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Investigate means of stimulating tight gas sands in the presence of weak barriers by modified hydraulic-fracturing techniques. Annual report, November 1981-October 1982

Technical Report ·
OSTI ID:6173599
; ;

The object of the program is to devise a practical technique or techniques of inducing deeply penetrating fractures in tight gas formations bounded by base rock and/or overlain by an overburden rock that are not barriers to fracture migration. Post-fracturing well tests reveal a high percentage of fractures do not stay confined to the productive interval. By identifying these weak barrier zones, through the use of in-situ stress measurements, and by developing modified hydraulic fracturing techniques that will control fracture migration, the fracturing process could be more successful and greatly enhance the technology base necessary to improve gas production from tight formations. Four techniques have been proposed and are being developed in simulated tests performed in the laboratory at Terra Tek. They are: (1) Fracture Initiation Placement; (2) Fracture packing with light-weight additives; (3) Controlled Process Zone Fracturing; and (4) Electrical Fracturing followed by hydraulic fracturing. The most successful technique or techniques will then be fully tested in four field stimulations and the results evaluated for technical and economic viability.

Research Organization:
Terra Tek, Inc., Salt Lake City, UT (USA)
OSTI ID:
6173599
Report Number(s):
PB-89-159909/XAB; TR-83-03
Country of Publication:
United States
Language:
English

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Related Subjects

03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
030900* -- Natural Gas-- Artificial Stimulation
Plowshare-- (-1989)
COMMINUTION
DOCUMENT TYPES
ENHANCED RECOVERY
FIELD TESTS
FRACTURING
GEOLOGIC DEPOSITS
HYDRAULIC FRACTURING
MATHEMATICAL MODELS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
PERMEABILITY
PROGRESS REPORT
RECOVERY
RESOURCES
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
STIMULATION
TESTING
WELL COMPLETION
WELL STIMULATION