CN210714660U

CN210714660U - Sealing mechanism for oil field logging acid-resistant environment corrosion

Info

Publication number: CN210714660U
Application number: CN201921755385.7U
Authority: CN
Inventors: 郑兴
Original assignee: Dalian Zhengshi Rubber Co ltd
Current assignee: Dalian Zhengshi Rubber Co ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-06-09
Anticipated expiration: 2029-10-18

Abstract

The utility model discloses a sealing mechanism for oil field logging acid-resistant environment corrodes, concretely relates to sealed technical field, including logging equipment, the observation window is installed to logging equipment lower surface adaptation, the inside fixed closing plate that is provided with of logging equipment, be provided with the inner chamber between closing plate and the observation window, the inside fixed air exhaust mouth that is provided with of closing plate, the observation window periphery is provided with first sealing member, first sealing member top is provided with the fastener. The utility model discloses an overall design utilizes the interference fit of protruding piece and draw-in groove, has replaced the sealed mode of original seal ring, outwards extracts the gas in the inner chamber for the inner chamber is in the state of vacuum negative pressure, thereby better seals between logging device and the observation window, has guaranteed good sealed effect, has improved its safety in utilization, thereby makes logging device more durable in acid environment.

Description

Sealing mechanism for oil field logging acid-resistant environment corrosion

Technical Field

The utility model relates to a sealed technical field, more specifically say, the utility model relates to a sealing mechanism that is used for oil field logging acid-fast environment to corrode.

Background

An oil field refers to a specific area of crude oil production. Sometimes referred to collectively as the reservoir of oil accumulated in the subsurface of a particular area. Broadly, several oil zones are referred to together as an oil field, which is a naturally occurring hydrocarbon in the subsurface that is liquid at surface conditions. In contrast, it is still a gas at surface conditions, and is natural gas. A particular area of natural gas production is a natural gas field. The size of the recoverable reserves of the oil determines the exploitation value. The oil-bearing area, the number and thickness of oil layers, the oil reserves per unit area and the like are required to be accurately calculated, and during the process of exploiting the oil field, an oil well needs to be excavated, and the inside of the oil well is measured by using logging equipment.

However, when the oil well is actually used, because a strong acid environment exists in the oil well, a sealing washer of an observation window of the logging equipment is easily contacted with external acid gas, and then corrosion leakage occurs, so that the sealing performance of the logging equipment is reduced, the inside of the logging equipment is damaged, and the safety of the logging equipment is reduced.

SUMMERY OF THE UTILITY MODEL

In order to overcome prior art's above-mentioned defect, the embodiment of the utility model provides a sealing mechanism for oil field logging acid-resistant environment corrodes, through the global design, utilize the interference fit of protruding piece and draw-in groove, original seal ring's sealed mode has been replaced, gas in the outside extraction inner chamber, make the inner chamber be in the state of vacuum negative pressure, thereby better seal between logging device and the observation window, good sealed effect has been guaranteed, the safety in utilization thereof is improved, thereby make logging device more durable in acid environment.

In order to achieve the above object, the utility model provides a following technical scheme: a sealing mechanism for oil field logging and acid environment corrosion resistance comprises logging equipment, wherein an observation window is installed on the lower surface of the logging equipment in a matched mode, a sealing plate is fixedly arranged inside the logging equipment, an inner cavity is formed between the sealing plate and the observation window, an air suction nozzle is fixedly arranged inside the sealing plate, a first sealing element is arranged on the periphery of the observation window, a fastening piece is arranged above the first sealing element, and a second sealing element is fixedly installed on the upper surface of the observation window;

the first sealing element comprises a first fixed block fixedly connected with the inner side wall of the logging device, a clamping groove is formed in the outer surface of the first fixed block, a second fixed block is arranged on the outer side of the first fixed block, a protruding block is integrally formed on the side surface of the second fixed block, the second fixed block is fixedly connected with the observation window, and the clamping groove in the first fixed block is connected with the protruding block in a clamping mode;

the second sealing element comprises a clamping block fixedly connected with the inner side wall of the logging equipment, a positioning rod is clamped on the clamping block and fixedly connected with the observation window.

