Apparatus and method for directionally disposing a flexible member in a pressurized conduit

• US 8,230,934 B2
• Filed: 10/02/2009
• Issued: 07/31/2012
• Est. Priority Date: 10/02/2009
• Status: Expired due to Fees

• Current Assignee: Baker Hughes Incorporated (Baker Hughes Company)
• Original Assignee: Baker Hughes Incorporated (Baker Hughes Company)
• Inventors: Darby, John Gregory, Becker, Harold L.
• Primary Examiner(s): Neuder, William P
• Assistant Examiner(s): Alker, Richard
• Application Number:
  US12/572,543
• Publication Number:
  US 20110079402A1
• Time in Patent Office: 1,033 Days
• Field of Search: 166/385, 166/378, 166/379, 166/380, 166/65.1, 166/77.1, 166/85.1
• US Class Current: 166/385
• CPC Class Codes: E21B 33/072 for cable-operated tools E21B33/076 takes precedence
• CPC Class Codes: E21B 36/00 Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones

Abstract

An apparatus and method for directionally disposing an elongated flexible member in a pressurized conduit. The method includes inserting a bent end portion of an elongated hollow body through an opening in fluid communication with a well valve and defined by a pressurized conduit, the bent end portion being disposed in a pre-determined direction and location within the pressurized conduit; inserting a lead portion of an elongated flexible member into a fluid passageway defined by a primary valve, the fluid passageway of the primary valve being in sealed fluid relationship with the elongated hollow body which, in turn, is in sealed fluid relationship with the pressurized conduit, so that the lead portion of the elongated flexible member is inserted through the bend end portion and into the pressurized conduit by a pre-determined distance; and thereafter retaining in place the inserted elongated flexible member, whereby the elongated flexible member is directionally disposed in the pressurized conduit.

Claims

1. An apparatus for directionally disposing an elongated flexible member into a pressurized conduit defining at least one opening in fluid communication with a well valve, the apparatus comprising:

an elongated hollow body comprising a bent end portion and an elongated portion, wherein the bent end portion is sized and configured to be inserted into a pre-determined location within the pressurized conduit through the opening and the well valve and to receive a lead portion of the elongated flexible member therethrough;

a primary valve comprising a first end portion and a second end portion and defining a fluid passageway connecting the first end portion and second end portion, the first end portion of the primary valve being sized and configured to be in a sealed fluid relationship with a first portion of the elongated portion of the elongated hollow body and the second end portion of the primary valve being sized and configured to receive the lead portion of the elongated flexible member therethrough, the fluid passageway of the primary valve being in a substantially sealed fluid relationship with the pressurized conduit and further being operable to control the passage of fluid through the fluid passageway;

an end cap coupled to and in a substantially sealed relationship with a distal end portion of the elongated flexible member; and

at least a first lock sized and configured to releasably retain the bent end portion of the elongated hollow body in the pre-determined location in the pressurized conduit and a second lock sized and configured to releasably retain the elongated flexible member after insertion of the lead portion of the elongated flexible member through the bent end portion;

wherein the bent end portion is oriented at about 10 degrees to about 60 degrees from a longitudinal axis of the elongated portion of the elongated hollow body;

wherein the pressurized conduit is a hydrocarbon well casing and the pre-determined location is an annulus between the hydrocarbon well casing and a production tube;

further comprising a primary seal housing comprising a primary seal, a first primary seal housing end portion, and a second primary seal housing end portion, wherein the primary seal is disposed within the primary seal housing and is sized and configured to slidably receive in a substantially sealed relationship a second portion of the elongated portion of the elongated hollow body therethrough, and the first primary seal housing end portion is coupled to the well valve in a substantially sealed relationship;

wherein the first lock is coupled to the second primary seal housing end portion; and

further comprising a secondary seal housing comprising a secondary seal, a first secondary seal housing end portion, and a second secondary seal housing end portion defining a cone-shaped inner cavity, wherein the secondary seal is disposed within the secondary seal housing and is sized and configured to receive in a substantially sealed relationship the first portion of the elongated portion of the elongated hollow body therethrough, and the second secondary seal housing end portion is coupled to the primary valve in a substantially sealed relationship.

