Petroleum drilling casing grouting device

Abstract

The utility model relates to the technical field of petroleum drilling auxiliary equipment, in particular to a petroleum drilling casing grouting device which comprises a casing, a main body component is arranged at the top of the casing and comprises a grouting pipe, the bottom end of the grouting pipe is installed inside the top end of the casing, and a sealing rubber gasket is arranged on the outer wall of the grouting pipe. The bottom end of the grouting pipe is located in the top end of the casing pipe after a certain number of casing pipes are placed, the conical body of the grouting pipe meets the requirements of the sizes of the casing pipes of multiple specifications, and the grouting pipe has the advantages of being simple in structure, convenient to use and high in practicability. And meanwhile, the device is provided with the safety rope for fixing, so that the accident that the pipeline flies out to hurt people is avoided, the production continuity of an enterprise is guaranteed, and personal injury, equipment damage and complex underground accidents are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oil drilling auxiliary equipment, in particular to an oil drilling casing grouting device. Background Technique

[0002] The casing is a pipe string that needs to be lowered into the well when the drilling construction is completed, and is used to isolate the formation, so as to ensure the safety of the wellbore, avoid collapse, and prevent the intrusion of formation fluids. When a certain number of casings are lowered, drilling fluid needs to be poured into the casing, and the grouting frequency is relatively high.

[0003] In recent years, with the continuous increase of drilling depth and the depth of casing lowering, during grouting, incidents of pipeline flying out and injuring people have occurred from time to time. In recent years' practice, incidents such as poor cooperation of operators resulting in the pipeline flying out and injuring people, mud spraying out, and environmental protection risks have occurred. Due to the occurrence of these incidents, the improvement of equipment technology has to be considered. Therefore, we propose an oil drilling casing grouting device to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art, and to propose an oil drilling casing grouting device.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: an oil drilling casing grouting device, including a casing, a main body component is arranged at the top of the casing, the main body component includes a grouting pipe, the bottom end of the grouting pipe is installed inside the top end of the casing, a sealing rubber gasket is arranged on the outer wall of the grouting pipe, the outer wall of the sealing rubber gasket is attached to the inner side wall of the casing, an exhaust component is arranged at the top of the grouting pipe, the exhaust component includes an air pipe, the air pipe is vertically arranged at the top end of the grouting pipe, exhaust holes are arranged on the side wall of the top end of the air pipe, the number of the exhaust holes is multiple, an observation hole is arranged at the top end of the air pipe, a slurry discharge pipe is horizontally communicated with the left side wall of the air pipe, and a union is arranged at the end of the slurry discharge pipe.

[0006] Further:

[0007] Lifting lugs are arranged on the outer side wall of the casing, and the number of the lifting lugs is two.

[0008] Further:

[0009] The shape of the grouting pipe is set to be conical.

[0010] Further:

[0011] The outer sidewall of the grouting pipe is fixedly connected with lifting lugs. The number of the lifting lugs is two, and the two lifting lugs are symmetrically arranged with respect to the vertical central axis of the grouting pipe. Safety ropes are installed on the outer walls of the two lifting lugs, and the end parts of the two safety ropes are respectively fixedly connected with two lifting clamps.

[0012] Furthermore:

[0013] A grouting component is arranged at the top of the grouting pipe. The grouting component includes an input pipe. The top end of the input pipe is connected with a grouting pipeline through a flange. A through hole is vertically formed through the top end of the grouting pipe, and the bottom end of the input pipe vertically penetrates through the through hole and extends into the interior of the grouting pipe.

[0014] Furthermore:

[0015] The bottom end of the input pipe is in a 45-degree bevel shape.

[0016] The utility model has the following beneficial effects:

[0017] Compared with the prior art, for this oil drilling casing grouting device, after a certain number of casings are lowered, the bottom end of the grouting pipe is located inside the top end of the casing. The conical body of the grouting pipe meets the sizes of multiple specifications of casings, which can improve work efficiency. At the same time, the device is provided with safety ropes for fixation, preventing the occurrence of incidents where the pipeline flies out and injures people, ensuring the continuity of enterprise production, and reducing personal injuries, equipment damage, and downhole complex accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic view of the overall structure of the utility model from the first perspective;

[0019] Figure 2 is a schematic view of the overall structure of the utility model from the second perspective;

[0020] Figure 3 is a cross-sectional view of the overall structure of the utility model;

[0021] Figure 4 is an exploded view of a partial structure of the utility model.

