EAGE GeoTech 2021
1-4 March 2021 | Online Event
Workshop Course
Introduction to Geosteering
Tuesday 2 March 2021 (9:00 - 16:00)
Convened by Dr. Vlad Karen Payrazyan (Rogii) and Kirill Ronzhin (Rogii)
*This course is included in the conference registration fee.
Course Description
This course will give a comprehensive introduction to all aspects of geosteering: pre-job, real-time well placement and post analysis. Participants will learn how to integrate various datasets from different disciplines such as drilling, geophysics, petrophysics and geology in order to execute a successful well placement job. Attendees will get to know multiple data types, including but not limited to MWD and LWD logs, image logs, mudlogs, seismic and structural surfaces and how to analyze it.
Different geosteering methods will be discussed highlighting pros and cons of every technique. Means of communication between different parties involved in well construction process will be reviewed. The role of latest advancements in IT technologies such as cloud-based solutions, automation and data analytics will be discussed. Best practices of well placement in different fields worldwide will be demonstrated and reviewed.
Participants' Profile
This course is suitable for anyone interested in horizontal well placement and geosteering. Previous experience in directional drilling, geology and well placement is beneficial but not mandatory.
Registration Details
Attendance to this course is included in the workshop registration fee.
Course content
- Horizontal drilling: dominating the market
- Geosteering objectives and applications
- Geological uncertainties during well planning / well placement
- Directional drilling fundamentals
- Geosteering Methods
- Model based geosteering (using synthetic logs along the lateral)
- Case studies
- Strat-based geosteering and its advantages
- Case studies
- Chemostratigraphy and biostratigraphy
- Case studies
- Geosteering with azimuthal image logs
- Determining formation dip. How to incorporate it in well placement?
- Azimuthal images: comparison
- Case studies
- Resistivity forward modelling and Inversion
- Advantages, limitations
- Horn-effect, shoulder effect, mud invasion, anisotropy
- Case studies
- Data integration to increase geosteering efficiency
- Seismic data
- 3D geological models and structural surfaces
- Multi-well and multi-log geosteering
- Modelling complex geology (thickness variations, pinch outs, truncation, lateral property changes)
- Case studies
- Target line and well planning. Trajectory adjustments.
- Drilling corridor. Drilling window
- Spatial coordinates and direction – both are important
- DLS constraints: how to account for it. Geologist – drilling engineer interaction
- Using geosteering interpretations in mapping and updating structural surfaces
- Modern IT Technologies – bringing the well placement process to the new level
- Assisted geosteering using AI algorithms
- Decision making time. Communication process
- Cloud-based solutions for collaborative multiuser access
- Real-time data transfer (WITSML) and monitoring panel (RTM)
- GeoTarget Widget. Bridging the gap between disciplines (Geology and Drilling)
- Data Analytics and Automation. Python. How to leverage the data to enhance operational workflows
Instructors
Course instructors are leading experts in geosteering. It is also planned to organise hands-on demos and see how the technology works in practice.