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• Formation fluid pressure from drill stem tests
  ...ol and drillpipe string. Recovered volumes of oil, gas, water, or drilling mud are recorded. ...''' is the initial hydrostatic pressure (IHP), the pressure exerted by the mud column in the borehole at the depth where the recorder is located.
  6 KB (997 words) - 17:55, 17 February 2022
• Sampling for paleontology
  ...ragments of rock cut by the drill bit and circulated to the surface by the mud system). Often, a sample of the drill cuttings is collected for each joint * Lost-circulation material added to the mud system can so dilute the system that little or no formation material is con
  7 KB (1,051 words) - 18:08, 24 January 2022
• Preprocessing of logging data
  ...model used on each well and logging run. Collect all temperature data and mud properties. Determine the top and bottom of the valid logging measurements ...of environmental conditions (such as hole washouts or gas in the drilling mud) should also be deleted. This will result in data gaps, but these are prefe
  13 KB (2,094 words) - 17:42, 18 January 2022
• Measurement while drilling
  ...Downhole measurements recorded by the sensors are transmitted through the mud as positive or negative pressure pulses or as a continuous, fixed-frequency The mud telemetry signals are detected with pressure transducers in the standpipe.
  8 KB (1,083 words) - 21:18, 19 January 2022
• Shale tectonics
  ...intrusive injectites or [[diapir]]s or as extrusive eruptive sand blows or mud volcanoes has captured the public's imagination and given scientists the im ...these strata can be found as well as documentation on drilling into mobile mud-cored anticlinal features (diapirs) in southern Trinidad.
  17 KB (2,466 words) - 16:16, 10 January 2024
• Formation evaluation of naturally fractured reservoirs
  ...adially through the formation via the mud and back to the receiver via the mud. ...pip most likely corresponds to a streaming potential effect resulting from mud filtrate into the fractures.
  9 KB (1,380 words) - 17:25, 18 January 2022
• Methods for obtaining formation fluid pressures
  * Using the weight of drilling mud
  2 KB (295 words) - 17:54, 17 February 2022
• Sea level cycles and carbonate sequences
  ...he tops of supratidal flats during highstand conditions. The thin marl and mud-cracked laminites indicate little available accommodation space was availab
  7 KB (989 words) - 20:45, 6 April 2022
• Open hole tools
  ..._w , and indicate [[permeability]] || Does not work in oil-based mud and ''R''_mf and ''R''_w must contrast ...Identify lithology and well-to-well correlation || Does not work in barite mud, is a pad device, and uses a radioactive source
  23 KB (3,350 words) - 17:26, 18 January 2022
• Borehole gravity: uses, advantages, and disadvantages
  * Is unaffected by [[washout]]s, [[hole rugosity]], or [[mud invasion]] effects
  3 KB (351 words) - 15:11, 31 January 2022
• Offshore rigs
  ...ge surface area of the lower hull keeps the rig from sinking into the soft mud and provides a stable drilling platform. ...ed to the rig by a riser to allow circulation of [[Drilling fluid|drilling mud]].
  7 KB (1,016 words) - 16:56, 20 January 2022
• Carbonate diagenesis
  ...textures tend to have larger pore sizes than do [[Mud-supported carbonate|mud-supported]] textures. The textures have different geometries in different [ ...ion_fig2.png|Figure 2]]) is dominated by low-energy waters that allow lime mud to accumulate. [[Storm deposits and currents|Storms]], however, churn the s
  23 KB (3,026 words) - 20:48, 19 January 2022
• Pressure prediction: reconstructing burial history
  * [[Pressure prediction: analysis of mud weights]]
  3 KB (408 words) - 17:56, 17 February 2022
• Drilling a well
  ...it fails in this last action, the fluid in the formation will displace the mud up the hole. This is called a kick. Should this hazardous situation not be ...d of the drill pipe, rotates, cutting and crushing the rock underneath it. Mud passes out through the nozzles in the drill bit, cools the bit, and acts to
  15 KB (2,385 words) - 15:05, 1 August 2016
• Natural hydraulic fracturing example, North Sea
  ...eal (approximately [[depth::1300 ft]]). The pore pressure is inferred from mud weight and [[Wireline formation testers|repeat formation tester]] (RFT) mea
  3 KB (430 words) - 19:46, 30 March 2022
• Wellbore trajectory
  ...eerable bottom hole assembly, (b) Kicking off with a bent sub and straight mud motor.]] ...ck out of casing by milling a “window” and deflecting the wellbore using a mud motor.
  14 KB (2,167 words) - 20:46, 19 January 2022
• FWhitehurst sandbox
  * mud (drilling mud) http://www.glossary.oilfield.slb.com/en/Terms/m/mud.aspx * oil-based mud [[Drilling_fluid#Oil-based_muds|
  22 KB (3,024 words) - 21:42, 19 December 2014
• Critical elements application: Niobrara example
  * Drilling must be conducted with [[Analysis of mud weights|underbalanced mud]] or air to prevent fracture damage. The Niobrara is an [[Causes of underpr
  7 KB (962 words) - 16:03, 18 February 2022
• Production testing
  ...w valves, and one or two packers. The tool isolates the formation from the mud column in the annulus. When the tool is opened, reservoir fluid can flow in ...tem above the pressure gauges. The objective is to release the hydrostatic mud pressure and draw down the formation pressure only slightly. The first shut
  14 KB (2,165 words) - 18:42, 20 January 2022
• Density-neutron log porosity
  ...orehole—usually mud filtrate (use 1.0 for freshwater and 1.1 for saltwater mud) ...tbook. Use the appropriate crossplot for the log type (i.e., SNP, CNL) and mud type (fresh or salt).
  12 KB (1,763 words) - 16:18, 5 April 2022

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