Related Oil & Gas Terms

• Conductor casing

  Generally, the first string of casing in a well. it may be lowered into a hole drilled into the formations near the surface and cemented in place; or it may be driven into the ground by a special pile drive (in such cases, it is sometimes called drive pipe); or it may be jetted into...

• Casing

  1. steel pipe placed in an oil or gas well as drilling progresses to prevent the wall of the hole from caving in during drilling, to prevent seepage of fluids, and to provide a means of extracting petroleum if the well is productive. 2. large-diameter pipe lowered into an openhole and cemented in place. the well...

• Multiple completion

  An arrangement for producing a well in which one wellbore penetrates two or more petroleum-bearing formations. in one type, multiple tubing strings are suspended side by side in the production casing string, each a different length and each packed to prevent the commingling of different reservoir fluids. each reservoir is then produced through its own...

• Tubingless completion

  A method of producing a well in which only production casing is set through the pay zone, with no tubing or inner production string used to bring formation fluids to the surface. this type of completion has its best application in low-pressure, dry-gas reservoirs....

• Casinghead

  A heavy, flanged steel fitting connected to the first string of casing. it provides a housing for slips and packing assemblies, allows suspension of intermediate and production strings of casing, and supplies the means for the annulus to be sealed off. also called a spool....