In a preferred embodiment, the fastener includes the fixed plate, the fixed plate side surface is provided with first branch, first branch one end articulates there is the fly leaf, first branch side fixed surface is connected with oblique spring, fly leaf one side fixed surface bonds and has fastening pad, fly leaf opposite side fixed surface is connected with fastening spring, fly leaf one end articulates there is the second branch, second branch one end articulates there is the sliding block, the spout has been seted up on the fixed plate.

In a preferred embodiment, the fixed plate is connected with the first supporting rod through an inclined spring, and the fixed plate is connected with the movable plate through a fastening spring.

In a preferred embodiment, the sliding block is connected with a sliding groove on the fixing plate in a sliding manner.

In a preferred embodiment, the fixing plate is connected with the first supporting rod through a hinge.

In a preferred embodiment, the air suction nozzle on the sealing plate is provided with a sealing plug, and the sealing plate is a component made of tempered glass.

In a preferred embodiment, the logging tool exterior surface is coated with a corrosion resistant coating.

The utility model discloses a technological effect and advantage:

1. the utility model discloses in through overall design, utilize the interference fit of protruding piece and draw-in groove, replaced the sealed mode of original seal ring, outwards extract the gas in the inner chamber, make the inner chamber be in the state of vacuum negative pressure, thereby better seal between logging device and the observation window, guaranteed good sealed effect, improved its safety in utilization, thereby make logging device more durable in acid environment;

2. the utility model discloses in through having set up the fastener, to extruding the fly leaf all around, utilize the relation of connection between fly leaf, first branch and the second branch, because the elasticity restoring force after oblique spring and fastening spring are compressed, tightly support the fastening pad on the fly leaf in the observation window periphery to guarantee the relative steadiness between observation window and the logging equipment.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is an enlarged schematic structural view of a portion a in fig. 1 according to the present invention.

Fig. 3 is an enlarged schematic structural view of a portion B in fig. 1 according to the present invention.

Fig. 4 is a schematic structural view of the fastener of the present invention.

Fig. 5 is a schematic structural view of the middle fastening pad of the present invention.

The reference signs are: the device comprises a logging device 1, an observation window 2, a sealing plate 3, an inner cavity 4, an air suction nozzle 5, a first sealing element 6, a first fixing block 61, a clamping groove 62, a second fixing block 63, a protruding block 64, a fastening element 7, a fixing plate 71, a first supporting rod 72, a movable plate 73, a fastening pad 74, a second supporting rod 75, a sliding block 76, a sliding groove 77, an inclined spring 78, a fastening spring 79, a second sealing element 8, a clamping block 81 and a positioning rod 82.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The sealing mechanism for acid environment corrosion resistance in oil field logging as shown in fig. 1, fig. 2 and fig. 3 comprises a logging device 1 and an observation window 2, wherein the observation window 2 is fittingly installed on the lower surface of the logging device 1, a sealing plate 3 is fixedly arranged in the logging device 1, an inner cavity 4 is arranged between the sealing plate 3 and the observation window 2, an air suction nozzle 5 is fixedly arranged in the sealing plate 3, a first sealing element 6 is arranged on the periphery of the observation window 2, a fastening element 7 is arranged above the first sealing element 6, and a second sealing element 8 is fixedly installed on the upper surface of the observation window 2;

the first sealing element 6 comprises a first fixed block 61 fixedly connected with the inner side wall of the logging device 1, a clamping groove 62 is formed in the outer surface of the first fixed block 61, a second fixed block 63 is arranged on the outer side of the first fixed block 61, a protruding block 64 is integrally formed on the side surface of the second fixed block 63, the second fixed block 63 is fixedly connected with the observation window 2, and the clamping groove 62 in the first fixed block 61 is connected with the protruding block 64 in the second fixed block 63 in a clamping mode;

the second sealing element 8 comprises a fixture block 81 fixedly connected with the inner side wall of the logging device 1, a positioning rod 82 is clamped and mounted on the fixture block 81, and the positioning rod 82 is fixedly connected with the observation window 2.

