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• Tool table
  ...can affect signal transmission. Hole position affects signal strength and mud or borehole effects. Table 1 provides general operating limitations for the ...imum Hole Size (in.) || rowspan=2 | Maximum Hole Size (in.) || colspan=5 | Mud Type^b || colspan=3 | Preferred Hole Positions || rowspan=2 | Rec
  5 KB (544 words) - 16:27, 18 January 2022
• Glossary
  ;DM:drilling mud ;GCDM:gas cut drilling mud
  5 KB (840 words) - 13:51, 18 March 2019
• Spontaneous potential logs in water resistivity calculation
  ...(R_mf) at measured temperature, found on the log header. If only mud resistivity (R_m) is given, convert it to R_mf as expla ...-system-quality-and-performance_fig9-32.png|Figure 1]]) to the appropriate mud weight.
  6 KB (1,027 words) - 16:40, 5 April 2022
• Rate of penetration
  ===Mud weight (Pore Pressure)=== ...mall cuttings. Recognizing this relationship can aid in the selection of a mud weight to optimize drilling speed.
  7 KB (1,049 words) - 19:02, 20 January 2022
• Land rigs
  ...ttps://en.wikipedia.org/wiki/Rotary_table_(drilling_rig) rotary table] and mud pumps (34 in [[:file:Land rig example drawing.png|Figure 1]]) while drillin ....glossary.oilfield.slb.com/en/Terms/d/drilling_fluid.aspx drilling fluid] (mud) serves several functions on a rig, including cooling the bit, providing ho
  12 KB (2,020 words) - 16:19, 20 January 2022
• Mudlogging: the mudlog
  ...gure 2]] is an example of the layout and information content of a standard mud log. The general usage of the tracks (columns) on a mudlog are outlined her * Mud type and characteristics
  5 KB (752 words) - 15:39, 24 January 2022
• Drilling fluid
  An essential element of [[drilling a well]] is the drilling fluid or mud. Drilling fluids serve a number of functions: ...of any drilling fluid (or mud) system is that the interaction between the mud and the drilled formations must have a minimal effect on the mechanical pro
  13 KB (1,866 words) - 21:17, 19 January 2022
• Drilling problems
  * Increased mud volume Lost circulation is the complete or partial loss of drilling mud into a formation. The loss occurs when the total pressure exerted against t
  5 KB (732 words) - 21:18, 19 January 2022
• Mudlogging: drill cuttings analysis
  ...he cuttings from the mud. As returning mud travels across the screens, the mud fluid falls through the mesh, while solids travel to the end of the screen. Once the composite sample of drill cuttings is retrieved from the mud system, it is typically split or subdivided into a bulk, unwashed ''wet-cut
  10 KB (1,482 words) - 15:25, 24 January 2022
• Wellsite math
  | MW || Mud weight || lb/gal | D_t || Triplex mud pump output || bbl/stroke
  21 KB (3,142 words) - 15:10, 24 January 2022
• Wireline formation testers
  ...ade. Prior to activating the tool, the pressure gauge measures hydrostatic mud column pressure. Upon activation, the equalizing valve is shut and the pack ...set, the equalizing valve is open and the recorded pressure is hydrostatic mud column pressure. During the drawdown associated with the first pretest, the
  10 KB (1,446 words) - 17:42, 18 January 2022
• Pressure prediction: analysis of well-log and seismic data
  ...e of their low permeabilities, shales do not equilibrate pressure with the mud column in the well bore. Selecting only the purest shales minimizes the eff ...ormal pressure. If the variables are limited (weight on bit, rotary speed, mud properties, pump pressure, and bit type), the major remaining variable that
  5 KB (733 words) - 17:57, 17 February 2022
• Carbonate sedimentary rocks classification
  * Microcrystalline lime mud: matrix component of the rock < 4 μm in size. ...alline allochemical limestone that consists of > 10% allochems within lime mud.
  16 KB (1,986 words) - 14:09, 19 December 2023
• Well planning
  ** Lost circulation zones (e.g., fractures, excessive mud weight) * Mud logging
  6 KB (779 words) - 15:09, 24 January 2022
• Mudlogging: equipment, services, and personnel
  * ''Blender''—A blender agitates and grinds a discrete sample of mud and cuttings and extracts the released gas for measurement. * ''Pump rate counter''—A pump stroke counter is needed for each mud pump
  8 KB (1,031 words) - 15:27, 24 January 2022
• Show evaluation
  ...e drill string. This reading results from the liberation of gases from the mud system or from the recycling of previously encountered gases in the wellbor ...ondition to occur, the contributing formation must be underbalanced by the mud system at some point within the borehole.
  18 KB (2,670 words) - 18:21, 21 January 2022
• Interpreting hydrocarbon shows
  ! Show type || Core or cuttings || Mud log || Sw% || Log analysis || Dst || [[Wireline formation testers|Repeat fo ! Show type || Core or cuttings || Mud log || Sw% || Log analysis || Dst || Rft
  8 KB (1,130 words) - 17:09, 5 April 2022
• Hydrofractured seal leakage
  ...spx fracture gradient], and [[Pressure prediction: analysis of mud weights|mud weight]], well logs, or [[seismic data]] approximate the fluid pressure gra
  5 KB (679 words) - 17:11, 1 February 2022
• Water resistivity determination
  ..., as formation water samples, if available, are invariably contaminated by mud filtrate. ''R''_w is therefore usually calculated, and there are ...meable zones containing a more saline interstitial water than the drilling mud (''R''_w R_mf).
  13 KB (2,077 words) - 17:26, 18 January 2022
• Pressure detection
  ...ssure'' refers to pressures higher than normal that require heavy drilling mud to keep formation fluids from entering the borehole. Pressures lower than n ...control the formation pressure at the bit, the formation may rupture. The mud will then run out into a cavity of its own making.
  16 KB (2,450 words) - 21:42, 20 January 2022

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