[0022] LEGEND DESCRIPTION:

[0023] 100, casing; 110, lifting clamp; 200, main body component; 210, grouting pipe; 220, sealing rubber gasket; 230, lifting lug; 240, safety rope; 300, exhaust component; 310, air pipe; 320, exhaust hole; 330, observation hole; 340, slurry discharge pipe; 350, union; 400, grouting component; 410, input pipe; 420, grouting pipeline; 430, through hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Refer toFigures 1-4 The utility model provides a grouting device for an oil drilling casing, which comprises a casing 100, a main body component 200, an exhaust component 300 and a grouting component 400.

[0025] For the casing 100, specifically, lifting lugs 110 are arranged on the outer side wall of the casing 100, and the number of the lifting lugs 110 is two. During actual use, the casing 100 is a pipe string that needs to be lowered into the well after the drilling construction is completed, and is used to isolate the formation, so as to ensure the safety of the wellbore, avoid collapse, and prevent the intrusion of formation fluids. The lifting lugs 110 are used to cooperate with the safety ropes 240 and the lifting ears 230 to fix the grouting pipe 210 and ensure the stability during installation.

[0026] The main body component 200 is used to support each component and can ensure the stability when the grouting pipe 210 is installed on the casing 100. Specifically, the main body component 200 includes a grouting pipe 210. The bottom end of the grouting pipe 210 is installed inside the top end of the casing 100. A sealing rubber gasket 220 is arranged on the outer wall of the grouting pipe 210, and the outer wall of the sealing rubber gasket 220 is attached to the inner side wall of the casing 100. The sealing rubber gasket 220 is used to protect the thread of the casing 100 boring and avoid thread damage. Two lifting ears 230 are fixedly connected to the outer side wall of the grouting pipe 210, and the two lifting ears 230 are symmetrically arranged with respect to the vertical central axis of the grouting pipe 210. Safety ropes 240 are installed on the outer walls of the two lifting ears 230, and the end parts of the two safety ropes 240 are respectively fixedly connected to the two lifting lugs 110. During actual use, when the casing 100 is lowered, first, the bottom end of the grouting pipe 210 is placed inside the top end of the casing 100. At the same time, the sealing rubber gasket 220 arranged on the outer wall of the grouting pipe 210 will be attached to the inner side wall of the casing 100. Since the grouting pipe 210 is designed in a conical shape, it can meet the needs of various specifications of the casing 100, and the conical design can close the boring of the casing 100, prevent falling objects from falling in, and is more stable, avoiding the uncontrolled outflow of fluid from the casing 100. Then, the two safety ropes 240 on the outer walls of the two lifting ears 230 are respectively fixedly connected to the two lifting lugs 110 to ensure the stability of the grouting pipe 210 during installation and prevent the freezing and blocking of the near-wellhead grouting pipeline 420, resulting in the uncontrolled ejection of the grouting pipe 210 from the casing 100.

[0027] The exhaust component 300 can exhaust the air inside the grouting pipe 210 and the casing 100. Specifically, the exhaust component 300 includes an air pipe 310. The air pipe 310 is vertically arranged at the top end of the grouting pipe 210. An exhaust hole 320 is provided on the side wall at the top end of the air pipe 310. The number of exhaust holes 320 is multiple. An observation hole 330 is provided at the top end of the air pipe 310. A slurry discharge pipe 340 is horizontally connected to the left side wall of the air pipe 310. A union 350 is provided at the end of the slurry discharge pipe 340. Specifically, during use, when grouting, the boring of the casing 100 is sealed, making the inside of the casing 100 a closed space. The gas space is occupied by the liquid space. Based on the principle of gas upward migration, the density of the liquid (mud) is greater than that of air. Under the action of its own gravity, the mud sinks deep into the casing 100. A large amount of gas is squeezed by the liquid and moves vertically upward. The gas will be discharged through the multiple exhaust holes 320 on the air pipe 310. When grouting reaches the boring of the casing 100, the excess drilling fluid is recovered and flowed into the well through the slurry discharge pipe 340.