The air exhaust nozzle 5 on the sealing plate 3 is provided with a sealing plug, the sealing plate 3 is a component made of toughened glass, and the air exhaust nozzle 5 is convenient to seal.

And the outer surface of the logging equipment 1 is coated with corrosion-resistant coating, so that the overall corrosion resistance of the logging equipment 1 is increased.

The implementation mode is specifically as follows: when the utility model is implemented, the observation window 2 is slowly pressed inwards towards the side surface of the logging device 1, the convex block 64 on the second fixing block 63 is clamped inside the clamping groove 62 on the first fixing block 61, the two blocks complete interference fit, meanwhile, the positioning rod 82 is also directly inserted into the clamping block 81, after the observation window 2 is completely embedded into the logging device 1, the air suction nozzle 5 on the sealing plate 3 is communicated with an external air pump, the air in the inner cavity 4 is outwards sucked by the air pump, so that the inner cavity 4 is in a vacuum negative pressure state, the observation window 2 can be better protected, the design replaces the original sealing mode of a sealing washer by utilizing the interference fit of the convex block 64 and the clamping groove 62, the air in the inner cavity 4 is outwards sucked, the inner cavity 4 is in a vacuum negative pressure state, and therefore the better sealing between the logging device 1 and the observation window 2 is realized, the good sealing effect is ensured, and the use safety of the well logging equipment is improved, so that the well logging equipment 1 is more durable in an acid environment.

As shown in fig. 1, fig. 4 and fig. 5, the sealing mechanism for acid environment corrosion resistance in oil field logging further comprises a fastener 7, wherein the fastener 7 comprises a fixing plate 71, a first supporting rod 72 is arranged on the side surface of the fixing plate 71, a movable plate 73 is hinged to one end of the first supporting rod 72, an oblique spring 78 is fixedly connected to the side surface of the first supporting rod 72, a fastening pad 74 is bonded to one side surface of the movable plate 73, a fastening spring 79 is fixedly connected to the other side of the movable plate 73, a second supporting rod 75 is hinged to one end of the movable plate 73, a sliding block 76 is hinged to one end of the second supporting rod 75, and a sliding groove 77 is formed in the fixing plate 71.

The fixed plate 71 is connected with the first supporting rod 72 through an inclined spring 78, and the fixed plate 71 is connected with the movable plate 73 through a fastening spring 79.

The slide block 76 is slidably connected to the slide groove 77 of the fixing plate 71, so that the slide block 76 can slide in the slide groove 77.

The fixed plate 71 is connected with the first supporting rod 72 in a hinged manner, so that the first supporting rod 72 can be turned over on the fixed plate 71.

The implementation mode is specifically as follows: in the implementation the utility model discloses the time, with observation window 2 facing logging device 1, inwards press observation window 2, the side surface of observation window 2 will contact with fastening pad 74, and to squeezing fly leaf 73 all around, because fly leaf 73, all be articulated together between first branch 72 and the second branch 75, fly leaf 73 is when being squeezed, will drive second branch 75 and overturn, the sliding block 76 of second branch 75 one end then slides in spout 77, meanwhile, oblique spring 78 and fastening spring 79 all are squeezed, because the elastic restoring force of both self, will be with the fastening pad 74 on fly leaf 73 tightly support at observation window 2 peripherally, guarantee the relative steadiness between observation window 2 and the logging device 1.

