A cement injection device for cementing

Abstract

The utility model relates to the field of well cementation technology, specifically disclose a kind of well cementation cement injection device, including cement head body, the surface of cement head body is equipped with auxiliary mechanism, the auxiliary mechanism includes the fixed plate of fixed connection in the arc surface of cement head body, the bottom of the fixed plate is fixedly connected with four clamping rods, the arc surface of cement head body is equipped with annular track frame, the bottom of the annular track frame is fixedly connected with four supports, the inner wall of the annular track frame is rotatably connected with rotating ring, the end surface of the rotating ring is provided with four clamping slots compatible with clamping rod. The utility model is supported by multiple supports and annular track frame, can support cement head body, and with the clamping of clamping rod and clamping slot, and the rotation of rotating ring inside annular track frame, can more labor-saving make cement head body rotate, avoid the situation that staff needs to support cement head body all the time as far as possible.

Description

Technical Field

[0001] This utility model belongs to the field of cementing technology, specifically relating to a cementing injection device. Background Technology

[0002] Cementing is a crucial step in oil and gas well drilling. Its core purpose is to inject cement slurry into the annular hole between the wellbore and the casing and allow it to solidify, thereby fixing the casing and sealing the wellbore, providing a safety guarantee for subsequent drilling, completion, and oil and gas extraction.

[0003] After drilling the hole, the workers need to place the casing in the hole, then install the cementing head on the casing, and then deliver cement into the cementing head. The cementing head is usually installed on the casing by a threaded connection, which requires the workers to lift the cementing head and rotate it. It is not convenient to support the cementing head and the operation is relatively laborious. Utility Model Content

[0004] The purpose of this invention is to provide a cementing injection device to solve the problem that the existing cementing head and casing connection method is relatively laborious.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A cementing injection device includes a cement head body. An auxiliary mechanism is provided on the surface of the cement head body. The auxiliary mechanism includes a fixing plate fixedly connected to the arc surface of the cement head body. Four locking rods are fixedly connected to the bottom surface of the fixing plate. An annular track frame is provided on the arc surface of the cement head body. Four supports are fixedly connected to the bottom surface of the annular track frame. A rotating ring is rotatably connected to the inner wall of the annular track frame. Four locking grooves that are adapted to the locking rods are opened on the end face of the rotating ring.

[0006] Preferably, the rotating ring has four grooves on its arc surface, and rollers are rotatably connected to the inner walls of the grooves. The arc surface of the rollers fits against the inner wall of the annular track frame.

[0007] Preferably, each of the two brackets has a rectangular hole on its surface, and an L-shaped plate is slidably connected to the inner wall of the rectangular hole. A pressing block is fixedly connected to the bottom end of the L-shaped plate. Each of the two brackets has a sliding plate slidably connected to its surface. A pressure plate is fixedly connected to the end of each sliding plate that is close to each other, and a protrusion is fixedly connected to the end of each sliding plate that is far from each other.

[0008] Preferably, a fixing rod is fixedly connected to the inner wall of the rectangular hole, and the L-shaped plate is slidably connected to the arc surface of the fixing rod.

[0009] Preferably, a first spring is sleeved on the arc surface of the fixing rod, and the two ends of the first spring are fixedly connected to the inner wall of the L-shaped plate and the rectangular hole, respectively.

[0010] Preferably, a second spring is fixedly connected to the bottom surface of the skateboard, and the other end of the second spring is fixedly connected to the bracket.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model supports the cement head body through multiple brackets and a ring track frame. With the help of the locking rod and the locking groove, as well as the rotation of the rotating ring inside the ring track frame, the cement head body can be rotated more effortlessly, minimizing the need for workers to constantly support the cement head body and making the operation easier for workers to a certain extent.

