2,083m
China's Deepest P&A (Jan 2024)中国最深弃井纪录（2024年1月）
9,508m
Ultra-Deep ERD Drilled with FECCS (2024)FECCS超深大位移井井深（2024年）
DEEPWATER ABANDONMENT MILESTONES深水弃井里程碑

Progressively deeper, every operation每一次作业，持续刷新深度

Every Chinese deepwater P&A depth record has been set with FEODE's patented outside-suspension abandonment tool — wellhead cutting, cement plug placement and wellhead recovery completed in a single trip. 中国深水弃井的每一项水深纪录，均由远东专利深水外悬挂弃井工具创造——一趟管柱完成井口切割、注水泥塞与井口头回收。

2024
2,083 m
YL10-6-4 — China's All-Time Deepest Well Abandonment YL10-6-4井 — 中国最深弃井作业
January 7, 2024, rig HYSY981, Yongle area, South China Sea. The first well abandonment in China beyond 2,000 m water depth: the 36″ × 1.5″-wall conductor and 20″ × 1″-wall casing were severed and the 18-3/4″ high-pressure wellhead recovered in 14 hours of operating time, in a single trip. Current national record. 2024年1月7日，"海洋石油981"平台，南海永乐海域。中国首次突破2,000米水深的弃井作业：一趟管柱内、14小时作业时间完成36″×1.5″壁厚导管与20″×1″壁厚套管切割，并回收18-3/4″高压井口头。现行全国纪录。
CHINA RECORD — CURRENT中国纪录 — 现行
2019
1,901 m
YL8-1-2 — Blue Whale I Platform YL8-1-2井 — 蓝鲸一号平台
October 3, 2019, Yongle ultra-deepwater area. At a cutting depth of 1,942.8 m, the 20″ × 36″ × 2″-wall X56 high-grade casing-and-conductor string was severed in just 11 hours and recovered in the same trip — a national record at the time, set on the Blue Whale I semi-submersible. 2019年10月3日，永乐超深水区。在1,942.8米切割深度，仅用11小时割断20″×36″×2″壁厚X56高钢级套管与导管并同趟回收——蓝鲸一号半潜式平台，作业时的全国纪录。
2019
1,831 m
YL8-3-1 — First Past 1,800 m YL8-3-1井 — 首破1,800米
August 27, 2019, Blue Whale I platform. Broke the Chinese deepwater abandonment record and proved the system beyond 1,800 m — five weeks before extending the record again on YL8-1-2. 2019年8月27日，蓝鲸一号平台。打破中国海域弃井作业水深纪录、首次突破1,800米——五周后又在YL8-1-2井再度刷新。
2012
784 m
HYSY981 — First Deepwater Campaign of the Fully Domestic System 海洋石油981平台 — 全国产工具系统首次深水作业
Developed under China's national major science and technology program, the fully domestic outside-suspension cutting and recovery system completed its first deepwater campaign at 784 m on HYSY981, China's flagship deepwater semi-submersible. 依托国家重大科技专项研制的全国产外悬挂切割回收工具系统，在中国旗舰深水半潜式平台"海洋石油981"上完成784米水深首次深水作业。
2009
—
China's First Deepwater Well Abandonment Service 中国首次深水弃井服务
November 18, 2009. The operation that broke the foreign monopoly on deepwater P&A in China, and the first deployment of FEODE's proprietary outside-suspension abandonment tool system. 2009年11月18日。打破国外公司对中国深水弃井垄断的历史性作业，远东自主外悬挂弃井工具系统首次部署。
CHINA FIRST中国首次
CONTINUOUS CIRCULATION DRILLING · FIELD PERFORMANCE连续循环钻井 · 现场实绩

Steady pressure, clean hole — measured, not promised稳定的井底压力、清洁的井眼——用实测数据说话

FECCS is China's only domestically developed valve-type continuous circulation system, fielded since 2011 and now in its fifth generation. The numbers below come from measured logging-while-drilling and rig data on client wells. FECCS是国内唯一自主研发的阀式连续循环系统，2011年投入现场应用，现已迭代至第五代。以下数据均来自客户井的随钻测量与钻台实测记录。

