Print this pageAbstract: The Study on the
Contributing Factors of 
Phase
State of Condensate Gas: Examples from Tarim
Basin
ZHOU XINGXI, WANG HONGJUN,
CHEN YICAI and XU ZHIMING
About 70 condensate
gas reservoirs have been discovered in the Tarim Basin. They contain condensate
gases generated from terrestrial humus source rock with thermal maturation
between 0.5% and 1.9% R, and from marine sapropelic source rock with thermal
maturation ranging from 1.5% to 1.9% R. The condensate gas in the Tarim
Basin is typlified by diverse properties from wide distributions and complicated
genesis, which are rarely found in other oil and gas fields all over the
world. By means of the PR state equation, we calculated the PVT phase diagram
of thermal simulation products of terrestrial humus lignite samples and
marine sapropelic samples, establishing the model of generation condensate
gas.
According to the character
of the PVT phase diagram, the condensate gas reservoirs can be classified
into three primary types of formation. Moreover, in terms of the formation
mechanism of phase
state, we will discuss the reason why the condensate
gas reservoirs are extensively dispersed.
AAPG Search and Discovery Article #90939©1997 AAPG Eastern Section and TSOP, Lexington, Kentucky