Practical Diagnostics Using Typecurve Analysis

Typecurve analysis is useful for estimating reservoir parameters such as permeability, skin, original gas in place (OGIP) and original oil in place (OOIP). Furthermore, there is important diagnostic value in Typecurve analysis. Some practical diagnostics include:

• Identifying skin damage
• Qualifying fracture effectiveness
• Identifying transition between transient and boundary dominated flow
• Identifying liquid loading
• Identifying pressure support
• Characterizing overpressured reservoirs
• Identifying interference

Note:   See Anderson et al. (2006) for field cases.

Base Model

Material Balance Diagnostics

Productivity Diagnostics

"Bad Data" Diagnostics