ex23-3 -- Converted by SECPublisher 2.1.1.6, created by BCL Technologies Inc., for SEC Filing

EX-23.3 7 ex23-3.htm ex23-3 -- Converted by SECPublisher 2.1.1.6, created by BCL Technologies Inc., for SEC Filing

Exhibit 23.3

[LETTERHEAD OF NETHERLAND, SEWELL & ASSOCIATES, INC.]

CONSENT OF INDEPENDENT PETROLEUM ENGINEERS AND GEOLOGISTS

As independent petroleum engineers, we hereby consent to the incorporation by reference of our Firm's name and our Firm's audit of the proved oil and gas reserve quantities as of December 31, 2004, as included in Southwestern Energy Company’s Form 10-K for the year ended December 31, 2004, into this Registration Statement on Form S-3.

	NETHERLAND, SEWELL & ASSOCIATES, INC.

	By	/s/ Danny D. Simmons

		Danny D. Simmons
		Executive Vice President

Houston, Texas
July 25, 2005