Iron control in west Texas sour-gas wells provides sustained production increases

Journal Article · Wed May 01 00:00:00 EDT 1991 · Journal of Petroleum Technology; (United States)

DOI:https://doi.org/10.2118/20122-PA· OSTI ID:5737682

Walker, M L; Dill, W R; Besler, M R; McFatridge, D G ^[1]

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1. Halliburton Services (US)

Permian Basin operators have recorded sustained production increases in oil wells by preventing precipitation of iron sulfide and other sulfur-containing species. This improvement has resulted largely from cleaning out tubing before acidizing and from preventing the precipitation of ferrous sulfide and the formation of elemental sulfur by simultaneous use of iron chelants and sulfide-control agents. Previously used methods gave only temporary production increases that terminated when iron dissolved by the stimulation acid reprecipitated in the pay zone and damage the formation after the stimulation acid was spent. This paper describes a method to optimize iron sulfide control, methods to minimize reprecipitation, and case histories from the Permian Basin that show improved methods to control iron in sour-well environments.

• OSTI ID: 5737682
• Journal Information: Journal of Petroleum Technology; (United States), Vol. 43:5; ISSN 0022-3522
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
NATURAL GAS WELLS
SCALE CONTROL
ACIDIZATION
CHELATES
IRON
IRON SULFIDES
PERMIAN BASIN
PRECIPITATION
PRODUCTION
SULFIDES
TUBES
CHALCOGENIDES
COMPLEXES
CONTROL
ELEMENTS
IRON COMPOUNDS
METALS
SEPARATION PROCESSES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
WELLS
030300* - Natural Gas- Drilling
Production
& Processing