Guiding rubber cone for well logging

Abstract

The utility model relates to the technical field of petroleum well logging equipment, and discloses a well logging guide rubber cone which comprises an upper connector, a protective cap is inserted in the left side of the upper connector, a lower connector is fixedly connected to the right end of the upper connector, cone rubber is arranged on the right side of the lower connector, a groove is formed in the surface of the left side of the cone rubber, and the protective cap is arranged in the groove. A T-shaped threaded barrel is fixedly connected into the inner wall of the left side of the cone rubber, a connecting unit is arranged on the left side of the T-shaped threaded barrel, a fixed barrel is fixedly connected to the surface of the right side of the lower connector, a movable barrel is inserted into the fixed barrel, and a spring is fixedly connected to the surface of the inner wall of the left side of the fixed barrel. According to the rubber cone, the groove, the T-shaped threaded cylinder, the connecting unit, the fixed cylinder, the movable cylinder and the spring are matched, the interior of the cone rubber can be supported, the elasticity and the tensile strength of the cone rubber are improved, and meanwhile the cone rubber can be independently detached and replaced.

Description

TECHNICAL FIELD

[0001] The utility model relates to petroleum logging equipment technical field especially relates to a guiding rubber cone for logging. BACKGROUND

[0002] In the process of downhole geological survey, the instrument string needs to be put down to the designated position in the well for surveying, if the instrument string is directly put down, there is a risk of friction and collision between the well wall and the instrument, and in order to protect the instrument, a buffer logging instrument is used in front of the instrument string, the existing buffer logging instrument is mostly in the form of spring + guiding rubber cone to slow down the impact of the well wall on the instrument.

[0003] Through the search, the Chinese patent publication No. CN203905935U discloses a guiding rubber cone, the cone body and the variable buckle joint of the guiding rubber cone are detachable, when the rubber is damaged, the whole is not replaced, only the cone body part can be replaced, the spring is arranged in the cone rubber, the hardness of the cone rubber itself is improved, the rigidity of the rubber body is increased, and the probability of easy tearing is reduced, the structure is compact, the installation is firm, the safety is reliable, the disassembly is easy, the maintenance is simple, the on-site operability is strong, and the utility value is obvious.

[0004] And the guiding rubber cone in the actual use process, the spring is arranged in the cone rubber, because the outside cone rubber needs to be in direct contact with the well wall and other external environment, in the complex downhole environment, the rubber is affected by factors such as friction, scraping, impact and downhole chemical environment, compared with the spring, the rubber is more prone to damage, and when the rubber is replaced, the spring needs to be replaced together, at this time, the spring is in a usable state, direct replacement will cause waste, therefore, a guiding rubber cone for logging is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a guiding rubber cone for logging, which aims at improving the problem of resource waste caused by inconsistent wear and tear of the spring and the rubber when the spring is arranged in the cone rubber of the guiding rubber cone in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: the guiding rubber cone for logging, including the upper joint, the left side of the upper joint is inserted with the cap, the right end of the upper joint is fixedly connected with the lower joint, the right side of the lower joint is provided with the cone rubber, the left side surface of the cone rubber is provided with the groove, the left side inner wall of the cone rubber is fixedly connected with the T type thread cylinder, the left side of the T type thread cylinder is provided with the connecting unit, the connecting unit is used for limiting and fixing the T type thread cylinder, the right side surface of the lower joint is fixedly connected with the fixed cylinder, the fixed cylinder is inserted with the moving cylinder, the left side inner wall surface of the fixed cylinder is fixedly connected with the spring.

[0007] As a further description of the above technical solution:

[0008] The outer wall of the moving cylinder and the outer wall of the fixed cylinder are mutually fitted with the inner wall of the groove, and the right end of the spring is fixedly connected with the right inner wall surface of the moving cylinder.

