Patents by Inventor Rogerio T. Ramos
Rogerio T. Ramos 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: 7854267Abstract: The present invention comprises a system and methods to actuate downhole tools by transmitting an optical signal through an optical fiber to the downhole tool. The optical signal can comprise a specific optical signal frequency, signal, wavelength or intensity. The downhole tool can comprise packers, perforating guns, flow control valves, such as sleeve valves and ball valves, samplers, sensors, pumps, screens (such as to expand), chemical cutters, plugs, detonators, or nipples.Type: GrantFiled: April 27, 2009Date of Patent: December 21, 2010Assignee: Schlumberger Technology CorporationInventors: David R. Smith, Rogerio T. Ramos, Arthur H. Hartog, Vladimir Vaynshteyn
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Patent number: 7720325Abstract: A technique is provided for utilizing an optical fiber in a variety of sensing applications and environments by beneficially routing the optical fiber. A continuous optical fiber is created to provide optical continuity between two ends of the optical fiber. The optical continuity is created with the assistance of an optical turnaround constructed in a simple, dependable form able to control the bend of the optical fiber as it extends through the optical turnaround.Type: GrantFiled: June 27, 2008Date of Patent: May 18, 2010Assignee: Schlumberger Technology CorporationInventors: Harini Varadarajan, Scott A. Rubinstein, Rogerio T. Ramos
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Patent number: 7703517Abstract: Methods and apparatuses for sampling fluid from a subterranean formation penetrated by a wellbore are provided. The subterranean formation has clean formation fluid therein, and the wellbore has a contaminated fluid therein extending into an invaded zone about the wellbore. A shaft is extended from a housing and positioned in a perforation in a sidewall of the wellbore. At least one flowline extends through the shaft and into the housing. The flowline(s) are adapted to receive downhole fluids through the perforation. At least one fluid restrictor, such as a packer, injection fluid or flow inhibitor, may be used to isolate at least a portion of the perforation whereby contaminated fluid is prevented from entering the isolated portion of the perforation. At least one pump selectively draws fluid into the flowline(s).Type: GrantFiled: November 25, 2008Date of Patent: April 27, 2010Assignee: Schlumberger Technology CorporationInventors: Jeffrey A. Tarvin, Julian J. Pop, Simon H. Bittleston, Angus J. Melbourne, Rogerio T. Ramos
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Patent number: 7693376Abstract: Apparatus for preventing unwanted exposure of one or more devices to one or more undesirable substances includes at least one barrier disposed between the device and the undesirable substance. At least one shield substance is provided between the barrier and the device. The shield substance is capable of permeating the barrier sufficient to preclude at least substantial permeation of the undesirable substance through the barrier from the exterior of the barrier, preventing unwanted exposure of the device to the undesirable substance.Type: GrantFiled: February 22, 2006Date of Patent: April 6, 2010Assignee: Schlumberger Technology CorporationInventors: Rogerio T. Ramos, Barry Read
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Publication number: 20100025032Abstract: The present invention comprises a system and methods to actuate downhole tools by transmitting an optical signal through an optical fiber to the downhole tool. The optical signal can comprise a specific optical signal frequency, signal, wavelength or intensity. The downhole tool can comprise packers, perforating guns, flow control valves, such as sleeve valves and ball valves, samplers, sensors, pumps, screens (such as to expand), chemical cutters, plugs, detonators, or nipples.Type: ApplicationFiled: April 27, 2009Publication date: February 4, 2010Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: David R. Smith, Rogerio T. Ramos, Arthur H. Hartog, Vladimir Vaynshteyn
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Patent number: 7603009Abstract: The present invention comprises a system for deploying double-ended distributed temperature sensing (DTS) systems which utilizes less space than prior art systems. In one embodiment, the present invention comprises a cable having at least two independent optical fibers or cores, the at least two optical fibers or cores having angled ends coated with a reflective material, the angled ends providing an optical connection between the two optical fibers or cores so that light can be transmitted therebetween. In another embodiment, the present invention comprises two optical fibers that are optically connected by an optical connection mechanism. All embodiments of the present invention may be deployed within a wellbore and within a single-ended tubing or control line, thus providing double-ended DTS system operation in a single-ended line.Type: GrantFiled: December 22, 2005Date of Patent: October 13, 2009Assignee: Schlumberger Technology CorporationInventor: Rogerio T. Ramos
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Patent number: 7593115Abstract: A component is deployed into a well on a carrier line having an optical cable. An optical signal is transmitted into the optical cable, and a travel time of the optical signal in the optical cable is determined. A profile of a characteristic along the optical cable is determined, and a length of the carrier line deployed into the well is determined based on the determined profile and the travel time.Type: GrantFiled: February 28, 2007Date of Patent: September 22, 2009Assignee: Schlumberger Technology CorporationInventors: Vladimir Hernandez-Solis, Rogerio T. Ramos, Joseph Varkey
