System and method for generating profile-based alerts/alarms

#Common practice in pressure management services is to constantly monitor the annular pressure or its pressure gradient equivalent (ECD) at the pressure sensor position and check if the value is in the allowed pressure window. A single downhole tool is normally used to measure the annular pressure and to calculate the ECD with the true vertical depth of the tool. Thus modeling is required, in order to fill the sensor gaps.

#Modern digital systems are able to calculate parameters based on physical or empirical models in intervals, in which measured sensors values are not available. Both, time and location sensor gaps can be bridged with modern digital technologies. Whereas the visualization of the modeled values is done based on the individual application, it is difficult to put them into the context of allowed operational ranges for a whole interval. If alarms need to be generated, usually a small number of points of interests (POI) from the interval is selected and put into the context of minimum and maximum allowed critical or warning values. The direct comparison of the actual value and the min/max ranges is usually visualized with traffic light colors.

#A method of processing parameter data includes: receiving at least one alarm value for a selected interval, the at least one alarm value generated based on a comparison of estimated parameter values at one or more respective interval points with limits at the respective interval points; performing, by a processor, a statistical analysis of the at least one alarm value over the selected interval; and generating an alarm indication associated with the selected interval, the alarm indication corresponding to a result of the statistical analysis.

#The subject matter which is regarded as the invention is particularly pointed out and distinctly claimed in the claims at the conclusion of the specification. The foregoing and other features and advantages of the invention are apparent from the following detailed description taken in conjunction with the accompanying drawings in which:

#FIG. 1 is a side cross-sectional view of an embodiment of a subterranean well drilling, evaluation, exploration and/or production system;

#FIG. 2 illustrates exemplary visual alarms or alarm indications;

#There are provided systems and methods for generating alert or alarm indications in conjunction with downhole parameters. A data visualization and alarm method utilizes measured or modeled values in a selected interval (e.g., depth or time interval) for comparison with alarm data, such as discrete data points and/or alarm data curves, and displays the measured or modeled data in the context of one or more alarm levels (e.g., on a display screen or printed report). This allows visualizing a high resolution alarm history for every single point in an interval. The alarms can be accumulated and statistically analyzed for specified depth intervals to generate accumulated alarms, which can be used to display various kinds of information for each interval. In one embodiment, the alarm displays can be visually compacted, which allows alarm data to be shown using less space, and also allows alarm data to be shown in context with other information. The systems and methods described herein also allow for control of the level of detail that is viewed by zooming between lower resolution and high resolution displays.

#In one embodiment, relatively high resolution alarm data is accumulated on a depth scale and/or time scale, by statistically analyzing alarm data over a selected interval and generating an alarm indication for that interval. Severity levels can be attached to each selected depth or time location or interval, and displayed so that times or locations at which a parameter is out of an acceptable range can be readily identified.

#Referring to FIG. 1, an exemplary embodiment of a well drilling, measurement, evaluation and/or production system 10 includes a borehole string 12 that is shown disposed in a borehole 14 that penetrates at least one earth formation during a downhole operation, such as a drilling, measurement and/or hydrocarbon production operation. In the embodiment shown in FIG. 1, the borehole string is configured as a drill string. However, the system 10 and borehole string 12 are not limited to the embodiments described herein, and may include any structure suitable for being lowered into a wellbore or for connecting a drill or downhole tool to the surface. For example, the borehole string 12 may be configured as coiled tubing, a wireline or a hydrocarbon production string.