[0009] As a further description of the above technical solution:

[0010] The connecting unit comprises an annular guide plate and a bolt, the annular guide plate is fixedly connected to the outer side of the right end of the lower joint, and the bolt is arranged on the left side of the annular guide plate.

[0011] As a further description of the above technical solution:

[0012] The right end of the bolt penetrates through the annular guide plate, and the left end of the T-shaped threaded cylinder penetrates through the conical rubber.

[0013] As a further description of the above technical solution:

[0014] The right end of the bolt is screw-connected with the inner thread of the T-shaped threaded cylinder.

[0015] As a further description of the above technical solution:

[0016] The left end of the moving cylinder is fixedly connected with a rubber ring, the outer wall surface of the moving cylinder is fixedly connected with a guide block, and the inner wall surface of the fixed cylinder is provided with a guide groove.

[0017] As a further description of the above technical solution:

[0018] The guide block is slidably connected with the inner part of the guide groove.

[0019] As a further description of the above technical solution:

[0020] The right side surface of the fixed cylinder is provided with a chamfered structure at the outer circle.

[0021] The utility model has the advantages of the following beneficial effects:

[0022] 1、The utility model discloses a groove, a T-shaped threaded cylinder, a connecting unit, a fixed cylinder, a moving cylinder and a spring are matched, the inside of the conical rubber can be supported, the elasticity and tensile strength of the conical rubber are improved, the conical rubber can be individually disassembled and replaced, when the conical rubber is damaged and needs to be replaced, the spring that can still be used is not disassembled and replaced, and resource waste is avoided.

[0023] 2、 The utility model discloses, through the rubber ring that sets up, can avoid the hard collision of mobile cylinder with fixed cylinder in the left -hand moving process, and further reduce the risk of mobile cylinder deformation, prolong the service life of device, and through the cooperation of guide block and guide groove that sets up, the movement of mobile cylinder is oriented and is positioned, reduces the situation that mobile cylinder appears and is stuck in the moving process and causes the deviation. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a whole schematic view of the guide rubber cone for well logging provided by the utility model;

[0025] Figure 2 It is the schematic view of the cone rubber of the guide rubber cone for well logging provided by the utility model;

[0026] Figure 3 It is the schematic view of the front part section of the guide rubber cone for well logging provided by the utility model;

[0027] Figure 4 It is the schematic view of the inside front part section of the fixed cylinder and mobile cylinder of the guide rubber cone for well logging provided by the utility model.

[0028] LEGEND:

[0029] 1, upper joint, 2, cap, 3, lower joint, 4, cone rubber, 5, groove, 6, T-shaped threaded cylinder, 61, annular along plate, 62, bolt, 7, fixed cylinder, 8, mobile cylinder, 9, spring, 10, rubber ring, 11, guide block, 12, guide groove. DETAILED DESCRIPTION

[0030] The technical scheme in the embodiments of the utility model will be apparently and completely described below in conjunction with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative efforts belong to the range of protection of the utility model.

[0031] REFERENCE Figures 1-2 The utility model provides an embodiment: the guide rubber cone for well logging, including upper joint 1, the left side of upper joint 1 is inserted with cap 2, and upper joint 1 is provided with core insertion slot inside, before the instrument string is not inserted into core insertion slot, utilizes cap 2 to block core insertion slot, avoids the sundries in the inside of core insertion slot, when using, removes cap 2 and connects the instrument string with core insertion slot, and the right end of upper joint 1 is fixedly connected with lower joint 3, and the right side of lower joint 3 is provided with cone rubber 4, when the guide rubber cone meets resistance, the elastic deformation of cone rubber 4 buffers and offsets the impact force, to reduce the damage to instrument, and the left side surface of cone rubber 4 is provided with groove 5.

