Abstract: A method for determining the distance and/or direction of a second earth borehole with respect to a first earth borehole, includes the following steps: providing, in the first borehole, first and second spaced apart magnetic field sources; providing, in the second borehole, a magnetic field sensor subsystem for sensing directional magnetic field components; activating the first and second magnetic field sources, and producing respective first and second outputs of the magnetic field sensor subsystem, the first output being responsive to the magnetic field produced by the first magnetic field source, and the second output being responsive to the magnetic field produced by the second magnetic field source; and determining distance and/or direction of the second earth borehole with respect to the first earth borehole as a function of the first output and the second output.

Abstract: A method to control borehole fluid flow includes detecting a drilling condition and operating at least one valve in the drill string to place an exterior of the drill string in fluid communication with an interior of the drill string in response to detecting the drilling condition.

Abstract: A system and methods for drilling a well in a field having an existing well are provided. In accordance with one embodiment, a method of drilling a new well in a field having an existing well includes drilling the new well using a bottom hole assembly (BHA) having a drill collar divided by an insulated gap, generating a current on the drill collar of the BHA while drilling the new well, and measuring from the existing well a magnetic field caused by the current on the drill collar of the BHA. Using measurements of the magnetic field, the relative position of the new well to the existing well may be determined.

Abstract: Methods for drilling wells using magnetic ranging while drilling to position the wells with respect to one another are provided. In accordance with one embodiment, a method of drilling a well includes leaving a drill string in position within a primary well, and drilling a secondary well using the drill string as a target for magnetic ranging while drilling such that the secondary well is positioned with a specified orientation relative to the drill string.

Abstract: A coaxial transmission line for an electromagnetic wellbore telemetry system comprises an outer conductive pipe, an inner conductive pipe disposed coaxially inside an axial bore of the outer conductive pipe, a first electrical contact having a first contact face disposed at a first end of the inner conductive pipe, a second electrical contact having a second contact face disposed at a second end of the inner conductive pipe, wherein at least one of the first and second contact faces includes at least one slot, and an insulator disposed between the outer conductive pipe and the inner conductive pipe.

Abstract: Systems and methods for drilling a multilateral well using magnetic ranging while drilling are provided. In accordance with one embodiment, a method of drilling a multilateral well includes drilling and casing a mother wellbore, installing a multilateral junction, drilling and casing a first lateral well from the multilateral junction, and drilling a second lateral well from the multilateral junction using magnetic ranging while drilling such that the second lateral well has a controlled relationship relative to the first lateral well. The first and second lateral wells may form a SAGD well pair, in which case the first lateral well may be a producer well and the second lateral well may be an injector well.

Abstract: Logging-while-drilling apparatus and methodologies for measuring streaming potential in an earth formation are provided. The apparatus and methodologies can be utilized to find information relevant to the drilling operations. In particular, since the streaming potential measurement relates directly to fluid flow, the streaming potential measurements can be used to track flow of fluids in the formation. In turn, this information may be used to find information relevant to the drilling operations, such as under-balanced drilling conditions, abnormal formation pressures, open fractures, the permeability of the formation, and formation pressure.

Abstract: Industrial gas customer station components comprising a plurality of cryogenic storage tanks each having top and bottom nozzles in flow communication with first and second tank piping connection points, respectively, disposed at a defined distance apart, thereby providing standardized first and second tank piping connection points, and a plurality of piping skids each comprising first and second pipe sections having first and second ends, the first ends thereof defining first and second piping skid connection points disposed at a defined distance apart, thereby providing standardized first and second piping skid connection points. The defined distances between the respective first and second piping skid connection points and the first and second tank piping connection points are essentially equal.

Abstract: A method of locating a conductive target from a wellbore includes generating a current flowing across an insulated gap in a downhole tool positioned in the wellbore, measuring an azimuthal magnetic field with at least one external magnetometer located proximate the exterior of the downhole tool, measuring a secondary magnetic field using a magnetometer disposed inside the downhole tool, computing at least one of a direction and a distance to the conductive target.

Abstract: Method of designing a customer station adapted to receive a cryogenic liquid, store the cryogenic liquid, discharge the cryogenic liquid after storage, and either provide the cryogenic liquid as a liquid product to a user or vaporize the cryogenic liquid to provide a gas product to a user. The method comprises selecting design parameters including product type, range of product flow rates, and required pipe diameters and piping types. Standardized piping skids are designed for one or more of the combinations of product type, pipe size, and pipe type. The product requirements of a user are defined, the type of cryogenic liquid storage tank is determined, and a piping skid design for the required service is selected from the standardized piping skid designs. The customer station then is designed using the selected standardized piping skid design and the selected type of cryogenic storage tank.

