本文選題：二連盆地 + 哈南地區(qū)�。� 參考：《西南石油大學(xué)》2015年碩士論文

【摘要】：哈南地區(qū)位于二連盆地阿南凹陷東部,在不同層位已發(fā)現(xiàn)多個(gè)油藏,其中阿爾善組四段是哈南地區(qū)最主要的產(chǎn)油層位之一。由于工區(qū)斷塊破碎,為地層劃分與對(duì)比和儲(chǔ)層預(yù)測帶來較大難度,因此加強(qiáng)該區(qū)沉積相研究,無疑對(duì)儲(chǔ)層砂體預(yù)測和油田增儲(chǔ)增產(chǎn)具有重要意義。本文以巖心觀察描述和分析化驗(yàn)資料為基礎(chǔ),通過測井曲線的相標(biāo)定,詳細(xì)分析了阿四段沉積相分布與演化特征和沉積微相與儲(chǔ)層發(fā)育的關(guān)系。得到如下認(rèn)識(shí)： 1、在標(biāo)志層和沉積旋回控制下,將阿四段自下而上劃分為AI下、AI中和AI上三個(gè)砂層組,由于剝蝕作用,三個(gè)砂層組分布面積依次減小,三個(gè)砂層組均呈南、北薄中間厚,東一西向上薄、厚相問的特點(diǎn)。地層厚度變化大,受同沉積斷層和古隆起影響明顯。 2、根據(jù)巖石成分和結(jié)構(gòu)成熟度,結(jié)合古地貌特征,綜合判斷阿四段沉積物源來自蒙古林凸起、蘇尼特隆起和莎音烏蘇凸起。 3、阿四段為近岸水下扇-扇三角洲-湖泊相沉積體系,可進(jìn)一步劃分出六種亞相和十一種微相。近岸水下扇可分為扇根、扇中和扇端三種亞相,發(fā)育的微相包括扇根主水道和主水道間微相,扇中辮狀水道和辮狀水道間微相,以及扇端泥微相。扇三角洲包括扇三角洲前緣和前扇三角洲亞相,扇三角洲平原亞相不發(fā)育,扇三角洲前緣內(nèi)發(fā)育水下分流河道、席狀砂和分流間灣微相,前扇三角洲主要為前扇三角洲泥。此外工區(qū)內(nèi)還有濱淺湖亞相,包括灘壩和濱淺湖泥微相。 4、根據(jù)大量的物性分析資料統(tǒng)計(jì),水下分流河道微相是最有利的儲(chǔ)集相帶,其次為席狀砂,辮狀水道和灘壩則較差。
[Abstract]:The Hanan area is located in the eastern part of Anan depression in Erlian Basin, and several reservoirs have been found in different formations, among which the fourth member of the Alshan formation is one of the most important oil-producing formations in the Hannan area. Due to the fracture of fault blocks in the working area, it is difficult for stratigraphic division and correlation and reservoir prediction. Therefore, it is of great significance to strengthen the study of sedimentary facies in this area for the prediction of reservoir sand body and the increase of reservoir, reservoir and production. Based on core observation description and analysis of laboratory data, the distribution and evolution of sedimentary facies and the relationship between sedimentary microfacies and reservoir development are analyzed in detail through phase calibration of logging curves. The following was recognized: 1. Under the control of marker layer and sedimentary cycle, the A4 member is divided into three sand formations under AI and AI. Due to denudation, the distribution area of the three sand formations decreases in turn, and the three sand formations are all of the thickness of the south and the north. The characteristic of being thin and thick in the east-west direction. The thickness of the strata varies greatly and is obviously influenced by synsedimentary faults and paleouplift. 2. According to the rock composition and structural maturity, combined with the paleogeomorphological features, the sediment sources of the fourth member of the A4 member are from the Mongolia forest uplift, Sunita uplift and Shayinwusu uplift. 3. The A4 formation is a near-shore subaqueous fan delta lacustrine sedimentary system, which can be further divided into 6 subfacies and 11 microfacies. The underwater fan can be divided into three subfacies: fan root, fan and fan end. The microfacies developed include the microfacies of the main fan root channel and the main channel, the microfacies between the braided channel and the braided channel in the fan, and the mud microfacies at the end of the fan. Fan delta consists of fan delta front and front fan delta subfacies, fan delta plain subfacies is not developed, subaqueous distributary channel, sheet sand and interdistributary bay microfacies are developed in fan delta front, and front fan delta is mainly composed of front fan delta mud. In addition, there are shallow lacustrine subfacies in the area, including beach dam and shallow lake mud microfacies. 4. According to a lot of physical analysis data, the microfacies of underwater distributary channel is the most favorable reservoir facies zone, followed by sheet sand, braided channel and beach dam.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P618.13

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本文編號(hào)：1937536