本文選題：小眼井　切入點(diǎn)：水平井　出處：《石油鉆探技術(shù)》2016年06期 　論文類型：期刊論文

【摘要】：順北區(qū)塊超深小井眼水平井鉆井過程中,鉆遇易漏易塌的層位多、摩阻扭矩大、鐖120.6mm井眼軌跡控制困難,導(dǎo)致機(jī)械鉆速低、鉆井周期長(zhǎng),為此進(jìn)行了優(yōu)快鉆井技術(shù)研究。通過分析鉆井、測(cè)井、測(cè)試等資料,建立了地層三壓力剖面,并據(jù)此確定必封點(diǎn),將六級(jí)井身結(jié)構(gòu)優(yōu)化為四級(jí)井身結(jié)構(gòu);針對(duì)易漏易塌地層的特點(diǎn),通過室內(nèi)試驗(yàn),制定了防漏防塌技術(shù)措施;通過分析大角度螺桿的造斜率和采用雙增式軌道,降低了小井眼段軌跡控制難度;通過降低定向井段長(zhǎng)度、鉆具和井壁的接觸面積和采用混油鉆井液,降低了摩阻扭矩;試驗(yàn)應(yīng)用"扭力沖擊器+PDC鉆頭"鉆井工藝,提高了機(jī)械鉆速。通過研究和試驗(yàn)形成了順北區(qū)塊超深小井眼水平井優(yōu)快鉆井技術(shù),并在5口井進(jìn)行了現(xiàn)場(chǎng)應(yīng)用,與采用六級(jí)井身結(jié)構(gòu)的X1井相比,機(jī)械鉆速提高了29.36%,鉆井周期縮短了93d。研究與應(yīng)用表明,超深小井眼水平井優(yōu)快鉆井技術(shù)能滿足順北區(qū)塊超深小井眼水平井安全高效的鉆井需求,為該區(qū)塊碳酸鹽巖海相油氣藏的高效開發(fā)提供了工程技術(shù)保障。
[Abstract]:In the drilling process of ultra-deep slim hole horizontal well in Shunbei block, there are many layers easily leaking and collapsing, the torque of friction is large, and the trajectory control of 120.6mm well is difficult, which results in low drilling speed and long drilling period. Through analyzing the data of drilling, logging and testing, the formation three pressure profile is established, and the necessary sealing point is determined accordingly, and the six-stage well structure is optimized to the fourth level well structure. According to the characteristics of easily leaking and sloughing formation, the technical measures of preventing leakage and sloughing are established through laboratory tests, and the difficulty of trajectory control of small hole section is reduced by analyzing the slope of large angle screw and adopting double increasing track. The friction torque is reduced by reducing the length of directional section, the contact area of drilling tools and wellbore and the use of mixed oil drilling fluid. Through research and test, the excellent fast drilling technology of super deep slim hole horizontal well in Shunbei block was formed, and it was applied in 5 wells in the field, compared with X1 well with six grade shaft structure. The mechanical drilling speed has been increased by 29.36 and the drilling period has been shortened by 93 days. The research and application show that the excellent fast drilling technology can meet the requirements of safe and efficient drilling for the ultra-deep small hole horizontal wells in Shunbei block. It provides engineering technical support for the high efficiency development of carbonate marine reservoirs in this block.
【作者單位】： 中國(guó)石化西北油田分公司石油工程技術(shù)研究院;中國(guó)石化石油工程技術(shù)研究院;
【基金】：國(guó)家科技重大專項(xiàng)“大型油氣田及煤層氣開發(fā)”之課題“碳酸鹽巖縫洞型油藏鉆井技術(shù)完善與推廣”(編號(hào):2011ZX05049-02-02)資助
【分類號(hào)】：TE243

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本文編號(hào)：1647813