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Glossary:Working interest
An interest in an oil and natural gas lease that gives the owner of the interest the right to drill for and produce oil and natural gas on the leased acreage and requires the owner to pay a share of the costs of drilling and production operations.
The total of all the working interest percentages in a well must be equal to 100%.
Or
A company’s equity interest in a project before reduction for royalties or production share owed to others under the applicable fiscal terms. (SPE)