Table 4.7  Crude Oil and Natural Gas Development Wells, 1949-2007
Year	Wells Drilled								Successful Wells		Footage Drilled 1								Average Depth
	Crude Oil 2		Natural Gas 3		Dry Holes 4		Total				Crude Oil 2		Natural Gas 3		Dry Holes 4		Total		Crude Oil 2		Natural Gas 3		Dry Holes 4		Total
	Number								Percent		Thousand Feet								Feet per Well
1949	19,946		2,939		5,369		28,254		81.0		73,478		10,028		17,315		100,821		3,684		3,412		3,225		3,568
1950	22,229		3,008		6,507		31,744		79.5		85,833		11,329		20,020		117,183		3,861		3,766		3,077		3,691
1951	21,416		2,984		7,487		31,887		76.5		86,981		11,451		24,370		122,802		4,061		3,837		3,255		3,851
1952	21,514		2,955		7,669		32,138		76.1		89,657		11,863		26,999		128,518		4,167		4,015		3,520		3,999
1953	23,342		3,269		7,816		34,427		77.3		92,704		14,296		26,582		133,581		3,972		4,373		3,401		3,880
1954	26,156		3,312		8,541		38,009		77.5		103,953		14,458		29,998		148,408		3,974		4,365		3,512		3,905
1955	28,196		3,392		8,620		40,208		78.6		110,374		14,718		31,883		156,976		3,915		4,339		3,699		3,904
1956	28,261		3,709		8,993		40,963		78.0		109,241		17,559		32,143		158,943		3,865		4,734		3,574		3,880
1957	25,419		3,610		8,252		37,281		77.9		100,249		17,869		29,747		147,864		3,944		4,950		3,605		3,966
1958	22,029		4,183		7,530		33,742		77.7		84,393		20,083		27,343		131,820		3,831		4,801		3,631		3,907
1959	22,341		4,019		8,012		34,372		76.7		86,066		20,575		30,800		137,441		3,852		5,120		3,844		3,999
1960	20,937		4,281		8,697		33,915		74.4		79,739		22,780		33,826		136,345		3,809		5,321		3,889		4,020
1961	20,280		4,673		8,309		33,262		75.0		79,726		24,042		31,423		135,191		3,931		5,145		3,782		4,064
1962	20,516		4,582		8,263		33,361		75.2		82,226		23,762		35,030		141,018		4,008		5,186		4,239		4,227
1963	18,821		3,906		8,076		30,803		73.8		75,400		20,303		33,460		129,164		4,006		5,198		4,143		4,193
1964	18,686		4,137		8,743		31,566		72.3		73,748		21,394		36,782		131,923		3,947		5,171		4,207		4,179
1965	17,119		3,967		8,221		29,307		71.9		67,956		21,174		36,548		125,678		3,970		5,337		4,446		4,288
1966	15,584		3,679		6,808		26,071		73.9		60,523		20,140		26,552		107,215		3,884		5,474		3,900		4,112
1967	14,343		3,127		5,886		23,356		74.8		52,956		17,602		22,960		93,518		3,692		5,629		3,901		4,004
1968	13,377		2,970		5,373		21,720		75.3		53,875		16,975		23,162		94,012		4,027		5,716		4,311		4,328
1969	13,284		3,467		5,735		22,486		74.5		55,019		19,177		25,446		99,642		4,142		5,531		4,437		4,431
1970	12,211		3,534		4,869		20,614		76.4		52,130		19,945		22,951		95,026		4,269		5,644		4,714		4,610
1971	11,194		3,501		4,357		19,052		77.1		45,323		19,850		20,186		85,358		4,049		5,670		4,633		4,480
1972	10,693		4,784		4,757		20,234		76.5		45,241		25,159		22,475		92,875		4,231		5,259		4,725		4,590
1973	9,525		5,866		4,368		19,759		77.9		40,408		31,007		21,190		92,605		4,242		5,286		4,851		4,687
1974	12,788		5,948		5,283		24,019		78.0		46,996		30,766		24,296		102,059		3,675		5,173		4,599		4,249
1975	15,966		6,879		6,517		29,362		77.8		61,013		36,032		28,772		125,817		3,821		5,238		4,415		4,285
1976	16,602		8,063		6,986		31,651		77.9		62,365		39,992		31,008		133,365		3,756		4,960		4,439		4,214
1977	17,581		10,574		7,702		35,857		78.5		68,581		53,431		35,905		157,917		3,901		5,053		4,662		4,404
1978	18,010		12,642		8,586		39,238		78.1		69,936		64,043		39,493		173,472		3,883		5,066		4,600		4,421
1979	19,530		13,347		8,662		41,539		79.1		74,747		67,825		39,130		181,702		3,827		5,082		4,517		4,374
1980	31,182		15,362		11,704		58,248		79.9		115,085		78,244		49,326		242,655		3,691		5,093		4,214		4,166
1981	41,236		17,728		15,553		74,517		79.1		156,652		91,274		65,720		313,646		3,799		5,149		4,226		4,209
1982	37,022		16,943		15,072		69,037		78.2		136,261		92,386		63,066		291,713		3,681		5,453		4,184		4,225
1983	35,336		13,079		14,149		62,564		77.4		126,412		67,844		56,233		250,489		3,577		5,187		3,974		4,004
1984	40,697		15,810		14,563		71,070		79.5		150,359		81,545		61,236		293,140		3,695		5,158		4,205		4,125
