Iron-control additives improve acidizing

Journal Article · Mon Jul 24 00:00:00 EDT 1989 · Oil and Gas Journal; (USA)

OSTI ID:5536164

Walker, M; Dill, W ^[1]; Besler, M ^[2]

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1. Halliburton Services, Duncan, OK (USA)
2. Halliburton Services, Tioga, ND (US)

Iron sulfide and sulfur precipitation in sour wells can be controlled with iron-sequestering agents and sulfide modifiers. Oil production has been routinely increased in sour wells where precipitation of iron sulfide and elemental sulfur has been brought under control. Production increases have been especially noteworthy on wells that had a history of rapid production decline after acid stimulation. Twenty-fold production increases have been recorded. Key to the production increase has been to increase permeability with: Iron chelating agents that control precipitation of iron sulfide. A sulfide modifier that reduces precipitation of solids in the presence of excessive amounts of hydrogen sulfide and prevents precipitation of elemental sulfur.

• OSTI ID: 5536164
• Journal Information: Oil and Gas Journal; (USA), Vol. 87:30; ISSN 0030-1388
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
DISPLACEMENT FLUIDS
ADDITIVES
OIL WELLS
ACIDIZATION
CHELATING AGENTS
ENHANCED RECOVERY
IRON SULFIDES
PERMEABILITY
SULFUR
WELL STIMULATION
CHALCOGENIDES
ELEMENTS
FLUIDS
IRON COMPOUNDS
NONMETALS
RECOVERY
STIMULATION
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
WELLS
020300* - Petroleum- Drilling & Production
400201 - Chemical & Physicochemical Properties