The utility model discloses the theory of operation:

referring to the attached

drawings

1, 2 and 3 of the specification, through the integral design, the original sealing mode of a sealing washer is replaced by interference fit of a convex block 64 and a clamping groove 62, gas in an inner cavity 4 is extracted outwards, and the inner cavity 4 is in a vacuum negative pressure state, so that the well logging device 1 and the observation window 2 are better sealed, a good sealing effect is ensured, the use safety of the well logging device is improved, and the well logging device 1 is more durable in an acid environment;

referring to the description of fig. 1, 4 and 5, the movable plate 73 is pressed to the periphery by the fastening member 7, and the fastening pad 74 on the movable plate 73 is tightly pressed against the periphery of the observation window 2 by the elastic restoring force of the inclined spring 78 and the fastening spring 79 after being compressed by the connection relationship between the movable plate 73, the first support rod 72 and the second support rod 75, so as to ensure the relative stability between the observation window 2 and the logging device 1.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a sealing mechanism for oil field logging acid-resistant environment corrodes, includes logging equipment (1), its characterized in that: an observation window (2) is installed on the lower surface of the logging device (1) in a matched mode, a sealing plate (3) is fixedly arranged inside the logging device (1), an inner cavity (4) is formed between the sealing plate (3) and the observation window (2), an air suction nozzle (5) is fixedly arranged inside the sealing plate (3), a first sealing element (6) is arranged on the periphery of the observation window (2), a fastening element (7) is arranged above the first sealing element (6), and a second sealing element (8) is fixedly installed on the upper surface of the observation window (2);

the first sealing element (6) comprises a first fixing block (61) fixedly connected with the inner side wall of the logging device (1), a clamping groove (62) is formed in the outer surface of the first fixing block (61), a second fixing block (63) is arranged on the outer side of the first fixing block (61), a protruding block (64) is integrally formed on the side surface of the second fixing block (63), the second fixing block (63) is fixedly connected with the observation window (2), and the clamping groove (62) in the first fixing block (61) is connected with the protruding block (64) in the second fixing block (63) in a clamping mode;

the second sealing element (8) comprises a clamping block (81) fixedly connected with the inner side wall of the logging equipment (1), a positioning rod (82) is clamped on the clamping block (81), and the positioning rod (82) is fixedly connected with the observation window (2).

2. The sealing mechanism for acid-environment corrosion resistance in oil field logging according to claim 1, wherein: fastener (7) are including fixed plate (71), fixed plate (71) side surface is provided with first branch (72), first branch (72) one end articulates there is fly leaf (73), first branch (72) side surface fixedly connected with oblique spring (78), fly leaf (73) side fixed surface bonds and has fastening pad (74), fly leaf (73) opposite side fixedly connected with fastening spring (79), fly leaf (73) one end articulates there is second branch (75), second branch (75) one end articulates there is sliding block (76), spout (77) have been seted up on fixed plate (71).

3. The sealing mechanism for acid-environment corrosion resistance in oil field logging according to claim 2, wherein: the fixed plate (71) is connected with the first supporting rod (72) through an inclined spring (78), and the fixed plate (71) is connected with the movable plate (73) through a fastening spring (79).

4. The sealing mechanism for acid-environment corrosion resistance in oil field logging according to claim 2, wherein: the sliding block (76) is connected with a sliding groove (77) on the fixed plate (71) in a sliding mode.

5. The sealing mechanism for acid-environment corrosion resistance in oil field logging according to claim 2, wherein: the fixing plate (71) is connected with the first supporting rod (72) in a hinged mode.

6. The sealing mechanism for acid-environment corrosion resistance in oil field logging according to claim 1, wherein: an air suction nozzle (5) on the sealing plate (3) is provided with a sealing plug, and the sealing plate (3) is a component made of toughened glass.

7. The sealing mechanism for acid-environment corrosion resistance in oil field logging according to claim 1, wherein: and the outer surface of the logging equipment (1) is coated with corrosion-resistant paint.