Abstract: A method of hydraulic fracturing, and tracer composites for use in the fracturing procedure, for tracing the production of formation water from one or more fractured zones. The tracer composites preferably include a formation water tracer material adsorbed onto a solid carrier material.

Abstract: A system and method to access a machine through a mobile device includes sending a machine key to a controller on-board the machine, and a mobile device key to the mobile device using a remote server. The mobile device sends a mobile device ID to the controller. The controller determines the mobile device key based on the mobile device ID and the machine key. The controller sends a random number to the mobile device. The mobile device processes the random number to derive a first processed random number, and sends the first processed random number to the controller. The controller processes the random number to derive a second processed random number. The controller enables a start button to send a request to start the machine, when the first processed random number matches the second processed random number. The controller starts the machine upon receiving the request to start the machine.

Abstract: A method of hydraulic fracturing, and tracer composites for use in the fracturing procedure, for tracing the production of formation water from one or more fractured zones. The tracer composites preferably include a formation water tracer material adsorbed onto a solid carrier material.

Abstract: A method of production allocation for multiple wells, fields, or other individual production sources which feed a common collection tank or battery. For any or each of the individual production sources, an oil-soluble or water-soluble tracer solution is added to the product stream flowing from the source and one or more downstream samples are then taken prior to the point at which the product stream combines with the product streams from any of the other sources. The individual oil production rate or water production rate of the tested production source is then determined using (i) the concentration of the oil-soluble tracer or water-soluble tracer in the tracer solution, (ii) the rate of addition of the tracer solution to the product stream, and (iii) the downstream concentration of the tracer in the oil phase or the water phase of the product stream.

Abstract: A method of hydraulic fracturing, and tracer composites for use in the fracturing procedure, for tracing the production of formation water from one or more fractured zones. The tracer composites preferably include a formation water tracer material adsorbed onto a solid carrier material.

Abstract: A method of hydraulic fracturing, and tracer composites for use in the fracturing procedure, for tracing the production of crude oil or other hydrocarbon liquid products from one or more fractured zones. The tracer composites preferably include an oil soluble tracer adsorbed onto a solid carrier material. A non-water soluble coating is preferable also included on the composite over the tracer compound.

Abstract: A method of hydraulic fracturing, and tracer composites for use in the fracturing procedure, for tracing the production of crude oil or other hydrocarbon liquid products from one or more fractured zones. The tracer composites preferably include an oil soluble tracer adsorbed onto a solid carrier material. A non-water soluble coating is preferable also included on the composite over the tracer compound.