Special tool for installing rubber plug on oil field well cementation cement head

Abstract

The utility model relates to the technical field of tools for installing oil field rubber plugs into cement heads, in particular to a special tool for installing oil field well cementation cement heads with rubber plugs, which comprises a cement head, a first union female buckle is fixedly connected to the lower end of the outer wall of the cement head, and a second union female buckle is clamped to the left side of the first union female buckle. The outer wall of the second union female buckle is fixedly connected with a lifting lock pin, a lifting rod is arranged in the lifting lock pin, a lifting adjusting hole is formed in the bottom of the lifting rod, the top of the lifting rod is fixedly connected with a transverse rod, a transverse adjusting hole is formed in the bottom of the transverse rod, the outer wall of the bottom end of the transverse rod is sleeved with a translation lock pin, and the bottom of the translation lock pin is fixedly connected with a first-stage hydraulic cylinder. A second-stage hydraulic cylinder is arranged in the lower end of the first-stage hydraulic cylinder, a disc is fixedly connected to the end, extending into the cement head, of the bottom of the second-stage hydraulic cylinder, and a rubber plug is installed in the top end of the cement head. According to the utility model, the rubber plug is prevented from being damaged due to uneven stress caused by the fact that the rubber plug is hit by a hammer, a rubber bowl and a hard rubber plug can be plugged into a cement head, and the process is simple.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of cement head tool of oilfield rubber plug loading, especially to a special tool for loading rubber plug in cement head of well cementing. BACKGROUND

[0002] Well cementing is the last key procedure of oil drilling, and the well cementing rubber plug is a commonly used tool in well cementing operation, which plays the role of isolation, scraping and pressure bumping in well cementing operation engineering. The well cementing rubber plug is installed in the cement head in advance before well cementing construction, and the rubber plug is released by opening the cement head block pin after cement injection, and the rubber plug goes down to complete the well cementing construction.

[0003] At present, there are mainly two methods for installing rubber plug in cement head. One is to install rubber plug in the workshop or on the ground of drilling site by using large installation tool, which has the defect that the installation tool is heavy and can only be used in the special installation workshop or on the ground of drilling site. If the construction site changes, it cannot be replaced in time, which is not convenient for on-site operation. The other is to use a hammer to pound the rubber plug into the cement head cavity, which has the defect that the rubber plug is damaged due to uneven force. In addition, this method cannot be used to install some rubber plugs with hard rubber bowls. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the defects in the prior art and provides a special tool for loading rubber plug in cement head of well cementing.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a special tool for loading rubber plug in cement head of well cementing, which comprises a cement head, the outer wall of the cement head is fixedly connected with a first by nut buckle at the lower end, the left side of the first by nut buckle is connected with a second by nut buckle, the outer wall of the second by nut buckle is fixedly connected with a lifting lock pin, the inside of the lifting lock pin is provided with a lifting rod, the bottom of the lifting rod is provided with a plurality of lifting adjustment holes, the top of the lifting rod is fixedly connected with a horizontal rod, the bottom of the horizontal rod is provided with a plurality of horizontal adjustment holes, the bottom outer wall of the horizontal rod is sleeved with a translation lock pin, the bottom of the translation lock pin is fixedly connected with a primary hydraulic cylinder, the lower end of the primary hydraulic cylinder is internally provided with a secondary hydraulic cylinder, the bottom of the secondary hydraulic cylinder is fixedly connected with a disc at one end extending into the cement head, the top end of the cement head is internally provided with a rubber plug, and the disc is located at the upper end of the rubber plug.

[0006] Further description of the above technical scheme:

[0007] The outer wall of the primary hydraulic cylinder is provided with a quick connector, the other end of the quick connector at the upper end is provided with an oil inlet pipe, and the other end of the quick connector at the lower end is provided with an oil return pipe.

[0008] As a further description of the above technical solutions:

[0009] The top of the crossbar is fixedly connected with an ear, and a lifting hole is formed in the ear.

[0010] As a further description of the above technical solutions:

[0011] The upper end of the cement head is provided with a third female buckle, and the right side of the first female buckle is provided with a blocking pin.

[0012] As a further description of the above technical solutions:

[0013] The left side of the cement head is provided with an electric control box, the outer wall of the electric control box is provided with a charging port, the right side of the electric control box is provided with a liquid control box, and the outer wall of the liquid control box is provided with an outlet and an inlet.

[0014] As a further description of the above technical solutions:

[0015] The outlet is connected with the other end of the oil inlet pipe, and the inlet is connected with the other end of the oil return pipe.

