A packer for oil production

Abstract

The invention discloses a packer technical field, specifically a packer for oil production, comprising a pipeline, the inner wall of the pipeline is slidably connected to a packer assembly, the pipeline is detachably connected to a fixing assembly, the top of the fixing assembly is fixedly connected to a limiting assembly, and the packer assembly is detachably mounted on the limiting assembly; the limiting assembly comprises a guide rod, the outer wall of the guide rod is sleeved with a hollow sleeve and a first spring, and the bottom end of the guide rod is detachably connected to a bottom support ring; the beneficial effects of the invention are: by setting the first fastening bolt in the fixing assembly to be consistent with the height of the first plugging head, and the second fastening bolt to be consistent with the height of the second plugging head; thus, the pipeline will not be squeezed and deformed after the first fastening bolt and the second fastening bolt are tightened; by setting the limiting assembly, the packer assembly can be conveniently limited and fixed, thereby making disassembly and assembly convenient and greatly improving the use efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of packers, in particular to a packer used in petroleum development. Background Art

[0002] Refers to a downhole tool connected to the downhole tubing string, used to isolate the annular space between the oil pipe and the oil and gas well casing or the open hole wall; when it is necessary to isolate the annular space between the oil pipe and the oil and gas well casing or the open hole wall, connect the packer to the downhole tubing string, and after it is lowered to the designed depth, the packer on the packer is expanded by hydraulic drive and other means to isolate the oil casing annulus. Different types of packers have different starting and unsealing methods; after the hydraulic expansion packer is lowered to the designed depth, it is pressurized from the oil pipe, and the high-pressure liquid acts on the inner cavity of the rubber cylinder through the pressure transmission pores inside the packer. Under the action of the throttling pressure difference, the rubber cylinder expands to isolate the oil casing annulus. When the oil pressure is released and the oil casing pressure is balanced, the rubber cylinder shrinks back to its original state by its own resilience to achieve unsealing.

[0003] The existing packers do not have a limiting function during installation, which can easily cause the external pipeline to tilt, and cannot be connected well, and will also affect the sealing performance of the packer; and after the packer is put on the pipeline, it is fastened by bolts, and the contact between the bolts and the pipeline can easily cause the pipeline to deform and reduce the sealing performance. Summary of the invention

[0004] In view of the problems existing in the existing packers used in oil mining, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide a packer for oil production, which solves the problem that the existing packer has no limiting function during installation, which easily causes the external pipeline to tilt and cannot be well connected, and also affects the sealing performance of the packer; and after the packer is put on the pipeline and fastened by bolts, the abutment between the bolts and the pipeline easily causes the pipeline to deform and reduce the sealing performance.

[0006] To solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0007] A packer for oil mining, comprising a pipeline, the inner wall of the pipeline is slidably connected to a packer assembly, the pipeline is detachably connected to a fixing assembly, the top of the fixing assembly is fixedly connected to a limiting assembly, and the packer assembly is detachably mounted on the limiting assembly;

[0008] The sealing assembly comprises a first sealing head, the top end of which is detachably connected to an externally threaded rod;

[0009] The limiting assembly includes a guide rod, a hollow sleeve and a first spring are sleeved on the outer wall of the guide rod, the bottom end of the guide rod is detachably connected to the bottom support ring, the outer wall of the hollow sleeve is detachably connected to the top support ring, the top support ring is provided with a first through hole, the bottom support ring is provided with a second through hole, and the externally threaded rod passes through the first through hole and the second through hole.

[0010] As a preferred solution of the packer for oil mining described in the present invention, a first connecting seat is welded on the top of the first sealing head, the external threaded rod is inserted into the inner wall of the first connecting seat, and the first connecting seat and the external threaded rod are connected by bolts.

[0011] As a preferred solution of a sealer for oil mining described in the present invention, wherein: the outer walls at both ends of the top support ring are plugged with second connecting seats, the second connecting seat and the top support ring are connected by bolts, and the second connecting seat is welded to the outer wall of the hollow sleeve; the top of the bottom support ring is fixedly installed with a third connecting seat, the inner wall of the third connecting seat is plugged with the guide rod, the guide rod and the third connecting seat are connected by bolts, and the first spring is located between the hollow sleeve and the third connecting seat.

