STRATASHALE shale/source rock fracture design workflow

Our STRATASHALE workflow analyzes reservoir characteristics to help clients optimize their shale and source rock completions to achieve the very best production possible.

By understanding the physical properties of the formation, we can design treatments capitalizing on these properties to optimize production. Through analysis and understanding of the type of shale, we can optimize fracture spacing.

Key features

  • Provides a roadmap to identify shale/source rock properties and initiate completion plans
  • Enables the completion engineer to focus on critical steps that improve completion efficiency and reduce costs
  • Offers methods that can be tendered for lower costs from service providers
  • Establishes benchmarks for shale types that are price-sensitive

Our design and evaluation work has led to paradigm shifts in completion design, economic and production performance in the Barnett, Bakken and Haynesville shale plays.

Shale characterization

As all shale reservoirs are not alike, our STRATASHALE workflow develops an understanding of the reservoir rock characteristics to develop shale specific completions.  Rock data is gathered to help identify brittleness and ductility properties as well as degrees of anisotropy.

Shales are matched to completion themes based on the following categorizations:

Type 1 shales

These respond well to fluid injection. As a result, the operator can optimize stimulation by pumping more water into the reservoir and reducing the volume of proppants while achieving the same production benefits.

Type 2 shales

Here, the ratio of free water to proppant-laden fluids is critical, requiring strong expertise in proppant design and placement. The operator has to spend significantly more money and time to analyze these shales and allocate more budget for proppant.

Type 3 shales

Production optimization depends on the quality of any fracture network generated during pad injection. Typically, a high level of matrix permeability is required for these shales to respond. However, proppant placement must be considered in designing stimulation treatments because of pressure-dependent leakoff.  

By using our STRATASHALE workflow to recognize these key rock mechanical properties, our clients have lowered their costs and improved production from the start to finish of their shale asset development.

Shale attributes

Evaluation and reporting

We offer real-time fracture modeling, post-treatment fracture modeling and fracture performance evaluation using mini-frac data to provide our clients with results to maximize their economic returns.

 

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