Claims
- 1. A downhole cementing tool, comprising:a tubular member having an upper end for lowering into a well bore to permit it to be cemented therein, and having a bore with a relatively large diameter upper portion enabling one or more balls and a pump down plug to be lowered therein and a smaller lower portion including a liner wiper plug whose bore is smaller than the ball but permits passage of the pump down plug therethrough; a diverter within the tubular member intermediate the upper and lower portions and having a side pocket to one side of the bore to receive the ball; and a ramp having a downwardly slanted upper surface to guide the ball into the side pocket and prevent passage of the ball through the tubular member, and to pass the pump down plug when the ball is in the pocket.
- 2. A downhole cementing tool as defined in claim 1, wherein the diverter is provided in a sub connected to a lower end of the large diameter upper portion.
- 3. A downhole cementing tool as defined in claim 1, wherein the tubular member is positioned within a liner.
- 4. A downhole cementing tool as defined in claim 1, wherein the liner wiper plug and the plug are releasedly connected to the tubular member.
- 5. A downhole cementing tool as defined in claim 1, wherein the ramp has a generally U-shaped opening facing the pocket.
Parent Case Info
This application claims the benefit of Provisional Application No. 60/292,049, filed May 18, 2001 and assigned to the assignee of the present application.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
4171019 |
Cole |
Oct 1979 |
A |
5553672 |
Smith, Jr. et al. |
Sep 1996 |
A |
Provisional Applications (1)
|
Number |
Date |
Country |
|
60/292049 |
May 2001 |
US |