3D Geomechanical Modellig for an Extra Deep Fractured Carbonate Reservoir, Northwest China
- Xiuping Chen (SinoPec Northwest Branch) | Shuangui Li (SinoPec Northwest Branch) | Jun Zhang (SinoPec Northwest Branch) | Shanshan Wang (Baker Hughes) | Feng Gui (Baker Hughes) | Ahmadreza Younessi (Baker Hughes)
- Document ID
- Society of Petroleum Engineers
- SPE Asia Pacific Oil & Gas Conference and Exhibition, 17-19 November, Virtual
- Publication Date
- Document Type
- Conference Paper
- 2020. Society of Petroleum Engineers
- 1.6.6 Directional Drilling, 0.2 Wellbore Design, 5 Reservoir Desciption & Dynamics, 1.12 Drilling Measurement, Data Acquisition and Automation, 5.8 Unconventional and Complex Reservoirs, 1.6 Drilling Operations, 5.8.7 Carbonate Reservoir, 1.2.3 Rock properties, 5.1 Reservoir Characterisation, 0.2.2 Geomechanics, 5.1.5 Geologic Modeling, 5.1.7 Seismic Processing and Interpretation, 1.12.6 Drilling Data Management and Standards
- 3D Geomechanics, fractured carbonate, well planning, Drilling problem, extra deep
- 22 in the last 30 days
- 22 since 2007
- Show more detail
- View rights & permissions
|SPE Member Price:||USD 5.00|
|SPE Non-Member Price:||USD 28.00|
Development well drilling for a deep carbonate reservoir in northwest China has been challenging due to the deep depth, complex lithology, highly fractured reservoirs and various stress conditions. Although vertical wells could mostly be drilled to the over 7000 m deep target by continuous reaming, deviated well drilling turned out to be extremely challenging with frequent hole instability related issues including frequent stuck pipe, pack off and sidetracking. To help understand the different drilling behaviours in different part of the field, a pilot area was selected to construct a 3D geomechanical model to understand the lateral variations in stress and rock properties by integrating the spatial structural and lithology changes.
A 3D geomechanical model can be constructed with the well-based 1D model as foundation integrating the seismic interpreted structures, attributes and velocity volumes. Based on detailed 1D geomechanical modelling, a well-centric understanding of the three principal stresses, fluid pressure and rock mechanical properties of the formations was developed for offset wells in the field. The pore pressure distribution in 3D space was calibrated using formation test and drilling data. Rock mechanical properties and stresses were populated in 3D space using inverted seismic volumes and relationships developed in the 1D modelling, honouring the 3D static geological and structural models.
3D geomechanical modelling is an effective method to help diagnose and understand the drilling problem in the complex deep carbonate reservoir. Detailed and comprehensive seismic interoperation and inversion results are required to get a reasonable realistic understanding of the field wise drilling problem.
|File Size||713 KB||Number of Pages||8|