Study On Integrated Adjustment In Xingou Oil Fields

Any reservoir to go through the cut rise, production decline, the remaining oil scattered necessary stage, so bound to the reservoir to develop appropriate development of technology policy. Take the necessary measures for development and adjustment to reverse the production decline and to reduce or slow down the moisture content the rate of increase, it is necessary to first make a reasonable assessment of the early stage of development strategy of the reservoir, to ascertain the development process and development status of the reservoir, to identify the development process of ambivalence, to find out the distribution of remaining oil, lay the foundation for the later development of policy adjustments in order to facilitate more efficient development of reservoirs.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 and reservoir hydraulics, 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, card water plugging, 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.XinGou oil fields are low-permeability reservoirs, and oil well fracturing are mostly put into operation, subject to the restrictions of the past fracturing technology, small-scale fracturing transformation, coupled with the oil wells on the vertical reservoir thickness is small, the differences between layers, andand more pressure for co-commingled, making the principal compressive open single layer, contribute to serious situation of uneven, non-main layer reserves the use of the degree of poor. XinGou oil fields in the past a set of strata development, oil wells, basic commingled together Note by the difference between layers and sand body distribution, less developed part of the sand body well network, with the continuous extension of the development history, oil wells, underground the technical condition is gradually deteriorate, leading to the basic injection patterns imperfections have become increasingly prominent effects of oilfield development year by year variation.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 XinGou oil fields 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 production of dynamic information, analyze the characteristics of reservoir development, including water utilization efficiency and pressure to maintain the evaluation, yield and moisture content variationand, through the waterflooding characteristic curve and suitable for water flooding the sandstone reservoir experience formula to block recovery forecast. Use water injection wells and analysis of oil wells correlation clarify well the direction of indirect guidance of the understanding of the distribution of remaining oil.3. Combined with faults, sedimentary microfacies, heterogeneity static parameters, such as from residual tectonic high position and is not perfect injection-production patterns formed remaining net, water flooded channel between both sides and well stranded is forming in the region of remaining oil distribution of remaining oil, layers of remaining oil distribution law, inner law to analysis aspects of remaining oil; Combined dynamic material, analysis time and see water Wells, analyzes a residual characteristic; Combing reservoir geological characteristics, dynamic analysis and numerical simulation software by fitting the ECLIPSE the block and single well develop dynamic, quantitative analysis and oil reservoir reserves of remaining oil distribution characteristics of abundance; Through the above method cognizant of remaining oil distribution patterns of and characteristics and the influence factors of reservoir development potential analysis and evaluation.4.On the current development of the development, and to analyze the need for comprehensive adjustment. Instability injection test analysis of the current flood development. For the status quo, to demonstrate reasonable well. Also reasonable injection ratio to determine a reasonable formation pressure, single well the economic limit of production, reserves control study.5. 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 XinGou oil fields by Wells in layers of injection-production corresponding relation, water flooding direction adjustment Wells, drilling aspects to adjust oilfield injection-production system, perfect injection-production corresponding relation.This paper results:through the dynamic and static data analysis oilfield waterflooding effect, combining ECLIPSE numerical simulation software quantitative analysis, combined with the distribution of remaining oil actual situation, well theory well nets adjustment method, the optimization of high water cut oilfield development adjustment to keep oil field late high and stable and effective and reasonable development has the important practical significance.