Assertion: hydrocarbon | /r/ObjectUse | used as the displacement fluids
Facets:
Source sentences:
text: In the case where hydrocarbons derived from petroleum are used as the displacement fluids in the process of that application with natural gas as the final displacement material fingering likewise may break the continuity of the front between the natural gas and the immediately preceding displacement fluid with movement of the gas toward the petroleum front, and this is disadvantageous even though break-through into the petroleum does not occur.