Underground sand remover

Abstract

The utility model provides an underground desander and relates to the technical field of gas field gathering and transportation, a shell is installed, a reinforcing mechanism is installed on the front face of the shell, a channel is formed in the top end of the shell and penetrates through the bottom, and flow baffles are installed at equal intervals from top to bottom in the channel and close to the right side. A filter plate is installed at the top end of the flow baffle and located in the channel, grooves are formed in the left side and the right side in the shell in a staggered mode, storage boxes are arranged in the grooves, sand inlets communicating with the channel are formed in the inner sides of the grooves, and natural gas enters the channel through the gas inlet and then is discharged through the gas outlet. In the process, natural gas can be subjected to multiple filtration through a filter plate, gravels are guided into a storage box to be stored, the desanding effect is greatly improved, the gravels are prevented from damaging follow-up equipment, the storage box can be reinforced by rotating a fixed disc, the storage box is prevented from falling off in the use process, and the use stability is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas field gathering and transportation, in particular to a downhole desander. Background Art

[0002] Gas field gathering and transportation refers to the entire process of collecting, processing and transporting natural gas produced by various gas wells in a gas field. A desander is a device specifically used to remove solid impurities (such as sand and gravel) from natural gas in the gas field gathering and transportation system. Its main function is to separate the sand and gravel from the natural gas by physical methods to protect subsequent processing equipment from damage.

[0003] Common downhole desanders have a relatively simple structure and usually only perform a single desanding operation on the natural gas flowing through them, which can easily lead to poor desanding and damage subsequent processing equipment. This is not practical enough. Therefore, we propose a downhole desander. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the existing technology. The common downhole desander has a relatively simple structure and usually only undergoes one desanding operation on the natural gas flowing through it, which can easily lead to poor desanding and damage subsequent processing equipment, and is not practical enough.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A downhole desander comprises a housing, wherein a reinforcement mechanism is installed on the front side of the housing;

[0007] A channel is provided at the top of the shell through the bottom, and a baffle is installed equidistantly from top to bottom near the right side of the channel. A filter plate is installed at the top of the baffle and inside the channel, and grooves are staggered on the left and right sides of the shell. A storage box is provided inside the groove, and a sand inlet connected to the channel is provided on the inner side of the groove.

[0008] As a preferred solution of the present invention, the reinforcement mechanism includes a fixed plate, which is provided in plurality and is threadedly connected to the front of the shell at equal distances from each other. Fixed frames are symmetrically provided on the left and right sides of the fixed plate, and the top and bottom of the two fixed frames are symmetrically provided with limit covers, which are welded to the shell.

[0009] The technical effect of adopting the above further solution is: by rotating the fixing plate, the protrusions on both sides thereof can push the fixing frame, thereby pushing the fixing frame to the front of the storage box, preventing the storage box from falling off during use and improving the stability of use.

[0010] As a preferred solution of the present invention, an air outlet is provided at the top of the shell, an air inlet is provided at the bottom of the shell, and the passage, the air outlet and the air inlet are connected.

[0011] The technical effect of adopting the above further solution is that natural gas enters the interior of the channel through the air inlet and is discharged through the air outlet after undergoing multiple sand removal processes.

[0012] As a preferred solution of the present invention, the baffle is installed at an inclined angle, and its length is half of the filter plate.

[0013] The technical effect of adopting the above further solution is: the baffle can slow down the flow rate of natural gas inside the channel, and at the same time, the filtered sand and gravel can be diverted to flow through the sand inlet into the storage box, thereby improving the sand removal effect.

[0014] As a preferred solution of the present invention, the filter plate is installed at an inclined angle, and a filter screen is fixedly installed on the inclined surface close to the right side, and the thickness of the filter screen decreases from bottom to top.

[0015] The technical effect of adopting the above further scheme is: the larger sand and gravel particles can be preliminarily screened out through the filter at the bottom, and the fine sand and gravel can be screened out for the second time through the subsequent fine filter, thereby achieving the purpose of multiple sand removal, and the filter screens with decreasing coarseness from bottom to top can reduce the workload of each filter screen and increase its service life.

[0016] As a preferred solution of the present invention, a slide rail group is symmetrically welded near the left and right sides of the interior of the groove, and the storage box is slidably connected to the slide rail group.

[0017] The technical effect of adopting the above further solution is that the storage box can be quickly taken out or installed through the sliding connection between the storage box and the slide rail assembly, thereby improving the convenience of use.

