Cold Water Injectivity / Water Mobility Test

BGES’ tests are ideal for optimizing production or troubleshooting bottlenecks.

For oilsands thermal simulation models, the bitumen-bearing formation’s water permeability is a valuable piece of information. The cold water injectivity test is an effective technique for obtaining in-situ permeability data beyond the near-wellbore region. The test involves injecting cold formation-compatible water into the oilsands payzone at very low constant-rates. Following the injection, the well is shut-in to allow for a natural pressure decline.

This type of tests can help obtain a reliable description of the reservoir water permeability, the initial reservoir pressure and the reservoir’s heterogeneities (layering, fractures, etc.) When multiple wells and/or multiple test intervals are used, a series of test can be designed to detect vertical and/or horizontal communication.

Steady and low-rate injection of test fluid is critical to the success of this type of tests. It is achieved using our unique, low-rate DCS-controlled injection units. To ensure the accuracy and quality of data obtained, multiple points of high-precision measurements are taken at the wellhead and downhole with backups.

Our deliverable includes a comprehensive report with detailed analyses.

Applications

BGES’ cold water injectivity tests are ideal for optimizing production or troubleshooting production bottlenecks. They can assist in i) the identification of water mobility issues in a project site in order to optimize the effectiveness of the steam chamber, and ii) the design of a thermal in-situ operation (e.g. determining the placement of injector/producer laterals).

Features & Benefits

Test program is customizable depending on the application. Field execution is handled by specially-trained technicians and managed by an experienced Professional Engineer. Real-time radial flow confirmation and data quality control is available before concluding a test to ensure useful data is obtained. 24-hr crews can be arranged for extended injection/falloff.

Operations

Steady and low-rate injection of test fluid is achieved using our unique, low-rate DCS-controlled injection units. Test data can be viewed in real-time through the internet as it is acquired in the field. For low-permeability formations, BGES is equipped with downhole shut-in mechanisms that can prevent the adverse impact of the water column inside the wellbore on the late-time data quality.

Integration of Services

From wellsite core collection, geotechnical lab testing, cased-hole logging, reservoir and caprock injection testing, data analyses, project management, regulatory reporting, to computer simulation and numerical modelling, our comprehensive and customizable service model offers maximum flexibility for our clients.

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