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Применить Всего найдено 9. Отображено 8.
11-10-2016 дата публикации

Staged bacteriophage remediation of target bacteria

Номер: US0009464267B2
Автор: Elizabeth J. Summer, Mei Liu, Neil S. Summer, Douglas Baldwin, SUMMER ELIZABETH J, LIU MEI, SUMMER NEIL S, BALDWIN DOUGLAS, Summer Elizabeth J., Liu Mei, Summer Neil S., Baldwin Douglas
Принадлежит: Dow Global Technologies LLC, DOW GLOBAL TECHNOLOGIES LLC

A process for remediation of target bacteria, particularly sulfur reducing bacteria (SRB), in waters (“target water”) having a multiplicity and diverse host target bacteria by employing serial or staged bacteria culturing and lysing of dominant bacteria. Remediation of sulfur reducing bacteria (SRB) is effected by application of a series of bacteriophage isolated from the staged culturing and bacteriophage lysing of successive aliquots of waters containing a multiplicity of SRB.

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Номер записи: 1
16-05-2017 дата публикации

Prevention and remediation of petroleum reservoir souring and corrosion by treatment with virulent bacteriophage

Номер: US0009650272B2
Автор: Elizabeth J. Summer, Mei Liu, Neil S. Summer, Douglas Baldwin, SUMMER ELIZABETH J, LIU MEI, SUMMER NEIL S, BALDWIN DOUGLAS, Summer Elizabeth J., Liu Mei, Summer Neil S., Baldwin Douglas
Принадлежит: DOW GLOBAL TECHNOLOGIES LLC, Dow Global Technologies LLC

There is provided a safe, natural, environmentally sound means of controlling bacterial contamination, corrosion, and souring of oil and gas wells and reservoirs that result from bacteria-contaminated water in a well. In one aspect it is a process for remediation of souring of petroleum reservoirs and coalbeds by adding to the water used in flooding and “fracing” operations an effective amount of virulent (non-lysogenic) bacteriophages (phages) specific for problematic target bacteria. The invention also provides a means for combating loss of effectiveness of bacterial control by staging bacteriophage production and application to control dominant and sub-dominant target bacteria in a community of target bacteria.

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Номер записи: 2
16-02-2012 дата публикации

Use of Prokaryote Viruses to Remediate Bio-Fouling

Номер: US20120040439A1
Автор: Baldwin Douglas, Campbell Scott, Liu Mei, Summer Neil S.
Принадлежит: PHAGE BIOCONTROL RESEARCH, LLC

This invention provides a process for control in oil and gas wells and related facilities of prokaryote caused souring, fouling and corrosion by reduction of problematic prokaryotes with naturally occurring lysing organisms, particularly sulfate-reducing prokaryotes by proliferating suitable virulent lysing organisms under conditions in which problematic prokaryotes thrive, including in a gas production wellbore. The process provides in situ proliferation of virulent lysing organism in a wellbore by providing both virulent lysing organisms and their host prokaryotes to selectively grow an effective control amount and concentrations of lysing organisms in a well formation. 1. A method of remediating sulfate-reducing prokaryotes (SRP) in oil and gas geological formations comprising introducing into a wellbore in a formation a combination of sulfate-reducing prokaryotes (SRP) and lysing organisms virulent for said sulfate-reducing prokaryotes (SRP) in sufficient amount and concentration to cause the bacteriophage to replicate by lysing said sulfate-reducing prokaryotes (SRP).2. The method of wherein the sulfate-reducing prokaryotes comprise sulfate-reducing bacteria and sulfate-reducing Archaea.3. The method of wherein a mixture of sulfate prokaryotes and matching virulent lysing organisms are introduced into a well bore before hyrofracturing water is pumped in.4. The method of wherein the sulfate-reducing prokaryotes are recovered from water produced from the wellbore or from a similar wellbore.5. The method of wherein the prokaryotes and lysing organisms are recovered by sequential tangential flow filtration.6. The method of wherein the prokaryotes are first recovered from the water followed by recovery of the virulent lysing organisms.7. The method of wherein the prokaryotes are bacteria and the lysing organism are bacteriophage.8. The method of wherein the prokaryotes are archaea and the lysing organism are archaeal viruses.9. The method of wherein the sulfate- ...

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Номер записи: 3
06-03-2014 дата публикации

Prevention and Remediation of Petroleum Reservoir Souring and Corrosion by Treatment with Virulent Bacteriophage

Номер: US20140061123A1
Автор: Baldwin Douglas, Liu Mei, Summer Elizabeth J., Summer Neil S.
Принадлежит:

