CN214741250U - Sand-proof screen pipe - Google Patents

Abstract

The utility model discloses a sand control screen pipe, including the device body, the sand filtration groove has been seted up on the surface of device body, and the inside groove has been seted up to the inside of device body, and the top and the bottom of device body are formed with roof and bottom plate respectively integratively, and the surface from the top down of device body has cup jointed first fixed plate and second fixed plate in proper order, and the inner wall surface of second fixed plate is fixed to cup joint has the inner circle, and the adaptation groove has been seted up on the surface of second fixed plate, and the fixed claw is installed to the week side of bottom plate is inlayed. Among the above-mentioned scheme, through having set up stationary dog and arc, utilize its mutual cooperation between them for the device can increase the area of contact of device body and ground bottom when using, and further assurance device body has effectively guaranteed the device's security at the stable effect in the pit, and then has guaranteed the oil efficiency of producing oil of oil well, has increased the device's economic benefits, has prolonged the working life of device body in the pit simultaneously.

Description

Sand-proof screen pipe

Technical Field

The utility model relates to a sand control screen pipe technical field, more specifically says, the utility model relates to a sand control screen pipe.

Background

The petroleum screen pipe has the main functions of sand control, the different geological environments (different lithologies) of oil wells lead to different steel grades and types of the adopted screen pipes, in the petroleum drilling and production operation, the screen pipe is an important device, the prior well completion or oil production sand control is usually adopted, more screen pipes are used for wire-wound screen pipes, and the manufacturing method of the screen pipe comprises the following steps: steel wires with certain sections are wound on the metal liner pipes which are evenly distributed on the surrounding sieve rods or are provided with holes and are firmly welded, certain gaps are reserved to be used as sieve holes, although this method of manufacture is used by a number of manufacturers in China, there are problems with running such screens down the well, particularly when forced through bends in highly deviated or horizontal wells, inevitably collides, extrudes and rubs with the well wall or the casing, the wire disorder phenomenon is easy to occur, the screen pipe is damaged or the gap is deformed, the well completion quality and the sand control effect are reduced or failed, aiming at the defect of the wire-wound screen pipe, the slotted screen pipe integrating the pipe and the gap is generated, as the slotted pipe has superior performance and low price, the slotted pipe is highly valued and widely adopted by various large oil fields as soon as the slotted pipe appears, therefore, the appearance of the slotted pipe provides material conditions for the development of horizontal wells and side drilling wells and the oil exploitation of high-sand oil reservoirs.

However, in practical use, there still exist some disadvantages, such as: when the existing slotted pipe is used, the existing slotted pipe is generally in direct contact with sand and stones on the ground, and because the pressure on the ground is too high, and the slotted pipe is fixed below the ground only by a packer and a safety joint, the slotted pipe is easy to deviate and misplace, so that the follow-up normal exploitation of petroleum is influenced, and the working efficiency and the safety of the slotted pipe are reduced.

SUMMERY OF THE UTILITY MODEL

In order to overcome prior art's above-mentioned defect, the embodiment of the utility model provides a sand control screen pipe to solve prior art's slot pipe when it uses, generally directly with ground bottom grit direct contact, because ground bottom pressure is too big, and slot pipe itself only relies on packer and safety joint to be fixed in the underground, consequently leads to the slot pipe to take place skew and dislocation very easily, and then influences the follow-up problem to the normal exploitation of oil.

In order to solve the technical problem, the utility model provides a following technical scheme: the utility model provides a sand control screen pipe, includes the device body, the sand filtering groove has been seted up on the surface of device body, the inside groove has been seted up to the inside of device body, the top and the bottom of device body are formed integrally respectively and have been had roof and bottom plate, the surface from the top down of device body has cup jointed first fixed plate and second fixed plate in proper order, the fixed inner wall surface cover of second fixed plate has connect the inner circle, the adaptation groove has been seted up on the surface of second fixed plate, the fixed claw is installed to week side inlay of bottom plate, the other end fixed connection installation hemisphere of fixed claw, week side surface cover of bottom plate has connected the arc, the recess has all been seted up to the left and right sides of arc.

The first fixing plate and the second fixing plate are identical in structure, and the first fixing plate and the second fixing plate are made of metal materials integrally.

The inner ring is made of wear-resistant materials, and the inner wall surface of the inner ring is attached and abutted to the outer surface of the device body.

The fixed claws are distributed on the peripheral side surface of the bottom plate in a polar axis manner through the circle center of the bottom plate.

The diameter of the mounting hemisphere is equal to the cross section of the fixed claw up to the present, and the outer surface of the mounting hemisphere is smooth.

Wherein, the thickness value scope of arc is one millimeter to three millimeters, and the bottom of arc extends to the inside of bottom plate.

The inner wall surfaces of the grooves are smooth, the shapes of the grooves are matched with the overall shapes of the fixing claws, and the upper ends and the lower ends of the grooves are set to be round corners.

Wherein, the thickness value range of bottom plate and roof is one millimeter to three millimeters, the surface of bottom plate and roof is all smooth.

The utility model discloses an above-mentioned technical scheme's beneficial effect as follows:

among the above-mentioned scheme, through having set up stationary dog and arc, utilize its mutual cooperation between them for the device can increase the area of contact of device body and ground bottom when using, and further assurance device body has effectively guaranteed the device's security at the stable effect in the pit, and then has guaranteed the oil efficiency of producing oil of oil well, has increased the device's economic benefits, has prolonged the working life of device body in the pit simultaneously.

Drawings

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

fig. 2 is a schematic sectional structure of the present invention;

fig. 3 is a schematic perspective view of the present invention;

fig. 4 is an enlarged schematic structural view of a portion a of fig. 3 according to the present invention;

fig. 5 is an assembly view of the inner ring and the second fixing plate of the present invention.

[ reference numerals ]

1. A device body; 2. a sand filtering tank; 3. an inner tank; 4. a top plate; 5. a first fixing plate; 6. a second fixing plate; 7. an inner ring; 8. an adaptation groove; 9. a fixed jaw; 10. installing a hemisphere; 11. an arc-shaped plate; 12. a groove; 13. a base plate.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

The embodiment of the utility model provides a sand control screen pipe as attached drawing 1 to 5, including device body 1, the sand filtration groove 2 has been seted up on the surface of device body 1, inside groove 3 has been seted up to the inside of device body 1, top and the bottom of device body 1 are formed with roof 4 and bottom plate 13 respectively integratively, first fixed plate 5 and second fixed plate 6 have been cup jointed in proper order to the surface from the top down of device body 1, the inner circle 7 has been cup jointed to the inner wall fixed surface of second fixed plate 6, adaptation groove 8 has been seted up on the surface of second fixed plate 6, fixed claw 9 has been installed to week side inlay of bottom plate 13, fixed claw 9's other end fixed connection installation hemisphere 10, the fixed cover in week side surface of bottom plate 13 has been cup jointed arc 11, recess 12 has all been seted up to the left and right sides of arc 11.

The first fixing plate 5 and the second fixing plate 6 have the same structure, the first fixing plate 5 and the second fixing plate 6 are made of metal materials integrally, the inner ring 7 is made of wear-resistant materials, the inner wall surface of the inner ring 7 is tightly attached to the outer surface of the device body 1, the number of the fixed claws 9 is a plurality, the fixed claws 9 are distributed on the peripheral side surface of the bottom plate 13 in a polar axis manner through the circle center of the bottom plate 13, the diameter of the installation hemisphere 10 is equal to the cross section of the fixed claw 9, the outer surface of the installation hemisphere 10 is smooth, the thickness of the arc-shaped plate 11 ranges from one millimeter to three millimeters, and the bottom end of the arc plate 11 extends to the inner part of the bottom plate 13, the inner wall surfaces of the grooves 12 are smooth, the shape of the groove 12 is matched with the overall shape of the fixed claw 9, and the upper end and the lower end of the groove 12 are both designed into round corners.

