Downhole gas compressor

Details Downhole gas compressor Downhole gas compressor

2005-07-07

2008-07-22

Wright, Giovanna C (Department: 3672)

Wells

Processes

Producing the well

C166S369000, C166S250070

Reexamination Certificate

active

07401655

ABSTRACT:
A method for producing gas from a well with low pressure involves running a bottom hole pressure test to graph a P-Q curve. The operator computes a frictional pressure drop due to friction of the gas flowing through the production tubing to the surface. A packer is set above perforations in the well. A screw pump is selected that has a capacity equal to the sum of the frictional pressure drop plus a desired wellhead pressure. The screw pump has a flow rate capacity determined from the P-Q curve. The operator may vary the frequency of a downhole motor to achieve the desired wellhead pressure.

REFERENCES:
patent: 4623305 (1986-11-01), Segerstrom
patent: 4928771 (1990-05-01), Vandevier
patent: 5605193 (1997-02-01), Bearden et al.
patent: 5755288 (1998-05-01), Bearden et al.
patent: 6123149 (2000-09-01), McKinzie et al.
patent: 6413065 (2002-07-01), Dass
patent: 6601652 (2003-08-01), Grant
patent: 7172020 (2007-02-01), Tseytlin
Brochure of CAN-K PME, Artificial Lift Systems Inc. [Canada],Artificial Lift Solution: Surface Transfer Twin Screw Multiphase Pumps, www.can-k.com, date unknown.

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