[0012] 2. When the cement head body is connected to the sleeve, this utility model can drive the L-shaped plate to move, thereby moving the two pressure plates closer to each other and squeezing the sleeve to achieve the effect of stabilizing the sleeve. This prevents the sleeve from shaking when the cement head body is rotated, improves stability, and facilitates the installation of the cement head body and the sleeve by the workers. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This utility model Figure 1 A front view structural diagram; Figure 3 This is a schematic diagram showing the disassembled structure of the cement head body and the rotating ring of this utility model; Figure 4 This is a schematic diagram of the structure of the bracket and the annular track frame of this utility model; Figure 5 This is a partial structural diagram of the L-shaped plate and the sliding plate of this utility model.

[0014] In the diagram: 1. Cement head body; 2. Auxiliary mechanism; 201. Fixing plate; 202. Clamping rod; 203. Circular track frame; 204. Bracket; 205. Rotating ring; 206. Slot; 207. Groove; 208. Roller; 209. Rectangular hole; 210. Fixing rod; 211. L-shaped plate; 212. Extrusion block; 213. Slide plate; 214. Pressure plate; 215. Protrusion; 216. First spring; 217. Second spring. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Reference Figures 1-5 As shown, this utility model provides a cementing injection device, including a cement head body 1. An auxiliary mechanism 2 is provided on the surface of the cement head body 1. The auxiliary mechanism 2 includes a fixing plate 201 fixedly connected to the arc surface of the cement head body 1. Four locking rods 202 are fixedly connected to the bottom surface of the fixing plate 201. An annular track frame 203 is provided on the arc surface of the cement head body 1. Four supports 204 are fixedly connected to the bottom surface of the annular track frame 203. A rotating ring 205 is rotatably connected to the inner wall of the annular track frame 203. Four slots 206 adapted to the locking rods 202 are opened on the end face of the rotating ring 205.

[0017] In this embodiment, by means of the engagement of the locking rod 202 and the locking groove 206, and the rotation of the rotating ring 205 inside the annular track frame 203, the cement head body 1 can be rotated more effortlessly. When the cement head body 1 contacts the sleeve, the locking rod 202 will be inserted into the locking groove 206, but the locking rod 202 will not contact the bottom of the locking groove 206. As the cement head body 1 is driven by the bottom thread, the locking rod 202 will move downward inside the locking groove 206.

[0018] In an optional embodiment: the circular surface of the rotating ring 205 is provided with four grooves 207, and the inner wall of the grooves 207 is rotatably connected to a roller 208, the circular surface of the roller 208 being in contact with the inner wall of the annular track frame 203.

[0019] It should be noted that the roller 208 serves to reduce the friction between the rotating ring 205 and the annular track frame 203.

[0020] In an optional embodiment: rectangular holes 209 are provided on the surfaces of both brackets 204, and L-shaped plates 211 are slidably connected to the inner walls of the rectangular holes 209. A pressing block 212 is fixedly connected to the bottom end of the L-shaped plates 211. Slide plates 213 are slidably connected to the surfaces of both brackets 204. A pressure plate 214 is fixedly connected to the end of the two slide plates 213 that is close to each other, and a protrusion 215 is fixedly connected to the end of the two slide plates 213 that is far from each other.

[0021] It should be noted that the bottom cross-section of the extrusion block 212 is trapezoidal, and the cross-section of the protrusion 215 is trapezoidal. When the extrusion block 212 extrudes the protrusion 215, the protrusion 215 will shrink.

[0022] In an optional embodiment: a fixing rod 210 is fixedly connected to the inner wall of the rectangular hole 209, and an L-shaped plate 211 is slidably connected to the arc surface of the fixing rod 210. A first spring 216 is sleeved on the arc surface of the fixing rod 210, and the two ends of the first spring 216 are fixedly connected to the L-shaped plate 211 and the inner wall of the rectangular hole 209, respectively.

[0023] It should be noted that the fixing rod 210 serves to limit the L-shaped plate 211, and the first spring 216 facilitates the rebound of the L-shaped plate 211.

