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Method of Retrieving a Flow Back Jet Pump from an Oil Well

a jet pump and oil well technology, applied in the field of jet pumps, can solve the problem that the prior art does not include the entire jet pump assembly that can be installed, and achieve the effect of facilitating the pumping ou

Inactive Publication Date: 2017-08-31
TECH FLO CONSULTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Enables the complete removal and reconfiguration of the jet pump assembly without a wireline, enhancing operational flexibility and reducing the need for complex rigging, thereby improving maintenance and operational efficiency.

Problems solved by technology

However, the prior art does not include an entire jet pump assembly that can be installed in the reverse flow mode and subsequently removed from the tubular string without the use of a wire line.

Method used

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  • Method of Retrieving a Flow Back Jet Pump from an Oil Well
  • Method of Retrieving a Flow Back Jet Pump from an Oil Well
  • Method of Retrieving a Flow Back Jet Pump from an Oil Well

Examples

Experimental program
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Embodiment Construction

[0014]Referring to FIG. 1 the jet pump assembly 10 according to an embodiment of the invention is positioned within an outer tubular member 11 having an upper end 12 and lower end 13 adapted to be connected to a tubular string which extends within the casing (not shown) of an oil / gas well. Outer tubular member 11 is generally of the same diameter of the tubular string such that an annual gap exists between the outer surface of the outer tubular member 11 and the casing of a well. The upper end 12 of tubular member 11 includes an annular shoulder 62 and an annular recess 61. Recess 61 receives a plurality of pivotably mounted dogs 15 pivoted at 67 that cooperate with shoulder 62 to normally prevent upward movement of the jet pump unit within tubular member 11 when the jet pump assembly is in the reverse flow mode as shown in FIG. 1.

[0015]The jet pump assembly includes a jet pump housing 16 having an upper portion 14, a middle portion 27 and a lower portion 25. Lower portion 25 includ...

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PUM

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Abstract

A jet pump assembly is adapted to be releasably attached to a tubular member of a tubular string in an oil well. The jet pump may be pumped out of the tubular string to the surface by a reverse flow of power fluid down the well between the tubular string and the casing of the well. Consequently the jet pump may be serviced or reconfigured to a direct pumping mode without the necessity of a wire line or other apparatus. An attachment tool is provided that attaches to a fishing neck on the jet pump and also includes a plurality of seal cups. The attachment tool includes a rod which is adapted to release a locking mechanism positioned in the jet pump.

Description

[0001]This application is a divisional application of Ser. No. 14 / 982,962 filed Dec. 29, 2015 which is a continuation of application Ser. No. 14 / 474,912 filed Sep. 2, 2014, which are incorporated by reference herein in their entirety.BACKGROUND OF INVENTION[0002]1. Field of the Invention[0003]This invention relates to jet pumps that are used to lift fluids such as water and oil from the interior of an oil well. Pumps of this type utilize a nozzle and a venturi tube to create a pressure drop which can draw fluid from a location in the well below the pump. The power fluid and produced fluid from the well are then comingled in a mixing tube and diffuser where the pressure is increased to a point where the power and produced fluids are forced to the surface of the well where the produced fluids can be separated.[0004]2. Description of Related Art[0005]Jet pumps as described above are known that include a subassembly of the pump to be circulated back to the surface for servicing for exam...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E21B23/00F04F5/46F04F5/48E21B43/12
CPCE21B23/00E21B43/124F04F5/48F04F5/463F04F5/464
Inventor JACKSON, WILLIAM J.REISSIG, ERIK J.
Owner TECH FLO CONSULTING