AN ADVISORY SYSTEM FOR THE DEVELOPMENT OF UNCONVENTIONAL GAS RESERVOIRS

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Title: AN ADVISORY SYSTEM FOR THE DEVELOPMENT OF UNCONVENTIONAL GAS RESERVOIRS
Author: Wei, Yunan
Abstract: With the rapidly increasing demand for energy and the increasing prices for oil and gas , the role of unconventional gas reservoirs (UGRs ) as energy sources is becoming more important throughout the world . Because of high risks and uncertainties associated with UGRs , their profitable development requires experts to be involved in the most critical development stages , such as drilling , completion , stimulation , and production . However , many companies operating UGRs lack this expertise . The advisory system we developed will help them make efficient decisions by providing insight from analogous basins that can be applied to the wells drilled in target basins . In North America , UGRs have been in development for more than 50 years . The petroleum literature has thousands of papers describing best practices in management of these resources . If we can define the characteristics of the target basin anywhere in the world and find an analogous basin in North America , we should be able to study the best practices in the analogous basin or formation and provide the best practices to the operators . In this research , we have built an advisory system that we call the Unconventional Gas Reservoir (UGR ) Advisor . UGR Advisor incorporates three major modules : BASIN , PRISE and Drilling & Completion (D &C ) Advisor . BASIN is used to identify the reference basin and formations in North America that are the best analogs to the target basin or formation . With these data , PRISE is used to estimate the technically recoverable gas volume in the target basin . Finally , by analogy with data from the reference formation , we use D &C Advisor to find the best practice for drilling and producing the target reservoir . To create this module , we reviewed the literature and interviewed experts to gather the information required to determine best completion and stimulation practices as a function of reservoir properties . We used these best practices to build decision trees that allow the user to take an elementary data set and end up with a decision that honors the best practices . From the decision trees , we developed simple computer algorithms that streamline the process .
URI: http : / /hdl .handle .net /1969 .1 /ETD -TAMU -2009 -05 -278
Date: 2010-01-16

Citation

AN ADVISORY SYSTEM FOR THE DEVELOPMENT OF UNCONVENTIONAL GAS RESERVOIRS. Available electronically from http : / /hdl .handle .net /1969 .1 /ETD -TAMU -2009 -05 -278 .

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