TNSN04142A1 - Bi-directional thruster pig apparatus and method of utilizing same - Google Patents

Bi-directional thruster pig apparatus and method of utilizing same

Info

Publication number
TNSN04142A1
TNSN04142A1 TNP2004000142A TNSN04142A TNSN04142A1 TN SN04142 A1 TNSN04142 A1 TN SN04142A1 TN P2004000142 A TNP2004000142 A TN P2004000142A TN SN04142 A TNSN04142 A TN SN04142A TN SN04142 A1 TNSN04142 A1 TN SN04142A1
Authority
TN
Tunisia
Prior art keywords
flow
bores
fluid
pipeline
bore
Prior art date
Application number
TNP2004000142A
Inventor
James R Crawford
Original Assignee
Superior Energy Services Llc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US10/068,782 external-priority patent/US6561280B1/en
Priority claimed from US10/114,439 external-priority patent/US6651744B1/en
Application filed by Superior Energy Services Llc filed Critical Superior Energy Services Llc
Publication of TNSN04142A1 publication Critical patent/TNSN04142A1/en

Links

Landscapes

  • Cleaning In General (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Pipe Accessories (AREA)

Abstract

A retrievable pig apparatus (10) having a substantially cylindrical body portion (32); the body portion (32) having a central flow bore (34) therethrough; and secured to coiled tubing (22); including a central fluid flow bore (34) in fluid communication with the interior bore of the coiled tubing (35); a plurality of flow bores (40) spaced equally apart within the body; with the flow bores (40) allowing fluid flow to be injected at a certain predetermined pressure through the flow bores (40); so as to be emitted on the front end of the pig for defining a high pressure spray of fluid or the like material to break up blockages of debris (70) in the pipeline; such as paraffin or the like; the debris (70) retrieved through the central bore (34) back into the coiled tubing (35) to be stored in a tank (157) or the like on the surface. There is further included a plurality of flexible cups (24); spaced apart along the outer wall of the pig body (25); each cup (24) secured to an interior metallic ring (26) around the body (25) of the pig; with the flexible cups (24) making contact with the wall (13) of the pipeline so as to provide a continuous fluid seal between the wall (13) of the pipeline and the ends of the plurality of flexible cups (24). Intermediate each cup (24) there is provided a compressible safety ring (28); which will compress under excess pipeline pressure; thus allowing the fluid to flow past the plurality of flexible cups (24); reducing the pressure in the pipeline. Further there is provided within the plurality of six flow bores (40) around the interior flow bore (34); for adjusting the force that is allowed to flow through the plurality of bores (40) in either direction by providing a first and second thruster springs (42; 44) of a pre-determined compressible force for allowing the springs (42;44) to be compressed and effecting fluid flow therethrough in the direction in which the flow is to travel in the bores (40).
TNP2004000142A 2002-02-05 2004-07-29 Bi-directional thruster pig apparatus and method of utilizing same TNSN04142A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/068,782 US6561280B1 (en) 1997-11-21 2002-02-05 Method of injecting tubing down pipelines
US10/114,439 US6651744B1 (en) 1997-11-21 2002-04-02 Bi-directional thruster pig apparatus and method of utilizing same
PCT/US2002/035497 WO2003067016A2 (en) 2002-02-05 2002-11-05 Bi-directional thruster pig apparatus and method of utilizing same

Publications (1)

Publication Number Publication Date
TNSN04142A1 true TNSN04142A1 (en) 2007-03-12

Family

ID=40297713

Family Applications (1)

Application Number Title Priority Date Filing Date
TNP2004000142A TNSN04142A1 (en) 2002-02-05 2004-07-29 Bi-directional thruster pig apparatus and method of utilizing same

Country Status (4)

Country Link
CO (1) CO5601051A2 (en)
EC (1) ECSP045260A (en)
HK (1) HK1074474A1 (en)
TN (1) TNSN04142A1 (en)

Also Published As

Publication number Publication date
ECSP045260A (en) 2004-11-26
CO5601051A2 (en) 2006-01-31
HK1074474A1 (en) 2005-11-11

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