本文選題：定量評價 + 模糊數(shù)學��； 參考：《石油與天然氣地質(zhì)》2017年01期

【摘要】：儲層認識不成熟以及評價信息不完備等問題,給蘇里格氣田蘇X井區(qū)盒8下亞段低滲透氣藏早期的儲層評價帶來很多不確定性,進而無法精細刻畫儲層特征。如何充分體現(xiàn)儲層評價過程的不確定性以及有效擴大評價結果的差異性,則成為改善儲層評價效果的關鍵。以隸屬度為紐帶,按照多信息疊合思想,將不確定方法中的模糊綜合評價和灰色關聯(lián)評價方法有機組合,對內(nèi)部算法進行差異化改進處理,建立了更加有效的模糊-灰色綜合評判方法。實例應用表明,新方法在兼顧研究區(qū)儲層評價模糊性和灰色性的同時,還提高了低滲透儲層的區(qū)分度,提升了儲層描述的精度。根據(jù)改進后的儲層分類結果,將盒8下亞段劃分出4類儲層,其中Ⅰ和Ⅱ類為有利儲層。平面上儲層展布與過去的近連片認識相比刻畫得更加精細,儲層類別間具有較好的區(qū)分,更貼近河流沉積的發(fā)育規(guī)律和地質(zhì)知識庫,與已有實踐成果和地質(zhì)認識也大致匹配。該方法能夠快速有效地指導氣田勘探開發(fā)部署實踐,為類似的低滲透儲層評價提供了新的思路。
[Abstract]:Some problems, such as immature reservoir knowledge and incomplete evaluation information, bring a lot of uncertainty to the early evaluation of low permeability gas reservoir in Su-8 sub-member of Su-X well area in Sulige gas field, which can not accurately depict the reservoir characteristics. How to fully reflect the uncertainty of reservoir evaluation process and effectively expand the difference of evaluation results is the key to improve reservoir evaluation effect. Based on the idea of multi-information superposition, the fuzzy comprehensive evaluation and grey relational evaluation are combined to improve the internal algorithm. A more effective fuzzy-grey comprehensive evaluation method is established. The application shows that the new method not only considers the fuzziness and grayness of reservoir evaluation in the study area, but also improves the differentiation of low permeability reservoir and the accuracy of reservoir description. According to the result of improved reservoir classification, the lower part of Bo8 is divided into 4 types of reservoirs, among which type 鈪，

本文編號：2050287