Stimulation design for ultra-deep wells

Journal Article · Wed Sep 01 04:00:00 EDT 1965 · Pet. Eng.; (United States)

OSTI ID:6626437

Hannah, R R; Matson, B G; Halepeska, B F

Acid stimulation of ultra-deep wells below 20,000 ft, although complicated by high temperatures, high pressures, and complex rock environment, can be designed with successful results. Where reservoir development is good and the fracture network is well established, a small volume wash-type acid job to remove well bore-damage usually is adequate to insure high deliverability. Where the development is not so favorable and the rock is dense with poorly developed or closed fractures, the design of acid stimulation becomes more difficult. Acid corrosion of tubular goods is accelerated greatly at temperatures above 250/sup 0/F, but adequate protection can be achieved by proper selection of inhibitors. In order to increase the effective volume injected, either the injection rate must be increased or the acid must be retarded. In most cases, injection rates are fixed by bottomhole injection pressure and tubing size. Methods of retardation are the principal means by which effective volumes can be increased. A typical deep well acid stimulation job (Jake L. Hammon et al No. 1 Waples Platter) is described. This well 21,800 ft deep, in the Ellenburger formation, was treated with several stages, resulting in deliverability of approximately 20 MM cfd.

• Research Organization: Western Co; Western Co; Western Co
• OSTI ID: 6626437
• Journal Information: Pet. Eng.; (United States), Journal Name: Pet. Eng.; (United States) Vol. 37:10; ISSN PENGA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030900 -- Natural Gas-- Artificial Stimulation
Plowshare-- (-1989)
ACIDIZATION
CHEMICAL REACTIONS
CORROSION
CORROSION INHIBITORS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
GEOLOGIC STRUCTURES
NATURAL GAS
NATURAL GAS WELLS
OIL WELLS
PETROLEUM
RECOVERY
WELL CASINGS
WELLS