2. The apparatus of claim 1 further comprising a tertiary seal housing comprising a tertiary seal, a first tertiary seal housing end portion, and a second tertiary seal housing end portion, wherein the tertiary seal is disposed within the tertiary seal housing and is sized and configured to slidably receive in a substantially sealed relationship the lead portion of the elongated flexible member therethrough, and the first tertiary seal housing end portion is coupled to the primary valve in a substantially sealed relationship.

3. The apparatus of claim 2 wherein the second lock is coupled to the second tertiary seal housing end portion.

4. The apparatus of claim 1, wherein the elongated flexible member defines an elongated bore therethrough, and one or more antennas are disposed within the elongated bore;

and further comprising a first antenna sized and configured to transmit radio waves at one or more frequencies in the range of about 1 to about 100 megahertz and a second antenna sized and configured to transmit microwaves at one or more frequencies in the range of about 1 to about 100 gigahertz.

5. A method comprising:

inserting a bent end portion of an elongated hollow body through an opening in fluid communication with a well valve and defined by a pressurized conduit, the bent end portion being disposed in a pre-determined direction and location within the pressurized conduit;

inserting a lead portion of an elongated flexible member into a fluid passageway defined by a primary valve, the fluid passageway of the primary valve being in sealed fluid relationship with the elongated hollow body which, in turn, is in sealed fluid relationship with the pressurized conduit, so that the lead portion of the elongated flexible member is inserted through the bent end portion and into the pressurized conduit by a pre-determined distance;

thereafter retaining in place the inserted elongated flexible member, whereby the elongated flexible member is directionally disposed in the pressurized conduit;

further comprising disposing one or more antennas within an elongated bore defined by the elongated flexible member;

wherein a distal end portion of the elongated flexible member is in a substantially sealed relationship with an end cap comprising at least one electrical fitting sized and configured to transmit one or more electromagnetic wave forms from an external source to the one or more antennas and to be coupled to the one or more antennas; and

further comprising coupling a first antenna to a first electrical fitting and coupling a second antenna to a second electrical fitting, wherein the first antenna is sized and configured to transmit radio waves at a frequency in the range of about 1 to about 100 megahertz and the second antenna is sized and configured to transmit microwaves at a frequency in the range of about 1 to about 100 gigahertz.

6. The method of claim 5 wherein the bent end portion is oriented at an angle in the range of about 10 to about 60 degrees from a longitudinal axis of an elongated portion of the elongated hollow body,

wherein the pressurized conduit is a hydrocarbon well casing and the pre-determined location is a portion of an annulus between the hydrocarbon well casing and a production tube;

and further comprising disposing a first primary seal housing end portion of a primary seal housing in fluid sealing communication with the well valve and a second primary seal housing end portion of the primary seal housing being sized and configured to slidably receive in a sealing relationship a second portion of the elongated hollow body.

7. The method of claim 6 further comprising adjusting the second portion of the elongated hollow body so that the bent end portion of the elongated hollow body is in the pre-determined direction and location within the pressurized conduit.

8. The method of claim 6 further comprising retaining in place the second portion of the elongated hollow body.

9. The method of claim 6 further comprising disposing a second secondary seal housing end portion of a secondary seal housing in sealing communication with the primary valve and a first secondary seal housing end portion of the secondary seal housing being sized and configured to receive in a sealing relationship a first portion of the elongated hollow body.

10. The method of claim 9 further comprising disposing a first tertiary seal housing end portion of a tertiary seal housing in sealing communication with the primary valve and a second tertiary seal housing end portion of the tertiary seal housing being sized and configured to slidably receive in a sealing relationship the lead portion of the elongated flexible member.

11. The method according to claim 5 further comprising transmitting one or more electromagnetic wave forms from an external source through the electrical fitting to the one or more antenna;

further comprising transmitting radio waves from a first antenna at a frequency in the range of about 1 to about 100 megahertz; and

further comprising transmitting microwaves from a second antenna at a frequency in the range of about 1 to about 100 gigahertz.