2D/3D HR Seismic Equipment

2D/3D HR seismic equipment for controlled marine acquisition.

A complete spread for high-resolution seismic recording, streamer operation, source control, field QC, processing, and interpretation support.

01 Acquisition Equipment

2D HR seismic spread

Three equipment groups support recording, source control, and seismic data workflow.

Based on the 2D HR seismic brochure, THI's marine seismic spread is arranged around recording hardware, source equipment, and processing software so acquisition, QC, and interpretation can move as one controlled workflow.

2D HR seismic acquisition operation spread — 2D HR Seismic Operation

Seal 428Recording system 1,200 mActive streamer 282.52 cfmCompressor capacity QCProcessing and interpretation

02 Equipment Directory

System grouping

Equipment organised by the way the seismic work is executed offshore.

Seismic Recording

Recording backbone for controlled 2D HR marine acquisition.

The recording spread is arranged to receive streamer data, synchronize acquisition timing, digitize auxiliary channels, and secure field data during offshore operation.

Recording System

Sercel Seal - 428

Shipboard recording and acquisition control system used as the main interface between streamer data, navigation timing, auxiliary channels, and data storage.

DXCU-428 Seismic ControllerStreamer interface with built-in high-voltage power supply, local or remote operation, deck safety connection, and GPS reference propagation.

LCI-428 Acquisition UnitInterface between navigation and Seal 428, supporting physical T0 input, auxiliary trace management, and synchronization through GPS time reference.

AXCU-428 Auxiliary Channel UnitDigitizes analog auxiliary channels for source, vessel, and acquisition support signals, with expandable channel capacity.

GPS Time ServerProvides acquisition timing so streamers, navigation, and source operation stay synchronized during continuous acquisition.

NAS StorageDedicated field storage for acquired records, QC transfer, backup handling, and data delivery preparation.

Streamer Control

Bird Controller

Streamer control equipment supports cable depth control, heading monitoring, and streamer behavior checks while the spread is towed behind the vessel.

LIU II Dual Channel Bird ControllerLine interface and control unit for streamer-mounted devices, supporting communication between the operator system and bird control lines.

Compass Bird Model 5011-2Externally mounted streamer device for adjustable depth control, depth measurement, ballast information, and compass heading data.

Streamer Spread

Streamer

The active streamer section receives reflected acoustic energy through hydrophone groups, supporting high-resolution seismic acquisition in a compact marine spread.

GEL ALS section150 m active line section per module with distributed acquisition electronics for marine streamer operation.

12.5 m group spacingHydrophone group interval used to support dense 2D HR seismic sampling along the survey line.

1,200 m active streamerActive streamer length configured from multiple 150 m sections for marine acquisition coverage.

96 channel configurationChannel setup aligned with the 1,200 m active streamer spread and 12.5 m group spacing.

Seismic Source

Source control and compressed-air support for stable signal generation.

The source system is prepared to control firing sequence, monitor near-field output, and maintain compressed-air supply for consistent seismic source operation.

Source Control

Source Controller

Control package used to trigger and monitor the seismic source during acquisition, keeping source timing aligned with recording and navigation.

HotShot Sources ControllerControls source firing command and supports repeatable source timing during marine seismic production.

Near Field HydrophoneMonitors source output close to the array for field QC and source signature review.

Compressed-Air Source

Compressors and Source Units

Compressed-air and source equipment support controlled acoustic energy generation for high-resolution marine seismic acquisition.

Denair DG-2/400 CompressorsFour compressor units at 70.63 cfm each, providing a combined capacity of 282.52 cfm.

Teledyne Bolt SourceMarine seismic source option prepared for controlled source output during acquisition.

Sercel G-SourceSeismic source unit suitable for high-resolution marine survey configuration and compact source operation.

Seismic Processing

Software workflow for QC, processing, and interpretation.

Processing support helps field records move from acquisition QC into seismic processing and interpretation deliverables for geohazard, route, and site assessment.

Field QC

QC Software

Field QC software is used to review acquired records and support quality checks before data moves further into processing.

Radex Pro Seismic SoftwareSupports seismic data review and field QC workflow.

CoverpointUsed for QC support and practical inspection of seismic acquisition coverage.

Processing

Processing Software

Processing software supports seismic data conditioning, workflow control, and preparation of high-resolution deliverables.

Radex Pro Seismic SoftwareSupports seismic processing workflow from recorded field data.

GLOBE ClaritasProcessing platform used for seismic data preparation and technical output generation.

Interpretation

Interpretation Software

Interpretation tools support subsurface review, horizon and feature interpretation, and reporting for client decision-making.

IHS Kingdom SoftwareInterpretation platform for seismic review, mapping, and subsurface interpretation.

DUG SoftwareUsed to support seismic interpretation, visualization, and technical analysis workflow.