Research On Reservoir Enrichment Regularity Of Yan 9 In Ji Yuan Oil Region

Comprehensive use of drilling core,logging and analysis of test data,with residual thickness method for recovery of Yanan formation in jiyuan oilfield palaeogeomorphology method,supplemented by impression to refine palaeogeomorphology.On this basis,to restore palaeogeomorphology from two-and three-dimensional,and to match Yan 9 oil reservoir geological characteristics and hydrocarbon accumulation,and to summary paleogeomorphology reservoir enrichment of control.Studies show that jiyuan oilfield paleogeomorphology total appeared high in the Southeast(jiyuan-Bao Zi Wan),Central inhibition in the study area,in the Northwest(after WA)paleogeomorphology characteristic of low.According to geomorphic characteristics divided terrain units in the region,have eroded valleys(divided into ningshan grade ancient River Valley and the three valleys),ancient Highlands,slope belt of paleo-uplift 3 ancient geomorphic units.Ancient river valleys incised shortening migration distance and difficulty,while the Valley fill sandstone can be used as a transport layer for oil and gas migration.Morphology control of Yan 9 oil reservoir sedimentary facies and compaction of drape structural form.The ancient Highlands and paleo-uplift slope nose shaped the development of the full control of Yan 9 oil reservoir distribution and reservoir-forming rule.Ancient landforms of Yan 9 oil reservoir control of Yan 9 oil reservoir built in the study area has important significance,favorable forecast.