Patents by Inventor Alfred Olvera
Alfred Olvera 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).
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Patent number: 10458198Abstract: Embodiments of the present disclosure include a test dart for wellbore pressure isolation. The test dart includes a body extending from a first end to a second end, the body having a bore extending therethrough, a diameter of the bore being greater at a first end than the second end. The test dart also includes a groove formed proximate the first end and extending radially outward from the bore and into the body. Additionally, the test dart includes an anti-rotation pin positioned between the groove and the second end, the anti-rotation pin extending radially outward from the body. The test dart further includes a check valve positioned in the bore, the check valve enabling flow in a single direction and being moveable between an open position to enable the flow and a closed position to block the flow.Type: GrantFiled: August 7, 2017Date of Patent: October 29, 2019Assignee: GE Oil & Gas Pressure Control LPInventors: Detrick Deyon Garner, Alfred Olvera, Eugene Borak, Jason Armistead, Samuel Cheng, John Warner, Nathan Burcham
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Publication number: 20190040709Abstract: Embodiments of the present disclosure include a test dart for wellbore pressure isolation. The test dart includes a body extending from a first end to a second end, the body having a bore extending therethrough, a diameter of the bore being greater at a first end than the second end. The test dart also includes a groove formed proximate the first end and extending radially outward from the bore and into the body. Additionally, the test dart includes an anti-rotation pin positioned between the groove and the second end, the anti-rotation pin extending radially outward from the body. The test dart further includes a check valve positioned in the bore, the check valve enabling flow in a single direction and being moveable between an open position to enable the flow and a closed position to block the flow.Type: ApplicationFiled: August 7, 2017Publication date: February 7, 2019Applicant: GE Oil & Gas Pressure Control LPInventors: Detrick Deyon Garner, Alfred Olvera, Eugene Borak, Jason Armistead, Samuel Cheng, John Warner, Nathan Burcham
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Patent number: 9291023Abstract: A casing head assembly for landing on a stem head of a floating structure can include a stem head adapter assembly that includes a ring shaped stem head adapter plate. A solid upper ring is spaced axially above the stem head adapter plate, defining an adapter gap between the upper ring and the stem head adapter plate. At least one load cell can have a first end that is supported by the stem head adapter plate and a second end that engages the upper ring. At least one piston assembly is selectively secured to the upper ring. The casing head assembly also includes a casing head landed on, and secured to, the upper ring of the stem head adapter assembly. The load cell is selectively constrained between the upper ring and the stem head adapter plate by a load on the casing head.Type: GrantFiled: October 30, 2014Date of Patent: March 22, 2016Assignee: GE Oil & Gas Pressure Control LPInventors: Mark Anthony McGilvray, Jr., Alfred Olvera, Gajanan B. Hegde, Keith M. Adams
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Publication number: 20150114661Abstract: A casing head assembly for landing on a stem head of a floating structure can include a stem head adapter assembly that includes a ring shaped stem head adapter plate. A solid upper ring is spaced axially above the stem head adapter plate, defining an adapter gap between the upper ring and the stem head adapter plate. At least one load cell can have a first end that is supported by the stem head adapter plate and a second end that engages the upper ring. At least one piston assembly is selectively secured to the upper ring. The casing head assembly also includes a casing head landed on, and secured to, the upper ring of the stem head adapter assembly. The load cell is selectively constrained between the upper ring and the stem head adapter plate by a load on the casing head.Type: ApplicationFiled: October 30, 2014Publication date: April 30, 2015Inventors: Mark Anthony McGilvray, JR., Alfred Olvera, Gajanan B. Hegde, Keith M. Adams
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Publication number: 20140131954Abstract: Shrinkage compensated seal assemblies and methods of compensating for shrinkage of a seal due to temperature variations, are provided. According to an exemplary shrinkage compensated seal assembly, the assembly includes a seal, a first compression member for engaging the upper surface of the seal, a second compression member for engaging the lower surface of the seal, and a plurality of pin members each having an elongate body and a head portion. The elongate body of each separate one of the plurality of pin members slidably extends through a different one of a plurality of sets of apertures in the first compression member, the seal, and the second compression member to provide for maintaining a substantially constant pressure on the seal at given pressure under varying temperature conditions that result in variations in the volume size of the seal.Type: ApplicationFiled: November 12, 2012Publication date: May 15, 2014Applicant: VETCO GRAY INC.Inventors: Bashir Mohammad Koleilat, Alfred Olvera, Aman Al-Akkad, Jim Hwang, Saurabh Kajaria, Gajanan Hegde
