Understanding MWD data acquisition can improve log interpretation

Journal Article · Mon Feb 14 04:00:00 EST 1994 · Oil and Gas Journal; (United States)

OSTI ID:7276015

Fagin, R A ^[1]

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1. Atlas Wireline Services, Houston, TX (United States)

By understanding how measurement-while-drilling (MWD) tools acquire data and how the data are processed, engineers and geologists can better interpret MWD logs. Wire line and MWD log data sometimes do not precisely match. If a discrepancy occurs between MWD and wire line logs run across the same interval, many log interpreters will condemn the MWD data. Recognizing the differences and the correct data requires a better understanding of the MWD tool operational principles. Because MWD logs are becoming more widely accepted as quantitative replacements for equivalent wire line logs, the differences between logs should be analyzed logically. This paper discusses these differences by describing the following: time-based acquisition, filtering, depth control, environmental variables, and quality control.

• OSTI ID: 7276015
• Journal Information: Oil and Gas Journal; (United States), Journal Name: Oil and Gas Journal; (United States) Vol. 92:7; ISSN OIGJAV; ISSN 0030-1388
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
COMMUNICATIONS
DATA ANALYSIS
DATA PROCESSING
DATA TRANSMISSION
MWD SYSTEMS
OPERATION
PROCESSING
RESERVOIR TEMPERATURE
TELEMETRY