[0032] With reference to Figures 2-4 The left inner wall of the conical rubber 4 is fixedly connected with a T-shaped threaded cylinder 6. The T-shaped threaded cylinder 6 is clamped and fixed in the interior of the conical rubber 4 and forms an integral whole with the conical rubber 4 and cannot easily separate from the interior of the conical rubber 4. The left side of the T-shaped threaded cylinder 6 is provided with a connecting unit. The connecting unit comprises an annular flange plate 61 and a bolt 62. The annular flange plate 61 is fixedly connected to the outer right end of the lower connector 3 and forms an integral whole with the lower connector 3 so as to increase the size of the mountable position on the lower connector 3. The bolt 62 is arranged on the left side of the annular flange plate 61. The right end of the bolt 62 penetrates through the annular flange plate 61. The left end of the T-shaped threaded cylinder 6 penetrates through the conical rubber 4. The T-shaped threaded cylinder 6 is inserted between the annular flange plate 61. The right end of the bolt 62 is threadedly connected with the interior of the T-shaped threaded cylinder 6. The conical rubber 4 can be detachably connected with the bolt 62 and the T-shaped threaded cylinder 6 through thread connection. The conical rubber 4 can be quickly and individually detached.

[0033] The right side surface of the lower connector 3 is fixedly connected with a fixed cylinder 7. The interior of the fixed cylinder 7 is inserted with a moving cylinder 8. The right side surface of the fixed cylinder 7 is provided with an outer circle of chamfered structure. The moving cylinder 8 can linearly move in the left-right direction relative to the fixed cylinder 7. The outer walls of the moving cylinder 8 and the fixed cylinder 7 are mutually attached to the inner wall of the groove 5. The right side surface of the moving cylinder 8 is mutually attached to the right side inner wall surface of the groove 5. The outer wall surfaces of the fixed cylinder 7 and the moving cylinder 8 are coated with lubricating grease. The lubricating grease can reduce the frictional resistance between the moving cylinder 8, the fixed cylinder 7 and the conical rubber 4. When the conical rubber 4 is elastically deformed due to collision, the conical rubber 4 can deform and move along the side wall of the moving cylinder 8 and the fixed cylinder 7. When the conical rubber 4 moves and deforms at the right side of the fixed cylinder 7, it can move along the inclined surface of the chamfer. The fixed cylinder 7 reduces the hindering of the deformation and movement of the conical rubber 4. The left side inner wall surface of the fixed cylinder 7 is fixedly connected with a spring 9. The right end of the spring 9 is fixedly connected with the right side inner wall surface of the moving cylinder 8.

[0034] The spring 9 can support the interiors of the fixed cylinder 7 and the moving cylinder 8. The spring 9 can improve the elasticity and tensile strength of the conical rubber 4. When the outer side of the conical rubber 4 is impacted, the conical rubber 4 will be elastically compressed. At this time, the conical rubber 4 will extrude the moving cylinder 8 to move to the left into the interior of the fixed cylinder 7 and extrude the spring 9 to compress the spring 9 to generate elastic potential energy to further buffer and offset the impact force and improve the protection effect on the instrument and reduce the occurrence of resistance. When the conical rubber 4 needs to be replaced due to damage, the bolt 62 can be directly screwed to release the fixation of the conical rubber 4. At this time, the conical rubber 4 can be individually replaced so that the spring 9 can continue to be used.

[0035] With reference toFigure 4 The left end of the moving cylinder 8 is fixedly connected with a rubber ring 10, which can buffer when the moving cylinder 8 moves left and collides with the inner wall of the fixed cylinder 7, avoiding hard collision between the moving cylinder 8 and the fixed cylinder 7, thereby prolonging the service life of the fixed cylinder 7 and the moving cylinder 8. The outer wall surface of the moving cylinder 8 is fixedly connected with a guide block 11, which can be driven to move synchronously when the moving cylinder 8 moves. The inner wall surface of the fixed cylinder 7 is provided with a guide groove 12, and the guide block 11 is slidably connected with the inside of the guide groove 12. The guide groove 12 can guide and limit the movement of the guide block 11, so that the guide block 11 can only move linearly in the left-right direction, thereby further guiding and limiting the movement of the moving cylinder 8 through the cooperation of the guide block 11 and the guide groove 12, avoiding deviation of the moving cylinder 8 during movement, which may cause jamming and affect the protection effect of the guide rubber cone.

