Rigs_and_VesselsUS drillers add oil and gas rigs for second week in a rowCanada drillers drop 22 from last week to 141 rigsPumped up: the rise in oil prices - including West Texas Intermediate crude - has seen renewed activity in the US shale sector after a particularly dire 2020 due to the impacts of the coronavirus pandemic.Photo: RYTIS DAUKANTAS/UPSTREAMReuters