | 2008-05-29 | Biogenic fuel gas generation in geologic hydrocarbon deposits |
| US12/136,728 US7640978B2 (en) | 2005-05-03 | 2008-06-10 | Biogenic fuel gas generation in geologic hydrocarbon deposits |
| US12/651,793 US8051908B2 (en) | 2005-05-03 | 2010-01-04 | Biogenic fuel gas generation in geologic hydrocarbon deposits |
| US12/840,909 US7975762B2 (en) | 2005-05-03 | 2010-07-21 | Biogenic fuel gas generation in geologic hydrocarbon deposits |
| US13/173,140 US8302683B2 (en) | 2005-05-03 | 2011-06-30 | Biogenic fuel gas generation in geologic hydrocarbon deposits |
| US13/607,909 US8794315B2 (en) | 2005-05-03 | 2012-09-10 | Biogenic fuel gas generation in geologic hydrocarbon deposits |
| US14/446,157 US9434872B2 (en) | 2005-05-03 | 2014-07-29 | Biogenic fuel gas generation in geologic hydrocarbon deposits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US2005/015259 WO2006118570A1 (en) | 2005-05-03 | 2005-05-03 | Biogenic fuel gas generation in geologic hydrocarbon deposits |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US11/343,429 Continuation-In-Part US7426960B2 (en) | 2005-05-03 | 2006-01-30 | Biogenic fuel gas generation in geologic hydrocarbon deposits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006118570A1 true WO2006118570A1 (en) | 2006-11-09 |
Family
ID=37308261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US2005/015259 Ceased WO2006118570A1 (en) | 2005-05-03 | 2005-05-03 | Biogenic fuel gas generation in geologic hydrocarbon deposits |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1888876A4 (en) |
| AU (1) | AU2005331308B2 (en) |
| CA (1) | CA2611434C (en) |
| WO (1) | WO2006118570A1 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071933A (en) * | 2010-11-13 | 2011-05-25 | 中国石油化工股份有限公司 | Method and device for sampling produced fluid of oil reservoir for microbial flooding |
| US7975762B2 (en) | 2005-05-03 | 2011-07-12 | Luca Technologies, Inc. | Biogenic fuel gas generation in geologic hydrocarbon deposits |
| WO2011159919A2 (en) | 2010-06-16 | 2011-12-22 | Conocophillips Company | In situ methanogenesis modeling and risk analysis |
| US8479813B2 (en) | 2009-12-16 | 2013-07-09 | Luca Technologies, Inc. | Biogenic fuel gas generation in geologic hydrocarbon deposits |
| US9004162B2 (en) | 2012-03-23 | 2015-04-14 | Transworld Technologies Inc. | Methods of stimulating acetoclastic methanogenesis in subterranean deposits of carbonaceous material |
| US9102953B2 (en) | 2009-12-18 | 2015-08-11 | Ciris Energy, Inc. | Biogasification of coal to methane and other useful products |
| US9255472B2 (en) | 2008-07-02 | 2016-02-09 | Ciris Energy, Inc. | Method for optimizing in-situ bioconversion of carbon-bearing formations |
| CN108425662A (en) * | 2018-02-09 | 2018-08-21 | 河南工程学院 | A kind of microorganism displacement gas experimental rig and test method |
| US12416024B2 (en) | 2018-03-29 | 2025-09-16 | Transworld Technologies Inc. | Biologically enhanced oil recovery methods |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6265205B1 (en) * | 1998-01-27 | 2001-07-24 | Lynntech, Inc. | Enhancement of soil and groundwater remediation |
| US20030209340A1 (en) * | 2000-02-15 | 2003-11-13 | Mcclung Guy L. | Microorganism enhancement with earth loop heat exchange systems |
-
2005
- 2005-05-03 EP EP05745267A patent/EP1888876A4/en not_active Ceased
- 2005-05-03 WO PCT/US2005/015259 patent/WO2006118570A1/en not_active Ceased
- 2005-05-03 CA CA2611434A patent/CA2611434C/en not_active Expired - Lifetime
- 2005-05-03 AU AU2005331308A patent/AU2005331308B2/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6265205B1 (en) * | 1998-01-27 | 2001-07-24 | Lynntech, Inc. | Enhancement of soil and groundwater remediation |
| US20030209340A1 (en) * | 2000-02-15 | 2003-11-13 | Mcclung Guy L. | Microorganism enhancement with earth loop heat exchange systems |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP1888876A4 * |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8794315B2 (en) | 2005-05-03 | 2014-08-05 | Transworld Technologies Inc. | Biogenic fuel gas generation in geologic hydrocarbon deposits |
| US7975762B2 (en) | 2005-05-03 | 2011-07-12 | Luca Technologies, Inc. | Biogenic fuel gas generation in geologic hydrocarbon deposits |
| US8051908B2 (en) | 2005-05-03 | 2011-11-08 | Luca Technologies, Inc. | Biogenic fuel gas generation in geologic hydrocarbon deposits |
| US9434872B2 (en) | 2005-05-03 | 2016-09-06 | Transworld Technologies Inc. | Biogenic fuel gas generation in geologic hydrocarbon deposits |
| US8302683B2 (en) | 2005-05-03 | 2012-11-06 | Luca Technologies, Inc. | Biogenic fuel gas generation in geologic hydrocarbon deposits |
| US9255472B2 (en) | 2008-07-02 | 2016-02-09 | Ciris Energy, Inc. | Method for optimizing in-situ bioconversion of carbon-bearing formations |
| US8479813B2 (en) | 2009-12-16 | 2013-07-09 | Luca Technologies, Inc. | Biogenic fuel gas generation in geologic hydrocarbon deposits |
| EP2513419A4 (en) * | 2009-12-16 | 2016-04-13 | Transworld Technologies Ltd | Biogenic fuel gas generation in geologic hydrocarbon deposits |
| US9102953B2 (en) | 2009-12-18 | 2015-08-11 | Ciris Energy, Inc. | Biogasification of coal to methane and other useful products |
| WO2011159919A2 (en) | 2010-06-16 | 2011-12-22 | Conocophillips Company | In situ methanogenesis modeling and risk analysis |
| CN102071933A (en) * | 2010-11-13 | 2011-05-25 | 中国石油化工股份有限公司 | Method and device for sampling produced fluid of oil reservoir for microbial flooding |
| US9004162B2 (en) | 2012-03-23 | 2015-04-14 | Transworld Technologies Inc. | Methods of stimulating acetoclastic methanogenesis in subterranean deposits of carbonaceous material |
| CN108425662A (en) * | 2018-02-09 | 2018-08-21 | 河南工程学院 | A kind of microorganism displacement gas experimental rig and test method |
| CN108425662B (en) * | 2018-02-09 | 2020-01-03 | 河南工程学院 | Microbial displacement gas test device and test method |
| US12416024B2 (en) | 2018-03-29 | 2025-09-16 | Transworld Technologies Inc. | Biologically enhanced oil recovery methods |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1888876A4 (en) | 2009-07-29 |
| AU2005331308A1 (en) | 2006-11-09 |
| EP1888876A1 (en) | 2008-02-20 |
| CA2611434C (en) | 2012-12-11 |
| AU2005331308B2 (en) | 2011-04-14 |
| CA2611434A1 (en) | 2006-11-09 |
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