Multicomponent OBC (4C) Seismic Data Acquisition Challenges And Solution-Design, Operation, And Field Quality Control: Case Study OBC Bekapai

2018 ◽  
Author(s):  
Pian Nopiana
Keyword(s):  
Quality Control ◽  
Data Acquisition ◽  
Seismic Data ◽  
Control Case ◽  
Field Quality ◽  
Solution Design ◽  
Seismic Data Acquisition

Trends in onshore seismic data acquisition: a case study on cable-free nodal systems

2016 ◽  
Vol 56 (2) ◽  
pp. 601
Author(s):  
Nabeel Yassi
Keyword(s):  
Data Quality ◽  
Data Acquisition ◽  
Seismic Data ◽  
Seismic Exploration ◽  
Quality Data ◽  
Seismic Surveys ◽  
The Past ◽  
Seismic Data Acquisition ◽  
2D And 3D

The desire to conduct onshore seismic surveys without cables has been an elusive dream since the dawn of seismic exploration. Since the late 1970s, seismic surveys were conducted with cabled multi-channels acquisition systems. As the number of channels steadily grew, a fundamental restriction appeared with hundreds of kilometres of line cables dragged on the ground. Seismic surveys within rugged terrain—across rivers, steep cliffs, urban areas, and culturally and environmentally sensitive zones—were both challenging and expansive exercises. Modern technology has made different cable-free solutions practical. High-resolution analogue to digital converters are now affordable, as are GPS radios for timing and location. Microprocessors and memory are readily available for autonomous recording systems, along with a battery the size and weight of a field nodal now promising to power an acquisition unit for as long as required for normal seismic crew operations. Many successful 2D and 3D seismic data acquisition using cable-free autonomous nodal systems were attempted in the past few years; however, there remain a number of concerns with these systems. The first concern queries whether the units are working according to manufacturer specifications during the data acquisition window. The second is the limited or no real-time data quality control that inspires sceptics to use the term blind acquisition to nodal operations. The third is the traditional question of geophone array versus point receiver acquisition. Although a string of the geophone can be connected to autonomous nodes, the preference is to deploy a single or internal geophone with the nodes to maintain the proposed flexibility of cable-free recording systems. This case study elaborates on the benefits of the cable-free seismic surveys, with specific examples of 2D and 3D exploration programs conducted in Australia in the past few years. Optimisation of field crew size, field crew resources, cost implications, and footprint to the environment, wildlife and domestic livestock will be discussed. In addition, the study focuses on the data quality/data assurance and the processes implanted during data acquisition to maintain equivalent industry standards to cable recording. Emphases will also include data analysis and test results of the geophone array versus the cable-free point receiver recording.

Influence of seismic data acquisition on AVOZ inversion: A case study in Ha7 area

2013 ◽  
Author(s):  
Dongxiao Yin ◽  
Sam Zandong Sun ◽  
Pei Yang ◽  
Lingli Peng ◽  
Haijun Yang
Keyword(s):  
Data Acquisition ◽  
Seismic Data ◽  
Seismic Data Acquisition

Seismic data acquisition

1988 ◽  
Author(s):  
Carl H. Savit
Keyword(s):  
Data Acquisition ◽  
Seismic Data ◽  
Seismic Data Acquisition

Simultaneous pseudo-random shuffle-sweep generation and increased seismic data acquisition productivity

2017 ◽  
Author(s):  
Alexander Zhukov ◽  
Ilya Korotkov ◽  
Evgeny Sidenko ◽  
Igor Nekrasov ◽  
Pavel Gridin ◽  
...  
Keyword(s):  
Data Acquisition ◽  
Seismic Data ◽  
Seismic Data Acquisition

scholarly journals Development of a new seismic-data acquisition station based on system-on-a-programmable-chip technology

2013 ◽  
Vol 56 (3) ◽  
Author(s):  
Zhang Qi-sheng ◽  
Deng Ming ◽  
Guo Jian ◽  
Luo Wei-bing ◽  
Wang Qi ◽  
...  
Keyword(s):  
Power Consumption ◽  
Data Acquisition ◽  
Digital Filter ◽  
Data Transmission ◽  
Seismic Data ◽  
Low Noise ◽  
High Definition ◽  
Control Data ◽  
Seismic Data Acquisition ◽  
Transmission Speed

<p>There has been considerable development of seismic detectors over the last 80 years. However, there is still a need to further develop new earthquake exploration and data acquisition systems with high precision. In particular, for China to keep up with the latest technology of these systems, it is important to be involved in the research and development, instead of importing systems that soon fall behind the latest technology. In this study, the features of system-on-a-programmable-chip (SoPC) technology are analyzed and used to design a new digital seismic-data acquisition station. The hardware circuit of the station was developed, and the analog board and the main control data-transmission board were designed according to the needs of digital seismic-data acquisition stations. High-definition analog-to-digital converter sequential digital filter technology of the station (cascade integrator comb filter, finite impulse response digital filter) were incorporated to provide advantages to the acquisition station, such as high definition, large dynamic scope, and low noise. A specific data-transmission protocol was designed for the station, which ensured a transmission speed of 16 Mbps along a 55-m wire with low power consumption. Synchronic acquisition was researched and developed, so as to achieve accuracy better than 200 ns. The key technologies were integrated into the SoPC of the main control data-transmission board, so as to ensure high-resolution acquisition of the station, while improving the accuracy of the synchronic acquisition and data-transmission speed, lowering the power consumption, and preparing for the follow-up efforts to tape out.</p>

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