The application of measurement-while-drilling (MWD) survey corrections is a critical step to ensure that the required service level is met and that definitive surveys are accurate, secure, and delivered in real time. Over the complex life of a directional survey, it is critical that these corrections are applied in the correct sequence and that the final survey is delivered to the directional driller within a time frame that avoids delays for critical decisions.

Past methods of supplying survey corrections to the wellsite vary greatly in terms of both methodology and speed. Techniques that are commonly deployed include file transfer, email, and online file sharing. Although there are benefits of using these methods, each falls short in one or more areas; these areas can include speed, security, or accuracy. Because of the need for one or more specialists to analyze the data, large amounts of data are often imported and exported. This process is not only laborious, but can also introduce opportunities for error.

To overcome these challenges associated with supplying the survey corrections to the wellsite, a new survey correction platform and associated workflows were developed. The new platform takes advantage of modern advances in software development and infrastructure along with the lessons learned from previous generations of software. The use of the new survey correction platform and application enables a database-to-database solution that streamlines multiple areas of survey handling. These areas include the application of in-field referencing (IFR1), interpolated in-field referencing (IFR2), multi-station analysis (MSA), and MWD survey quality control. The most significant improvement, however, is the removal of manual survey entry and extraction from the survey processing database and field MWD database.

This paper outlines advancements made at multiple steps in the lifespan of a directional survey to increase the speed, reliability, and accuracy associated with supplying survey corrections to the wellsite. It also describes the applications of this process in a real-time environment.

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