Wyoming Administrative Code
Agency 053 - Workforce Services, Department of
Sub-Agency 0011 - OSHA - Oil & Gas Well Drilling
Chapter 9 - HYDROGEN SULFIDE (H[2]S) GAS
Section 9-1 - Area Definitions

Universal Citation: WY Code of Rules 9-1

Current through September 21, 2024

(a) No hazard area - any well which will not penetrate a known H2S horizon.

(b) Low hazard area - any well which will penetrate a formation containing H2S with a known .35 psi/ft B.H. pressure gradient or less and/or in which the H2S zone-has been effectively sealed off by casing/ cementing and/or cementing method.

(c) Medium hazard area - any well which will penetrate a formation containing H2S not defined in subsections a. and b. of this section.

(d) High hazard area - any operation expected to bring free H2S gas to the surface; i.e., DST, production testing, etc.

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