Application status

In recent years, with the improvement of people's understanding, the increase of exploration difficulty, the progress of technical level and the development of equipment, multi-wave seismic exploration has been paid more and more attention, and its technical research and practical application have also made great progress. Anisotropy Project Team (EAP) of British Geological Survey (BGS) uses multi-component seismic data to study formation anisotropy, and makes in-depth research on multi-component seismic exploration technology in theory and practical application. Large oil companies and geophysical exploration service companies at home and abroad have done a lot of work in multi-component seismic exploration on land (table 1. 1. 1). Representative companies include ION company, CGGVeritas company, WesternGeco company, Sinopec, PetroChina, CNOOC and so on. At present, foreign multi-component seismic exploration has made great progress in lithology prediction, structural imaging improvement, reservoir monitoring and fracture detection. Major oil fields, scientific research institutes and universities in China have carried out technical research and practice of multi-component seismic exploration, and achieved certain results, such as experiments and industrial production in Sichuan, Daqing, Shengli and Ordos.

Table 1. 1. 1 global statistics on the implementation of three-dimensional and three-component (3D3C) seismic exploration

(According to the data of American ION Company on February 23rd, 2009, 65438+)

265438+At the beginning of the 20th century, geophysical service companies such as ION of the United States and CGG of France successfully developed the digital three-component detector of MEMS, which replaced the traditional analog detector, greatly improved the signal fidelity, component isolation, component consistency, signal-to-noise ratio and resolution of onshore multi-wave seismic data, and greatly reduced the cost of onshore multi-wave exploration. Academician Liu Guangding of Chinese Academy of Sciences and researcher Yang Changchun presided over the development of a digital three-component acquisition system, and made important progress.

In 2003, China Petroleum obtained the first 3D 3-component (3D3C) seismic data of China in Changqing Sulige gas field by using the Systemⅳⅳ instrument of ION Company and the VectorseisTM digital 3-component detector. In 2004, Southwest Oil&Gas Company of China Petrochemical Company used the system Ⅳ Ⅳ instrument of ion Company and the VectorseisTM digital three-component detector to conduct the largest three-dimensional three-component (3D3C) seismic exploration in the world at that time. In 2005, China Petrochemical carried out 3D 3-component (3D3C) seismic exploration in Ken71area by using French CGGSercelDSU3 in Shengli Oilfield. Subsequently, PetroChina Southwest Oil and Gas Field Company, Sinopec Northwest Company, PetroChina Liaohe Oilfield, Sinopec Zhongyuan Oilfield, Sinopec Exploration South Company and PetroChina Daqing Oilfield successively carried out 3D3C or 2D3C seismic exploration tests. From 2008 to 20 1 1 year, Southwest Oil&Gas Company of China Petrochemical Company carried out 3D3C seismic exploration in Hexingchang-Gaomiaozi, Xiaoquan, Deyang South, Gu Feng and other areas in Sichuan Basin, which promoted the industrial application of multi-wave and multi-component seismic exploration technology to become more and more mature.