Well-test analysis for non-Newtonian fluid flow
Thesis/Dissertation
·
OSTI ID:5371236
This dissertation examines pressure behavior subsequent to the injection of a non-Newtonian power-law pseudoplastic fluid. Responses at an unfractured well and at a well intercepting a planar fracture or a finite-conductivity fracture are studied. A rigorous examination of both injection and falloff responses is presented. Two approximate solutions for the transient (radial) flow presented in the literature are examined. The use of these solutions to analyze falloff data and correction factors needed are investigated. The influence of injection time on falloff data is documented. The influence of wellbore storage and skin on pressure responses is considered. The effective wellbore radius concept is used to combine the wellbore storage constant and the skin factor. Infinite-conductivity and uniform-flux idealizations are used to examine responses at wells intercepting planar fractures. Procedures to identify flow regimes are discussed. The solutions presented here may be used to determine fluid mobility, fracture half-length and the power-law index. Procedures to analyze pressure data during pseudoradial flow are also discussed. The effective wellbore radius concept is used to relate the skin factor with fracture half-length. Also, the utility of the pressure derivative techniques and the influence of injection time on the ability to analyze falloff data are documented. Lastly, pressure responses at a well intercepting a finite-conductivity fracture are examined. The parameters that govern the well response are identified. The solutions presented here may be used to obtain fracture half-length, fluid mobility and fracture conductivity, provided that the power-law index is known. All solutions were obtained by using standard finite-difference techniques.
- Research Organization:
- Tulsa Univ., OK (USA)
- OSTI ID:
- 5371236
- Country of Publication:
- United States
- Language:
- English
Similar Records
Pressure falloff behavior in vertically fractured wells: Non-Newtonian power-law fluids
Pressure falloff behavior in vertically fractured wells: Non-Newtonian power-law fluids
Well test analysis of data dominated by storage and skin: Non-Newtonian power-law fluids
Conference
·
Sat Sep 01 00:00:00 EDT 1984
· Soc. Pet. Eng. AIME, Pap.; (United States)
·
OSTI ID:6073221
Pressure falloff behavior in vertically fractured wells: Non-Newtonian power-law fluids
Journal Article
·
Mon Nov 30 23:00:00 EST 1987
· SPE (Society of Petroleum Engineers) Format. Eval.; (United States)
·
OSTI ID:5663132
Well test analysis of data dominated by storage and skin: Non-Newtonian power-law fluids
Journal Article
·
Mon Nov 30 23:00:00 EST 1987
· SPE (Society of Petroleum Engineers) Format. Eval.; (United States)
·
OSTI ID:5463291