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| Number | Title | Issue Date |
| 8162050 | Use of micro-electro-mechanical systems (MEMS) in well treatments A method of servicing a wellbore, comprising placing a plurality of Micro-Electro-Mechanical System (MEMS) sensors in a wellbore composition, pumping the wellbore composition into the wellbore at a flow rate, determining velocities of the MEMS sensors along a length... | 04/24/2012 |
| 8157008 | Cement evaluation method and tool A method of preparing a wellbore for production includes running a wellbore clean-out string, including a cement evaluation tool and a wellbore cleaning tool, into a wellbore, acquiring data relating to at least one property of a cement bond of the wellbore, using t... | 04/17/2012 |
| 7891423 | System and method for optimizing gravel deposition in subterranean wells A system for optimizing gravel deposition in a completion interval of a well. The system includes a pumping system that is operable to deliver a gravel pack slurry to the completion interval, an actuator system that is operable to control properties of the gravel pa... | 02/22/2011 |
| 7401646 | Methods for reverse-circulation cementing in subterranean formations Methods and systems for reverse-circulation cementing in subterranean formations are provided. An example of a method is a method of cementing casing in a subterranean well bore, comprising inserting a casing into the well bore, the casing comprising a casing shoe; ... | 07/22/2008 |
| 7389815 | Methods for reverse-circulation cementing in subterranean formations Methods and systems for reverse-circulation cementing in subterranean formations are provided. An example of a method is a method of cementing casing in a subterranean well bore, comprising inserting a casing into the well bore, the casing comprising a casing shoe; ... | 06/24/2008 |
| 7387159 | Blending system for solid/fluids mixtures The disclosure concerns a method and a system for monitoring the composition of a cement slurry or wellbore service fluid, the method and system including one or more feeder units for solid particulate material; one or more mixing or blending units adapted to receiv... | 06/17/2008 |
| 7370705 | Multiple zone downhole intelligent flow control valve system and method for controlling commingling of flows from multiple zones A production control system having a series of nested tubular members including at least one axial flow channel and at least two annular flow channels. At least one valve configured and positioned to control flow from each flow channel is provided. A producti... | 05/13/2008 |
| 7367394 | Formation evaluation while drilling A sampling while drilling tool positionable in a wellbore penetrating a subterranean formation is provided. The tool includes a drill collar, at least one sample chamber, at least one flowline and at least one cover. The drill collar is operatively connectable to a ... | 05/06/2008 |
| 7316272 | Determining and tracking downhole particulate deposition Methods and apparatus provide for the characterization of injected fluid flow within a wellbore. Particular embodiments include injecting a slurry comprising a particulate material and a carrier fluid into an isolated wellbore annulus and acquiring composite density... | 01/08/2008 |
| 7291303 | Method for bonding a transmission line to a downhole tool An apparatus for bonding a transmission line to the central bore of a downhole tool includes a pre-formed interface for bonding a transmission line to the inside diameter of a downhole tool. The pre-formed interface includes a first surface that substantially confor... | 11/06/2007 |
| 7278483 | Methods of using cement compositions comprising phosphate compounds in subterranean formations Methods of using cement compositions comprising phosphate compounds in subterranean formations are provided. An example of a method is a method of cementing in a subterranean formation. Other examples of methods include methods of avoiding the loss of circulation in... | 10/09/2007 |
| 7252152 | Methods and apparatus for actuating a downhole tool The present invention relates to apparatus and methods for remotely actuating a downhole tool. In one aspect, the present invention provides an apparatus for activating a downhole tool in a wellbore, the downhole tool having an actuated and unactuated positions. The... | 08/07/2007 |
| 7243715 | Mesh screen apparatus and method of manufacture The present invention provides for a design and method of manufacture for a mesh-type screen to be used in subsurface well completions to prevent the production of sand. ... | 07/17/2007 |
