高北斜坡带沙三段优势储层相控特征  

The Advantaged Reservoir Characteristics under Facies Control and Forecast of Ed_3 in Gaobei Slope

作　　者：赵晓东[1] 李亮[1] 刘晓[1] 王时林[1] 孙琳[2] 

机构地区：[1]中国石油冀东油田勘探开发研究院,唐山063000 [2]中国石油冀东油田陆上作业区,唐山063000

出　　处：《科学技术与工程》2017年第4期40-47,69,共9页Science Technology and Engineering

基　　金：国家科技重大专项(2016ZX05006-006);中石油股份公司科技重大专项(2014E-050211)资助

摘　　要：根据钻井岩心、薄片、物性数据等资料,对高北斜坡带沙三段岩性储层特征进行分析,并探讨优势储层与沉积微相的关系。高北斜坡带沙三段岩石类型主要为岩屑长石砂岩、长石岩屑砂岩,不稳定组分长石和岩屑含量占50%以上。储集空间主要以原生孔隙和次生孔隙为主,喉道类型主要发育缩颈型喉道和管束状喉道,储层孔喉组合类型划分为Ⅰ-中孔细喉型、Ⅱ-小孔细喉型、Ⅲ-紧密胶结微孔型等3类,其中Ⅰ和Ⅱ为高北斜坡带优势储层。研究表明:优势储层分布具有明显的相控特点,Ⅰ类储层以水下分流河道为主,Ⅱ类储层以水下分流河道和河口坝为主,Ⅲ类储层以远砂坝为主,同时利用正演模拟明确Ⅰ、Ⅱ、Ⅲ三类储层的地震响应特征,精确优势储层发育区,初步形成"孔喉组合-沉积-地震"微宏观一体技术,近3年在高北斜坡带共刻画岩性圈闭16个,发现高66、高3104-5和高123x9等3个富油区块,新增探明储量1 128.0×10~4t,动用地质储量258.2×10~4t。Based on the drilling cores, thin sections and physical property data, the reservoir characteristics of Ed3 in the Gaobei Slope have been studied to analyze the relationship between the advantage of reservoir and sedi-mentary microfacies. The rock types of Ed3 in the Gaobei Slope are mostly lithic arkose, feldspathic lithic sand-stone. The volatile components of feldspar and lithic content more than 50%. The reservoir spaces are mainly of pri-mary pore and secondary pore, the throat types main contain the necking throat and the control shape throat. The combination types of reservoir pore and throat are divided into I-mesopore leptothroat, II - fine pore-leptothroat and IH-Closely cementingpore-microthroat, the I and II type are the advantaged reservoir in the Gaobei Slope. The study shows that the advantaged reservoir distribution is highly controlled by sedimentary microfacies. I-type reser-voir is mainly underwater distributary channel. I[-type reservoir is mainly underwater distributary channel and estu-ary dam. IH-type reservoir is mainly distal bar. The seismic response characteristics of three types reservoir have been studied through forward modeling. The development areas of the advantaged reservoir also have been con-firmed. The micro macro integration technology of pore-throat, sedimentary, and seismic has initially established. In the latest 3 years, 16 lithologic traps have been described in the Gaobei Slope. The G66, G3104-5 and G123x9 3 rich oil blocks have been found, which increases new proved reserves 1 128. 9 × 10^4 t, the producing geological reserves 258.2 × 10^4 t.

关 键 词：高北斜坡带 沙三段 优势储层 岩性圈闭 孔喉组合-沉积-地震 

分 类 号：TE122.1[石油与天然气工程—油气勘探]