本文選題：東營凹陷 + 沙四段　； 參考：《中國石油大學(華東)》2015年碩士論文

【摘要】：研究區(qū)位于東營凹陷南斜坡的東段,地理位置處于山東省東營市東營區(qū)以南,廣饒縣東北,研究區(qū)構造位置處于丁家屋子構造帶與八面河構造帶之間。研究目的層段為沙河街組沙四段,重點研究層段為沙四上亞段,地層埋深1250-1750m,地層厚度400-500m。本文以經(jīng)典層序地層學理論為指導,綜合應用巖心、測井、錄井、地震及其它分析化驗等資料,尋找在巖性、沉積相組合、電測曲線上、地震反射特征上產(chǎn)生的特殊響應,作為識別層序邊界的良好標志,建立標準層,劃分地層層序,建立研究區(qū)層序地層格架。將沙四上亞段劃分為一個三級層序,建立了研究區(qū)沙四上亞段純上段頂界T6’、底界T7、純下段底界T7’,以及各砂組和小層的對比標準,將沙四上亞段細分為純上亞段與純下亞段,其中,純上亞段分為6個砂層組,純下亞段分為3個砂層組。本論文以沉積學理論為指導,確定了全區(qū)的典型巖心相標志,結合測井資料建立了對應的測井相標志,對各種沉積相及微相類型進行了精細劃分,確定其中主要包括三角洲前緣相、碎屑巖灘壩相、碳酸鹽灘壩相、濱淺湖相。通過巖心單井相、單井相綜合分析、連井相和平面相分析等,確定研究區(qū)沉積相的展布特征,建立沉積相模式。研究區(qū)主要沉積相為灘壩沉積相,重點研究了灘壩砂體空間分布規(guī)律,明確了灘壩砂體的沉積特征及控制因素。認為灘壩砂體的形成與分布主要受古地貌、古物源、古水深和古水動力的控制作用。
[Abstract]:The study area is located in the east section of the south slope of Dongying Sag, located south of Dongying District, Shandong Province, and northeast of Guangrao County. The research area is located between the Dingjiahouse structural belt and the Bamianhe structural belt. The aim of the study is Shahejie formation, the fourth member of Shahejie formation, and the focus of the study is the upper part of Shahejie formation, with a depth of 1250-1750m and a thickness of 400-500m. Guided by the classical sequence stratigraphy theory, this paper synthetically applies core, logging, seismic and other analytical and laboratory data to search for special responses to seismic reflection characteristics in lithology, sedimentary facies assemblage and electrical logging curves. As a good sign to identify the sequence boundary, the standard layer is established, the stratigraphic sequence is divided and the sequence stratigraphic framework of the study area is established. In this paper, the upper submember of S4 is divided into a third order sequence, and the correlation criteria for the top boundary T6, bottom boundary T7, pure lower member T7 of pure upper member of the upper member of Sha 4 in the study area are established, as well as the correlation criteria of each sand formation and substratum. The upper submember of Sha 4 is subdivided into pure upper submember and pure lower submember, in which the pure upper submember is divided into 6 sand formations and the pure lower submember is divided into 3 sand formation groups. Under the guidance of sedimentology theory, the typical core facies marks in the whole area are determined, and the corresponding logging facies indicators are established in combination with logging data, and various sedimentary facies and microfacies types are carefully divided. It is determined that there are delta front facies, clastic beach dam facies, carbonate beach dam facies and shallow lacustrine facies. The distribution characteristics of sedimentary facies in the study area are determined and the sedimentary facies model is established by comprehensive analysis of core single well facies and even surface analysis of even well facies. The main sedimentary facies in the study area are beach and dam sedimentary facies. The spatial distribution law of beach bar sand body is studied emphatically, and the sedimentary characteristics and controlling factors of beach dam sand body are clarified. It is considered that the formation and distribution of sand bodies are mainly controlled by paleogeomorphology, ancient source, paleo water depth and paleohydrodynamic force.
【學位授予單位】：中國石油大學(華東)
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P618.13

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本文編號：2021582