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首页> 外国专利> METHOD OF OIL-FIELD DEVELOPMENT WITH MAINTENANCE OF OIL LEVEL PRODUCTION BY MEANS OF FORCED MODE USAGE AT CLOSING STAGE

METHOD OF OIL-FIELD DEVELOPMENT WITH MAINTENANCE OF OIL LEVEL PRODUCTION BY MEANS OF FORCED MODE USAGE AT CLOSING STAGE

机译：闭幕阶段强制模式手段维持油层生产的油田开发方法

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FIELD: oil and gas industry.;SUBSTANCE: development is performed in three stages according to the method. At the first stage, working agent is pumped with increase in several stages of time once in 4-12 months. The term is determined depending on duration of positive effect. Increase is performed by 5-30% before initial pressure, but in any way it should not exceed hydraulic fracture pressure of this formation. Bottom-hole pressure is maintained at initial level in production wells. Duration of the first stage is determined to a local extremum point of a graph of value of relative efficiency of flushing in time. Then, the second stage is started, at which pumping of working agent is performed with reduction in several stages - once in 4-12 months by 5-30%. Production wells with water content of more than 95% are shut off simultaneously. On the rest production wells there reduced is bottom-hole pressure to maintain constant pressure drop between injection and production wells. Bottom-hole pressure in production wells is reduced to gas saturation level; after that, the final stage is chosen. For this purpose injection wells are shut off, in production wells mode of actual oil level production is maintained due to increase of liquid extraction till transfer is made to forced mode of product extraction. Production wells with water content that is higher than maximum allowable level or well flow rates below economic efficiency are shut off.;EFFECT: reduction of material costs and improvement of oil extraction coefficient due to possibility of action on the whole deposit and control over extracted product.;3 dwg
机译：领域：石油和天然气工业。实质：根据该方法分三个阶段进行开发。在第一个阶段，工作剂会在4-12个月内分几个阶段逐步增加。该术语取决于积极作用的持续时间。在初始压力​​之前增加5-30％，但无论如何不应超过该地层的水力压裂压力。在生产井中，井底压力保持在初始水平。第一阶段的持续时间确定为及时冲洗的相对效率的值的图的局部极值点。然后，开始第二阶段，在该阶段中，工作剂的泵送分几个阶段进行，每4-12个月减少5-30％。同时关闭含水量超过95％的生产井。在其余的生产井上，降低了井底压力，以维持注入井和生产井之间的恒定压降。生产井中的井底压力降低到气体饱和水平;之后，选择最后阶段。为此目的，关闭注入井，在生产井中，由于增加了液体提取，因此保持了实际油位的生产方式，直到转换为强制的产品提取方式为止。含水量高于最大允许水平或井流量低于经济效率的生产井将被关闭;效果：由于可能对整个矿床产生影响并控制提取的产品，从而降低了材料成本并提高了石油提取系数。; 3 dwg

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