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

[0017] 1. Before installing the rubber plug, the positions of the first hydraulic cylinder and the second hydraulic cylinder need to be adjusted. The lifting rod is moved in the lifting lock pin by lifting and pulling the lifting rod, the height of the lifting rod is adjusted, and the corresponding bolt is used for locking. The first hydraulic cylinder and the second hydraulic cylinder can be moved and fixed in the horizontal direction, can match different cement heads, and then when the rubber plug is installed, the rubber plug is installed at the top of the cement head, then the first hydraulic cylinder pushes the second hydraulic cylinder downward, and then the second hydraulic cylinder drives the disc downward, so that the rubber plug is pressed into the cement head, the rubber plug is prevented from being damaged due to uneven force caused by hammering on the rubber plug at the construction site, and the rubber plug with hard rubber bowl can be inserted into the cement head. The process is simple, the operation is simple, and the efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A cement head internal mechanism schematic view of a special tool for installing rubber plugs in cement heads of oilfield cementing is provided for the utility model.

[0019] Figure 2 A cement head internal mechanism schematic view of a special tool for installing rubber plugs in cement heads of oilfield cementing is provided for the utility model. Figure 1 A structure enlargement schematic view of the utility model is provided.

[0020] Figure 3 A structure enlargement schematic view of the utility model is provided. Figure 1 A structure enlargement schematic view of the utility model is provided.

[0021] Figure 4 The utility model provides a special tool for oilfield cementing cement head is equipped with rubber plug Figure 1 The enlarged schematic view of the C structure.

[0022] Legend:

[0023] 1, cement head; 2, first by nut buckle; 3, second by nut buckle; 4, lifting lock pin; 5, lifting rod; 6, lifting adjustment hole; 7, crossbar; 8, transverse adjustment hole; 9, translation lock pin; 10, primary hydraulic cylinder; 11, secondary hydraulic cylinder; 12, disc; 13, rubber plug; 14, quick connector; 15, oil inlet pipe; 16, oil return pipe; 17, lifting lug; 18, third by nut buckle; 19, blocking pin; 20, electric control box; 21, charging port; 22, hydraulic control box; 23, outlet; 24, inlet. Specific implementation

[0024] Reference Figures 1-4 The utility model provides a special tool for oilfield cementing cement head is equipped with rubber plug: including cement head 1, the outer wall lower extreme of cement head 1 is connected with first by nut buckle 2, the left side of first by nut buckle 2 is connected with second by nut buckle 3, the outer wall of second by nut buckle 3 is connected with lifting lock pin 4, the inside of lifting lock pin 4 is provided with lifting rod 5, the bottom of lifting rod 5 is set up with lifting adjustment hole 6, and the number of lifting adjustment hole 6 has multiple, the top of lifting rod 5 is connected with crossbar 7, and the bottom of crossbar 7 is set up with transverse adjustment hole 8, and the number of transverse adjustment hole 8 has multiple, and the bottom outer wall of crossbar 7 is sleeved with translation lock pin 9, and the bottom of translation lock pin 9 is connected with primary hydraulic cylinder 10, and the lower end inside of primary hydraulic cylinder 10 is provided with secondary hydraulic cylinder 11, and the bottom of secondary hydraulic cylinder 11 is fixedly connected with disc 12 in the one end inside of cement head 1, and the top inside of cement head 1 is installed with rubber plug 13, and disc 12 is located in the upper end of rubber plug 13, and the outer wall of primary hydraulic cylinder 10 is installed with quick connector 14, and the other end of upper end quick connector 14 is provided with oil inlet pipe 15, and the other end of lower end quick connector 14 is provided with oil return pipe 16.

[0025] Before installing the rubber plug 13, the positions of the first hydraulic cylinder 10 and the second hydraulic cylinder 11 need to be adjusted, the lifting rod 5 is moved in the lifting lock pin 4 by lifting and pulling the lifting rod 5, the height of the lifting rod 5 is adjusted, and the corresponding plug pin is locked, the first hydraulic cylinder 10 and the second hydraulic cylinder 11 are the same, and the horizontal movement and fixation can be realized, different cement heads 1 can be matched, then when the rubber plug is installed, the rubber plug 13 is installed at the top of the cement head 1, then the first hydraulic cylinder 10 pushes the second hydraulic cylinder 11 out, then the second hydraulic cylinder 11 drives the disc 12 to move downward, so that the rubber plug 13 is pressed into the cement head 1, the rubber plug 1 is prevented from being damaged due to uneven force caused by hammering on the rubber plug 1 at the construction site, and the rubber plug 1 with a hard rubber bowl can be inserted into the cement head 1, the process is simple, the operation is simple, and the efficiency is high.

