Pressure drawdown and buildup analysis techniques for reservoir monitoring tests

Conference · Mon Oct 01 04:00:00 EDT 1984 · Soc. Pet. Eng. AIME, Pap.; (United States)

OSTI ID:6250940

Guillot, A Y; Horne, R N

Methods for analysing drawdown and buildup data during reservoir monitoring test sequences are described and illustrated. Reservoir monitoring well tests are characterised by a short shut-in period to run pressure gauges followed by a drawdownbuildup sequence. A new approach to analysing drawdown test data following a short shut-in period during reservoir monitoring efforts is presented. The method employs a variation of the classical Horner/sup 1/ plot technique and is applicable to radial flow and pseudo radial flow systems. The flowing bottomhole pressure immediately prior to running the gauges in the hole can be determined from the plot and thus aid in the analysis of the first shut-in period data. The effect of the ratio of the first shut-in period to the test drawdown period on the final shut-in Horner plot slope is presented. The correct method of plotting the final buildup data along with the error involved by using conventional plotting techniques is discussed.

• Research Organization: Stanford Univ.
• OSTI ID: 6250940
• Report Number(s): CONF-8410154-
• Conference Information: Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE12958
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
DATA ANALYSIS
ERRORS
GEOLOGIC DEPOSITS
GRAPHS
MEASURING INSTRUMENTS
MINERAL RESOURCES
MONITORING
OIL WELLS
PETROLEUM DEPOSITS
PRESSURE DROP
PRESSURE GAGES
PRESSURE MEASUREMENT
PRESSURIZING
RESERVOIR PRESSURE
RESOURCES
WELL LOGGING
WELLS