地质科技情报2018，Vol.37Issue(4)：106-112,7.DOI:10.19509/j.cnki.dzkq.2018.0413
渤海CF油田古近系湖相碳酸盐岩储层特征
Characteristics of Lacustrine Carbonate Reservoir of the Paleogene in CF Oilfield, Bohai Sea
摘要
Abstract
The drilling information reveals that the lacustrine carbonate reservoirs in the Bohai CF Oilfield have strong heterogeneity.This paper studies the chracteristics of the lacustrine carbonate reservoirs in the CF Oilfield based on the study of core description, thin section, well logging, laboratory analysis, 3 Dseismic data and other information.The results show that the lacustrine carbonate reservior in Sha I Member in CF Oilfield is dominated by bioclastic dolostone with thin bioclastic limestone and dolomite conglomerate, which can be divided two parts in vertical direction:bioclastic dolostone in the upper part and dolomite conglomerate in the lower part.The reservoir space is predominated by pores, whose main types are intergranular pores, intragranular pores and intergranular dissolved pores, with well developed micro-fissures.The fissures in the bioclastic dolostone are mainly middle-high angle structural-cossosion fissures, while pressure-solution fissure and shrink fissures are often found in dolomite conglomerate.The fissures in the dolomite conglometate are larger than those in the bioclastic dolostone, both of which are intensitively filled with calcite.The reservoir physical property is low porosity and low permeability, controlled by framework of pore throat.The high quality reservoirs are found in the bioclastic dolostone.The sedimentation, tectonic process and dissolution contribute much to the reservoir physical property.The sedimentary facie is the middle platform of faulted basin, the biologic beach and grain beach corresponding to the bioclastic dolostone are the potential areas of high quality sedimentary zones.Based on the comprehensive analysis, the reservoir classification and evaluation, the relative high points of paleogeomorphology and the paleogeomorphic slope are assumed to be the high quality reservoir development area.The paper also present the prediction of the thickness distribution of the high quality reservoir to improve the oilfield development.关键词
储层特征/湖相碳酸盐岩储层/生屑云岩/储集空间/渤海海域Key words
reservoir characteristics/lacustrine carbonate reservoir/bioclastic dolostone/reservoir space/Bohai Sea分类
地质学引用本文复制引用
王少鹏,张建民,许聘,陈国成,吕世聪..渤海CF油田古近系湖相碳酸盐岩储层特征[J].地质科技情报,2018,37(4):106-112,7.基金项目
国家科技重大专项"渤海海域大中型油气田地质特征"(2011ZX05023-006-002) （2011ZX05023-006-002）