[0026] The top of the cross rod 7 is fixedly connected with a lifting lug 17, a lifting hole is formed in the lifting lug 17, a third female buckle 18 is arranged on the upper end outer wall of the cement head 1, a blocking pin 19 is arranged on the right side outer wall of the first female buckle 2, an electric control box 20 is arranged on the left side of the cement head 1, a charging port 21 is formed in the outer wall of the electric control box 20, a liquid control box 22 is arranged on the right side of the electric control box 20, an outlet 23 and an inlet 24 are arranged on the outer wall of the liquid control box 22, the outlet 23 is connected with the other end of the oil inlet pipe 15, and the inlet 24 is connected with the other end of the oil return pipe 16.

[0027] Working principle: before installing the rubber plug 13, the positions of the first hydraulic cylinder 10 and the second hydraulic cylinder 11 need to be adjusted, the lifting rod 5 is moved in the lifting lock pin 4 by lifting and pulling the lifting rod 5, the height of the lifting rod 5 is adjusted, and the corresponding plug pin is locked, the first hydraulic cylinder 10 and the second hydraulic cylinder 11 are the same, and the horizontal movement and fixation can be realized, different cement heads 1 can be matched, then when the rubber plug is installed, the rubber plug 13 is installed at the top of the cement head 1, then the first hydraulic cylinder 10 pushes the second hydraulic cylinder 11 out, then the second hydraulic cylinder 11 drives the disc 12 to move downward, so that the rubber plug 13 is pressed into the cement head 1, the rubber plug 1 is prevented from being damaged due to uneven force caused by hammering on the rubber plug 1 at the construction site, and the rubber plug 1 with a hard rubber bowl can be inserted into the cement head 1, the process is simple, the operation is simple, and the efficiency is high.

[0028] Finally, it should be pointed out that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement is carried out to part of technical features, any modification, equivalent replacement, improvement etc. within the spirit and principle of the utility model, should be included in the protection scope of the utility model.

Claims

1. A special tool for oil field cement head rubber plug, comprising a cement head (1), characterized in that: The outer wall lower end of the cement head (1) is fixedly connected with a first female buckle (2), the left side of the first female buckle (2) is connected with a second female buckle (3), the outer wall of the second female buckle (3) is fixedly connected with a lifting lock pin (4), the inside of the lifting lock pin (4) is provided with a lifting rod (5), the bottom of the lifting rod (5) is provided with a plurality of lifting adjustment holes (6), the top of the lifting rod (5) is fixedly connected with a crossbar (7), the bottom of the crossbar (7) is provided with a plurality of transverse adjustment holes (8), the bottom end of the crossbar (7) is provided with a translation lock pin (9), the bottom of the translation lock pin (9) is fixedly connected with a first hydraulic cylinder (10), the lower end of the first hydraulic cylinder (10) is provided with a second hydraulic cylinder (11), the bottom of the second hydraulic cylinder (11) is fixedly connected with a disc (12) at one end extending into the cement head (1), the top end of the cement head (1) is provided with a rubber plug (13), and the disc (12) is located at the upper end of the rubber plug (13).

2. A special tool for oilfield cementing head plug according to claim 1, characterized in that: The outer wall of the first hydraulic cylinder (10) is provided with a quick connector (14), the other end of the upper end of the quick connector (14) is provided with an oil inlet pipe (15), and the other end of the lower end of the quick connector (14) is provided with an oil return pipe (16).

3. The special tool for oilfield cementing head loading rubber plug of claim 1, characterized in that: The top of the crossbar (7) is fixedly connected with an ear (17), and the inside of the ear (17) is provided with a lifting hole.

4. The special tool for the head seal of oilfield cementing cement head according to claim 1, characterized in that: The upper end of the outer wall of the cement head (1) is provided with a third female buckle (18), and the right side of the outer wall of the first female buckle (2) is provided with a blocking pin (19).

5. The special tool for oilfield cementing head loading rubber plug of claim 1, wherein: The left side of the cement head (1) is provided with an electric control box (20), the outer wall of the electric control box (20) is provided with a charging port (21), the right side of the electric control box (20) is provided with a hydraulic control box (22), and the outer wall of the hydraulic control box (22) is provided with an outlet (23) and an inlet (24).

6. A special tool for oilfield cementing head plug of claim 5, characterized in that: The outlet (23) is connected with the other end of the oil inlet pipe (15), and the inlet (24) is connected with the other end of the oil return pipe (16).

Images