Dataset · MLC-0103 · [FULL TEXT]

Oil and gas terminology

Name: Oil and gas terminology
Creator: MLchart
License: https://mlchart.com/terms/

1Description

Oil and gas terminology. 4,469 terms with definitions, abbreviations and subjects. Every term is published as its own page, A to Z.

41 terms carry more than one definition, numbered in the record.

Subjects (21): Drilling Fluids (721); Geophysics (552); Geology (524); Drilling (432); Formation Evaluation (418); Well Completions (337); Well Workover and Intervention (240); Enhanced Oil Recovery (184); Production Testing (162); Reservoir Characterization (155); Well Testing (154); Production Logging (107); and 9 more.

2Schema

Table 1. Fields
Field	Type	Description	Example
id	string	Stable MLchart term identifier	MLC-T-OAG-000216
term	string	Headword as published	Authorization for expenditure (AFE)
field	string	Field of the dataset	Oil and gas
definition	string	Definition text; several definitions are numbered	A formal document outlining the estimated costs for a specific oil...
abbreviation	string	Abbreviation or acronym	AFE
subject	string	Subject within the field	Oil and Gas Business
url	string	Canonical page of the term	https://mlchart.com/terminology/oil-and-gas/authorization-for-expendit...

3Sample records

Sample record

{
  "id": "MLC-T-OAG-000216",
  "term": "Authorization for expenditure (AFE)",
  "field": "Oil and gas",
  "definition": "A formal document outlining the estimated costs for a specific oil and gas project, such as drilling, completing, or recompleting a well. Working interest owners must approve the AFE before operations begin, committing them to their proportionate share of the expenses. It serves as a budget and a mechanism for cost control among joint venture participants.",
  "abbreviation": "AFE",
  "subject": "Oil and Gas Business",
  "url": "https://mlchart.com/terminology/oil-and-gas/authorization-for-expenditure-afe/"
}

4Browse

Table 2. Terms by initial
Initial	Terms	From	To
A	255	A	Azimuthal resolution
B	292	Back flow	Bypassed mud
C	465	C pump	Cylinder operator
D	314	Damage	Dynamometer card
E	141	Early time transient data	External upset
F	259	Fabric	FWKO
G	184	Gain	Gypsum
H	157	H2S	Hyperscaler
I	139	ICD	Iterative methods
J	22	J factor	Junk sub
K	32	K coefficient	Kurtosis
L	138	Lacustrine	Lyophobic colloid
M	266	M	Mysid shrimp
N	86	N	Numerical reservoir simulation
O	93	OBC	Oxygen scavenger
P	364	P rate	Pyrrhotite
Q	14	Q	Q-wave
R	201	R signal	Rwa
S	548	Sabkha	Systems tract
T	240	T1	Type curves
U	44	Udden-Wentworth scale	U-tube effect
V	68	Validation data	Vugular porosity
W	117	Wadati-Benioff zone	Wrench fault
X	7	Xanthan gum	Xylene
Y	6	Yield	Young's modulus
Z	17	Z/A effect	Zone

Acronyms and abbreviations: 49 entries with expansions.

5Uses

Domain adaptation and fine-tuning of language models
Term extraction, entity recognition and entity linking
Glossary, thesaurus and ontology construction
Search query expansion and synonym mapping
Evaluation sets for definition and question answering tasks

6Citation

@misc{mlchart_terminology_oil_and_gas_2026,
  title     = {Oil and gas terminology},
  author    = {MLchart},
  publisher = {MLchart},
  year      = {2026},
  version   = {2026.10},
  url       = {https://mlchart.com/terminology/oil-and-gas/}
}

MLchart. (2026). Oil and gas terminology (Version 2026.10) [Data set]. https://mlchart.com/terminology/oil-and-gas/

7Access

The full Oil and gas terminology dataset (MLC-0103), 4,469 records. Delivered as JSONL, CSV or Parquet under a commercial licence.

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