Seismic equipment

From YMG

RECORDING SYSTEMS	AIRGUNS
ВОХ radio telemetry system manufactured by «Fairfield Industries»	«Puls 6» Airguns
Marsh Line Telemetry system for exploration of transition zones
INTROMARIN-L2 Seismic acquisition and recording system	«Puls 6C» Well airgun
ССТ-480/960 Telemetric cable & modular system for seismic exploration
UPCM-120х4 Multi component digital receiver
Multi channel seismic high response Aquaseis

The seismic equipment is used by YMG for offshore exploration of hydrocarbons site surveys and helps YMG find the best solutions with optimum performance.

• in transition zones

• in offshore areas (seas, lakes, rivers and water reservoirs)

• on land

Recording equipment

Radio telemetric system «BOX»

Specifications:

Number of channels:

More than 8000 channels in real time radio-telemetry mode.

Acquisition module:

Recording module supports records of 2000 routes in real time with sample rates of 0.5 ms, 1 ms, 2 ms, 4 ms, and 8 ms. System channel counts can be increased by adding more recording modules.

Data carrier

IBM 3480, 3490, and 3590-compatible cartridges and any other SCSI-carriers.

Format

Demultiplexed formats SEGD 8024, SEGD 8048, SEGD 8058 and SEGY.

Telemetric module connection with one «mini-cable»

Telemetric module with a battery and tester

...and at survey

Marsh Line

Manufactured by SI Technology (Russia).

Digital telemetric system based on a rigid cable with built-in sensors (geophones and hydrophone receivers) and field electronics. The system is designed for work in offshore areas, in transition zones and adjacent land areas.

System Marsh Line is used for:

• Regional and detailed geological survey in shelf, shallow-water and transition zones.

• Oil and gas exploration.

• Study of the upper part of the sedimentary sequence.

• Exploration of tectonic zones.

• Exploration of gas hydrates.

• Control of hydrocarbon fields and their accumulation.

• Monitoring over hydrocarbon fields under production in real-time.

• Study of high frequency seismic noise and seismicity.

INTROMARIN-L2 Seismic acquisition and recording system

Manufactured by SI Technology (Russia).

Specifications:
Quantity of active channels	248
Used	496
Auxiliary	8
Operating system	Windows NT
Analog-digital converter	24 bits
Sampling period	0.5, 1, 2 or 4 msec
Max recording time	32 sec @ 1 msec
Pre-amplifier gain	12, 24, 36 or 48 dB
Max input signal	from 25 to 1600 mV — depending on the gain
Dynamic range	114 dB
Channel cross-talk coefficient	> 90 dB
Band	from 3 to 750 Hz
Input impedance (differential input)	20 kOhm
Input impedance (common-mode input)	100 kOhm
Physical specifications
Size	550×580×430 mm
Weight of 120-channeled modification	38 kilos
Power	130 W
Electric power supply: voltage DC	12±20% Volt or 24±20% Volt

ССТ-480/960 Telemetric cable & modular system for seismic exploration

Manufactured by YMG.

The central station based on IBM PC Pentium II-300 controls digital modules and the system, seismic data recording and acquisition.

One ССТ section 300 meters long is equipped with one or two digital telemetric modules.

Digital telemetric module (DTM) (basic) provides analogue seismic data recording, gain, analog to digital conversion and transmission to the control console.

UPCM-120х4 Multi component digital receiver

Manufactured by YMG in 2002–2004.

Application:

• Exploration for oil and gas in shelf and in transition zones.

• Monitoring of offshore oil and gas fields under production.

• Offshore geotechnical studies.

Composition:

• Shipboard part:
  • PENTIUM-IV computer
  • interface card
  • software

• Outboard part:
  • Transmitting modules
  • Armor multiple-strand cable
  • Digital 4-component modules (120 items):
    • three piezo-accelerometers
    • one hydrophone,
    • angle of pitch (rotation) sensor,
    • electronics,
    • azimuth data transmitter.

Seismic sensors and airguns

«Puls 6» Airguns

Capacity size	Wave amplitude of pressure (bar/m) (0-peak) (unfiltered)	Shot pint interval (ms)	Weight (kg)
0.3	2.0	48.0	37.0
0.7	3.1	71.0	55.0
0.8	2.1	65.0	27.0
1.5	2.5	76.0	37.0
2.1	2.7	84.0	39.0
1.5	3.7*	75*	40.0
2.5	3.8*	84*	42.0
3.5	3.7	91.0	55.0
5.1	4.9	110.0	91.0

Borehole air-operated wave transducer «Puls 6C»

Capacity of source (dm3):	0.3	1.0	2.0	2.5
Operating pressure:	5-17
Frequency range (Hz):	20-300
Diameter (mm):	60-130
Weight (kilos):	6-18

AQUASEIS Multi component seismic high resolution module

Manufactured by YMG.

Application:

• Offshore geological surveys

• Detailed study of the upper part of the section for offshore exploration of solid minerals (oil, gas, gas hydrates, gold-bearing placers, diamonds, tin).

• Site surveys.

• Monitoring of geotechnical structures.

Components:

• Air-gun source

• 48-channeled streamer

• Onboard recording station

• Specialized software

Certificate of conformity

Air gun

Streamer

Data acquisition system