The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Drilling causes variation of the rock properties in the vicinity of a wellbore. In this article, we use the radial cylindrical layered model to examine monopole logging response with a two-dimensional axisymmetric finite difference method. Three variables are set, that is, the transition zone thickness, the source frequency and source-receiver spacing, respectively. We also use the slowness-time correlation-method...
Analogous to optical interferometry, scientists have developed seismic interferometry(SI) method, and its application in the field data have promoted the understanding and study of seismic wave propagation. Seismic interferometry can be applied to both controlled-source data and passive data. Under specific circumstances, the useful subsurface information can be retrieved with passive source seismic...
Good cement bonding quality is significant for an oil well to provide zonal isolation and to ensure layered exploitation. Segmented bond tool (SBT) is efficient to detect the bonding conditions between casing and cement. In order to learn more about the physical basis of the SBT equipment, the influence of debonding area on head wave is investigated. With the debonding area increasing in size from...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.