Patents by Inventor John S. Sladic

John S. Sladic has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20150226040
    Abstract: A gravel pack assembly for a borehole has first and second joints and a foil. The basepipes of the joints connect end-to-end, and both of the basepipes having filters for filtering fluid passage from a borehole into bores of the basepipes. Transport tubes are disposed along the first and second joint, and a jumper tube expands across the connected ends of the basepipes and connects the transport tubes together. The foil encloses an area across the connected ends. The foil has an external surface defining an annulus thereabout with the borehole. The foil has end rings abutting the filters of the joints. At least a section of the foil leaks fluid from the borehole to the area enclosed by the foil, and at least a filter portion of the assembly filters the leaked fluid from the area to at least one of the first and second bores.
    Type: Application
    Filed: January 22, 2015
    Publication date: August 13, 2015
    Inventors: Stephen McNamee, John S. Sladic, Stephen Reid, Andrew McGeoch, Matthew Manning, Daniel G. Purkis
  • Patent number: 9027642
    Abstract: A dual-purpose tool can be used for steam injection and production in a wellbore. A mandrel deploys in the wellbore to communicate steam in a steam injection operation and to communicate production fluid from the wellbore during production operations. A distributor on the mandrel has nozzles for injecting steam into the wellbore and has production valves for producing fluids from the wellbore. A screen can be used to screen production fluids as they are produced through the production valves. The nozzles can also allows produced fluids to flow into the mandrel, or backflow valves can be used to restrict flow of produced fluids through the nozzles while permitting the flow of steam out of the nozzles.
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: May 12, 2015
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: John S. Sladic, Brian Sternaman, Christopher Hall
  • Publication number: 20140262322
    Abstract: A completion joint 100 has two sand control jackets 120A-B connected on each end of an intermediately-mounted inflow control device 130. Both jackets 120A-B communicate with a housing chamber 155 through dedicated open end-rings 140A-B. The basepipe's flow openings 118 are isolated from this housing chamber 155 by a sleeve 160 fitted with flow ports 170. The housing 150 is removable to allow access to the flow ports 170 for pinning to configure the ports 170 open or closed for a given implementation.
    Type: Application
    Filed: February 24, 2014
    Publication date: September 18, 2014
    Inventors: Charles S. Yeh, Tracy J. Moffett, John S. Sladic, Christopher A. Hall, Stephen McNamee
  • Publication number: 20140262260
    Abstract: A sand control device is used for restricting the flow of particles from a subsurface formation into a tubular body within a wellbore during production operations. The sand control device is divided into compartments along its length that provide redundancy for particle filtration. Each compartment first comprises a base pipe. The base pipe defines an elongated tubular body having a permeable section and an impermeable section within each compartment. Each compartment also comprises a first filtering conduit and a second filtering conduit. The filtering conduits comprise filtering media and generally circumscribe the base pipe. The filtering conduits are arranged so that the first filtering conduit is adjacent to the non-permeable section of the base pipe, while the second filtering conduit is adjacent to the permeable section of the base pipe.
    Type: Application
    Filed: February 24, 2014
    Publication date: September 18, 2014
    Inventors: Christian S. Mayer, Charles S. Yeh, David A. Howell, Pavlin B. Entchev, Eric R. Grueschow, Ted A. Long, Tracy J. Moffett, Michael D. Barry, Michael T. Hecker, John S. Sladic, Christopher A. Hall, Stephen McNamee
  • Publication number: 20140238657
    Abstract: A gravel pack apparatus for a wellbore has a shunt tube disposed along the apparatus near a wellscreen. The shunt tube is typically composed of stainless steel and has an internal passage for conducting slurry. Along its length, the tube has flow ports for passing the conducted slurry into the wellbore. The exit ports can use erosion inserts composed of erodible material, barrier inserts having breakable barriers, flow nozzles with external sheaths or caps, erosion-resistant bushings disposed on the flow nozzles, etc. The tube can also include a tube body having the exit ports and flow nozzles integrally formed thereon. The tube body can couple end-to-end with sections of shunt tube.
    Type: Application
    Filed: February 26, 2014
    Publication date: August 28, 2014
    Applicant: Weatherford/Lamb, Inc.
    Inventors: John S. Sladic, Stephen McNamee, John Broussard, Christopher A. Hall, Floyd R. Simonds
  • Publication number: 20130319664
    Abstract: A completion joint 100 has a sand control jacket 120 and an inflow control device 130. The jacket 120 communicates screened fluid with a housing of the inflow control device 130. The basepipe's flow openings 118 are isolated in the housing from the screened fluid by flow devices 170. The flow devices 170 are externally accessible on the device's housing to selectively configure the flow devices 170 open or closed.
    Type: Application
    Filed: May 31, 2012
    Publication date: December 5, 2013
    Applicant: WEATHERFORD/LAMB, INC.
    Inventors: Stephen McNamee, John S. Sladic
  • Publication number: 20120298356
    Abstract: A dual-purpose tool can be used for steam injection and production in a wellbore. A mandrel deploys in the wellbore to communicate steam in a steam injection operation and to communicate production fluid from the wellbore during production operations. A distributor on the mandrel has nozzles for injecting steam into the wellbore and has production valves for producing fluids from the wellbore. A screen can be used to screen production fluids as they are produced through the production valves. The nozzles can also allows produced fluids to flow into the mandrel, or backflow valves can be used to restrict flow of produced fluids through the nozzles while permitting the flow of steam out of the nozzles.
    Type: Application
    Filed: May 25, 2011
    Publication date: November 29, 2012
    Applicant: WEATHERFORD/LAMB, INC.
    Inventors: John S. Sladic, Brian Sternaman, Christopher Hall