Drilling Construction Technology for Qiangzi Well-14 in Qiangtang Basin

Abstract:

Shallow drilled Qiangzi well-14 is a geological parameter well with designed depth of 1200m, the whole coring was required. There were difficulties of coring in broken formation, drilling in karst formation and construction in winter and what’s more, the high altitude unmanned environment also brought difficultie to the construction logistics supply. By taking special coring tools, cement grouting plugging, heating suction pipe with winding resistance wire as well as targeted construction management measures, the above difficulties have been effectively solved.