Subsurface Back Allocation

Estimate full-field, layer-by-layer allocations within hours

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Estimate oil and water production per layer over time

Estimate allocation of injection to connected producers per layer

Estimate recovery factor and remaining reserves per layer

Identify candidates for workover, re-completion and in-fill drilling

Understand injection conformance and sweep efficiency

Subsurface Back Allocation provides precise, continuous dynamic fluid allocation per layer

Uses well known physical models and state-of-the-art machine learning techniques

Very fast and independent of interpretation bias, full field allocations can be done in hours

Can run locally or on Tachyus Cloud, with no infrastructure footprint

Data can be exported easily to other visualization and analysis tools

Tachyus’ Subsurface Back Allocation is the equivalent of running tracers and flowmeters in every well during the whole history of the field.

How it works

Reservoir and production engineers value accurate, timely data on layer-level production and injection. In practice however, production is usually measured only at the well level due to difficulty, expense, and production disruption of running flowmeters, and layer-level injection allocation is currently measured using expensive tracers or other inaccurate and time consuming processes. Injection rates, production rates, and connectivity are dynamic and need to be estimated continuously, otherwise leading to out-of-date analysis and results.

Using state-of-the-art machine learning and data assimilation approaches with well-known physical models, Tachyus’ Subsurface Back Allocation continuously calculates layer-level production rates and dynamic injection allocations that match all measured historical injection and production data. The workflow runs very fast and can be powered by the cloud or local computing. Tachyus’ Subsurface Back Allocation is the equivalent of running tracers and flowmeters in every well during the whole history of the field.

Resources

Introduction

Watch an introduction to the Subsurface Back Allocation App