CCSD logging engineering and logging interpretation

摘要

The CCSD-MH (Chinese Continental Scientific Dilling-Main Hole) is located in the east of Qinling-Dabie-SuLu foldbelt, south of SuLu area, Jiangsu province, China. CCSD logging engineering gather many modern high technologies and employs various advanced logging tools to survey the sidewall continuously. This can obtain various physical, chemic, geometrical, etc in-situ information of the borehole's profile. So well logging is one of the most important parts and pivotal technologies in the project of CCSD. The metamorphite's lithology (eclogite, serpentinite , amphibolite, orthogneiss, paragneiss, etc.) can be classified by logging curves and data, and the parameters of their physical can be acquired by analyzing the response characters of various metamorphite's lithology and by statistics. According to the logging cross plot, We can research the clustering of metamorphite's physical property. The key data of the synthetical seismic record is wave impedance. In this paper, Utilize the data of AC, DEN curves to calculate the wave impedance and compare with the VSP profile, finally analyze the reflectors of the CCSD-MH. Imaging log has a positioning system and very good vertical resolution, and can describe detailly the geological features that distribute cracks, faults, planar joints, etc in space. Various structure parameters (the size and occurrences of foliation, fracture, fault & vein) have been given by image logging.