Anti-sticking structure for a probe in a hole

Abstract

The utility model discloses a hole -in -the -hole probe anti -clamping structure including the silicon rubber cover of elasticity, and the top of silicon rubber cover is adapted with the top of probe, and forms the skirt edge in the top of silicon rubber cover and extends upward, and the skirt edge surrounds and forms the buffer stone storage groove. The utility model discloses the top of probe is combined with the silicon rubber cover of elasticity, utilizes the skirt edge of silicon rubber cover top and surrounds and forms the buffer stone storage groove, can store the broken stone in the buffer stone storage groove when the broken stone falls, to avoid the broken stone to break the probe, influence probe life, can also effectively reduce the broken stone and enter to the problem of the probe jamming between drilling and probe. Compared with the prior art, the utility model discloses a hole -in -the -hole probe anti -clamping structure, simple structure, and the probe is combined conveniently, and the installation is convenient and quick, and the free end of buffer stone storage groove is bent and extends to form the flared edge of horn outward, can effectively stop the larger broken stone, and moreover uses the soft structure, can avoid the problem of the probe jamming caused by the drilling aperture change.

Description

Technical Field

[0001] This utility model relates to the field of well logging technology in geotechnical engineering, and more specifically, to a structure for preventing stuck probes in boreholes. Background Technology

[0002] Engineering borehole logging is a technique that involves lowering a probe into the borehole and using physical methods such as electrical, acoustic, and nuclear magnetic resonance to measure formation parameters such as resistivity, acoustic velocity, and natural gamma rays to obtain geological information such as lithology, porosity, and fluid-bearing characteristics. It is widely used in oil and gas exploration, mineral exploration, hydrogeology, and engineering geology. During logging, it is necessary to control the probe speed, maintain borehole stability, and prevent problems such as stuck probes and signal interference to ensure data accuracy and operational safety. During the raising and lowering process within the borehole, the probe may become stuck due to borehole wall collapse, narrowing, obstruction by foreign objects, or improper operation, preventing normal probe movement. This manifests as a sudden increase in winch tension, interruption of logging data, cable tension, and even equipment alarms. In severe cases, it may cause probe damage or cable breakage.

[0003] The main reason for drilling logging probe jamming is formation fracturing, with debris falling from the borehole wall and causing the probe to get stuck. On the other hand, the conical design at the top of the probe increases the possibility of jamming.

[0004] Therefore, it is necessary to propose a structure to prevent the probe from getting stuck in the hole. Utility Model Content

[0005] This utility model provides a hole probe anti-jamming structure, which allows the logging probe to collect larger stones into the stone storage tank when it encounters falling rocks, and smaller stones can be collected into the stone storage tank or slide off the side of the probe. Using this structure can effectively prevent hole blockage caused by falling rocks in broken formations and avoid probe jamming.

[0006] According to one aspect of the present invention, a hole probe anti-jamming structure is provided for mounting on the top of a probe. The hole probe anti-jamming structure includes an elastic silicone sleeve that is adapted to the top of the probe and extends upward at the top of the silicone sleeve to form a skirt. The skirt surrounds a buffer stone storage groove.

[0007] Based on the above scheme, the free end of the buffer stone storage tank is bent outward to form a trumpet-shaped flange.

[0008] Preferably, based on the above scheme, a lower skirt is provided on the outer edge surface of the silicone sleeve, the lower skirt is located at the lower part of the silicone sleeve, and the outer diameter of the lower skirt is smaller than the inner diameter of the drill hole.

[0009] Based on the above scheme, the lower skirt and the retaining flange form a longitudinal isolation cavity.

[0010] Preferably, based on the above scheme, the top of the silicone sleeve is provided with a slot for threading cables.

[0011] Based on the above scheme, a preferred embodiment is that a buffer pad is provided inside the buffer stone storage tank.

[0012] Preferably, based on the above scheme, the upper skirt and the lower skirt are made of rubber.

[0013] This utility model discloses an anti-jamming structure for a borehole probe. It uses an elastic silicone sleeve attached to the top of the probe, and the skirt of the top of the silicone sleeve forms a buffer stone storage tank. When a stone falls, it can be stored in the buffer stone storage tank to prevent the stone from breaking the probe and affecting its lifespan. It can also effectively reduce the problem of stone getting stuck between the borehole and the probe, causing the probe to jam.

[0014] Compared with the prior art, the hole probe anti-jamming structure of this utility model is simple in structure, easy to combine with the probe, and quick and easy to install. The free end of the buffer stone storage tank is bent outward to form a trumpet-shaped baffle, which can effectively block larger stones. Moreover, the use of a soft structure can avoid the problem of probe jamming caused by changes in the borehole diameter. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying 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. In the drawings: Figure 1 This is a first state diagram of the use of the anti-jamming structure for a probe in a hole according to this utility model; Figure 2 This is a second state diagram showing the use of the anti-jamming structure for a probe in a hole according to this utility model; Figure 3 This is a structural diagram of a hole probe anti-jamming structure according to the present invention.

