磨溪008-H21井斜井段钻井提速实践

发布时间：2018-12-16 03:46

【摘要】：四川磨溪气田龙王庙气藏,垂深超过4 600 m,该地区水平井定向段岩石可钻性差、栖霞组易漏、造斜率低、托压严重、储层垂深差异大,对水平井钻井技术提出了更高要求。磨溪008-H21井是磨溪构造东高点高部位的一口水平井,通过优化设计轨迹、基于滑动方式的井眼轨迹控制技术优化、钻头和螺杆优选、防托压技术、先进高温高压MWD仪器应用,解决了高温环境下井眼轨迹的测量及控制问题。根据地层岩性特点调整钻井液性能,满足了磨溪深井水平井高温稳定性、携砂和润滑性要求。通过磨溪008-H21井斜井段定向钻井施工,总结了一套适合磨溪地区龙王庙水平井斜井段钻井技术。
[Abstract]:The vertical depth of Longwangmiao gas reservoir in Moxi gas field, Sichuan Province, is more than 4 600 m.The rock drillability of directional section of horizontal well in this area is poor, Qixia formation is easy to leak, the slope rate is low, the supporting pressure is serious, and the reservoir vertical depth is different greatly, which puts forward higher requirements for horizontal well drilling technology. Moxi 008-H21 well is a horizontal well in the high point of the east high point of Moxi structure. Through the optimization of design trajectory, the optimization of hole trajectory control technology based on sliding mode, the optimum selection of drill bit and screw, the technology of preventing supporting pressure, and the application of advanced high temperature and high pressure MWD instruments, The problem of hole trajectory measurement and control in high temperature environment is solved. According to the lithologic characteristics of formation, the drilling fluid performance is adjusted to meet the requirements of high temperature stability, sand carrying and lubricity of the horizontal well in Moxi deep well. Through directional drilling in the inclined well section of Moxi 008-H21 well, a set of drilling techniques suitable for the inclined section of Longwangmiao horizontal well in Moxi area are summarized.
【作者单位】：中国石油川庆钻探工程公司川西钻探公司;中国石油西南油气田分公司安全环保与技术监督研究院;
【分类号】：TE24

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