本文關鍵詞： 鶯山斷陷 地震解釋 構(gòu)造特征 有利區(qū)　出處：《東北石油大學》2015年碩士論文　論文類型：學位論文

【摘要】：本文利用三維地震資料,通過人工合成地震記錄進行層位標定,建立層序地層格架,進而完成臨江地區(qū)的地震資料精細解釋工作。在完成解釋工作后,進一步利用速度譜和VSP資料建立速度體,得到各反射層平均速度,將時間剖面與平均速度相乘,最終轉(zhuǎn)化為深度剖面,由于深淺層的構(gòu)造特征不盡相同,因此有必要根據(jù)深淺層的不同特征進行構(gòu)造單元的劃分,同時要對斷裂的發(fā)育特征和分布特征進行概括總結(jié),并在此基礎之上最后完成構(gòu)造樣式和構(gòu)造層的劃分。在完成上述工作后,最后要總結(jié)工區(qū)的生儲蓋等有利條件,完成有利區(qū)預測。鶯山斷陷深層可以劃分為四站古隆起、中部洼槽、東部斜坡和北部低隆四個構(gòu)造單元,淺層則呈現(xiàn)出“西低東高”的主要形態(tài)特征。此外,盆地在早期拉張力的作用下主要構(gòu)造樣式為伸展構(gòu)造,因此在縱向上依次可以劃分為斷陷構(gòu)造層、斷坳轉(zhuǎn)化構(gòu)造層、坳陷構(gòu)造層及反轉(zhuǎn)構(gòu)造層四個構(gòu)造層,其界面分別為營城組頂面、登婁庫組頂面和嫩江組頂面。結(jié)合各反射層層位特點,最終確定伸展構(gòu)造樣式為主要構(gòu)造樣式,在地震剖面上主要表現(xiàn)為產(chǎn)狀斷層及滾動背斜。可以看到四個構(gòu)造層的劃分結(jié)果與拉張斷陷期、斷坳轉(zhuǎn)化期、沉積穩(wěn)定期和構(gòu)造反轉(zhuǎn)期四個盆地演化階段相對應。最后會發(fā)現(xiàn)在早期拉張力的作用下,斷層在斷陷期比較活躍。通過對工區(qū)生儲蓋等有利條件的充分研究,并結(jié)合基底斷裂的構(gòu)造特征,確定工區(qū)南部應該具有控制油氣藏形成的有利條件,同時具有良好的生儲蓋組合及完整的油氣運移通道,所以最終確定有利區(qū)為工區(qū)南部凹陷區(qū)。
[Abstract]:In this paper, using 3D seismic data, the stratigraphic framework of sequence is established by using synthetic seismic records to calibrate the horizon, and the fine interpretation of seismic data in Linjiang area is completed. The velocity body is established by using velocity spectrum and VSP data, and the average velocity of each reflectance layer is obtained. The time profile is multiplied by the average velocity, and the depth profile is transformed into the depth profile, because the tectonic characteristics of the deep and shallow layers are different. Therefore, it is necessary to divide the tectonic units according to the different characteristics of the deep and shallow layers, and at the same time to sum up the development and distribution characteristics of the faults. On this basis, the structural style and the division of tectonic layers are finally completed. After the above work has been completed, it is necessary to summarize the favorable conditions, such as the generation, reservoir and cover, and to complete the prediction of the favorable areas. The deep layers of the Yingshan fault depression can be divided into four stations of paleouplift. The four tectonic units of the central depression, the eastern slope and the northern low uplift show the main morphological characteristics of "west low east high" in the shallow layer. In addition, the main structural style of the basin under the early tension is extensional structure. Therefore, vertically, it can be divided into four structural layers: fault-depression structural layer, fault-depression transformation structural layer, depression structural layer and reverse structural layer, whose interface is the top surface of Yingcheng formation, respectively. The top plane of Denglouku formation and the top surface of Nenjiang formation. According to the characteristics of each reflection layer, the extensional structural style is determined as the main structural style. In the seismic section, the main features are the occurrence fault and the rolling anticline. It can be seen that the division of the four tectonic layers and the extensional fault depression, the fault-depression transformation period, The sedimentary stable period corresponds to the four evolution stages of the tectonic inversion period. Finally, it will be found that the faults are active in the faulting period under the action of early tension. Combined with the structural characteristics of basement faults, it is determined that the southern part of the working area should have favorable conditions to control the formation of oil and gas reservoirs, and at the same time have good source, reservoir and cap assemblages and complete oil and gas migration channels, so it is determined that the favorable area is the south sag of the working area.
【學位授予單位】：東北石油大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P618.13;P631.4

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本文編號：1496265