A communication unit is situated in or on a casing collar. The casing collar has two threaded ends for joining casing joints to construct a well casing, and a communication unit is disposed in or on a central region of the tube between the two threaded ends. In an example, the communication unit has a transmitter for transmitting sensor data uphole from a sensor sensing a well bore condition. For example, the communication unit has a receiver for receiving sensor data from Micro-Electro-Mechanical Systems (MEMS) sensors, a transceiver for interrogating RFID tags, an acoustic transceiver for sensing wellbore conditions, a pressure sensor, a temperature sensor, and batteries for powering the communication unit.

A system for tracking an object in oil and gas wellbore operations wherein a releasable object carrying a first signal system is released into tube system associated with a wellbore. The first signal system communicates with one or more second signal systems positioned along the travel path of the object; along the surface of the formation; and/or throughout the wellbore. First signal system and the second signal system may communicate by RF signals. First signal system and any second signal systems positioned on the surface communicate by through-the-earth or very low frequency signals. A global positioning system may be utilized in conjunction with any second signal systems on the surface to identify the absolute location of the object in the underground wellbore. The first signal system carried by the object may be a piezoelectric system disposed to transmit a signal when the object experiences a predetermined pressure.

A system for tracking an object in oil and gas wellbore operations wherein a releasable object carrying a first signal system is released into tube system associated with a wellbore. The first signal system communicates with one or more second signal systems positioned along the travel path of the object; along the surface of the formation; and/or throughout the wellbore. First signal system and the second signal system may communicate by RF signals. First signal system and any second signal systems positioned on the surface communicate by through-the-earth or very low frequency signals. A global positioning system may be utilized in conjunction with any second signal systems on the surface to identify the absolute location of the object in the underground wellbore. The first signal system carried by the object may be a piezoelectric system disposed to transmit a signal when the object experiences a predetermined pressure.

Injection of CO.sub.2 may be controlled and optimized, and CO.sub.2 plume leaks monitored in real time, using a controlled sleeve system deployed into a well, where the controlled sleeve system comprises a predetermined set of ports extending from an outer surface of a substantially tubular housing through to an inner annulus of the housing and one or more selectively actuated sliding sleeves configured to selectively open, occlude, and close the predetermined set of ports. One or more sensors configured to be deployed in the well may be present. A wireless remotely actuated flow controller disposed at least partially within the housing and operatively in communication with the sensor comprises a sleeve actuator controller operatively connected to the selectively actuated sliding sleeve and a sensor data acquisition module operatively in communication with the sensor. A communications module is operatively in communication with the wireless remote actuated flow controller. Power may be supplied via a power supply operatively in communication with the wireless remote actuated flow controller, the communications module, and the sensor. The controlled sleeve system is placed into communication with a surface control system disposed proximate a surface location of the well and CO.sub.2 injected into a geological formation of the well, at least partially through the controlled sleeve system. The surface system is used to selectively actuate the selectively actuated sleeve to selectively choke, occlude, and permit the flow of CO.sub.2.

Injection of CO.sub.2 may be controlled and optimized, and CO.sub.2 plume leaks monitored in real time, using a controlled sleeve system deployed into a well, where the controlled sleeve system comprises a predetermined set of ports extending from an outer surface of a substantially tubular housing through to an inner annulus of the housing and one or more selectively actuated sliding sleeves configured to selectively open, occlude, and close the predetermined set of ports. One or more sensors configured to be deployed in the well may be present. A wireless remotely actuated flow controller disposed at least partially within the housing and operatively in communication with the sensor comprises a sleeve actuator controller operatively connected to the selectively actuated sliding sleeve and a sensor data acquisition module operatively in communication with the sensor. A communications module is operatively in communication with the wireless remote actuated flow controller. Power may be supplied via a power supply operatively in communication with the wireless remote actuated flow controller, the communications module, and the sensor. The controlled sleeve system is placed into communication with a surface control system disposed proximate a surface location of the well and CO.sub.2 injected into a geological formation of the well, at least partially through the controlled sleeve system. The surface system is used to selectively actuate the selectively actuated sleeve to selectively choke, occlude, and permit the flow of CO.sub.2.

Systems and methods for reducing unwanted water and/or gas intrusion into a hydrocarbon production wellbore. The system includes a treatment injection tool for injecting a treatment agent into portions of the formation surrounding the wellbore and a tunneling tool for forming one or more tunnels within the formation. Sensors provide real-time information about wellbore parameters during treatment so that wellbore analysis can be conducted.

Systems and methods for reducing unwanted water and/or gas intrusion into a hydrocarbon production wellbore. The system includes a treatment injection tool for injecting a treatment agent into portions of the formation surrounding the wellbore and a tunneling tool for forming one or more tunnels within the formation. Sensors provide real-time information about wellbore parameters during treatment so that wellbore analysis can be conducted.

The present disclosure is directed to articles that include one or more coated fiber(s) (i.e., fiber(s) with a cured coating disposed thereon), where the coating includes a matrix of crosslinked polymers and optionally a colorant (e.g., pigment particles or dye or both). The cured coating is a product of crosslinking a coating composition including uncrosslinked polymers (e.g., a dispersion of uncrosslinked polymers in a carrier, wherein the uncrosslinked polymers are crosslinked to form the matrix of crosslinked polymers). The present disclosure is also directed to articles including the coated fibers, methods of forming the coated fibers and articles, and methods of making articles including the coated fibers.

The present disclosure is directed to articles that include one or more coated fiber(s) (i.e., fiber(s) with a cured coating disposed thereon), where the coating includes a matrix of crosslinked polymers and optionally a colorant (e.g., pigment particles or dye or both). The cured coating is a product of crosslinking a coating composition including uncrosslinked polymers (e.g., a dispersion of uncrosslinked polymers in a carrier, wherein the uncrosslinked polymers are crosslinked to form the matrix of crosslinked polymers). The present disclosure is also directed to articles including the coated fibers, methods of forming the coated fibers and articles, and methods of making articles including the coated fibers.

A fluid sampling tool and method for fluid sampling in an ultra-tight or tight formation. The tool may include a packer assembly that includes one or more inflatable packers and one or more exhaust ports, a multi-chamber section that includes one or more sample chambers, and at least two storage sections that each contain a storage tank, wherein each storage tank holds a stimulation fluid. A method for performing a stimulation operation that includes disposing a fluid sampling tool into a well, moving the fluid sampling tool to a zone of interest, and isolating the zone of interest with a packer assembly on the fluid sampling tool. The method may further include performing a first pressure draw down and a first pressure build up, performing an injectivity test, and performing a sampling process.