本文選題：泡沫 + 理化性質��； 參考：《東北石油大學》2017年碩士論文

【摘要】：泡沫鉆井技術是欠平衡鉆井技術的一個重要分支,近幾十年來欠平衡壓力鉆井技術得到了較快的發(fā)展。欠平衡壓力鉆井技術是一項在鉆井過程中,讓鉆井液的液柱壓力低于底層孔隙壓力所采用的技術。這項技術多適用于強水敏性地層,地層壓力較低以及儲集層能量衰竭速度快的油氣藏及天然氣、煤層氣等氣藏。與傳統(tǒng)鉆井液相比,泡沫鉆井液具有密度較低并易調、濾失量小、攜帶巖屑能力強、腐蝕性低、抗鹽性及穩(wěn)定性好等特點。泡沫鉆井技術,顧名思義是以泡沫作為循環(huán)介質,相對于傳統(tǒng)的鉆井循環(huán)介質,泡沫在流速分布更加均勻,攜巖能力更強,其在環(huán)空中的流動特性也更為明顯。對泡沫鉆井技術的研究,目前尚未進行系統(tǒng)的實驗研究,更沒有成熟的理論體系。本文基于理論和實踐,對于泡沫鉆井液的性能進行深入研究,其中包括了其流動性能的基本規(guī)律,以及攜巖能力等,以便泡沫鉆井技術能更好的應用于實踐。本次研究中,首先對泡沫的攜巖能力進行了深入系統(tǒng)的分析,這一部分主要是建立在理論基礎之上,進行簡單的實驗驗證,為此特意設置了不同變量,然后利用環(huán)空攜巖實驗裝置,實驗了泡沫不同變量下對泡沫環(huán)空攜巖效率高低的影響,并通過記錄實驗指標,測算得到了相應的實驗數(shù)據,與理論分析的數(shù)據結果相對比,發(fā)現(xiàn)前后兩者的結果基本吻合。通過對于理論知識的實驗論證,使得泡沫鉆井液的攜巖性能有了更加清晰的認知,對下一步泡沫鉆井技術的應用及推廣起到了良好推動作用。
[Abstract]:Foam drilling technology is an important branch of underbalanced drilling technology, which has been developed rapidly in recent decades. Underbalanced pressure drilling is a technique used to make the fluid column pressure of drilling fluid lower than the bottom pore pressure during drilling. This technique is mostly suitable for oil and gas reservoirs with high water sensitivity, low formation pressure and fast energy depletion rate in reservoirs, such as natural gas and coalbed methane. Compared with traditional drilling fluid, foam drilling fluid has the characteristics of low density and easy to adjust, low filtration loss, strong ability to carry cuttings, low corrosion, good salt resistance and stability. Foam drilling technology, as the name implies, takes foam as circulation medium. Compared with traditional drilling circulation medium, foam has more uniform velocity distribution, stronger rock carrying capacity and more obvious flow characteristics in the annulus. The research on foam drilling technology has not been carried out systematic experimental research, let alone a mature theoretical system. Based on the theory and practice, the performance of foam drilling fluid is studied in this paper, including the basic law of its flow performance and rock carrying capacity, so that foam drilling technology can be better applied in practice. In this study, first of all, a deep and systematic analysis of the rock carrying capacity of foam is carried out. This part is mainly based on theory and simple experimental verification. For this reason, different variables are specially set up. Then, the influence of different foam variables on the carrying efficiency of foam annulus is tested by using an experimental device for carrying rock in annulus, and the corresponding experimental data are calculated and obtained by recording the experimental indexes, which are compared with the results of theoretical analysis. It was found that the results before and after the two were basically consistent. Through the experiment and demonstration of theoretical knowledge, the rock carrying performance of foam drilling fluid is more clearly recognized, and it plays a good role in promoting the application and popularization of foam drilling technology in the next step.
【學位授予單位】：東北石油大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TE254
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本文編號：1875037