Pressure transient behavior of dilatant non-Newtonian/Newtonian fluid composite reservoirs

Conference · Tue Nov 01 04:00:00 EST 1983 · Soc. Pet. Eng. AIME, Pap.; (United States)

OSTI ID:5198028

Okpobiri, G A; Ikoku, C U

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-
• Conference Information: Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE-12307
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
CALCULATION METHODS
FLUID FLOW
FLUID MECHANICS
FLUIDS
MECHANICS
PRESSURE DROP
RESERVOIR FLUIDS
RESERVOIR PRESSURE
RESERVOIR ROCK
RHEOLOGY
TRANSIENTS