Abstract: To determine effect on a magnetic field caused by a lining structure in a wellbore, an array may be deployed into the wellbore lined with the lining structure. The array comprises a plurality of sensors including sensor A configured to operate as a transmitter, sensor B configured to operate as either a transmitter or a receiver, and sensor C configured to operate as a receiver. The array measures magnetic fields using sensor B as a receiver and sensor C in response to activation of sensor B as a transmitter and sensor A. A plurality of lining structure correction factors can be calculated based on the measured magnetic fields, based on the reciprocity of the sensors.

Abstract: A method of locating a conductive target from a wellbore includes generating a current flowing across an insulated gap in a downhole tool positioned in the wellbore, measuring an azimuthal magnetic field with at least one external magnetometer located proximate the exterior of the downhole tool, measuring a secondary magnetic field using a magnetometer disposed inside the downhole tool, computing at least one of a direction and a distance to the conductive target.

Abstract: A wireless electromagnetic telemetry system for broadcasting signals across a bottomhole assembly disposed in a borehole drilled through a subterranean formation includes an insulated gap at a first point in the bottomhole assembly, at least one magnetic field sensor at a second point in the bottomhole assembly which measures a magnetic field, and a circuitry which modulates a voltage across the insulated gap, wherein the voltage creates an axial current along the bottomhole assembly that results in the magnetic field.

Abstract: A casing drilling system includes a casing having a drill bit at one end. The drill bit is capable of drilling subsurface formations and formed from a material removable by drilling or chemical exposure. The chemical is substantially harmless to the casing. The system includes a centralizer affixed to an interior of the casing. The centralizer includes a receptacle therein for engaging a measurement while drilling tool. The centralizer is formed from a material removable by drilling or chemical exposure, wherein the chemical is substantially harmless to the casing. The system includes a measurement while drilling tool configured to move along the interior of the casing and to engage with the centralizer. The tool includes a device to measure a drilling parameter or a formation parameter. The tool including a latch at an upper end thereof for engagement with a retrieval tool moved through the interior of the casing.

Abstract: The present invention discloses a monitoring system integrated on a casing or tubing sub (10) having an inner and an outer surface and defining an internal cavity, comprising a sensor (24); data communication means (21A) for providing wireless communication between an interrogating tool (20) located in the internal cavity (14) and the sensor, these data communication means being on the casing or tubing sub; and power communication means (21B) for providing wireless power supply to the sensor, these power communication means being on the casing or tubing sub. The invention further discloses a method of completing a well in a subsurface formation comprising the step of installing the casing or tubing sub of the present invention. The invention further discloses a method of monitoring subsurface formations, fluids in the well or casing and tubing properties with the casing or tubing sub of the present invention.

Abstract: Logging-while-drilling apparatus and methodologies for measuring streaming potential in an earth formation are provided. The apparatus and methodologies can be utilized to find information relevant to the drilling operations. In particular, since the streaming potential measurement relates directly to fluid flow, the streaming potential measurements can be used to track flow of fluids in the formation. In turn, this information may be used to find information relevant to the drilling operations, such as under-balanced drilling conditions, abnormal formation pressures, open fractures, the permeability of the formation, and formation pressure.

Abstract: Extended release formulations of quetiapine and its pharmaceutically salts, and methods for manufacture of the formulations, may include the use of polymers selected for their physical and chemical characteristics. The formulations may include polymers selected to cause solid dosage forms of the formulations to conform to preselected quetiapine release criteria. The formulations may include non-polymer materials that may affect quetiapine release.

Abstract: An antenna structure is separately and independently formed with respect to a downhole tool. The antenna is adapted for easy and rapid deployment on the tool. An independently formed ‘partial ring section’ (or arcuate shaped member) contains an antenna coil. In one embodiment, two or more of the independently formed partial ring sections are placed in a recess on the tubular forming the downhole tool. In another embodiment, the partial ring sections can also be placed in one or more longitudinally distributed sections about the tool. Another embodiment includes partial ring sections forming an antenna with multiple coils of differing orientation to provide directional sensitivity.

Abstract: A well logging instruments includes an electrically conductive sonde mandrel. At least one electrical sensor is affixed to an exterior of the mandrel. The sensor is configured to be attached to the mandrel by sliding along an exterior surface thereof. A pressure-sealing electrical feedthrough bulkhead makes electrical connection from the at least one sensor through a wall of the mandrel.

Abstract: A method for stimulating a reservoir formation while running a casing string into the wellbore includes the steps of: connecting a stimulation assembly to a casing string, the stimulation assembly including a packer actuator in operational connection with a packer and a logging sensor; running the casing string into the wellbore and positioning the logging assembly proximate to a selected reservoir formation; logging the reservoir formation; positioning the stimulation assembly proximate to the reservoir formation; actuating the packer to substantially isolate the reservoir formation from the wellbore; performing the stimulation operation; releasing the packers from sealing engagement with the wellbore; positioning the logging assembly proximate to the reservoir formation; logging the reservoir formation; and disconnecting the stimulation assembly from the casing string.