1985	33,581		13,124		12,257		58,962		79.2		127,874		68,149		52,784		248,807		3,808		5,193		4,306		4,220
1986	18,129		7,802		7,232		33,163		78.2		70,246		39,638		30,636		140,520		3,875		5,080		4,236		4,237
1987	15,284		7,340		6,115		28,739		78.7		60,706		37,520		26,842		125,068		3,972		5,112		4,390		4,352
1988	12,791		7,831		5,408		26,030		79.2		53,353		40,371		25,438		119,162		4,171		5,155		4,704		4,578
1989	9,623		8,816		4,302		22,741		81.1		39,607		44,417		20,152		104,176		4,116		5,038		4,684		4,581
1990	11,781		10,433		4,703		26,917		82.5		50,849		52,001		22,383		125,233		4,316		4,984		4,759		4,653
1991	11,434		9,067		4,492		24,993		82.0		51,403		47,045		20,977		119,425		4,496		5,189		4,670		4,778
1992	8,521		7,878		3,734		20,133		81.5		41,615		43,866		17,831		103,312		4,884		5,568		4,775		5,131
1993	8,255		9,633		4,004		21,892		81.7		40,687		57,909		18,819		117,415		4,929		6,012		4,700		5,363
1994	6,422		8,999		3,050		18,471		83.5		33,562		56,856		15,661		106,079		5,226		6,318		5,135		5,743
1995	7,278		7,871		3,040		18,189		83.3		35,524		49,159		15,767		100,450		4,881		6,246		5,187		5,523
1996	8,264		8,948		3,341		20,553		83.7		38,581		55,862		17,561		112,004		4,669		6,243		5,256		5,450
1997	10,011		10,643		3,777		24,431		84.5		48,020		65,612		20,128		133,760		4,797		6,165		5,329		5,475
1998	6,693		10,617		3,156		20,466		84.6		31,989		64,160		17,946		114,095		4,779		6,043		5,686		5,575
1999	4,158		10,602		2,337		17,097		86.3		17,779		52,031		12,756		82,566		4,276		4,908		5,458		4,829
2000	7,318		15,627		2,697		25,642		89.5		31,832		75,117		14,169		121,118		4,350		4,807		5,254		4,723
2001	7,856		20,431		2,716		31,003		91.2		36,293		101,528		13,882		151,703		4,620		4,969		5,111		4,893
2002	5,990		16,027		2,327		24,344		90.4		26,260		86,746		11,757		124,763		4,384		5,412		5,052		5,125
2003	7,144		18,669		2,422		28,235		91.4		32,940		107,070		12,677		152,687		4,611		5,735		5,234		5,408
2004E	7,438	[R]	20,493	[R]	2,274	[R]	30,205	[R]	92.5	[R]	33,734	[R]	119,917	[R]	11,922	[R]	165,573	[R]	4,535	[R]	5,852	[R]	5,243	[R]	5,482	[R]
2005E	9,220	[R]	25,482	[R]	2,705	[R]	37,407	[R]	92.8	[R]	42,312	[R]	150,587	[R]	13,243	[R]	206,142	[R]	4,589	[R]	5,910	[R]	4,896	[R]	5,511	[R]
2006E	11,763		30,028		3,711		45,502		91.8		56,042		184,659		18,425		259,127		4,764		6,150		4,965		5,695
2007E	13,843		31,252		4,052		49,147		91.8		74,850		216,978		21,699		313,527		5,407		6,943		5,355		6,379
1See "Footage Drilled" in Glossary. R=Revised.  E=Estimate.   2See "Crude Oil Well" in Glossary. Notes:  ·  Data are for development wells only; see Table 4.5 for exploratory and development wells combined, and Table 4.6 for exploratory wells only.  ·  Service wells, stratigraphic tests, and core tests are excluded.  ·  For 1949-1959, data represent wells completed in a given year.  For 1960-1969, data are for well completion reports received by the American Petroleum Institute during the reporting year.  For 1970 forward, the data represent wells completed in a given year.  The as-received well completion data for recent years are incomplete due to delays in the reporting of wells drilled.  The Energy Information Administration (EIA) therefore statistically imputes the missing data.  ·  Totals may not equal sum of components due to independent rounding.  Average depth may not equal average of components due to independent rounding. 3See "Natural Gas Well" in Glossary. Web Page:  See http://www.eia.doe.gov/oil_gas/petroleum/info_glance/petroleum.html for related information. 4See "Dry Hole" in Glossary. Sources: · 1949-1965—Gulf Publishing Company, World Oil, "Forecast-Review" issue. ·  1966-1969—American Petroleum Institute, Quarterly Review of Drilling Statistics for the United States, annual summaries and monthly reports.  ·  1970-1994—EIA computations based on well reports submitted to the American Petroleum Institute.  ·  1995 forward—EIA computations based on well reports submitted to the Information Handling Services Energy Group, Inc.  For current data see the EIA, Monthly Energy Review, Table 5.2.