摘要
X射线全岩衍射矿物分析录井技术在细碎岩性识别、页岩油气钻探选层以及致密油储集层评价方面起到了重要作用,但由于受多种因素制约,其应用空间有限,有待拓展。由于泥质含量是决定地层孔渗性的主要因素,而泥质含量的大小主要取决于黏土矿物含量,以JL8井区油层、差油层、水层、干层泥质含量对比分析为倒,提出利用XRD录井分析资料中黏土矿物划分渗透层的思路,并依据该思路建立了C 110区块古近系渗透层识别方法,取得了良好的应用效果;结合实例,探讨了直用XRD录井依据沉积环境下特殊矿物——黄铁矿识别储集层流体性质,根据黏土矿物含量与气测和岩石热解资料的相关性为曲线形态法解释提供辅助依据,利用标志性矿物含量与气测全烃结合进行水平井产能评估以及应用脆性和敏感性矿物及含量为压前评估提供依据的可行性。以上拓展应用分析与探讨对XRD录井深化研究与实践应用具有一定的指导意义。
Mud logging technology of X-ray diffraction whole rock mineral analysis plays an important role in a fine mineral lithology identification,layer selection during shale oil and gas drilling and evaluation of tight oil reservoirs,but due to many factors,its application space is limited,which has to be expanded.Since the shale content is the major factor in formation pore permeability' s identification,and the size of the shale content primarily depends on the clay mineral content.Taking the shale content comparative analysis from the layers of oil,poor oil,water and dry in Well Area JL 8 as an example,the author proposed to divide permeable layers by the clay mineral of XRD mud logging analysis data and established the Paleogene permeable layers identification method for Block C 110 based on the idea,which achieved good effects.With practical examples,the paper discussed the application of XRD logging based on the special mineral in sedimentary circumstances-pyrite to identify reservoir fluid properties and according to the correlation of the clay mineral content and gas logging and rock pyrolysis data,to provide ancillary basis for the interpretation of curve morphological method,to use the iconic mineral content and gas logging with total hydrocarbon to evaluate horizontal well productivity and to use fragile and sensitive mineral content to provide a reliable basis of pre-pressure evaluation.The above analysis and discussion for the expanding of the application space has some significance for the further research and practical application of XRD logging.
出处
《录井工程》
2016年第1期14-18,89,共5页
Mud Logging Engineering
关键词
XRD
矿物
渗透层
物性
产能评估
压前评估
黄铁矿
XRD
mineral
permeable layer
physical property
capacity evaluation
pre-pressure evaluation
pyrite
