Hydraulic Device and Method for Locating and Sealing Holes or Cracks in Oil Well Production Tubing
OwnerByron Raúl López Robayoinventor
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Abstract
The invention relates to a hydraulic device for in situ hermetic sealing of holes, cracks or leaks from joints that occur in underground production tubing used for the extraction of oil, gas or other fluids. In particular, the invention relates to a device comprising an assembly including four sections comprising various securing and anchoring means, and to the method for moving the device in order to detect and locate the site of the leak and to position the device inside the fluid production tubing, such that it remains fixed in place and hermetically seals the damaged section of the production tubing, allowing normal production flow to be resumed.
Claims19
A hydraulic device for in situ sealing of cracks and holes in the production tubing of oil wells, located underground, said device being assembled along 4 sections with a total length of 2.00 m to 3.00 m and a diameter of 70 to 80 mm, and it comprises:
- a) an upper section, comprising:
- 1 upper cylinder, and
- upper displacement means;
- b) an extension section, comprising:
- an upper piston,
- an upper sealing means located on the upper segment of the upper piston,
- 1 extension tube whose upper part holds the upper piston by means of 2 set screws, and whose lower part is coupled with a central section, and 1 lower adapter, to connect the lower part of the extension section to the central section;
- c) the central section, comprising:
- a central cylinder,
- lower displacement means, and,
- wherein the lower part of the central section is connected to a lower piston housing;
- and,
- d) a lower, comprising:
- the lower piston housing, whose lower part contains
- 2 set screws,
- 1 lower cylinder,
- 1 lower piston,
- a lower sealing means,
- 1 sliding cone, and
- anchoring means, comprising 1 cage, 2 wedges.
Dependencies are inferred from the claim text.