中新网8月7日电 8月7日，中国海油对外宣布，在海南岛东南海域发现的陵水36-1气田新增探明储量顺利通过国家有关部门评审备案，天然气探明地质储量超1000亿立方米，为全球首个超深水超浅层大型气田，实现海洋油气勘探理论领域的创新，填补全球技术空白。至此，中国海油在南海北部莺歌海、琼东南、珠江口三个盆地累计探明天然气地质储量超过1万亿立方米，“南海万亿大气区”建设从蓝图走向现实，对保障国家能源安全、优化我国能源供给结构具有重大意义。
2018年，中国海油启动“七年行动计划”，明确到2025年建成“南海万亿大气区”，不断加大对海上复杂油气资源勘探的攻关力度。2022年，中国海油在琼东南盆地宝岛凹陷近5000米地层深处斩获我国首个深水深层气田宝岛21-1，此时距离实现“南海万亿大气区”建设目标仅剩不到1000亿立方米的储量缺口。
“为了确保海上钻井作业的安全，业内一般会在井位设计时避免穿越危险的浅层气，而我们这次恰恰是主动迎难而上、危中寻机。”中国海油海南分公司工程技术作业中心总经理陈浩东说。经过严密的技术论证，中国海油作业团队以打破常规的巨大勇气创造性实施全球首例超深水超浅层钻井作业，安全顺利完成超深水超浅层气藏钻井、取心、测试等多项作业目标，高质量获取相关区域地层资料，完整准确勾勒出大气田的地下全貌，实现对全球首个超深水超浅层的精准快速评价。
中国海油总地质师徐长贵表示：“陵水36-1的勘探实践，揭示了将超深水超浅层气资源从影响钻完井作业安全的‘灾害气’变成具备开发价值的清洁能源的可能性，对我国乃至全球类似海域条件的资源勘探开发具有重要指导意义。”
陵水36-1气田勘探取得成功，进一步完善了我国自主建立的中国特色深水复杂油气资源勘探开发技术体系，充分验证了其先进性和可靠性，气田储量的落实也补上了“南海万亿大气区”建设版图的最后一块拼图。
这一重大发现不仅为中国提供了丰富的清洁能源，也为全球海洋油气勘探领域贡献了中国智慧和中国方案，对于推动我国能源结构调整和可持续发展具有深远意义。
英语如下：
Title: “South China Sea Gigantic Gas Field: CNOOC Innovates to Discover a Thousand Billion Cubic Meters of Shallow Sub-sea Gas Field”
Keywords: South China Sea Gas Field, Thousand Billion Cubic Meters, Technological Innovation
Content:
August 7, 2023 – CNOOC announced that the newly discovered Lingshui 36-1 gas field in the southeast waters of Hainan Island has successfully passed the review and filing by relevant state departments. The gas field has been proven to have geological reserves exceeding 10 billion cubic meters, making it the world’s first large gas field in ultra-deep waters at a shallow stratum, realizing an innovation in the field of marine oil and gas exploration theory and filling a global technical gap. As of now, CNOOC’s cumulative proven natural gas geological reserves in the Northern Parallel Zone of the South China Sea, Yongkang Bay, Qiongdongnan, and Zhujiang Estuary have exceeded 1 trillion cubic meters, bringing the “South China Sea Trillion Cubic Meter Gas Zone” from a blueprint to reality. This has significant implications for ensuring national energy security and optimizing China’s energy supply structure.
In 2018, CNOOC launched the “Seven-Year Action Plan” to build the “South China Sea Trillion Cubic Meter Gas Zone” by 2025, increasing its efforts to explore complex offshore oil and gas resources. In 2022, CNOOC discovered China’s first deep-water deep-stratum gas field, Bao Island 21-1, in the Baodong depression of the Qiongdongnan basin, narrowing the reserve gap for achieving the goal of building the “South China Sea Trillion Cubic Meter Gas Zone” to less than 10 billion cubic meters.
“To ensure the safety of offshore drilling operations, the industry generally avoids crossing dangerous shallow gas layers in the well design,” said Chen Haodong, General Manager of the Engineering Technology Operation Center of CNOOC Hainan Branch. “This time, we actively sought out the challenge and found opportunities in the crisis.” After rigorous technical analysis, CNOOC’s operation team boldly implemented the world’s first ultra-deep-water, ultra-shallow-stratum drilling project, safely completing various drilling, coring, and testing objectives in the ultra-deep-water, ultra-shallow-stratum gas reservoir. The team high-quality obtained geological data from the area, accurately depicting the full underground profile of the gas field and achieving a precise and rapid evaluation of the global first ultra-deep-water, ultra-shallow-stratum gas field.
CNOOC’s Chief Geologist Xu Changgui stated, “The exploration practice of Lingshui 36-1 has revealed the possibility of transforming ultra-deep-water, ultra-shallow-stratum gas resources from ‘hazardous gas’ affecting drilling and completion operations into clean energy with development value, which is of great significance for the exploration and development of resources in similar offshore conditions both in China and globally.”
The successful exploration of Lingshui 36-1 gas field has further perfected China’s self-established technical system for the exploration and development of deep-water complex oil and gas resources, fully verifying its advanced and reliable nature. The confirmation of the gas field’s reserves completes the final piece of the puzzle for the “South China Sea Trillion Cubic Meter Gas Zone” construction map.
This significant discovery not only provides China with abundant clean energy but also contributes Chinese wisdom and solutions to the global marine oil and gas exploration field, with profound implications for the adjustment of China’s energy structure and sustainable development.
【来源】http://www.chinanews.com/cj/2024/08-07/10265129.shtml
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