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• Cased hole tools
  ...ion and estimates ''V''_sh || Affected by radioactive scale near perforations ...ations. These salts will normally dominate the gamma ray response near the perforations, making the gamma ray useless in those intervals for both correlation to op
  10 KB (1,427 words) - 16:26, 18 January 2022
• Perforation design
  [[file:UreigaAlmandiFigure9.jpg|thumb|200px|{{figure number|9}}Effects of perforations.]] ...the undamaged rock formation. The picture on the left shows the effects of perforations on the rock formation.
  12 KB (1,786 words) - 21:02, 21 April 2022
• Well completion
  The major purpose of perforations is to provide effective flow communication between the wellbore and the res ...an casing guns, smaller jet charges must be used; therefore, the resulting perforations are smaller in diameter and length, compared to a casing gun.
  19 KB (2,910 words) - 21:06, 18 January 2022
• Production problems
  ...cur when a wellbore only penetrates a portion of the formation or when the perforations are placed only in the oil zone ([[:file:production-problems_fig1.png|Figur ...the well must be deepened to expose all of the productive interval or more perforations must be added to expose additional reservoir to flow. [[:file:production-pr
  16 KB (2,540 words) - 18:41, 20 January 2022
• Production logging
  ...the well sketch. The highest velocity and flow rate are recorded above the perforations, while zero flow is detected in the lowest interval. By measurement of the
  12 KB (1,726 words) - 16:48, 20 January 2022
• Artificial lift
  ...n the tubing string. The tubing string is set in a packer above the casing perforations ([[:file:artificial-lift_fig2.png|Figure 2]]). Gas is normally injected dow
  7 KB (1,094 words) - 20:47, 19 January 2022
• Pressure transient testing
  ...stabilized pressure. Then place the pressure measuring device as near the perforations as possible. Flow the well at a strictly constant rate (control with a vari ...approximately constant. Then place a pressure measuring device as near the perforations as possible several hours before shut-in. Shut the well in and let the pres
  15 KB (2,314 words) - 17:45, 21 January 2022
• Petrophysical analysis of Sorrento field wells
  ...6 m³ oil and 8,500 m³gas per day) with no water from perforations in these flow units and by a bulk-volume-water plot following. This lack of
  7 KB (956 words) - 17:24, 11 April 2022
• Deep-water marine reservoirs
  ...deep-water reservoirs with extensive shales is to isolate water-producing perforations in production wells by setting a plug in the well opposite one of these sha
  20 KB (2,850 words) - 15:33, 15 January 2024
• Types of completions
  ...ded into three categories: open hole completions, liner completions, and [[perforations|perforated]] casing completions. In most wells, conventional single perfora
  13 KB (1,944 words) - 19:56, 18 January 2022
• Workovers
  ...reperforating, perforating additional intervals, and plugging off unwanted perforations (because of high gas or water production).
  12 KB (1,834 words) - 15:25, 24 January 2022
• Production testing
  ...able assumption. If a well has been damaged by [[drilling fluid]]s and the perforations have not been broken down, a skin factor of +2 to +5 (or more) is appropria
  14 KB (2,165 words) - 18:42, 20 January 2022
• Drilling a well
  ...within the tubing, and the production rate will fall. The water-producing perforations can be shut off by running an isolation plug in the well.
  15 KB (2,385 words) - 15:05, 1 August 2016
• Fluid flow fundamentals
  ...adjacent to the wellbore (formation damage), and flow restrictions in the perforations.
  20 KB (3,155 words) - 21:20, 19 January 2022
• Rock-water reaction
  ...rate slightly under-balanced (1000 psi) Increase well rate slowly Maximize perforations per ft Select rate less than critical velocity Use clay stabilizer || Prefl
  17 KB (2,356 words) - 19:24, 19 January 2022
• Rock-water reaction: formation damage
  ...rate slightly under-balanced (1000 psi) Increase well rate slowly Maximize perforations per ft Select rate less than critical velocity Use clay stabilizer || Prefl
  17 KB (2,380 words) - 18:23, 21 January 2022
• Quick-look lithology from logs
  ...ing zones''. As with natural fractures, uranium may precipitate on flowing perforations, so a spectral gamma ray log run after years of production may show which c
  25 KB (3,637 words) - 19:39, 18 January 2022
• In-situ stress characterization and applications
  ...ontal stress orientations is also important for sand avoidance in oriented perforations. In unconsolidated sand reservoirs, it is preferred to perforate in the dir
  28 KB (4,031 words) - 15:49, 28 November 2022
• Data: sources
  ...alyzed to determine which perforated intervals are sourcing the water. The perforations can then be isolated to restore the well to dry oil production (Smolen, 199
  43 KB (6,686 words) - 13:44, 18 March 2019
• Shale-oil resource systems
  ...hoa Parish, Louisiana, produced more than 3180 m3 (20,000 bbl) of oil from perforations in the TMS between 3375 and 3549 m (11,073–11,644 ft).<ref name=Jhn>John,
  97 KB (14,873 words) - 19:53, 11 January 2024

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