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康菲石油公司为了能够在其施工的印度尼西亚苏门答腊岛南部的Suban气田进行大孔径、高产井钻井,在Suban10井应用了带有井下调配阀(DDV)的压力调控钻井(MPD)技术,尤其是该技术的衍生技术——平衡泥浆液柱压力钻井(PMCD)技术。该井的试验证明:对大型断裂层的高产井进行钻井和完井施工时,将MPD和DDV技术结合起来应用,可以使井的产量达到300MMcfd,同时也提高了钻井和完井施工的安全性和高效性。应用MPD/DDV联合系统,即使发生了完全不能建立循环的井漏,也可以继续进行钻井。MPD/DDV系统增加了施工的安全系数,减少了所需要的泥浆量和堵漏材料(LCM),最大限度地减少了对地层的损害,使得下入和安装完井装置时尽可能不需要压井。MPD和DDV技术的联合应用将对那些地层压力较低但产量较高的井进行钻井,可极大地提高天然气田开发的经济效益,具有广阔的应用前景。
ConocoPhillips was instrumental in using pressure-controlled drilling (MPD) with Downhole Bleed Valve (DDV) at Suban 10 in order to be able to conduct large-bore, high-yield well drilling in the Suban field in southern Sumatra, where it was constructed. In particular, Technology Derivation Technology - Balanced Slurry Column Pressure Drilling (PMCD) Technology. Experiments in this well have demonstrated that the combination of MPD and DDV techniques for high-yield wells in large fractured formations can result in well production of up to 300 MMcfd while also improving the safety of drilling and completion operations And efficient. With the MPD / DDV combined system, drilling can continue even though a cycle leak can not be established at all. The MPD / DDV system increases the safety factor for construction, reduces the amount of mud and plugging material (LCM) required, minimizes damage to the formation, minimizes the need to press in and out of the well completion installation well. The combined application of MPD and DDV technology will drill wells with lower formation pressure and higher production volume, which can greatly improve the economic benefits of natural gas field development and have broad application prospects.