GEOPHYSICS

geophysical and geohazard surveys MANAGEMENT: planning, hsse compliance, contractor selection, operations supervision, data and interpretation QC

GPCI ’s project management system assures industry standard and HSSE compliant data acquisition campaigns tailored to the specific G&G tasks as well as project execution in time and budget.
Our expert knowledge allows :

  • Optimized survey design and description of minimum technical requirements
  • Compilation of the “Scope of Work” including HSSE requirements (IAGC, IOGP, etc.), drafts for remuneration schemes and draft contracts reflecting client’s interests
  • Tender and service provider evaluation
  • Support to client for final contract negotiation
  • Support to client for field operations management including EIA compliance, permitting work safety supervision and QC
  • Data processing management and QC

Our practical expertise covers 2D and 3D seismic acquisition :

  • Land (jungle and mountain environment)
  • Marine streamer and OBS
  • Transition zone environments

Well seismic surveys :

  • Design of check shot surveys, vertical seismic profiling (VSP), including walk-away, walk-above and walk-around VSP
  • Optimized scope of work reflecting the real minimum requirements of the client
  • Tender process and contracting
  • Field operations QC and monitoring to minimize survey and rig standby costs
  • Processing follow-up and advise on data integration

geophysical and geohazard surveys MANAGEMENT: planning, hsse compliance, contractor selection, operations supervision, data and interpretation QC

Marine geo-hazard surveys including site (platform, rig) or route (pipeline, cable) surveys :

  • Sea-bed surveys including bythymetry, side scan sonar or multibeam echo sounder, sub-bottom profiler, magnetometer and seabed sampling and shallow CPT
  • Geotechnical borings and CPT for leg penetration analysis of platform and rigs
  • Shallow gas hazard surveys based on high resolution 2D or 3D seismic
  • Desktop studies and compilation of existing relevant data to refine client’s and its contractor’s requirements
  • Survey design, optimized scope of work
  • Tender process and contracting support
  • Field operations QC and monitoring to minimize standby costs
  • Processing and interpretation follow-up including data logistics
    and QC
  • Industry standard compliance (IOGP , DNVGL , SNAME)
  • Third party expertize if required

Permanent or temporary installation at seabed requires a hazard evaluation for :

  • Seabed clearance
  • Foundation stability
  • Dredging hazards
  • Near seabed channels or debris flows
  • Pockmarks

Offshore drilling requires in addition hazard evaluations for :

  • Gas hydrates
  • Shallow gas hazards
  • Freshwater influx

Decommissioning of offshore installations may require hazard evaluations for :

  • Description of the before and after status
  • Support for safe removal operations

seismic processing management

Our experts have extensive experience in managing of seismic processing projects with most of the international processing providers.

We are offering :

  • Planning of target specific processing workflows and provision of detailed scope of work considering cost efficiency
  • Tender support and contractor selection
  • Technical QC on all stages of the processing and regular data quality reviews with progress reporting to the client

reFLeCtion anD DiFFraCtion imaging /proCeSSing

GPCI is continuously extending its seismic data processing expertise and related computing infrastructure.

  • De-migration of existing seismic volumes and re-migration to depth domain using velocity models.
    This off ers an advanced t/z conversion workflow and a probabilistic approach to analysing variability of structural dips of target horizons related to different migration velocities.
  • Refining velocity analysis using Kirchhoff depth migration clearly improves target imaging with direct impact on geo-velocity model building and pore-pressure prediction for well planning.

geophysical surveys: planning, contractor selection, operations supervision and data qc

Land, OBS, Marine seismic surveys

  • Survey design
  • Tender, and service provider evaluation
  • Contract negotiation
  • Field operation follow-up

Well survey

  • VSP design
  • Tender, and service provider evaluation
  • Contract negotiation
  • Field operation follow-up

Site surveys (prior drilling operation offshore)

  • Debris survey (Data acquisition)
  • Bathymetry
  • Side Scan Sonar
  • Magnetometry
  • Sub Bottom Profiler
  • Shallow gas hazard assessment
  • 2D/3D High Resolution seismic survey design
  • Tender, and service provider evaluation
  • Contract negotiation
  • Field operation follow-up