CN211524782U

CN211524782U - Two-way sand control instrument of horizontal well

Info

Publication number: CN211524782U
Application number: CN201922417994.8U
Authority: CN
Inventors: 郭俊峰; 袁虎; 何宏林; 王佩; 崔晶; 郑茂桢; 刘莎莎; 张利平; 周建国; 邢金虎
Original assignee: ZHONGSHENG OIL AND GAS NEW TEC
Current assignee: ZHONGSHENG OIL AND GAS NEW TEC
Priority date: 2019-12-28
Filing date: 2019-12-28
Publication date: 2020-09-18
Anticipated expiration: 2029-12-28

Abstract

The utility model discloses a horizontal well bidirectional sand control tool, which comprises a sleeve, an oil pipe and a fixed rod, wherein the end part of the oil pipe is connected with a sieve pipe, the end part of the sieve pipe is connected with a guide shoe, a plurality of packers are arranged between the sleeve and the oil pipe at intervals, the sieve pipe comprises an outer shell and an inner shell, a plurality of filter holes are arranged on the surfaces of the outer shell and the inner shell at intervals, a second outer convex edge is arranged on the top of the outer shell, a plurality of mounting holes are arranged on the surface of the second outer convex edge at intervals, a first outer convex edge is arranged at the bottom of the inner shell, a plurality of fixing seats are arranged on the top surface of the first outer convex edge at intervals, the inner shell is arranged in the outer shell, the fixed rod passes through the mounting holes from top to bottom and then is in a thread fixing groove of the fixing seats in a threaded manner, the, and the sieve tube can be disassembled and assembled, the operation is simple, and the assembly is firm.

Description

Two-way sand control instrument of horizontal well

Technical Field

The utility model relates to a sand control instrument technical field specifically is a two-way sand control instrument of horizontal well.

Background

In oil and gas field production, sand production from the formation is a problem that is often faced. Especially in the mixed oil extraction well or the mixed injection well in the exploitation process of the loose oil-gas layer, sand production is inevitable. The harm of the formation sand production has three aspects: 1. causing wear of downhole and surface equipment to affect the life of the well; 2. sand is stuck to the pump, which influences the normal production; 3. blocking the oil and gas flow channels, resulting in "dead wells" that cannot be produced at all. These problems have been largely manifested in the development of oil and gas fields. The present screen pipe that traditional horizontal well sand control instrument used simple structure, harmful substance such as grit in the mud brings the sleeve pipe inside along with the washing-in of mud, and this kind of condition can cause instrument erosion, mechanical structure card in the horizontal well to die or the stifled commentaries on classics, and mud can't pass through smoothly, causes equipment to damage easily, in order to solve above-mentioned problem, consequently, designs and supplies a two-way sand control instrument of horizontal well.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two-way sand control instrument of horizontal well to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a horizontal well bidirectional sand prevention tool comprises a casing, an oil pipe and a fixing rod, wherein the oil pipe is arranged inside the casing, the oil pipe is provided with a plurality of centralizers and spray guns in sequence from top to bottom at intervals, the end part of the oil pipe is connected with a sieve tube, the end part of the sieve tube is connected with a guide shoe, a plurality of packers are arranged between the sleeve and the oil tube at intervals, the sieve tube comprises an outer shell and an inner shell, wherein a plurality of sieve holes are arranged on the surfaces of the outer shell and the inner shell at intervals, the top of the shell is provided with a second outer convex edge, the surface of the second outer convex edge is provided with a plurality of mounting holes at intervals, the bottom of the inner shell is provided with a first outer convex edge, the top surface of the first outer convex edge is provided with a plurality of fixed seats at intervals, the inner shell is installed inside the outer shell, the fixing rod penetrates through the installation hole from top to bottom, then the bottom end of the fixing rod is in threaded connection with the thread fixing groove of the fixing seat, and the top end of the fixing rod is in threaded connection with the fixing nut.

Furthermore, the filtering holes are of rectangular structures, the filtering holes in the surface of the outer shell are transversely arranged, and the filtering holes in the surface of the inner shell are longitudinally arranged.

Furthermore, a sliding sleeve is arranged inside the sleeve.

Further, the diameter size of the outer shell is larger than that of the inner shell, and the outer shell and the inner shell are of cylindrical structures integrally.

Furthermore, the mounting hole and the fixing seat are symmetrically arranged.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses carry out the improvement of structure to prior art's horizontal well sand control instrument's screen pipe, the screen pipe is bilayer structure, including inner shell and shell, the filtration pore direction that inner shell and shell surface set up is different, lets the screen pipe can more effectively filter the grit etc. in the mud, and the screen pipe can be dismantled, the equipment, easy operation, the assembly is firm.

Drawings

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

FIG. 2 is a schematic view of the sieve tube of the present invention;

fig. 3 is a schematic view of the split structure of the sieve tube of the present invention.

In the figure: 1. a sleeve; 2. an oil pipe; 3. a centralizer; 4. a spray gun; 5. a packer; 6. a screen pipe; 7. guiding a shoe; 8. filtering holes; 9. an outer flange; 10. a fixed seat; 11. fixing the rod; 12. an inner shell; 13. a housing; 14. fixing a nut; 15. mounting holes; 16. a first outer flange.

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.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1-3, the present invention provides a technical solution: a horizontal well bidirectional sand control tool comprises a casing 1, an oil pipe 2 and a fixing rod 11, wherein the oil pipe 2 is arranged inside the casing 1, the oil pipe 2 is sequentially provided with a plurality of centralizers 3 and spray guns 4 at intervals from top to bottom, the end part of the oil pipe 2 is connected with a sieve pipe 6, the end part of the sieve pipe 6 is connected with guide shoes 7, a plurality of packers 5 are arranged between the casing 1 and the oil pipe 2 at intervals, the sieve pipe 6 comprises an outer shell 13 and an inner shell 12, a plurality of filter holes 8 are respectively arranged on the surfaces of the outer shell 13 and the inner shell 12 at intervals, a second outer convex edge 16 is arranged on the top of the outer shell 13, a plurality of mounting holes 15 are arranged on the surface of the second outer convex edge 16 at intervals, a first outer convex edge 9 is arranged at the bottom of the inner shell 12, a plurality of fixing seats 10 are arranged on the top surface of the first outer convex edge 9 at intervals, the inner shell, and the top end of the fixing rod 11 is in threaded connection with a fixing nut 14.

Furthermore, the filtering holes 8 are rectangular structures, the filtering holes 8 on the surface of the outer shell 13 are transversely arranged, and the filtering holes 8 on the surface of the inner shell 12 are longitudinally arranged.

Further, a sliding sleeve is arranged inside the sleeve 1.

Further, the outer shell 13 has a diameter size larger than that of the inner shell 12, and the outer shell 13 and the inner shell 12 are integrally of a cylindrical structure.

Further, the mounting hole 15 and the fixing seat 10 are symmetrically arranged.

The working principle is as follows: the utility model discloses screen pipe 6 to prior art's horizontal well sand control instrument carries out the improvement of structure, screen pipe 6 is bilayer structure, including inner shell 12 and shell 13, the filtration pore 8 directions that inner shell 12 and shell 13 surface set up are different, let screen pipe 6 can two-way in the in-service use process, more effectively filter grit etc. in the mud, and screen pipe 6 can dismantle, the equipment, moreover, the steam generator is simple in operation, the assembly is firm, during the equipment operation, install inner shell 12 inside shell 13, the dead lever 11 from the top down of taking passes the mounting hole 15 on the 16 surfaces of second outer chimb earlier, then with dead lever 11 bottom threaded connection in the thread fixing groove of fixing base 10 on first outer chimb 9, and with dead lever 11 top threaded connection fixation nut 14, thereby fixed mounting screen pipe 6's inner shell 12 and shell 13.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The two-way sand control tool for the horizontal well comprises a casing (1), an oil pipe (2) and a fixing rod (11), and is characterized in that the oil pipe (2) is arranged inside the casing (1), the oil pipe (2) is sequentially provided with a plurality of centralizers (3) and spray guns (4) at intervals from top to bottom, the end part of the oil pipe (2) is connected with a sieve pipe (6), the end part of the sieve pipe (6) is connected with guide shoes (7), a plurality of packers (5) are arranged between the casing (1) and the oil pipe (2) at intervals, the sieve pipe (6) comprises an outer shell (13) and an inner shell (12), a plurality of filter holes (8) are arranged on the surfaces of the outer shell (13) and the inner shell (12) at intervals, a second outer convex edge (16) is arranged on the top of the outer shell (13), a plurality of mounting holes (15) are arranged on the surface of the second outer convex edge (, first outer chimb (9) top surface interval is equipped with a plurality of fixing bases (10), inner shell (12) are installed inside shell (13), dead lever (11) from the top down passes in the thread fixing groove of mounting hole (15) back bottom threaded connection in fixing base (10), just dead lever (11) top threaded connection fixation nut (14).

2. The horizontal well bidirectional sand control tool according to claim 1, characterized in that: the filtering holes (8) are of rectangular structures, the filtering holes (8) on the surface of the outer shell (13) are transversely arranged, and the filtering holes (8) on the surface of the inner shell (12) are longitudinally arranged.

3. The horizontal well bidirectional sand control tool according to claim 1, characterized in that: a sliding sleeve is arranged inside the sleeve (1).

4. The horizontal well bidirectional sand control tool according to claim 1, characterized in that: the diameter size of the outer shell (13) is larger than that of the inner shell (12), and the outer shell (13) and the inner shell (12) are of cylindrical structures integrally.

5. The horizontal well bidirectional sand control tool according to claim 1, characterized in that: the mounting holes (15) and the fixing seat (10) are symmetrically arranged.