3月25日，中国海油发布消息，我国在渤海超5000米的地层钻探发现一口高产油气井，测试日产油气当量近1400立方米，创造了我国海上深层油气探井日产最高纪录，为进一步勘探海洋深层油气资源、保障国家能源安全具有重要意义。

该井位于渤海中部海域，紧邻渤海最大富烃凹陷——渤中凹陷，所在构造为火山岩储层，测试日产原油855立方米、日产天然气超50万立方米，折合油气当量约1400立方米，勘探前景广阔。

“从我国海洋油气勘探实践来说，通常把埋深超过4500米的地层称为超深层，我们部署的这口探井埋藏在海底超5000米的潜山，地层温度超过180摄氏度，压力超过70兆帕，是国内罕见的高温、高压超深层油气井，完成钻探并获得高产实属不易。”中国海油天津分公司副总经理周家雄介绍说。

渤海火山岩潜山分布范围广，具有岩性变化快、储层非均质性强等特点，勘探难度极大，多年来一直未获突破，属于传统意义的勘探“禁区”。

On March 25, China National Offshore Oil Corporation (CNOOC) announced that a high-yield oil and gas well was found in the Bohai Sea in the formation of more than 5,000 meters, and the daily output of oil and gas equivalent was nearly 1,400 cubic meters, creating the highest daily output record of China's offshore deep oil and gas exploration well, which is of great significance for further exploration of deep oil and gas resources in the ocean and ensuring national energy security.

The well is located in the central sea area of Bohai Sea, close to Bozhong Sag, the largest hydrocarbon rich depression in Bohai Sea. It is located in the volcanic rock reservoir structure. The daily output of crude oil is 855 cubic meters and natural gas is over 500,000 cubic meters, equivalent to about 1,400 cubic meters of oil and gas equivalent.

"From the perspective of China's offshore oil and gas exploration practice, the buried depth of more than 4,500 meters is usually referred to as ultra-deep layer. The exploration well we deployed is buried in the seabed of more than 5,000 meters buried hill, the formation temperature of more than 180 degrees Celsius, the pressure of more than 70 mpa, is a rare high-temperature and high-pressure ultra-deep oil and gas well in China, it is not easy to complete drilling and obtain high yield." Cnooc Tianjin branch deputy general manager Zhou Jiaxiong said.

The volcanic buried hills in Bohai Sea are widely distributed and have the characteristics of rapid lithology change and strong reservoir heterogeneity, so it is very difficult to explore and has not been broken through for many years.