【摘要】：小井眼鉆井技術(shù)在石油工業(yè)中應(yīng)用開始于50年代,80至90年代小井眼鉆井技術(shù)獲得了突破性進(jìn)展,成為繼水平井之后油氣勘探開發(fā)中又一門新興熱門技術(shù)。近年來,國內(nèi)外對小井眼鉆井技術(shù)進(jìn)行了大量的研究,也取得了諸多成果,展現(xiàn)了良好的應(yīng)用與發(fā)展前景。然而,隨著油氣資源的不斷開發(fā),油氣資源品質(zhì)逐漸變差,一些新的難點問題也逐漸顯現(xiàn)出來:主要是有效提高水平井鉆井機(jī)械速度和降低成兩個方面。近幾年來,雖然吉林探區(qū)油氣藏儲量其豐富,但該油氣藏屬低孔、低滲、致密砂巖氣藏,地層可鉆性差、研磨性強(qiáng),為了經(jīng)濟(jì)高效地勘探開發(fā)吉林探區(qū)油氣藏,對小井眼水平井鉆井技術(shù)的高效應(yīng)用帶來前所未有的挑戰(zhàn)。本文對小井眼水平井鉆井工藝進(jìn)行了系統(tǒng)的研究,通過研究提高鉆井速度、縮短鉆井周期,來實現(xiàn)用小井眼水平井技術(shù)經(jīng)濟(jì)高效地開發(fā)松遼盆地南部油氣藏的目的。在理論分析的基礎(chǔ)上,研究了提高小井眼水平井鉆井速度的關(guān)鍵問題:分別對鉆頭、水力參數(shù)、井身結(jié)構(gòu)、鉆井液進(jìn)行了優(yōu)化。給出了適合吉林地質(zhì)特征小井眼水平井井身結(jié)構(gòu)和井眼軌跡控制,形成了一套完善的小井眼鉆井技術(shù)和方法,在此基礎(chǔ)上開發(fā)了配套的高效鉆井工具,結(jié)合乾安地區(qū)工廠化現(xiàn)場施工的應(yīng)用,并取得了良好的效果,對小井眼水平井鉆井技術(shù)有一個更清晰的認(rèn)識。因此本文的研究成果在吉林探區(qū)勘探開發(fā)鉆井中具有廣闊的應(yīng)用前景,并且能夠提高吉林探區(qū)小井眼水平井的鉆井技術(shù)水平,對提高鉆井速度,降低鉆井成本都具有重要意義。
[Abstract]:The application of slim hole drilling technology in the petroleum industry began in the 1950s. From 1980 to 90's, the slim hole drilling technology made a breakthrough, and became a new hot technology in oil and gas exploration and development after horizontal wells. In recent years, a great deal of research has been done on slim hole drilling technology at home and abroad, and a lot of achievements have been made, showing a good prospect of application and development. However, with the continuous development of oil and gas resources, the quality of oil and gas resources has gradually become worse, and some new difficulties have gradually emerged: mainly to improve the drilling mechanical speed of horizontal wells effectively and reduce them into two aspects. In recent years, although the reserves of oil and gas reservoirs in Jilin exploration area are abundant, the reservoirs are low porosity, low permeability, tight sandstone gas reservoirs, poor drillability and strong grinding ability. In order to explore and develop oil and gas reservoirs in Jilin exploration area economically and efficiently, It brings unprecedented challenges to the efficient application of slim hole horizontal well drilling technology. In this paper, the drilling technology of slim hole horizontal well is studied systematically. Through the research of improving drilling speed and shortening drilling period, the purpose of exploiting oil and gas reservoir in the south of Songliao Basin economically and efficiently by using slim hole horizontal well technology is realized. On the basis of theoretical analysis, the key problems to improve the drilling speed of small hole horizontal wells are studied: the drilling bit, hydraulic parameters, wellbore structure and drilling fluid are optimized respectively. According to the geological characteristics of Jilin Province, the well structure and trajectory control of horizontal well with small borehole are given, and a set of perfect drilling techniques and methods are formed. On the basis of this, a complete set of efficient drilling tools are developed. Combined with the application of industrial field construction in Gan'an area, good results have been obtained, and a clearer understanding of horizontal well drilling technology in slim hole has been obtained. Therefore, the research results of this paper have a broad application prospect in the exploration and development drilling in Jilin exploration area, and can improve the drilling technology level of small hole horizontal well in Jilin exploration area, which is of great significance to improve drilling speed and reduce drilling cost.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TE243

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