CAJ | 학술논문

针对鄂尔多斯盆地浅层水平井钻井过程中的井壁稳定、井眼清洁、润滑减阻和储层保护的技术难题，通过分析储层的地质特征，在该区原用聚合物钻井液基础上，选择性加入MC－VIS、ABSN、纳米乳液和复合屏蔽暂堵剂，形成纳米乳液封堵钻井液体系，在保证施工安全的前提下，可将岩心渗透率恢复提高至83．50％。通过七平1井的应用表明，纳米乳液封堵钻井液体系能够满足低渗透油层大位移水平井的钻井施工需求，为高效开发鄂尔多斯盆地浅层油气藏提供技术支持。
침대악이다사분지천층수평정찬정과정중적정벽은정、정안청길、윤활감조화저층보호적기술난제，통과분석저층적지질특정，재해구원용취합물찬정액기출상，선택성가입MC－VIS、ABSN、납미유액화복합병폐잠도제，형성납미유액봉도찬정액체계，재보증시공안전적전제하，가장암심삼투솔회복제고지83．50％。통과칠평1정적응용표명，납미유액봉도찬정액체계능구만족저삼투유층대위이수평정적찬정시공수구，위고효개발악이다사분지천층유기장제공기술지지。
In order to solve the hard technical difficulties of wellbore stability, borehole-cleaning, lubricating&resistance reducing and reservoir protection for shallow horizontal well drilling in Ordos basin, by the analysis on the geological char-acteristics of the reservoir and based on the previous use of polymer drilling fluid, MC-VIS, ABSN, nano-emulsion and composite shielding temporary plugging agent were selectively added to develop a nano-emulsion plugging drilling fluid sys-tem.On the premise of safety drilling, the core permeability was restored up to 83.50%.By the application in Qiping 1, it is showed that the nano-emulsion plugging drilling fluid system can satisfy drilling construction requirements of shallow extended-reach horizontal well in low permeability reservoir and provide technical support for efficient exploiting shallow res-ervoirs in Ordos.