A special directional soft formation broken drill pipe fishing device

Abstract

The present application provides a directional special soft formation broken drill pipe salvage device, which includes a guide hook plate, a trumpet-shaped sleeve and a connecting piece; the guide hook plate has a trumpet mouth, which is used to hook and lock the broken drill pipe; the large end of the trumpet-shaped sleeve is fixedly installed on the guide hook plate, and the small end is sleeved on the connecting piece, and the axis of the trumpet-shaped sleeve and the axis of the trumpet mouth are on the same straight line, which is used to lock the broken drill pipe on the connecting piece. The device has a simple structure, is easy to use, has a wide range of applications, and is highly practical.

Description

Technical Field

[0001] The present application relates to the field of drilling, and in particular to a directional special-purpose soft formation broken drill pipe salvage device. Background Art

[0002] During directional drilling, when the drill pipe is guiding or expanding the hole in soft strata, the drill pipe may break due to objective or non-objective reasons on site. The general way to salvage the broken drill pipe is to use a cone to remove the broken drill pipe along the original hole. There are many uncertainties in using a cone. The most important one is that it cannot guarantee that the fracture can be found along the original hole, resulting in a waste of time, which ultimately affects the subsequent construction of the project and causes huge losses to the project. Summary of the invention

[0003] One of the purposes of the present application is to provide a special soft formation broken drill pipe salvage device for directional drilling, so as to solve the problem that the broken drill pipe of the existing trenchless directional drilling cannot be located and connected in the deep soft formation.

[0004] The technical solution of this application is:

[0005] A directional special soft formation broken drill rod salvage device, comprising a guide hook plate, a trumpet-shaped sleeve and a connecting piece; the guide hook plate has a trumpet mouth, which is used to hook and lock the broken drill rod; the large end of the trumpet-shaped sleeve is fixedly mounted on the guide hook plate, and the small end is sleeved on the connecting piece, and the axis of the trumpet-shaped sleeve is on the same straight line as the axis of the trumpet mouth, which is used to lock the broken drill rod on the connecting piece.

[0006] As a technical solution of the present application, the guide hook plate includes a hook plate, a guide plate and a pressure-bearing clamping plate that are integrally formed and connected in sequence; the guide plate is provided with an arc-shaped guide opening, the arc-shaped guide opening passes through the middle part from one side end of the guide plate, and the opening diameter gradually decreases from one side end of the guide plate to the middle part; the hook plate and the pressure-bearing clamping plate are respectively located at both ends of the arc-shaped guide opening at intervals, and the hook plate and the pressure-bearing clamping plate are on different planes, and together constitute the bell mouth for hooking and locking the broken drill rod; the bell mouth is connected to the arc-shaped guide opening.

[0007] As a technical solution of the present application, the hook-shaped plate is in a hook-shaped structure, and the pressure-bearing clamping plate is in a folded structure.

[0008] As a technical solution of the present application, the trumpet-shaped sleeve includes the big end and the small end that are connected; the big end is a conical cylindrical structure, and its diameter is larger than the diameter of the small end; the other opposite side end of the guide plate is fixedly inserted into the big end; the small end is a cylindrical structure, and is on the same straight line as the axis of the big end.

[0009] As a technical solution of the present application, the connecting piece includes a female cone connector, a male cone connector or a slip connector.

[0010] Beneficial effects of this application:

[0011] The directional special soft formation broken drill rod salvage device of the present application can solve the problem of quickly connecting the broken drill rod after the non-excavation directional drill rod is broken in the deep soft formation, and quickly pull it out of the ground to reduce engineering losses. The device has a simple structure, is easy to use, has high salvage efficiency, is safe and reliable, has low construction cost, is easy to operate, saves time and effort, and has accurate positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 A schematic diagram of an exploded view of a directional soft formation broken drill pipe salvage device provided in an embodiment of the present application;

[0014] Figure 2 A schematic diagram of a guide hook plate provided in an embodiment of the present application;

[0015] Figure 3 Schematic diagram of the guide plate provided in an embodiment of the present application.

[0016] Icons: 1-guide hook plate; 2-trumpet-shaped sleeve; 3-connecting piece; 4-trumpet mouth; 5-broken drill rod; 6-hook plate; 7-guide plate; 8-pressure-bearing clamping plate; 9-arc-shaped guide mouth. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0019] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0020] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the inventive product is usually placed when in use. These are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0021] In addition, in the present application, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0022] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0023] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0024] Example:

[0025] Please refer to Figure 1 , with reference Figures 2 to 3The present application provides a directional special soft formation broken drill pipe salvage device, comprising a guide hook plate 1, a trumpet-shaped sleeve 2 and a connecting piece 3; wherein the guide hook plate 1 has a trumpet mouth 4 for hooking and locking the broken drill pipe 5; at the same time, the large end of the trumpet-shaped sleeve 2 is fixedly mounted on the guide hook plate 1, and the small end is sleeved on the connecting piece 3, and the axis of the trumpet-shaped sleeve 2 is on the same straight line as the axis of the trumpet mouth 4, which is used to lock the broken drill pipe 5 on the connecting piece 3.

