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• True resistivity determination
  ==How invasion affects r_t measurement== ...}}Resistivity profiles of formations with fresh and saltwater mud filtrate invasion.]]
  3 KB (427 words) - 16:16, 5 April 2022
• Techsteq Solution: Virus analysis and elimination
  Custom security settings to prevent the invasion of nasty viruses.
  1 KB (216 words) - 08:11, 14 December 2019
• Archie equation
  * R_t = true resistivity of the formation, corrected for invasion, borehole, thin bed, and other effects ...e derived from deep resistivity log such as RILD or RLLD || Beds are thin, invasion occurred or borehole has washouts || Use chartbook corrections
  5 KB (703 words) - 13:52, 5 April 2022
• Petroleum source rock formation
  ...h reflect no sediment-churning bioturbation. Bioturbation records sediment invasion mainly by animals grazing on hydrogen-ri h sedimentary organic matter.
  2 KB (296 words) - 17:35, 13 April 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
• Core alteration and preservation
  * Filtrate invasion ===Filtrate invasion===
  20 KB (2,971 words) - 15:46, 19 January 2022
• Measurement while drilling
  ..., the effects of invasion fluids are reduced. By minimizing the effects of invasion, a more reliable evaluation of critical formation properties can be achieve
  8 KB (1,083 words) - 21:18, 19 January 2022
• Waterflooding
  ..._R) is a product of displacement efficiency (''E''_D), invasion or vertical sweep efficiency (''E''_V) and the pattern or areal s * ''E''_V = vertical or invasion efficiency (fraction of vertical reservoir section contacted by injection f
  10 KB (1,468 words) - 18:23, 21 January 2022
• Pore system shapes
  * R_t = true resistivity of the formation, corrected for invasion, borehole, thin bed, and other effects
  4 KB (528 words) - 13:53, 4 April 2022
• Formation evaluation of naturally fractured reservoirs
  ...ves one and three or curves two and four. This type of response depends on invasion of the fracture by a conductive fluid. A two-directional caliper run with t ...f an 8-in.-diameter borehole. Obtaining a good electrical image depends on invasion of the [[fracture]] by a fluid of relatively low resistivity. (For more on
  9 KB (1,380 words) - 17:25, 18 January 2022
• Borehole gravity
  ...nuclear tools: casing, poor cement bonding, rugosity, washouts, and fluid invasion. Another advantage is the fundamental simplicity of the relationships among ...unhindered by casing, poor hole conditions, and all but the deepest fluid invasion. The BHGM measurement samples a large volume of rock, which provides a dens
  10 KB (1,517 words) - 15:54, 20 January 2022
• Overview of routine core analysis
  ...ore do not suffer from surface plugging, and the effects of drilling fines invasion is minimized.<ref name=pt05r90 />
  14 KB (2,121 words) - 21:16, 19 January 2022
• Formation fluid pressure from repeat formation testers
  ...s to pick permeable zones for formation pressure measurements. Look for an invasion profile.
  6 KB (849 words) - 17:55, 17 February 2022
• Relative permeability
  ...b> ≈ 0). The '''imbibition curve''' relates to performance due to filtrate invasion from water injection or flushing from natural water drive.
  9 KB (1,351 words) - 13:31, 5 April 2022
• Wireline formation testers
  ...The larger samples can range from 1 to 10 gal or more. Due to mud filtrate invasion, a large fraction (if not all) of the retrieved fluid may be mud filtrate.
  10 KB (1,446 words) - 17:42, 18 January 2022
• Perforation design
  ...ial penetration damage. One of the reasons that could cause skin damage is invasion caused by the mud filtrate and cement fluid loss. To improve the productivi
  12 KB (1,786 words) - 21:02, 21 April 2022
• Water resistivity determination
  ...e minerals in the water-bearing zone, that the zone is clean, and that the invasion is shallow enough for resistivity tools to be unaffected by it. This method
  13 KB (2,077 words) - 17:26, 18 January 2022
• Conventional coring
  ...use a low fluid loss drilling fluid, and when possible, employ the new low-invasion coring bit technology to reduce core flushing.
  13 KB (1,885 words) - 20:49, 19 January 2022
• Preprocessing of logging data
  ...=pt04r4 /> Also, it is possible that not performing all corrections (e.g., invasion correction without borehole corrections) may be worse than making no correc
  13 KB (2,094 words) - 17:42, 18 January 2022
• Show evaluation
  ...orosity, even relatively small volumes of filtrate loss may result in deep invasion profiles. This causes a zone with a good gas show when drilled to recover o
  18 KB (2,670 words) - 18:21, 21 January 2022

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