Abstract—The recognition of depositional environments from well logs is based on the principle that well log responses are related to changes in thickness, texture, grain size and lithology along the well path. The variations in sedimentary rock response are due to reservoir heterogeneity. A similar set of log responses that characterizes a specific rock type and allows it to be distinguished from others, have defined an electrofacies.Cluster analysis includes a broad suite of techniques designed to find groups of similar items within a data set. Partitioning methods divide the data set into a number of groups predesignated by the user. Hierarchical cluster methods produce a hierarchy of clusters from small clusters of very similar items to large clusters that include more dissimilar items. Hierarchical methods usually produce a graphical output known as a dendrogram or tree that shows this hierarchical clustering structure.The method has tested on a 398.5 m thick interval of Carbonate deposits in a vertical well from Amara field, located in southeast Iraq. Modal data have collected from both core and cutting samples. Cluster analysis and electrofacies classification have performed using advance interpretation in Interactive Petrophysics software version 3.6.Carbonate microfacies and marine depositional environments studied for Mishrif Formation depended on the available thin sections though they were not enough to cover all the depositional environments of Mishrif Formation. Therefore, previous studies and well logs were also depended in this study.Correlation of determined logfacies with those defined from cores and cuttings is fundamental to check the reliability of used methods and to define a meaningful cut off level for wells from which no cores or cuttings are available.
Keywords—Cluster analysis, Mishrif Formation, Logfacies, Well Logs response.
Click here to Download Full Paper
AD Publications is a rapidly growing academic publisher in the fields of Engineering, Medical-Health, Environmental Science and Agriculture Research. AD Publications is a registered organization broad-based open access and publishes most exciting researches with respect to the subjects of our journals. The Journals is being indexed and abstracted by all major global current awareness and alerting services.
The organization aims at undertaking, co- coordinating and promoting research and development. It provides professional and academic guidance in the field of basic education, Higher Education as well in the Technical Education. Our Aims is to Promote and support, High Quality basic, Scientific Research and development in fields of Engineering, Medical-Health, Environmental Science and Agriculture Research and to Generate Public awareness, provide advice to scholar’s researchers and communicate research outcomes.
Some Important Links About Research Journal
International Journal
Agriculture Journal
Medical Journal
Environmental Journal
Engineering Journal