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• 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
• Wellsite safety
  ...t be expected to break out or accumulate (e.g., bell nipple, shale shaker, mud mixer, and rig floor). ...pical confined spaces at a wellsite include the rig cellar, mud tanks, and mud pits.
  9 KB (1,411 words) - 15:10, 24 January 2022
• Taphonomy and provenance
  * Recognizing contamination by drilling mud or [[caving]]s
  3 KB (449 words) - 18:12, 31 January 2022
• Log interpretation: initial quick scan
  ...l stem tests]], [[Show evaluation|sample shows]], [[Mudlogging: the mudlog|mud-log analysis]], nearby production, etc., before making a decision to set pi
  4 KB (543 words) - 14:11, 21 August 2014
• Overview of routine core analysis
  ...when large solution voids are present or when the core is badly invaded by mud solids. ...thod is available to address the permeability reduction caused by drilling mud fines that have penetrated the pore system. These fines may cause whole cor
  14 KB (2,121 words) - 21:16, 19 January 2022
• Depositional trap regime
  ...platform reefs, atoll reefs, patch reefs, pinnacle reefs, reef mounds (or mud mounts), and carbonate banks.<ref name=JG1984 /> These terms can be used as | colspan = 5 | ''Mud mounds''; Depositional carbonate mounds consisting largely of clean lime [[
  10 KB (1,231 words) - 20:28, 4 January 2024
• Identifying depositional sequences from biostratigraphic data
  ...al at the sea floor that is part of the regionally extensive transgressive mud of the [[Holocene]]. The arrow on the seismic section, shown on Figure 4-19 ...on of abundant ''G. menardii'' with the regionally extensive transgressive mud of the Holocene provides local confirmation of the warm-water interglacial
  9 KB (1,143 words) - 14:57, 23 February 2022
• Drill stem testing
  ...xcessive damage by [[drilling fluid]]s and should be used in designing the mud program. The anticipated reservoir properties are used to design the test s The length of the test interval should be short so that less mud will be displaced from the rathole (the portion of the open hole below the
  26 KB (4,009 words) - 15:09, 24 January 2022
• Depositional environments
  ...teristics are the structure of stratified fine sands overlain by laminated mud. ...fluvial deposits are, they consist of sand and gravel grain size and also mud in floodplain deposits of meandering systems, and they have moderate to poo
  26 KB (3,851 words) - 20:38, 28 February 2019
• Core alteration and preservation
  During core acquisition and retrieval, the mud filtrate often invades the core. Invasion can displace over half of the nat ...y, pressure differential and relative permeability of the formation to the mud filtrate, and core diameter.<ref name=Basan_etal_1988 />
  20 KB (2,971 words) - 15:46, 19 January 2022
• Meandering fluvial reservoirs
  ...edded within varying volumes of mud ([[:file:M91FG173.JPG|Figure 2]]). The mud can make up 50% or more of the volume. Channel features, where they survive ...croform]]s found in meander belts include point bars, crevasse splays, and mud-rich channel plugs within a background of floodplain muds. [[Coal]]s are fo
  32 KB (4,727 words) - 21:03, 15 January 2024
• East Breaks hydrocarbon migration model
  ...ll where it is in close proximity to salt. Additionally, the A-29 borehole mud weight of [[weight::13.5 lb]] below [[depth::5,000 ft]] (1524 m) and [[weig ...East Breaks 160-161 field offsets the sea floor and locally has associated mud volcanoes along the fault scarp. Despite these observations of recent and/o
  10 KB (1,376 words) - 16:00, 23 March 2022
• Carbonate porosity formation and preservation
  How much influence does the original fabric of a carbonate rock (grains, mud, and pore space) have on with the pore space in the rock now? Which has mor
  5 KB (708 words) - 17:27, 5 December 2023
• Pinedale field
  ...ars) for wells drilled by QEP in Pinedale field. With improved drill bits, mud systems, and crew efficiency, drill times decreased by more than 80% betwee ...er-based mud, consistently trained and experienced crews, use of down-hole mud-motors and steerable assemblies, new slim-hole well designs, multiwell pad