[0018] As a preferred solution of the present invention, a handle is installed on the front of the storage box, and a sealing strip is bonded around the contact point between the outer periphery of the storage box and the groove.

[0019] As a preferred solution of the present invention, the sand inlet is opened at an angle, and one end thereof close to the channel presents a trumpet-shaped structure.

[0020] As a preferred solution of the present invention, the fixing plate is disc-shaped, and the left and right sides protrude outwards, and a plurality of protrusions that fit the outer side of the fixing frame are welded to the corresponding storage box.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] In the utility model, through the design of the shell and the reinforcement mechanism, natural gas enters the channel through the air inlet and then flows out through the air outlet. During the process, the natural gas can be filtered multiple times by the filter plate, and the sand and gravel are introduced into the storage box for storage, which greatly improves the sand removal effect and prevents it from causing damage to subsequent equipment. The storage box can be reinforced by rotating the fixed disk to prevent it from falling off during use, effectively improving the stability of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a downhole desander provided by the utility model;

[0024] Figure 2 This is an overall front structural anatomical diagram of a downhole desander provided by the utility model;

[0025] Figure 3 This is an overall side structural anatomical diagram of a downhole desander provided by the utility model;

[0026] Figure 4 This is an enlarged schematic diagram of structure A of a downhole desander provided by the utility model.

[0027] Legend: 1. Shell; 101. Channel; 102. Baffle; 103. Filter plate; 104. Groove; 1041. Slide rail assembly; 105. Storage box; 106. Sand inlet; 107. Air outlet; 108. Air inlet; 2. Reinforcement mechanism; 201. Fixing plate; 202. Fixing frame; 203. Limiting cover. DETAILED DESCRIPTION

[0028] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to relevant references, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0030] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are for the purpose of describing specific embodiments only and are not intended to limit this invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0032] Example 1

[0033] like Figure 1-4 As shown, the utility model provides a technical solution: a downhole sand remover, comprising a shell 1, a reinforcement mechanism 2 is installed on the front of the shell 1, a channel 101 is provided at the top of the shell 1 through the bottom, a baffle 102 is installed equidistantly from top to bottom near the right side of the channel 101, a filter plate 103 is installed at the top of the baffle 102 and located inside the channel 101, grooves 104 are staggered on the left and right sides of the inside of the shell 1, a storage box 105 is provided inside the groove 104, and a sand inlet 106 connected to the channel 101 is provided on the inner side of the groove 104.

[0034] Example 2

[0035] like Figure 1-4As shown, the reinforcement mechanism 2 includes a fixed disk 201, which is provided with multiple fixed disks 201 and is equidistantly threadedly connected to the front of the shell 1. Fixed frames 202 are symmetrically provided on the left and right sides of the fixed disk 201. The top and bottom of the two fixed frames 202 are symmetrically sleeved with limit covers 203. The limit covers 203 are welded to the shell 1. By rotating the fixed disk 201, the protrusions on both sides can push the fixed frames 202, thereby pushing the fixed frames 202 to the front of the storage box 105 to prevent the storage box 105 from falling off during use and improve the stability of use. The top of the shell 1 is provided with an air outlet 107, the bottom of the shell 1 is provided with an air inlet 108, and the channel 101, the air outlet 107 and the air inlet 108 are connected, the natural gas enters the interior of the channel 101 through the air inlet 108, and flows out through the air outlet 107 after multiple sand removal. The baffle 102 is installed at an inclined angle, and its length is half of the filter plate 103. The baffle 102 can slow down the flow rate of the natural gas in the interior of the channel 101, and at the same time, it can also guide the filtered gravel to flow through the sand inlet 106 into the storage box 105, thereby improving the sand removal effect. The filter plate 103 is installed at an inclined angle, and a filter screen is fixedly installed on the inclined surface near the right side, and the coarseness of the filter screen decreases from bottom to top. The particles can be removed through the filter screen at the bottom. The larger gravel is initially screened out, and the fine gravel can be screened out for the second time through the subsequent fine filter, so as to achieve the purpose of multiple sand removal, and the filter screens with decreasing coarseness from bottom to top can reduce the workload of each filter screen and improve the service life. The interior of the groove 104 is symmetrically welded with a slide rail group 1041 near the left and right sides, and the storage box 105 is slidably connected to the slide rail group 1041. The storage box 105 can be quickly taken out or installed through the sliding connection between the storage box 105 and the slide rail group 1041, so as to improve the convenience of use. A handle is installed on the front of the storage box 105, and a sealing strip is bonded around the contact between the outer periphery of the storage box 105 and the groove 104 The sealing strip can improve the sealing performance of the storage box 105. The sand inlet 106 is opened at an angle, and its end close to the channel 101 has a trumpet-shaped structure, which facilitates the entry of sand into the sand inlet 106. The fixed disk 201 is disc-shaped, and the left and right sides protrude outward. The outer side of the fixing frame 202 corresponds to the storage box 105 and is welded with several protrusions that fit therewith. Through the outward protruding structure on both sides of the fixed disk 201, the fixed disk 201 can be rotated so that the protrusions on both sides push the fixing frame 202 outward, so that the protrusions on the outside of the fixing frame 202 move to the front of the storage box 105 to limit it, thereby preventing the storage box from falling off during use.

