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Application of temperature transient analysis in well test interpretation for gas wells

Bahrami, H ; Sharif University of Technology

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  1. Type of Document: Article
  2. Abstract:
  3. During transient tests, both pressure and temperature are changed depending on downhole flow rate. In gas producing wells, Joule-Thomson cooling and frictional heating effects are the main dynamic factors causing flowing bottomhole temperature to differ from the static formation temperature at that depth. When a gas well is shut in, JT cooling effect is vanished and this causes a sharp increase in sandface temperature. As effect of wellbore storage ends, wellbore temperature gradually cools down due to heat conduction with near wellbore region. This paper demonstrates a new technique for using temperature transient data in gas wells in order to determine end of wellbore storage. Also, effect of permeability and well productivity on temperature behavior is discussed. Three field examples are shown in which both temperature and pressure transient data were analyzed for more accurate welltest interpretation. This paper shows how knowledge of the Joule-Thomson cooling effect and frictional heating effect can be applied for reservoir characterization. Copyright 2007, Society of Petroleum Engineers
  4. Keywords:
  5. Boring ; Cooling ; Crude petroleum ; Exhibitions ; Fossil fuels ; Friction ; Gases ; Heat conduction ; Natural gas wells ; Heating ; Oil field equipment ; Petroleum deposits ; Petroleum engineering ; Petroleum prospecting ; Petroleum refineries ; Petroleum reservoir engineering ; Petroleum reservoir evaluation ; Petroleum reservoirs ; Solar radiation ; Technology ; Testing ; Transient analysis ; Well testing
  6. Source: Petroleum Engineers - SPE Asia Pacific Oil and Gas Conference and Exhibition 2007 "Resources, Professionalism, Technology: Time to Deliver"30 October 2007 through 1 November 2007Code 73703 ; Volume 2 , 2007 , Pages 643 - 655 ; 9781604238594 (ISBN)
  7. URL: https://www.researchgate.net/publication/254527125_Applicaion_of_Temperature_Transient_Analysis_In_Well_Test_Interpretation_For_Gas_Wells