There is provided a safe, natural, environmentally sound means of controlling bacterial contamination, corrosion, and souring of oil and gas wells and reservoirs that result from bacteria-contaminated water in a well. In one aspect it is a process for remediation of souring of petroleum reservoirs and coalbeds by adding to the water used in flooding and “fracing” operations an effective amount of virulent (non-lysogenic) bacteriophages (phages) specific for problematic target bacteria. The invention also provides a means for combating loss of effectiveness of bacterial control by staging bacteriophage production and application to control dominant and sub-dominant target bacteria in a community of target bacteria. 1. A process for remediation of souring of oil , gas and coalbed geological reservoirs comprising adding to the water used in a hydrofracturing or flooding operation an effective amount of virulent bacteriophage derived from non-lysogenic bacteria and specific for target bacteria , the target bacteria comprising acid producing bacteria and sulfate reducing bacteria.2. The process of wherein the virulent bacteriophage comprises a multi-panel of virulent bacteriophages claim 1 , each having at least two bacteriophages virulent for each species of target bacteria.3. The process of wherein the effective amount of bacteriophage comprise bacteriophage indigenous to the general location where it is to be applied to remediate reservoir souring.4. The process of wherein the first solution of bacteriophage has a concentration of bacteriophage of about 1×10to 1×10.5. The process of wherein target bacteria(s) comprise sulfate reducing bacteria claim 1 , sulfur-oxidizing bacteria capable of generating sulfuric acid claim 1 , and iron-oxidizing bacteria.6. The process of comprising;{'sup': '5', 'providing a water pond or storage tanks or tanks, adding a solutions of bacteriophages virulent for target bacteria to the pond or storage tank solution to at least 1×10pfu/ml ...

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Номер записи: 4
17-04-2014 дата публикации

PROCESS FOR REDUCING BIO-CORROSION IN WATER SYSTEMS

Номер: US20140102975A1
Автор: Baldwin Douglas, Summer Elizabeth J., Summer Neil S.
Принадлежит:

Bacterial contamination of industrial water systems lead to bacterial induced corrosion. This invention provides a method for control of corrosion of industrial water systems caused by bacteria by the destruction of targeted problematic bacteria with naturally occurring, non-engineered bacteriophage virulent for targeted bacteria. The invention also provides a staged sequencing of control to adapt to changing conditions. 1. A process for reducing bio-corrosion in an industrial water system containing a multiplicity of target bacteria comprising:culturing a dominant group of bacteria in a mixed bacteria solution, isolating virulent phage(s) for the dominate a bacteria, lysing dominant bacteria from a sample of the mixed bacteria solution to remove the dominant bacteria from the mix;culturing the next dominant strain from the solution with the dominate strain lysed, isolating a virulent phage for the next dominate bacteria, lysing it to remove the next dominate bacteria; andcontinuing the sequence to provide a set of bacteriophage that will lyse the dominate and sub-dominate bacteria;applying an effective amount of the bacteriophage so isolated in each step either as a mixture or in sequence application to the water system containing a mixture of target bacteria of those found in each step of the above sequence.2. The process of wherein target bacteria(s) comprise sulfate reducing bacteria claim 1 , sulfur-oxidizing bacteria capable of generating sulfuric acid claim 1 , and iron-oxidizing bacteria.3. The process of comprising the culturing of bacteria in the sequence is conducted at simulated conditions substantially approximating the conditions of use of or collection of the virulent phage.4. The process of wherein of the simulated conditions comprise temperature claim 1 , oxygen level and salinity.5. A process for reduction of bio-corrosion in an industrial water system containing a multiplicity of target bacteria containing a multiplicity of target bacteria ...

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Номер записи: 5
18-09-2014 дата публикации

Staged Bacteriophage Remediation of Target Bacteria

Номер: US20140273159A1
Автор: Douglas Baldwin, Elizabeth J. Summer, Mei Liu, Neil S. Summer
Принадлежит: Douglas Baldwin, Elizabeth J. Summer, Mei Liu, Neil S. Summer

A process for remediation of target bacteria, particularly sulfur reducing bacteria (SRB), in waters (“target water”) having a multiplicity and diverse host target bacteria by employing serial or staged bacteria culturing and lysing of dominant bacteria. Remediation of sulfur reducing bacteria (SRB) is effected by application of a series of bacteriophage isolated from the staged culturing and bacteriophage lysing of successive aliquots of waters containing a multiplicity of SRB.

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Номер записи: 6
14-07-2011 дата публикации

Prevention and Remediation of Petroleum Reservoir Souring and Corrosion by Treatment with Virulent Bacteriophage

Номер: US20110171719A1
Автор: Douglas Baldwin, Neil S. Summer
Принадлежит: Douglas Baldwin, Summer Neil S

Petroleum reservoir souring, caused by microbially induced production of hydrogen sulfide and other sulfur compounds, and the attendant corrosion are remediated by isolating bacteriophage(s) specific for the problematic bacteria (target bacteria) and adding an effective amount of such bacteriophage(s) to water introduced into or resident in the reservoir to kill at least some of the target bacteria. Suitable virulent bacteriophage(s) may be indigenous to the water, located in surrounding areas, or taken from a known banked stock. Means of concentrating solutions of bacteriophage(s) are also disclosed.

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Номер записи: 7
16-02-2012 дата публикации

Process For Continuous Production Of Bacteriophage

Номер: US20120040329A1
Автор: Douglas Baldwin, Neil S. Summer
Принадлежит: Phage Biocontrol Res LLC

As bacteriophage use in industrial application grows there is a need for commercial quantities of identified bacteriophage. This invention discloses a continuous flow bacteriophage proliferation process that can provide commercial quantities of desired bacteriophage in concentrations suitable for industrial use. Host bacteria and virulent bacteriophage are fed into a reactor vessel where the phage attach to, infect and lyse the host bacteria providing multiple replications of it and coincidentally concentrating the phage.

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Номер записи: 8