Glossary
| Term | Definition |
|---|---|
| Darcy | 1000 millidarcies (see definition for mD below). |
| Deposition | The process of depositing unconsolidated sediments, usually in a basin. |
| DHC | Dry hole cost. The cost of an unsuccessful well. |
| Dip | The angle that a rock surface forms with respect to the horizontal. Can be referenced as degrees, in the case of depth, or, in the case of seismic reflection data, in time (e.g. milliseconds per km ). |
| Dipmeter | A tool used in logging a well which measures the dip of rock surfaces in the borehole of the well. |
| DMO | Dip Moveout . A correction applied to seismic trace processing to account for dip. (See dip above). |
| DOGGR | California Department of Conservation/Division of Oil, Gas, and Geothermal Resources |
| Dry hole | A well in which no commercial hydrocarbons were discovered. |