One of the most significant advancements to reduce costs for drilling multiple horizontal wells from a single surface location or pad is the “walking” rig. A walking rig is self-propelled because it can move short distances (10 metres) without being disassembled and with pipe in the derrick.
[pdf] One of the most significant advancements to reduce costs for drilling multiple horizontal wells from a single surface location or pad is the “walking” rig. A walking rig is self-propelled because it can move short distances (10 metres) without being disassembled and with pipe in the derrick.
[pdf] Before starting casing, the drilling supervisor should hold a pre-job safety meeting and confirm the following with the crew: 1. Remove unnecessary tools. 2. Good Housekeeping before the job 3. Rig up Casing handling equipment: Using appropriate hand. .
A circulation sub, fitting the casing thread, equipped with a WECO connection, shall be readily available on the rig floor at all times during casing running.
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