Abstract: A system, a method, and a graphics user interface for displaying an indexed data set in a window on a computer display device has a pane in which indexed data is displayed at a different level of resolution from data displayed outside of the pane. The pane may be moved within the window. The window may further include at least one side pane which is used to display data at yet another level of resolution.

Abstract: A well-log display (160) having a principle axis (135) matched to a deviation of a section of a well-bore (450) is disclosed. By presenting a well-log (160) at about the same angle as the section of the well-bore under consideration, a person viewing the well-log (160) will have the advantage of easily visualizing the inclination of the well-bore (450) to aid in geo-steering, proper interpretation of well-bore measurements, etc. Such a well-log (160) may be presented as a hardcopy or as an interactive display on a computer screen (642). A presentation (100, 200) of a well-log (160) may include more than just the log itself, for example, a reference diagram (100, 200) of the entire well highlighting (130) or otherwise indicating the part of the well currently being displayed in the well-log.

Abstract: A well-log display (160) having a principle axis (135) matched to a deviation of a section of a well-bore (450) is disclosed. By presenting a well-log (160) at about the same angle as the section of the well-bore under consideration, a person viewing the well-log (160) will have the advantage of easily visualizing the inclination of the well-bore (450) to aid in geo-steering, proper interpretation of well-bore measurements, etc. Such a well-log (160) may be presented as a hardcopy or as an interactive display on a computer screen (642). A presentation (100, 200) of a well-log (160) may include more than just the log itself, for example, a reference diagram (100, 200) of the entire well highlighting (130) or otherwise indicating the part of the well currently being displayed in the well-log.

Abstract: A method, system and apparatus for calibrating the longitudinal accuracy of marking devices by using a comparison of a pattern printed on the transverse scale to a pattern printed on the longitudinal scale to calibrate the longitudinal scale is disclosed. The marking device could be a strip chart recorder, a printer, a well log printer or any other marking device for which one scale is less subject to variations or error than another. The information used for the calibration may be retained for re-use.