Category: Oil and Gas business

A heavy, thick-walled steel pipe used in rotary drilling to turn the drill bit and to provide a conduit for the drilling mud.

Delek Drilling is a limited partnership dealing in oil and gas exploration and production. Overseas operations are carried out by subsidiaries of Delek Energy Systems (DES) which concentrate mainly on the following areas of operations: (1) Delek Energy (Vietnam) focuses on oil and gas exploration in Vietnam (in July 2009 Delek Drilling sold its equity in its W12 Block in Vietnam to its partners Premier Oil; (2) On February 11, 2008, DES closed the acquisition of 100% of the capital of Elk Resources, which is a private company registered in the U.S., which produces and sells oil and gas, develops existing oil and gas assets and engages in low-risk oil and gas exploration; (3) DES owns 83.49% of the rights in AriesOne; (4) 29.14% of the capital of Matra Petroleum which owns the Sokolovskoe oil discovery in Russia; (5) 25.12% of the capital of Viking Oil and Gas International Ltd. (“VOGIL”), a private company which owns two oil tankers. Delek International also holds 1.45% of the issued and paid up capital of Nexus Energy a public company for oil and gas exploration and production in Australia. It should be noted that a wholly-owned subsidiary of VOGIL holds another approximately 13% of the shares of Nexus. Delek Energy (CEO Gideon Tadmor) holds directly 49.8% of Delek Drilling and 38.1% of Avner. In December 2009, the Pisgot Investment House became a stakeholder in Delek Energy after it purchased 259 thousand shares at a price of 913.5 shekels a share so that they increased their holding in Delek Energy to 5.17%

Horizontal and directional drilling are other methods of increasing a well’s productivity while reducing the environmental footprint of an oil and gas operation. New technologies enable us to drill laterally or horizontally beneath the surface, as opposed to vertically, allowing for a wider range of possible well configurations. It is the intentional deviation of a wellbore from the path it would naturally take

Costs incurred to produce the proved reserves of oil and/or gas and to provide facilities for extracting, treating, gathering, and storing the oil and gas

Moisture and hydrocarbon dew point are not easy parameters to measure, due to numerous factors including gas composition, contaminants, additives, high pressures, presence of corrosive compounds and other factors. It is an important measurement however since any moisture contained in the gas does not burn, it reduces the effective calorific value of the gas and therefore excess moisture reduces the value of the gas to any buyer. However, it is expensive to remove and therefore there must be a balance between the cost of removal and the reduced value if the moisture is left in the gas. Secondly, moisture in gas pipelines can cause corrosion and potential leakage. Thirdly, at the low pressure consumer end the moisture content must be low enough to avoid any condensation formation (as ice) at low winter ambient temperatures, which would lead to pipe fractures and dangerous leaks should such conditions arise. Hydrocarbon dew point is a primary measure of the quality of natural gas for most operating companies. The hydrocarbon dew-point temperature indicates the temperature at which the heavy hydrocarbon components will start to condense out of the gaseous phase, at a given pipeline pressure. Therefore, a higher hydrocarbon dew point normally indicates a higher proportion of heavy hydrocarbon components. Excess moisture in a high pressure natural gas pipeline can combine with hydrocarbon compounds to form an emulsion sludge – known as hydrate formation. This hydrate formation can be extremely disruptive, causing pipeline blockage.

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The removal of sulfur from petroleum oil or gases. Uses mostly heat and hydrogen

A measurement of the force of a fluid per unit area (measured in pounds per square inch) subtracted from a higher measurement of fluid force per unit area. This comparison could be made for instance between the pressures outside and inside a pipeline, in a pressure vessel, before and after an obstruction in a flow path or between two points along any fluid path, such as two points along the inside of a pipe or across a packer. It could also be the change in force per unit area between the reservoir pore pressure and the wellbore fluid pressure. If this measurement becomes negative in value (i.e. the reservoir pressure is greater than the wellbore fluid pressure) then a flow of reservoir fluids into the wellbore can result

The departure terminal is the start of the pipeline. It contains gas storage and valve facilities, including scraper launch and outlet flowmeter systems, to send the material (oil/gas) through the pipeline system.