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• Magnetics: interpreting residual maps
  ...tary section in a new basin, i.e., in determining whether it is 2, 5, or [[length::10 km]] thick, for example, to a usual accuracy of about ±15% under favor ...roximately 3.6 km (12,000 ft) thick and basement lies about 3.8 km (12,500 ft) beneath flight level.]]
  8 KB (1,109 words) - 17:41, 24 January 2022
• Seal capacity of different rock types
  * Most good sands can trap only [[length::50 ft]] or less of oil column. * Poor sands and siltstones can trap 50–400 ft of oil column.
  5 KB (760 words) - 20:55, 31 March 2022
• Displacement pressure: theory vs. reality
  ...ld in the Tar Springs Formation reservoir is [[length::29 m]] [[depth::(95 ft]]). ...seal have an average range of 150–200 psi (air-mercury) and can seal 10.86–12.64 m of oil. The maximum height of the actual trapped oil column is [[depth
  4 KB (587 words) - 13:36, 1 April 2022
• Cased hole tools
  | Gamma ray || [[length::2 ft]] || [[length::12 in]] || Well-to-well correlation and estimates ''V''_sh || Affect
  10 KB (1,427 words) - 16:26, 18 January 2022
• Static gas pressure gradient estimation
  ::<math>\mbox{P}_{\rm gas\ grad} = \rho_{\rm gas} \times 0.433 \mbox{ psi/ft}</math> * Molecular weight of carbon (C) = 12
  7 KB (979 words) - 15:24, 17 February 2022
• Borehole gravity
  ...ma-gamma [[density log]]. The broader difference anomaly observed over the length of the logged interval is explained by the structural influence of the reef ...le resolution in the measurement of density over intervals of [[length::10 ft]] or more (less than 0.01 g/cm³), surveys requiring closer verti
  10 KB (1,517 words) - 15:54, 20 January 2022
• Seismic data: building a stratigraphic model
  | frompg = 12-13 | topg = 12-14
  5 KB (805 words) - 19:06, 27 January 2022
• Petrophysical analysis of Sorrento field wells
  ...ones that are wet but too tight to produce. Between these are [[length::30 ft]] [[depth::(8.5 m]]) of mesoto macroporous sandstone (flow units 1-4). Subsea elevation of –1,030 ft (–314 m) is marked in the depth track.
  7 KB (956 words) - 17:24, 11 April 2022
• Rate of penetration
  ...s calculated by measuring the length of time required to drill [[length::1 ft]] of depth. This is typically done by reading the chart on the geolograph. ...pen on the geolograph places a small mark on the chart. Every [[length::5 ft]] the pen places a larger mark on the chart ([[:file:rate-of-penetration_fi
  7 KB (1,049 words) - 19:02, 20 January 2022
• Open hole tools
  | Spontaneous potential (SP) || 6–10 ft || N/A || Well-to-well correlation, estimate ''R''_w , and indica | Gamma ray || [[length::2 ft]] || [[length::12 in]] || Well-to-well correlation and estimate ''V''_sh || Sensiti
  23 KB (3,350 words) - 17:26, 18 January 2022
• Artificial lift
  ...wells that must lift high volumes of fluids from less than [[depth::10,000 ft]] deep. ESPs are often used in the late stages of [[waterflooding]] where h ...he beam pumping system is set by the size of the downhole pump, the stroke length of the rod string, and the speed at which the rod string is reciprocated. W
  7 KB (1,094 words) - 20:47, 19 January 2022
• Wellsite math
  | D || Vertical depth || ft | V_bpf || Volume || bbl/ft
  21 KB (3,142 words) - 15:10, 24 January 2022
• Utica Shale, Ohio, Pennsylvania, West Virginia and Kentucky
  ...is highest in the organic rich Point Pleasant interval ranging from 3% to 12%. The TOC increases to the east and to the southeast. This same interval is ...a superlateral in shorter amount of time and for less money than the 6500 ft. laterals it drilled earlier.
  3 KB (542 words) - 22:36, 4 March 2022
• Synthetic seismogram
  ...nd density curves are digitized at a sample interval of 0.5 to [[length::1 ft]]. (If the density curve is not available, the sonic alone may be used.) | frompg = 12-1
  8 KB (1,199 words) - 13:57, 24 January 2022
• Structural exploration: thrust belt example
  ...oblique aerial photograph in [[:file:exploring-for-structural-traps_fig20-12.png|Figure 9]]. file:exploring-for-structural-traps_fig20-12.png|{{figure number|9}}Structures in the upper plate of the Absaroka thrust
  14 KB (1,897 words) - 20:01, 3 February 2022
• Stimulation
  ...uses the fracture to extend from the wellbore, and this growth in fracture length is accompanied by an increase in fracture width at the wellbore and proport ...ft]] in a tectonically relaxed area with a terrastatic gradient of 1.0 psi/ft of depth. In such a shallow well, the overburden stress can be overcome mor
  24 KB (3,633 words) - 13:55, 24 January 2022
• Drilling a well
  | topg = 12 ...s that sit on the sea floor. In moderately deep water (more than 45 m [150 ft] deep), a floating or semisubmersible rig is used. The semisubmersible rig
  15 KB (2,385 words) - 15:05, 1 August 2016
• Land rigs
  ...he ''kelly bushing'' (9) and kelly. The ''kelly'' is a square or hexagonal length of pipe that is screwed on the drill pipe and used to convey the rotary mov ...The drill line can be strung in multiples for a total of of 4,6, 8, 10, or 12 lines. More lines means more lifting capacity but a slower running speed. T
  12 KB (2,020 words) - 16:19, 20 January 2022
• Well types
  ...irections in rotary steerable drilling]: Oil-field Review, Spring 2000, v. 12, no. 1, p. 18-29.</ref> ...of keeping it substantially within the reservoir target until the desired length of horizontal penetration is reached ([[:file:M91Figure161.JPG|Figure 1]]).
  24 KB (3,753 words) - 19:33, 3 March 2016
• Formation evaluation of naturally fractured reservoirs
  ...ool operates with transmitter-receiving spacings of 8, 10, or [[length::12 ft]] and emits acoustic energy that propagates radially through the formation ...in gauge. Unfortunately, the correction detector diameter is only about [[length::2 in.]], and it can easily miss the fractures in more than 90% of the bore
  9 KB (1,380 words) - 17:25, 18 January 2022

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