Phase envelopes in reservoir fill analysis: Two contrasting scenarios.

Phase envelopes are routinely employed by reservoir engineers for fluid characterisation. These envelopes are controlled by reservoir fluid composition, pressure and temperature. As a result of increasing source-rock maturation, fluids with decreasing molecular weights and densities and increasing gas-to-oil ratios (and hence different phase envelopes) are generated, which are thus linked to fluid history.

Instrument to evaluate the perception of minimal contrasts in Chilean Sign Language - reliability evidence.

Purpose: Obtain evidence of the test reliability to evaluate the perception of minimum contrasts in Chilean Sign Language (LSCh).

Methods: Ten deaf children and adolescents aged between 7 and 14 years participated in this study. They were evaluated with the test of perception of minimal contrasts in LSCh.