Logging probe outer shell for petroleum logging equipment

Abstract

The utility model relates to the technical field of petroleum logging equipment, and discloses a logging probe outer shell for petroleum logging equipment, which comprises an outer shell, and the outer shell is also provided with a mounting mechanism and a dismounting mechanism; the mounting mechanism comprises a mounting plate and a supporting column which are arranged on the top end face of the shell, the mounting plate is fixedly arranged on the top end face of the shell and is in matched insertion connection with a positioning rod arranged on the supporting column, and the supporting column is detachably arranged on the top end face of the shell and is matched with a tail positioning disc of the logging probe; the dismounting mechanism is arranged on the supporting column and comprises a stress block arranged on the outer wall of the positioning rod, and the stress block is matched with an extrusion block arranged above the positioning rod. The probe outer shell can protect the logging probe, and the situation that the logging probe is collided in the detection process, and consequently the follow-up detection task is affected is avoided. The problem that when a logging probe detects in a drilling well, a drill bit is prone to being damaged due to the surrounding environment is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to petroleum logging equipment technical field, concretely relates to a logging probe shell for petroleum logging equipment. BACKGROUND

[0002] Petroleum is the complex hydrocarbon mixture formed by the deposition of organic matter (such as plankton, algae and microorganisms) in ancient oceans or lakes under anaerobic conditions, through the action of high temperature and high pressure and microbial decomposition in a long geological period, containing gaseous (natural gas), liquid (crude oil) and solid (bitumen, natural tar) and other forms. The molecular structure difference of the core components of alkanes, cycloalkanes and aromatic hydrocarbons determines the physical properties (such as viscosity, density) and chemical activity of petroleum. As the "blood of industry", petroleum is not only the main energy (more than 30% of global primary energy consumption) for transportation, power generation and industrial heating, but also the cornerstone of the chemical industry - through cracking, reforming and other processes, basic raw materials such as ethylene and propylene can be extracted, supporting more than 90% of industrial product production such as plastics, synthetic fibers, rubber, fertilizers and pharmaceuticals. It is one of the main objects of geological exploration.

[0003] In petroleum exploration, logging probes need to be inserted into the ground thousands of meters along the well, and the formation structure and oil and gas characteristics are detected by emitting acoustic waves, electromagnetic waves or nuclear physical signals. However, complex geological conditions (such as hard rock layers, fault zones) can cause uneven well wall, high frequency vibration and local high pressure generated by logging probe and well wall friction, which can easily cause logging probe shell wear, sensor deviation and even circuit failure. In addition, high temperature and high pressure environment (well bottom temperature can reach more than 200 DEG C) can accelerate material thermal fatigue, and corrosive fluid (such as hydrogen sulfide containing formation water) can further aggravate equipment wear and tear, affecting the exploration task of logging probe.

[0004] Based on this, the utility model provides a logging probe shell for petroleum logging equipment to solve the problems existing in the prior art. UTILITY MODEL CONTENT

[0005] Therefore, the main purpose of the utility model is to provide a logging probe shell for petroleum logging equipment to solve the problem that the logging probe is easily damaged by the surrounding environment when detecting in the well.

[0006] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0007] The utility model provides a kind of logging probe outer shell for petroleum logging equipment, including shell, the shell is hollow cylindrical structure, installation mechanism and dismounting mechanism are further provided on the shell;The installation mechanism includes installation plate and support column being arranged on the top end face of shell, the installation plate is fixedly arranged on the top end face of shell, and is cooperatively inserted with the positioning rod being arranged on support column, the support column is detachably arranged on the top end face of shell, and is matched with the tail locating disc of logging probe;The dismounting mechanism is arranged on support column, including force block being arranged on the outer wall of positioning rod, the force block is matched with extrusion block being arranged above positioning rod.

[0008] In a preferred embodiment, annular array type buffer protrusions are arranged on the outer surface of the shell in the axial direction.

[0009] In a preferred embodiment, a limiting table is further formed on the inner side of the top end face of the shell, and the limiting table is matched with the tail locating disc of the logging probe.

[0010] In a preferred embodiment, the installation mechanism further includes a support plate fixedly arranged on the top end of the shell, an active slot and a clearance hole are formed on the top end face of the support plate, the active slot is connected with the installation plate, and the clearance hole is matched with the tail end measuring line of the logging probe.

