Tapered lead mold for oil field

Abstract

The utility model belongs to the technical field of lead mould, especially relate to oil field taper lead mould, including the short circuit pipe, the coaxial joint of short circuit pipe's top end has the coupling, the low end detachable installation of short circuit pipe has the conical lead mould, conical lead mould is fixed with the ring -shaped disc close to one end of short circuit pipe, the one end fixed with the clamping pipe close to the ring -shaped disc of short circuit pipe, the one end of clamping pipe close to short circuit pipe is seted up and has the clamping groove, the one end of short circuit pipe close to conical lead mould installs the clamping assembly, and two movable ends of clamping assembly all install with the semicircular clamping plate of clamping groove. This oil field taper lead mould, through clamping assembly drive two semicircular clamping plate and the clamping between groove, realize the detachable connection between short circuit pipe and conical lead mould, the design of local partial body can keep short circuit pipe and coupling when replacing conical lead mould, and short circuit pipe and coupling can not be discarded repeatedly, avoid the problem of traditional material waste, and then reduce the use cost of consumable.

Description

Technical Field

[0001] This utility model relates to the field of lead mold technology, and in particular to conical lead molds for oil fields. Background Technology

[0002] In oilfield exploration and development, conical lead molds are a key tool widely used in downhole operations for deformation detection and repair of components such as casing and wellbore. Their working principle involves contacting the conical structure with the downhole environment, utilizing the high plasticity and recordability of lead to obtain deformation traces of downhole tools or tubing, thus providing data support for subsequent operations.

[0003] Conical lead molds are prone to surface wear or local damage during downhole operations due to friction, compression, or corrosion. Since the lead mold body, short pipe, and coupling are rigidly connected as an integral structure, even if only the lead mold surface is damaged, the entire mold needs to be replaced. This results in the discarding of reusable components such as short pipes and couplings, leading to material waste and significantly increasing the material costs of frequently replacing the entire lead mold. Utility Model Content

[0004] In order to overcome the defects of the prior art mentioned above, the inventors conducted in-depth research and, after a great deal of creative work, completed this utility model.

[0005] Specifically, the technical problem to be solved by this utility model is to provide a conical lead mold for oil fields, so as to solve the technical problem that the current lead mold body, short pipe and coupling are rigidly connected as an integrated structure, which greatly increases the material cost of frequent replacement of the whole lead mold.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A conical lead mold for oil fields includes a short connecting pipe, the top of which is coaxially welded with a coupling, and the bottom of which is detachably fitted with a conical lead mold.

[0008] An annular disc is fixed to one end of the conical lead mold near the short tube, and a clamping tube is fixed to one end of the annular disc near the short tube. A clamping groove is opened at one end of the clamping tube near the short tube. A clamping assembly is installed at one end of the short tube near the conical lead mold. Both movable ends of the clamping assembly are equipped with semi-circular clamping plates that engage with the clamping grooves, and the two semi-circular clamping plates are combined together to form a circle.

[0009] As an improved technical solution, limiting slides connected to the reinforcing holes are provided on both sides of the peripheral surface of the clamping tube and inside the reinforcing holes, and clamping rods that engage with the limiting slides are welded to the middle of the opposite surfaces of the two semi-circular clamping plates.

[0010] As an improved technical solution, the clamping assembly includes a collar that slides vertically on the short tube, and two T-shaped plates placed on both sides of the short tube. A semi-circular clamping plate is fixed to the bottom end of the T-shaped plate. A T-shaped rod is slidably installed on the T-shaped plate through a sliding hole. A spring is sleeved on the horizontal end of the T-shaped rod on the side of the T-shaped plate away from the collar. A blocking ring is installed on the horizontal end of the T-shaped rod on the side of the T-shaped plate away from the spring to block the T-shaped plate.

[0011] As an improved technical solution, limit guide strips are fixed on both sides of the periphery of the short pipe. Block 1 and block 2 are fixed on the end of the limit guide strip near the coupling, and the collar is located between block 1 and block 2. Limit grooves are opened on both sides of the inner wall of the collar, and the collar slides and limits the movement of the limit guide strip through the limit groove.