[0026] Furthermore, in the present embodiment, the guide hook plate 1 comprises a hook plate 6, a guide plate 7 and a pressure-bearing clamping plate 8 which are integrally formed and sequentially connected; at the same time, the guide plate 7 is provided with an arc-shaped guide opening 9, which passes through the middle part from one side end of the guide plate 7, and the opening diameter gradually decreases from one side end of the guide plate 7 to the middle part; the hook plate 6 and the pressure-bearing clamping plate 8 are respectively located at both ends of the arc-shaped guide opening 9 at intervals, and the hook plate 6 and the pressure-bearing clamping plate 8 are located on different planes, and together constitute a bell mouth 4 for hooking and locking the broken drill rod 5; the bell mouth 4 is connected to the arc-shaped guide opening 9, and the function of the bell mouth 4 is to guide the broken drill rod 5 into the guide hook plate 1 after touching the broken drill rod 5. The function of the hook plate 6 is to allow the broken drill rod 5 entering the guide hook plate 1 to enter the arc-shaped guide port 9 smoothly; at the same time, the hook plate 6 can prevent the broken drill rod 5 entering the guide hook plate 1 from easily falling out of the guide hook plate 1 during the pull-back process; and the function of the arc-shaped guide port 9 is to allow the broken drill rod 5 to enter the center position of the guide hook plate 1 to fix the position when it subsequently enters the sleeve of the bell mouth 4.

[0027] It should be noted that the hook plate 6 is a hook-shaped structure, and the pressure-bearing clamping plate 8 is a folded structure.

[0028] At the same time, the trumpet-shaped sleeve 2 includes a large end and a small end that are connected; the large end is a conical cylindrical structure, and its diameter is larger than that of the small end; the other opposite side end of the guide plate 7 is fixedly inserted into the large end; the small end is a cylindrical structure, and is on the same straight line as the axis of the large end.

[0029] Specifically, the connector 3 may be a female cone connector, a male cone connector or a slip connector, and may be threadedly connected or clamped to the broken drill rod 5 .

[0030] It should be noted that when a drill pipe breaks during construction, the only data that can be determined is the length of the break point, and the specific location of the break point in the stratum space cannot be determined. Usually, when salvaging such a broken drill pipe 5, a sleeve is used to install a connector, and then the salvage head is inserted into the hole to the corresponding part of the broken drill pipe 5, but whether it can be connected depends on luck, which greatly affects the smooth progress of the project.

[0031] Therefore, when using the tool, a connector 3 is selected according to the actual situation, one of the female cone connector, the male cone connector or the slip connector, and then installed in the sleeve of the bell mouth 4, and the guide instrument is connected to the rear of the connector 3. After the tool is installed, it is first sent into the hole along the hole, and the data of the guide instrument is compared with the previous guide data. After reaching the relative length position of the broken drill rod 5, the guide function of the guide hook plate 1 is used to fully advance the broken drill rod 5 in the broken drill rod 5 area to an angle of 360°. After the broken drill rod 5 is found, the mutual distance is judged to adjust the angle and position of the tool (try to be at the same angle). After adjusting the tool, push it forward a little bit to let the broken drill rod 5 slide into the guide hook plate 1, then slowly pull it back. After the pull force increases, it is judged that the guide hook plate 1 has hooked the broken drill rod 5. Then continue to pull and let the guide hook plate 1 slowly move backward along the broken drill rod 5. When it moves to the position where the head of the broken drill rod 5 is aligned with the sleeve of the bell mouth 4, push the tool to let the broken head of the broken drill rod 5 enter the sleeve of the bell mouth 4. After rotating and drilling, the connecting piece 3 is connected and locked with the head of the broken drill rod 5. Finally, slowly increase the pulling force. After the pulling force increases slowly without other changes, it is judged that the connection is successful. Continue to slowly increase the pulling force, and the entire drill rod begins to move, indicating that the broken drill rod 5 is successfully salvaged. Continue to pull back steadily until the broken drill rod 5 is pulled out of the ground as a whole.

[0032] In summary, the directional special soft formation broken drill rod salvage device of the present application can solve the problem of quickly connecting the broken drill rod 5 after the non-excavation directional drill rod is broken in the deep soft formation, and quickly pull it out of the ground to reduce engineering losses. The device has a simple structure, is easy to use, has high salvage efficiency, is safe and reliable, has low construction cost, is easy to operate, saves time and effort, and has accurate positioning.

[0033] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A special directional soft formation broken drill pipe fishing device, characterized in that: The invention relates to a method for locking the drill pipe in a controlled manner and a method for fixing the drill pipe in a controlled manner. The method comprises: a first locking mechanism, a second locking mechanism, a second locking mechanism for locking the drill pipe in a controlled manner, and a second locking mechanism for locking the drill pipe in a controlled manner. The method comprises: a first locking mechanism, a second locking mechanism for locking the drill pipe in a controlled manner, and a second locking mechanism for locking the drill pipe in a controlled manner. The method comprises: a first locking mechanism, a second locking mechanism for locking the drill pipe in a controlled manner, and a second locking mechanism for locking the drill pipe in a controlled manner.

2. The directional special soft formation broken drill pipe salvage device according to claim 1 is characterized in that: The hook-shaped plate is in a hook-shaped structure, and the pressure-bearing clamping plate is in a folded-line structure.

3. The directional special soft formation broken drill pipe salvage device according to claim 1 is characterized in that: The trumpet-shaped sleeve includes the big end and the small end which are connected; the big end is a tapered cylindrical structure with a diameter larger than that of the small end; the other opposite side end of the guide plate is fixedly inserted into the big end; the small end is a cylindrical structure and is on the same straight line as the axis of the big end.

4. The directional special soft formation broken drill pipe salvage device according to claim 1 is characterized in that: The connecting piece includes a female cone connector, a male cone connector or a slip connector.

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