Abstract: A method of storing and/or transporting core samples in a temperature controlled container includes inserting a core sample into the container and inputting a temperature value into a control panel of the container. The container includes one or more reinforcement members and one or more strap guides coupled an exterior of the container. A temperature of a space within the container where the core samples are located is measured and compared to the temperature value. The space within the container where the core samples are located is heated or cooled until the temperature of the space is substantially equal to the temperature value. The container and the core samples located within the container can be transported from a drilling site to a testing facility.

Abstract: The present invention discloses an improved system for measurement of the liquid flow rate and totalized liquid production of a producing well. In the method of the present invention, liquid production rate in a pumping well is determined by calculation based upon wellbore geometry and continuously monitoring the depth of the fluid level within the wellbore. It is applicable to any pump lifted well where it is possible to shut the pump off periodically. Accuracy is enhanced with this method by properly accounting for pump leakage and where pump leakage is either known or can be estimated within reasonable limits or where it is measured during the pump shut off cycle.

Abstract: The extent of invasion of a water-based drilling fluid into a formation may be determined using at least two tracers where one is deuterium oxide and the other is a water-soluble tracer. One such method includes introducing a drilling fluid having an aqueous phase and known concentrations of a water-soluble tracer and deuterium oxide into a well drilled into a fluid-producing formation; obtaining a sample of the fluid from the fluid-producing formation at a location adjacent to the well; determining the concentrations of the deuterium oxide and water-soluble tracer in the sample; and calculating the deuterium oxide concentration within the fluid producing formation based on the known and determined concentrations of the water-soluble tracer and deuterium oxide in the drilling fluid and in the sample.

Abstract: A method of ascertaining or measuring subterranean events includes use of deuterium oxide-depleted water as a tracer. The presence of deuterium oxide-depleted water may be measured at a subterranean location by means such as core sampling, for any purpose for which tracers are known to be useful. For example, the presence or absence, and level, of deuterium oxide-depleted water in a core sample may be used to determine fluids saturation levels, porosity and permeability, as well as other subterranean formation and/or reservoir characteristics important to the oil and gas production industry.

Abstract: A method of determining the invasion of a water-based drilling fluid into a formation comprising using at least two tracers, of which one is deuterium oxide and the other is another water-soluble tracer. The use of these two tracers enables the practitioner to distinguish between water from the drilling fluid and water that is inherent in the formation. The ability to make this distinction improves the accuracy of calculations and calibrations that include formation water as a factor or variable. The method is particularly useful when calculations are to be based upon the analysis of core samples.