U. S. crude oil, natural gas, and natural gas liquids reserves. Annual report, 1981

Technical Report · Sun Aug 01 04:00:00 EDT 1982

OSTI ID:6695284

Data on the U.S. reserves of petroleum and natural gas are presented. As of December 31, 1981, U.S. proved reserves were estimated to be 29,426 million barrels of crude oil, 7068 million barrels of natural gas liquids (including lease condensate), and 201,730 billion cubic feet of dry natural gas (excluding gas in underground storage). Natural gas reserves increased 1.4 percent, crude oil reserves decreased 1.3 percent, and natural gas liquids reserves increased 5.1 percent during 1981, generally reflecting important increases in total discoveries, led by new field discoveries. Total liquid hydrocarbon reserves (crude oil plus natural gas liquids) remained virtually constant. Proved reserves of crude oil decreased 379 million barrels during 1981. Total discoveries were up 34 percent from 1980. Indicated additional reserves of crude oil declined only 28 million barrels during 1981, to 1594 million barrels. Proved reserves of dry natural gas increased 2709 billion cubic feet during 1981. Total discoveries were 17,220 billion cubic feet, 2747 billion cubic feet more than in 1980. Proved reserves of natural gas liquids comprised 19.4 percent of total liquid hydrocarbon proved reserves in 1981. Natural gas liquids production represented 20.1 percent of total liquid hydrocarbon production during the report year. The volumes of proved changes booked during 1981 continue to appear consonant with available drilling and completion statistics. Drilling for hydrocarbons increased 29.1 percent during 1981, and achieved all-time highs for the number of holes drilled and for the numbers of successful crude oil and natural gas completions, which were up 38.3 percent and 20.2 percent, respectively. Development drilling continued to comprise the preponderant share of the total annual drilling increase, although a slight shift toward exploratory drilling took place.

• Research Organization: Department of Energy, Washington, DC (USA). Energy Information Administration
• OSTI ID: 6695284
• Report Number(s): DOE/EIA-0216(81); ON: DE83003041
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020100* -- Petroleum-- Reserves-- (-1989)
03 NATURAL GAS
030100 -- Natural Gas-- Reserves-- (-1989)
29 ENERGY PLANNING, POLICY, AND ECONOMY
294002 -- Energy Planning & Policy-- Petroleum
294003 -- Energy Planning & Policy-- Natural Gas
DATA
DATA COMPILATION
DRILLING
ENERGY SOURCES
EXPLORATION
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
GEOLOGIC DEPOSITS
INDUSTRY
INFORMATION
MINERAL RESOURCES
NATURAL GAS
NATURAL GAS DEPOSITS
NATURAL GAS INDUSTRY
NATURAL GAS WELLS
NORTH AMERICA
NUMERICAL DATA
OIL WELLS
PETROLEUM
PETROLEUM DEPOSITS
PETROLEUM INDUSTRY
PRODUCTION
RESERVES
RESOURCES
USA
WELL DRILLING
WELLS