Mining Technology Research Of Utilization Difficulty Reserves In Niu 18 Fault Block Area

Niu 18 pieces of a location in territory of liaozhong county in liaoning province.Flat, convenient transportation. Structure in the eastern depression in northern cattle-tsing lung in fractured anticlinal structure belt, west for Mr. Yu tuo high barrier belt,east to yingkou- fort tong two big fault, south into the tsing lung machine structure,northern plunging syncline in long beach, ns extension.Niuju seismic work began in 1965. Oil field in the first well 1 Wells, drilling in June 1971, see the oil and gas shows, in September the same year in shahejie formation sand for a test, perforated interval 2937.6 to 3072.6 m, 11 layer of 79.8 m,industrial oil flow, 6 mm nozzle, nissan oil 5.69 m3 / d, to uncover the cow in the field of exploration, in the course of the next exploration, have implemented some exploratory well, 18 cattle well in 7, 1980, in the same year in dongying group, for a period of shahejie formation sand and sand 2 test obtained high yield industrial flows[2]. By the end of August 2013, 18 blocks in the drilling of 101 cattle, 67 production well, now well open mouth, 20 nissan oil 28 t/d, composite water cut 90.1%,cumulative oil production 121.27 x 104 t, recovery degree 24.26% [4]- [5].By geological data research in oil field, the division and correlation reservoir,combined with stratigraphic correlation, 3 d seismic and actual production data, the fine structure and the structure and reservoir modeling calculation research,combining previous research results, to recalculate the Niu 18 pieces of reservoir sandstone groups each place. Provide the basis for later development and deployment location, at the same time to complete the reservoir engineering analysis, water drive recovery factor, water utilization, including condition, the condition of water cut,injection-production well spacing to improve conditions.