- Отрасли: Oil & gas
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Связанные с любой аспект ведения журнала, который использует электрический кабель для снижения инструменты в скважины и для передачи данных. Проводные журнал отличается от измерения время бурения (MWD) и грязи протоколирования.
Industry:Oil & gas
Referring to the volume of liquid measured in the filtration tests performed according to API specifications, in units of cm<sup>3</sup>/30 minutes. Although applied to water mud, in which the liquid is truly water, the term is sometimes applied to oil mud, in which the liquid is oil.
Industry:Oil & gas
Ссылаясь на различные степени неспособность переместить или удалить бурильной колонны из скважины. С одной стороны это может быть возможность вращать трубу или опустить его обратно в ствол скважины, или он может ссылаться на невозможность вертикально перемещения бурильной колонны в скважине, хотя вращение возможно. С другой стороны он отражает неспособность двигаться бурильной колонны в любой форме. Обычно даже если состояние застрял начинается с возможностью ограниченного труба вращения или вертикального перемещения, он будет деградировать с невозможностью перемещения трубы на всех.
Industry:Oil & gas
Ссылаясь на поток из двух несмешивающихся жидкостей, нефти и воды, нефти и газа, или газа и воды.
Industry:Oil & gas
Ссылаясь на состояние, которое возникает, когда Келли весь путь вниз, поэтому бурение прогресс не может продолжаться. Должно быть соединение, которое имеет эффект повышения Келли вверх по длине новый совместный бурильной трубы добавил, поэтому бурение можно возобновить.
Industry:Oil & gas
Referring to the change in temperature observed when a gas expands while flowing through a restriction without any heat entering or leaving the system. The change may be positive or negative. For each gas, there is an inversion point that depends on temperature and pressure, below which it is cooled and above which it is heated. For example, for methane at 100<sup>o</sup>C (212<sup>o</sup>F), the inversion point occurs at about 500 atmospheres (7350 psi). The magnitude of the change of temperature with pressure depends on the Joule-Thomson coefficient for a particular gas. <br><br>The Joule-Thomson effect often causes a temperature decrease as gas flows through pores of a reservoir to the wellbore.
Industry:Oil & gas
Ссылаясь на openhole или без корпуса, как и босиком завершения или босиком drillstem тест.
Industry:Oil & gas
Referring to a log of porosity based on the effect of the formation on fast neutrons emitted by a source. Hydrogen has by far the biggest effect in slowing down and capturing neutrons. Since hydrogen is found mainly in the pore fluids, the neutron porosity log responds principally to porosity. However, the matrix and the type of fluid also have an effect. The log is calibrated to read the correct porosity assuming that the pores are filled with fresh water and for a given matrix (limestone, sandstone or dolomite). It is presented in units of porosity (vol/vol or p. U. ) for the matrix chosen. Older logs were presented in counts per second or API units. The depth of investigation is several inches, so that the log reads mainly in the flushed zone. <br><br>The neutron porosity log is strongly affected by clay and gas. Hydrogen occurs in clays and hydrated minerals as well as pore fluids. Gas has a low hydrogen density, so that gas zones have a very low apparent porosity. The measurement is based on either thermal or epithermal neutron detection. Thermal neutrons have about the same energy as the surrounding matter, typically less than 0. 4 eV, while epithermal neutrons have higher energy, between about 0. 4 and 10 eV. Being a statistical measurement, the precision is greatest at high count rates, which in this case occurs at low porosity. <br><br>Neutron porosity logs were introduced in the early 1940s. The first tools were known as neutron-gamma tools, since the detector measured the gamma rays emitted on capture. Neutron-neutron tools, using a thermal neutron detector were introduced in about 1950.
Industry:Oil & gas
