In-situ evaluation of gauges

#The disclosure relates to methods for evaluating sensor data. Specifically, the methods relate to the determination of when downhole gauges should be recalibrated due to sensor draft.

#The control of the production of hydrocarbon wells includes many competing issues and interests including economic efficiency, recapture of investment, safety and environmental preservation. Production levels depend on reservoir formation characteristics such as pressure, porosity, permeability, temperature and physical layout of the reservoir and also the nature of the hydrocarbon (or other material) extracted from the formation. As such, the producing well must be monitored and controlled to maximize the production of hydrocarbons over time and to prevent catastrophic mishaps.

#Measurements such as pressure measurements in producing wells are important to determine how the producing well responds to changes during the production process. The processed data may be used to predict downhole conditions, and make decisions concerning oilfield operations. Such decisions may involve well planning, well targeting, well completions, operating levels, production rates and other operations and/or conditions. Often this information is used to determine when to drill new wells, re-complete existing wells, or alter wellbore production schemes.

#FIG. 1 displays an exemplary wellbore tool used within embodiments of the present disclosure.

#FIG. 2 illustrates an embodiment of the method of the present disclosure.

#FIG. 3 shows the data used in embodiments of the recalibration model of the present disclosure.

#In the following description, numerous details are set forth to provide an understanding of some embodiments of the present disclosure. It is to be understood that the following disclosure provides many different embodiments, or examples, for implementing different features of various embodiments. Specific examples of components and arrangements are described below to simplify the disclosure. These are, of course, merely examples and are not intended to be limiting. In addition, the disclosure may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. However, it will be understood by those of ordinary skill in the art that the system and/or methodology may be practiced without these details and that numerous variations or modifications from the described embodiments are possible. This description is not to be taken in a limiting sense, but rather made merely for the purpose of describing general principles of the implementations. The scope of the described implementations should be ascertained with reference to the issued claims.

#As used herein, the terms “connect”, “connection”, “connected”, “in connection with”, and “connecting” are used to mean “in direct connection with” or “in connection with via one or more elements”; and the term “set” is used to mean “one element” or “more than one element”. Further, the terms “couple”, “coupling”, “coupled”, “coupled together”, and “coupled with” are used to mean “directly coupled together” or “coupled together via one or more elements”. As used herein, the terms “up” and “down”; “upper” and “lower”; “top” and “bottom”; and other like terms indicating relative positions to a given point or element are utilized to more clearly describe some elements. Commonly, these terms relate to a reference point at the surface from which drilling operations are initiated as being the top point and the total depth being the lowest point, wherein the well (e.g., wellbore, borehole) is vertical, horizontal or slanted relative to the surface.

#Data collected by one or more sensors in the reservoir may be used for current or future operations. When used for future operations at the same or other locations, such data may be referred to as “historical data”, whereas data used for current operations is referred to as “field data”. Data collected from the sensors during calibrations performed in a laboratory setting is referred to as “calibration data”.