本文選題：方正斷陷 + 大羅密-興旺地區(qū)　； 參考：《吉林大學(xué)》2015年碩士論文

【摘要】：方正斷陷位于依-舒地塹中北段，為一個雙斷式斷陷，被認(rèn)為是中國東北部構(gòu)造最為復(fù)雜的陸相斷陷盆地，由于其地質(zhì)條件復(fù)雜，大量油氣資源尚待開發(fā)。大羅密-興旺地區(qū)位于方正斷陷東北部，近年來首次發(fā)現(xiàn)產(chǎn)量較高的工業(yè)油氣流，在此之后開始深入探索該地區(qū)的生油氣潛力。對該地區(qū)沉積相進行精細刻畫、研究沉積相帶展布規(guī)律及演化特征，將對研究區(qū)的油氣勘探遠景有著重要的現(xiàn)實意義。 本文結(jié)合前人研究成果，綜合應(yīng)用鉆井、測井、地震等資料，對研究區(qū)進行了區(qū)域地質(zhì)研究、層序地層劃分與對比、沉積相類型識別與劃分以及沉積相分布特征研究。在區(qū)域地質(zhì)研究方面，詳細查明了方正斷陷地層發(fā)育情況以及6個構(gòu)造演化階段；在地層劃分與對比方面，對研究區(qū)進行了三級層序和體系域的劃分，并分別對單井和連井剖面層序地層進行了詳細的分析，建立了等時層序地層格架；在沉積相類型識別方面，識別出研究區(qū)發(fā)育扇三角洲、湖泊和湖底扇3種沉積相，進一步將這三種沉積相劃分為8種沉積亞相和16種沉積微相類型；在沉積相分布特征研究方面，對研究區(qū)典型鉆井進行了詳細的沉積相分析，建立了連井沉積剖面，在此基礎(chǔ)上進行了平面相分析，論述了沉積相平面展布特征及演化規(guī)律。 新安村+烏云組整體構(gòu)成一個由細到粗的沉積旋回，早期湖泊相沉積發(fā)育，形成了該組下部的暗色泥巖，晚期物源充足，發(fā)育規(guī)模較大的扇三角洲沉積，湖泊區(qū)部分區(qū)域發(fā)育湖底扇沉積，二者對儲集巖的分布具有一定的貢獻作用，總體來說該時期構(gòu)成了水系發(fā)育的扇三角洲-濱淺湖-半深湖沉積體系。寶泉嶺組一段和寶泉嶺組二段時期研究區(qū)經(jīng)歷了水體逐漸加深的過程，寶泉嶺組一段區(qū)內(nèi)發(fā)育小范圍扇三角洲，到寶泉嶺組二段時期達到最大湖泛面，湖相沉積面積擴大，形成大范圍湖相暗色泥巖，扇三角洲面積減小，寶泉嶺組二段后期湖盆有所回縮，物源供給能力增強。寶泉嶺組三段時期斷陷進入萎縮期，水體變淺。
[Abstract]:Fangzheng rift is located in the north section of the middle section of the Yi Shu graben and is a double faulted fault depression. It is considered to be the most complex continental fault basin in northeastern China. Due to its complex geological conditions, a large amount of oil and gas resources are still to be developed. The great ROMI Xing Wang area is located in the northeast of Fangzheng fault depression. After this, the potential of oil and gas in this area has been deeply explored. The fine depiction of the sedimentary facies in this area and the study of the distribution and evolution characteristics of the sedimentary facies will be of great practical significance to the prospect of oil and gas exploration in the study area.
In this paper, combined with the previous research results and comprehensive application of drilling, logging, and earthquake data, regional geological research, sequence stratigraphic division and comparison, identification and division of sedimentary facies types and the distribution characteristics of sedimentary facies are carried out in the study area. In the area of regional geological research, the development of the fangzheng fault formation and 6 tectonic performances have been found out in detail. In the stratigraphic division and the stratigraphic division and contrast, the three sequence and the system domain are divided in the study area, and the sequence stratigraphy of the single well and the even well section is analyzed in detail, and the isochronous sequence stratigraphic framework is established. In the aspect of the type identification of the sedimentary facies, the deltaic fan delta, the lake and the lake bottom fan are identified. The three sedimentary facies are further divided into 8 sedimentary subfacies and 16 types of sedimentary microfacies. In the study of the distribution characteristics of the sedimentary facies, the detailed sedimentary facies analysis is carried out for the typical drilling in the study area, and the continuous well sedimentary section is established. On this basis, the plane phase analysis is carried out, and the characteristics and evolution of the sedimentary facies are discussed. Law.
The Xin'an village + Wu Yun formation consists of a fine to coarse sedimentary cycle, the early lake facies deposits and development, the formation of the dark mudstone in the lower part of the group, the abundant source in the late stage, the large fan delta deposit, and the lake bottom fan deposits in some regions of the lake area. The two groups have a certain contribution to the distribution of the reservoir rock. The period of this period constitutes the fan delta, the shallow lake and the half deep lake sedimentary system developed in the water system. The two section of the Bao Ching formation and the Bao Quan Ling formation has experienced the gradual deepening of the water body. The small range fan delta developed in the first section of the Bao Ching formation, to the two section of the Bao Quan formation to the maximum lake surface, and the area of the lacustrine sedimentary area expanded. The area of lacustrine dark mudstone is large and the area of fan delta decreases. In the late two stages of the Bao Quan formation, the lake basin is retracted and the supply capacity of the source is increased. In the three stages of the Bao Quan formation, the depression entered the atrophy period and the water body became shallow.

【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P618.13

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本文編號：1890000