Evaluation And Well Deployment Decision On Hard-to-produced Reserves Of Dujiatai Forma-tion In Lei39Well Block

Lei39well block is located in the Chenjiawan depression of western Liaohe Oilfield inand around the area, west to Gao601Well, east to Lei77Well, south to Lei40Well, north toGao40well, Its area is about70km2. The proved area of Dujiatai formation in Lei39wellblock is7.8km2, OOIP is663×104t.At present the block has15exploration wells, including test13wells and15layers.Because the oil layer of Lei39well block has plenty mud, the cementing materials aredominated by carbonate minerals, and physical property is poor, the production effect hasbeen not ideal, the block is always in the unexploited state, and has became the oil fieldproven not rise development difficult to reserve. This paper maks a comprehensive geologicalstudy on the Dujiatai formation in Lei39well block. On the basis of3-D fine seismicinterpretation, reservoir inversion research and well test and production test data analysis, weresearch the reservoir's Structure, sedimentary reservoir lithology and plane, verticaldistribution rule of features, search for favorable trap, and recount the reserve. Using oldwell's datas, carry on comprehensive evaluation and well deployment decision, determine thedevelopment horizon, optimize drill and exploitation mode, in order to realize the effectiveuse of Dujiatai formation, and to provide the new matter base to pledge the Gao sheng oilfield Stabilizing oil and increasing output.