[0036] Working principle: when the guide rubber cone collides with the bottom during the lowering process, the cone rubber 4 will be elastically deformed and compressed under the impact and extrusion force, and in the process of compression deformation, the cone rubber 4 will extrude the moving cylinder 8, so that the moving cylinder 8 moves to the inside of the fixed cylinder 7 under the guidance and limitation of the guide block 11 and the guide groove 12, extrudes the spring 9, and the spring 9 is compressed to generate elastic potential energy, further buffers and offsets the impact force, improves the protection effect on the instrument, and at the same time, the cooperation of the fixed cylinder 7, the moving cylinder 8 and the spring 9 can support the inside of the cone rubber 4, improve the elasticity and tensile strength of the cone rubber 4, and when the cone rubber 4 needs to be replaced due to wear, the worker can directly twist the bolt 62 to release the fixation of the cone rubber 4, so that the cone rubber 4 can be individually disassembled relative to the fixed cylinder 7, the moving cylinder 8 and the spring 9, so that the spring 9 can continue to be used, avoiding resource waste.

[0037] Finally, it should be noted that: the above only describes preferred embodiments of the present application and is not intended to limit the present application. Although the present application 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 embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A guiding gum cone for well logging, comprising an upper joint (1), characterized in that: The left side of the upper joint (1) is inserted with a cap (2), the right end of the upper joint (1) is fixedly connected with a lower joint (3), the right side of the lower joint (3) is provided with a conical rubber (4), the left side surface of the conical rubber (4) is provided with a groove (5), the left side inner wall of the conical rubber (4) is fixedly connected with a T-shaped threaded cylinder (6), the left side of the T-shaped threaded cylinder (6) is provided with a connecting unit, the connecting unit is used for limiting and fixing the T-shaped threaded cylinder (6), the right side surface of the lower joint (3) is fixedly connected with a fixed cylinder (7), the inside of the fixed cylinder (7) is inserted with a moving cylinder (8), the left side inner wall surface of the fixed cylinder (7) is fixedly connected with a spring (9).

2. The steering gum cone for use in well logging according to claim 1, characterized in that: The outer wall of the moving cylinder (8) and the fixed cylinder (7) is matched with the inner wall of the groove (5), the right end of the spring (9) is fixedly connected with the right side inner wall surface of the moving cylinder (8).

3. The steering gum cone for use in well logging according to claim 1, characterized in that: The connecting unit comprises an annular along plate (61) and a bolt (62), the annular along plate (61) is fixedly connected to the right end outside of the lower joint (3), and the bolt (62) is arranged on the left side of the annular along plate (61).

4. The steering gum cone for use in well logging according to claim 3, characterized in that: The right end of the bolt (62) penetrates through the annular along plate (61), and the left end of the T-shaped threaded cylinder (6) penetrates through the conical rubber (4).

5. The steering gum cone for use in well logging according to claim 4, characterized in that: The right end of the bolt (62) is screw-connected with the inside of the T-shaped threaded cylinder (6).

6. The steerable gumboot of claim 1, wherein: The left end of the moving cylinder (8) is fixedly connected with a rubber ring (10), the outer wall surface of the moving cylinder (8) is fixedly connected with a guide block (11), and the inner wall surface of the fixed cylinder (7) is provided with a guide groove (12).

7. The steering gum cone for use in well logging according to claim 6, characterized in that: The guide block (11) is slidably connected with the inside of the guide groove (12).

8. The steering gum cone for use in well logging according to claim 1, characterized in that: The right side surface of the fixed cylinder (7) is provided with an inverted corner structure.

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