本文關(guān)鍵詞： 敖155區(qū)塊 井震結(jié)合 儲(chǔ)層預(yù)測(cè) 匹配追蹤 地震屬性　出處：《東北石油大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：敖155區(qū)塊是大慶油田勘探評(píng)價(jià)的重點(diǎn)區(qū)域,急需取得產(chǎn)能突破。該區(qū)砂巖層數(shù)多規(guī)模小、油層零散不連續(xù),因此對(duì)于該區(qū)的構(gòu)造研究,及儲(chǔ)層預(yù)測(cè)都成為研究中的重點(diǎn)問題。本文以敖155區(qū)塊為研究中心,通過井震結(jié)合預(yù)測(cè)區(qū)域內(nèi)儲(chǔ)層的分布情況,并給出水平井設(shè)計(jì)建議。本文從構(gòu)造解釋出發(fā),將收集到的兩套地震資料用“四步法”進(jìn)行地震資料對(duì)比分析,并在此基礎(chǔ)上,優(yōu)選最佳地震數(shù)據(jù)體;同時(shí)通過探評(píng)井鉆遇砂體及有效砂體情況,優(yōu)選主力砂體發(fā)育小層;在區(qū)內(nèi)井資料品質(zhì)分析的基礎(chǔ)上,進(jìn)行目的層精細(xì)構(gòu)造解釋。首先開展精細(xì)合成記錄標(biāo)定工作,確定主力小層地震波形響應(yīng)特征,初步分析全區(qū)可追蹤小層;然后進(jìn)行地震地質(zhì)統(tǒng)層處理,明確地震同相軸與測(cè)井分層的合理對(duì)應(yīng)關(guān)系,保證層位追蹤的合理性;利用多種斷層屬性增強(qiáng)技術(shù),精細(xì)刻畫敖155區(qū)塊扶余油層斷裂分布特征;最后利用多條連井地震剖面,確定地震可追蹤層位,構(gòu)建格架解釋方案,最終完成區(qū)塊1*1CDP全三維構(gòu)造解釋;進(jìn)而利用“層控+偽井”變速成圖技術(shù),編制主力砂體小層頂面深度構(gòu)造圖,為水平井部署提供指導(dǎo)。為對(duì)儲(chǔ)層的空間展布特征準(zhǔn)確落實(shí),首先對(duì)地震資料進(jìn)行相位分析,確定相移處理的適用性,其次利用井點(diǎn)鉆遇砂巖厚度進(jìn)行多屬性交匯分析,優(yōu)選出與砂巖厚度吻合率較高的平均振幅屬性及流體活動(dòng)性地震屬性,進(jìn)行定性砂體分布預(yù)測(cè)。然后采用基于波阻抗重構(gòu)的地質(zhì)統(tǒng)計(jì)學(xué)反演預(yù)測(cè)及基于神經(jīng)網(wǎng)絡(luò)的多屬性地震反演進(jìn)一步定量預(yù)測(cè)砂巖分布情況;定量的描述了各小層砂體規(guī)模,綜合分析FⅠ1、FⅠ3、FⅠ5、FⅡ1和FⅡ2五個(gè)小層屬地震性及反演預(yù)測(cè)成果,同時(shí)結(jié)合構(gòu)造形態(tài)、地震資料品質(zhì)范圍及砂巖與有效砂巖厚度,明確了有利砂體的展布范圍,優(yōu)選了有利砂體發(fā)育區(qū),為下一步水平井部署區(qū)的選擇提供依據(jù)。
[Abstract]:Ao155 block is the key area of exploration and evaluation in Daqing Oilfield, which is in urgent need of productivity breakthrough. The sandstone layers in this area are small in size and the oil layers are scattered and discontinuous, so the structure of this area is studied. In this paper, Ao155 block is taken as the research center, and the distribution of reservoir in the area is predicted by combining well and earthquake. Based on the structural interpretation, the two sets of seismic data collected are compared and analyzed by "four-step method", and on this basis, the optimum seismic data volume is selected. At the same time, the main sand body is selected to develop a small layer by exploring and evaluating well drilling encounter sand body and effective sand body situation; Based on the analysis of the quality of well data in the area, the fine structure interpretation of the target layer is carried out. Firstly, the calibration of the fine composite records is carried out to determine the seismic waveform response characteristics of the main sub-layers, and the trace sub-layers are preliminarily analyzed in the whole area. Then the seismic geological series layer processing is carried out to make clear the reasonable correspondence relationship between seismic cophase axis and logging stratification to ensure the rationality of horizon tracing. The fault distribution characteristics of Fuyu oil layer in Ao155 block are accurately characterized by various fault attribute enhancement techniques. Finally, the seismic traceable horizon is determined by using multiple seismic profiles, and the grid frame interpretation scheme is constructed, and the complete 3D structural interpretation of block 1C ~ (DP) is completed. Furthermore, by using the variable velocity mapping technique of "stratified pseudo-well", the depth structural map of the top surface of the main sand body is compiled, which provides guidance for the horizontal well deployment and accurately implements the spatial distribution characteristics of the reservoir. Firstly, the phase analysis of seismic data is carried out to determine the applicability of phase shift processing, and then the multi-attribute intersection analysis is carried out by using well point drilling and sandstone thickness. The average amplitude attribute and fluid active seismic attribute with high coincidence rate with sandstone thickness are selected. Then geostatistical inversion based on wave impedance reconstruction and multi-attribute seismic inversion based on neural network are used to predict the distribution of sandstone quantitatively. The size of sand bodies in each sublayer is described quantitatively, and the five layers F 鈪，

本文編號(hào)：1460376