12 When 20” casing depth is attained, displace hole volume with high viscosity mud.
12 When 20” casing depth is attained, displace hole volume with high viscosity mud.
钻达20英寸套管深度时，用高粘度泥浆替满井眼。
12 When 20” casing depth is attained, displace hole volume with high viscosity mud.
钻达20英寸套管深度时，用高粘度泥浆替满井眼。