<5%
ECD fluctuation with FECCS — vs 17.6–21% on conventional connectionsFECCS作业段ECD波动率——常规接立柱为17.6–21%
+71%
Faster back-reaming trips — 45.86 vs 26.82 m/h (EP21-4-A1H)倒划眼起钻提速——45.86对比26.82米/小时（EP21-4-A1H井）
+18%
Average ROP improvement across FECCS wells, ~12% cost saving per wellFECCS应用井平均机械钻速提升18%，单井成本节约约12%
2024
9,508 m
EP21-4-A1H — China's Deepest Offshore Well EP21-4-A1H井 — 中国海上第一深井
CM Hailong 9 platform, Enping 21-X marginal field, eastern South China Sea. At 9,508 m measured depth it became China's deepest offshore well, setting national records for both well depth and horizontal displacement (horizontal-to-vertical ratio 4.43). Drilled through three fault zones inside a narrow density window on four key technologies — ultra-ERD trajectory control, optimised drilling-fluid system, fully-floating & rotating casing running, and continuous circulation. FECCS covered 4,594–9,508 m (68.5% of the open hole): ECD held at 1.32–1.45 g/cm³ with under 5% fluctuation, cuttings below 2% at 36.7 m/h ROP, longest single run 1,744 m — no losses, no collapse, no stuck pipe. 招商海龙9号平台，南海东部恩平21-X边际油田。井深9,508米，成为中国海上第一深井，同时创下中国大位移井井深纪录与水平位移纪录（水垂比4.43）。在窄安全密度窗口内穿越三条断层带，依靠四大关键技术——超大位移井轨迹精细控制、钻井液体系优选、全漂浮及旋转下套管、连续循环。FECCS覆盖4,594–9,508米井段（占裸眼段68.5%）：ECD稳定在1.32–1.45 g/cm³、波动小于5%，机械钻速36.7米/小时下岩屑浓度低于2%，单趟最长进尺1,744米——全程无井漏、无垮塌、无卡钻。
CHINA'S DEEPEST OFFSHORE WELL · DUAL NATIONAL RECORD中国海上第一深井 · 双项全国纪录
2021
3 wells3口井
JZ25-1B Platform — First FECCS Campaign in Bohai Bay JZ25-1B平台 — FECCS渤海首秀
July–August 2021. Three 8-1/2″ sections drilled back-to-back (wells B7, B22P1, B7P1) in unconsolidated, cuttings-prone formations: measured cuttings concentration fell from 3.8% to as low as 0.4%, and strings tripped straight to the shoe without back-reaming. 2021年7–8月。在胶结性差、易沉砂地层连续完成三口井（B7、B22P1、B7P1）8-1/2″井段：实测岩屑浓度由3.8%降至最低0.4%，起钻可直接短起至套管鞋、无需倒划眼。
2015
ERD
PY10-8-A3 — Panyu Field, Pearl River Mouth Basin PY10-8-A3井 — 珠江口盆地番禺油田
Extended-reach well in a pressure-sensitive formation: ECD held between 1.42–1.58 g/cm³ with fluctuation within ±0.018, saving 49 rig-hours against plan. 压力敏感地层大位移井：ECD稳定控制在1.42–1.58 g/cm³、波动±0.018以内，较计划节省钻机时间49小时。
2018
2.5×
PY10-5-A1H — Panyu Field's Hardest ERD Well PY10-5-A1H井 — 番禺油田最难大位移井
The field's most difficult extended-reach well: 7,646 m MD, horizontal-to-vertical ratio 2.76, a 4,822 m tangent section, and a fault at 6,840 m that collapsed the safe mud-density window from 1.20–1.81 to just 1.20–1.32 g/cm³, all on full-section oil-based mud. Continuous-circulation-valve drilling over the φ215.9 mm section (6,122–7,148 m, 1,026 m) held ECD within 2.3% and capped torque fluctuation at 2.86 kN·m. Versus an offset well drilled without CC: average ROP 19.30 vs 7.66 m/h (≈2.5×), max torque fluctuation 2.86 vs 7.40 kN·m. The φ177.8 mm liner ran straight to bottom with zero wiper trips — eliminating a 41-hour dedicated trip and 39 hours of overrun. 该油田难度最高的大位移井：井深7,646米、水垂比2.76、稳斜段长4,822米；6,840米处一断层使安全密度窗口由1.20–1.81骤缩至1.20–1.32 g/cm³，且全井段油基钻井液钻进。连续循环阀钻井应用于φ215.9毫米井段（6,122–7,148米、段长1,026米），ECD波动控制在2.3%以内、扭矩波动仅2.86 kN·m。对比未用连续循环的邻井：平均机械钻速19.30对比7.66米/小时（约2.5倍），最大扭矩波动2.86对比7.40 kN·m。φ177.8毫米尾管直接下到底、零通井——省去一趟41小时专门通井和39小时工期超期。
CONTINUOUS-CIRCULATION VALVE · 2.5× ROP连续循环阀 · 机械钻速2.5倍
2011
Gen 1一代机
First-Generation FECCS Enters Service 第一代FECCS投入应用
China's first domestically developed valve-type continuous circulation system entered field service in November 2011 — iterated through 2013, 2016 and 2018 generations to today's fifth-generation system with one-touch flow-path switching and PLC control. 2011年11月，国内首套自主研发阀式连续循环系统投入现场应用——历经2013、2016、2018年三轮迭代，发展到今天具备一键流道转换与PLC控制的第五代系统。

