摘要
从油田开发规律的前提出发，用Ｌｏｇｉｓｔｉｃｃｕｒｖｅ和广义递减模型，对油井压裂后的最终可采储量、阶段累积产油量及累积增油量、某一时间的日产油量及日增油量、压裂投资回收期等开发指标的预测方法进行了探讨与分析。并用某油田６口同期压裂井的实际生产数据，做了以上开发指标的实例计算，拟合结果与实际生产动态数据误差较小。计算结果表明：人工压裂不仅可以提高阶段采出程度，同时也可增加最终可采储量。
As a kind of important measure to increase and stabilize oil production, artificial fracturing has been extensively applied to many oil fields (especially to low permeability oil fields). Reservoir engineers are concerned with such problems as weather or not the recoverable reserves may be increased after fracturing, how to rationally calculate the cumulative incremental oil production and the period for recovery of investment, and how the production rate change after fracturing. Respecting the law of oilfield development, this paper studies and analyzes the prediction methods for such development indices as the final recoverable reserves, the cumulative oil production and the cumulative incremental oil rate by stage, the daily oil production and the daily incremental oil rate in some time as well as the period for recovery of investment, by means of logistic curve and generalized reduction model. These development indices are practically calculated with the actual production data of 6 wells in the same period. The precision is satisfactory with low relative errors through comparing the matched results with the actual production data. The calculated results show that artificial fracturing may increase not only the recovery percentage at a stage but also the final recoverable reserves. The method may be also applied to the effect evaluation of other well production increase measures.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
1998年第4期72-75,共4页
Petroleum Exploration and Development
关键词
油井
压裂效果分析
油层
Ultimate recoverable reserve, Oil well, Fracturing, Stimulation, Stimulation effect, Economic benefit
