本文關(guān)鍵詞： 大民屯凹陷 沉積構(gòu)造 錄井技術(shù) 油藏解釋 二次評(píng)價(jià)　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】：由于遼河油田的油品性質(zhì)多樣,儲(chǔ)層物性不好,準(zhǔn)確識(shí)別含油氣性難度較大,且在油田勘探開發(fā)初期,鑒于錄井、測井等技術(shù)手段落后、儲(chǔ)層評(píng)價(jià)方法有限,均造成部分油層判別不準(zhǔn)確,直接影響到后期的勘探開發(fā)工作。本研究是在沉積學(xué)、儲(chǔ)層地質(zhì)學(xué)等理論指導(dǎo)下,結(jié)合錄井、測井、地震解釋等資料,分析了遼河坳陷大民屯凹陷S257塊沙四段的儲(chǔ)層特征,該區(qū)塊目的層主要發(fā)育近岸水下扇相沉積,巖石類型以混合砂巖、長石質(zhì)巖屑砂巖為主,結(jié)構(gòu)成熟度、成分成熟度均較低;儲(chǔ)層原生粒間孔隙不發(fā)育,物性較差,屬于低孔低滲儲(chǔ)層。此外,S257塊油藏沙四段原油性質(zhì)屬高凝油。在查明儲(chǔ)層地質(zhì)特征基礎(chǔ)上,運(yùn)用綜合參數(shù)法、含油飽和度法、最小二乘法、相關(guān)系數(shù)法等多種方法,建立了不同品質(zhì)原油的地化錄井資料解釋判別標(biāo)準(zhǔn)及圖版;確定了核磁共振T2弛豫譜資料的油層、水層、同層及干層的判別標(biāo)準(zhǔn),并可根據(jù)圖譜形狀進(jìn)一步落實(shí)儲(chǔ)層特點(diǎn)和含油性。針對(duì)研究區(qū)高凝油油藏特征,應(yīng)用地化錄井技術(shù),對(duì)老井巖心、巖屑、井壁取心等樣品,進(jìn)行了含油性二次評(píng)價(jià),建議重新試油304層/29口井;已試油54層/10口井,累計(jì)油層厚度261.6m,低產(chǎn)油層厚度72.8m。將錄井資料二次評(píng)價(jià)技術(shù)應(yīng)用于儲(chǔ)量計(jì)算中,可提高對(duì)油層的識(shí)別精度,使計(jì)算儲(chǔ)量增加。
[Abstract]:Because of the variety of oil products and poor physical properties of reservoir, it is difficult to accurately identify oil-bearing gas in Liaohe Oilfield. In the early stage of exploration and development of oil field, reservoir evaluation methods are limited in view of the backwardness of logging, logging and other technical means. This study is based on the theory of sedimentology, reservoir geology and so on, combined with the data of logging, logging, seismic interpretation, etc. The reservoir characteristics of the fourth member of S257 block in the Damingtun sag of Liaohe depression are analyzed. The target layer of the block mainly develops nearshore subaqueous fan facies sedimentary. The rock types are mixed sandstone, feldspathic lithoclastic sandstone, low structural maturity and low compositional maturity. Reservoir primary intergranular pore is not developed, physical property is poor, it belongs to low porosity and low permeability reservoir. In addition, the crude oil property of the fourth member of Shahejie formation in Block S257 belongs to high condensate oil. On the basis of identifying the geological characteristics of reservoir, the comprehensive parameter method and oil saturation method are used. Several methods, such as least square method and correlation coefficient method, have been established to distinguish the geochemical logging data of crude oil of different quality, and the discriminant standards of oil layer, water layer, same layer and dry layer of NMR T2 relaxation spectrum data have been determined. In accordance with the characteristics of high condensable oil reservoir in the study area, geochemical logging technology is used to evaluate the oil content of old well core, cuttings, coring of well wall, and so on, in view of the characteristics of high condensable oil reservoir in the study area, which can be further implemented according to the shape of the map, and the secondary evaluation of oil content is carried out on the basis of the geochemical logging technology. It is suggested that 304 layers / 29 wells should be tested again, 54 / 10 wells have been tested, the accumulative thickness of oil layer is 261.6 m, and the thickness of low production reservoir is 72.8 m. The application of the second evaluation technology of logging data to the calculation of reserves can improve the recognition accuracy of reservoir and increase the calculated reserves.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TE142;P618.13

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