New Roman">Impact Analysis of Geophone Array Factors on Seismic Data Quality
详细信息
- 责任者：Wei Jidong (Geophysical Corporation ; Shengli Oil Administration Bureau ; SINOPEC ; Dongying 257100. China) ; Ding Wei
- 刊名：Geophysical Prospecting for Petroleum
- 出版年：2010
- 卷期：49(3)
- 关键词：组合检波器法 ; multiple geophone
- 页码：p.312-318
- 图表：illus., 1 table, 18 refs.
- 分类号：1600
- issnNo：ISSN1000-1441
- isbnNo：CN32-1284/TE
摘要
Geophone array is one of the most important measurements to attenuate noise in field acquisition. The factors determining array attenuating noise includes array elements, geologic conditions as well as the type and intensity of noise. Starting from verifying the impact of different factors on seismic data, by computing direction characteristics curve of array and field testing, the impact was quantitatively analyzed, and an array scheme was proposed. According to the scheme, the array should be designed as: array length in Inline direction is about a geophone group interval, and in Crossline direction is about a maximum apparent wavelength. With this array, the regular wave from all directions would be effectively attenuated. Computation results show that shortening geophone spacing and increasing geophones are beneficial to improving the S/N of data if array length is fixed. However, when the number of geophones increases to a critical value, continuously shortening geophone spacing and increasing geophone amount cannot effectively improve the noise attenuation ability of array. Application shows that at the area with complex surface conditions, serious layer absorption effect and serous secondary interference, the allowed elevation difference within array should be properly increased, which is beneficial to improve the S/N of seismic data.