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Digital Global Positioning System (DGPS)

Satellite DGPS systems C-Nav and Veripos are used to carry out receiver and shooting equipment positioning.

DGPS C-NAV2050R receivers are used in the mode of RTG corrections. RTG is a navigation service providing a decimeter accuracy positioning worldwide.

DGPS Veripos LD2-G2 receivers are used in Ultra mode. Veripos Ultra is a new generation navigation service providing a decimeter accuracy positioning worldwide. It is based on PPP (Precise Point Positioning) technology, according to which any GPS errors can be both independently corrected or precisely patterned.

DGPS receiver Trimble SPS461 is used for source group center positioning within decametric accuracy, its antennas are located at each source line.

DGPS Trimble SPS351, DSM232, AgGPS132 receivers are used in the base station correction receive mode, providing sub-meter accuracy.

During 3D multi-vessel survey integral navigational system Trigger Fish is used providing on-line control and management of all vessels involved.

Software

NaviPac EIVA, NaviEdit EIVA, TriggerFish , GeoMetis BX and HydroPro v 2.31 programs are used as software for streamer and OBC surveys.

While the bottom cable is being spread, its positioning is done via module sensor receiver. Sonardyne TZ / OBC 12 underwater acoustic positioning system is applied to accurately position the exact location of the bottom cable receiving sensors.

Streamer positioning is done both through compass birds Digicourse 5010, 5011 and the tail buoy equipped with GPS receiver.

 Depth Measuring Equipment

We generally apply dual frequency two-beam Simrad EA400 (38/200 kHz) and single-frequency ODOM Hydrotrac (200 kHz) echo sounders. The Simrad EA400 accuracy of depth taking at 200 kHz is equal to 1 cm 0,1% , whereas at 38 kHz  it is 5 cm 0,1%. The Hydrotrac accuracy is 1 cm 0,1% . All the vessels are equipped with Furuno FCV 620 (50/200 kHz) dual frequency single-beam echo sounders. Valeport 740 is used as tidal gauge with 0.1% of accuracy. The sound speed is measured by Valeport Mini SVP profilometer. It enables to measure the sound speed in the range of 1375-1900 m / s with an accuracy of 0.02 m / sec.

Sonar survey equipment

High-resolution side-scan sonar EdgeTech 4125-P (400/900 KHZ)is usedto get information of the bottom surface topography and structure.

 

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