[0036] The working process of the present invention is as follows: when a downhole desander is used for downhole natural gas desanding in the process of gas field gathering and transportation, first, under the suction of external equipment, natural gas flows into the interior of the channel 101 through the air inlet 108 and is discharged through the air outlet 107. During the process, the natural gas slows down the flow rate under the action of the baffle 102, and penetrates the filter plate 103 in turn, and uses the filter screen to screen out sand and gravel, achieving the purpose of multiple filtration, greatly improving the desanding effect, and preventing it from causing damage to subsequent equipment. After use, the fixed disk 201 is rotated 90° to disengage the protrusions on both sides of the fixed frame 202, and the fixed frame 202 is pushed inward to disengage the protrusions on the outside of the fixed frame 202 from contact with the storage box 105, and finally the storage box 105 is pulled out from the inside of the groove 104, the sand and gravel inside it are cleared, and then the storage box 105 is pushed back into the groove 104.

[0037] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A downhole desander, comprising a housing (1), characterized in that: A reinforcement mechanism (2) is installed on the front of the housing (1); A channel (101) is provided at the top of the shell (1) and through the bottom thereof; baffles (102) are installed equidistantly from top to bottom near the right side of the inside of the channel (101); filter plates (103) are installed correspondingly at the tops of a plurality of baffles (102) and located inside the channel (101); grooves (104) are staggeredly provided on the left and right sides of the inside of the shell (1); a storage box (105) is provided inside the groove (104); and a sand inlet (106) connected to the channel (101) is provided on the inner side of the groove (104).

2. A downhole desander according to claim 1, characterized in that: The reinforcement mechanism (2) comprises a fixing disk (201), wherein a plurality of fixing disks (201) are provided and are equidistantly threadedly connected to the front surface of the housing (1), and fixing frames (202) are symmetrically provided on the left and right sides of the fixing disk (201), and limiting covers (203) are symmetrically provided on the top and bottom of the two fixing frames (202), and the limiting covers (203) are welded to the housing (1).

3. A downhole desander according to claim 1, characterized in that: An air outlet (107) is provided at the top of the shell (1), an air inlet (108) is provided at the bottom of the shell (1), and the channel (101), the air outlet (107) and the air inlet (108) are connected.

4. A downhole desander according to claim 1, characterized in that: The baffle (102) is installed at an inclined angle, and its length is half that of the filter plate (103).

5. The downhole desander according to claim 1, characterized in that: The filter plate (103) is installed at an inclined angle, and a filter screen is fixedly installed on the inclined surface close to the right side, and the thickness of the filter screen decreases from bottom to top.

6. The downhole desander according to claim 1, characterized in that: Slide rail groups (1041) are symmetrically welded near the left and right sides of the interior of the groove (104), and the storage box (105) is slidably connected to the slide rail groups (1041).

7. The downhole desander according to claim 1, characterized in that: A handle is installed on the front of the storage box (105), and a sealing strip is bonded around the contact point between the outer periphery of the storage box (105) and the groove (104).

8. The downhole desander according to claim 1, characterized in that: The sand inlet (106) is opened at an angle, and one end thereof close to the channel (101) presents a trumpet-shaped structure.

9. The downhole desander according to claim 2, characterized in that: The fixing plate (201) is disc-shaped, with left and right sides protruding outwards, and the outer side of the fixing frame (202) is welded with a plurality of protrusions corresponding to the storage box (105) to fit therewith.

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