Peer-reviewed. These applications are documented in technical papers — “Offshore drilling engineering technologies for ultra-large extended-reach wells in China and their application” (China Offshore Oil and Gas, 2025) and “Application of continuous circulation valve drilling in extended-reach wells of the Panyu Oilfield” (Journal of Southwest Petroleum University, 2018). 同行评审佐证。上述应用已发表于技术论文——《中国海上超大位移井钻井工程技术及应用》（《中国海上油气》，2025）与《连续循环阀钻井技术在番禺油田大位移井的应用》（《西南石油大学学报》，2018）。

FECCS Field Case Studies →FECCS 现场案例详解 →

SUBSEA WELLHEAD SYSTEMS · 20 YEARS OF SERVICE水下井口系统20年服务经验

PSL 4S — highest-grade subsea wellhead service casesPSL 4S最高等级水下井口服务案例

2026
588 m
FE-15 Subsea Wellhead System — Full-Cycle Offshore Service FE-15水下井口系统全流程海上作业服务
March 2026, Pearl River Mouth Basin. FEODE's highest-specification 3,000 m-class / 15,000 psi subsea wellhead system completed the full operational sequence on a sixth-generation semi-submersible: 36″ conductor jetted and released, 18-3/4″ high-pressure housing run and cemented, BOP stack pressure-tested, 9-5/8″ casing hanger and seal assembly set and verified — and the wellhead finally abandoned with our own P&A tools. Operations withstood sea state 6 with 4.5 m significant waves. 2026年3月，珠江口盆地。远东最高等级3,000米级/15,000 psi水下井口系统，在第六代半潜式平台上完成全套作业：36″导管喷射下入并脱手、18-3/4″高压井口头下入固井、防喷器组试压、9-5/8″套管挂与密封总成坐挂并验证——最终以自有弃井工具完成井口弃置。作业经受住6级海况、4.5米有效波高考验。
FISHING & WELL INTERVENTION · 40 YEARS打捞与井下作业 · 四十年

Complex downhole recovery, across China and three continents复杂井下打捞 — 横跨中国与三大洲

2018
100%
SZ36-1-D03 — Three-Layer Concentric Fish Fully Recovered SZ36-1-D03井 — 三层同心落鱼全部打捞
A 20-year-old, high-angle workover well with a failed gravel pack: three concentric fish strings — 4″ screen, 2-7/8″ wash pipe and 2-3/8″ screen — fished section by section through severe corrosion (fish parting at only 4 t overpull), polymer packing and incomplete well records. Across 53 runs FEODE recovered all ≈690 m of fish down to the permanent packer at 2,015 m, returning the well to production. 一口井龄20年、大斜度、早期充填失败的大修井：井下三层同心落鱼——4″筛管、2-7/8″冲管、2-3/8″筛管——在严重腐蚀（落鱼过提仅4吨即拔断）、聚合物埋实、资料不全的条件下逐段打捞。经53趟作业，远东打捞出全部约690米落鱼至2,015米永久封隔器顶，使油井恢复生产。
FLAGSHIP COMPLEX FISHING CASE复杂打捞旗舰案例
2015–
Indonesia印尼
Pertamina — Ongoing Fishing Operations & Technical Services Pertamina — 持续打捞作业与技术服务
Continuous fishing operations and technical services for Pertamina since 2015, supported by FEODE's Indonesian joint-venture company. 自2015年起为印尼国家石油公司Pertamina持续提供打捞作业与技术服务，由远东印尼合资公司就地支持。
2014
W. Africa西非
Equatorial Guinea — Fishing Tools & Services, CNOOC EG Branch 赤道几内亚 — 中海油赤几分公司打捞工具与服务
Fishing tools and services delivered for CNOOC's Equatorial Guinea branch, with additional deepwater project support extending to Congo. 为中海油赤道几内亚分公司提供打捞工具与作业服务，并将深水项目支持延伸至刚果海域。
2009
Russia俄罗斯
Sakhalin — Fishing Services for Venineft 萨哈林 — 为Venineft提供打捞服务
Fishing services delivered for Russia's Venineft on the Sakhalin project — sub-arctic operating conditions. 为俄罗斯Venineft萨哈林项目提供打捞服务——亚极地作业环境。
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S. & SE Asia南亚·东南亚
International Completion Campaigns 国际完井作业
Completion equipment and field service delivered on Bangladesh's Sylhet-10 well and on offshore and onshore wells across Southeast Asia, alongside domestic HPHT completions for CNPC and no-kill completions for Sinopec offshore. 为孟加拉国Sylhet-10井及东南亚多口海上、陆地井提供完井设备与现场服务；国内同期完成中石油高温高压完井与中石化海上不压井完井作业。

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