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Portable well mouth sealer

A wellhead sealer, a portable technology, applied in the directions of sealing/isolation, wellbore/well components, earth-moving drilling, etc., can solve the problem that the continuous sucker rod can not be used to lift the plunger, the wellhead sealing function cannot be effectively achieved, and the cost is increased. and other problems, to achieve the effect of significant oil increase effect, simple structure, convenient installation and disassembly

Inactive Publication Date: 2012-05-09
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For small wellhead operations, such as changing polished rods and bumping pumps, etc., the sealing effect of the wellhead cannot be effectively realized. The conventional method is to carry out well killing operations first to ensure that the wellbore is stable before implementation
In this way, time is wasted and costs are increased.
In particular, the traditional wellhead sealing device cannot be applied to the new technology that has been used in recent years-continuous sucker rod lifting plunger operation

Method used

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  • Portable well mouth sealer
  • Portable well mouth sealer

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Embodiment Construction

[0032] Next, the shape and structure of an embodiment of the portable wellhead sealer of the present invention will be described with reference to the accompanying drawings.

[0033] Such as figure 1 As shown, the portable wellhead sealer of the present invention includes a pressure-bearing rigid body 5, a polished rod or sucker rod packaging hole 11, a sealing cavity 9 at the top of the oil tree, a sealing groove 10, a sealing pressure plate 1, a sealing rubber core 2, and a sealing and locking mechanism .

[0034] The pressure-bearing rigid body 5 is composed of two corresponding cylindrical parts, and the two cylindrical parts can be opened and closed with the permanent connection end between them as an axis. When the two cylinders are partially closed, they form a complete cylindrical pressure-bearing rigid body. Here, the cross-sectional shape of the pressure-bearing rigid body 5 can be circular, rectangular, triangular or other shapes. The two cylindrical parts are for...

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Abstract

The invention discloses a portable well mouth sealer, which comprises a pressure-bearing rigid body (5) and a polished rod or sucker rod packaging hole (11), wherein the pressure-bearing rigid body (5) consists of two cylinder parts which can be opened and closed; semi-cylindrical recesses are formed on opposite surfaces of the two cylinder parts; and when the two cylinder parts are enclosed, the two semi-cylindrical recesses form the polished rod or sucker rod packaging hole (11). The portable well mouth sealer disclosed by the invention has a small size and a simple structure, and is convenient to install and detach; the well killing operation procedure of small-sized well mouth operation is eliminated, so that field operation is convenient and safe, and time and labor are saved; and the operating efficiency is increased, the operation cost can be reduced greatly, and the production effectiveness is enhanced, so that a remarkable oil increasing effect is achieved.

Description

technical field [0001] The invention relates to a wellhead sealer for realizing small-scale oil field operations, in particular to a portable wellhead sealer comprising two parts that can be opened and closed. Background technique [0002] At present, most oil fields are exploited by rod pumps. In this exploitation process, sealing devices are needed to achieve wellhead sealing. The traditional wellhead sealing device is fixed at the wellhead, and plays a sealing role when the pumping unit is in normal working state or in normal shutdown state to prevent accidents such as blowout and crude oil leakage. The sealing is mainly realized by the sealing rubber ring and the polished rod . For small wellhead operations, such as changing polished rods and bumping pumps, etc., the sealing effect of the wellhead cannot be effectively realized. The conventional method is to carry out well killing operations first to ensure that the wellbore is stable before implementation. In this way...

Claims

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Application Information

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IPC IPC(8): E21B33/03
Inventor 罗得国赵江
Owner CHINA PETROLEUM & CHEM CORP
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