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Righting sucker rod wellhead cleaning device for workover operation and operating method thereof

A technology for cleaning devices and sucker rods, which is applied in the direction of wellbore/well components, drill pipes, cleaning tools, etc., and can solve the problems of large diameter and size difference between couplings and centralizing blocks, easy ejection of steam or oil, poor sealing performance, etc. problems, to achieve good cleaning effect, reduce the height of the device, and facilitate the operation of the wellhead

Pending Publication Date: 2019-02-01
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, most of the sucker rod wellhead flushing devices used for workover operations are relatively simple in structure and poor in sealing performance.
Especially when the sucker rod passes through the sucker rod wellhead cleaning device, due to the large diameter and size difference between the sucker rod body, coupling and centralizing block, the sucker rod wellhead cleaning device is not tightly sealed, and steam or oil is easy to spray out

Method used

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  • Righting sucker rod wellhead cleaning device for workover operation and operating method thereof
  • Righting sucker rod wellhead cleaning device for workover operation and operating method thereof
  • Righting sucker rod wellhead cleaning device for workover operation and operating method thereof

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Embodiment Construction

[0036] In describing the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "inner", "outer", "side", "one end", The orientation or positional relationship indicated by "one side" is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, Constructed and operative in a particular orientation and therefore are not to be construed as limitations of the invention. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0037] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for ex...

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Abstract

The invention discloses a righting sucker rod wellhead cleaning device for workover operation and an operating method thereof. The righting sucker rod wellhead cleaning device comprises a main body; agland is arranged at the upper end of the main body, and the lower end of the main body is connected with a tubing coupling through a lower joint; a clamping table is arranged in the main body and separates the main body into an upper sealing cavity and a lower cleaning cavity; an oil scraping sleeve is arranged in the sealing cavity, and a liquid inlet is formed in one side of the exterior of the cleaning cavity; and a sucker rod sequentially passes through the lower joint, the cleaning cavity, the oil scraping sleeve and the gland and then penetrates out. The overall design is adopted, theheight of the device is decreased, wellhead operation is convenient, during closed cleaning, in the sucker rod pulling process of the workover operation, through the sucker rod wellhead cleaning device, sucker rod pulling operation and cleaning operation are carried out synchronously, and the problem of environment pollution caused by sucker rod pulling operation and sucker rod ground cleaning iseffectively solved.

Description

technical field [0001] The invention belongs to the technical field of oil field cleaning and workover operations, and in particular relates to a wellhead cleaning device for righting sucker rods for well workover operations and an operating method thereof. Background technique [0002] During oilfield workover operations, the crude oil and wax adhering to the surface of the sucker rod fall on the operator or the ground, seriously affecting the efficiency of construction operations and polluting the environment. The sucker rods taken out need to be further cleaned by boiler trucks, which is time-consuming and labor-intensive. [0003] In recent years, some domestic oilfields have carried out closed cleaning and workover operations tests, mainly using environmental protection cleaning equipment to provide high temperature and high pressure hot water or steam, and cleaning the oil rod and the inner and outer walls of the oil pipe synchronously during the pulling out process th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/10E21B37/00E21B33/03
CPCE21B17/1071E21B33/03E21B37/00
Inventor 李旭梅江智强巨亚锋王尚卫罗有刚张雄涛张家富梁万银郭发荣廖永刚
Owner PETROCHINA CO LTD
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