Study on four-proerty relationship of Chang 6 reservoir in Panlong area of Ordos Basin
In view of the insufficient research and understanding of the four-proerty relationship of Chang 6 reservoir in Panlong area,the lithology,physical properties,electrical properties and oiliness characteristics of reservoirs in the study area and their interrelationships were studied by using logging data,logging and well completion data,core analysis and laboratory data in Panlong area.The results showed that:①Chang 6 oil-bearing formation in Panlong area was dominated by feldspathic sandstone;②The average porosity of the reservoir was 8％,and the average permeability was 0.79 x 10-3 μm2,which belongs to low porosity and ultra low permeability reser-voir;③The core in the logging was mainly oil trace and oil spot oil grade;④Combined with the core test data,the logging interpretation model of reservoir parameters was established,and the lower limit of effective reservoir physical properties was determined as follows:permeability 0.15 × 10-3 μm2,porosity 5.5％,lower limit of resistivity 20 Ω·m,lower limit of acoustic time difference 215 μs/m.Study on the basic characteristics of the four-proerty relationship and their relationship,and the electrical interpretation chart of the physical property and oil-bearing property of the reservoir in this area were obtained.This provides a basis for reservoir interpretation and the determination of proved reserve parameters in the follow-up study area.
Ordos BasinPanlong areaChang 6 reservoirfour-proerty relationshiplogging interpretation model
NETL
NSTL
万方数据
