本文選題：礁灰?guī)r油藏 + 全直徑巖心　； 參考：《西南石油大學(xué)》2017年碩士論文

【摘要】：流花11-1油藏是流花11-1油田主要投入開發(fā)的底水控制的塊狀油藏,儲(chǔ)層開發(fā)主要目標(biāo)層系為上第三系中新統(tǒng)珠江組生物礁灰?guī)r,以次生孔隙為主,微裂縫較發(fā)育,屬于中-高孔滲儲(chǔ)層孔隙類型。儲(chǔ)層發(fā)育的裂縫在油藏開發(fā)過程中起著關(guān)鍵作用,能提高油井生產(chǎn)能力、改善開發(fā)效果,但卻增強(qiáng)了油藏非均質(zhì)性,從而引起底水竄流造成生產(chǎn)井水淹。由于礁灰?guī)r儲(chǔ)層地質(zhì)條件復(fù)雜,油藏開發(fā)面臨底水快速錐進(jìn)、采出程度低等問題。為了改善油藏開發(fā)效果,論文以流花11-1礁灰?guī)r礁灰?guī)r油藏為研究對(duì)象,使用能更好地還原儲(chǔ)層實(shí)際情況的全直徑巖心,篩選出裂縫--孔隙發(fā)育的,進(jìn)行巖樣物性分析、油水相滲曲線測(cè)試以及縱向水驅(qū)實(shí)驗(yàn)、注氣吞吐實(shí)驗(yàn)等研究,在充分認(rèn)識(shí)油藏水驅(qū)滲流特征及產(chǎn)水規(guī)律的基礎(chǔ)上,進(jìn)行油藏水驅(qū)油及注氣吞吐滲流機(jī)理研究,進(jìn)而提出能有效改善油田開發(fā)效果的開發(fā)對(duì)策。論文得到以下結(jié)論和認(rèn)識(shí):(1)對(duì)取得的全直徑巖心進(jìn)行物性分析,結(jié)果顯示礁灰?guī)r孔隙結(jié)構(gòu)復(fù)雜,微裂縫發(fā)育,所取巖樣的孔隙度和滲透率跨度大。(2)以不同滲透率及裂縫發(fā)育為標(biāo)準(zhǔn),對(duì)8組全直徑巖心進(jìn)行了相對(duì)滲透率曲線測(cè)定(其中3組為穩(wěn)態(tài)法測(cè)定,5組為非穩(wěn)態(tài)法),結(jié)合相應(yīng)理論知識(shí),對(duì)比相滲曲線特征,分析其滲流特征。(3)選取油藏不同層位的全直徑巖心,進(jìn)行縱向水驅(qū)油實(shí)驗(yàn),獲得了地層溫度壓力條件下的水驅(qū)滲流特征、產(chǎn)水規(guī)律以及燜井、提液的增油情況,結(jié)合巖心孔滲特性,分析水驅(qū)滲流機(jī)理和特征。(4)基于相似孔滲特性,利用組合全直徑巖心開展注氣吞吐實(shí)驗(yàn),模擬高含水階段頂部注氣壓錐,分析了氮?dú)馔掏驴厮鲇托ЧＭㄟ^以上研究,進(jìn)一步認(rèn)識(shí)了礁灰?guī)r油藏水驅(qū)滲流特征,為油田以后制定相應(yīng)的開發(fā)對(duì)策提供了依據(jù)。
[Abstract]:Liuhua 11-1 reservoir is a block reservoir controlled by bottom water in Liuhua 11-1 oilfield. The main target series of reservoir development is bioreef limestone of the Miocene Zhujiang formation in the Neogene, with mainly secondary pores and relatively developed microfractures. It belongs to the pore type of medium-high porosity and permeability reservoir. The fractures developed in the reservoir play a key role in the development of the reservoir, which can improve the production capacity of oil wells and improve the development effect, but it enhances the heterogeneity of the reservoir, thus causing the bottom water channeling and flooding of the production wells. Because of the complex geological conditions of reef limestone reservoir, reservoir development is faced with problems such as rapid coning of bottom water and low recovery degree. In order to improve the reservoir development effect, the paper takes Liuhua 11-1 reef limestone reservoir as the research object, uses the full-diameter core which can better reduce the actual situation of the reservoir, and screens out the fracture-pore development to analyze the physical properties of rock sample. The oil / water phase permeability curve test, longitudinal water drive experiment, gas injection stimulation experiment and so on are studied. On the basis of fully understanding the percolation characteristics of reservoir water drive and the rule of water production, the mechanism of reservoir water flooding and gas injection is studied. Furthermore, the development countermeasures which can effectively improve the oil field development effect are put forward. The results show that the pore structure of reef limestone is complex and micro-fracture is developed. The porosity and permeability span of the rock samples taken are large, and the different permeability and fracture development are taken as the standard. The relative permeability curves of eight groups of full-diameter cores were measured (among them, 3 groups were determined by steady-state method and 5 groups by unsteady state method). The characteristics of phase permeability curves were compared with corresponding theoretical knowledge. By analyzing the percolation characteristics, the whole diameter core of different layers of the reservoir is selected, and the longitudinal water flooding experiments are carried out. The characteristics of water flooding seepage, the water production law and the oil increment of braised well and liquid are obtained under the condition of formation temperature and pressure. According to the characteristics of pore and permeability in core, the mechanism and characteristics of water drive seepage are analyzed. Based on the similar pore and permeability characteristics, gas injection and puff experiments are carried out by combined full diameter core, the top pressure cone is simulated in high water cut stage, and the effect of nitrogen huff and puff control water increasing oil is analyzed. Through the above research, the characteristics of water drive seepage in reef limestone reservoir are further understood, which provides the basis for formulating corresponding development countermeasures in the future.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TE312

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