Tool and process for stimulating a subterranean formation

Patent · Tue Jan 17 00:00:00 EST 1989

OSTI ID:6161385

Trost, S A

A tool is described for stimulating a subterranean formation comprising, an elongate propellant stack constructed from propellant material modules that are formed from a combination of propellant materials such that the propellant module combination will have a desired burn rate, propellant modules of a center portion to have identical convex and concave surfaces as the respective top and bottom faces thereof with end propellant modules to form the propellant stack ends each having an end face to fit within or over one of the center portion propellant modules convex or concave faces; adhesive means containing grains of a propellant or explosive mixed therein to provide a burn rate that is approximately that of the propellant stack for bonding the selected propellant modules together, the adhesive means to burn with the propellant stack; means for supporting and lowering the propellant stack into a well bore to a subterranean formation to be stimulated; and means for igniting the propellant stack.

• Assignee: NOV; NOV-89-053188; EDB-89-075934
• Patent Number(s): US 4798244
• OSTI ID: 6161385
• Resource Relation: Patent File Date: Filed date 16 Jul 1987
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
OIL WELLS
EXPLOSIVE FRACTURING
TOOLS
CHEMICAL EXPLOSIVES
DESIGN
FIELD PRODUCTION EQUIPMENT
IGNITION SYSTEMS
PETROLEUM
PROPELLANTS
WELL STIMULATION
COMMINUTION
ENERGY SOURCES
EQUIPMENT
EXPLOSIVES
FOSSIL FUELS
FRACTURING
FUELS
STIMULATION
WELLS
020300* - Petroleum- Drilling & Production