Designing, planning nitrogen jobs. Part 1. Flow back, commingled N/sub 2/ fluid curves aid planning
The amount of nitrogen to commingle with stimulation fluids is often determined by trial and error. Also, there has been some question as to how commingled nitrogen affects well treating parameters. Nitrogen flow back curves have been developed to reduce the guesswork when selecting a nitrogen concentration for more efficient fluid recovery. To more accurately establish treating conditions, commingled nitrogen fluid curves provide a quick and reliable tool. Nitrogen was introduced as a well servicing medium in 1956. It was used as a gas cushion to help control flowing pressures during drill stem tests. Since then, it has proved to be a valuable aid in almost all types of service procedures. Nitrogen is an inert gas and is noncorrosive. It is only slightly soluble in water, oil, and most other liquids. When commingled with the liquids, it remains in bubble form to help lift fluids from the well bore. This study deals with calculating how much nitrogen to commingle with treating fluids in well stimulation procedures. Also described are methods for establishing the bottom hole treating pressure with commingled nitrogen and a quick method of calculating volume changes during a job.
- OSTI ID:
- 5956416
- Journal Information:
- Oil Gas J.; (United States), Journal Name: Oil Gas J.; (United States) Vol. 77:9; ISSN OIGJA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020300* -- Petroleum-- Drilling & Production
CALCULATION METHODS
CHEMICAL COMPOSITION
DISPLACEMENT FLUIDS
ELEMENTS
ENGINEERING
FLUID INJECTION
FLUIDS
GAS INJECTION
MIXING
NITROGEN
NONMETALS
OIL WELLS
QUANTITY RATIO
RESERVOIR ENGINEERING
RESERVOIR PRESSURE
STIMULATION
WELL PRESSURE
WELL STIMULATION
WELLS