For Oil Sands & Heavy Oil Enhanced Recovery
What is GeoContainment™ ?
GeoContainment is critical to the success and safety of enhanced oil recovery schemes such as Steam Assisted Gravity Drainage (SAGD), Cyclic Steam Stimulation (CSS), waterflood and solvent-based enhance oil recovery processes. Such processes involve the injection of steam or other fluids into the reservoir at high pressure (and potentially high temperature) in order to mobilize the heavy oil/bitumen. Rock layers directly above these types of reservoirs, known as the caprock, is a non-permeable formation acting as a seal. In order to control the mobility of steam, bitumen, waste or formation fluid, the caprock must display sufficient hydraulic and mechanical integrity to withstand injection pressures in an in-situ production. Evaluation of the underburden seal is also important in some applications to ensure complete GeoContainment. In recent years the number of caprock failures in the oil sands has made subsurface GeoContainment critical for public safety and environmental protection.
Please refer to the Caprock Integrity Study page for an example of how BGES can help.
Integration of Services
Core Recovery and Management
Diligent caprock core handling and management is crucial to ensure quality results that accurately reflect caprock properties in the reservoir. Reliable data begins with capturing the caprock core in a manner that preserves original rock properties. BGES provides end-to-end caprock core solutions, beginning with specialized handlers and a mobile facility managed by an experience technical professional at the wellsite. After careful cutting and preserving on location, the caprock core is transported, using a specially-designed and environmentally-controlled trailer, to our geotechnical lab in Calgary for further processing.
Geotechnical Laboratory with High-Temp Triaxial Analysis
Triaxial tests generate essential inputs for caprock modelling and are therefore necessary to determine caprock integrity in thermal operations. BGES specializes in testing caprock core for steam-assisted gravity drainage (SAGD) and cyclic steam stimulation (CSS) applications. The company has developed proprietary processes for acquiring, storing, transporting and testing caprock samples, and is home to one of the few high-temp full core triaxial testing apparatus in Calgary. Our deliverable includes a detailed analysis on lab results completed by highly-qualified technical professionals.
Mini-Frac / DFIT
BGES’ analysis approach provides consistent interpretation using a combination of diagnostic tools to give the most dependable results. A comprehensive analysis and interpretation of results is conducted by experienced technical professionals.
Step Rate Test (SRT)
BGES utilizes a test simulator along with a multi-stage method to carefully design the injection schedule. We are experienced in designing and successfully executing SRT’s to satisfy regulatory requirements.
Water Mobility Test
Surface & Downhole Data Acquisition
Hydrogeology Study / Analysis
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. For each set of tests, BGES provides a detailed analysis on data collected with a geomechanical review by an industry expert.