  16 KB (2,521 words) - 17:13, 29 January 2016
• Haynesville and Bossier Shales (Upper Jurassic), East Texas and Northwest Louisiana
  ...me Louark sequence in the north and west. Several rivers supplied sand and mud from the northwest, north, and northeast into the basin. Haynesville/Bossie
  4 KB (628 words) - 23:05, 3 March 2022
• Types of wells
  ...ece of drill pipe bent to about 1–2deg angle, which is inserted behind the mud turbine and oriented from the surface along the planned direction for the w ...bination is used for coiled tubing drilling. The turbine is powered by the mud moving through it; the tubing itself does not rotate. The advantage of coil
  22 KB (3,567 words) - 17:20, 11 March 2019
• Cross-well electromagnetic tomography monitoring of fluid distribution
  ...an oil-based mud or a relatively low conductive mud, like freshwater-based mud.<ref name=Schon_2015>J. Schön, Basic Well Logging and Formation Evaluation
  18 KB (2,715 words) - 18:29, 8 February 2024
• Siliciclastic shorelines and barrier island reservoirs
  | Mud-filled interridge swales in strand-plain sandstones || || Can create barri ...west-oriented beach ridge macroforms are fairways for water ingress. Tidal mud flat deposits south of the field restrict water influx from this direction
  18 KB (2,607 words) - 15:33, 15 January 2024
• Well types
  ...e of drill pipe bent to about 1–2&deg; angle, which is inserted behind the mud turbine and oriented from the surface along the planned direction for the w ...bination is used for coiled tubing drilling. The turbine is powered by the mud moving through it; the tubing itself does not rotate. The advantage of coil
  24 KB (3,753 words) - 19:33, 3 March 2016
• Seal capacity of different rock types
  ...s. In the Gulf Coast basin, shorter oil columns are sealed by grainstones, mud-stones, and wackestones of the Smackover Formation and chalk.
  5 KB (760 words) - 20:55, 31 March 2022
• Petrophysical analysis of lithofacies
  #* Had mud log shows
  6 KB (763 words) - 18:53, 4 February 2022
• Vitrinite reflectance
  * Drilling mud additives
  7 KB (970 words) - 14:28, 10 February 2022
• Utilization of the industrial revolution 4.0 in oil and gas exploration
  ...arning models on PVT data at specific depth which then applied to Advanced Mud Gas data to predict reservoir fluid properties, specifically gas oil ratio
  21 KB (3,096 words) - 20:59, 21 April 2022
• Oil and condensate analysis
  ...leum composition and physical properties. In addition, samples of drilling mud, load and kill fluids, drilling additives, and wellsite fuel oils and lubri ...ate-analysis_fig4.png|{{figure number|4}}Gas chromatogram showing drilling mud contamination to a biodegraded oil.
  14 KB (2,013 words) - 16:48, 20 January 2022
• Quick-look lithology from logs
  * ''Mud type''. Water-based mud (with suitable salinity) is essential. Oil-filled or empty holes have nothi Well-designed modern mud systems can minimize washouts, making caliper logs less distinctive for lit
  25 KB (3,637 words) - 19:39, 18 January 2022
• Top seal ductility estimation
  ...ant but change with progressive burial as the top seal is converted from a mud to a rock.
  7 KB (1,000 words) - 15:22, 30 March 2022
• Mudstones
  ..., 303 p.</ref><ref>Potter, P. E., J. B. Maynard, and P. J. Depetris, 2005, Mud and mudstones: Introduction and overview: New York, Springer, 297 p.</ref>; ...Bentley, and K. M. Bohacs, 2010a, Wave-enhanced sediment-gravity flows and mud dispersal across continental shelves: Reappraising sediment transport proce
  16 KB (2,352 words) - 18:46, 4 December 2023
• Braided fluvial reservoirs
  ...ch mud is preserved in braided river systems under normal conditions. What mud there is, collects as bar tops or represents fragments of floodplain silts
  13 KB (1,859 words) - 21:29, 12 March 2019
• Core handling
  ...probably the most important and visible feature in wellsite core handling. Mud should be wiped off the core or inner barrel to get a good marking surface.
