本文選題：伊拉克　切入點：Asmari組　出處：《西南石油大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：伊拉克X油田是中海油對外合作開發(fā)的一個碳酸鹽巖油田,在開發(fā)過程中表現(xiàn)出諸多與國內(nèi)碳酸鹽巖油藏的差異性,研究區(qū)的儲層孔縫如何分布、有何特征尚不清楚,因此深入研究其儲層孔縫特征具有重要意義。本文以x油藏Asmari組為研究對象,運用沉積巖石學(xué)、儲層地質(zhì)學(xué)、測井地質(zhì)學(xué)和地球物理綜合解釋等理論,綜合了大量巖心、分析化驗、測井和地震等資料,采用宏觀與微觀分析相結(jié)合,系統(tǒng)分析了研究區(qū)儲層孔縫特征,并對儲層孔縫在三維空間的分布做出了預(yù)測,取得成果和認(rèn)識如下： (1)根據(jù)巖心觀察、薄片鑒定,伊拉克X油藏Asmari組儲層的空隙主要為次生的溶孔,同時還有裂縫和溶洞。根據(jù)統(tǒng)計結(jié)果發(fā)現(xiàn),儲層孔隙類型以基質(zhì)孔隙型為主,局部含裂縫和溶洞。 (2)通過常規(guī)測井資料和曲線元識別,識別出的Asmari組空隙類型有裂縫和溶洞。根據(jù)識別出的類型特征,我們分別定義為基質(zhì)孔隙相、裂縫-孔隙相和溶洞孔隙相。 (3)通過對Asmari組的斷裂發(fā)生指數(shù)、膨脹系數(shù)、高斯曲率、應(yīng)力場軌跡和地震數(shù)據(jù)的相干體屬性分析表明,研究區(qū)的潛在斷裂多發(fā)育在X-3,X-25,X-28井區(qū)附近。 (4)基于多相及隨機建模方法,依靠逐級標(biāo)定、儲滲介質(zhì)相及其隨機建模,通過信息的跨尺度傳遞與多空間融合,實現(xiàn)對孔、洞、縫的三維表征。由此對研究區(qū)Asmari組儲層的孔縫相進行空間三維預(yù)測。 (5)通過產(chǎn)能分析發(fā)現(xiàn)產(chǎn)能高的小層縫洞發(fā)育較多,同時物性統(tǒng)計也發(fā)現(xiàn)該小層的滲透率也要明顯大于其他小層。
[Abstract]:Iraq X oil field is a carbonate oil field developed by CNOOC in cooperation with foreign countries. In the process of development, it is not clear that there are many differences between Iraq and domestic carbonate reservoirs, how the pore fractures are distributed in the study area, and what the characteristics are. Therefore, it is of great significance to study the pore and fracture characteristics of the reservoir. In this paper, a large number of cores have been synthesized using the theories of sedimentary petrology, reservoir geology, logging geology and geophysical interpretation, taking the Asmari formation of x reservoir as the research object, and applying the theories of sedimentary petrology, reservoir geology, logging geology and geophysical interpretation, etc. Based on the analysis of laboratory data, logging and seismic data, the characteristics of reservoir pore fractures in the study area are systematically analyzed by combining macro and micro analysis, and the distribution of reservoir pore fractures in 3D space is predicted. The results and understandings are as follows:. (1) according to core observation and thin section identification, the porosity of Asmari formation reservoir in Iraq X reservoir is mainly secondary dissolved pores, as well as fractures and caverns. According to the statistical results, the pore type of reservoir is mainly matrix pore type. Local cracks and caverns. (2) through conventional logging data and curve element recognition, the Asmari group voids are identified as fractures and cavities. According to the identified types, we define them as matrix pore facies, fracture-pore facies and cavern pore facies respectively. Through the analysis of the fracture occurrence index, expansion coefficient, Gao Si curvature, the track of stress field and the coherence attribute of seismic data in Asmari formation, it is shown that the potential faults in the study area are mostly developed near the X-3X-25X-28 well area. Based on the multi-phase and stochastic modeling method, depending on the step by step calibration, the storage medium phase and its random modeling, through the cross-scale transmission of information and the fusion of multi-space, the hole and hole can be realized. Three-dimensional characterization of fractures. Therefore, three dimensional prediction of pore facies in Asmari formation reservoir is carried out. 5) through productivity analysis, it is found that there are more fractures and cavities in the layer with high productivity, and the permeability of the layer is obviously larger than that of the other layers.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P618.13

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