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The Study of New Method of Modern Well Testing By Using Surface Control

AZLAN, ALI AL-AMANI (2011) The Study of New Method of Modern Well Testing By Using Surface Control. Universiti Teknologi PETRONAS. (Unpublished)

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Abstract

The accurate infonnation of the in-situ reservoir condition is very significant to every phase in petroleum engineering thus help the reservoir engineers to have better understanding on the reservoir and completion efficiency qualitatively and quantitatively. The analysis toward pressure data recorded during well test has been used for many years to evaluate the reservoir characteristic especially in determining the value of well damage (skin), effective permeability and heterogtllleity behavior. However, well testing has become increasingly unpopular especially in exploration and appraisal wells due to the expensive costs, safety and environmental impact factors. For the production well, the potential revenue loss during buildup testing is one of the reason to decline well testing in their activity. For past 30 years, many methods have been published to improved the well testing technique but the problem of the cost either the expensive tools or the production loss is still occur. This paper presented the new technique of implementing well testing by using surface control which reduces the cost and eliminates the risk of running tools into well bores. This new technique also created to overcome the problem of the constant rate which in practical it is not achieved by allowing the varying rate test. Thus, it will increase better interpretation with lower the uncertainty ranges. The idea of this new technique will overcome all the weakness of conventional well testing and brings the significant impact to the industry. First, the general framework of the flowing surface-bottomhole pressure calculation will be presented which will be compared with the measured data from field and also with the calculation from the computer program using Modified Hagedorn and Brown Correlation. The pressure difference between the calculated flowing bottomhole pressure with measured depth averagely 3 to 6 psia. Next, the study of Tiab's Direct Synthesis method with the available multi rate test data taken from published source is analyzed and compared the result with the conventional analysis. The results obtained from the Tiab's Direct Synthesis method are very close with real data which the percentage difference of the absolute permeability estimate is about 0.36%. The specific procedure required in order to implement this new technique which focusing on choke control and test design will also be explained. The report also presents some case study of application of well testing toward estimating reservoir parameters for Malaysia fields.

Item Type: Final Year Project
Academic Subject : Academic Department - Petroleum Geosciences - Petrophysics - Petrophysical data acquisition
Subject: T Technology > T Technology (General)
Divisions: Geoscience and Petroleum Engineering
Depositing User: Users 2053 not found.
Date Deposited: 08 Nov 2013 11:37
Last Modified: 25 Jan 2017 09:42
URI: http://utpedia.utp.edu.my/id/eprint/10352

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