Well data and velocity data is often imperative in depth conversion. When it comes to converting depth, well data values are among one of the hardest measures which can be used – while they’re not entirely without error, they’re possessive of rather low uncertainty values and are generally considered a solid choice for matters of depth conversion software of all types. Saying that, well velocities do have a downside. Velocity data can be sparse, clustered, and limited, in comparison to other means.
Furthermore, well data values do tend to have even more of a downside. Well data values have been known for quite a while to represent anomalous locations, such as structural highs. That, as well as the more wells available are really for the better, even if varying check shots and integrated sonic logs do mean that a geologist or geoscientist working on the depth conversion process will be mixing different types of time-depth curves.
Essentially, the effort put into velocity data directly decreases uncertainty, but gathering differing types of data to construct a better model can often be arduous work. Velit, a depth conversion software for Petrel assists in the task by allowing you to use a variety of differing methods in order to get a good range of data for your eventual model.
Transferring data to and from Petrel is also made much easier by usage of Velit DE – with the interface allowing you to rather easily transfer data by simply dragging and dropping into each respective program. You can quite easily free up the Petrel license while you are using Velit, and drag and drop the data (after you have completed your velocity model) right back into petrel, with absolutely none of the risk (or productivity-killing waits) normally associated with doing such.
For more information on Velit depth conversion software for Petrel and IHS Kingdom, visit Equipoise Software’s website.