  7 KB (1,083 words) - 20:50, 19 January 2022
• Well completion
  ...fluids will flow into the perforations. If mud is used, the solids in the mud will plug the perforations; therefore, clean wellbore fluids are preferred
  19 KB (2,910 words) - 21:06, 18 January 2022
• Mudstone nomenclature
  ...<ref name=Pttr2005>Potter, P. E., J. B. Maynard, and P. J. Depetris, 2005, Mud and mudstones: Introduction and overview: Berlin, Springer-Verlag, 297 p.</ .... Bohacs, O. R. Lazar, and R. Jonk, 2010b, Advective sediment transport on mud-dominated continental shelves: Processes and products: AAPG Search and Disc
  58 KB (8,391 words) - 19:46, 20 February 2024
• Log analysis applications
  * Enter or modify run specific information (such as mud properties, bottom hole temperature, true depth, and service company). ...remove the effects of environmental conditions local to the tool (such as mud weight, temperature, and borehole salinity) and work with the most technica
  21 KB (3,142 words) - 16:20, 20 January 2022
• East Breaks trap formation
  ...sandstones completely bypassed [[Dip|updip]] areas subsequently filled by mud, providing both top seal and up dip [[lateral]] seal.<ref name=ch04r22 /><r
  7 KB (1,022 words) - 21:54, 22 March 2022
• Data: sources
  * mud logging data ==Mud logging data==
  43 KB (6,686 words) - 13:44, 18 March 2019
• Fishing
  * Displacing part of the mud with a lighter fluid to reduce hydrostatic pressure, which is particularly
  8 KB (1,156 words) - 21:19, 19 January 2022
• Oilfield water analysis
  ...lthough this water is usually contaminated with filtrate from the drilling mud. (For more details, see [[Drill stem testing]].) Additional sampling method
  7 KB (1,011 words) - 16:57, 20 January 2022
• Surface production equipment
  * Easily cleaned of sand and mud
  9 KB (1,343 words) - 18:42, 20 January 2022
• Stratigraphically complex fields
  * A variety of mud weights and types are needed to prevent formation damage in different produ
  8 KB (983 words) - 20:49, 19 January 2022
• Arecuna field
  ...of sandstone and shale, discrete sinuous sandstone-rich belts confined by mud-rich areas, and log-facies architecture are all consistent with deposition ...r forms that are typical of sandy, braided river systems. The well-defined mud-rich areas of this interval are characterized by uniformly serrate log pack
  16 KB (2,381 words) - 19:03, 11 March 2019
• Systems tracts and trap types
  Transgressive systems tracts step toward the basin margin, with mud-prone facies overlying most of the sand-prone deposits, providing good top
  9 KB (1,239 words) - 16:58, 24 February 2022
• Ellesmerian(!) petroleum system
  ...ine, shallow marine, basin-slope, and basin conglomerates, sandstones, and mud-stones.
  10 KB (1,241 words) - 20:11, 25 January 2022
• Relationship between porosity and permeability on fractured basement reservoir
  ...m. The average porosity of the reservoir (17%) obtained from neutron log. Mud loss is thought to occur when drilling these wells. Analysis of the pressur #* Saturation of mud filtrate in the washing zone are:
  29 KB (4,601 words) - 16:09, 12 April 2016
• Deltaic reservoirs
  Deltas are major sites of sand and mud deposition. They contain significant volumes of hydrocarbons worldwide ([[: ...nated delta || - || Low recoveries caused by complex geometry and numerous mud and silt baffles
  34 KB (4,776 words) - 18:18, 5 January 2024
• Identifying depositional sequences in seismic sections
  ...shelf-margin delta suggest that regionally extensive and uniform layers of mud occur above and below locally shingled clinoform packages. Couplets of thes
  10 KB (1,394 words) - 21:47, 22 February 2022
• Thin section analysis
  ...cimen or thin section. In Folk's scheme, the black pattern represents lime mud [http://www.britannica.com/EBchecked/topic/369508/matrix matrix], the lined ...recognize a spectrum of original textures that range from mostly carbonate mud (low energy environments) through mostly sand-sized or larger carbonate gra
  24 KB (3,264 words) - 15:09, 24 January 2022
• Lithofacies and environmental analysis of clastic depositional systems
  ...nally complex geometry of cross-cutting sands and gravels with subordinate mud-rich beds of varying thickness and dimension. Bar and channel deposits are ...quality of estuarine channel deposits also varies as a function of sand to mud ratio and degree of [[bioturbation]].
