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

【摘要】：泡沫鉆井技術(shù)是欠平衡鉆井技術(shù)的一個(gè)重要分支,近幾十年來欠平衡壓力鉆井技術(shù)得到了較快的發(fā)展。欠平衡壓力鉆井技術(shù)是一項(xiàng)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(shù)。這項(xiàng)技術(shù)多適用于強(qiáng)水敏性地層,地層壓力較低以及儲(chǔ)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(diào)、濾失量小、攜帶巖屑能力強(qiáng)、腐蝕性低、抗鹽性及穩(wěn)定性好等特點(diǎn)。泡沫鉆井技術(shù),顧名思義是以泡沫作為循環(huán)介質(zhì),相對(duì)于傳統(tǒng)的鉆井循環(huán)介質(zhì),泡沫在流速分布更加均勻,攜巖能力更強(qiáng),其在環(huán)空中的流動(dòng)特性也更為明顯。對(duì)泡沫鉆井技術(shù)的研究,目前尚未進(jìn)行系統(tǒng)的實(shí)驗(yàn)研究,更沒有成熟的理論體系。本文基于理論和實(shí)踐,對(duì)于泡沫鉆井液的性能進(jìn)行深入研究,其中包括了其流動(dòng)性能的基本規(guī)律,以及攜巖能力等,以便泡沫鉆井技術(shù)能更好的應(yīng)用于實(shí)踐。本次研究中,首先對(duì)泡沫的攜巖能力進(jìn)行了深入系統(tǒng)的分析,這一部分主要是建立在理論基礎(chǔ)之上,進(jìn)行簡單的實(shí)驗(yàn)驗(yàn)證,為此特意設(shè)置了不同變量,然后利用環(huán)空攜巖實(shí)驗(yàn)裝置,實(shí)驗(yàn)了泡沫不同變量下對(duì)泡沫環(huán)空攜巖效率高低的影響,并通過記錄實(shí)驗(yàn)指標(biāo),測算得到了相應(yīng)的實(shí)驗(yàn)數(shù)據(jù),與理論分析的數(shù)據(jù)結(jié)果相對(duì)比,發(fā)現(xiàn)前后兩者的結(jié)果基本吻合。通過對(duì)于理論知識(shí)的實(shí)驗(yàn)論證,使得泡沫鉆井液的攜巖性能有了更加清晰的認(rèn)知,對(duì)下一步泡沫鉆井技術(shù)的應(yīng)用及推廣起到了良好推動(dòng)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(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)】：TE254
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本文編號(hào)：1875037