| 7228898 | Gravel pack completion with fluid loss control fiber optic wet connect A gravel pack completion with fluid loss control and fiber optic wet connect. In a described embodiment, a system for completing a subterranean well includes multiple assemblies installed in a wellbore. Each assembly has a fiber optic line. The fiber optic lines are... | 06/12/2007 |
| 7219730 | Smart cementing systems The present invention provides methods and apparatus for determining the location of an apparatus in a wellbore. The method includes lowering the apparatus with a conveying member and measuring a parameter associated with the conveying member. Thereafter, the measur... | 05/22/2007 |
| 7219729 | Permanent downhole deployment of optical sensors The present invention involves methods and apparatus for permanent downhole deployment of optical sensors. Specifically, optical sensors may be permanently deployed within a wellbore using a casing string. In one aspect, one or more optical sensors are disposed on, ... | 05/22/2007 |
| 7210856 | Distributed temperature sensing in deep water subsea tree completions A deep water subsea tree completion having a distributed temperature sensing system. In a described embodiment, a method of installing an optical fiber in a well includes the steps of: conveying an optical fiber section into the well; and monitoring a light transmis... | 05/01/2007 |
| 7182141 | Expander tool for downhole use An expander tool for expanding a first tubular into a second surrounding tubular within a wellbore. The expander tool first comprises a body. Within the body is an expansion member capable of being actuated outwardly from the body when expansion of the first tubular... | 02/27/2007 |
| 7152676 | Techniques and systems associated with perforation and the installation of downhole tools A technique to install a tool in a well includes running the tool into the well and fixing the tool to the well with a fixing agent without pumping the fixing agent through a central passageway of the tool. The tool may be a perforating gun that includes a casing bo... | 12/26/2006 |
| 7140437 | Apparatus and method for monitoring a treatment process in a production interval An apparatus (50) for monitoring a treatment process in a treatment interval (58) includes a packer assembly (60) and a sand control screen assembly (64) connected relative to the packer assembly (60). A cross-over assembly (62 | 11/28/2006 |
| 7133778 | Methods for selecting a cementing composition for use A method is provided for selecting a cementing composition for sealing a subterranean zone penetrated by a well bore. The method involves determining a group of effective cementing compositions from a group of cementing compositions given estimated conditions experi... | 11/07/2006 |
| 7100691 | Methods and apparatus for completing wells Improved methods and apparatus for completing a subterranean zone penetrated by a wellbore are provided. The improved methods basically comprise the steps of placing a sand control screen (e.g., screens, screened pipes, perforated liners, prepacked screens, etc.) an... | 09/05/2006 |
| 7100690 | Gravel packing apparatus having an integrated sensor and method for use of same A gravel packing apparatus (310) has an outer tubular (312) having a plurality of openings (314) therethrough and a sand control screen assembly (318) disposed within the outer tubular (312). The sand control screen assembly (31... | 09/05/2006 |
| 7073601 | Profiled encapsulation for use with instrumented expandable tubular completions The present invention provides an encapsulation for housing instrumentation lines, control lines, or instruments downhole. In one use, the encapsulation resides between an expandable downhole tool, such as an expandable sand screen, and the wall of the well bore. Th... | 07/11/2006 |
| 7066256 | Apparatus and method of detecting interfaces between well fluids An apparatus for use in circulating cement in a casing in a wellbore is described having a first component such as a sensor disposed on the casing and a second component such as a detectable device disposed at a fluid interface formed between the cement and a fluid.... | 06/27/2006 |
| 7059404 | Variable intensity memory gravel pack imaging apparatus and method An apparatus and method are provided for varying an operating parameter for a nuclear gamma ray tool for evaluating the integrity of gravel packing. The gamma ray outpat intensity and area of investigation are altered by changing a source housing geometry and the ma... | 06/13/2006 |
| 7055604 | Use of distributed temperature sensors during wellbore treatments The invention relates to a method for treating subterranean formation comprising providing distributed temperature sensors, injecting a treatment fluid and monitoring the temperature across the treatment interval during the injection process. ... | 06/06/2006 |
