Application of temperature transient analysis for welltest interpretation and well productivity evaluation

Bahrami, N ; Sharif University of Technology | 2007

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  1. Type of Document: Article
  2. DOI: 10.2118/109544-MS
  3. Publisher: 2007
  4. Abstract:
  5. 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
  6. Keywords:
  7. Asia-Pacific ; Bottom hole temperature ; Cooling effects ; Down hole ; Dynamic factors ; Flow-rate ; Formation temperature ; Frictional heating ; Gas producing wells ; Gas wells ; Joule-Thomson cooling ; Near-wellbore region ; Oil and gas ; Pressure and temperature ; Pressure transient data ; Reservoir characterization ; Sharp increase ; Society of petroleum engineers ; Temperature behaviors ; Temperature transient analysis ; Temperature transients ; Time-to-deliver ; Transient testing ; Well bore storage ; Well productivity ; Well test interpretation ; Wellbore temperatures ; Boring ; Cooling ; Crude petroleum ; Engineers ; Exhibitions ; Fossil fuels ; Friction ; Gases ; Heat conduction ; Heating ; Natural gas wells ; 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 ; Wells ; Oil wells
  8. Source: Society of Petroleum Engineers - SPE Asia Pacific Oil and Gas Conference and Exhibition, Jakarta, Indonesia,October 30–November 1, 2007 ; 2007 ; 9781613990407 (ISBN)
  9. URL: https://onepetro.org/SPEAPOG/proceedings-abstract/07APOGCE/All-07APOGCE/SPE-109544-MS/142852