[0011] In a preferred embodiment, a sliding hole is further formed on the support column, a first spring is arranged in the sliding hole, one end of the first spring away from the inner wall of the sliding hole is connected with the outer wall of one end of the positioning rod, and a force inclined surface is formed on the end of the positioning rod away from the first spring.

[0012] In a preferred embodiment, a positioning hole is formed on the outer wall of the installation plate, and the inner wall of the positioning hole is slidably connected with the outer wall of the positioning rod.

[0013] In a preferred embodiment, the dismounting mechanism further includes a sliding groove formed on the top end face of the support column, a second spring is connected to the inner wall bottom end of the sliding groove, a sliding rod is connected to one end of the second spring away from the inner wall of the sliding groove, a connecting rod is connected to the top end face of the sliding rod, and one end of the connecting rod away from the sliding rod is connected with one side of the outer wall of the extrusion block.

[0014] In a preferred embodiment, a fixing plate is arranged on the outer wall of the positioning rod, a force block is connected to the outer wall of the fixing plate, and the force block is slidably connected with the extrusion block.

[0015] In a preferred embodiment, the extrusion block and the force block are respectively arranged on the two sides of the support column in left-right symmetrical structure.

[0016] In a preferred embodiment, the extrusion block and the force block are provided with inclined surfaces on the outer walls thereof, and the inclined surfaces of the two are matched and fitted.

[0017] Compared with the prior art, the well logging probe shell for the petroleum well logging equipment has the following beneficial effects:

[0018] 1. By the installation of the installation mechanism, the support column is extruded on the tail positioning disc of the well logging probe, and the positioning rod and the installation plate form a self-locking structure during the downward movement of the support column, so that the support column is locked, the fixing of the well logging probe in the installation shell is realized, and therefore, the use of bolts is not required, which is quick and convenient, the well logging probe can be protected by the shell, and bumping of the well logging probe during detection is prevented, so that the subsequent detection task is affected.

[0019] 2. By the installation of the dismounting mechanism, the lower pressing connecting rod drives the sliding rod to move downward, and the second spring is extruded at the same time, at this time, the connecting rod drives the extrusion block to move downward, and the movement of the force block is generated along with the downward movement of the extrusion block, the force block subjected to extrusion drives the positioning rod to move close to each other, so that the outer wall of the positioning rod is separated from the inner wall of the positioning hole, and the clamping installation of the installation plate is released, so that quick dismounting can be realized, tools are not required, and the operation of the staff is facilitated. The problem that the drill bit is easily damaged due to the surrounding environment during the detection of the well logging probe in the well is solved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings required to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating labor.

[0021] Figure 1 It is a structural schematic view of the well logging probe shell for the petroleum well logging equipment of the present application;

[0022] Figure 2 It is a sectional view structural schematic view of the well logging probe shell for the petroleum well logging equipment of the present application;

[0023] Figure 3 It is a sectional view structural schematic view of the installation mechanism of the present application;

[0024] Figure 4 It is a structural schematic view of the support column of the present application;

[0025] Figure 5 It is a sectional view structural schematic view of the dismounting mechanism of the present application;

[0026] Figure 6 For the utility model Figure 2 The local enlarged view of A in the middle.

[0027]

Main component symbol explanation

[0028] 1, shell;11, limit platform;12, buffer protrusion;2, logging probe;3, mounting mechanism;31, support plate;32, movable slot;33, mounting plate;34, positioning hole;35, support column;36, first spring;37, positioning rod;38, stress inclined surface;4, dismounting mechanism;41, second spring;42, slide rod;43, connecting rod;44, extrusion block;45, fixed plate;46, stress block. DETAILED DESCRIPTION

[0029] The structure of the logging probe shell body for petroleum logging equipment will be further described in detail below in combination with the drawings and the embodiments of the utility model.

[0030] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0031] It should be noted that the terms used herein are only for describing the specific embodiments, and are not intended to limit the exemplary embodiments of the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a presence of the features, steps, operations, devices, components and / or their combinations.

[0032] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units listed, but can include other steps or units not listed or inherent to these processes, methods, products or devices.

[0033] For purposes of the description hereinafter, spatial relations terms are used, such as "above", "below", "upper", "lower", and the like, to describe the relative position of one device or feature to another as the devices are depicted in the figures. The spatial terms are used in accordance with their ordinary meanings. It is to be understood that the spatial terms are intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the figures. For example, if a device is inverted, then a part that is described as "above" other parts would now be oriented "below" the other parts. Thus, the examples "above" and "below" can encompass both the orientations as shown in the figures, and other orientations of the devices. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatial terms will be interpreted accordingly.

