【摘要】：樹2區(qū)塊位于榆樹林油田南部,主要開發(fā)的扶楊油層屬于三類油層,1995年開始注水開發(fā),逐漸暴露出水井注入難、油井采出難,層間和平面非均質(zhì)性嚴重,由于井距過大油水井不能建立有效驅(qū)替系統(tǒng),產(chǎn)量遞減幅度大等諸多問題。為了改善樹2區(qū)塊開發(fā)效果,進一步深化區(qū)塊地質(zhì)特征認識,對該區(qū)塊開展精細油藏描述研究,明確區(qū)塊非均質(zhì)程度,圈定剩余油相對富集部位,為高效開發(fā)剩余油、有效提高采油速度和采收率提供地質(zhì)依據(jù)。本文通過對樹2區(qū)塊巖心及測井資料進行整理,采取旋回對比分級控制,不同相帶區(qū)別對待的方法,完成6條骨架剖面閉合對比,最終實現(xiàn)182口井扶楊油層精細劃分對比,建立起區(qū)塊地層格架;在精細制作172口合成記錄基礎(chǔ)上,結(jié)合高分辨率相干體斷層識別技術(shù),井震結(jié)合完成工區(qū)多層系小斷層的刻畫,以油層組頂面構(gòu)造作為趨勢面,應(yīng)用單井小層砂體頂面數(shù)據(jù),在7個主力層識別正向微構(gòu)造25個,負向微構(gòu)造29個;通過調(diào)研和本次研究認為,研究區(qū)扶楊油層為淺水河流三角洲沉積體系,綜合探井報告、巖心及測井曲線確定了各層沉積亞相環(huán)境,建立4類亞相15類微相測井相模式,完成樹2區(qū)塊68個沉積單元沉積微相平面組合;通過計算機技術(shù)、地質(zhì)和數(shù)學等多學科綜合技術(shù)有機結(jié)合對三維油藏進行精細地質(zhì)建模,垂向匹配64個沉積單元,建立相控模型;最后運用地質(zhì)方法結(jié)合動態(tài)油水井分析把研究區(qū)剩余油分為五類,其中以有采無注型和單向受效型剩余油為主,縱向上主要分布于FⅠ61、FⅠ72、YⅡ72、YⅡ61、YⅡ41沉積單元,基于這些研究成果可以進一步為油田開發(fā)提供堅實的地質(zhì)基礎(chǔ)。
[Abstract]:Block 2 is located in the south of Yushulin Oilfield. The Fuyang reservoir, which is mainly developed, belongs to three types of reservoirs. It began to be developed by water injection in 1995, and gradually exposed the difficulties of injection of wells, production of oil wells, and serious heterogeneity between layers and planes. Because the well spacing is too large, the effective displacement system can not be established, and the production decline range is large. In order to improve the development effect of block Shu-2 and further deepen the understanding of geological characteristics of the block, the fine reservoir description of the block is carried out, the degree of heterogeneity of the block is determined, the relative enrichment position of remaining oil is delineated, and the remaining oil is developed efficiently. Effectively improve the oil recovery speed and oil recovery to provide geological basis. In this paper, the core and logging data of Block Shu-2 are sorted out, and the closed correlation of 6 skeleton sections is completed by adopting the method of cyclic correlation grading control and different phase zones, and the fine division and correlation of 182 wells Fuyang oil reservoir are realized. On the basis of fine making 172 synthetic records, combining with high resolution coherent block fault recognition technology, well and earthquake combined to complete the description of multi-layer small faults in the working area, taking the top structure of oil formation as the trend surface, Based on the single well small layer sand body top surface data, 25 forward microstructures and 29 negative microstructures are identified in 7 main layers. Through investigation and this study, it is concluded that Fuyang oil formation in the study area is a shallow river delta sedimentary system, and a comprehensive exploration well report. The core and log curves determine the sedimentary subfacies environment of each layer, establish four subfacies and 15 microfacies logging models, complete the sedimentary microfacies plane assemblage of 68 sedimentary units in block Shu 2. The fine geological modeling of 3D reservoir is carried out by combining geology and mathematics, and 64 sedimentary units are matched vertically, and the facies control model is established. In the end, the remaining oil in the study area is divided into five categories by geological method and dynamic oil-water well analysis. The remaining oil in the study area is mainly composed of non-injectable and unidirectional residual oil, which is mainly distributed in F 鈪，

本文編號：2228365