  38 KB (5,198 words) - 22:11, 15 January 2024
• Weyburn seal capacity
  ...lculate the potential oil column height that could be sealed by the porous mud-stone facies using maximum reasonable estimates for the above parameters. W
  10 KB (1,484 words) - 20:55, 4 December 2023
• Identifying sea level cycle phase with biostratigraphy
  ...supply of sand-rich sediment to the basinal slope area is rapidly cut off. Mud accumulates during this postsandstone interval, culminating with the overly
  11 KB (1,548 words) - 16:58, 24 February 2022
• Perforation design
  ...One of the reasons that could cause skin damage is invasion caused by the mud filtrate and cement fluid loss. To improve the productivity, the perforatio
  12 KB (1,786 words) - 21:02, 21 April 2022
• Pay determination
  * Ancillary data, including mud logs, drillers' logs, and [[show evaluation]]s
  13 KB (1,799 words) - 19:01, 20 January 2022
• East Breaks reservoir rock
  ...s compensation lobe switching as progressively younger deposits infill the mud-rich/sand-poor intralobe areas of the preceding lobe.
  13 KB (1,771 words) - 17:24, 5 December 2023
• Carbonate reservoir
  ...r example, Neumann and Land<ref>Neumann, A. C., and L. S. Land, 1975, Lime mud deposition and calcareous algae in the Bight of Abaco, Bahamas: A budget: J ...d by diagenetic cement. However, poor or nonreservoir facies such as tidal mud flats can be modified into reservoir rock by dolomitization. Diagenetic rea
  38 KB (5,571 words) - 15:31, 16 January 2024
• Sandstone sedimentology and stratigraphy
  ...upturing of mica and plastic [[deformation]] of ductile rock fragments and mud intraclasts. Interaction of meteoric water with sandstones resulted in the ...angement of the detrital fragments, plastic [[deformation]] of the ductile mud intraclasts to pseudo matrix as well as bending and squeezing of Biotite be
  27 KB (3,802 words) - 19:32, 9 January 2024
• Delta plain, subaqueous
  ...racks are often present upslope from the major scarp, and frequently small mud vents are associated with these scarps. ...ocky, disturbed debris and often abundant mud vents and volcanoes. Seaward mud nose scarps range in height from a few meters to more than 25 m. In plan vi
  60 KB (9,022 words) - 17:17, 21 March 2016
• Geological heterogeneities
  ...lity]], and [[Water saturation|fluid saturation]] (if [[oil-based drilling mud]] was used during coring). The use of [[Quick-look lithology from logs#Log
  17 KB (2,232 words) - 21:22, 19 January 2022
• Subsurface diagenesis and its relation with diagenetic trap on carbonate rocks reservoir
  ...n, so stylolite will be formed. Generally, stylolite will be found more in mud-supported rocks (Dickinson and Saller, 1995) than in grainstone and packsto
  16 KB (2,395 words) - 21:18, 9 January 2024
• Paleontology
  ..., and the FAD may be in older rocks due to contamination from the drilling mud.<ref name=pt05r129>Poag, C. W., 1977, Biostratigraphy in Gulf Coast petrole
  17 KB (2,331 words) - 20:11, 10 August 2016
• Rock-water reaction
  ...sed fluids Any water with inadequate concentration of cations || Oil-based mud Potassium Ammonium chloride Calcium chloride || Preflush with HCl and NH<su
  17 KB (2,356 words) - 19:24, 19 January 2022
• Rock-water reaction: formation damage
  ...sed fluids Any water with inadequate concentration of cations || Oil-based mud Potassium Ammonium chloride Calcium chloride || Preflush with HCl and NH<su
  17 KB (2,380 words) - 18:23, 21 January 2022
• Well log analysis for reservoir characterization
  ...y (without thermal effect), BHT is the bottom hole temperature, Rmf is the mud filtrate resistivity, SP is the spontaneous potential log reading, F is the
  25 KB (3,679 words) - 21:17, 13 March 2019
• Structurally complex reservoirs: evaluation
  ...faults. The sealing characteristics of faults can also be gauged from the mud weights used during drilling or the production data from the well after com
  20 KB (2,865 words) - 19:24, 19 January 2022
• Petroleum basins of Turkey
  ...d by Cretaceous and Miocene thrusting, fracturing was developed within the mud dominated carbonates. ...ities, but in the areas between rudist buildups the porosities are low and mud content increases. Upper Maestrichtian carbonates also act as a reservoir d
  52 KB (7,769 words) - 20:28, 18 January 2017
• Standard interpretation
  The SP can be an fair estimator of shale volume in areas where mud filtrate and formation water resistivities contrast.
