S-GPR
Customer: SIRTI
Start date: 2008
End date: Currently ongoing
Contact: Paolo Mazzucchelli
Aresys collaborates with Sirti -the italian leading company in engineering- for urban subsoil analysis with innovative modalities. S-GPR is a project created for the planning and the development of a subsoil mapping system (for dephts within a meter)based on Ground Penetrating Radar. Essentially, this proposed system is based around a specific configuration of processing where a GPR head, which is built on an ad hoc platform, is able to acquire data within a bidimensional space (along and across line). The activities are the following:
- definition of the requirements and the development of S-GPR system;
- acquisition of validation data through the natural GPR processor;
- development of prototypical software for S-GPR data;
- support to the prototype S-GPR validation;
- development of graphic interface;
- definition of georeferential data format;
- support to the system validation;
Extended Acoustic Radar (EAR)
Customer: Solgeo for Saipem
Start date: 2007
End date: 2008
Contact: Giancarlo Bernasconi,Diego Rovetta
Acoustic waves can be used to detect obstacles or anomalies in pipelines.Aresys tasks in the project are:
- study and model acoustic wave propagation in pipelines;
- collaborate in the construction of the acoustic radar;
- develop radar location procedures.
VSP 3D
Customer: ENI
Start date: 2008
End date: Currently ongoing
Contact: Paolo Mazzucchelli
VSP 3D is a data processing application currently in the development for use with seismic datarecorded within Vertical Seismic Profile (VSP) type surveys. During data acquisition, several geophonesare positioned along the well while the sources are positioned along the surface. Because of its peculiar acquisition geometry, the VSP data requires a processing flow which is differentto the one based on the seismic surface. According to these factors, the software has the main aim to allow complete VSP, 2D and 3D data processing from field raw data to final depth imaging step: the computation of a migrated section (VSP 2D) or a migrated volume (VSP 3D). Eni together with Aresys have been involved in this project. The main role of ENI is in the definitionof the graphic interface with the user, while Aresys will contribute to the definition, development andimplementation of the VSP processing data core, with a particular focus on the specific tools used for thisseismic data processing typology.
3D SRME
Customer: ENI (in collaboration with Politecnico di Milano)
Start date: 2005
End date: Currently ongoing
Contact: Paolo Mazzucchelli
Marine seismic data are contaminated by multiple reflections that can hide reflections at target level. 3D surface-related multiple elimination (SRME) is an attractive solution for predicting multiples in complex geological settings. However, since typical 3D marine acquisition geometries are very sparsely sampled, the application of the SRME method to 3D datasets cannot be employed without introducing severe aliasing effects when stacking in the cross-line direction. A new practical approach to perform 3D SRME has been developed, by using ray-paths modeling to analyze the 3D multiple characteristics and DRPs (downward reflection points). The knowledge of DRP locations allows to:
- determine the optimal trade-off between 2D and 3D SRME processing;
- optimize the cost of 3D SRME;
- achieve also a better control of aliasing in cross-line direction.
3D SRME is currently licensed to ENI as a stand alone tool for marine data analysis, multiple estimation and subtraction.
Flexural Ice Wave Removal
Customer: ENI
Start date: 2007
End date: Currently ongoing
Contact: Paolo Mazzucchelli
In the context of an increasing world demand for oil and gas, the untapped reserves of the arctic are becoming nowadays of great interest. However, specific processing sequences must be implemented to address problems related to seismic acquisition in this environment. In particular the most relevant of these is the Flexural Ice Wave (FIW) noise: a new approach has been developed in order to address it. Aresys task in the project is to:
- characterize and model flexural ice wave (Lamb guided wave);
- study and develop a novel approach to estimate and remove flexural ice wave noise.