Frequently asked questions

Search by API number (full or partial), operator, lease, county or state, either across everything from the search box or within a single dataset. Add the wells you want to the cart.

No. You check out with your email address, and your download links are sent there.

PayPal or any major credit or debit card through PayPal’s secure checkout; no PayPal account is needed. We never see or store your card details. For large packages, contact us to arrange payment.

Yes. Enter it in the cart before you check out. A code applies on top of any package or control-set price.

Yes. Put every well of a data type in a county or state in your cart (the map’s county search and area tools make this one click) and the package price applies automatically. Regional, full-dataset and whole-warehouse packages are on Pricing & packages, or tell us the area you need.

Your files are available to download as soon as payment clears, on the confirmation page and in an email. Links stay valid for 30 days.

A small number of records are delivered by hand. If so, the confirmation will say so and we will email the files within one business day.

Velocity surveys: time-depth pairs as ASCII (.txt) and LAS, with the original scanned survey. Virtual and point checkshots: TXT and LAS. Directional surveys: ASCII (.txt) with depth, deviation and calculated azimuth for every station. Well curves: LAS. Raster logs: TIF. Paleontological and mud data: CSV.

Contact us with your order number or the email address you used, and we will resend it.

Every dataset has been through a rigorous review and quality check. Directional surveys are recalculated for historical convergence, and mud weights and temperatures are validated against the original log sheets.

The Rocky Mountain region, the Mid-Continent, the Gulf Coast states and the offshore Gulf of Mexico, including deepwater.

Not everything is listed online. Send us a custom request and we will check the full archive. If there is no measured survey near your location, the velocity cube gives you a checkshot at any point inside it.

No. Your purchase is a license to use the data inside your company; it does not include resale or redistribution rights. See the data license.

A regional 3D velocity model of onshore Texas and Louisiana and the Gulf of Mexico shelf, built from GCVD’s own measured checkshot surveys. Switch it on in the map and click anywhere inside it for the time-depth function at that point. More about the cube.

A measured velocity survey was recorded in the well. A virtual checkshot is the cube’s time-depth function at an existing well that has no measured survey. A point checkshot is the same, at any location you click. Virtual and point checkshots are interpretations, labelled as such in every file, with a confidence grade.

Each point gets the expected depth error measured by testing the cube against the surveys: A is 2% or better, B 2–4%, C 4–7%, D above 7%. Most of the onshore cube and the extended shelf are A or B. The original offshore block east of 91°W is graded D: its source files read about 10% off the measured surveys.

Original is the cube as GCVD built it. Infilled areas are holes inside it, filled from the nodes on every side. Extended areas lie beyond it, built from dense measured-survey control and calibrated to the original processing. The map shows each in its own colour.

For $175: the point checkshot plus the four nearest measured surveys around it, one in each direction, with the nearby virtual checkshots included free. You get the interpretation and the measured evidence behind it together.

The original onshore cube reaches 6 seconds two-way time. Extended areas reach as deep as the surveys around them, typically about 3 seconds; each point shows its own maximum time and depth before you buy.