Back to results
US 2009/0260816 A1Published application
Method and System for Cementing
OwnerEarl Webb, Brett Fears +1inventors
InventorsEarl Webb, Brett Fears, Henry Rogers
Life of this patent
Estimating the term…
Abstract
A valve system for cementing including a valve and a sleeve shifter. The valve may have a moveable sleeve with openings and a housing situated about the moveable sleeve and having flow passages. The sleeve shifter may be configured to actuate the valve by moving the sleeve. The valve may be configured to be opened and/or closed multiple times. The valve may be used in reverse cementing and/or squeeze jobs.
Claims22
A valve system for cementing, comprising:
- a valve comprising a moveable sleeve having openings, and a housing situated about the moveable sleeve and having flow passages;
- and
- a sleeve shifter;
- wherein the sleeve shifter is configured to actuate the valve by moving the sleeve;
- and
- wherein the valve is configured to be opened and/or closed multiple times.
3 more elements
A method of reverse cementing, comprising:
- running a valve into a well bore, wherein the valve comprises a moveable sleeve having openings, and a housing situated about the moveable sleeve and having flow passages;
- actuating the valve with a sleeve shifter;
- ensuring that the valve is in an open position;
- and
- flowing cement down through an annulus between a casing and the well bore, through the valve, and up through a workstring;
- wherein the step of ensuring that the valve is in an open position is performed prior to the step of flowing the cement.
3 more elements
A method of performing a squeeze job, comprising:
- running a valve into a well bore, wherein the valve comprises a moveable sleeve having openings, and a housing situated about the moveable sleeve and having flow passages;
- actuating the valve with a sleeve shifter;
- ensuring that the valve is in an open position;
- and
- flowing cement down through a workstring, through the valve, and up through an annulus between a casing and the well bore;
- wherein the step of ensuring that the valve is in an open position is performed prior to the step of flowing the cement.
3 more elements
Dependencies are inferred from the claim text.