Search results

Page title matches

• Analysis of mud weights
  #REDIRECT [[Pressure prediction: analysis of mud weights]]
  58 bytes (7 words) - 14:49, 10 May 2014
• Pressure prediction: analysis of mud weights
  ==Mud weight and pore pressure== ..._problems_with_overpressured_reservoirs|blows out]], the pressure from the mud is less than, but usually close to, pore pressure.
  4 KB (572 words) - 17:56, 17 February 2022

Page text matches

• Introduction to wellsite methods
  ==Mud and mudlogging==
  763 bytes (76 words) - 20:06, 16 January 2014
• Pressure prediction: analysis of mud weights
  ==Mud weight and pore pressure== ..._problems_with_overpressured_reservoirs|blows out]], the pressure from the mud is less than, but usually close to, pore pressure.
  4 KB (572 words) - 17:56, 17 February 2022
• Analysis of mud weights
  #REDIRECT [[Pressure prediction: analysis of mud weights]]
  58 bytes (7 words) - 14:49, 10 May 2014
• Pressure prediction: analysis of cuttings
  ...an normal. This case also applies to shale, so we don't have to wait for a mud kick from a permeable zone to anticipate significant overpressure. Cuttings ...re likely to take place in permeable zones where there is a finite flow of mud filtrate into the formation.
  5 KB (818 words) - 17:56, 17 February 2022
• Normal hydrostatic pressure
  ==Hydrostatic mud pressure== ...sure exerted by the mud column in a borehole at a given depth. Hydrostatic mud pressures are found on [[Drill stem testing|DST (drill-stem test)]] reports
  3 KB (480 words) - 13:47, 16 February 2022
• Suggested pages
  ** [[Mud drape]] ** [[Mud information - interpretation]]
  2 KB (215 words) - 20:43, 10 August 2015
• Bioturbation
  ...osity and permeability. For instance, burrows filled with sand grains in a mud or clay unit could be conduits for fluid flow if connected. Bioturbation ca
  907 bytes (132 words) - 21:42, 18 September 2014
• Formation fluid pressure from repeat formation testers
  * Screen plugging with material in drilling mud # Plot mud hydrostatic and formation pressure at the well site to recognize anomalies
  6 KB (849 words) - 17:55, 17 February 2022
• True resistivity determination
  ...gure number|1}}Resistivity profiles of formations with fresh and saltwater mud filtrate invasion.]] ...gure 1]] shows resistivity profiles of formations with fresh and saltwater mud filtrate invasion.
  3 KB (427 words) - 16:16, 5 April 2022
• Mudlogging: gas extraction and monitoring
  ...1.png|{{figure number|1}}Mud system.<ref name=pt03r51>Whittaker, A., 1991, Mud logging handbook: Englewood Cliffs, NJ, Prentice-Hall.</ref> ...umping and degassing of mud passing through the trap. Gas evolved from the mud is mixed with ambient air in the upper part of the trap and is then drawn t
  9 KB (1,327 words) - 15:28, 24 January 2022
• 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
• 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

View (previous 50 | next 50) (20 | 50 | 100 | 250 | 500)