Invention Grant
- Patent Title: Subsurface release cementing plug
- Patent Title (中): 地下释放固井塞
-
Application No.: US13289642Application Date: 2011-11-04
-
Publication No.: US08967255B2Publication Date: 2015-03-03
- Inventor: David D. Szarka , David E. Y. Levie
- Applicant: David D. Szarka , David E. Y. Levie
- Applicant Address: US TX Houston
- Assignee: Halliburton Energy Services, Inc.
- Current Assignee: Halliburton Energy Services, Inc.
- Current Assignee Address: US TX Houston
- Agency: Baker Botts L.L.P.
- Agent John W. Wustenberg
- Main IPC: E21B33/14
- IPC: E21B33/14 ; E21B33/16

Abstract:
A subsurface release plug release apparatus comprising a mandrel comprising a bottom plug portion, a top plug portion, a work string attachment portion, a first release portion between the bottom plug portion and the top plug portion, wherein the first release portion comprises a controlled strength segment configured to fail structurally and thereby release the bottom plug portion at a first fluid pressure, and a second release portion between the top plug portion and the work string attachment portion, wherein the second release portion is configured to release the bottom plug portion at a second fluid pressure, wherein the first fluid pressure is less than the second fluid pressure, a bottom plug body disposed about the bottom plug portion of the mandrel, and a top plug body disposed about the top plug portion of the mandrel.
Public/Granted literature
- US20130112410A1 Subsurface Release Cementing Plug Public/Granted day:2013-05-09
Information query