China Petroleum Exploration ›› 2021, Vol. 26 ›› Issue (2): 55-68.DOI: 10.3969/j.issn.1672-7703.2021.02.006

Previous Articles     Next Articles

Advantages and application of single point receiving in seismic acquisition

Zhao Bangliu1, Dong Shitai2, Zeng Zhong1, Liang Qi1   

  1. 1 PetroChina Exploration & Production Company; 2 PetroChina Research Institute of Petroleum Exploration & Development
  • Online:2021-03-15 Published:2021-03-15

Abstract: Seismic geophones are sensors collecting earth vibration signals. It is one of the key instruments for oil and gas seismic
exploration, which directly relates to the quality of seismic data. Due to the limitations of equipment manufacturing technology
and surface conditions, geophysists have been using multi-geophone arrays both in analog and digital seismic acquisition to
achieve high signal-to-noise ratio and continuous seismic events in structural exploration. However, as the oil and gas exploration
targets are shifted from structural to subtle targets such as stratigraphic-lithologic traps, carbonate rocks and tight oil and gas reservoirs,the fidelity and resolution of seismic data have become the research hotspots, in which selecting the appropriate geophone is an important link. Single point seismic acquisition technology has attracted much attention owing to its advantages in fidelity improvement, high resolution and imaging accuracy. However, this technology has not been widely applied due to the low signal-to-noise ratio and weak energy of raw data. Since 2010, PetroChina has carried out a series of pilot tests in plain, valley, desert,mountains and loess tableland using high sensitivity broadband single point geophone and improved coupling quality of geophones.In doing so, energy of single shot reaches the same level as that of traditional geophone array receiving, and the single
point receiving data record much more information, which shows obvious advantages in data processing, such as static correction,
resolution and imaging precision improvement. In addition, it evidently reduces labor intensity in the field. As a result, the single-
point geophone acquisition technology should be vigorously generalized as a key technology of high-resolution exploration.

CLC Number: