Method for formation stimulation in horizontal wellbores using hydraulic fracturing

Patent · Tue Jul 03 00:00:00 EDT 1990

OSTI ID:6830969

Jennings, Jr, A R

This patent describes a method for stimulating a formation penetrated by a horizontal wellbore. It comprises: perforating a horizontal wellbore along its top side at desired intervals so as to enable fluid communication with the formation; fracturing hydraulically the formation through perforations in the wellbore with a fracturing fluid containing a substantially lightweight proppant which has a density substantially equal to the fluid thereby creating a fracture within a first interval of the formation and maximizing multilayer proppant placement within the fracture; releasing hydraulic pressure on the formation thereby causing the fracture to be propped with the proppant; placing ball sealers in the fracturing fluid in an amount sufficient to close perforations in the wellbore adjacent the first interval; applying pressure in an amount sufficient to fracture the formation in an area adjacent to the first interval. This causes the ball sealers to seal off perforations in the first interval and direct fluid into a second perforated interval of the wellbore thereby fracturing the formation adjacent to the second interval; and releasing pressure applied to the fluid thereby maximizing multilayer proppant placement and causing the ball sealers to float upwardly with the fluid through the wellbore where they are recovered.

• Assignee: Mobil Oil Corp., New York, NY (USA)
• Patent Number(s): A; US 4938286
• Application Number: PPN: US s 7-379755
• OSTI ID: 6830969
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
COMMINUTION
DIRECTIONAL DRILLING
DRILLING
ENHANCED RECOVERY
FLUIDS
FRACTURING
FRACTURING FLUIDS
HYDRAULIC FRACTURING
NATURAL GAS WELLS
OIL WELLS
RECOVERY
STIMULATION
WELL STIMULATION
WELLS