- 行业: Oil & gas
- Number of terms: 8814
- Number of blossaries: 0
- Company Profile:
Ухудшения металлических компонентов, в результате контакта с газом или раствор, содержащие двуокись углерода.
Industry:Oil & gas
The deterioration of metal due to contact with carbon dioxide or similar corrosive agents, but excluding hydrogen sulfide (H<sub>2</sub>S). Sweet corrosion typically results in pitting or material loss and occurs where steel is exposed to carbon dioxide and moisture.
Industry:Oil & gas
The determination of the location of a leak in a pipeline. In onshore operations, this can be done by external detection or by using material balance leak-detection systems. In offshore operations, the task is more difficult because of the lack of inlet flow-rate measurements and the considerable solubility of natural gas in seawater at high pressures and low temperatures (seafloor level). <br><br>In deepwater operations with multiphase flow, indications of a leak may not be present at the ocean surface or it could be considerably displaced from the site of origination. In these circumstances, an energy-balance technique based on the changes in frictional losses through the pipeline is a powerful tool.
Industry:Oil & gas
Глубина которой давления корректируются для корректировки различий в высотах, на которых давление измерения производятся в различных скважин или в разное время.
Industry:Oil & gas
The collective term for substances added to drilling fluids when drilling fluids are being lost to the formations downhole. Commonly used lost-circulation materials include are fibrous (cedar bark, shredded cane stalks, mineral fiber and hair), flaky (mica flakes and pieces of plastic or cellophane sheeting) or granular (ground and sized limestone or marble, wood, nut hulls, Formica, corncobs and cotton hulls). Laymen have likened lost-circulation materials to the "fix-a-flat" materials for repair of automobile tires.
Industry:Oil & gas
The closeness of the agreement between the result of the measurement and the conventional true value of the quantity. Accuracy should not be confused with precision. (ISO)<br><br>Core measurements have well-defined calibration techniques and standards. Logging measurements are characterized during tool design and construction, and calibrated regularly to some standard. The quoted accuracy of a log then depends on the initial characterization, the reproducibility of the standard, and the stability of the measurement between calibrations and under downhole conditions. The actual accuracy also depends on the equipment performing and being operated to specification.
Industry:Oil & gas
The closeness of agreement between the results obtained by applying a measurement procedure several times on identical materials and under prescribed measurement conditions. The smaller the random part of experimental error, the more precise the measurement procedure. (ISO)<br><br>In logging, the term usually describes the repeatability of a statistical measurement, such as a nuclear log. The precision must then refer to a particular set of conditions, for example, the speed of logging and the formation properties.
Industry:Oil & gas
The closeness of agreement between individual results obtained in the normal and correct operation of the same method on identical test material, but under different test conditions (such as different operators, different apparatus, different laboratories). (ISO)<br><br>The reproducibility of core and log measurements can be checked properly in the laboratory. However, it is difficult to check the reproducibility of downhole log measurements because of the problem of ensuring that the same test material is used, in other words that the same volume of formation is measured each time, or that the formation fluids have not changed.
Industry:Oil & gas
The closeness of agreement between independent results obtained in the normal and correct operation of the same method on identical test material, in a short space of time, and under the same test conditions (such as the same operator, same apparatus, same laboratory). (ISO)<br><br>The repeatability of core and log measurements can be checked properly in the laboratory. The repeatability of a downhole log is checked by recording a repeat section (or repeat stations for stationary measurements). The term repeatability is used even though it is not possible to ensure that the same test material is used. On two separate runs, the tool may not take the same path in the borehole, and therefore may not measure the same volume of formation.
Industry:Oil & gas
Изменения в масло вода контакт или газ масло контактные профили в результате сокращения давления во время производства. Управления происходит в вертикальные или слегка наклонно-направленных скважин и зависит от характеристик участвующих жидкости и соотношение горизонтального и вертикального проницаемость.
Industry:Oil & gas
