我国海域油气勘探工作的回顾与展望

REVIEW AND PROSPECT OF CHINA'S OIL AND GAS EXPLORATION IN MARINE AREAS

我国海域的油气地质工作开始于1959年,目前已发现和圈定的主要沉积盆地有六个.1979年开始执行了对外合作勘探的方针,其合作面积有15万平方公里,钻井190余口,获油气井83口,已有两个油田投入生产.发现井及高产井不断出现,显示了我国海域的油气远景良好.

China's oil and gas exploration in marine areas began in 1959. The work was mainly limited in offshore and shelves, in which six hydrocarbon-bearing basins (the Bohai Sea, the South China Sea, the East China Sea, the Zhujiang-kou, the Yinggehai Sea and the Beibu Gulf basins) have been discovered and trapped. Thier total area comes to about 8xl05km2. Since 1979, cooperations with foreign companies have been carried out in all the basins except the East China Sea basin. In 1983 and 1986, there were two rounds of invited tenders for foreign companies respectively. China has already signed 37 projects on petroleum exploration and 3 geophysical-prospec-ting agreements with 45 oil companies from 12 countries. The cooperation areas are up to 15xl04krn2. At present, two oilfields have gone into productio'n. Up to June of 1988, 484xl03km2 of seismic profiles were accomplished, 190 wells drilled' (83 of them saw oil and gas), and 131 local structures struck, in which 38 were petroliferous ones. The total success ratio comes to 30 percent.