borehole en
51Earth and Space Sciences — ▪ 1996 Introduction GEOLOGY AND GEOCHEMISTRY In 1995 significant developments took place in the realm of geologic mapping, which provides the foundation for the presentation and comparison of data in the Earth sciences. The most important… …
52Radioactive waste — 2007 ISO radioactivity danger logo, designed in part for long term radioactive waste depositories which might survive into a far future time in which all knowledge of the meaning of present common radiation danger symbols and signs has been lost… …
53Oil well — The pumpjack, such as this one located south of Midland, Texas, is a common sight in West Texas. An oil well is a general term for any boring through the earth s surface that is designed to find and acquire petroleum oil hydrocarbons. Usually… …
54Electric Line — The term wireline usually refers to a cabling technology used by operators of oil and gas wells to lower equipment or measurement devices into the well for the purposes of well intervention and reservoir evaluation. Braided line can contain an… …
55Abiogenic petroleum origin — is a largely abandoned hypothesis that was proposed as an alternative to theory of biological petroleum origin. It was relatively popular in the past, but it went largely forgotten at the end of the 20th century after it failed to predict the… …
56Well logging — Gamma ray logging Spontaneous potential logging Resistivity logging Density logging Sonic logging Caliper logging Mud logging LWD/MWD v · …
57Mud engineer — A mud engineer (correctly called a Drilling Fluids Engineer, but most often referred to as the Mud Man ) works on an oil well or gas well drilling rig, and is responsible ensuring the properties of the drilling fluid, also known as drilling mud,… …
58Zigong — (zh stpw | s=自贡 | t=自貢 | p=Zìgòng | w=Tzu kung), ancient name Ziliujing and Gongjing, is a prefecture level city and the third largest city in Sichuan Province, in southwest China. Zigong is located in the Sichuan Basin. Granted the recognition… …
59List of Statutory Instruments of the United Kingdom, 1989 — NOTOC This is a complete list of all 1534 Statutory Instruments published in the United Kingdom in the year 1989.1 100* Criminal Justice Act 1988 (Commencement No. 5) Order 1989 S.I. 1989/1 * Food Protection (Emergency Prohibitions) (Wales)… …
60Wireline Logging — consists of measuring and recording the physical properties of the rocks in oil wells. Logging consists of introducing sensors in a borehole via a wireline , an electromechanical cable. Power and control is provided to the sensors inside the… …
