FEODE FECCS — the only domestically developed valve-type continuous circulation drilling system in China. By maintaining uninterrupted mud circulation during connection make-up, FECCS eliminates pressure spikes and ECD fluctuations across critical formations. Verified at CNOOC's first ultra-deep ERD well EP21-4-A1H — 9,508m measured depth — in 2024. 远东 FECCS 是国内唯一自主研发的阀式连续循环钻井系统。通过接立柱过程中持续保持钻井液循环，FECCS 消除关键地层的压力波动与 ECD 跳变。2024年于中海油首口超深大位移井 EP21-4-A1H（井深 9,508 米）完成验证。
Continuous cuttings transport — a cleaner hole连续返屑带砂，井眼更清洁
Eliminates pressure surges — stable wellbore pressure有效消除压力激动，井眼系统压力稳定
Higher drilling efficiency, lower well cost提高钻井时效，降低钻井成本
Steady borehole conditions — better wellbore quality保障井筒压力平稳，井身质量更优
Only Domestic Valve-Type CCS国内唯一阀式连续循环系统
The only domestically developed valve-type continuous circulation drilling system in China. One of the few providers globally to offer HPV + PLC + Manifold intelligent control for valve-type CCS systems.国内唯一自主研发的阀式连续循环钻井系统。全球少数几家掌握 HPV + PLC + Manifold 智能控制阀式连续循环系统的提供商之一。
Anti-Drop Valve Plate Design阀板防脱安全设计
Failure-safe valve plate design — if the plate detaches, it falls into the circulation sub interior rather than into the wellbore, eliminating downhole fishing risk.失效安全阀板设计 — 阀板若脱落，落入循环短节内部而非井筒，杜绝井下打捞风险。
Eliminates ECD Fluctuations消除 ECD 跳变
Continuous mud circulation through connection make-up keeps ECD steady — preventing differential sticking, lost circulation, and formation damage in narrow drilling windows.接立柱过程中持续循环维持 ECD 稳定 — 防止差压卡钻、漏失和窄密度窗口井段的储层伤害。
Proven ROP & Cost Benefits验证的提速与降本效益
Across 25 production wells, FECCS delivered an average 18% acceleration in drilling rate of penetration and 12% reduction in per-well cost — directly improving project economics.在 25 口生产井应用中，FECCS 平均提速 18%，单井降本 12% — 直接改善项目经济性。
Contributed to 14 Discoveries参与 14 个油气田发现
FECCS-enabled operations have contributed to the discovery of 14 oil and gas fields in the South China Sea and Bohai basins — including high-pressure exploration targets previously considered un-drillable.FECCS 支持的作业参与发现南海及渤海 14 个油气田 — 包括此前被认为难以钻达的高压勘探目标。
Long-Duration In-Hole Capability长时间连续入井能力
The 7″ continuous circulation sub is qualified for up to 240 hours of continuous in-hole operation, supporting deep-section drilling without intermediate trips.7″ 连续循环短节经过验证可连续入井 240 小时，支持深井段长距离钻进无需中途起下钻。
Enping field, Hailong 9 platform. 12-1/4″ section drilled 4,594–8,131m + 8-1/2″ section 8,131–9,508m. 164 XT57 circulation subs deployed. Single-run drilling distance of 1,744m — record-setting. ECD held steady at 1.34–1.45 sg through F2/F3 fault crossings; connection time reduced to 8–9 min. 恩平油田，招商海龙九平台。12-1/4″ 井段钻进 4,594–8,131m + 8-1/2″ 井段 8,131–9,508m。投运 XT57 循环短节 164 个。单趟钻进 1,744m — 创纪录。穿越 F2/F3 断层段 ECD 稳定在 1.34–1.45 sg；接立柱时间提效至 8–9 分钟。
July–August 2021. First FECCS deployment in the Bohai Basin. 8-1/2″ hole section 3,906–5,001m (length 1,095m). Cuttings concentration reduced from 3.8% to 0.5%, delivering 88% cleaning efficiency and stable hole conditions through highly faulted sections. 2021年7-8月。渤海盆地首次部署 FECCS。8-1/2″ 井眼 3,906–5,001m（段长 1,095m）。岩屑浓度由 3.8% 降至 0.5%，净化效率达 88%，复杂断裂带井段井况保持稳定。
Panyu 10-8 field extended-reach drilling wells. FECCS eliminated pump-off and pump-on pressure spikes during connections, maintaining hydraulic equilibrium across long horizontal sections — preventing formation breakdown and lost circulation in narrow operating windows. 番禺 10-8 油田大位移井作业。FECCS 消除接立柱过程中的停泵/开泵压力波动，长水平段水力平衡保持稳定 — 在窄作业窗口井段防止地层破裂与漏失。