CN204716232U - A kind of detecting shaft anticreep die - Google Patents

Abstract

The utility model discloses an anti-stripping die for a detection well, which relates to the technical field of geological detection wells. It includes an upper joint, an outer shell, a solid soft metal body, a core, and a water eye channel; the upper part of the upper joint is provided with internal threads, and the lower part is respectively provided with internal and external threads; the connection between the upper joint and the outer shell, the upper joint and the core The space is connected by threads; the core and the outer shell are provided with support rings; the soft solid metal body is poured between the outer shell and the core; the soft solid metal body wraps the bottom of the outer shell; The threaded connection part of the joint is provided with more than one threaded hole, and a fastening screw is arranged in the threaded hole. The structure is simple, it prevents the perfused solid soft metal material from falling off, and prevents scratching damage. It is not only suitable for ordinary vertical wells, but also for directional wells and horizontal wells.

Description

An anti-stripping die for detection well

technical field

The utility model relates to the technical field of geological detection wells.

Background technique

Impressions can be used to detect the type and degree of downhole casing damage, the depth of falling objects, the shape and orientation of fish tops, judge the nature of accidents based on the impressions, and provide data for formulating repair and salvage measures and selecting tools. At present, impression molds are widely used in the oil industry, oil and gas fields, oil and gas fields, water well overhaul, and measure maintenance to detect the "fish top" situation of falling objects in wells.

The existing impression has no protective structure on the outside, and the solid soft metal material poured into the impression is easy to fall off. Once it falls off, it is very difficult to handle, posing a safety hazard. The impression without a protective structure is easily caught by the casing during the tripping process. Scratched and damaged, the imprint cannot be accurately judged. In addition, impressions without protective structures cannot be used for "directional wells and horizontal wells" operations.

Contents of the invention

The technical problem to be solved by the utility model is to provide an anti-stripping die for the above-mentioned deficiencies in the prior art. Vertical wells, but also suitable for directional wells and horizontal wells.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: including an upper joint, an outer shell, a solid soft metal body, a core, and a water hole channel; the upper part of the upper joint is provided with internal threads, and the lower part is respectively provided with internal threads , external thread; the upper joint and the outer shell, the upper joint and the core are connected by threads; the core and the outer shell are provided with support rings; the soft solid metal body is poured between the outer shell and the core; the soft The solid metal body encloses the bottom of the outer casing; more than one threaded hole is provided on the threaded connection part of the outer casing and the upper joint, and fastening screws are arranged in the threaded holes.

Preferably, more than one threaded hole is three threaded holes.

Preferably, the lower end of the anti-off stamp is provided with a 30° chamfer.

The beneficial effects produced by adopting the above technical scheme are: the utility model has a simple structure, and an outer casing is provided to prevent the perfused solid soft metal material from falling off, prevent scratch damage, and increase the safety of construction. The utility model can be used for Ordinary wells are also applicable to directional wells and horizontal wells.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the utility model.

In the figure: 1. Upper joint; 2. Outer shell; 3. Solid soft metal body; 4. Core; 5. Fastening screw; 6. Water eye channel; 7. Internal thread.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

As shown in Figure 1, it is an embodiment of a detection well anti-stripping stamp of the present invention, including an upper joint 1, an outer shell 2, a solid soft metal body 3, a core 4 and a water eye channel 6, and the structure is simple , the increase of the outer casing 2 is beneficial to protect the solid soft metal body 3 from falling off and scratching. The top of the upper joint 1 is provided with an internal thread 7, and the internal thread on the top of the upper joint 1 is a special thread for oil oil pipes, which is used to connect oil pipelines. The lower part of the upper joint 1 is respectively provided with internal and external threads, and the upper joint 1 and the outer shell 2, and the upper joint 1 and the core 4 are connected by threads, and the threads are fixed so that the connection is tight and firm.

There are three threaded holes on the threaded connection part of the outer shell 2 and the upper joint 1, and the anti-tripping fastening screws 5 go deep into the threaded holes to tighten the external thread of the lower part of the upper joint 1 to prevent the upper joint 1 from being connected to the outer shell. 2 connection thread loose buckle, trip.

The outer shell 2 is installed on the outside of the upper joint 1, and the core 4 is installed inside the upper joint 1. Both the core 4 and the outer shell 2 are provided with supporting rings, and the supporting rings are interlaced with each other, and the soft solid metal body is poured into the outer shell. Between the body 2 and the core 4, it is fixed by a support ring, and the soft solid metal body 3 wraps the bottom of the outer shell 2, which not only increases the strength of the soft solid metal body, but also further increases the firmness and prevents it from falling off. The lower end of the anti-stripping die is provided with a 30° chamfer to prevent hanging and bumping when going down the well, and go down the well smoothly.

The water hole channel 6 connects the core 4 and the center of the soft solid metal body at the lower part of the die, and is in the shape of a longitudinal axis to prevent the imbalance of pressure difference between the inside and outside of the oil pipe, and prevent the phenomenon of "one after another" when the pipe is lifted. The ground environment is protected from pollution.

Use process:

When it is necessary to detect the "fish top" situation of falling objects in the well, connect a pipe string to the upper joint 1, and lower the anti-stripping die into the well. When it is close to the "fish top", continue to lower the pipe slowly while turning on the pump circulation When the column is close to the "fish top", clean it up and stop the pump. Continue to lower the pipe string slowly, touch the "fish top" and pressurize 30-50KN to pull out the drill. Take out the impression for analysis and judgment, and then formulate the next construction measures.

Adopting the above-mentioned technical scheme, it can be used in ordinary wells, and is also suitable for directional wells and horizontal wells. It is safe and reliable, and can well protect the soft solid metal body from falling off, and also prevent the soft solid metal body from being scraped when going down or out of the well. Touch, can accurately judge the imprint.

Claims (3)

1. An anti-stripping die for a detection well, including an upper joint (1), an outer shell (2), a solid soft metal body (3), a core (4), and a water eye channel (6); the upper joint The upper part of (1) is provided with internal thread (7), and the lower part is respectively provided with internal and external threads; the upper joint (1) and the outer shell (2), the upper joint (1) and the core (4) are connected by threads ; The core (4) and the outer casing (2) are provided with supporting rings; the soft solid metal body is poured between the outer casing (2) and the core (4); the soft solid metal body Enclose the bottom of the outer casing (2); it is characterized in that: more than one threaded hole is provided at the threaded connection part of the outer casing (2) and the upper joint (1), and a fastening screw is arranged in the threaded hole ( 5). 2. An anti-stripping die for detection wells according to claim 1, characterized in that the one or more threaded holes are three threaded holes. 3. The anti-stripping stamp of the detection well according to claim 1, characterized in that the lower end of the anti-stripping stamp is provided with a 30° chamfer.