[0012] As an improved technical solution, protrusions are welded to both sides of the bottom of the collar and near the T-shaped plate. Magnetic block one and magnetic block two are respectively embedded in the side of the protrusions near the protrusions, and magnetic block three is embedded in the side of the T-shaped plate near the protrusions. Magnetic block one and magnetic block three are in a magnetic attraction state, and magnetic block two and magnetic block three are in a magnetic repulsion state.

[0013] As an improved technical solution, weight blocks are installed on both sides of the top of the collar, and the weight blocks are arranged in an arc shape.

[0014] As an improved technical solution, a limiting slide is provided on both sides of the inner wall of the clamping tube, offset from the position of the reinforcing hole, and the clamping tube and the short tube are limited to slide by the limiting guide strip and the limiting slide.

[0015] After adopting the above technical solution, the beneficial effects of this utility model are:

[0016] 1. In this utility model, the limiting guide strip enters the limiting slide to limit the left and right movement between the short pipe and the clamping pipe, thereby achieving self-alignment of the clamping rod and the reinforcing hole. This eliminates the need for manual alignment of the clamping rod and the reinforcing hole, reducing the complexity of use. Furthermore, when the semi-circular clamping plate enters the groove, the clamping rod will also simultaneously enter the reinforcing hole, which helps to strengthen the stability of the connection between the short pipe and the conical lead mold and prevents the conical lead mold from rotating relative to itself. Under the pressure of the weight block, the magnetic blocks one and three maintain their magnetic adsorption state. Under the action of magnetic adsorption and the elastic reset of the spring, the semi-circular clamping plate is stably and firmly clamped inside the groove.

[0017] 2. This utility model achieves a detachable connection between the short tube and the conical lead mold by driving the two semi-circular clamping plates and the slot through the clamping component. The partial split design allows the short tube and the coupling to be retained when the conical lead mold is replaced. The reusable short tube and coupling will not be discarded, avoiding the problem of traditional material waste and thus reducing the cost of consumables. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0019] Figure 1 This is a schematic diagram of the overall structure of the conical lead mold for oil fields according to this utility model.

[0020] Figure 2 This is a schematic diagram of the conical lead mold for oilfield use according to this utility model.

[0021] Figure 3 This is a schematic diagram of the short pipe and clamping assembly of the conical lead mold for oil fields according to this utility model.

[0022] Figure 4 This is a schematic diagram of the clamping assembly of the conical lead mold for oil fields according to this utility model.

[0023] Figure 5 This is a schematic diagram of the partial separation structure of the protrusion and T-shaped plate of the conical lead mold for oil fields according to this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Short connecting pipe; 11. Block 1; 12. Block 2; 13. Limiting guide strip; 2. Coupling; 3. Conical lead mold; 4. Annular disc; 5. Clamping pipe; 51. Clamping groove; 52. Reinforcing hole; 53. Limiting slide; 6. Clamping assembly; 61. Collar; 62. Weight block; 63. Limiting slide groove; 64. Protrusion; 65. T-shaped plate; 66. Spring; 67. T-shaped rod; 68. Blocking ring; 69. Magnetic block 1; 610. Magnetic block 2; 7. Semi-circular clamping plate; 8. Clamping rod. Detailed Implementation

[0026] 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.

[0027] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0028] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0029] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0030] like Figures 1 to 5 As shown in the figure, this embodiment provides a conical lead mold for oil fields. This conical lead mold for oil fields includes a short pipe 1. A coupling 2 is coaxially welded to the top of the short pipe 1. A conical lead mold 3 is detachably installed at the bottom of the short pipe 1. A water hole coaxial with and connected to the short pipe 1 is opened at the center of the conical lead mold 3.

[0031] An annular disk 4 is fixed to one end of the conical lead mold 3 near the short tube 1. A clamping tube 5 is fixed to one end of the annular disk 4 near the short tube 1. A clamping groove 51 is opened at one end of the clamping tube 5 near the short tube 1. A clamping component 6 is installed at one end of the short tube 1 near the conical lead mold 3. Both movable ends of the clamping component 6 are equipped with semi-circular clamping plates 7 that engage with the clamping grooves 51, and the two semi-circular clamping plates 7 are combined together to form a circle.

