	houston oil ho reserves study completed houston oil trust said that independent petroleum engineers completed an annual study that estimates the trust s future net revenues from total proved reserves at mln dlrs and its discounted present value of the reserves at mln dlrs based on the estimate the trust said there may be no money available for cash distributions to unitholders for the remainder of the year it said the estimates reflect a decrease of about pct in net reserve revenues and pct in discounted present value compared with the study made in reuter 
