On the match of various exploration engineering technologies.

China is looking for new oil and gas resources in new area with harsh surface conditions, extremely complex subsurface structures, as well as new reserves in maturing fields by progressive exploration. The selection of the exploration targets is important, at the same time, the fully development and comprehensive utilization of advanced and applicable exploration technologies are even more important. In the coming five to ten years, oil and gas exploration of PetroChina will focus on the five key types of target (lithological reservoirs with large area but low petroleum abundance, composite subtle reservoirs, composite structural reservoirs on steep slopes in foreland basins, fractured and cavernous carbonate reservoirs in stabilized area of platform basin, buried hill reservoirs in down faulted area of platform basin, and complex faulted block reservoirs in the mature oil regions). Based on different geological characteristics of these targets, the analysis of the demands for exploration engineering technologies (seismic acquisition technology, seismic processing technology, comprehensive seismic interpretation technology, well logging technology, drilling and completion technology and fracturing and acidizing technology) is conducted. The common features of oil and gas exploration targets include: concealment, complexity, delineation difficulty and poor data quality, so whence matching the exploration engineering technologies stress must be laid on their accordance, applicable effectiveness, reasonable match as well as creativeness. 6 successful examples of comprehensive utilization of exploration technologies are introduced. The progress of oil and gas exploration depends on the advancement of exploration engineering technologies. The authors hold that in the future the advancement of every single exploration engineering technology and the progress of comprehensive exploration technologies should be given more attention to.