  25 KB (3,776 words) - 19:53, 18 January 2022
• Geology workstation
  ...is log information, including curves or traces, logging parameters such as mud type and resistivity, and analysis parameters such as formation water resis
  19 KB (2,872 words) - 14:28, 20 January 2022
• Deep-water marine reservoirs
  Thin but laterally extensive mud blankets, either deposited from hemipelagic settling or the muddy tails of
  20 KB (2,850 words) - 15:33, 15 January 2024
• Dolomite and dolomitization: Implications for reservoir characterization
  ...olomite / microlite (crystal size <1 µm), dolosparite, dololutite (clay or mud size, <1/16 mm), dolosiltite (silt size, 1/16-1/256 mm) , dolarenite (sand ...zation intensity. (A) Dolomite (~10%) in micritic limestone. (B) Carbonate mud has been partially (50%) altered to dolomite. (C) Carbonates with 90% dolom
  38 KB (4,996 words) - 21:07, 21 April 2022
• Introduction to biosteering operation
  ...antity and quality of cuttings recovered on surface. Drillstring rotation, mud properties and ROP can all impact the hole condition negatively. Therefore,
  20 KB (2,916 words) - 21:04, 21 April 2022
• Barmer basin
  The overlying [[Dharvi Dungar Formation]] is a [[lacustrine]], mud-dominated sequence that is also a significant [[source rock]] (Farrimond et
  24 KB (3,528 words) - 22:50, 8 January 2019
• Hammerfest basin
  ...z-Garcia, C., T. Feseker, J. Mienert, and C. Berndt, 2009, The Håkon Mosby mud volcano: 330 000 years of focused fluid flow activity at the SW Barents Sea
  23 KB (3,382 words) - 18:40, 10 January 2019
• In-situ stress characterization and applications
  ...ction. The resulting wellbore tends to be more stable, thus requires lower mud weight and lower cost. Whereas, in a strike-slip or thrust fault system, th
  28 KB (4,031 words) - 15:49, 28 November 2022
• Iran petroleum systems
  ...verlain by Cambro-Ordovician fluviatile reddish cross-bedded sandstone and mud-stone, shallow marine [[shale]] and [[dolomite]], generally organic-lean, w
  27 KB (3,901 words) - 13:51, 26 January 2017
• West Texas Super Basin
  ...responds to the drilling depth that put oil into the drilling pits and had mud-log oil shows. (B) Structure map on top of the Wolfcamp Shale by Hanson<ref ...nly a little oil in the pits but the well flowed oil consistently, and the mud log showed a much thicker oil-saturated interval. Once open-hole logs were
  157 KB (23,278 words) - 18:36, 16 January 2024
• Appalachian Basin Marcellus gas play
  ...West Virginia, and reported high porosity (10–20%) and permeability (5–50 mud) in the Marcellus Shale and actually reported the Marcellus Shale to be the # A review of mud log data for Marcellus wells indicates large shows while drilling through t
  89 KB (13,415 words) - 19:16, 16 January 2024
• Vaca Muerta play
  ...sociation with deep (synrift) rooted faults and with igneous sills causing mud losses and creating strong mechanical interfaces that affect the efficiency
  77 KB (11,201 words) - 20:07, 15 January 2024
• Phanerozoic Tethys region
  ...by deposition of temperate bioclastic limestones and pelmatozoan-bryozoan mud-mounds, which overlie a very thick terrigenous succession of Early-Middle O
  79 KB (11,542 words) - 18:47, 19 July 2016
• Shale-gas resource systems
  ...their retention and storage capacity for petroleum was largely ignored and mud gas log responses noted with the somewhat derogatory shale-gas moniker. Bec
  73 KB (10,728 words) - 18:16, 11 January 2024
• Three-dimensional modeling of clinoforms in shallow-marine reservoirs
  ...in [[cross section]] is a function of modal [[grain size]], proportion of mud, and the depositional process regime at the shoreline. In sandy, fluvial-do
  113 KB (16,689 words) - 22:11, 15 January 2024
• Shale-oil resource systems
  ...oven will certainly impact the free oil content in Rock-Eval S1. Oil-based mud systems preclude the use of the Rock-Eval S1 and OSI.
  97 KB (14,873 words) - 19:53, 11 January 2024