[0024] In an optional embodiment: a second spring 217 is fixedly connected to the bottom surface of the slide plate 213, and the other end of the second spring 217 is fixedly connected to the bracket 204. It should be noted that the second spring 217 serves to cause the slide plate 213 to drive the pressure plate 214 to rebound when the pressing block 212 disengages from the pressing of the protrusion 215, thereby causing the pressure plate 214 to disengage from the pressing of the sleeve.

[0025] The working principle of this utility model is as follows: During use, after drilling, the worker inserts the casing into the borehole and places the annular track frame 203 directly above the casing. The support 204 is then in contact with the ground. Next, the threaded connector at the bottom of the cement head body 1 passes through the middle of the rotating ring 205. As the cement head body 1 moves downwards, it compresses the L-shaped plate 211, causing the L-shaped plate 211 to move the compression block 212, thus compressing the protrusion 215. The protrusion 215 has a trapezoidal cross-sectional shape. After being compressed, the sliding plate 213 moves the pressure plate 214, causing the two pressure plates 214 to move towards each other. As the cement head body 1 moves closer, both the first spring 216 and the second spring 217 are in a deformed state. As the cement head body 1 moves, the clamping rod 202 enters the clamping groove 206, and the two pressure plates 214 press against the sleeve to stabilize it. At this time, the clamping rod 202 does not contact the bottom of the clamping groove 206. Then, the worker pushes the cement head body 1 to rotate. With the help of the rotating ring 205 rotating inside the annular track frame 203 and supported by the bracket 204, the worker can rotate the cement head body 1 more easily until the cement head body 1 and the sleeve are securely installed.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] 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 described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, whether directly or indirectly applied to other related technical fields, are similarly within the scope of protection of this utility model patent.

Claims

1. A cementing injection device, comprising a cement head body (1), characterized in that, The surface of the cement head body (1) is provided with an auxiliary mechanism (2). The auxiliary mechanism (2) includes a fixing plate (201) fixedly connected to the arc surface of the cement head body (1). Four locking rods (202) are fixedly connected to the bottom surface of the fixing plate (201). The arc surface of the cement head body (1) is provided with an annular track frame (203). Four supports (204) are fixedly connected to the bottom surface of the annular track frame (203). A rotating ring (205) is rotatably connected to the inner wall of the annular track frame (203). Four slots (206) that are adapted to the locking rods (202) are opened on the end face of the rotating ring (205).

2. The cementing injection device according to claim 1, characterized in that: The rotating ring (205) has four grooves (207) on its arc surface. Rollers (208) are rotatably connected to the inner walls of the grooves (207). The arc surface of the rollers (208) fits against the inner wall of the annular track frame (203).

3. The cementing injection device according to claim 1, characterized in that: Both of the brackets (204) have rectangular holes (209) on their surfaces. An L-shaped plate (211) is slidably connected to the inner wall of the rectangular hole (209). An extrusion block (212) is fixedly connected to the bottom end of the L-shaped plate (211). Both of the brackets (204) have sliding plates (213) slidably connected to their surfaces. A pressure plate (214) is fixedly connected to the end of the two sliding plates (213) that is close to each other. A protrusion (215) is fixedly connected to the end of the two sliding plates (213) that is far from each other.

4. A cementing injection device according to claim 3, characterized in that: A fixing rod (210) is fixedly connected to the inner wall of the rectangular hole (209), and the L-shaped plate (211) is slidably connected to the arc surface of the fixing rod (210).

5. A cementing injection device according to claim 4, characterized in that: The arc surface of the fixing rod (210) is fitted with a first spring (216), and the two ends of the first spring (216) are fixedly connected to the inner wall of the L-shaped plate (211) and the rectangular hole (209), respectively.

6. A cementing injection device according to claim 3, characterized in that: The bottom surface of the slide plate (213) is fixedly connected to a second spring (217), and the other end of the second spring (217) is fixedly connected to the bracket (204).

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