摘要
莺歌海盆地底辟构造带浅层已相继发现了东方1-1和乐东22-1等一批具有商业价值的天然气田.在这些已发现气田的含气层中,既有产能较高的高电阻率中-细砂岩气层,也存在产能较低的低电阻率粉砂岩气层.低电阻率气层的电阻率与邻近水层或泥岩层极为接近,造成了气层识别和含水饱和度计算的困难.低电阻率气层的地质储量约占总地质储量的20%～30%,地层测试结果表明,低电阻率气层具有一定的产能,因此,开展低电阻率气层测井解释方法研究具有重要的现实意义和极大的实用价值.文中对莺歌海盆地底辟构造带低电阻率气层的形成机理及识别方法进行了探讨.
Several commercial gas fields such as DF1?1 and LD22?1 have been successively discovered in the diapiric structure zone in Yinggehai basin, in which there are both sandstone reservoirs higher in production capacity and resistivity, and siltstone reservoirs lower in production capacity and resistivity. The siltstone reservoirs are very similar to their surrounding water_bearing beds or mudstone beds in resistivity, resulting in difficulties in gas reservoir identification and water saturation calculation. The gas reservoirs with lower resistivity may account for 20 to 30 percent of the total geological reserves in the diapiric structure zone, and have proven to have a certain production capacity. Therefore, it is practically significant and valuable to study log interpretation of gas reservoir with lower resistivity.
出处
《中国海上油气（地质）》
2002年第1期45-53,共9页
China Offshore Oil and Gas(Geology)
