發(fā)布時間：2018-03-20 21:46

  本文選題：封堵材料　切入點(diǎn)：潤滑劑　出處：《科學(xué)技術(shù)與工程》2017年24期 　論文類型：期刊論文

【摘要】：為解決特低滲油藏細(xì)小空隙的封堵難題,減輕惰性封堵材料對鉆井液潤滑性造成的傷害,選用鉆井液用納米乳液作為外相,復(fù)合石墨微粉作為內(nèi)相,在基材潤濕劑、增溶劑的協(xié)同作用下,通過球磨分散工藝制備了一種石墨基復(fù)合材料SMD-1。研究表明,SMD-1的主要顆粒尺寸在3~15μm,加量3%時,鉆井液API濾失量從38.5 m L減少到9.4 m L,高溫高壓濾失量從97.2 m L減少到30.0 m L,80目以細(xì)砂床侵入深度從20.0 cm減少到5.1 cm,同時鉆井液潤滑系數(shù)降低82.8%,高溫高壓粘附系數(shù)降低85.7%,封堵、潤滑性能良好。在勝利油田濱425區(qū)塊X138井進(jìn)行了現(xiàn)場應(yīng)用,應(yīng)用井段井壁穩(wěn)定,鉆井液濾失量降低78.6%,潤滑系數(shù)降低80.0%,封堵性和潤滑性能突出,有效解決了井壁失穩(wěn)及裂縫漏失問題。
[Abstract]:In order to solve the problem of small gap plugging reservoir of low permeability, reduce inert plugging material caused by drilling fluid lubrication damage, selection of drilling fluid with nano graphite powder composite emulsion as the foreign minister, as in phase, in the substrate wetting agent, synergistic solubilizer, dispersion preparation process of a graphite based composite SMD-1. show that the ball mill, the main grain size in the 3~15 SMD-1 m, dosage of 3% API, drilling fluid filter loss is reduced from 38.5 m to 9.4 L m L, high temperature and high pressure filtration is reduced from 97.2 m to 30 L m L, with 80 mesh fine sand bed invasion depth from 20 cm reduced to 5.1 cm, while the drilling fluid lubrication coefficient reduced by 82.8%, high adhesion coefficient reduced by 85.7%, sealing, good lubricating performance. The field application in Shengli Oilfield offshore block 425 X138 wells, wells with wellbore stability, drilling fluid filtration decreased 78.6%, lubrication coefficient reduced by 80. 0%, the plugging and lubrication performance is outstanding, effectively solving the problem of wall instability and crack leakage.

【作者單位】： 德州大陸架石油工程技術(shù)有限公司;
【分類號】：TB332;TE254.4
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本文編號：1640920