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CMP TRANSITION ZONE OPERATIONS

2D bottom-cable operations

To acquire data in extremely shallow water areas, SeaRay-100 or XZone Marsh Line recording systems are used. These systems enable to obtain the signal which is similar in both offshore and onshore environment due to the displacement transducers (geophones and accelerometers). Streamers are manually deployed on land, using off-road vehicles.

According to this technology, specially developed sources are used.

To generate elastic waves in transition zone our engineers designed a special air-gun (analogous to downhole source) which is a vertical cluster of sources (as shown in the picture) mounted to the drill rod and supplied with a screw auger at the bottom. Compressed air and drilling liquid supply as well as sources running are controlled via special line/canal in the drill rod.

3-4m subsea source depth (the length of one drill rod) is optimal for 120-150 frequency range. The source is mounted on the off-road vehicle chassis, as depicted in the picture, which allows to easily move around the most unapproachable areas of the land and transition zones. The air-gun is currently being tested and improved.

This energy source and recording system will make it possible to tie-in both offshore and land-based acquisition geometry.

navigation
 

Streamer technology

OBC technology
CMP transition zone operations
Prospecting, QC, data acquisition and recording
Companys data library
Navigation Equipment

Relevant information
 
  1. The change of the owner was in June 5th, 2015.Geo Energy Group LLC being one of the major geological and geophysical holdings in Kazakhstan became 100% owner and the main partner of GGS-Khazar.In this regard the company was rebranded. For the present moment the full name of the company is a limited liability company Global Geophysical Services Khazar, abbreviated company name - in Russian and GGS-Khazar LLC in English. Please see the changes in Logo
  2. GGS-Khazar LLC is a legal successor of PGS-Khazar LLC and is liable for its debts and agreements. The previous resources as fleet, equipment, and personnel are kept the same. The vessels, hull and geophysical equipment have undergone regular preventive maintenance during out-of-season 2015-2016. The vessels have ship class survey with RMRS, amendments are made in ship documentation with regard to free navigation up to the spring 2017. The company is exploring its participation in different tenders from HRS and acoustic surveys to 3D4C acquisition.

The Company opportunities can be extended by attracting if necessary the parent company resources including onshore and offshore facilities.

GGS-Khazar LLC © 2016