本文選題：頁巖氣　切入點：甜點預(yù)測　出處：《天然氣工業(yè)》2017年05期

【摘要】：四川盆地長寧區(qū)塊是中國最早進(jìn)行頁巖氣勘探開發(fā)的地區(qū),但以往地震工作量投入相對較少,尚未精細(xì)刻畫出頁巖氣商業(yè)開采的"甜點區(qū)"。為此,基于測井及三維地震解釋成果等資料,通過地震巖石物理分析和建模,確定頁巖氣儲層甜點地球物理響應(yīng)特征,并以此為依據(jù),應(yīng)用全道集疊前反演技術(shù)預(yù)測了總有機(jī)碳含量(TOC)、優(yōu)質(zhì)儲層厚度、地層脆性及地層壓力等關(guān)鍵評價參數(shù)的平面分布情況;應(yīng)用模糊優(yōu)化綜合評價方法確定了甜點的空間展布。研究結(jié)果表明:(1)該區(qū)頁巖氣儲層甜點具有明顯的低密度、低縱波速度、低泊松比、低縱橫波速度比特征,且TOC越高,上述特征越明顯;(2)優(yōu)質(zhì)頁巖儲層(Ⅰ、Ⅱ類區(qū))在縱向上主要分布于下志留統(tǒng)龍馬溪組底界上部約30 m范圍內(nèi),平面上主要分布于三維地震區(qū)塊的中部,建議優(yōu)先開發(fā);(3)Ⅲ類儲層區(qū)各項關(guān)鍵評價指標(biāo)均較低,建議選擇性開發(fā)。
[Abstract]:The Changning block of Sichuan Basin is the first area in China to carry out shale gas exploration and development, but in the past, the amount of earthquake work was relatively small, and the "dessert area" for commercial shale gas exploitation has not yet been carefully delineated. For this reason, Based on the data of logging and 3D seismic interpretation, the geophysical response characteristics of shale gas reservoir are determined by seismic rock physical analysis and modeling. The plane distribution of the key evaluation parameters, such as total organic carbon content (TOC), high quality reservoir thickness, formation brittleness and formation pressure, is predicted by using the prestack inversion technique of whole trace gathering. The spatial distribution of desserts is determined by using fuzzy optimization comprehensive evaluation method. The results show that the desserts of shale gas reservoirs in this area have obvious characteristics of low density, low P wave velocity, low Poisson ratio, low P / S wave velocity ratio, and the TOC is higher. The more obvious the above characteristics are, the more obvious is the high quality shale reservoir (鈪，

本文編號：1673885