DUAL DEVICE APPARATUS AND METHODS USABLE IN WELL DRILLING AND OTHER OPERATIONS

摘要

The present disclosure relates generally to devices and methods useable during well drilling operation. More particularly, the present disclosure pertains to a drilling rig incorporating a dual top drive apparatus useable for decreasing connection time of pipe segments useable during well drilling or other well operations, and methods of connecting pipe segments useable during well drilling or other operations.

主权项

1. A rig comprising:
a. a plurality of tubular rotational devices: b. a derrick assembly for supporting the plurality of tubular rotational devices, wherein each of the plurality of tubular rotational devices is slidably disposed to move the tubular rotational devices toward a single wellbore and away from the wellbore, the wellbore having a wellbore axis; and c. a plurality of lifting assemblies, wherein the plurality of lifting assemblies are operatively connected to the plurality of tubular rotational devices and a first lifting assembly is capable of moving a first tubular rotational device vertically inline with the wellbore while a second lifting assembly is capable of independently moving a second tubular rotational device vertically out of alignment with the wellbore, wherein the first tubular rotational device is capable of rotating and lifting a first tubular segment inline with the wellbore while the second tubular rotational device is lifting and rotating a second tubular segment out of alignment with the wellbore.