As shown in fig. 1, the thickness values of the bottom plate 13 and the top plate 4 range from one millimeter to three millimeters, and the surfaces of the bottom plate 13 and the top plate 4 are smooth.

Specifically, the thickness value range of the bottom plate 13 and the top plate 4 is one millimeter to three millimeters, so that the durability of the bottom plate 13 and the top plate 4 is high, the practical effect of the device is further improved, and the service life of the device is prolonged.

The working process of the utility model is as follows: at first operating personnel installs device body 1 packer and safety joint to in the pit, and guarantee that roof 4 and bottom plate 13 surface fixation claw 9 at both ends are the vertical state with the ground bottom about device body 1, further assurance arc 11 on its both fully contacts with the ground bottom under the well head, normal use device body 1 carries out the oil exploitation operation this moment, utilize fixation claw 9 and arc 11 to increase the area of contact of device body 1 with the ground bottom this moment, finally the device has accomplished the further fixed effect to device body 1 and to the installation work of device body 1, at first operating personnel normally closes the device, operating personnel inspects whether the fixity between each subassembly of the device is normal after that, then change and maintain the more serious part of ageing and wearing and tearing of the device inside.

Above-mentioned scheme utilizes its mutual cooperation between the two through having set up stationary dog 9 and arc 11 for the device can increase the area of contact of device body 1 with the ground bottom when using, and further assurance device body 1 has effectively guaranteed the device's security at the stable effect in the pit, and then has guaranteed the oil efficiency of producing oil of oil well.

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 (8)

1. The sand control screen pipe comprises a device body (1), wherein a sand filtering groove (2) is formed in the surface of the device body (1), and is characterized in that an inner groove (3) is formed in the device body (1), a top plate (4) and a bottom plate (13) are respectively and integrally formed at the top end and the bottom end of the device body (1), a first fixing plate (5) and a second fixing plate (6) are sequentially sleeved on the surface of the device body (1) from top to bottom, an inner ring (7) is fixedly sleeved on the surface of the inner wall of the second fixing plate (6), an adaptive groove (8) is formed in the surface of the second fixing plate (6), fixing claws (9) are embedded on the periphery of the bottom plate (13), hemispheres (10) are fixedly connected to the other ends of the fixing claws (9), and arc-shaped plates (11) are fixedly sleeved on the periphery of the bottom plate (13), the left side and the right side of the arc-shaped plate (11) are both provided with grooves (12).

2. The sand control screen according to claim 1, wherein the first and second fixing plates (5, 6) have the same structure, and the first and second fixing plates (5, 6) are made of a metal material as a whole.

3. The sand control screen according to claim 1, wherein the inner ring (7) is made of a wear-resistant material, and the inner wall surface of the inner ring (7) is attached and abutted to the outer surface of the device body (1).

4. The sand control screen according to claim 1, wherein the number of the fixed claws (9) is several, and several fixed claws (9) are distributed on the peripheral side surface of the bottom plate (13) in a polar axis manner through the center of the bottom plate (13).

5. Sand control screen according to claim 1, characterized in that the diameter of the mounting hemisphere (10) is equal to the cross-section of the fixed claws (9) up to now, and the outer surface of the mounting hemisphere (10) is smooth.

6. The sand control screen according to claim 1, characterized in that the thickness of the curved plates (11) has a value in the range of one to three millimeters, and the bottom ends of the curved plates (11) extend to the inside of the bottom plate (13).

7. The sand control screen according to claim 1, wherein the inner wall surfaces of the grooves (12) are smooth, the shape of the grooves (12) is adapted to the overall shape of the fixed claws (9), and the upper and lower ends of the grooves (12) are rounded.

8. The sand control screen according to claim 1, characterized in that the thickness values of the bottom plate (13) and the top plate (4) range from one to three millimeters, the surfaces of the bottom plate (13) and the top plate (4) being smooth.

Images