Improved means of fracture acidizing carbonate formations

Patent · Tue Aug 24 04:00:00 EDT 1993

OSTI ID:6062233

Jennings, Jr, A R

A method is described to improve fracture acidizing in a carbonate containing formation comprising: (a) hydraulically fracturing the formation with a fracturing fluid so as to form a fracture in the formation in a preferred direction; (b) directing an acid into the fracture in an amount and concentration sufficient to etch said fracture's face thereby creating channels therein; (c) introducing a viscous fluid into the fracture which fluid contains a material sufficient to prevent fracture growth in the existing fracture; (d) hydraulically fracturing within the existing fracture at a fracturing rate and pressure sufficient to create an additional fractured area as said material prevents fracturing forces from propagating the formed fracture further into the formation and directs another fracture into an unfractured area thereby interconnecting adjacent vuggy areas in the formation; and (e) thereafter repeating steps (b), (c), and (d) until a fracture system has been created in the formation which allows substantially increased drainage of hydrocarbonaceous fluids from the formation.

• Assignee: Mobil Oil Corp., Fairfax, VA (United States)
• Patent Number(s): US 5238067; A
• Application Number: PPN: US 7-883999
• OSTI ID: 6062233
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ACIDIZATION
CARBONATE ROCKS
ENERGY SOURCES
ENHANCED RECOVERY
FAILURES
FLUIDS
FOSSIL FUELS
FRACTURES
FRACTURING
FRACTURING FLUIDS
FUELS
HYDRAULIC FRACTURES
HYDRAULIC FRACTURING
OIL WELLS
PETROLEUM
PLUGGING
PLUGGING AGENTS
PRODUCTIVITY
ROCKS
SEDIMENTARY ROCKS
STIMULATION
WELL SERVICING
WELL STIMULATION
WELLS