【摘要】：蘇德爾特地區(qū)位于貝西和貝中生油洼槽之間,是在布達特地層古隆起的基礎(chǔ)上發(fā)育的受斷裂控制的繼承性“凹中隆”構(gòu)造,具有很大的勘探潛力�，F(xiàn)有的成藏認識已不能滿足和指導(dǎo)勘探工作,必須充分利用已有資料結(jié)合最新動態(tài)資料開展精細成藏研究。研究區(qū)目的層為侏羅系興安嶺地層,屬于斷陷期地層,構(gòu)造復(fù)雜。本文以層序地層學(xué)為指導(dǎo),充分結(jié)合鉆井、測井和地震資料,進行精細地層劃分對比,建立地層格架。基于井震結(jié)合思想,以合成地震記錄為橋梁,采用相干體、三維可視化等技術(shù)手段完成蘇德爾特地區(qū)X0、XI、XII、XIII、XIV、BI頂面六個反射界面的精細層位和斷層解釋,通過建立高精度空變速度場完成構(gòu)造圖的制作,進行了蘇德爾特地區(qū)構(gòu)造特征分析。開展全區(qū)曲線敏感性分析,選取對本區(qū)儲層敏感的測井曲線,根據(jù)測井曲線的不同頻率尺度能反映不同沉積特征的特點,開展蘇德爾特地區(qū)擬波阻抗重構(gòu)反演,完成了重點油層XI和XII儲層預(yù)測研究,完成了26小層砂巖預(yù)測厚度分布圖,后驗井砂巖預(yù)測厚度符合率為76.7%,儲層預(yù)測效果較好。綜合巖心、錄井、測井等資料,結(jié)合研究區(qū)沉積背景和地震反演研究成果,確定該區(qū)沉積相類型,建立測井相模式,進行單井相和連井相分析,開展興安嶺重點儲層XI和XII各小層沉積相研究,完成26個小層沉積微相特征研究。從烴源巖評價、儲層特征、油氣運移和油水分布特征等方面,開展了研究區(qū)成藏條件研究,總結(jié)了研究區(qū)的油藏類型和主控因素,確定了研究區(qū)興安嶺地層的成藏模式。以構(gòu)造、反演、沉積和成藏研究成果為基礎(chǔ),根據(jù)儲層發(fā)育特征及油氣富集規(guī)律,優(yōu)選出重點有利區(qū),在此基礎(chǔ)上,完成目標井位部署。通過對蘇德爾特地區(qū)的精細地震解釋和儲層預(yù)測研究,取得如下認識:蘇德爾特地區(qū)興安嶺地層構(gòu)造形態(tài)呈南北分帶、東西分塊的構(gòu)造格局,斷裂發(fā)育密集,構(gòu)造復(fù)雜,主干斷裂對油氣的運聚具有明顯的控制作用。中央隆起區(qū)儲層最為發(fā)育,砂巖具有厚度大、層數(shù)多、各層分布差異大的特征。蘇德爾特地區(qū)興安嶺地層沉積過程中總體上表現(xiàn)為水進特征,油層組內(nèi)部湖水進退頻繁,物源主要來自北部、東部以及南部隆起區(qū),沉積微相類型為水下分流河道、河道間、河口壩、席狀砂、前緣席狀砂、濁積和湖相沉積。該區(qū)成藏主控因素為儲層條件、油源斷層以及油源斷層、局部構(gòu)造和砂體之間的匹配關(guān)系,成藏模式包括油氣沿砂體和油源斷層近距離運移成藏、沿不整合面?zhèn)认蜻\移至油源斷層高部位的遠距離成藏和多源供烴沿不整合面、砂體及油源斷層運聚成藏。
[Abstract]:The Sirte area is located between the Besi and Beizhong oil generating troughs, and is a inherited fault-controlled "depression" structure developed on the basis of the paleouplift of the Bud 茅 te formation, which has great potential for exploration. The existing understanding of reservoir formation can not satisfy and guide exploration work, so it is necessary to make full use of the existing data and combine the latest dynamic data to carry out fine reservoir formation research. The target layer of the study area is the Jurassic Xinganling formation, which belongs to the faulted strata and is complicated in structure. Guided by sequence stratigraphy, this paper combines drilling, logging and seismic data to carry out fine stratigraphic division and correlation and to establish stratigraphic framework. Based on the idea of combining well and earthquake, using synthetic seismogram as bridge, using coherent volume, 3D visualization and other techniques, the fine horizon and fault interpretation of six reflection interfaces on the top surface of X0XINXIIINXIIINXIIIXIVA BI in the Sirte area are completed. The structural characteristics of the Sirte area are analyzed by establishing the high precision velocity field of the spatial variable to complete the construction map. The sensitivity analysis of the whole area curve is carried out, and the logging curves sensitive to the reservoir in this area are selected. According to the characteristics of the different frequency scales of the logging curves, the pseudo wave impedance reconstruction inversion in the Sirte area is carried out according to the characteristics of the different sedimentary characteristics of the logging curves. The prediction of XI and XII reservoirs in key reservoirs has been completed, and the predicted thickness distribution map of 26 small layers sandstone has been completed. The coincidence rate of prediction thickness of post-test sandstone is 76.7, and the reservoir prediction effect is better. Based on the core, logging and logging data, combined with the sedimentary background and seismic inversion results in the study area, the types of sedimentary facies in the study area were determined, the logging facies model was established, and the single well facies and continuous well facies were analyzed. The sedimentary facies of Xi and XII layers in Xinganling key reservoirs were studied, and the sedimentary microfacies characteristics of 26 layers were studied. From the aspects of source rock evaluation, reservoir characteristics, hydrocarbon migration and oil-water distribution, the study of reservoir forming conditions in the study area is carried out, and the reservoir types and main controlling factors in the study area are summarized, and the reservoir forming model of Xinganling formation in the study area is determined. Based on the research results of structure inversion sedimentation and reservoir formation the key favorable areas are selected according to the reservoir development characteristics and the law of oil and gas enrichment. On this basis the target well location deployment is completed. Through the study of fine seismic interpretation and reservoir prediction in the Sirte area, the following conclusions have been obtained: the stratigraphic structure of Xinganling in the Sirte area is divided into the north and the south, the tectonic pattern of the east-west block is divided, the faults are densely developed and the structure is complex. The main fault has obvious controlling effect on oil and gas migration and accumulation. The reservoir in the central uplift area is the most developed, and the sandstone has the characteristics of large thickness, more layers and great difference in distribution of each layer. The sedimentary process of Xinganling formation in the Sirte area is characterized by water flow in general, the lake water in the reservoir group is frequent, and the provenance mainly comes from the northern, eastern and southern uplift areas. The sedimentary microfacies type is subaqueous distributary channel and interchannel, and the sedimentary microfacies are subaqueous distributary channel and interchannel. Estuary dam, sheet sand, front sheet sand, turbidite and lacustrine deposit. The main factors of reservoir formation in this area are reservoir condition, oil source fault and oil source fault, matching relation between local structure and sand body. Long distance accumulation and accumulation of multi-source hydrocarbon supply along unconformity surface, sand body and oil source fault.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：P618.13;P631.4

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