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Patent number: 8690121Abstract: An assembly for actuating a valve that is in a differential screw assembly when the valve is in a portion of its stroke that experiences high resistance. The actuating assembly is selectively changeable into a direct drive configuration when the valve is in a lower resistance portion of its stroke. A sliding sleeve moves axially within the actuating assembly and has a profile that is strategically dimensioned to change the actuating assembly configuration.Type: GrantFiled: March 30, 2011Date of Patent: April 8, 2014Assignee: Vetco Gray Inc.Inventors: Alfred Olvera, Mahesha Udipi, Raymond Krolczyk
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Publication number: 20140000907Abstract: A valve assembly for use in regulating a fracturing fluid that includes an actuating stem for actuating a gate, a balancing stem, and a backseat on the stem that defines a backseat seal when urged against a profile in the valve assembly. The backseat seal is energized by applying a force to an end of the balancing stem. An end of the balancing stem is enclosed within a plenum, so that the force on an end of the balancing stem can be applied by pressurizing the plenum. The assembly can be on an opposite side of the valve body/bonnet to create a backseat seal on a balancing stem/bonnet to allow changing the stem packing on the balance stem side while maintaining pressure integrity.Type: ApplicationFiled: June 28, 2012Publication date: January 2, 2014Applicant: VETCO GRAY INC.Inventors: Alfred Olvera, Mahesha Udipi, Mark A. Viator, Jim Hwang
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Patent number: 8297366Abstract: A system for supporting tubing with an installable load shoulder. The system includes a wellhead formed with an enlarged first circumferential groove in the wall of the vertical bore of the wellhead, and a second circumferential groove extending upwardly or downwardly from the first circumferential groove. At least one opening is formed in communication with the second circumferential groove. An annular load shoulder is received within the first circumferential groove, and has an inner surface adapted to support a tubing hanger. The load shoulder is formed from at least three arc-shaped shoulder segments adapted to be received within the first circumferential groove. At least one of the shoulder segments has an engagement member configured to pass through the opening to be received within the second circumferential groove. Rotating the load shoulder such that the engagement member is out of alignment with the opening secures the load shoulder within the wellhead.Type: GrantFiled: April 16, 2010Date of Patent: October 30, 2012Assignee: Stream-Flo Industries Ltd.Inventors: Alfred Olvera, Heinrich Lang
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Publication number: 20120248360Abstract: An assembly for actuating a valve that is in a differential screw assembly when the valve is in a portion of its stroke that experiences high resistance. The actuating assembly is selectively changeable into a direct drive configuration when the valve is in a lower resistance portion of its stroke. A sliding sleeve moves axially within the actuating assembly and has a profile that is strategically dimensioned to change the actuating assembly configuration.Type: ApplicationFiled: March 30, 2011Publication date: October 4, 2012Applicant: VETCO GRAY INC.Inventors: Alfred Olvera, Mahesha Udipi, Raymond Krolczyk
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Publication number: 20120205111Abstract: A reinforced wellhead member for use during fracing operations. The wellhead member is preloaded at a flange section by creating compressive stresses via a ring that interacts with a tightening nut on a bolt. The bolt is rigidly attached to an adapter which may also be modified to create stresses on the flange of the wellhead member. The induced stresses counter the tensile stresses experienced by the flange during fracing operations, allowing a standard wellhead member to be utilized.Type: ApplicationFiled: February 10, 2011Publication date: August 16, 2012Applicant: VETCO GRAY INC.Inventors: Mahesha Udipi, Alfred Olvera, Jim Hwang, Jean Brunjes, Eugene Borak
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Publication number: 20100263877Abstract: A system for supporting tubing with an installable load shoulder. The system includes a wellhead formed with an enlarged first circumferential groove in the wall of the vertical bore of the wellhead, and a second circumferential groove extending upwardly or downwardly from the first circumferential groove. At least one opening is formed in communication with the second circumferential groove. An annular load shoulder is received within the first circumferential groove, and has an inner surface adapted to support a tubing hanger. The load shoulder is formed from at least three arc-shaped shoulder segments adapted to be received within the first circumferential groove. At least one of the shoulder segments has an engagement member configured to pass through the opening to be received within the second circumferential groove. Rotating the load shoulder such that the engagement member is out of alignment with the opening secures the load shoulder within the wellhead.Type: ApplicationFiled: April 16, 2010Publication date: October 21, 2010Applicant: Stream-Flo Industries Ltd.Inventors: Alfred Olvera, Heinrich Lang