New applications of the pressure derivative in well-test analysis

Journal Article · Fri Sep 01 04:00:00 EDT 1989 · SPE (Society of Petroleum Engineers) Formation Evaluation; (USA)

DOI:https://doi.org/10.2118/16810-PA· OSTI ID:5455697

Onur, M; Reynolds, A C ^[1]; Yeh, N ^[2]

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1. Tulsa Univ., OK (USA)
2. Amoco Production Co., Tulsa, OK (USA)

This work represents and illustrates a new general procedure for constructing type curves on the basis of a new pressure-derivative group that involves the dimensionless pressure change divided by its logarithmic derivative. When type curves based on this group are constructed, the vertical scale of the dimensionless derivative group is automatically aligned with the vertical scale of the field-data derivative group. This automatic alignment of the vertical scales simplifies type-curve matching and is advantageous for determining whether field data actually represent the solution assumed by a given type curve. It is also shown that the basic idea used in constructing the type curves can be used to ensure that proper semilog straight lines are chosen when well-test pressure data are analyzed by semilog methods.

• OSTI ID: 5455697
• Journal Information: SPE (Society of Petroleum Engineers) Formation Evaluation; (USA), Journal Name: SPE (Society of Petroleum Engineers) Formation Evaluation; (USA) Vol. 4:3; ISSN 0885-923X; ISSN SFEVE
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
99 GENERAL AND MISCELLANEOUS
990230 -- Mathematics & Mathematical Models-- (1987-1989)
ALIGNMENT
CALCULATION METHODS
DATA ANALYSIS
ENGINEERING
FIELD TESTS
OIL WELLS
RESERVOIR ENGINEERING
RESERVOIR PRESSURE
TESTING
VERTICAL INTEGRATION
WELLS