Ni Yudong

Converted Wave Seismic Exploration & Static Correction

More and more attentions have been paid to the applications of converted wave exploration in assessing oil and gas reservoirs. Experimental study has also been fulfilled in China for over 10 years. Due to the difficulties in acquisition, statics, data processing and interpretation, the technology has been in a slow progress. In the past few years, a series of studies have been fulfilled aiming to the technologies of converted wave acquisition, static correction and processing in Sulige Gas Field, Erdos Basin. The converted wave section processed is in a high quality; and the interpretation result correlates with the drilling result wonderfully

Application of Deconvolution of Ground Force Signal In a Vibrator Array

Multi-vibrator arrays are ordinarily used in seismic field operations to acquire strong energy. Generally, the sweep signal is cross-correlated with the vibroseis record to get the shot gather, which is in mixed-phase with the S/N ratio deteriorated by cross correlation noise. In the experiment introduced in this paper, two vibrator arrays are used to enhance the shooting energy; meanwhile deconvolution of the vibrator record using ground force signal is conducted to get data with a certain degree of high-fidelity (HF) and the cross correlation noise can thus be avoided to improve S/N ratio.