CAJ | 학술논문

河北省沧县枣园勘查区石盐资源普查项目钻探施工中存在取心难度大、泥浆护壁困难、施工成本高等问题.在首眼钻孔的施工中,选择庆申-98-Ⅱ型双管钻具,硬质合金刮刀、复合片钻头,提钻取心的方法完成取心施工.通过临界钻时的应用、岩心堵塞预防等措施提高了工效,采用分段泥浆护壁方法确保了孔壁稳定.该孔的钻探施工实践为沧州地区深部盐矿勘探积累了经验.
하북성창현조완감사구석염자원보사항목찬탐시공중존재취심난도대、니장호벽곤난、시공성본고등문제.재수안찬공적시공중,선택경신-98-Ⅱ형쌍관찬구,경질합금괄도、복합편찬두,제찬취심적방법완성취심시공.통과림계찬시적응용、암심도새예방등조시제고료공효,채용분단니장호벽방법학보료공벽은정.해공적찬탐시공실천위창주지구심부염광감탐적루료경험.
@@@@In the halite resources survey project in Cang County of Hebei Province, the construction cost was high because it was difficult in coring and wall protection by mud.In the first borehole, Qingshen-98-Ⅱdouble tube core barrel, car-bide scraper, PDC bit and coring by drill string lifting were selected for coring operation.The construction efficiency was improved by critical drilling time and core plugging prevention;wall stability was ensured by sectional wall protection with mud.