Controlled rate well cementing tool
This patent describes a method for controllably supplying a desired flowable material to a particular portion of a formation surrounding a well cased by a casing. It comprises lowering a tool mounted on a string of tool tubing into the well, the tool comprising: a housing adapted to be fixed in a desired position in a well; a movable valve member; a valve seat; an actuator; means for defining a choke orifice of desired size; and a packer fixed to the housing of the tool; employing the packer to fix the housing to the casing of the well; while the valve is in the open position, disposing a quantity of the desired material beneath the tool, in the vicinity of the particular portion of the formation; closing the valve by moving the actuator with respect to the housing; and pressurizing the well to force fluid disposed in the well above the tool through the choke orifice.
- Assignee:
- Mobil Oil Corp., Fairfax, VA (United States)
- Patent Number(s):
- US 5131473; A
- Application Number:
- PPN: US 7-668835
- OSTI ID:
- 6984631
- Resource Relation:
- Patent File Date: 13 Mar 1991
- Country of Publication:
- United States
- Language:
- English
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