Overbalance perforating and stimulation method for wells
Patent
·
OSTI ID:7106618
This patent describes a method for decreasing the resistance to fluid flow in a subterranean formation around a well having unpreforated casing fixed therein, the casing extending at least partially through the formation. It comprises providing a liquid in the casing opposite the formation to be treated; placing perforating means in the casing at a depth opposite the formation to be treated; injecting gas into the well until the pressure in the liquid opposite the formation to be treated will be at least as large as the fracturing pressure of the formation when the liquid pressure is applied to the formation; activating the perforating means; and at a time before pressure in the well at the depth of the formation to be treated has substantially decreased, injecting fluid at an effective rate to fracture the formation.
- Assignee:
- Oryx Energy Co., Dallas, TX (United States)
- Patent Number(s):
- A; US 5131472
- Application Number:
- PPN: US 7-699987
- OSTI ID:
- 7106618
- Country of Publication:
- United States
- Language:
- English
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