Before any workover, the well must first be . Since workovers are long planned in advance, there would be much time to plan the and so the reverse circulation would be common. The intense nature of this operation often requires no less than the capabilities of a . The workover begins by killing the well then removing the wellhead and possibly the flow line, then installing a B.O.P. commonly known as a , then lifting the fr.
[pdf] The drawworks reels in and reels out the drilling line. The drilling line is connected to the traveling block and hook which connect to the drill string. The drill string runs over the crown block and setup like a block and tackle pulley system.
[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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