System and method for low-pressure well completion

Details System and method for low-pressure well completion System and method for low-pressure well completion

2007-11-20

2007-11-20

Bagnell, David (Department: 3672)

Wells

Processes

Assembling well part

C166S089300, C166S085400, C166S088100, C166S089100, C166S075130

Reexamination Certificate

active

11701810

ABSTRACT:
A low-pressure wellhead system with tubular heads and mandrels secured independently using threaded unions. A casing mandrel is secured to a wellhead by a first threaded union. Likewise, a tubing head spool is secured to the casing mandrel using a threaded union. A tubing hanger is also secured to the tubing head spool using a threaded union. An adapter flange may also be secured to the tubing hanger by a threaded union. Because this low-pressure wellhead is faster and easier to assemble and provides full bore access, there is less rig downtime, thus rendering the well completion process faster and more economical.

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