[0012] As a preferred solution of a sealer for oil production described in the present invention, the fixing assembly includes a first casing, a first sealing ring is inserted into the inner cavity of the first casing, a first internal threaded hole is opened on the first casing, a second internal threaded hole is opened on the first sealing ring, an internal threaded groove is opened on the outer wall of the pipe, the internal threaded groove, the second internal threaded hole and the inner wall of the first internal threaded hole are commonly threadedly connected to a first fastening bolt, and the top end of the first casing is fixedly connected to a bottom support ring.

[0013] As a preferred solution of the packer for oil mining described in the present invention, the limiting assembly further comprises a limiting nut, the inner wall of the limiting nut is threadedly connected to the external threaded rod, and the outer diameter of the limiting nut is larger than the aperture of the first through hole.

[0014] As a preferred solution of a sealer for oil mining described in the present invention, the limiting assembly also includes a fixed plate, one end of the fixed plate is fixedly connected to a pin rod, the end of the pin rod away from the fixed plate is fixedly connected to a clamping rod, a second spring is sleeved on the pin rod, and the clamping rod is clamped with the fixed plate; the bottom end of the fixed plate is detachably connected to a support column, and the bottom end of the support column is detachably connected to a bottom support ring.

[0015] As a preferred solution of a sealer for oil mining described in the present invention, wherein: a third through hole is opened on the top support ring, and the inner wall of the third through hole is slidably connected to the pin rod; a fourth through hole, a rectangular through hole and a rectangular groove are opened on the fixed plate, and the rectangular through hole and the rectangular groove are both connected to the fourth through hole, and both ends of the clamping rod are inserted into the rectangular groove; the bottom end of the fixed plate is fixedly connected to the fourth connecting seat, and the top end of the bottom support ring is fixedly connected to the fifth connecting seat, and the outer walls at both ends of the support column are respectively inserted into the fourth connecting seat and the fifth connecting seat, and the fourth connecting seat and the fifth connecting seat are both connected to the support column by bolts.

[0016] As a preferred solution of the packer for oil mining described in the present invention, the packer assembly further includes a second plugging head, the top of the second plugging head is connected to the first telescopic rod by bolts, and the top of the first telescopic rod is connected to the first plugging head by bolts.

[0017] As a preferred solution of a sealer for oil production described in the present invention, the fixing assembly also includes a second casing, a second sealing ring is inserted into the inner cavity of the second casing, a third internal threaded hole is opened on the second casing, a fourth internal threaded hole is opened on the second sealing ring, the second casing and the second sealing ring are connected to the pipeline together through a second bolt, the second casing is connected to the first telescopic rod through bolts, and one end of the first telescopic rod is connected to the first casing through bolts.

[0018] As a preferred solution of a sealer for oil extraction described in the present invention, wherein: the sealing assembly also includes a second sealing head, the top of the second sealing head is connected to the first telescopic rod by bolts, and the top of the first telescopic rod is connected to the first sealing head by bolts; the fixing assembly also includes a second casing, a second sealing ring is inserted into the inner cavity of the second casing, a third internal threaded hole is opened on the second casing, a fourth internal threaded hole is opened on the second sealing ring, the second casing and the second sealing ring are connected to the pipeline together by a second bolt, the second casing is connected to the first telescopic rod by bolts, and one end of the first telescopic rod is connected to the first casing by bolts.

[0019] Compared with existing technologies:

[0020] 1. By setting a fixed component, the top of the pipeline can be effectively sealed by using the first sleeve and the first sealing ring (as well as the second sleeve and the second sealing ring) in the fixed component, so that even if the first plugging head (the second plugging head) leaks oil from the inner wall of the pipeline, the oil will not overflow, the sealing is good and waste is avoided;

[0021] 2. The first fastening bolt in the fixing assembly is arranged to have the same height as the first plugging head, and the second fastening bolt is arranged to have the same height as the second plugging head; thus, the pipeline will not be squeezed and deformed after the first fastening bolt and the second fastening bolt are tightened;

[0022] 3. By setting the limit assembly, the sealing assembly can be conveniently limited and fixed, making it easy to disassemble and assemble, greatly improving the use efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure provided by Embodiment 1 of the present invention;

[0024] Figure 2 A schematic diagram of the structure provided by Embodiment 2 of the present invention;

[0025] Figure 3 Provided for Example 2 of the present invention Figure 2 Enlarged view of point A in the middle;

[0026] Figure 4 A bottom view of the limit plate provided in Example 1 of the present invention;

[0027] Figure 5 A top view of the limiting plate provided in Example 1 of the present invention;

[0028] Figure 6 A schematic diagram of the structure provided by Embodiment 3 of the present invention;

[0029] Figure 7 A schematic diagram of the structure provided for Embodiment 4 of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of Example 1 of the present invention.