[0034] As shown in the accompanying drawings for Figures 1-6 The utility model provides a technical scheme:

[0035] A well logging probe outer shell for petroleum well logging equipment, including shell 1, the main part of shell 1 adopts hollow cylinder structure, forms the cylindrical mounting cavity matched with the outer contour of well logging probe 2 in shell 1 inside, is used for realizing the physical protection and positioning support of well logging probe 2, and installation mechanism 3 and dismounting mechanism 4 are further provided on shell 1. Specifically, the installation mechanism 3 includes installation plate 33 installed on the top end face of shell 1 and support column 35, the installation plate 33 is fixedly installed on the top end face of shell 1, and is matched with the plug-in of positioning rod 37 in the through hole of support column 35, the support column 35 is detachably installed on the top end face of shell 1, and is used in cooperation with the tail positioning disc of well logging probe 2, is used for the plug-in connection of installation plate 33 and positioning rod 37, realizes the installation of shell 1 on the outside of well logging probe 2, and protects well logging probe 2. The dismounting mechanism 4 is arranged on support column 35 and includes stress block 46 arranged on the outer wall of positioning rod 37, the stress block 46 and the extrusion block 44 arranged above positioning rod 37 are used in cooperation, namely in use, the positioning rod 37 is retracted by the extrusion force of extrusion block 44 lower movement, to complete the quick dismounting of shell 1 and well logging probe 2.

[0036] In the above description, when the installation shell 1 protects the logging probe 2, the support column 35 is pressed on the tail positioning disc of the logging probe 2, and the positioning rod 37 forms a self-locking structure with the installation plate 33 during the downward movement of the support column 35, thereby locking the support column 35, and fixing the logging probe 2 in the installation shell 1. When the shell 1 needs to be removed, the positioning rod 37 is retracted by controlling the downward movement of the pressing block 44 to press on the stressed block 46, thereby completing the quick disassembly of the shell 1 and the logging probe 2, facilitating the removal of the entire logging probe shell body and releasing the protection of the logging probe 2.

[0037] In a preferred embodiment, as shown in Figure 1 , Figure 2 , Figure 3 and Figure 5 , the main structure of the logging probe protective shell is made of flexible rubber material, and an annular array type buffer protrusion 12 is arranged on the outer surface of the shell 1 in the axial direction. A multi-stage energy absorption mechanism is formed by the deformation characteristics of the rubber material. When encountering a collision with the downhole rock wall or external extrusion, the vertical buffer protrusion 12 effectively disperses the impact load through progressive compression deformation, and cooperates with the high elastic modulus of the material to realize double buffer protection, thereby ensuring the structural integrity and working stability of the logging probe 2 in a complex logging environment.

[0038] Specifically, as shown in Figure 1 , Figure 2 , Figure 3 and Figure 5 , a limiting table 11 is further formed on the inner side of the top end face of the shell 1. The limiting table 11 is used in cooperation with the tail positioning disc of the logging probe 2 to fix and limit the tail of the logging probe 2 in cooperation with the support column 35.

[0039] In a preferred embodiment, as shown in Figure 2 and Figure 3 , the installation mechanism 3 further includes a support plate 31 fixedly arranged at the top end of the shell 1. An active groove 32 is formed on the top end face of the support plate 31. The inner wall surface of the active groove 32 is connected in close contact with the outer wall surface of the installation plate 33. The number of the installation plate 33 is two, and the left and right symmetric structures are distributed on the top end face of the shell 1. In this way, the close contact between the installation plate 33 and the inner wall of the active groove 32 can be ensured, so that when the support column 35 is rotated after installation, the installation plate 33 can press the stress inclined surface 38 of the positioning rod 37, so that the positioning rod 37 is retracted. The setting of the active groove 32 can reduce the weight of the support plate 31, and at the same time, it is convenient to observe the position of the positioning rod 37.

[0040] Specifically, as shown in Figure 1 , Figure 2 and Figure 3As shown, a relief hole structure is also pre-set on the side wall of the support plate 31. The relief hole can accurately adapt to the requirement of the tail end measuring line of the logging probe 2 to pass out, while ensuring sealing protection and maintaining signal transmission performance.

