"offset well

1. n. [Drilling]

An existing wellbore close to a proposed well that provides information for planning the proposed well. In planning development wells, there are usually numerous offsets, so a great deal is known about the subsurface geology and pressure regimes. In contrast, rank wildcats have no close offsets, and planning is based on interpretations of seismic data, distant offsets and prior experience. High-quality offset data are coveted by competent well planners to optimize well designs. When lacking offset data, the well planner must be more conservative in designing wells and include more contingencies.

Synonyms: offset" ( http://www.glossary.oilfield.slb.com/en/Terms.aspx?LookIn=te... )

"offset well

an oil well drilled opposite another oil well on an adjoining property" ( http://www.merriam-webster.com/dictionary/offset wellccc )

"offset well

(1) A well drilled on the next location to the original well. The distance from the first well to the offset well depends upon spacing regulations and whether the original well produces oil or gas. (2) A well drilled on one tract of land to prevent the Drainage of oil or gas to an adjoining tract where a well is being drilled or is already producing." ( http://dictionary.babylon.com/offset_well/ )

"offset well

Well drilled near another one." ( http://www.oilvoice.com/glossary-word/Offset_Well/162fce2.as... )

"offset well

an offset well is a well drilled before or after any other well but in the general vicinity." ( http://gomarcellusshale.com/forum/topics/what-is-an-offset-w... )

Dicționarul meu zice: "offset well = sondă vecină", dar depinde de definiție.