Abstract: A method of generating drillstring design information in response to input data which includes wellbore geometry and wellbore trajectory requirements, comprises the step of generating a summary of a drillstring in each hole section of a wellbore in response to the input data.

Abstract: A method of determining a particular value on a display, comprises the steps of: moving a time log relative to a time line until the time line identifies a selected time on the time log; moving a plurality of values on the display in synchronism with the moving of the time log relative to the time line; and identifying one of the plurality of values on the display when the time line identifies the selected time on the time log, the one of the plurality of values on the display representing the particular value. The particular value on the display comprises a depth on a depth log representing a depth of a drill bit in a borehole. The depth log moves in synchronism with a movement of the time log when the time log moves relative to the time line.

Abstract: A technique is provided to isolate regions of a wellbore. The technique utilizes a swellable material packer that comprises a layer of swellable material disposed about a tubular member of a completion. When the layer is exposed to a substance that induces swelling of the swellable material, the layer expands between the tubular and a surrounding wall to isolate a region of the wellbore annulus.

Abstract: 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.

Abstract: A sensing fibre for use in a distributed temperature sensing system comprises an optical fibre to be deployed in a measurement region in which a temperature measurement is to be made, which incorporates a reflective element, such as a join between portions of fibre, and a coiled fibre portion positioned adjacent a distal side of the reflective element, the coiled fibre portion contributing substantially nothing to the spatial extent of the optical fibre when deployed. In use, the effect of any forward propagating light incident on the reflective element that is returned for detection by the system, and which saturates the detector, can be eliminated by removing the part of the detected signal that corresponds to the coiled portion, after which the detector will have recovered. The remaining parts of the signal can be used to derive the distributed temperature profile since these parts represent the whole extent of the sensing fibre owing to the lack of spatial extent of the coil.

Abstract: A technique is provided in which a contraction joint is used to facilitate connection of well equipment assemblies at a downhole location. The contraction joint accommodates changes in system length during engagement and use or the well equipment assemblies in a wellbore. Additionally, the contraction joint provides a positive indication of joint position and enables resetting of the joint following initial contraction.

Abstract: A release tool adapted to be connected between a perforating gun and a tubing for releasing the perforating gun from the tubing after detonation of the perforating gun, the tool including a housing in connection with the tubing, the housing having an axial bore; an axially shiftable member in connection between the housing and a perforating gun; a seal member positioned in the axial bore of the housing, the axially shiftable member positioned through the seal member; a frangible member maintaining the axially shiftable member in connection between the housing and the perforating gun until the frangible member is shatter disconnecting the shiftable member; and a mechanism for equalizing the pressure across the seal member after the axially shiftable member is disconnected allowing the perforating gun to separate from the housing.

Abstract: A completion assembly has one or more control lines. The control lines can develop differing degrees of slack depending on the completion assembly configuration and also on the particular use of the completion assembly. A line slack compensator cooperates with the completion assembly to provide or remove slack in one or more control lines as necessary for a given operation and a given completion assembly.

Abstract: A well treatment system of the present invention includes a housing forming a sealed surge chamber, and a surge charge disposed within the sealed surge chamber, wherein the surge charge is adapted upon activation to penetrate the housing and to not penetrate material exterior of the housing. Fluid communication is created between the surge chamber and the wellbore when the housing is penetrated by the surge charge. The penetration permits wellbore fluid to flow quickly into the surge chamber. Fluid flow into the surge chamber may enhance a surge of flow from the formation into the wellbore.

Abstract: The multiple interventionless actuated downhole valve includes a valve movable between an open and a closed position to control communication between an annular region surrounding the valve and an internal bore and more specifically controlling communication between above and below the valve, and at least two remotely operated interventionless actuators in operational connection with the valve, wherein each of the interventionless actuators may be operated independently by absolute tubing pressure, absolute annulus pressure, differential pressure from the tubing to the annulus, differential pressure between the annulus and the tubing, tubing or annulus multiple pressure cycles, pressure pulses, acoustic telemetry, electromagnetic telemetry or other types of wireless telemetry to change the position of the valve and allowing the valve to be continually operated by mechanical apparatus.

Abstract: A trocar is disclosed which comprises a housing assembly having an upper end and a lower end and a cannula assembly attached to the lower end of the housing assembly to define an axial bore therethrough. The disclosed trocar also includes an obturator for sliding engagement in the bore. The housing assembly includes an access port formed on the upper end which is axially aligned with the bore of the trocar. Communication via the access port of the housing is regulated by a flapper valve having a closed position and a range of open positions. The flapper valve comprises a metal flapper door having a male/female configuration formed around the protrusion. In the closed position, the protrusion of the flapper door engages the male/female configuration of both door and port mesh resulting in a metal-to-metal seal across the access port. The metal-to-metal seal provides enhanced resistance to mechanical, heat, and chemical wear encountered during surgical and sterilization operations.

Abstract: An apparatus for detecting and transmitting impact data is disclosed for use in monitoring early-stage development of harmful mechanical conditions for reciprocating machinery. The impact transmitter device includes a single self-contained unit having a stainless steel housing which contains an impact accelerometer, a detector circuit, a measurement and timing circuit, a 4-20 mA driver circuit, independent polarity circuit, and an electromagnetic impulse protection unit. The impact transmitter device further includes a field adjustable static threshold defining the severity of the impact detected, and a field adjustable reference time window interval. The variable severe impact level threshold allows an operator to isolate severe impacts from typical machine vibration. The variable time window interval allows an operator to synchronize the present invention with different machine speeds and to collect severe impact data over an appropriate time frame.

Abstract: An obturator assembly having a removable obturator tip, a first engagement device, an obturator shaft, a second engagement device, and a biased flexible member, whereby the obturator tip may be removed by flexing the flexible member against its bias, and a plurality of different obturator tips may be attached to the obturator shaft.

Abstract: Improvements are disclosed in surge reduction tools for running in casings or casing liners downhole with the ability to restore circulation in the event a tight hole condition is encountered. The improved tool includes among other features 1.) an axial indexing apparatus which allows the valving sleeve to be moved downward in predetermined increments to allow alternate closing and opening of the vent ports, 2.) a camming sleeve and Bellville spring washers which provide the surge reduction tool with a more predictable release pressure than has heretofore been available, 3.) a dart directing sleeve which has a smaller, smoother bore than the drill string and provides the important function of aligning the dart before it lands in the seat so that the dart resistance when passing through the seat is minimized, and 4.

Abstract: The present invention relates to a wiper plug and internal drop ball mechanism that may be used in conjunction with a downhole surge reduction tool to run, hang, and cement casing liners in a wellbore. The apparatus of the present invention comprises a wiper plug assembly removably attached to the drill string within the casing liner, a drop ball sub attached below the wiper plug assembly which releases a float valve actuator ball having a diameter larger than the drill string, and float equipment having a plurality of flapper valves. The apparatus of the present invention may further comprise a diverter tool connected between the drill string and the casing liner.