[0041] In a preferred embodiment, as shown in Figure 2 , Figure 3 and Figure 6 , a sliding hole is formed on the support column 35, and a first spring 36 is arranged in the sliding hole. One end of the first spring 36 away from the inner wall of the sliding hole is connected to the outer wall of one end of a positioning rod 37, and a stress inclined surface 38 is formed on the end of the positioning rod 37 away from the first spring 36. The first spring 36 is used to automatically reset the positioning rod 37, so that the positioning rod 37 can be elongated outward when the first spring 36 is in normal length, and is clamped into the positioning hole 34 to install and lock the support column 35. The stress inclined surface 38 is used to cooperate with the side surface of the mounting plate 33 during installation of the logging probe 2, so that the positioning rod 37 can be automatically stretched and locked under the extrusion of the side surface of the mounting plate 33, to complete the fixation of the support column 35, and then the support column 35 is used to fix the logging probe 2.

[0042] In a preferred embodiment, as shown in Figure 2 , Figure 3 and Figure 6 , a positioning hole 34 is formed on the outer wall of the mounting plate 33, and the inner wall of the positioning hole 34 is slidably connected to the outer wall of the positioning rod 37. In this way, the close fit between the inner wall of the positioning hole 34 and the outer wall of the positioning rod 37 is improved, thereby improving the clamping and mounting stability.

[0043] In a preferred embodiment, as shown in Figure 1 , Figure 2 and Figure 5 , the dismounting mechanism 4 further comprises a sliding groove formed on the top end surface of the support column 35. A second spring 41 is connected to the inner wall bottom end of the sliding groove. The second spring 41 is connected to a sliding rod 42 away from one end of the inner wall of the sliding groove. A connecting rod 43 is connected to the top end surface of the sliding rod 42. One end of the connecting rod 43 away from the sliding rod 42 is connected to one side of an extrusion block 44. Under normal circumstances, the second spring 41 is in an elongated state. Therefore, when the connecting rod 43 is pressed downward, the extrusion block 44 moves downward synchronously.

[0044] In a preferred embodiment, as shown in Figure 1 , Figure 2 and Figure 5As shown, the outer wall of the positioning rod 37 is provided with a fixing plate 45, the outer wall of the fixing plate 45 is connected with a stress block 46, and the upper inclined surface of the stress block 46 is in sliding contact with the lower inclined surface of the extrusion block 44. When the extrusion block 44 is pressed downward, the first spring 36 is compressed by the mutual extrusion of the lower inclined surface of the extrusion block 44 and the upper inclined surface of the stress block 46, and the positioning rod 37 moves backward to release the limiting of the support column 35, facilitating the removal of the well logging probe 2.

[0045] Specifically, as Figure 2 and Figure 5 The extrusion block 44 and the stress block 46 are respectively symmetrical in structure and are distributed on the left and right sides of the support column 35.

[0046] More specifically, as Figure 2 , Figure 3 and Figure 4 The outer wall of the extrusion block 44 and the stress block 46 is provided with an inclined surface, and the inclined surfaces of the two are matched and matched. In this way, the two can better bear stress and exert force, so that the disassembly can be more convenient.

[0047] In a preferred embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The well logging probe 2 is a cable electromagnetic wave logging instrument transmitting probe disclosed in the invention patent with authorization announcement No. CN109973083B, and the specific structure is known to those skilled in the art. In this document, it will not be described.

[0048] The implementation principle of the well logging probe shell of the oil well logging equipment is as follows:

[0049] When installing the shell 1 and the well logging probe 2, first, the well logging probe 2 is sleeved on the inside of the shell 1, and the tail end positioning disc of the well logging probe 2 is positioned on the limiting table 11. Then install the support column 35. After the support column 35 moves downward to the upper side of the tail end positioning disc of the well logging probe 2, the positioning rod 37 is automatically stretched and locked under the extrusion of the side of the mounting plate 33, to complete the fixation of the support column 35, and then the well logging probe 2 is fixed by the support column 35. The shell 1 can protect the well logging probe 2 from being bumped during detection, so as to affect the subsequent detection task.

