深层致密砂岩气藏充气钻完井技术研究与应用

THE RESEARCH AND APPLICATION OF AERATED GAS DRILLING FOR TIGHT-GAS-SANDSTION RESERVOIR OF DEEP WELL

巴喀致密砂岩气藏作为勘探开发重点区块,增储上产潜力较大,为有效降低对天然气藏污染,进而提高单井产量和真实评价区块储量规模,本文在分析钻完井难点基础上,开展了深层致密砂岩气藏井身结构、充气状态下注入参数、冻胶阀注入工艺等充气欠平衡技术优化研究,通过欠平衡钻井现场试验,在非目的层和目的层钻井提速、储层保护和发现方面取得了显著的效果,进一步验证了北部山前带和南部斜坡带储层的真实产能,为提高致密砂岩气藏勘探开发效果提供了一条行之有效的途径。

Baka block of tight-gas-sandstone reservoir exploration and development is a key block with production potential.In order to reduce pollution effectively of gas accumulation,and improve the output and assess pay-zone scale acourately,in this paper,the writer analyzed difficulties of drilling well completion;deep tight-gas-sandstone gas casing program;inflatable condition,frozen into parameters such as smart packer injection technology,then carried out the optimization technology inflatable under-balanced drilling field test,and in the target zone and other zones with speeding up drilling,reservoir protection and its finding,there is a significant effect,so as to verify its real reservoir productivity,and provide an effective approach to improving development effect.