Analysis of pressure buildup data influenced by wellbore phase redistribution

Journal Article · Wed Oct 01 04:00:00 EDT 1986 · SPE (Society of Petroleum Engineers) Format. Eval.; (United States)

DOI:https://doi.org/10.2118/12782-PA· OSTI ID:5097066

Thompson, L G; Jones, J R; Reynolds, A C

This work considers the influence of wellbore phase redistribution effects on the analysis of pressure buildup data. First, the authors show that the pressure responses observed when phase redistribution effects exist consist of three distinct types and delineate the conditions under which each type exists. Second, they investigate the reliability of Fair's type curves for analyzing pressure data. Third, for each type of pressure response, they provide rules for determining when the conventional semilog straight line will begin on a semilog plot of pressure data vs. time. They also consider general procedures that are based on Duhamel's principle for analyzing pressure data when sandface flow rates are also available. They discuss the application of these methods to analyze pressure data influenced by wellbore storage effects and investigate the effect that errors in the measured sandface rate have on the analysis.

• Research Organization: Univ. of Tulsa
• OSTI ID: 5097066
• Journal Information: SPE (Society of Petroleum Engineers) Format. Eval.; (United States), Journal Name: SPE (Society of Petroleum Engineers) Format. Eval.; (United States) Vol. 1:5; ISSN SFEVE
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
DATA ANALYSIS
DIAGRAMS
ERRORS
FLOW RATE
OIL WELLS
PHASE TRANSFORMATIONS
PRESSURE EFFECTS
PRESSURIZING
RELIABILITY
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
TIME DEPENDENCE
WELLS