ABSTRACT
At present, block A has entered the ultra-high water cut development period, the distribution of remaining oil is highly scattered, only locally enriched, and it is difficult to tap the potential. In the past, when deploying infill well pattern near the fault, in order to avoid losing the target layer, the design well location is as far away from the fault as possible, resulting in low well pattern density near the fault and imperfect injection and production, which is the main remaining oil enrichment area. Since the three-dimensional seismic work in area A, the structural characteristics have been re recognized by comprehensively using logging and seismic data. The number, shape and local structural pattern of faults have changed, and the degree of fault recognition has been further improved, which provides an important basis for tapping the remaining oil near the fault. To this end, since 2019, relying on well seismic and fine fault interpretation results, six large displacement directional wells have been deployed near the fault in block A, which has achieved good development results and broadened the technical path of tapping the potential of oil fields in the later stage of ultra-high water cut.
