Drilling Fluid Technology for Shunbei 1-7H Ultra-deep Horizontal Well
Shunbei 1-7 H well was located at the north edge of Shuntuogole low uplift.The designed depth was 7726.51m,and it was a four-spud ultra-deep development horizontal well.The geological structure of the well was complex,and the drilling process passes through multiple sets of strata,and the drilling fluid technology about wellbore stability was difficult in the construction.According to different well sections and different formation lithology,different drilling fluid systems and corresponding drilling fluid maintenance and treatment processes were adopted to ensure the smooth progress of the construction,the stability of the well wall during the course of drilling,the good quality of the well bore,and the excellent and fast drilling effect.
Shunbei 1-7H welllong open holewellbore stabilitystrong inhibitionstrong plugging
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