本文關(guān)鍵詞： 高溫射流 非預(yù)混燃燒 燃燒裝置 反應(yīng)規(guī)律 數(shù)值模擬　出處：《石油學(xué)報(bào)》2017年05期 　論文類(lèi)型：期刊論文

【摘要】：結(jié)合高壓水射流和巖石熱裂解鉆井方法,提出了適用于深部硬地層的高溫射流鉆井新方法,即利用高速射流對(duì)巖石表面形成沖擊力,同時(shí)高溫流體迅速將熱量傳遞給巖石以達(dá)到快速破巖的目的。因此高溫射流發(fā)生裝置對(duì)最終作用于巖石的射流性能十分重要,設(shè)計(jì)了兩種高溫射流燃燒反應(yīng)發(fā)生裝置結(jié)構(gòu)(混合裝置和對(duì)沖裝置),利用計(jì)算流體力學(xué)模擬了常壓下不同反應(yīng)參數(shù)對(duì)生成的高溫射流的影響,并對(duì)兩種裝置進(jìn)行對(duì)比分析和反應(yīng)規(guī)律研究。結(jié)果表明:高溫的平均射流速度隨著甲醇質(zhì)量流量的增加而增大;氣體存在滑脫效應(yīng),在滿(mǎn)足化學(xué)反應(yīng)方程的理論值的基礎(chǔ)上,甲醇的實(shí)際質(zhì)量流量應(yīng)大于理論質(zhì)量流量,而氧氣的實(shí)際質(zhì)量流量小于理論質(zhì)量流量,使兩者混合和燃燒更加充分,釋放更多能量;在本文模型條件下,將空氣質(zhì)量流量控制在0.03~0.04kg/s較為合適,既可以保證反應(yīng)腔內(nèi)充分燃燒,又可以獲得較高的射流速度;冷水質(zhì)量流量與噴嘴速度呈線(xiàn)性正相關(guān);在現(xiàn)場(chǎng)實(shí)際應(yīng)用中,應(yīng)注意控制冷水流量,以免造成射流溫度過(guò)低。不同空氣質(zhì)量流量條件下,混合裝置的射流速度和溫度較優(yōu)。兩種裝置的射流速度和溫度在不同氧氣濃度條件下變化規(guī)律一致,均先增大、后減小,但是在射流速度方面,對(duì)沖裝置較優(yōu)。在現(xiàn)場(chǎng)實(shí)際應(yīng)用時(shí)可根據(jù)需要達(dá)到的射流速度和溫度選擇不同結(jié)構(gòu)的燃燒裝置,使高溫射流的性能達(dá)到最優(yōu)。
[Abstract]:Combined with high pressure water jet and rock pyrolysis drilling method, a new high temperature jet drilling method suitable for deep hard formation is put forward, that is, using high speed jet to form impact force on rock surface. At the same time, the high temperature fluid can transfer the heat to the rock quickly to achieve the purpose of breaking the rock quickly. Therefore, the high temperature jet generator is very important to the performance of the jet acting on the rock. Two kinds of high temperature jet combustion reaction generator structures (mixing device and counter device) are designed. The influence of different reaction parameters on the generated high temperature jet under atmospheric pressure is simulated by computational fluid dynamics. The results show that the average jet velocity at high temperature increases with the increase of methanol mass flow rate. On the basis of satisfying the theoretical value of the chemical reaction equation, the actual mass flow rate of methanol should be larger than the theoretical mass flow rate, while the actual mass flow rate of oxygen is smaller than the theoretical mass flow rate. Make the two mixing and burning more fully, release more energy; Under the condition of this model, it is more suitable to control the air mass flow rate at 0.03 ~ 0.04kg / s, which can not only ensure the full combustion in the reaction chamber, but also obtain higher jet velocity. There is a linear positive correlation between the mass flow rate of cold water and the velocity of nozzle. In practical application, it is necessary to control the flow of cold water in order to avoid the jet temperature being too low and under different air mass flow conditions. The jet velocity and temperature of the two devices are the same under different oxygen concentration conditions, both increase first, then decrease, but in the jet velocity. The combustion device with different structures can be selected according to the velocity and temperature of the jet in practical application in the field, so that the performance of the high temperature jet can be optimized.
【作者單位】： 中國(guó)石油大學(xué)油氣資源與探測(cè)國(guó)家重點(diǎn)實(shí)驗(yàn)室;中國(guó)石油集團(tuán)鉆井工程技術(shù)研究院;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(No.51504272,U1562212) 教育部?jī)?yōu)秀博士論文作者專(zhuān)項(xiàng)基金項(xiàng)目(201352) 中國(guó)石油天然氣集團(tuán)公司鉆井新技術(shù)新方法(2016A-3902);中國(guó)石油天然氣集團(tuán)公司創(chuàng)新基金項(xiàng)目(2015D-5006-0308) 中英研究與創(chuàng)新橋計(jì)劃合作項(xiàng)目“地?zé)嶂悄芫@完井關(guān)鍵技術(shù)與優(yōu)化設(shè)計(jì)平臺(tái)”(2016YFE0124600)資助
【分類(lèi)號(hào)】：TE21
【正文快照】： 引用:宋先知,呂澤昊,崔柳,李根生,劉昱,胡曉東,紀(jì)國(guó)棟.高溫射流反應(yīng)腔結(jié)構(gòu)設(shè)計(jì)與反應(yīng)規(guī)律[J].石油學(xué)報(bào),2017,38(5):587-596.Cite:SONG Xianzhi,L媲Zehao,CUI Liu,LI Gensheng,LIU Yu,HU Xiaodong,JI Guodong.Structure design and reaction law ofhigh-temperature jet reacti

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