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Publication number: 20090194279Abstract: Methods and apparatuses for sampling fluid from a subterranean formation penetrated by a wellbore are provided. The subterranean formation has clean formation fluid therein, and the wellbore has a contaminated fluid therein extending into an invaded zone about the wellbore. A shaft is extended from a housing and positioned in a perforation in a sidewall of the wellbore. At least one flowline extends through the shaft and into the housing. The flowline(s) are adapted to receive downhole fluids through the perforation. At least one fluid restrictor, such as a packer, injection fluid or flow inhibitor, may be used to isolate at least a portion of the perforation whereby contaminated fluid is prevented from entering the isolated portion of the perforation. At least one pump selectively draws fluid into the flowline(s).Type: ApplicationFiled: November 25, 2008Publication date: August 6, 2009Inventors: Jeffrey A. Tarvin, Julian J. Pop, Simon H. Bittleston, Angus J. Melbourne, Rogerio T. Ramos
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Publication number: 20090129732Abstract: Apparatus for preventing unwanted exposure of one or more devices to one or more undesirable substances includes at least one barrier disposed between the device and the undesirable substance. At least one shield substance is provided between the barrier and the device. The shield substance is capable of permeating the barrier sufficient to preclude at least substantial permeation of the undesirable substance through the barrier from the exterior of the barrier, preventing unwanted exposure of the device to the undesirable substance.Type: ApplicationFiled: February 22, 2006Publication date: May 21, 2009Applicant: Schiumberger Tochnology CorporationInventors: Rogerio T. Ramos, Barry Read
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Publication number: 20090087912Abstract: A tagged object includes a main body and a plurality of coded particles. Each coded particle may have a miniature body and be configured to provide a resolvable optical emission pattern when illuminate. The plurality of coded particles may be immobilized to the main body. A method for performing oilfield monitoring may include disposing of different types of tagged objects at different locations, wherein the different types of tagged objects each comprise a plurality of coded particles. Each of the coded particles may have a miniature body containing rare earth elements configured to produce a unique optical emission pattern when illuminated. The method may include allowing an event to trigger the release of one of the different types of tagged objects from one of the different locations. In addition, the method may include identifying the released tagged objects by unique optical emission patterns, in some cases in order to determining an occurrence location of the event.Type: ApplicationFiled: September 29, 2008Publication date: April 2, 2009Applicant: SHLUMBERGER TECHNOLOGY CORPORATIONInventors: Rogerio T. Ramos, Iain Cooper, J. Ernest Brown
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Publication number: 20090087911Abstract: Tagging system and method including a plurality of particles, each particle having a miniature body and configured to provide a non-radioactive resolvable optical emission in a distinguishable pattern when selectively illuminated. The particles are set for selective release to a subsurface location. An apparatus having an elongated body configured for subsurface disposal and a chamber to house a plurality of particles therein.Type: ApplicationFiled: September 28, 2007Publication date: April 2, 2009Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventor: Rogerio T. Ramos
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Patent number: 7496248Abstract: A technique is provided for utilizing an optical fiber in a variety of sensing applications and environments by beneficially routing the optical fiber. A continuous optical fiber is created to provide optical continuity between two ends of the optical fiber. The optical continuity is created with the assistance of an optical turnaround constructed in a simple, dependable form able to control the bend of the optical fiber as it extends through the optical turnaround.Type: GrantFiled: June 27, 2008Date of Patent: February 24, 2009Assignee: Schlumberger Technology CorporationInventors: Harini Varadarajan, Scott A. Rubinstein, Rogerio T. Ramos
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Publication number: 20090022458Abstract: A technique is provided for utilizing an optical fiber in a variety of sensing applications and environments by beneficially routing the optical fiber. A continuous optical fiber is created to provide optical continuity between two ends of the optical fiber. The optical continuity is created with the assistance of an optical turnaround constructed in a simple, dependable form able to control the bend of the optical fiber as it extends through the optical turnaround.Type: ApplicationFiled: June 27, 2008Publication date: January 22, 2009Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Harini Varadarajan, Scott A. Rubinstein, Rogerio T. Ramos