[0050] When the shell 1 and the logging probe 2 need to be disassembled, the connecting rod 43 is pressed downward, so that the sliding rod 42 is driven to move downward through the connecting rod 43, and the second spring 41 is extruded during the downward movement of the sliding rod 42. At this time, the connecting rod 43 can also drive the two extrusion blocks 44 to move downward during the downward movement, and the extrusion blocks 44 can contact and extrude the stress block 46 during the downward movement. The extruded stress block 46 can move towards the support column 35, and the positioning rod 37 is moved to be received during the movement, so that the outer wall is separated from the inner wall of the positioning hole 34 on the mounting plate 33, thereby releasing the clamping and limiting of the support column 35. Then, the shell 1 and the logging probe 2 are pulled downward to be separated and disassembled, so that they can be quickly disassembled without using tools, and the staff can operate conveniently.

[0051] The above is only a preferred embodiment of the present application, and is not used to limit the protection scope of the present application.

Claims

1. A logging probe outer housing for a petroleum logging apparatus, comprising an outer housing (1) which is a hollow cylindrical structure, characterized in that, The shell (1) is further provided with a mounting mechanism (3) and a dismounting mechanism (4); the mounting mechanism (3) comprises a mounting plate (33) and a supporting column (35) provided on the top end surface of the shell (1), the mounting plate (33) is fixedly provided on the top end surface of the shell (1) and is insertedly connected with a positioning rod (37) provided on the supporting column (35), and the supporting column (35) is detachably provided on the top end surface of the shell (1) and is matched with the tail positioning disc of the logging probe (2); the dismounting mechanism (4) is provided on the supporting column (35) and comprises a stress block (46) provided on the outer wall of the positioning rod (37), and the stress block (46) is matched with an extrusion block (44) provided above the positioning rod (37).

2. A logging probe housing for a petroleum logging apparatus as defined in claim 1, characterized in that An annular array type buffer protrusion (12) is arranged on the outer surface of the shell (1) in the axial direction.

3. A logging probe housing for a petroleum logging apparatus as defined in claim 1, wherein A limiting table (11) is further formed on the inner side of the top end surface of the shell (1), and the limiting table (11) is matched with the tail positioning disc of the logging probe (2).

4. The logging probe housing for a petroleum logging apparatus as claimed in claim 1, wherein The mounting mechanism (3) further comprises a supporting plate (31) fixedly provided on the top end of the shell (1), an active slot (32) and a gap hole are formed on the top end surface of the supporting plate (31), the active slot (32) is connected with the mounting plate (33), and the gap hole is matched with the tail end measuring line of the logging probe (2).

5. The logging probe housing for a petroleum logging apparatus as claimed in claim 1, wherein A sliding hole is further formed on the supporting column (35), a first spring (36) is arranged in the sliding hole, one end of the first spring (36) away from the inner wall of the sliding hole is connected with the outer wall of one end of the positioning rod (37), and a stress inclined surface (38) is formed on the end of the positioning rod (37) away from the first spring (36).

6. A logging probe housing for a petroleum logging apparatus as defined in claim 1, wherein, A positioning hole (34) is formed on the outer wall of the mounting plate (33), and the inner wall of the positioning hole (34) is slidably connected with the outer wall of the positioning rod (37).

7. A logging probe housing for a petroleum logging apparatus as defined in claim 1, wherein The dismounting mechanism (4) further comprises a sliding groove formed on the top end surface of the supporting column (35), a second spring (41) is connected to the inner wall bottom end of the sliding groove, a sliding rod (42) is connected to one end of the second spring (41) away from the inner wall of the sliding groove, a connecting rod (43) is connected to the top end surface of the sliding rod (42), and one end of the connecting rod (43) away from the sliding rod (42) is connected with one side of the outer wall of the extrusion block (44).

8. A logging probe housing for a petroleum logging apparatus as defined in claim 7, wherein, A fixing plate (45) is arranged on the outer wall of the positioning rod (37), a stress block (46) is connected to the outer wall of the fixing plate (45), and the stress block (46) is slidably connected with the extrusion block (44).

9. A logging probe housing for a petroleum logging apparatus as defined in claim 8, wherein, The extrusion block (44) and the stress block (46) are respectively distributed in left-right symmetrical structures on both sides of the supporting column (35).

10. A logging probe housing for a petroleum logging apparatus as defined in claim 8, wherein, An inclined surface is formed on the outer wall of the extrusion block (44) and the stress block (46), and the inclined surfaces formed on the extrusion block (44) and the stress block (46) are matched.

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