Exploitationt Rule And Production Strategy In Bei Santai Oil Field

In order to fulfill our country’s need for energy sources,such as petroleum,the development of medium-low permeable sublayers plays an important role in oil production in our country.Technics,such as bringing new ideas into development technology of low permeable sublayers,improving single well outpute conomically and effectively and promoting trouble area’s profit transformation positively,are of great significance to improving development of oil resources and opening upexploration of them.This article investigates developing experence of low permeable sublayers at homeand abroad,in detail and makes a study of reservior geologic characteristic of a block in Moilfield carefully.And on the base of the above,I evaluates wettab ility and sensitivity of thereservior and analyzes damage factors of the reservior potentially;Disposes relativepermeability curve with normalization method and analyzes the characteristic of relative permeability curve;Disposes the capillary pressure curve with normalization andequalization method and analyzes the characteristic of reservior rocks;There, the characteristics of medium-low permeability reservoirs is poor reservoir property, permeability is low, pore structure is complex, the original water saturation is on the high side, reservoir start-up pressure is high, pore medium flow complicated, therefore, which decided the middle and low permeable oilfield levels below high permeability of sandstone reservoir water flooding. Oilfield development adjustment to the ideas generally first production performance material as the foundation, combined with oil field geological characteristics, reservoir property and distribution rule, with crude oil output renew for change as the center, find out each stage reserves producing status and remaining oil reserves of distribution. Secondly to reservoir properties and fluid properties as the basis of a similar nature reservoir, same series, using the same delimits the way, water injection well network analysis. Then the main stimulation measures for oilfield as fracturing, acidification, amplification pressure to carry on the summary, analyzes its poor to increase production, improve reservoir development effect producing extent and improve the, further improve and improve. Finally to ensure that with the least amount of well number, the shortest development fixed number of year, the highest cumulative oil production, the lowest cumulative water production, reasonable formation energy consumption for technical criteria; To ensure that the least investment, the lowest production cost, the largest profit for economic standards development program compiled.BST fault block is a typical and mid-low permeability reservoir, vertical fau It block reservoir containing the area is small, the elastic energy, because by mi ning, cause of formation energy reduce declines and oil production. ZhuanZhu la ter parts, but because the oil is not perfect injection-production patterns nets, inje ction-production corresponding condition is poor, Wells by water injection or one-way without corresponding layer, plane effect well adjusted, a considerable num ber of well point difficulty aqueous fast growing. And because the single well p oint multi-layer period between layers of mining, that big differences, part, low permeability potential layer injection, producing fluid situation is bad, but high in jection-production condition good reservoirs, and waterlogged serious, vertical adj ustment and potential seeking large difficulty can not effectively control oil Well s, leaving WangJi oilfield water rising water rise faster, low oilfield development effect.Therefore, in view of the present problems in oilfield development, using the above ideas choose appropriate development technology became the focus of research, this paper mainly completed the research work:1. Use BST fault block production dynamic materials and optimum materials, make clear block overall development history, development phase, the clear into the developing goal, features block stage. Analysis of reservoir overall production features, including oil, producing fluid volume change rule, aquifer change rule. Analysis and waterflooding process, including block oil production speed, mining fluid speed, recovery degree analysis, forecast, stable rate of evaluation, etc.2. The BST fault block by absorbing, liquid producing profile analysis, understand the CPR profile in small layers of oil Wells, and the shape of the layer of oil producing fluid, see the contribution of each small layer oil producing fluid is uniform. For the well profile-log analysis also can know the reservoir water, as well as the degree of uniform oil Wells and water shut off profile control reconciliation plugging provides actual increase note measures. Through the different period of profile-log and liquid producing profile analysis, can understand some of the reservoir changes. For reservoir liquid producing profile and profile-log variations on the whole oilfield development to the appropriate adjustment scheme, in order to improve the whole oil recovery.3. The production of dynamic information, analyze the characteristics of rese rvoir development, including water utilization efficiency and pressure to maintain the evaluation, and through the waterflooding characteristic curve and suitable f or water flooding the sandstone reservoir experience formula to block recovery f orecast. The adaptability of existing well network evaluation, puts forward the ex isting Wells nets have trouble with. For the center with injection Wells, analyzes oil, Wells relevance, make clear the direction, saw water Wells flood area. Use water drive and a method of cumulative yield of single recoverable reserves of single well control,analyzes remaining recoverable reserves, indirect guidance liu hua11-1understanding.4. The oil Wells on the block ZhuanZhu, dozen adjustment well, adjustment measures such as cutting, fracturing effect is analysed evaluation, alignment of stimulation measures for this block. In view of the present status of development WangLongZhuang fault block by adjusting the suction section, Wells in layers of injection-production corresponding relation, water flooding direction adjustment Wells, drilling aspects to adjust oilfield injection-production system, perfect injec tion-production corresponding relation.This paper results:After systemically research of exploitation rule in BST oilfield,the results of this paper can help the structural lithologic reservoir drawing up reasonable exploitation technical methods and policy boundary,providing the theoretical basis for improving exploitation effect of BST oilfield.