Surface expression definition
Surface expression means a flow, movement, or release from the subsurface to the surface of fluid or other material such as oil, water, steam, gas, formation solids, formation debris, material, or any combination thereof, that is outside of a wellbore and that appears to be caused by injection operations.
Surface expression means a flow of fluid or material, movement, or release from the subsurface to the surface of oil, water, steam, gas, drilling mud, formation solids, formation debris, material, geothermal anomaly, or any combination thereof. Examples of surface expressions include, but are not limited to, fluid seepage, fissures, vents, fumaroles, hot springs, geysers, steaming ground, subsidence, ground fractures, craters, bubbling mud, uplift, landslides, thermal anomalies, or thermal infra-red hot- spots.