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Publication number: 20090022451Abstract: A technique is provided for utilizing an optical fiber in a variety of sensing applications and environments by beneficially routing the optical fiber. A continuous optical fiber is created to provide optical continuity between two ends of the optical fiber. The optical continuity is created with the assistance of an optical turnaround constructed in a simple, dependable form able to control the bend of the optical fiber as it extends through the optical turnaround.Type: ApplicationFiled: June 27, 2008Publication date: January 22, 2009Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Harini Varadarajan, Scott A. Rubinstein, Rogerio T. Ramos
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Patent number: 7469746Abstract: Methods and apparatuses for sampling fluid from a subterranean formation penetrated by a wellbore are provided. The subterranean formation has clean formation fluid therein, and the wellbore has a contaminated fluid therein extending into an invaded zone about the wellbore. A shaft is extended from a housing and positioned in a perforation in a sidewall of the wellbore. At least one flowline extends through the shaft and into the housing. The flowline(s) are adapted to receive downhole fluids through the perforation. At least one fluid restrictor, such as a packer, injection fluid or flow inhibitor, may be used to isolate at least a portion of the perforation whereby contaminated fluid is prevented from entering the isolated portion of the perforation. At least one pump selectively draws fluid into the flowline(s).Type: GrantFiled: January 31, 2008Date of Patent: December 30, 2008Assignee: Schlumberger Technology CorporationInventors: Jeffrey A. Tarvin, Julian J. Pop, Simon H. Bittleston, Angus J. Melbourne, Rogerio T. Ramos
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Patent number: 7428350Abstract: A technique is provided for utilizing an optical fiber in a variety of sensing applications and environments by beneficially routing the optical fiber. A continuous optical fiber is created to provide optical continuity between two ends of the optical fiber. The optical continuity is created with the assistance of an optical turnaround constructed in a simple, dependable form able to control the bend of the optical fiber as it extends through the optical turnaround.Type: GrantFiled: July 18, 2007Date of Patent: September 23, 2008Assignee: Schlumberger Technology CorporationInventors: Harini Varadarajan, Scott A. Rubinstein, Rogerio T. Ramos
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Publication number: 20080204703Abstract: A component is deployed into a well on a carrier line having an optical cable. An optical signal is transmitted into the optical cable, and a travel time of the optical signal in the optical cable is determined. A profile of a characteristic along the optical cable is determined, and a length of the carrier line deployed into the well is determined based on the determined profile and the travel time.Type: ApplicationFiled: February 28, 2007Publication date: August 28, 2008Inventors: Vladimir Hernandezs-Solis, Rogerio T. Ramos, Joseph Varkey
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Publication number: 20080121394Abstract: Methods and apparatuses for sampling fluid from a subterranean formation penetrated by a wellbore are provided. The subterranean formation has clean formation fluid therein, and the wellbore has a contaminated fluid therein extending into an invaded zone about the wellbore. A shaft is extended from a housing and positioned in a perforation in a sidewall of the wellbore. At least one flowline extends through the shaft and into the housing. The flowline(s) are adapted to receive downhole fluids through the perforation. At least one fluid restrictor, such as a packer, injection fluid or flow inhibitor, may be used to isolate at least a portion of the perforation whereby contaminated fluid is prevented from entering the isolated portion of the perforation. At least one pump selectively draws fluid into the flowline(s).Type: ApplicationFiled: January 31, 2008Publication date: May 29, 2008Applicant: Schlumberger Technology CorporationInventors: Jeffrey A. Tarvin, Julian J. Pop, Simon H. Bittleston, Angus J. Melbourne, Rogerio T. Ramos
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Patent number: 7347262Abstract: Methods and apparatuses for sampling fluid from a subterranean formation penetrated by a wellbore are provided. The subterranean formation has clean formation fluid therein, and the wellbore has a contaminated fluid therein extending into an invaded zone about the wellbore. A shaft is extended from a housing and positioned in a perforation in a sidewall of the wellbore. At least one flowline extends through the shaft and into the housing. The flowline(s) are adapted to receive downhole fluids through the perforation. At least one fluid restrictor, such as a packer, injection fluid or flow inhibitor, may be used to isolate at least a portion of the perforation whereby contaminated fluid is prevented from entering the isolated portion of the perforation. At least one pump selectively draws fluid into the flowline(s).Type: GrantFiled: June 18, 2004Date of Patent: March 25, 2008Assignee: Schlumberger Technology CorporationInventors: Jeffrey A. Tarvin, Julian J. Pop, Simon H. Bittleston, Angus J. Melbourne, Rogerio T. Ramos
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Patent number: 7215416Abstract: Methods for calibrating and making measurements using fiber optic sensors are disclosed using backscattered wavelengths and independent sensors. The disclosure sets outs methods applicable with fiber optic sensors either in a deployed in a loop and in a linear configuration and useful for measurements including temperature.Type: GrantFiled: June 12, 2006Date of Patent: May 8, 2007Assignee: Schlumberger Technology Corp.Inventors: Tsutomu Yamate, Robert J. Schroeder, Rogerio T. Ramos, Oliver C. Mullins