[0032] The clamping component 6 drives the two semi-circular clamping plates 7 to engage with the slot 51, achieving a detachable connection between the short tube 1 and the conical lead mold 3. The partially modular design allows the short tube 1 and the coupling 2 to be retained when the conical lead mold 3 is replaced. The reusable short tube 1 and coupling 2 will not be discarded, avoiding the problem of traditional material waste and thus reducing the cost of consumables.

[0033] like Figures 1 to 4 As shown in the figure, in this embodiment, limiting slides 53 connected to the reinforcing holes 52 are provided on both sides of the periphery of the clamping pipe 5. The middle of the opposite sides of the two semi-circular clamping plates 7 are welded with clamping rods 8 that engage with the limiting slides 53. When the semi-circular clamping plate 7 enters the interior of the clamping groove 51, the clamping rods 8 will also move into the interior of the reinforcing holes 52 at the same time, which helps to strengthen the stability of the connection between the short pipe 1 and the conical lead mold 3 and prevent the conical lead mold 3 from rotating relative to itself.

[0034] like Figure 4 As shown, in this embodiment, the clamping assembly 6 includes a collar 61 that slides vertically on the short tube 1, and two T-shaped plates 65 placed on both sides of the short tube 1. A semi-circular clamping plate 7 is fixed to the bottom end of the T-shaped plate 65. A T-shaped rod 67 is slidably installed on the T-shaped plate 65 through a sliding hole. One end of the T-shaped rod 67 is welded to the outer wall of the short tube 1. A spring 66 is sleeved on the horizontal end of the T-shaped rod 67 on the side of the T-shaped plate 65 away from the collar 61. A blocking ring 68 is installed on the horizontal end of the T-shaped rod 67 on the side of the T-shaped plate 65 away from the spring 66 to block the T-shaped plate 65.

[0035] like Figures 1 to 4 As shown in the figure, in this embodiment, both sides of the periphery of the short pipe 1 are fixed with limiting guide strips 13. The end of the limiting guide strip 13 near the coupling 2 is respectively fixed with a first blocking block 11 and a second blocking block 12, and the collar 61 is located between the first blocking block 11 and the second blocking block 12. Both sides of the inner wall of the collar 61 are provided with limiting grooves 63, and the collar 61 slides and is limited by the limiting grooves 63 and the limiting guide strips 13.

[0036] like Figure 5 As shown, in this embodiment, protrusions 64 are welded to both sides of the bottom of the collar 61 and near the T-shaped plate 65. Magnetic block 69 and magnetic block 610 are respectively inlaid on the side of the protrusions 64 near the protrusions 64. Magnetic block 3 is inlaid on the side of the T-shaped plate 65 near the protrusions 64. Magnetic block 69 and magnetic block 3 are in a magnetic attraction state, while magnetic block 610 and magnetic block 3 are in a magnetic repulsion state.

[0037] like Figures 1 to 4As shown in the figure, in this embodiment, weight blocks 62 are installed on both sides of the top of the collar 61, and the weight blocks 62 are arranged in an arc shape. Under the pressure of the weight blocks 62, the magnetic adsorption state of magnetic block 1 69 and magnetic block 3 is maintained. Under the magnetic adsorption and the elastic reset of the spring 66, the semi-circular card plate 7 is stably and firmly stuck in the inside of the card slot 51.

[0038] like Figures 1 to 3 As shown in the figure, in this embodiment, a limiting slide 53 is provided on both sides of the inner wall of the clamping tube 5, offset from the position of the reinforcing hole 52. The clamping tube 5 and the short tube 1 are limited to slide by the limiting guide strip 13 and the limiting slide 53. When the short tube 1 enters the interior of the clamping tube 5, the limiting guide strip 13 is aligned with the limiting slide 53, so that the limiting guide strip 13 enters the interior of the limiting slide 53 to limit the left and right movement between the short tube 1 and the clamping tube 5. This achieves self-alignment of the clamping rod 8 and the reinforcing hole 52, eliminating the need for manual alignment of the clamping rod 8 and the reinforcing hole 52, thus reducing the cumbersomeness of use.

