PY10-8/5大位移井是中海油在中國南海的重點難點項目。該大位移井項目中表層防碰,表層大尺寸井眼造斜,高穩(wěn)斜角長位移井段作業(yè)提速和井下工具的磨損都嚴(yán)重制約了定向施工作業(yè)進(jìn)程。在深入分析該項目定向鉆井作業(yè)技術(shù)難點的基礎(chǔ)上,參考國內(nèi)外大位移井定向鉆井技術(shù),根據(jù)該區(qū)塊的鉆井經(jīng)驗進(jìn)行了定向作業(yè)難點攻關(guān)優(yōu)化。通過優(yōu)化井眼軌道,優(yōu)化鉆具組合,使用并優(yōu)選旋轉(zhuǎn)導(dǎo)向鉆井工具,模擬與實時跟蹤分析作業(yè)工程參數(shù),逐步形成了適合該大位移井項目的定向鉆井作業(yè)配套技術(shù)。這些鉆井工藝的應(yīng)用使PY10-8/5大位移井項目得以順利、高效、經(jīng)濟(jì)地完成,并對其他同類項目有一定的借鑒意義。

【文章頁數(shù)】：5 頁

【文章目錄】：
1 井身結(jié)構(gòu)設(shè)計概況Summary of casing program design
2 施工難點與挑戰(zhàn)分析Difficulties and challenges
    2.1 表層防碰Surface anti-collision
    2.2 表層井段造斜Whipstocking of surface hole section
    2.3 #406.4 mm井段軌跡控制Trajectory control of#406.4 mm hole section
    2.4 #311.2 mm井段定向鉆井風(fēng)險與作業(yè)提速提效Risk&ROP and efficiency increase of directional drilling in#311.2 mm hole section
    2.5 #215.9 mm井段ECD控制與軌跡控制ECD and trajectory control of#215.9 mm hole
3 作業(yè)配套技術(shù)Supporting technologies
    3.1 防碰風(fēng)險控制Anti-collision risk control
        3.1.1 軌跡優(yōu)化
        3.1.2 優(yōu)化測斜程序
    3.2 大尺寸井眼定向軌跡控制Directional trajectory control of large borehole
        3.2.1 優(yōu)化鉆具組合
        3.2.2 調(diào)整鉆井參數(shù)
    3.3 專業(yè)軟件模擬作業(yè)工況Simulation of operating conditions with professional software
    3.4 優(yōu)選旋轉(zhuǎn)導(dǎo)向系統(tǒng)Optimization of rotary steering system
    3.5 MWD不停泵快速測斜MWD rapid deviation angle measurement without stopping pump
4 現(xiàn)場應(yīng)用Field application
    4.1 井眼軌跡質(zhì)量Borehole trajectory quality
    4.2 實時鉆井工況監(jiān)測與預(yù)判Real-time monitoring and prejudgment on drilling conditions
    4.3 鉆井作業(yè)時效Time efficiency of drilling operation
5 結(jié)論及認(rèn)識Conclusions and understandings



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