[0028] The grouting component 400 is used to grout the inside of the casing 100. Specifically, the grouting component 400 includes an input pipe 410. The top end of the input pipe 410 is connected to a grouting pipeline 420 through a flange. A through hole 430 is vertically penetrated and provided at the top end of the grouting pipe 210. The bottom end of the input pipe 410 vertically penetrates the through hole 430 and extends into the inside of the grouting pipe 210. The bottom end of the input pipe 410 is in a 45-degree bevel shape. Specifically, during use, the grouting pipeline 420 grouts into the inside of the casing 100 through the input pipe 410. The input pipe 410 extends downward 200 mm inside the grouting pipe 210, and the end is in a 45-degree bevel shape, which can prevent the mud from splashing and overflowing from the exhaust hole 320 or the slurry discharge pipe 340 during input. At the same time, the bevel is used to make the drilling fluid tend to one side when falling into the casing 100, facilitating sufficient space channels for the air to rise and be displaced.

[0029] Working principle: During specific use, when the casing 100 is lowered, first, the bottom end of the grouting pipe 210 is located inside the top end of the casing 100. At the same time, the sealing rubber gasket 220 provided on the outer wall of the grouting pipe 210 will fit against the inner side wall of the casing 100. Due to the conical design of the grouting pipe 210, it can meet the needs of various specifications of the casing 100, and the conical design can seal the boring of the casing 100, prevent objects from falling in, and is more stable, avoiding the uncontrolled outflow of fluid from the casing 100. Then, the two safety ropes 240 on the outer walls of the two lifting lugs 230 are respectively fixedly connected to the two elevators 110 to ensure the stability of the grouting pipe 210 during installation and prevent the freezing and blockage of the grouting pipeline 420 near the wellhead, resulting in the uncontrolled ejection of the grouting pipe 210 from the casing 100.

[0030] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A casing grouting device for oil drilling, comprising a casing (100), characterized in that: A main body component (200) is arranged at the top of the casing (100), and the main body component (200) comprises a grouting pipe (210). The bottom end of the grouting pipe (210) is installed inside the top end of the casing (100). A sealing rubber gasket (220) is arranged on the outer wall of the grouting pipe (210). The outer wall of the sealing rubber gasket (220) is in contact with the inner wall of the casing (100). An exhaust component (300) is arranged at the top of the grouting pipe (210). The exhaust component (300) comprises an air pipe (310), the air pipe (310) being vertically connected to the top end of the grouting pipe (210), the top end side wall of the air pipe (310) being provided with an exhaust hole (320), the number of the exhaust holes (320) being plural, the top end of the air pipe (310) being provided with an observation hole (330), the left side wall of the air pipe (310) being horizontally connected with a grouting pipe (340), the end of the grouting pipe (340) being provided with a union (350).

2. A petroleum drilling casing grouting device according to claim 1, characterized in that: The outer side wall of the sleeve (100) is provided with hanging clips (110), and the number of the hanging clips (110) is two.

3. The oil drilling casing grouting device according to claim 1, characterized in that: The grouting pipe (210) is configured to be conical in shape.

4. A petroleum drilling casing grouting device according to claim 2, characterized in that: A lifting lug (230) is fixedly connected to the outer wall of the grouting pipe (210), the number of the lifting lugs (230) is two, the two lifting lugs (230) are symmetrically arranged relative to the vertical center axis of the grouting pipe (210), and the outer walls of the two lifting lugs (230) are both installed with a safety rope (240), and the ends of the two safety ropes (240) are respectively fixedly connected to the two hanging cards (110).

5. The oil drilling casing grouting device according to claim 1, characterized in that: A grouting component (400) is arranged at the top of the grouting pipe (210), and the grouting component (400) comprises an input pipe (410), the top end of the input pipe (410) is connected to a grouting pipeline (420) via a flange, a through hole (430) is vertically penetrated through the top end of the grouting pipe (210), and the bottom end of the input pipe (410) vertically penetrates the through hole (430) and extends to the inside of the grouting pipe (210).

6. The oil well casing grouting device according to claim 5, characterized in that: The bottom end of the input pipe (410) is in a 45-degree bevel shape.

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