[0031] In the figure: pipe 1, internal thread groove 11, limit assembly 2, limit nut 20, top support ring 21, second connecting seat 211, first through hole 212, third through hole 213, guide rod 22, third connecting seat 221, hollow sleeve 23, first spring 24, fixing plate 25, pin rod 251, clamping rod 252, fixing plate 26, fourth through hole 261, rectangular groove 262, rectangular through hole 263, bottom support ring 27, second through hole 271, support column 28, fourth connecting seat 281, fifth connecting seat 282, second spring 29, fixing assembly 3, first sleeve 31, first internal threaded hole 311, first sealing ring 32, second internal threaded hole 321, first fastening bolt 33, second sleeve 34, third internal threaded hole 341, second sealing ring 35, fourth internal threaded hole 351, second bolt 36, sealing assembly 4, first plugging head 41, first connecting seat 42, external threaded rod 43, external thread 431, first telescopic rod 44, second plugging head 45. DETAILED DESCRIPTION

[0032] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] Embodiment 1:

[0034] The present invention provides a packer for oil production, see Figure 1 , Figure 4-5 and Figure 8 , comprising a pipeline 1, the inner wall of the pipeline 1 is slidably connected to a sealing component 4, the pipeline 1 is detachably connected to a fixing component 3, the top of the fixing component 3 is fixedly connected to a limiting component 2, and the sealing component 4 is detachably mounted on the limiting component 2;

[0035] The sealing assembly 4 comprises a first plugging head 41, the top of which is detachably connected to an externally threaded rod 43, a first connecting seat 42 is welded to the top of the first plugging head 41, the inner wall of the first connecting seat 42 is plugged with the externally threaded rod 43, and the first connecting seat 42 and the externally threaded rod 43 are connected by bolts;

[0036] The limiting assembly 2 includes a guide rod 22, a hollow sleeve 23 and a first spring 24 are sleeved on the outer wall of the guide rod 22, the bottom end of the guide rod 22 is detachably connected to the bottom support ring 27, the outer wall of the hollow sleeve 23 is detachably connected to the top support ring 21, a first through hole 212 is provided on the top support ring 21, a second through hole 271 is provided on the bottom support ring 27, the external threaded rod 43 passes through the first through hole 212 and the second through hole 271, the outer walls of both ends of the top support ring 21 are plugged with second connecting seats 211, the second connecting seat 211 and the top support ring 21 are connected by bolts, and the second connecting seat 211 is welded to the outer wall of the hollow sleeve 23; a third connecting seat 221 is fixedly installed on the top of the bottom support ring 27, the inner wall of the third connecting seat 221 is plugged with the guide rod 22, the guide rod 22 and the third connecting seat 221 are connected by bolts, and the first spring 24 is located between the hollow sleeve 23 and the third connecting seat 221.

[0037] The fixing assembly 3 includes a first sleeve 31, a first sealing ring 32 is inserted into the inner cavity of the first sleeve 31, a first internal threaded hole 311 is opened on the first sleeve 31, a second internal threaded hole 321 is opened on the first sealing ring 32, an internal threaded groove 11 is opened on the outer wall of the pipeline 1, the internal threaded groove 11, the second internal threaded hole 321 and the inner wall of the first internal threaded hole 311 are threadedly connected to the first fastening bolt 33, the top end of the first sleeve 31 is fixedly connected to the bottom support ring 27, the limiting assembly 2 also includes a limiting nut 20, the inner wall of the limiting nut 20 is threadedly connected to the external threaded rod 43, and the outer diameter of the limiting nut 20 is larger than the aperture of the first through hole 212.

