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Perforating Oil and Gas Wells

The act of blasting holes through steel casing, cement and formation rock—happens in an instant, and yet, the long-term viability and profitability of most oil and gas assets depend on it. Perforating guns carry explosive shaped charges downhole, where they are detonated to create tunnels that act as conduits through which reservoir fluids flow from the formation, into the wellbore and up to the surface. Purpose of Perforating: The productivity of a given reservoir in primarily dependent on the near wellbore pressure drop. This is governed by drilling damage and perforation parameters. Successful stimulation and sand control operations are strongly dependent on perforation parameters. Although technology is available to insure good perforating in most wells, unsatisfactory perforating tends to be the rule in many areas. The three most prevalent causes for poor perforating probably are: 1. A lack of understanding of the requirements for optimum perforating. 2. Inadequate control of gun clearance ,particularly with through tubing guns. 3. The rather widespread practice of awarding perforating jobs on the basis of price, rather than job quality #oilwell #oilandgas #drilling #oil #oilfield #oilandgasindustry #petroleum #offshore #oilindustry #gaswell #gas #schlumberger