该公司表示，这口井代表了中国近海超深水碳酸盐岩勘探的首次重大成功。

该井位于碳氢化合物资源丰富的白云凹陷，距深圳东南约 300 公里，水深近 1640 米。

钻井垂直深度近 3000 米，完成深度近 4400 米，在水平段揭示了约 650 米的含气层。

该井测试绝对无阻天然气产量为430 000立方米/天。

该能源公司指出，这一发现揭示了中国超深水Globigerinid灰岩的良好勘探前景，并将推动白云凹陷的天然气勘探工作。

中海油总地质师徐长贵表示：“此前，我国超深水勘探主要集中在碎屑岩领域。

该井的成功，首次揭示了我国超深水碳酸盐岩巨大的储量潜力，标志着勘探认识和作业技术取得重大突破。

“此外，该发现靠近荔湾3-1气田现有的生产设施，可以利用这些设施来开发新发现，从而经济高效地开发珠江口盆地深水区的天然气资源。”

本月初，中海油位于北部湾的乌石17-2油田开发项目正式投产，平均水深约28米。

到 2026 年，该项目预计将达到约 9900 桶油当量/天的峰值产量，石油将被归类为轻质原油。

上个月，中海油获得官方批准，其南海陵水36-1气田的探明天然气地质储量超过1000亿立方米。

随着此项批准，南海地区天然气总探明地质储量已超过1万亿^立方米。

在线阅读文章：https://www.oilfieldtechnology.com/exploration/12092024/cnooc-announces-major-exploration-success-in-pearl-river-mouth-basin/

The company said this well represents the first substantial exploration success in ultra-deepwater carbonate rocks offshore China.

Situated in the hydrocarbon-rich Baiyun Sag, approximately 300 km south-east of Shenzhen, the well reached a water depth of nearly 1640 m.

It was drilled to a vertical depth of nearly 3000 m and finished at a depth of almost 4400 m, revealing a gas pay zone of around 650 m in the horizontal section.

Testing of the well yielded an absolute open flow natural gas production rate of 430 000 m³/d.

The energy company noted that the discovery has unveiled promising exploration prospects in the ultra-deepwater Globigerinid limestone in China and is set to advance the natural gas exploration efforts in Baiyun Sag.

CNOOC Chief Geologist Xu Changgui said: “Previously, exploration in China's ultra-deepwater areas mainly focused on clastic rocks.

The success of this well has, for the first time, revealed the enormous potential of carbonate rocks in China’s ultra-deep waters, marking significant breakthroughs in both exploration understanding and operational techniques.

“In addition, this discovery is close to the existing production facilities of Liwan3-1 gas field, which could be utilised to develop the new discovery, thereby enabling economic and efficient development of natural gas resources in the deep waters of the Pearl River Mouth Basin.”

Earlier in the month, CNOOC commenced production at the Wushi 17-2 Oilfields Development Project in the Beibu Gulf, with an average water depth of around 28 m.

By 2026, the project is expected to reach peak production of roughly 9900 boe/d, with the oil being classified as light crude.

Last month, CNOOC received official approval for a proved gas in-place volume exceeding 100 billion cubic metres at the Lingshui 36-1 field in the South China Sea.

With this approval, the total proved gas in-place in the South China Sea has now exceeded 1 trillion m³.

Read the article online at: https://www.oilfieldtechnology.com/exploration/12092024/cnooc-announces-major-exploration-success-in-pearl-river-mouth-basin/