[0038] When in use, the first plugging head 41 is inserted into the pipeline 1, and the first sleeve 31 is covered on the top of the pipeline 1, the first internal threaded hole 311, the second internal threaded hole 321 and the internal threaded groove 11 are aligned, and the first sleeve 31 and the first sealing ring 32 are fixed to the pipeline 1 with the first fastening bolt 33. At this time, the length direction of the first fastening bolt 33 passes through the first plugging head 41, that is, the first fastening bolt 33 will not cause the pipeline 1 to be squeezed and deformed. Under the action of the first sealing ring 32, the sealing between the pipeline 1 and the first sleeve 31 is achieved; the top support ring 21 is sleeved on the external threaded rod 43, and the guide rod 22 is inserted into the third connecting seat 221, and the guide rod 22 is connected to the third connecting seat 221 by bolts; the limit nut 20 is threaded on the external threaded rod 43, and the limit nut 20 is turned down until the limit nut 20 presses the top support ring 21 and the first spring 24 is in a compressed state.

[0039] Embodiment 2:

[0040] See attached Figure 2-3 , which is different from the embodiment 1, is that: the limit assembly 2 also includes a fixed plate 25, one end of the fixed plate 25 is fixedly connected to the pin rod 251, the end of the pin rod 251 away from the fixed plate 25 is fixedly connected to the clamping rod 252, the pin rod 251 is sleeved with a second spring 29, and the clamping rod 252 is clamped with the fixed plate 26; the bottom end of the fixed plate 26 is detachably connected to the support column 28, the bottom end of the support column 28 is detachably connected to the bottom support ring 27, the top support ring 21 is provided with a third through hole 213, the inner wall of the third through hole 213 is slidably connected to the pin rod 251; the fixed plate 26 is provided with a fourth through hole 261, a rectangular through hole 263 and a rectangular groove 262, and the rectangular through hole 263 is provided with a fourth through hole 261 ... The hole 263 and the rectangular groove 262 are both connected to the fourth through hole 261, and the two ends of the clamping rod 252 are inserted into the rectangular groove 262; the bottom end of the fixing plate 26 is fixedly connected to the fourth connecting seat 281, and the top of the bottom support ring 27 is fixedly connected to the fifth connecting seat 282. The outer walls at both ends of the support column 28 are respectively connected to the fourth connecting seat 281 and the fifth connecting seat 282. The fourth connecting seat 281 and the fifth connecting seat 282 are both connected to the support column 28 by bolts. The sealing assembly 4 also includes a second sealing head 45, and the top of the second sealing head 45 is connected to the first telescopic rod 44 by bolts, and the top of the first telescopic rod 44 is connected to the first sealing head 41 by bolts.

[0041] When in use, the first plugging head 41 is inserted into the pipe 1, and the first sleeve 31 is covered on the top of the pipe 1, so that the first internal thread hole 311, the second internal thread hole 321 and the internal thread groove 11 are aligned, and the first sleeve 31 and the first sealing ring 32 are fixed to the pipe 1 with the first fastening bolt 33. At this time, the length direction of the first fastening bolt 33 passes through the first plugging head 41, that is, the first fastening bolt 33 will not cause the pipe 1 to be squeezed and deformed. Under the action of the first sealing ring 32, the pipe 1 and the first sleeve 31 are sealed; the top support ring 21 is sleeved on the external threaded rod 43, and insert the guide rod 22 into the third connecting seat 221, and connect the guide rod 22 to the third connecting seat 221 by bolts; first pass the end of the pin rod 251 with the clamping rod 252 through the third through hole 213 (make the clamping rod 252 shuttle along the rectangular through hole 263), after passing through, the second spring 29 is in a compressed state, rotate the pin rod 251 ninety degrees until the clamping rod 252 is aligned with the rectangular groove 262, and after releasing the pin rod 251, the clamping rod 252 enters the rectangular groove 262 under the elastic force of the second spring 29 until the limit nut 20 presses the top support ring 21, and the first spring 24 is in a compressed state.

[0042] Embodiment 3:

[0043] See attached Figure 6 , which is different from Example 1, is that the fixing assembly 3 also includes a second sleeve 34, a second sealing ring 35 is inserted into the inner cavity of the second sleeve 34, a third internal threaded hole 341 is opened on the second sleeve 34, and a fourth internal threaded hole 351 is opened on the second sealing ring 35. The second sleeve 34 and the second sealing ring 35 are connected to the pipeline 1 through a second bolt 36, and one end of the first telescopic rod 37 is connected to the first sleeve 31 through a bolt.

