In the oil and gas industry, the process of beginning to drill a well. Initially a larger drill bit is used to drill a surface hole, which is lined with casing and cement to protect groundwater. After the surface hole is completed, the main drill bit is inserted and the well is drilled to the total depth.

Can also be referred to as “spudding in”.

Drilling for oil and gas is a highly complex task involving sophisticated techniques and machinery. It often costs hundreds of thousands of dollars to drill even a simple well. More difficult wells can cost millions of dollars. The most expensive wells are often found offshore, where high-end drilling platforms can cost over $500,000 per day in times of peak demand.

Investment dictionary. . 2012.

Look at other dictionaries:

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  • Spud — (sp[u^]d), n. [Cf. Dan. spyd a spear.] 1. A sharp, narrow spade, usually with a long handle, used by farmers for digging up large rooted weeds; a similarly shaped implement used for various purposes. [1913 Webster] My spud these nettles from the… …   The Collaborative International Dictionary of English

  • spud — /spud/, n., v., spudded, spudding. n. 1. Informal. a potato. 2. a spadelike instrument, esp. one with a narrow blade, as for digging up or cutting the roots of weeds. 3. a chisellike tool for removing bark. 4. a pointed leg or stake for staying… …   Universalium

  • spud — [spʌd] n [Date: 1800 1900; Origin: spud small spade (17 20 centuries)] informal a ↑potato …   Dictionary of contemporary English

  • spud — ► NOUN 1) informal a potato. 2) a small, narrow spade for cutting the roots of weeds. ► VERB (spudded, spudding) 1) dig up or cut (weeds) with a spud. 2) make the initial drilling for (an oil well) …   English terms dictionary

  • spud — [ spʌd ] noun count MAINLY BRITISH INFORMAL a potato …   Usage of the words and phrases in modern English

  • spud — mid 15c., small or poor knife, of uncertain origin probably related to Dan. spyd, O.N. spjot spear, Ger. Spiess spear, lance ). Meaning spade is from 1660s; sense of short or stumpy person or thing is from 1680s; that of potato is first recorded… …   Etymology dictionary

  • spud|dy — «SPUHD ee», adjective, di|er, di|est. short and fat or thick: »spuddy hands …   Useful english dictionary

  • spud — [spad] 1. n. a potato. □ I’d like a few more spuds. □ Mashed spuds are the best of all. 2. n. vodka. (Presumed to be made from potatoes.) □ How about a glass of spud? □ …   Dictionary of American slang and colloquial expressions

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