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Gas well deliverability testing Design and Analysis Methods

Author: ZhangWenZhong
Tutor: WangXiaoDong
School: Chinese Geology University (Beijing)
Course: Oil and Gas Field Development Project
Keywords: Gas pool Deliverability testing Open flow Unsteady flow
CLC: TE377
Type: Master's thesis
Year: 2005
Downloads: 1030
Quote: 4
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Abstract


The 21st century, the rapid development of natural gas industry, increasing the proportion of natural gas in the world's energy structure and China's energy structure. Since natural gas is a clean energy, a strong proponent of environmental protection in modern society, the natural gas in the economic and social development will play an increasingly important role. Accurate analysis of the dynamics of the gas wells in the gas field development process, to understand the characteristics of the gas, predict gas well production capacity, is the basis for the development of gas fields in science. Gas well production well testing is to predict gas well deliverability, analysis of wells dynamic, the most commonly used and most important way to understand the characteristics of gas and wellbore. Therefore, the gas well deliverability testing and gas well deliverability analysis method has a very important position and role in the gas field development and exploitation. This paper is divided into six parts, the Introduction section describes the history and current status of the gas well deliverability testing, as well as traditional capacity test data analysis problems; second chapter briefly introduces the theoretical basis of the gas reservoir seepage, sub-homogeneous gas Tibetan and non-homogeneous gas reservoirs described the establishment of a new method laid the foundation behind the gas well productivity analysis; chapters III and IV, respectively, on a variety of deliverability testing design and testing data analysis methods are described, analyzed advantages and disadvantages of the method and design of a variety of well test, given the improved capacity; fifth chapter is the innovative part of the paper, binomial pressure level re-derived homogeneous Gas well and heterogeneity Gas well deliverability equation, summed up the the instantaneous open flow calculation method, the analysis of transient testing data, and through examples were calculated and were compared with the conventional method. Sixth chapter concludes Meet some. On the basis of the theoretical part, the memories elaborated homogeneous gas reservoir and non-homogeneous gas reservoirs unstable capacity analysis of mathematical models derived in Chapter pressure level unstable Capacity Analysis binomial productivity equation, through the specific data analysis showed that the instability capacity to analyze the results credibility. The method does not require a stable production capacity test, mine production saving test time and cost of testing, has brought direct economic benefits but also makes to capacity test does not affect the gas field production, which can be more well productivity testing and indirect economic benefits, has a certain practicality and feasibility. This thesis, the traditional well test data analysis methods to improve deliverability testing and data analysis has been further developed to provide a better theoretical basis and application methods, the actual production of the gas field.

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CLC: > Industrial Technology > Oil and gas industry > Oil and gas development and mining > Gas field development and exploitation of > Gas fields to improve oil recovery methods
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