RE:EVOLUTION IN SEISMIC SEABED SURVEYS
OFFSHORE E&P MARKET TODAY
The majority of oil and gas giant fields have already been discovered. Exploration and development of middle size fields require new technologies. Hydrocarbon production is moving further offshore to deepwater basins and difficult environments, increasing exploration and production risks and costs. Increasingly volatile oil prices make oil companies look for new smart technologies that reduce exploration costs and increase quality of results.
MARINE E&P MARKET IS CONSTANTLY LOOKING FOR COST-EFFECTIVE SOLUTIONS AND BETTER QUALITY IMAGES OF OIL AND GAS RESERVOIRS
www.geonodalsolutions.com
SEISMIC DATA ACQUISITION TECHNOLOGIES PROBLEMS
Limitation of towed streamer technology in areas with obstacles (especially in production fields), areas with intensive ship traffic and shallow water zones Limitations of seabed streamer technologies application on relatively deep water fields Possible distortion of horizontal inline and crossline geophone components in seabed streamer which results in bad vector fidelity of recorded 3C data Possible bad coupling of seabed streamer geophone component in the area with significant relief changes Significant losses in terms of costs and time due to streamer damage MARINE E&P MARKET IS CONSTANTLY LOOKING FOR COST-EFFECTIVE SOLUTIONS AND BETTER QUALITY IMAGES OF OIL-AND-GAS RESERVOIRS
www.geonodalsolutions.com
WHAT IS GNS 3D SEISMIC DATA ACQUISITION ?
3D seabed seismic data productivity – 10 sq. km per day Operational depth 0-7000 meters Effective seabed data acquisition in any geological conditions of exploration and production fields 24-hours survey working cycle Decreased survey costs due to the conventional vessels engagement
3D SEISMIC SURVEYS BY GNS DELIVER BETTER DATA WITHIN TIGHTER DEADLINES www.geonodalsolutions.com
WHAT IS GNS 3D SEISMIC DATA ACQUISITION ?
Phase 1: Deployment of a whole GNS SPNs patch by SPN service vessel
Phase 2: Shooting the project area with source vessel; SPNs are recording the data
Phase 3: Controlled pop-up of SPNs targeted line with registered data
Phase 4: Hi-speed wireless data back-up from all SPNs onboard while new Eco-anchor mounting; source vessel keeps shooting
PRODUCTION OF HIGHEST INTEGRITY 3D/4D SEISMIC WITH GREAT SPEED AND COST EFFECTIVENESS www.geonodalsolutions.com
GNS TECHNOLOGY ANSWERS E&P MARKET CHALLENGE
The future of marine seismic surveys belongs to seabed recording.GNS produces 10 sq.km of 3D/4C seabed seismic data per day. That survey speed is Ń omparable with 3D towed streamers’ one and is more productive then any existing ROV nodal or seabed streamers technologies. The costs of GNS survey services are significantly lower then the costs of the other towed streamer and seabed data acquisition technologies. The proprietary GNS technology has many technological, operational and economic advantages over conventional 3D marine surveying technique technologies. As the result client gets mostly preciseseabed data of highest integrity about the off-shore basins. 3D SEISMIC SURVEYS BY GNS DELIVER BETTER DATA WITHIN TIGHTER DEADLINES
www.geonodalsolutions.com
SELF POP-UP NODES (SPNs) – KEY GEOPHYSICAL ADVANTAGES
Majority of GNS SPN seabed data acquisition complex components are designed in-house by GNS company and tailored specifically to the requirements of the offshore E&P market and technology. The top priorities of GNS SPN equipment are: low power consumption and integrity of all components. Therefore our equipment can record seabed data during 90 days without battery pack replacement. Data gathered while seabed recording are backing up from all SPNs onboard simultaneously which significantly speed up the survey speed. GNS SPNs can be deployed and recovered from seabed multiple times without maintenance. The Eco-friendly anchor of GNS SPN dissolves into seabed environmentnatural components in one month. GNS SPN IS UNIQUE EQUIPMENT ALLOWING TO CONDUCT SEABED SURVEYING TECHNOLOGICALLY ADVANCED LIKE NO OTHERS
www.geonodalsolutions.com
OPERATIONAL ADVANTAGES OF GNS SEABED SURVEYING METHOD
〉 No depth limits, can be operated from 0 to 7000 meters water depths 〉 Good coupling in any seabed conditions with any relief 〉 GNS method is the only seismic bottom survey solution with productivity comparable to surface streamer 3D survey 〉 Survey obstructions (especially in production areas), intense ship traffic and shallow water zones is not a problem for GNS method 〉 The offset range of the data is not limited and could be chosen in accordance with local geological objections 〉 Full-azimuth illumination of the survey target gives more reliable images 〉 Fast and easy replacement of failed SPN 〉 No need for specially equipped multi streamer seismic vessel – almost any vessel can be adjusted for work with GNS SPNs 〉 Reduced costs of outboard equipment – lower survey risks 〉 Less affected by surface weather conditions, especially in Polar seas with ice conditions 〉 Mobility potential – shorter time for survey mobilization, the equipment can be promptly moved across the world between projects, decreasing the ‘downtime’ 〉 Possibility of using of the same seabed recording equipment for passive reservoir monitoring and for relatively low frequency passive noise recording for direct reservoir location
GNS 3D SEABED SURVEY IS OPERATIONALLY SMOOTH AND EFFECTIVE LIKE NO OTHER SEABED TECHNOLOGY www.geonodalsolutions.com
GNS SEABED SURVEY ADVANTAGES
Recording units have no connection with the sea surface – quiet ambient environment, no tow noise and lower source generated noise The offset range of the data is not limited and could be chosen according to the local geological task Full-azimuth illumination of the survey target – more reliable image Amplitude anisotropy maps allow to identify fracture density and orientation i.e., to optimize drilling campaigns and production strategies, field development and production phase 4 components recording on a seabed: 3C geophone and hydrophone allow receiving the image of the sub-bottom media in PP and PS waves
3D SEISMIC SURVEYS BY GNS DELIVER BETTER DATA WITHIN TIGHTER DEADLINES FOR LESS COST
www.geonodalsolutions.com
COMPARISON OF SEABED SEISMIC ACQUISITION TECHNOLOGIES
3D marine seismic technologies Towed streamers
Seabed recording
Node seabed recording
Multiazimuth
Long offset
Survey obstructions
Survey time
Survey Cost
Narrow Azimuthal
NO
Limited
NO
1
1
Rich azumuthal
YES
YES
NO
3
4
Seabed recording
YES
Limited
Limited
2-5
4-5
Deployed/recovered by ROV
YES
YES
YES
8
10
Self Pop-up Nodes GNS
YES
YES
YES
1,8
0,8
GNS SPNS ARE TECHNOLOGICALLY ADVANCED LIKE NO OTHER SEABED DATA ACQUISITION TECHNOLOGY www.geonodalsolutions.com
10
GNS CURRENT AND POTENTIAL CLIENTS
Current GNS clients:
Companies in dialogue:
GNS SOLVES SEISMIC DATA ACQUISITION TASKS FOR GLOBAL E&P MARKET www.geonodalsolutions.com
11
11-14 Grafton Street 2nd floor London W1S 4EW UK Intl. phone: +7 916 176 75 28 UK line: +44 20 7859 4299 Intl. fax: +44 20 3070 0838 E-mail: info@geonodalsolutions.com
www.geonodalsolutions.com