Abstract: A biosensor system comprises a capillary substrate, conductive electrode, and a plurality of nanoparticles having an enzyme deposited thereon formed in a cavity at one end of the capillary substrate. The substrate may have an optional reinforcing layer (which may be conductive or non-conductive) and optional insulating layer thereon. A cannula having an optional conductive layer, insulating layer, and reference electrode may also form part of the system.

Abstract: A system and method for monitoring geophysical processes is disclosed. The system may include a component array located within the bore hole of the active well, or, alternatively, in the bore hole of a nearby offset well, or, alternatively, in multiple shallow boreholes in the surface around the active well. The system may include a sensor array located within a bore, wherein the sensor array has at least one tilt sensor and at least one microseismic sensor, a transmitter in communication with the at least one tilt sensor and the at least one microseismic sensor, and a receiver in communication with the transmitter. In one embodiment, data comprising tiltmeter data and microseismic data from a sensor during at least one geophysical process is received.

Abstract: The treatment well tiltmeter system comprises one or more tiltmeter assemblies which are located within an active treatment well. The treatment well tiltmeter system provides data from the downhole tiltmeters, and can be used to map hydraulic fracture growth or other subsurface processes from the collected downhole tilt data versus time. The system provides tilt data inversion of data from each of the treatment well tiltmeter assemblies, and provides isolation of data signals from noise associated with the treatment well environment. As well, the treatment well tiltmeter system provides geomechanical modeling for treatment well processes.

Abstract: A system and method for microseismic fracture mapping using seismic source timing measurements for velocity calibration is disclosed. The system may include a seismic source coupled to a wireline and a seismic source trigger, a sensor capable of detecting a first signal from the seismic source trigger, a transmitter coupled to the sensor, capable of transmitting a time value associated with the first signal, a receiver capable of detecting an event generated by the seismic source; and an analyzer capable of calculating a microseismic velocity of the event. In one embodiment, a first signal is transmitted through a wireline to trigger a seismic source. The first signal is detected, and a first time value associated with the first signal is transmitted. An event associated with the seismic source is detected and a second signal associated with the event is transmitted to an analyzer.

Abstract: Methods, systems, and articles of manufacture consistent with the present invention provide for determining the orientation of natural fractures in the Earth resulting from hydraulic fracturing treatment. Data attribute information from a far-field point-source signal profile for a microseismic event is extracted in the time domain. An estimate of the orientation of the natural fracture is calculated in the time domain based on the extracted data attribute information.

Abstract: A formation fracturing method with which to mitigate risk to hydrocarbon productivity includes pumping fracturing fluid, during at least part of a fracturing job time period, into a well to fracture a formation; generating signals, within the fracturing job time period, in response to at least one dimension of the fracture; and further pumping fracturing fluid, within the fracturing job time period, into the well in response to the generated signals. Further pumping includes controlling at least one of a pump rate of the further pumping and a viscosity (either fluid viscosity or particulate concentration) of the further pumped fracturing fluid. Control can include comparing a measured magnitude of at least one dimension of the fracture represented by the generated signals with a predetermined modeled magnitude of the same dimension. Tiltmeters can be used to sense fracture height and width, for example.

Abstract: The present invention involves a desktop administration system and method which allows a network administrator to remotely create, protect, and manage desktops and control file systems across a network. The method involves masking operation of the network providers while obtaining a user security information record relating to the user's allowed scope of access to the network providers. Next, the operation of the user is enabled only with the network providers authorized based on the user security information record. Finally, the user's interaction with each network provider is monitored and the user is only allowed to act consistent with the user security information record. Each workstation includes a personal desktop facility (PDF) and a Daemon which protects the user's desktop.

Abstract: The present invention involves a desktop administration system and method which allows a network administrator to remotely create, protect, and manage desktops and control file systems across a network. The invention provides security software, a PDF and Daemon, which is installed as the primary Registry process. Upon starting of the workstation, the security software mask off any other interrupt or process and complete an authentication procedure while creating an electronic trail for operating system to continue operation as if the security software did not preempt the operating system. The PDF receives desktop information from the network server and builds a desktop which the user manipulates to invoke local and/or network programs and access local and/or network utilities, providing appropriate keys or other authentication information to access restricted network resources.

Abstract: The present invention involves a desktop administration system and method which allows a network administrator to remotely create, protect, and manage desktops and control file systems across a network. The invention provides a graphic user interface to construct user desktops, apply restriction options, maintain transaction logs, and password protect any object accessible from the user workstation. The server software operates to lock out any unpermitted users, allowing access to programs or processes presenting appropriate keys or other authentication information. Each workstation includes a personal desktop facility (PDF) and a Daemon which protects the user's desktop. The PDF receives desktop information from the network server and builds a desktop which the user manipulates to invoke local and/or network programs and access local and/or network utilities, providing appropriate keys or other authentication information to access restricted network resources.