本文選題：大凌河油層　切入點(diǎn)：沉積微相　出處：《東北石油大學(xué)》2017年碩士論文

【摘要】：本文在充分應(yīng)用鉆井、測(cè)井資料的基礎(chǔ)上,結(jié)合區(qū)域地質(zhì)背景、沉積條件和成巖特征,對(duì)曙1-38-32塊大凌河油層儲(chǔ)層特征進(jìn)行了系統(tǒng)的研究。本次研究過(guò)程中,依據(jù)“旋回對(duì)比,分級(jí)控制”的地層對(duì)比與劃分原則,以主要標(biāo)志層控制含油層段的頂?shù)?依據(jù)輔助標(biāo)志層劃分油層組、砂巖組,沉積韻律細(xì)分小層;以巖石學(xué)、沉積學(xué)、巖心資料為基礎(chǔ),確定沉積相模式,劃分測(cè)井相,研究沉積微相的縱向演化及平面展布規(guī)律;開(kāi)展了儲(chǔ)層特征的精細(xì)刻畫(huà),明確了儲(chǔ)層四性關(guān)系、隔夾層分布、非均質(zhì)性、微觀(guān)孔隙結(jié)構(gòu)特征。通過(guò)研究認(rèn)為:研究區(qū)大凌河油層段處于近岸重力流水下扇的扇根→扇中部位,儲(chǔ)層主要為分流水道砂體;研究區(qū)沉積物來(lái)源于遼河斷陷西部凹陷西側(cè)的西部凸起,組成巖石的礦物成分為石英、長(zhǎng)石、巖屑,巖屑成分主要為火成巖,巖石的成份成熟度及結(jié)構(gòu)成熟度較低;研究區(qū)大凌河油層砂體平面上連片分布,單井厚度平均70m左右,在中部砂巖厚度最大,向四周逐漸減薄;砂巖膠結(jié)類(lèi)型主要是基底式,孔隙式膠結(jié)僅限于細(xì)小的顆粒之間;儲(chǔ)層屬高孔、高滲儲(chǔ)層,孔隙類(lèi)型以以原生的粒間孔為主,裂縫為輔,儲(chǔ)層喉道屬于中~粗喉結(jié)構(gòu);油層砂體內(nèi)部基本無(wú)穩(wěn)定泥巖夾層分布,夾層在砂體內(nèi)的延伸距離一般小于井距之半,為不穩(wěn)定夾層,呈小的透鏡狀分布,夾層層數(shù)較少;該塊大Ⅰ2~Ⅲ1儲(chǔ)層非均質(zhì)性弱,大Ⅰ1儲(chǔ)層非均質(zhì)性中等,大Ⅲ2儲(chǔ)層非均質(zhì)性強(qiáng)。
[Abstract]:Based on the full application of drilling and logging data, combined with regional geological background, sedimentary conditions and diagenetic characteristics, this paper systematically studies the reservoir characteristics of Daling River reservoir in block Shu 1-38-32. According to the principle of stratigraphic correlation and division, the main marker layer is used to control the top and bottom of the oil-bearing formation, according to the auxiliary marker layer, the oil-bearing formation, sandstone formation, sedimentary rhythm subdivision sublayer, based on petrology, sedimentology, core data, etc. Determining sedimentary facies model, dividing well logging facies, studying the longitudinal evolution and plane distribution of sedimentary microfacies, developing fine characterization of reservoir characteristics, defining the relationship of reservoir four properties, separating intercalation distribution, heterogeneity, It is considered that the Daling River oil layer in the study area is located at the fan root of the lower fan of income with gravity in the near shore. 鈫捍n the middle part of fan, the reservoir is mainly composed of distributary channel sand body, the sediment in the study area comes from the western uplift in the west side of the western depression of Liaohe fault depression, and the mineral composition of the rock is composed of quartz, feldspar, lithic, lithic, igneous rock. The composition maturity and structure maturity of rock is low, the sand body of Dalinghe oil reservoir in the study area is distributed on the plane, the average thickness of single well is about 70 m, the thickness of sandstone is the largest in the middle part, and the thickness is gradually thinning around, the type of sandstone cementation is mainly basement type. The pore type cementation is confined to the fine particles, the reservoir belongs to high porosity and high permeability reservoir, the pore type is mainly primary intergranular pore, the fracture is auxiliary, the reservoir throat belongs to the middle to coarse throat structure. There is basically no stable mudstone intercalation distribution in the sand body of oil reservoir, the extension distance of intercalation in sand body is generally less than half of well spacing, it is unstable intercalation, it is small lenticular distribution, the intercalation layer number is less, the heterogeneity of reservoir 鈪，

本文編號(hào)：1666774