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* A = cross-sectional area of the plug face, cm² The diagram of a plug in [[:file:predicting-reservoir-system-quality-and-performance_fig9-24.png|

;BP:bridge plug ;CIBP:cast iron bridge plug

...analysis can be divided into several different types: (1) conventional or plug analysis, (2) whole core analysis, and (3) sidewall core analysis.<ref name ===Conventional or plug analysis===

...Some elements, such as barium, are important because they precipitate and plug pores. Others such as iodine and bromine may be economically profitable to ...n water is filtered because it must be free of suspended matter that might plug the rock pores or coat the faces of the grains. This matter might be bacter

...on measured by the bulk density tool relative to that obtained from a core plug. ...3 in.]] long, the log measures almost 400 times the volume measured by the plug.

...ad, and tungsten. After the explosion it turns into powder. Thus, it won’t plug the perforation hole. 42֯ is the optimum angle that would affect the lengt * Port plug guns: This kind is used for deep penetration with a density of four shots p

* Workovers are normally required to temporarily abandon or to plug and abandon a well. Operations may include squeeze cementing, setting plugs ...file:workovers_fig4.png|Figure 4]]), a cement plug, or a mechanical bridge plug, and the zone of interest will be perforated and stimulated. Appropriate ou

...9r54 /> and general industry opinions suggest oil or gas migration through plug-size samples occurs at nonwetting phase saturations of about 10% (4-17%), i ...(Alan Byrnes, personal communication, 1995) have observed breakthrough in plug samples at highly variable saturations—sometimes more than 50%.

...amond drilling plug can be dropped into place to drill ahead. The drilling plug may also be retrieved by wireline for inspection or to resume coring. Durin

[[file:core-orientation_fig3.png|thumb|300px|{{figure number|3}}Paleomagnetic plug sample.]] Paleomagnetic core orientation requires that a number of 1-in.-diameter plug samples be collected from the core at the surface ([[:file:core-orientation

...measured in the laboratory by injecting mercury under pressure into a core plug. The mercury is a nonwetting phase, which replicates the behavior of hydroc

...determine the extent of damage and is an excellent aid to picking analysis plug points. Based on experience, the following steps are recommended to prevent

...ndoned channel, a second well was drilled on the opposite site of the clay plug. A full oil column was found in the new well, unaffected by production from ...If vertical connectivity is effective between incised point bars, the clay plug obstruction can be bypassed above and below. If no effective vertical commu

...nown hazards from poisonous gas exist, air lines are installed and workers plug their individual air hoses into the manifold system.

..., zone A produces water, while the zones above it are all gas producers. A plug set between zones A and B will be effective at eliminating the water produc

...ng requirements; limitations on expenditures to drill, deepen, rework, and plug back; and other operations

...separate into two phases: solid and liquid. The solid phase will pack and plug the wellbore, necessitating remedial drilling.

...wnhole chemical treatments do not react with the rock or the pore fluid to plug up the pore space and impair productivity. ...l saturation, grain density, and sometimes a brief description of the core plug lithology (Table 1). A listing will be provided on a foot by foot basis (or

...elates to pores and sand grains, macroscopic; relates to conventional core-plug scale, megascopic relates to the scale of grid-blocks in simulation models,

...ill flow into the perforations. If mud is used, the solids in the mud will plug the perforations; therefore, clean wellbore fluids are preferred when perfo

.... The water-producing perforations can be shut off by running an isolation plug in the well.

...using swelling and [[hydrocarbon migration|migration]] of clays, which may plug the pore throats. Even a little water in the hole can kill a low pressure p

...provide the best information on lithofacies and stratification sequences, plug or whole core [[porosity]], [[Permeability|permeability]], and [[Water satu

...unt of gas lift gas or electricity to each well based on its productivity. Plug backs can be simulated by automatically recompleting producing grid blocks

...red core. The effect of invasion on fluid saturations is measured using [["plug and donut"]] analysis.

...fracturing fluid to form a filter cake on the face of the fracture and to plug the [[porosity]] and permeability of the face of the fracture.

...measured in the laboratory by injecting mercury under pressure into a core plug. The mercury is a nonwetting phase, which replicates the behavior of hydroc

...quired by injecting mercury into an evacuated, cleaned, and extracted core plug. Mercury injection pressure is increased in a stepwise manner, and the perc

...s to isolate water-producing perforations in production wells by setting a plug in the well opposite one of these shale barriers.

...producers. As a result, operators work diligently to locate and properly plug old wells, before they initiate a hydraulic fracturing operation.

Use of plug ends from homogeneous horizontal core analysis plugs for thin section, XRD,

...ype, fluid/proppant ratio, injection rate, treatment pressure, choke size, plug and perf versus sliding sleeves, and well spacing. All these factors influe

In the pilot phase, general industry practice consists in a plug and perf completion technique with: 1500–2000 m lateral drain, 15–20 fr