[0044] When in use, the second plugging head 45 and the first plugging head 41 are inserted into the pipeline 1, and the first sleeve 31 is covered on the top of the pipeline 1, so that the first internal threaded hole 311, the second internal threaded hole 321 and the internal threaded groove 11 are aligned, and the first sleeve 31 and the first sealing ring 32 are fixed to the pipeline 1 by the first fastening bolt 33, and the third internal threaded hole 341 and the fourth internal threaded hole 351 are aligned with the internal threaded groove 11 below the pipeline 1 by the extension and contraction of the first telescopic rod 37, and the second plugging head 45 is driven to be consistent in height with the second bolt 36 by the first telescopic rod 44, and the second sleeve 34 and the second sealing ring 35 are connected to the pipeline 1 by the second bolt 36. At this time, the length direction of the first fastening bolt 33 passes through the first sealing head 41, that is to say, the first fastening bolt 33 and the second bolt 36 will not cause the pipeline 1 to be squeezed and deformed, and under the action of the first sealing ring 32 and the second sealing ring 35, the sealing between the pipeline 1 and the first sleeve 31 is achieved; the top support ring 21 is sleeved on the external threaded rod 43, and the guide rod 22 is inserted into the third connecting seat 221, and the guide rod 22 is connected to the third connecting seat 221 by bolts; the limit nut 20 is threaded on the external threaded rod 43, and the limit nut 20 is turned down until the limit nut 20 presses the top support ring 21, and the first spring 24 is in a compressed state.

[0045] Embodiment 4:

[0046] Refer to the attached Figure 7 , which is different from Example 1, is that: the sealing assembly 4 also includes a second plugging head 45, the top of the second plugging head 45 is connected to the first telescopic rod 44 by bolts, and the top of the first telescopic rod 44 is connected to the first plugging head 41 by bolts; the fixing assembly 3 also includes a second sleeve 34, a second sealing ring 35 is inserted into the inner cavity of the second sleeve 34, a third internal threaded hole 341 is opened on the second sleeve 34, and a fourth internal threaded hole 351 is opened on the second sealing ring 35, the second sleeve 34 and the second sealing ring 35 are connected to the pipeline 1 through a second bolt 36, the second sleeve 34 is connected to the first telescopic rod 37 by bolts, and one end of the first telescopic rod 37 is connected to the first sleeve 31 by bolts.

[0047] When in use, the second plugging head 45 and the first plugging head 41 are inserted into the pipeline 1, and the first sleeve 31 is covered on the top of the pipeline 1, so that the first internal threaded hole 311, the second internal threaded hole 321 and the internal threaded groove 11 are aligned, and the first sleeve 31 and the first sealing ring 32 are fixed to the pipeline 1 by the first fastening bolt 33, and the third internal threaded hole 341 and the fourth internal threaded hole 351 are aligned with the internal threaded groove 11 below the pipeline 1 by the extension and contraction of the first telescopic rod 37, and the second plugging head 45 is driven to be consistent in height with the second bolt 36 by the first telescopic rod 44, and the second sleeve 34 and the second sealing ring 35 are connected to the pipeline 1 by the second bolt 36. At this time, the length direction of the first fastening bolt 33 passes through the first plugging head 41, that is, the first fastening bolt 33 and the second bolt 36 are fixed. The pipeline 1 will not be deformed by being squeezed, and the sealing between the pipeline 1 and the first sleeve 31 is achieved under the action of the first sealing ring 32 and the second sealing ring 35; the top support ring 21 is sleeved on the external threaded rod 43, and the guide rod 22 is inserted into the third connecting seat 221, and the guide rod 22 is connected to the third connecting seat 221 by bolts; the end of the pin rod 251 with the clamping rod 252 is first passed through the third through hole 213 (so that the clamping rod 252 shuttles along the rectangular through hole 263), after passing through, the second spring 29 is in a compressed state, the pin rod 251 is rotated 90 degrees until the clamping rod 252 is aligned with the rectangular groove 262, and after releasing the clamping rod 252, it enters the rectangular groove 262 under the elastic force of the second spring 29 until the limit nut 20 presses the top support ring 21, and the first spring 24 is in a compressed state.