[0016] Explanation of icon numbers: 1. Silicone sleeve; 2. Buffer stone storage tank; 3. Upper skirt; 4. Retaining edge; 5. Lower skirt; 6. Bayonet; 7. Probe; 8. Drill hole; 9. Buffer layer; 10. Crushed stone. Detailed Implementation

[0017] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0018] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of a descriptive feature, integral, step, operation, element, and / or component, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or sets.

[0019] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0020] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0021] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various components of this invention are relative rather than absolute. These descriptions are appropriate when these components are in the positions shown in the drawings. If the descriptions of the positions of these components change, these directional indications also change accordingly.

[0022] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0024] Please see Figure 1 and combined Figure 2 , Figure 3 As shown, the anti-jamming structure for the probe in the hole of this utility model includes a flexible silicone sleeve 1. The inner cavity shape of the silicone sleeve 1 is closely adapted to the top shape of the probe 7 to be protected, and can be firmly fitted onto the probe 7 to facilitate the connection and installation between the two.

[0025] In this invention, a ring-shaped upper skirt 3 extends upward from the top of the silicone sleeve 1. These upper skirts 3 converge to form an upward-opening annular groove, namely a buffer rock storage tank 2. This rock storage tank is used to catch small stones or debris falling from above during the lowering of the probe 7 into the well.

[0026] To more effectively prevent larger stones from falling directly in, the free end of the skirt 3 on the opening edge of the buffer stone storage tank 2 is folded outward to form a trumpet-shaped retaining flange 4. The retaining flange 4 has a certain angle of inclination, which can play a role in shielding and guiding.

[0027] At the lower part of the outer wall of the silicone sleeve 1, another outwardly protruding lower skirt 5 can also be provided. The outer diameter of the lower skirt 5 is designed to be smaller than the inner diameter of the standard drill hole 8. Its main function is to center and guide, and to form a secondary barrier between the probe 7 and the hole wall to prevent debris from falling to the bottom critical part. The lower skirt 5 and the retaining flange 4 form a longitudinal isolation cavity.

[0028] A slot 6 is provided at the center of the top surface of the silicone sleeve 1 or at an appropriate position. The data cable or power cable of the probe 7 can pass through this slot 6, avoiding damage to the cable due to the installation of the anti-snagging structure.

[0029] During installation, simply place the silicone sleeve 1 on top of the probe 7 and insert the cable into the slot 6. During operation, if gravel 10 falls from above, it will first be blocked or deflected by the flared flange 4 and stored in the buffer stone storage tank 2, thus protecting the probe 7 body below and greatly reducing the possibility of gravel 10 getting stuck between the probe and the borehole wall.

[0030] Furthermore, in order to reduce the force exerted by the crushed stone 10 on the probe, this invention also provides a buffer pad 9 in the buffer storage tank to further reduce the force exerted by the crushed stone 10 on the probe.

[0031] Compared with the prior art, the advantages of this utility model are: 1. Effective anti-smashing and anti-jamming: The buffer stone storage tank at the top of the elastic silicone sleeve can receive and store falling gravel 10, preventing it from directly damaging the probe or getting stuck in the gap between the probe and the hole wall, significantly reducing the risk of probe jamming.

[0032] 2. High adaptability: The whole body is made of elastic soft material, which can adapt to the changes of different pore diameters and avoid the problem of pore jamming caused by irregular pore walls or pore shrinkage.

[0033] 3. Simple structure and easy installation: The silicone sleeve can be directly fitted onto the top of the probe. It has a bayonet 6 for easy cable passage. Installation and disassembly are very convenient and do not require complicated tools.

[0034] 4. High reliability: The flared flange design can better guide and block the gravel 10, and the double skirt design (upper stone storage tank and lower auxiliary skirt) provides multiple protections.

[0035] Finally, the method described in this application is merely a preferred embodiment and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A hole probe anti-jamming structure for mounting on the top of a probe, characterized in that, The probe anti-jamming structure in the hole includes an elastic silicone sleeve that fits the top of the probe and extends upward from the top of the silicone sleeve to form an upper skirt, which surrounds a buffer stone storage groove.

2. The anti-jamming structure for a probe in a hole as described in claim 1, characterized in that, The free end of the buffer stone storage tank bends outward to form a trumpet-shaped flange.

3. The anti-jamming structure for a probe in a hole as described in claim 2, characterized in that, The outer edge of the silicone sleeve is provided with a lower skirt, which is located at the lower part of the silicone sleeve, and the outer diameter of the lower skirt is smaller than the inner diameter of the drilled hole.

4. The anti-jamming structure for a probe in a hole as described in claim 3, characterized in that, The lower skirt and the retaining edge form a longitudinal isolation cavity.

5. The anti-jamming structure for a probe in a hole as described in claim 1, characterized in that, The top of the silicone sleeve is provided with a slot for threading cables.

6. The anti-jamming structure for a probe in a hole as described in claim 1, characterized in that, A buffer pad is installed inside the buffer stone storage tank.

7. The anti-jamming structure for a probe in a hole as described in claim 3, characterized in that, The upper and lower skirt edges are made of rubber.

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