本文選題：遼河西部凹陷 + 蒸汽驅(qū)試驗(yàn)區(qū)�。� 參考：《地質(zhì)科技情報(bào)》2017年01期

【摘要】：研究區(qū)位于遼河油田某蒸汽驅(qū)試驗(yàn)區(qū)內(nèi)。以該地區(qū)于樓油層扇三角洲前緣砂體為研究對(duì)象,綜合400口井測(cè)井資料、6口取心井資料及多種測(cè)試資料,對(duì)該地區(qū)儲(chǔ)層非均質(zhì)性進(jìn)行了定性及定量的精細(xì)表征,分析了非均質(zhì)性的主控因素及分布規(guī)律,探討了非均質(zhì)性對(duì)儲(chǔ)層開發(fā)的影響,并提出了相應(yīng)的開發(fā)調(diào)整建議。結(jié)果表明,研究區(qū)夾層發(fā)育泥質(zhì)夾層、物性夾層及成巖膠結(jié)夾層,夾層頻率介于0.052~0.17層/m;隔層發(fā)育泥質(zhì)隔層,平均厚度為1.52~3.84m;主力油層單層平均滲透率變異系數(shù)介于0.59~1.01之間,平均滲透率級(jí)差介于55.51~462.42之間,平均突進(jìn)系數(shù)介于2.37~3.75之間,整體屬于中-強(qiáng)非均質(zhì)性儲(chǔ)層;砂體類型包括水下分流河道、河口砂壩、水下分流河道間砂、水下分流河道間泥及前緣席狀砂,垂向疊置模式包括連通型、弱連通型及不連通型,平面分布模式包括連片狀及條帶狀。非均質(zhì)性整體受控于沉積環(huán)境與沉積動(dòng)力作用的演化過程,如發(fā)育于可容納空間變小時(shí)期的砂體,由于河道側(cè)向遷移及下切能力強(qiáng),非均質(zhì)性較弱。根據(jù)非均質(zhì)性表征結(jié)果,提出了調(diào)剖注汽、分層注汽等開發(fā)調(diào)整建議,為進(jìn)一步擴(kuò)大蒸汽驅(qū)試驗(yàn)及剩余油挖潛提供了堅(jiān)實(shí)的地質(zhì)依據(jù)。
[Abstract]:The study area is located in a steam drive test area in Liaohe Oilfield. Taking the fan delta front sand body in the reservoir area as the research object and synthesizing 400 well logging data and 6 coring wells data and various test data, the reservoir heterogeneity in this area is characterized qualitatively and quantitatively. This paper analyzes the main controlling factors and distribution law of heterogeneity, probes into the influence of heterogeneity on reservoir development, and puts forward corresponding suggestions for development adjustment. The results show that muddy intercalation, physical intercalation and diagenetic cemented intercalation are developed in the study area, the frequency of intercalation is between 0.052 and 0.17 layers / m, the average thickness of muddy intercalation is 1.52 ~ 3.84 m, and the coefficient of variation of permeability of the main reservoir layer is between 0.59 and 1.01. The average permeability difference is between 55.51 and 462.42, the average penetration coefficient is between 2.37 and 3.75, and the sand body type includes underwater distributary channel, estuarine bar, underwater distributary channel sand. The vertical superposition model includes connected type, weakly connected type and disconnected type, and the plane distribution pattern includes connected flake and strip shape, and the subaqueous distributary channel is composed of muddy and front matte sand, and the vertical superposition model includes connected type, weakly connected type and disconnected type. The whole heterogeneity is controlled by the evolution process of sedimentary environment and sedimentary dynamics, such as the sand body developed in the period when the accommodative space becomes smaller, the heterogeneity is weak because of the strong lateral migration and down-cutting ability of the channel. Based on the results of heterogeneity characterization, some suggestions for development adjustment such as profile control and steam injection and stratified steam injection are put forward, which provide a solid geological basis for further expansion of steam drive test and exploitation of remaining oil potential.
【作者單位】： 中國石油勘探開發(fā)研究院;
【基金】：國家科技重大專項(xiàng)(2016ZX05010-001)
【分類號(hào)】：P618.13

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本文編號(hào)：1876859