【摘要】：在川西地區(qū)鉆探開(kāi)發(fā)時(shí),馬井、孝泉構(gòu)造由于其中淺層富含極易水化膨脹和分散的棕紅(褐)泥巖,自然造漿情況嚴(yán)重,易進(jìn)一步引起井壁坍塌、縮徑等穩(wěn)定性問(wèn)題,增加起下鉆摩阻和扭矩,甚至引起遇阻卡鉆等復(fù)雜情況或事故。通過(guò)統(tǒng)計(jì)該地區(qū)前期施工情況表明：現(xiàn)有水基鉆井液體系難以完全滿(mǎn)足川西地層水平井施工需要,表現(xiàn)出較多復(fù)雜情況,特別是地層井壁失穩(wěn),斜井段、水平段摩阻大等復(fù)雜問(wèn)題。為此,本文針對(duì)川西地層特點(diǎn)和鉆井液技術(shù)難度,在充分調(diào)研國(guó)內(nèi)外聚胺仿油基鉆井液體系現(xiàn)狀的基礎(chǔ)上,對(duì)聚胺仿油基鉆井液體系處理劑優(yōu)選、體系性能評(píng)價(jià)優(yōu)化和礦場(chǎng)應(yīng)用進(jìn)行了全面深入地研究：(1)通過(guò)川西地區(qū)地質(zhì)情況研究,分析該地區(qū)地層特點(diǎn)、鉆井液體系難點(diǎn)及施工難度,綜合該地區(qū)前期鉆井液復(fù)雜情況表明目前川西地區(qū)所使用的水基鉆井液體系難以滿(mǎn)足鉆探開(kāi)發(fā)要求。(2)針對(duì)川西地區(qū)出現(xiàn)的復(fù)雜情況,重點(diǎn)開(kāi)展對(duì)井壁更穩(wěn)定的聚胺仿油基鉆井液處理劑優(yōu)選,研制出具有一套聚胺仿油基鉆井液體系：3～4%NV-1+0.03%MMCA+ 1%LV-CMC+3-5%MEG+0.4%JA-11+1-1.5%KHPAN+0.5～1%NH4HPAN+1～2%FT342+0. 1%NaOH+0.2～0.5%QS-2+BaSO4。(3)實(shí)驗(yàn)評(píng)價(jià)表明該體系具有強(qiáng)抑制性、強(qiáng)封堵性和優(yōu)秀的潤(rùn)滑性。并對(duì)該聚胺仿油基鉆井液體系優(yōu)化和性能評(píng)價(jià),提出體系轉(zhuǎn)型方案和維護(hù)要點(diǎn),形成針對(duì)川西地層獨(dú)特的聚胺仿油基鉆井液體系施工工藝。(4)礦場(chǎng)應(yīng)用實(shí)踐表明,造斜段、水平段起下鉆順利,井壁穩(wěn)定,無(wú)阻卡等復(fù)雜情況發(fā)生,滿(mǎn)足川西地區(qū)水平井安全、高效的施工需求。
[Abstract]:During drilling and development in western Sichuan, the Majing and Xiaoquan structures are rich in brown red (brown) mudstone, which are easy to be hydrated and dilated, and are easy to cause stability problems such as collapse of shaft wall and shrinkage of diameter. Increase the friction and torque, and even lead to difficulties such as jam or accident. Through the statistics of the previous construction in this area, it is shown that the existing water-based drilling fluid system is difficult to fully meet the requirements of horizontal well construction in western Sichuan, and shows more complex conditions, especially the instability of formation wall and the inclined well section. Complex problems such as large frictional resistance in horizontal section. Therefore, in view of the formation characteristics and technical difficulty of drilling fluid in western Sichuan, on the basis of investigating the present situation of polyamine mimic oil base drilling fluid system at home and abroad, the treatment agent of polyamine imitating oil base drilling fluid system is selected. The evaluation and optimization of system performance and the application of mine field are studied comprehensively and deeply: (1) through the study of geological conditions in western Sichuan, the formation characteristics, the difficulties of drilling fluid system and the difficulty of construction in this area are analyzed. Synthesizing the complex situation of drilling fluid in the early stage in this area, it is shown that the water-based drilling fluid system used in western Sichuan area is difficult to meet the requirements of drilling and development. (2) aiming at the complex situation in western Sichuan area, Focusing on the selection of more stable polyamine-mimic oil-based drilling fluid treatment agents, A set of polyamine mimic oil base drilling fluid system, 3~4%NV-1 0.03%MMCA 1%LV-CMC 3-5%MEG 0.4%JA-11 1-1.5%KHPAN 0.5~1%NH4HPAN 1~2%FT342 0. 1%NaOH 0.2~0.5%QS-2 BaSO4. (3) experiments show that the system has strong inhibition, strong plugging and excellent lubricity. The optimization and performance evaluation of the polyamine mimic oil based drilling fluid system is also given, and the system transformation scheme and maintenance points are put forward to form the unique construction technology of polyamine imitating oil base drilling fluid system for the formation of western Sichuan. (4) the field application practice shows that the slanting section is made. The horizontal section is smooth, the shaft lining is stable, and the complex conditions such as unobstructed card occur, which meet the requirements of safe and efficient construction of horizontal wells in West Sichuan.
【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】：2015
【分類(lèi)號(hào)】：TE254

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本文編號(hào)：2335368