Strictly: Drilling and oil-field services Message Board

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Gold/Mining/Energy : Strictly: Drilling and oil-field services

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To: marc chatman who wrote (22861)	5/26/1998 11:32:00 PM
From: Ken Robbins	Read Replies (1) of 95453

The ratings and capacities of drilling equipment on a rig is mostly a function of the depth rating of the rig. The rigs for deeper wells have higher ratings on the derrick, drawworks, mud pumps, and higher capacity for mud tanks, cement storage, etc. Although I am not too familiar with the equipment, I understand some, if not all of the harsh environment rigs have mechanical drill pipe handling systems. I believe some even handle quadruple stands of drillpipe(4- 30ft. joints) instead of the traditional trebles (3-30 ft. joints). The hulls/legs/superstructures etc. of rigs drilling in deeper water are larger and the harsh environment ones require special steels. (Remember the Titanic sunk because it's plates and rivets were made brittle by the cold water.) Companies such as RON should definitely be benefiting from the equipment of deep water, especially where subsea production systems are employed with floating production vessels instead of fixed platforms. These subsea production systems are much more costly than wellheads on a fixed platform. See: camerondiv.com Could someone else answer 2.?

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