Independent MWD survey correction
Send us the raw MWD sensor data from any contractor. We correct for reference-field error, sensor error and BHA sag, and send back a definitive survey, with every correction logged. Same tools, same contractor. Better answer.
| At TD · 2σ | Lateral | Vertical |
|---|---|---|
| Baselineuncorrected · MWD+HRGM | 182.0 m | 45.3 m |
| All three combinedIFR1 + MSA + sag | 86.7 m | 26.3 m |
| Change | −52% | −42% |
| At TD · 2σ | Lateral | Vertical |
|---|---|---|
| Baselineuncorrected · MWD+HRGM | 182.0 m | 45.3 m |
| All three combinedIFR1 + MSA + sag | 86.7 m | 26.3 m |
| Change | −52% | −42% |
ISCWSA #1Extended reach: 8,000 m MD, horizontal for the last 2.6 km.
Collision margin
Anti-collision rules run on separation factor: the distance between two wells divided by the size of their ellipses. Shrink the ellipses and the same wells sit further inside your rules, with more margin before a shut-in. Tighter pad spacing becomes possible too, but whether you use it is your decision.
Thin target
Over a 1,000 m lateral, 0.1° of inclination error is 1.7 m of TVD. In a thin target, that's the difference between pay and shale.
BHA sag can be an error of that size, and it sits on every station in the lateral.
Station QC
We check every station against its acceptance band and log what each correction changed, in metres. You can see at a glance which stations hold up and which ones to treat with care.
Send raw sensor data through our Survey API or by email. We correct it and send the surveys back by the same route, or push them into any system that takes a data feed.
TALLENTECH
Median 2 s, survey received to corrected station. Runs 24/7.
We push corrected surveys straight into any third-party system that takes a data feed. Nobody retypes a number. The Survey API and email carry the same corrected survey and its QC.
Most clients start with survey correction. The other two run on its output.
| Service | You send | You get | Why it's better |
|---|---|---|---|
S-01Survey correction and QCSurvey correction | You sendRaw MWD sensor data (Gx Gy Gz Bx By Bz) from any contractor, with the well location and survey dates. | You getA corrected survey with every station checked against its acceptance band. | Why it's betterAn uncorrected MWD survey carries reference-field and sensor errors. We correct both at every station, and QC flags gross errors, so you know which stations to trust. |
S-02Position uncertainty and anti-collisionUncertainty & anti-collision | You sendYour survey program, the corrections you ran, and the offset wells. | You getEllipses built from the program you actually ran, plus separation factors against every offset you provide. | Why it's betterAn independent second set of eyes. We check the positional uncertainty and anti-collision your MWD engineers and directional driller are working to, and flag anything outside what you expect. |
S-03DataSyncDataSync | You sendNothing new. DataSync runs on the surveys you already send us for correction. | You getCorrected surveys go straight into any system that takes a data feed. You can also pull them from the Survey API or take them by email. | Why it's betterYour corrected survey shouldn't live in a PDF. It belongs in the system the directional driller is already watching. |
We don't drill the well, run the MWD or provide directional services, so a correction never depends on whose rig or tool it was.
Tell us about the well and we reply within 24 hours. Then send the raw sensor data and we review it.
We'll sign your NDA before you send anything if you need one.
Keep running Compass. Its scan is only as good as the error model behind each survey. We build the uncertainty from the survey program you actually ran, corrections included, and send you the ellipses and separation factors to check against your own scan.
No. Your contractor runs the tools and sends surveys as usual. We correct what comes out of them, and we don't provide MWD or directional services ourselves.
Through our Survey API or by email. Corrected surveys go back the same way, or into any system that takes a data feed.
It depends on the project. Tell us about it and we'll quote.
Once surveys are flowing, the median from survey received to corrected station is 2 seconds, measured over 90 days of production. When you first get in touch, we reply within 24 hours.
Tell us about one well. We reply within 24 hours, and once the raw sensor data arrives we review it and tell you what we find.