Wednesday, November 7, 2018

Common Challenges In Production Data Analysis

By Margaret Scott


In todays life data has come to be associated with everything and whenever large volumes of multiple sources and several frequency information need to be handled or classifying and coordinating events is required, then Production Data Analysis comes in handy. This analysis is also used in handing out appropriate creation rates to the concerned event. Below article will describe the importance of figures analysis.

This type of records analysis is one that researchers can depend on to give them the best results when dealing with mature fields. In creation information study, practical methods have been the ones that have become dominant and they are categorized into two being Decline Curve study DCA which does not entail reservoir characteristics and Type Curve Matching which is subjective.

Accurate and frequent estimates of rate and pressure information are considered to be a necessity. If the flow rate suddenly increases or decreases, then the pressure should decrease and increase respectively if not then the flow rate and pressure information are inconsistent or uncorrelated. This could mean that flow is taking a different path, flow pressure is measured in the wrong direction or a liquid is loading.

Decline Curve study is one of the methods used and it used as a temporary benchmark for estimating b. Those employing this method already know it is a mathematical technique used to forecast performance and it does not entail any physical basis. TCM uses a set of curves generated based on the value of b that was obtained from Decline Curve study.

It is a reliable technique as it also employs other methods like history matching to try and increase its accuracy of estimation and interpretation of figures. History matching is quite a challenging method and is not as straightforward as it may seem as it is solely based on facts. However when type curve investigation is used them the results acquired through history matching are not used.

In the context of creation information investigation deconvolution will be used only as a B - spline diagnostic method to identify inconsistencies in the pressure information. It does not allow estimation of rates thus the given rates are assumed to be correct. If plot shows major variations, then the information is inconsistent despite measured flowrates and pressure being incorrect. Comparison of raw and history figures is crucial.

Diagnostic plot implies that a certain feature will emerge from a given figures profile. The goal is to provide a broad spectrum of diagnostic insight of the plots. If significant information mismatch were to exit, then we would conclude that these creation figures are not correlated or possibly corrupted. Comparison of measured pressures and those pressures computed from deconvolution show only fair agreement.

Data that has well being researched on and collected without any bias or inconsistency then it should be able to arrive on accurate estimations rates and pressure data ant these findings should be sturdy and dependable and can stand in comparison to estimations from analyzed transient records. It should also present a model of history matching as a move to help compare pressure and raw rate records.




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