利用气测资料判断调整井油层水淹程度的尝试

An attempt to identify water-out degree of oil reservoirs in adjustment wells by using gas logging data

在利用气测资料研究调整井油层水淹状况过程中,为了消除钻井因素对气测数据的影响,提高气测数据的可对比性,提出了利用判别因子(烃类组分值和气全量值的比值)来判断调整井油层水淹程度;结合渤海SZ油区的实际资料,建立了判别渤海海域油田油层水淹程度的气测标准。应用结果表明,利用本文方法能够较准确地判断油层水淹情况,可为注水开发油田快速编制调整井射孔方案提供可靠依据。

In order to remove the impacts of drilling factors on gas logging data and improve the comparability of gas logging data when using gas logging data to identify water-out degree of oil reservoirs in adjustment wells,it is proposed that a factor（a ratio of hydrocarbon component value to total gas value） is used to identify water-out degree of oil reservoirs in adjustment wells.Furthermore,in combination with the actual data of SZ oil area in Bohai sea,a standard of gas logging to identify water-out degree of oil reservoirs is established for Bohai oilfields.The application results have shown that the water-out degree of oil reservoirs can be more accurately identified by this method,providing reliable evidences for quickly designing perforation programs in adjustment wells during water flooding development of an oilfield.