CAJ | 학술논문

川南探区存在地层古老、可钻性差、机械钻速慢、钻井成本高及投资收益低等问题，为实现该探区页岩气高效勘探开发，在分析探区工程地质及钻井工程技术难点的基础上，结合页岩气储层改造技术要求，开展了井身结构方案优化、优快钻井技术以及经济成本分析，形成了以φ139.7 m m套管完井的三开钻井技术方案，指导完成了WY1井、YY1井等探井的设计，为川南探区第一轮页岩气勘探提供了技术指导。
천남탐구존재지층고로、가찬성차、궤계찬속만、찬정성본고급투자수익저등문제，위실현해탐구혈암기고효감탐개발，재분석탐구공정지질급찬정공정기술난점적기출상，결합혈암기저층개조기술요구，개전료정신결구방안우화、우쾌찬정기술이급경제성본분석，형성료이φ139.7 m m투관완정적삼개찬정기술방안，지도완성료WY1정、YY1정등탐정적설계，위천남탐구제일륜혈암기감탐제공료기술지도。
T he exploration area in Southern Sichuan is present in ancient strata ,w here difficulties such as poor drillability ,slow penetration rate ,high drilling cost and low investment return exist .To achieve an efficient shale gas exploration in this exploration area ,we carried out activities including well structure op-timization ,optimal and fast drilling technology and economic cost analysis on the basis of analyses on drill-ing technical difficulties in the exploration area and shale gas reservoir stimulation technology require-ments .As a result ,a drilling program based on three times of spudding and completion with φ139.7 mm casings was developed ,which guided the design of WY1 and YY1 exploratory wells successfully and pro-vided technical guidance for the first round shale gas exploration in Southern Sichuan .