| Inner Mongolia region has strong 1 blocks constructed in seven children SAG of zhangwu basin on the Northeast. After years of exploration, Northern Minister North Anticline belt SAG has made great achievements by the " find oil under SAG " idea of exploration, start doing research work in the southern region again, changing the work methods which focus on looking for high positions in the structural circle, find favorable sedimentary facies belt deeply in SAG. After careful analysis reveals that: seven children SAG dark mudstones Sands development have the capacity to source, and good reservoir conditions, the strong participation of the SAG structure 1 block East to deploy strong-1 well, receive industrial oil streams in lower section of shahai formation. Therefore, pull back prelude Fully a new round of exploration and research the in the zhangqiang southern region of Inner Mongolia region to.Through on the analysis of seismic, drilling, well log, and core drill, and laboratory data of strong 1 block, make a integrated evaluation includeing constructed features, deposition features, and storage layer features, and oil and gas water distribution features and the reservoir type, and fluid nature, and seepage physical features, the system of pressure and temperature, the test oil analysis of integrated geological features, descripe geological body detailedly, understand mining characteristics, complie develop programme, determines development principles, the way of development, wells network, distance, injection way, the pressure system injection and the reasonable pressure level indicators. Achieved the following results and understanding:1. acknowledge reservoir characteristics. the thickness and the reservoir distribution of single wells changes fast in Research region in space,In horizontal direction, the reservoir distribution has much different in North-South broken block of strong 1 blocks, North block(strong 5 block) base on II oil group mainly, ⅰ oil group base on sand body exhibition and rerum natura control, limited distribution; South block(strong 1-4 block) ⅰ, and II oil group are more developed; In vertical direction, reservoir distributed mainly in sand group coal bed within upper and lower 200 m rangement, reservoir segment concentrated relatively. Influenced by sand body and rerum natura, which belongs to the tectonic-lithologic reservoirs.2. reservoir engineering and design. Combined with comprehensive reservoir geological features analysis research, oil production test in this region, determine development indicators such as the development principles, approach,, well spacing,distance,reasonable injection-production pressure system, stress levels.3. research on the reservoir characteristics. combined with Coring and laboratory data, make a research on reservoir minerals Petrology, sedimentary characteristics, reservoir characteristics of pore structure, physical properties, make a comprehensive evaluation of reservoir characteristics in shahai formation.4. well design. based on Reservoir geologic characteristics and reservoir engineering design, identified area of oil rich, determine reasonable injection-production well spacing,achieving overall, efficient and rational development.5. the development index forecast. analysis the early oil production test data, consider the capacity difference of plane, determines the individual well initial production and the rate of decline, predict accurately development indexes.Through the integrated reservoir geological characteristics and oil production test, Note test analysis and meticulous depiction of geological bodies recognized mining properties and preparation of development programmes and achieve the goal of efficient and rational development. Their research ideas and methods have a great significance that similar to the rest of the reservoir. |
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