發(fā)布時(shí)間：2018-04-14 18:34

  本文選題：地震驅(qū)動(dòng)建模方法 + 巖石物理分析��； 參考：《中國(guó)石油大學(xué)(華東)》2015年碩士論文

【摘要】：目前油氣田的勘探開發(fā)程度越來(lái)越高,如何綜合利用地質(zhì)、地震、測(cè)井等多學(xué)科多尺度數(shù)據(jù)資料建立起更高分辨率的三維儲(chǔ)層模型,從而實(shí)現(xiàn)對(duì)儲(chǔ)層分布規(guī)律及其非均質(zhì)的精細(xì)描述,進(jìn)而指導(dǎo)新油氣田的勘探開發(fā)及老油區(qū)剩余油的穩(wěn)產(chǎn)和增產(chǎn),具有十分重要的意義。地震驅(qū)動(dòng)建模方法作為的一種新近提出的井震聯(lián)合建模方法,其在建模過(guò)程中將井?dāng)?shù)據(jù)作為硬數(shù)據(jù)的同時(shí)提出地震數(shù)據(jù)同樣是硬數(shù)據(jù),充分整合利用地震數(shù)據(jù),回避地質(zhì)統(tǒng)計(jì)學(xué)中對(duì)井信息依賴程度高的變差函數(shù)的求取,利用地震數(shù)據(jù)的空間相關(guān)性求取加權(quán)系數(shù),從而大大降低了井網(wǎng)稀疏、井距大以及儲(chǔ)層非均質(zhì)性較強(qiáng)條件下井間物性估計(jì)的不確定性。經(jīng)過(guò)近幾年的不斷研究發(fā)展,地震驅(qū)動(dòng)建模已經(jīng)能夠綜合先驗(yàn)的地質(zhì)認(rèn)識(shí),沉積模式,建立起縱向上與井分辨率一致橫向上與地震數(shù)據(jù)變化一致的高精度三維油藏地質(zhì)模型,但目前還不能直接應(yīng)用到油藏?cái)?shù)值模擬,需要進(jìn)一步將其轉(zhuǎn)化為油藏模型。本文基于地震驅(qū)動(dòng)建模建立的地質(zhì)模型,針對(duì)地質(zhì)模型轉(zhuǎn)化為油藏模型的常規(guī)流程,引入地震油藏閉合循環(huán)的思想。通過(guò)建立巖石物理模型,在常規(guī)的時(shí)深轉(zhuǎn)換和模型粗化轉(zhuǎn)換過(guò)程中嘗試引入地球物理信息。以實(shí)際地質(zhì)模型為基礎(chǔ),分析時(shí)深轉(zhuǎn)換和模型粗化過(guò)程中的合成地震響應(yīng)變化及其與觀測(cè)地震響應(yīng)的差異,進(jìn)而分析評(píng)價(jià)、約束更新轉(zhuǎn)化過(guò)程,形成一套地質(zhì)模型轉(zhuǎn)化到油藏模型的地震油藏閉合循環(huán)新流程,從而使轉(zhuǎn)化后油藏模型依然保持原始地震的整體響應(yīng),為后期油藏?cái)?shù)值模擬打下了堅(jiān)實(shí)的基礎(chǔ)。
[Abstract]:At present, the degree of exploration and development of oil and gas fields is getting higher and higher. How to make comprehensive use of multi-disciplinary and multi-scale data such as geology, seismology, logging and so on to establish a higher resolution 3D reservoir model,It is of great significance to realize the fine description of reservoir distribution law and its heterogeneity, and to guide the exploration and development of new oil and gas fields and the stable production and production increase of remaining oil in the old oil area.Seismic driving modeling method is a newly proposed joint modeling method for well and earthquake. In the process of modeling, well data are regarded as hard data and seismic data are also hard data, so seismic data is fully integrated and utilized.Avoiding the calculation of variation function which is highly dependent on well information in geostatistics, the weighted coefficient is obtained by using the spatial correlation of seismic data, thus greatly reducing the well pattern sparsity.Uncertainty of cross-well physical property estimation under the condition of large spacing and strong reservoir heterogeneity.Through the continuous research and development in recent years, seismic driving modeling has been able to integrate a prior geological understanding, sedimentary model, and establish a three-dimensional reservoir geological model with high accuracy, which is consistent with the vertical and well resolution and the change of seismic data horizontally.But at present, it can not be directly applied to reservoir numerical simulation, which needs to be further converted into reservoir model.Based on the geological model established by seismic driving modeling, this paper introduces the idea of closed cycle of seismic reservoir according to the routine flow of transforming geological model into reservoir model.Through the establishment of rock physical models, geophysical information is introduced into the conventional time-depth conversion and model coarsening process.Based on the actual geological model, the variation of synthetic seismic response in the process of time-depth conversion and model coarsening is analyzed, and the difference between synthetic seismic response and observed seismic response is analyzed.A new process of closed circulation of seismic reservoir is formed which is transformed from geological model to reservoir model, so that the whole response of the original earthquake can be maintained by the transformed reservoir model, which lays a solid foundation for the later reservoir numerical simulation.
【學(xué)位授予單位】：中國(guó)石油大學(xué)(華東)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P631.4;P618.13

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本文編號(hào)：1750513