03.08.2009
Room & Pillar is so named, because pillars of coal are left standing to help support the roof of the mine and is still common in underground coal mines
Baker Hughes has issued the rotary rig counts as a service to the petroleum industry since 1944, when Hughes Tool Company began weekly counts of US and Canadian drilling activity. Hughes initiated the monthly international rig count in 1975. The North American rig count is released weekly at noon central time on the last day of the work week. The international rig count is releases before the market opens on the fifth working day of each month. The Baker Hughes Rig Counts are an important business barometer for the drilling industry and its suppliers. When drilling rigs are active they consume products and services produced by the oil service industry. The active rig count acts as a leading indicator of demand for products used in drilling, completing, producing and processing hydrocarbons. Baker Hughes Rig Counts are published by major newspapers and trade publications, are referred to frequently by journalists, economists, security analysts and government officials, and are included in many industry statistical reports. Because they have been compiled consistently for 60 years, Baker Hughes Rig Counts also are useful in historical analysis of the industry.
A reverberatory furnace is a furnace that isolates the material being processed (bronze, aluminum, glass, lead, iron, copper ore and steel) from contact with the fuel, but not from contact with combustion gases. The term reverberation is used here in a generic sense of rebounding or reflecting, not in the acoustic sense of echoing.
The movement of coastline land-ward in response to a transgression. This can occur during a sea-level rise with low sediment flux. Retrogradational stacking patterns of parasequences refer to patterns in which facies become progressively more distal when traced upward vertically
This log measures the bulk resistivity (the reciprocal of conductivity) of the formation. Resistivity is defined as the degree to which a substance resists the flow of electric current. Resistivity is a function of porosity and pore fluid in a rock. Porous rock containing conductive fluid (such as saline water) will have low resistivity. A non-porous rock or hydrocarbon-bearing formation has high resistivity. This log is very useful for determining the type of fluids in formations and is frequently used as an indicator of formation lithology and grain size.
On occasion reprocessing of existing seismic lines or processed data is required in order to reinterpret a prospect or area. In addition, oil companies unwilling to initiate new seismic or drilling, may feel inclined to spend some dollars on reprocessing their existing data, maybe more than usual. Reprocessing is an economic way to update data already in the bank using the latest methods in a rapidly evolving technology, and there’s always a chance that the enhanced images may reveal fresh clues to finding extra reserves
This is an energy policy which aims to encourage investments in new renewable energy resources by regulating the share of renewables in power generation and requiring that a certain share of electricity generation stem from renewable energy. A renewable portfolio system relies on a market trade mechanism – a cap and trade system similar to that for carbon and thus differs to feed-in tariff. Under the renewable portfolio standards if an independent energy provider cannot provide the green energy, then the state utility has to step in to make up the deficit