Pressure transient behavior of dilatant non-Newtonian/Newtonian fluid composite reservoirs
This study investigates pressure falloff testing in non-Newtonian/Newtonian fluid composite reservoirs. The non-Newtonian fluids of interest exhibit dilatant behavior. Initial water saturation is accounted for. Application of non-Newtonian well test analysis techniques and conventional Horner (Newtonian) techniques is investigated. The effects of different injection times before shut-in, external radii, flow behavior indexes and non-Newtonian fluid consistencies on the pressure transient behavior constitute the salient features of this work. It is shown that early time falloff pressure data can be analyzed by non-Newtonian techniques while the late shut-in data, under certain conditions, can be analyzed by the conventional Horner method. The time when the Newtonian fluid starts influencing the non-Newtonian falloff curves and the location of the non-Newtonian fluid front can be estimated by using the radius of investigation equation for power-law fluids and volumetric balance equation respectively. Rheological consideration is made to illustrate the pressure transient behavior.
- Research Organization:
- Nigerian Natl. Petroleum Corp.
- OSTI ID:
- 5198028
- Report Number(s):
- CONF-8311107-
- Journal Information:
- Soc. Pet. Eng. AIME, Pap.; (United States), Vol. SPE-12307; Conference: Society of Petroleum Engineers of AIME eastern regional meeting, Champion, PA, USA, 9 Nov 1983
- Country of Publication:
- United States
- Language:
- English
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