| PDF: | |
| Time: | 2011 |
| Journal: | Chinese Journal of Geophysic |
| Volumn: | 54 |
| Issue: | 2 |
| Pages: | 449-456 |
| Type: | Other |
| Author: | Wuzhi Li,Pujun Wang,Gongcheng Zhang,Baoliang Lu. |
Abstract: | Seismic geological interpretation of deep-seated basement needs time-depth relation. The wells reaching basement are very few and they only reveal basement top, which causes time- depth conversion unable to reach the desired depth. This paper proposes a VSP time-depth conversion correction in the depth, it fits quadratic polynomial of time-depth conversion for VSP data of deep wells and basement-penetrating wells, deep seismic reflection, ESP and gravity and magnetic data in deep-seated strata, to be applied for seismic interpretation in deep-seated strata. The paper fits time-depth chart by dividing deep water area （〉300m） and shallow water area （〈 300m）. Finally it completes time-depth conversion of the whole area, and compiles the burial depth of basement top surface of the whole area by using kriging to interpolation of the isobath of the same base level of two areas. |