Method for suspending wells
This patent describes a method for shutting in a well which minimizes formation damage. It comprises: placing into a formation a liquid solution sufficient to establish fluid flow into the formation which solution also minimizes fluid retention; pumping a solidifiable gel mixture into the productive interval of a formation via a wellbore; causing the gel mixture to become a solid thereby forming a gel plug within the wellbore and a formation gel within the formation sufficient to withstand environmental formation conditions and pressures which cause hydrocarbonaceous fluids to flow into the wellbore from the formation areas near the wellbore; placing in the wellbore on top of the plug an amount of cement sufficient to isolate the productive interval when the cement hardens while being supported by the plug; and allowing the cement to set which set cement in combination with the gel plug is competent to exclude production fluids from the wellbore.
- Assignee:
- Mobil Oil Corp., New York, NY
- Patent Number(s):
- A; US 4898242
- Application Number:
- PPN: US 7-179728A
- OSTI ID:
- 7180997
- Country of Publication:
- United States
- Language:
- English
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Method for suspending wells
Method for suspending wells
Related Subjects
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
AMIDES
AMINES
BUILDING MATERIALS
CEMENTING
CEMENTS
CHEMICAL COMPOSITION
COLLOIDS
DISPERSIONS
FORMATION DAMAGE
GELS
HYDROGEN COMPOUNDS
HYDROXYL RADICALS
MATERIALS
NATURAL GAS WELLS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
RADICALS
RESINS
THIOLS
WATER
WELL COMPLETION
WELLS