Patents Assigned to Produced Water Development, LLC
  • Publication number: 20120103905
    Abstract: A microfiltration method and system for treating production water, for example, from oil and gas operations so that the treated water can be put to a beneficial user(s) such as agriculture, irrigation, industrial or municipal or potable applications. The production water is treated using a ceramic microfilter after pretreatment, for example, to remove volatile hydrocarbons and heavier oils, such as paraffins and asphaltenes, that could foul the ceramic filter. The effluent from the ceramic microfiltration can be further treated, for example, with activated charcoal or otherwise for the intended end use.
    Type: Application
    Filed: January 12, 2012
    Publication date: May 3, 2012
    Applicant: PRODUCED WATER DEVELOPMENT, LLC
    Inventor: David Rakestraw Stewart
  • Patent number: 8097163
    Abstract: A method and system for purifying production water obtained from oil and gas operations so that the purified water need not be disposed of by forced injection back into the geological formation but can be put to a beneficial use such as agriculture, irrigation, industrial or municipal or potable applications. The production water is treated in a ceramic microfilter after it has been pretreated (preferably by aeration and with a walnut shell filter) to remove volatile hydrocarbons and heavier oils, such as paraffins and asphaltenes, that could foul the ceramic filter. The permeate from the ceramic microfiltration can then be treated with activated charcoal or otherwise treated to meet the specific requirements for the intended beneficial use.
    Type: Grant
    Filed: April 6, 2007
    Date of Patent: January 17, 2012
    Assignee: Produced Water Development, LLC
    Inventors: David R. Stewart, Lawrence Y. C. Leong
  • Publication number: 20090204419
    Abstract: A method for generating new water with attached water rights comprising identifying a source of production water and treating the water in appropriate ways to provide water appropriate for beneficial use such as agriculture, irrigation, industrial or municipal or potable applications. Appropriate permits are obtained to create the new water with attached water rights.
    Type: Application
    Filed: April 9, 2009
    Publication date: August 13, 2009
    Applicant: Produced Water Development, LLC
    Inventor: David Rakestraw Stewart