[0039] In use, in the initial state, magnetic block 169 and magnetic block 3 are magnetically attracted to each other;

[0040] The installation process of the short pipe 1 and the conical lead mold 3 is as follows: Place the conical lead mold 3 flat on the ground, move the collar 61 toward the direction of the coupling 2, so that the magnetic block 1 69 and the magnetic block 3 are misaligned, so that the magnetic block 2 610 is directly opposite the magnetic block 3. Under the magnetic repulsion, the T-shaped plate 65 is pushed outward and the spring 66 is compressed, thus widening the gap between the two semi-circular clamping plates 7.

[0041] Subsequently, the short tube 1 is inserted into the inside of the card tube 5, with the bottom end of the short tube 1 abutting against the upper surface of the annular disk 4. The collar 61 is then lowered, and the magnetic block 2 610 is offset from the magnetic block 3. The magnetic block 1 69 is directly opposite the magnetic block 3. Under the elastic action of the spring 66, the T-shaped plate 65 is pushed downwards towards the square shape of the short tube 1, so that the two semi-circular card plates 7 are locked inside the card slot 51, thus realizing the detachable connection between the short tube 1 and the conical lead mold 3.

[0042] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A conical lead mold for oil fields, characterized in that: Includes a short pipe (1), the top end of which is coaxially welded with a coupling (2), and the bottom end of which is detachably installed with a conical lead mold (3). The conical lead mold (3) is fixed with an annular disk (4) at one end near the short tube (1), and a retaining tube (5) is fixed at one end of the annular disk (4) near the short tube (1). A retaining groove (51) is provided at one end of the retaining tube (5) near the short tube (1). A clamping assembly (6) is installed at one end of the short tube (1) near the conical lead mold (3). Both movable ends of the clamping assembly (6) are equipped with semi-circular retaining plates (7) that engage with the retaining groove (51), and the two semi-circular retaining plates (7) are combined together to form a circle.

2. The conical lead mold for oilfields according to claim 1, characterized in that: On both sides of the periphery of the clamping tube (5) and inside the reinforcing hole (52), a limiting slide (53) connected to the reinforcing hole (52) is provided. The middle of the opposite sides of the two semi-circular clamping plates (7) is welded with a clamping rod (8) that engages with the limiting slide (53).

3. The conical lead mold for oilfields according to claim 2, characterized in that: The clamping assembly (6) includes a collar (61) that slides vertically on the short tube (1) and two T-shaped plates (65) placed on both sides of the short tube (1). A semi-circular clamping plate (7) is fixed to the bottom end of the T-shaped plate (65). A T-shaped rod (67) is slidably installed on the T-shaped plate (65) through a sliding hole. A spring (66) is sleeved on the horizontal end of the T-shaped rod (67) on the side of the T-shaped plate (65) away from the collar (61). A blocking ring (68) is installed on the horizontal end of the T-shaped rod (67) on the side of the T-shaped plate (65) away from the spring (66) to block the T-shaped plate (65).

4. The conical lead mold for oilfields according to claim 3, characterized in that: Limiting guide strips (13) are fixed on both sides of the periphery of the short pipe (1). The end of the limiting guide strip (13) near the coupling (2) is fixed with a first blocking block (11) and a second blocking block (12). The collar (61) is located between the first blocking block (11) and the second blocking block (12). Limiting grooves (63) are opened on both sides of the inner wall of the collar (61). The collar (61) slides and is limited by the limiting grooves (63) and the limiting guide strips (13).

5. The conical lead mold for oilfields according to claim 4, characterized in that: On both sides of the bottom of the collar (61) and near the T-shaped plate (65), there are protrusions (64). On the side of the protrusions (64) near the protrusions (64), there are magnetic blocks one (69) and magnetic blocks two (610) respectively. On the side of the T-shaped plate (65) near the protrusions (64), there is a magnetic block three. Magnetic blocks one (69) and magnetic blocks three are in a magnetic attraction state, and magnetic blocks two (610) and magnetic blocks three are in a magnetic repulsion state.

6. The conical lead mold for oilfields according to claim 5, characterized in that: The top of the collar (61) is equipped with weight blocks (62) on both sides, and the weight blocks (62) are arranged in an arc shape.

7. The conical lead mold for oilfields according to claim 6, characterized in that: Limiting slides (53) are provided on both sides of the inner wall of the clamping pipe (5) at positions offset from the reinforcing holes (52), and the clamping pipe (5) and the short pipe (1) are limited to slide by the limiting guide strip (13) and the limiting slide (53).

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