[0048] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A packer for oil production, comprising a pipeline (1), wherein the inner wall of the pipeline (1) is slidably connected to a packer assembly (4), characterized in that: The pipe (1) is detachably connected to a fixing component (3), the fixing component (3) is fixedly connected to a limiting component (2) at its top end, and the sealing component (4) is detachably mounted on the limiting component (2); the sealing component (4) comprises a first sealing head (41), the top end of the first sealing head (41) is detachably connected to an externally threaded rod (43); the limiting component (2) comprises a guide rod (22), the outer wall of the guide rod (22) is sleeved with a hollow sleeve (23) and a first spring (24), the bottom end of the guide rod (22) is detachably connected to a bottom support ring (27), the outer wall of the hollow sleeve (23) is detachably connected to a top support ring (21), the top support ring (21) is provided with a first through hole (212), the bottom support ring (27) is provided with a second through hole (271), and the externally threaded rod (43) passes through the first through hole (212) and the second through hole (271); A first connecting seat (42) is welded to the top end of the first plugging head (41); the externally threaded rod (43) is inserted into the inner wall of the first connecting seat (42); and the first connecting seat (42) and the externally threaded rod (43) are connected by bolts; The outer walls of both ends of the top support ring (21) are plugged with second connection seats (211), the second connection seat (211) and the top support ring (21) are connected by bolts, and the second connection seat (211) is welded to the outer wall of the hollow sleeve (23); the top of the bottom support ring (27) is fixedly mounted with a third connection seat (221), the inner wall of the third connection seat (221) is plugged with the guide rod (22), the guide rod (22) and the third connection seat (221) are connected by bolts, and the first spring (24) is located between the hollow sleeve (23) and the third connection seat (221); The fixing assembly (3) comprises a first sleeve (31), a first sealing ring (32) is inserted into an inner cavity of the first sleeve (31), a first internal threaded hole (311) is formed on the first sleeve (31), a second internal threaded hole (321) is formed on the first sealing ring (32), an internal threaded groove (11) is formed on the outer wall of the pipe (1), the internal threaded groove (11), the second internal threaded hole (321) and the inner wall of the first internal threaded hole (311) are threadedly connected to a first fastening bolt (33), and the top end of the first sleeve (31) is fixedly connected to a bottom support ring (27); The limiting assembly (2) further comprises a limiting nut (20), the inner wall of the limiting nut (20) being threadedly connected to the external threaded rod (43), and the outer diameter of the limiting nut (20) being larger than the aperture of the first through hole (212); The limit assembly (2) further comprises a fixed plate (25), one end of the fixed plate (25) being fixedly connected to a pin rod (251), one end of the pin rod (251) being fixedly connected to a clamping rod (252) away from the fixed plate (25), a second spring (29) being sleeved on the pin rod (251), and the clamping rod (252) being clamped to the fixed plate (26); the bottom end of the fixed plate (26) being detachably connected to a support column (28), and the bottom end of the support column (28) being detachably connected to a bottom support ring (27).

2. A packer for oil production according to claim 1, characterized in that: The top support ring (21) is provided with a third through hole (213), and the inner wall of the third through hole (213) is slidably connected to the pin rod (251); the fixing plate (26) is provided with a fourth through hole (261), a rectangular through hole (263) and a rectangular groove (262), and the rectangular through hole (263) and the rectangular groove (262) are both connected to the fourth through hole (261), and both ends of the clamping rod (252) are clamped into the rectangular groove (262); the bottom end of the fixing plate (26) is fixedly connected to the fourth connecting seat (281), and the top end of the bottom support ring (27) is fixedly connected to the fifth connecting seat (282); the outer walls of both ends of the support column (28) are respectively plugged into the fourth connecting seat (281) and the fifth connecting seat (282), and the fourth connecting seat (281) and the fifth connecting seat (282) are both connected to the support column (28) by bolts.

3. A packer for oil production according to claim 2, characterized in that: The sealing assembly (4) further comprises a second sealing head (45), the top end of the second sealing head (45) being connected to the first telescopic rod (44) via bolts, and the top end of the first telescopic rod (44) being connected to the first sealing head (41) via bolts.

4. A packer for oil production according to claim 3, characterized in that: The fixing assembly (3) further comprises a second sleeve (34), a second sealing ring (35) being inserted into an inner cavity of the second sleeve (34), a third internal threaded hole (341) being formed on the second sleeve (34), a fourth internal threaded hole (351) being formed on the second sealing ring (35), the second sleeve (34) and the second sealing ring (35) being connected to the pipeline (1) via a second bolt (36), the second sleeve (34) being connected to a second telescopic rod (37) via a bolt, and one end of the second telescopic rod (37) being connected to the first sleeve (31) via a bolt.

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