【摘要】：長豐鎮(zhèn)構(gòu)造帶位于文安斜坡的中南部,是文安斜坡四個鼻狀構(gòu)造帶之一,為文安斜坡的產(chǎn)油區(qū)帶和最有勘探潛力的區(qū)帶之一。目前在東部的S88井區(qū)、W96井區(qū)已獲得工業(yè)油流并建成油田,在西部的WG3井處也發(fā)現(xiàn)工業(yè)油流,展現(xiàn)了長豐鎮(zhèn)構(gòu)造帶具有良好的油氣勘探開發(fā)前景。但受研究精度的影響,對研究區(qū)砂體的展布規(guī)律,特別是含油氣砂體的展布規(guī)律認(rèn)識不清,未能準(zhǔn)確的對沉積微相的展布特征進(jìn)行分析研究,使長豐鎮(zhèn)構(gòu)造帶成為文安斜坡四個鼻狀構(gòu)造帶中開發(fā)程度最低的構(gòu)造帶,嚴(yán)重地制約著文安斜坡的評價建產(chǎn)工作。本文以經(jīng)典層序地層學(xué)理論為指導(dǎo),對長豐鎮(zhèn)構(gòu)造帶沙二段地層進(jìn)行了層序界面的識別與閉合,根據(jù)測井曲線和錄井資料識別出初始湖泛面和最大湖泛面,并以此為依據(jù)將沙二段地層劃分為兩個層序,并細(xì)分為四個體系域。以研究區(qū)12口取心井的觀察與描述為基礎(chǔ),結(jié)合研究區(qū)目的層段測井曲線的特征,分析總結(jié)出適合研究區(qū)目的層段的測井相模板,并以此為基礎(chǔ)對單井沉積微相進(jìn)行了分析研究,識別出三角洲平原環(huán)境下的分流河道、天然堤、分流河道間以及三角洲前緣環(huán)境下的水下分流河道、水下天然堤、水下分流河道間等沉積微相。結(jié)合以地震屬性為代表的地球物理資料以及砂體平面展布特征,對長豐鎮(zhèn)構(gòu)造帶沙二段地層的沉積相進(jìn)行了研究,并結(jié)合現(xiàn)在已有生產(chǎn)情況對研究區(qū)內(nèi)的油藏情況進(jìn)行了分析,從而提出了長豐鎮(zhèn)構(gòu)造帶的有利油氣發(fā)育區(qū)域。
[Abstract]:The Changfengzhen structural belt is located in the central and southern part of the Wenan slope. It is one of the four nose-shaped structural belts on the Wenan slope and is one of the oil-producing zones and one of the most promising zones in the Wenan slope. At present, in S88 well area in the east, W96 well area has obtained industrial oil flow and built oil field, and industrial oil flow has also been found in WG3 well in the west, which shows that Changfeng structural belt has good prospects for oil and gas exploration and development. However, due to the influence of research precision, the distribution law of sand bodies, especially oil-bearing sand bodies, is not well understood, and the distribution characteristics of sedimentary microfacies are not accurately analyzed and studied. The Changfengzhen structural belt is the least developed of the four nasal structural belts of Wenan slope, which seriously restricts the evaluation and production of Wenan slope. Based on the classical sequence stratigraphy theory, the sequence interface of the second member of the Sha member of the Changfengzhen structural belt is recognized and closed. Based on the log curves and logging data, the initial lake flooding surface and the maximum lake flooding surface are identified. The formation of the second member of the Shahejie formation is divided into two sequences and subdivided into four system tracts. Based on the observation and description of 12 coring wells in the study area, combined with the characteristics of the logging curves of the target interval in the study area, the logging facies template suitable for the target interval in the study area is analyzed and summarized. Based on this, the sedimentary microfacies of single well are analyzed and studied, and the distributary channel, natural embankment, underwater distributary channel and underwater natural embankment in delta plain environment are identified. Isodepositional microfacies between subaqueous distributary channels. Based on the geophysical data represented by seismic attributes and the distribution characteristics of sand bodies, the sedimentary facies of the formation of the second member of the Sha member in the Changfengzhen structural belt are studied, and the reservoir conditions in the study area are analyzed in the light of the existing production conditions. Therefore, the favorable oil and gas development area of Changfengzhen structural belt is put forward.
【學(xué)位授予單位】：中國地質(zhì)大學(xué)(北京)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P618.13

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