Logging Program Consulting
Successful geothermal projects require good planning. This includes topics such as site selection, drilling operations planning and the design of surface installations.
The logging programme for the wells must be planned in advance to ensure sufficient data is collected for well completion and for the efficient, effective and safe operation of the geothermal facility.
The applied logging program varies from site to site depending on the geological environment, well design, operational modes, requirements or restrictions.
At NiMBUC Geoscience, we design suitable logging programmes for our clients. Existing data, such as seismic or logging results or production data from adjacent wells, is taken into account. The goal is clear: to gain sufficient understanding of the subsurface, i.e. the reservoir, the flow of the water and the cap rock, and to obtain data for reservoir modelling and testing.
It is vital to consider economic and operational factors to keep the budget down and minimise downtime at the rig. You must exchange ideas with other service providers and planners. This is the only way to match the logging programme with other operations, such as mudlogging or coring.
We start by asking our clients a series of questions to understand their specific project:
- How many wells are planned? Any sidetracks?
- What does the well path look like? What is the desired inclination?
- Is geosteering necessary?
- What is the well diameter?
- How many sections are planned?
- Will cores be cut or sidewall plugs be taken?
- Are there troubling formations expected? What are the requirements or preferences for the mud system?
- Any special logging requirements by authorities?
We present options to the client and discuss the pros and cons of each. We go through the well and fix the program individually for each section. It is vital to consider a number of questions in this regard:
- Does the seismic survey needs to be refined with well data?
- What logs are demanded by the petrophysicists for rock typing?
- Are geomechanics planned? What log data are needed here?
- Are Borehole Images needed - for fracture determination, facies and depositional environment, present-day stress data?
- Will the log data be used for modelling, at which scale? Is a DFN planned?
- What test will be undertaken?
- Are there quick-look analyses needed for well stimulation?
We use questions like these to formulate comprehensive logging program recommendations.