| 7048063 | Profiled recess for instrumented expandable components The present invention provides a recess within an expandable downhole tubular, such as an expandable sand screen. The recess resides within the wall, such as the outer shroud of an expandable sand screen. The recess serves as a housing for instrumentation lines, fib... | 05/23/2006 |
| 7040402 | Instrumented packer A technique that is usable with a subterranean well includes communicating a fluid into a region of the well and monitoring a level of the fluid communicated via a downhole sensor. The communication is controlled in response to the monitoring. ... | 05/09/2006 |
| 7006918 | Method for stress and stability related measurements in boreholes A method for the measurement of the stresses and pressure perturbations surrounding a well, and a system for computing the optimum location for initiating a hydraulic stress fracture. The technique includes using sensors attached to the wellbore casing connected to ... | 02/28/2006 |
| 6994167 | Method and system for cement lining a wellbore The invention describes a method of cement lining a wellbore to enable a fixed sensor internal of the lining to sense characteristics of the external formations surrounding the wellbore using, at the region of the sensor position, a permeability changing device befo... | 02/07/2006 |
| 6953089 | Apparatus and method of detecting interfaces between well fluids An apparatus for use in circulating cement in a casing in a wellbore is described having a first component such as a sensor disposed on the casing and a second component such as a detectable device disposed at a fluid interface formed between the cement and a fluid.... | 10/11/2005 |
| 6913083 | Method and apparatus to monitor, control and log subsea oil and gas wells A method and apparatus for logging, controlling, or monitoring a subsea well or group of wells through a path not within production tubing. Preferred embodiments allow logging tools, wire rope, optic fibers, electrical cables, monitoring and measuring instruments an... | 07/05/2005 |
| 6910537 | Canister, sealing method and composition for sealing a borehole Method and composition for sealing a borehole. A chemically bonded phosphate ceramic sealant for sealing, stabilizing, or plugging boreholes is prepared by combining an oxide or hydroxide and a phosphate with water to form slurry. The slurry is introduced into the b... | 06/28/2005 |
| 6789621 | Intelligent well system and method An intelligent well system and method has a sand face completion and a monitoring system to monitor application of a well operation. Various equipment and services may be used. In another aspect, the invention provides a monitoring system for determining placement o... | 09/14/2004 |
| 6668923 | Positive indication system for well annulus cement displacement An annulus collar around a well production tube is cast in cement by a procedure that axially delineates the collar between two expandable well packers in the production tube string. Between the packers are a pair of cementing valves. An ingress valve is ... | 12/30/2003 |
| 6634425 | Instrumented cementing plug and system A system for cementing a tubular member in a well bore includes a cementing plug. The cementing plug includes at least one sensor. The system transmits a value measured by the sensor to a surface location. The system may transmit the value measured by the... | 10/21/2003 |
| 6581453 | Method and apparatus for detecting and localizing unwanted matter internally in a pipe string A method and a device for detecting and localizing unwanted matter, e.g., cement deposits, internally in a drill string. A sleeve-shaped indicator body is dropped down through the drill string while the same occupies an operative position. Then, the indic... | 06/24/2003 |
| 6581686 | Method of and device for tracing hydraulic fractures, stimulations, cement jobs, etc. in oil and gas wells Tracing hydraulic fractures, stimulations, selective cement jobs, etc. in oil and gas wells includes introducing into a well in a zone of interest a plurality of radio frequency transmitting elements each having an identification, moving in the well a rea... | 06/24/2003 |
| 6554065 | Memory gravel pack imaging apparatus and method The present invention provides apparatus and method for evaluating the integrity of gravel packing. A screen is disposed in an annulus between the wellbore and a production tubing. A tubing, such as a wash pipe, is placed inside the production tubing to p... | 04/29/2003 |
