基于水驱油实验的饱和烃录井水淹层评价方法
Water-Flooded Zone Evaluation Method of Saturated Hydrocarbon Logging Based on Oil-Water Displacement Experiment
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- 引用格式:
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宋延杰,侯琳,何旭,沈晓燕,胡慧婷.基于水驱油实验的饱和烃录井水淹层评价方法[J].天然气与石油,2016,34(5):0.doi:
Song Yanjie, Hou Lin, He Xu, Shen Xiaoyan, Hu Huiting.Water-Flooded Zone Evaluation Method of Saturated Hydrocarbon Logging Based on Oil-Water Displacement Experiment[J].Natural Gas and Oil,2016,34(5):0.doi:
- DOI:
- 作者:
- 宋延杰1,2 侯 琳1,2 何 旭3 沈晓燕3 胡慧婷1
Song Yanjie, Hou Lin, He Xu, Shen Xiaoyan, Hu Huiting
- 作者单位:
- 1.东北石油大学地球科学学院，2.非常规油气成藏与开发省部共建国家重点实验室培育基地， 3.中石化江苏油田分公司采油一厂
1.College of Geo-science, Northeast Petroleum University;2.Accumulation and Development of Unconventional Oil and Gas, State Key Laboratory Cultivation Base Jointly- Constructed by Heilongjiang Province and the Ministry of Science and Technology; 3.The First Production Plant of Jiangsu Oilfield of SINOPEC
- 关键词:
- 饱和烃；水驱油岩心实验；水淹层；敏感参数；图版
Saturated hydrocarbon; Oil-water displacement experiment; Water flooded zone; Sensitive parameters; Chart
- 摘要:
- 饱和烃录井取得的饱和烃参数资料不受地层水矿化度的影响,受储层非均质性的影响较小,可较为直观、准确地判断油层水淹程度。江苏油田G区块经多年注水开发,已进入高含水阶段,水淹层评价已成为当务之急。通过对采用该区块天然岩心制备的28块不同产水率岩心样品饱和烃录井水驱油岩心实验取得的饱和烃参数分析知:随产水率的升高,饱和烃图谱峰型整体损失由正态分布逐渐变为平头峰；饱和烃总面积参数As呈下降趋势,CPr+Ph、CPr/CnC17参数呈上升趋势,且规律明显。在此基础上,优选出CPr/CnC17、CPr+Ph和总面积作为该区块水淹敏感参数,利用试油及已投产井井壁取心分析资料,建立了CPr/CnC17-总面积和CPr+Ph-总面积水淹层定性识别图版。经实际井验证,图版判定结果与试油结果相符。
Since the parameters obtained from saturated hydrocarbon mud logging technology are not affected by formation water salinity and reservoir heterogeneity, it can be more intuitive and accurate in determining watered-out degree of oil zones. G area in Jiangsu oilfield has stepped into a high water cut stage under years of water flood development, so the evaluation of water flooded zones has become more and more important. Based on the analysis of saturated hydrocarbon parameters of 28 core samples of different water production rate obtained from oil-water displacement experiment, the analysis shows that saturated hydrocarbon peak shapes change from normal to flat, and saturated hydrocarbon total area As decreases, and the parameters of CPr+Ph and CPr /Cnc17 increase with the increase of water production rate. Based on the experimental analysis, the parameters of CPr+Ph , CPr /Cnc17 and saturated hydrocarbon total area are selected as the sensitive parameters of water-flooded zones in G area. Then, sidewall cores of oil testing wells and brought-in wells are used to build qualitative identification charts of water flooded zones with the plot of CPr /Cnc17 versus total area and the plot of CPr+Ph versus total area. The identification charts are applied to actual well data, and the identification results are consistent with the test results.
