This paper is the first in a series of reports on the critical evaluation of vapor-liquid equilibrium, heat of mixing, and volume change of mixing data for binary liquid mixtures of nonelectrolytes. The specific evaluation procedures for each property will be covered in subsequent articles. This paper describes the general procedures used to support the mixture evaluation work. The areas covered include the procedures used to cover the primary and secondary literature, the computer program libraries developed for pure compound and mixture data processing, the procedures used to evaluate and correlate the pure compound property data for use by the mixture programs, and the efforts made to make the best equation of state available to the vapor-liquid equilibrium data reduction programs. Improvements are suggested for the presentation of mixture data in the literature.

The methods used to evaluate subcritical binary PTxy vapor~liquid equilibrium data are described. The evaluation results for the benzene + cyclohexane system are presented.The needs for new experimental data are defined.

With the movement of offshore rigs into deep water, the problem of gas hydrates has become an important issue in drilling. If a kick is taken, gas hydrates can form in the BOP (Blow Out Preventers) or choke lines while circulating out the kick. A water-based pill formulation has been developed which is a significant improvement over current formulations for inhibiting gas hydrates. This pill can be spotted in the BOP to alleviate much of the concern for the formation of gas hydrates. The pill is environmentally safe, can be weighted up, and is easily adaptable to offshore operations. It is compatible with commonly used drilling fluids and can be incorporated directly into the mud system after removing the kick. The technology discussed represents an important safety consideration for deep water drilling well control operations.

No abstract

The methods used to evaluate excess volume data are described. The evaluation results for the benzene + cyclohexane system are presented. The needs for new experimental data are defined.