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CN-121976775-A - Improved structure of petroleum underground ball throwing sliding sleeve

CN121976775ACN 121976775 ACN121976775 ACN 121976775ACN-121976775-A

Abstract

The invention discloses an improved structure of a petroleum underground ball throwing sliding sleeve, which relates to the technical field of ball throwing sliding sleeves and comprises a pipeline, wherein connectors are fixedly connected to two ends of the pipeline, a plurality of groups of clamping components are arranged on the outer wall of the pipeline, the sliding sleeve is arranged in the pipeline, the ball throwing is arranged in the sliding sleeve, each group of clamping components comprises a pin, one end of each pin penetrates through the inner wall of the pipeline, and a positioning block is sleeved on one end of each pin through a thread. According to the invention, the elastic unlocking mechanism is formed by the button, the round tube and the spring, under normal working conditions, the elastic force of the spring pushes the round tube to prop against the inside of the pin, the threaded connection locking of the pin and the positioning block is ensured, the loosening of threads is prevented, when the sliding sleeve needs to be disassembled for maintenance, the button is pressed to compress the spring, the round tube is driven to retract, the locking state of the pin can be rapidly removed, the pin can be pulled out after the positioning block is screwed out, and the cutting-free rapid disassembly of the sliding sleeve is realized.

Inventors

  • TIAN TAO
  • LI JUN
  • LIU JIANGTAO

Assignees

  • 新疆罡拓能源科技有限公司

Dates

Publication Date
20260505
Application Date
20260326

Claims (9)

  1. 1. The improved structure of the petroleum underground ball throwing sliding sleeve comprises a pipeline (1) and is characterized in that two ends of the pipeline (1) are fixedly connected with connectors (2), a plurality of groups of clamping assemblies (3) are arranged on the outer wall of the pipeline (1), the sliding sleeve (4) is arranged in the pipeline (1), and a ball throwing (7) is arranged in the sliding sleeve (4); The clamping assembly (3) comprises a pin (301), one end of the pin (301) penetrates through the inner wall of the pipeline (1), a positioning block (303) is sleeved at one end of the pin (301) in a threaded mode, a clamping block (302) is hinged to the other end of the pin (301), a button (306) is arranged at one end of the pin (301), a circular tube (305) is fixedly connected to one end of the button (306), the circular tube (305) moves inside the pin (301), and a spring (304) is connected to one end of the circular tube (305); External threads are formed in the outer side of the pipeline (1), a secondary locking assembly (10) is connected to the outer side of the pipeline (1) through the external threads in a threaded mode, and the secondary locking assembly (10) is used for preventing the locating block (303) from falling off.
  2. 2. The improved structure of the petroleum underground ball throwing sliding sleeve as claimed in claim 1, wherein the secondary locking assembly (10) comprises a rotary sleeve ring (101), a plurality of threaded holes I are formed in the rotary sleeve ring (101), and a locking bolt (102) is connected to the inner portion of each threaded hole I in a threaded mode.
  3. 3. The improved structure of the petroleum underground ball throwing sliding sleeve according to claim 1, wherein each positioning block (303) is provided with fixing holes matched with threaded holes I, and the number of the threaded holes I is the same as that of the fixing holes.
  4. 4. The improved structure of the petroleum underground ball throwing sliding sleeve according to claim 1, wherein the outer wall of the pipeline (1) is provided with a plurality of first round holes (9), and one end of the pin (301) penetrates through the first round holes (9).
  5. 5. The improved structure of the petroleum underground ball throwing sliding sleeve as claimed in claim 2, wherein a key groove is formed in the surface of the other end of the pin (301), and the positioning block (303) is installed in the key groove.
  6. 6. The improved structure of the petroleum underground ball throwing sliding sleeve as claimed in claim 3, wherein one end of the spring (304) is fixedly connected with a quadrangle plate, and the quadrangle plate is fixedly connected with the inner wall of the pin (301).
  7. 7. The improved structure of the petroleum underground ball throwing sliding sleeve according to claim 4, wherein a vertical plate (5) is fixedly connected to the outer wall of the sliding sleeve (4), a vertical groove (8) is formed in the pipeline (1), and the vertical plate (5) is clamped in the vertical groove (8).
  8. 8. The improved structure of the petroleum underground ball throwing sliding sleeve is characterized in that a second round hole (6) is formed in the surface of the vertical plate (5), and the first round hole (9) and the second round hole (6) are symmetrical.
  9. 9. The improved structure of the petroleum underground ball throwing sliding sleeve according to claim 6 is characterized in that rubber rings are arranged on the inner walls of the first round hole (9) and the second round hole (6).

Description

Improved structure of petroleum underground ball throwing sliding sleeve Technical Field The invention relates to the technical field of ball throwing sliding sleeves, in particular to an improved structure of an underground petroleum ball throwing sliding sleeve. Background The utility model provides a petroleum underground ball-throwing sliding sleeve is the core downhole tool of oil gas well staged fracturing transformation, mainly used horizontal well, the layering fracturing operation of highly deviated well, and the core effect is realized the accurate opening of reservoir section and the control of fracturing passageway through the mode of ball-throwing holding down the pressure, finally promotes the efficiency of using and the oil gas well productivity of heterogeneous reservoir. The existing improved structure of the petroleum underground ball-throwing sliding sleeve is characterized in that the sliding sleeve moves downwards, the pin can be destroyed neatly or not, the pin after the pin is destroyed by extrusion cannot be used for a second time, and resource waste is easy to cause. Disclosure of Invention In order to overcome the defects of the prior art and solve at least one technical problem in the background art, the invention provides an improved structure of an underground petroleum ball injection sliding sleeve. The invention solves the technical problems by adopting the technical scheme that the improved structure of the petroleum underground ball throwing sliding sleeve comprises a pipeline, wherein two ends of the pipeline are fixedly connected with connectors, the outer wall of the pipeline is provided with a plurality of groups of clamping components, the sliding sleeve is arranged in the pipeline, and the ball throwing is arranged in the sliding sleeve; the clamping assembly comprises a plurality of groups of pins, one ends of the pins penetrate through the inner wall of the pipeline, a positioning block is sleeved at one end of each pin in a threaded manner, a clamping block is hinged to the other end of each pin, a button is arranged at one end of each pin, a circular tube is fixedly connected to one end of each button, the circular tube moves in the pin, and a spring is connected to one end of each circular tube; The outer side of the pipeline is provided with external threads, the outer side of the pipeline is connected with a secondary locking assembly through the external threads, and the secondary locking assembly is used for preventing the locating block from falling off. Preferably, the secondary locking assembly comprises a rotary lantern ring, a plurality of first threaded holes are formed in the rotary lantern ring, and locking bolts are connected to the inner portions of the first threaded holes in a threaded mode. Preferably, each positioning block is provided with fixing holes matched with first threaded holes, and the number of the first threaded holes is the same as that of the fixing holes. Preferably, the outer wall of the pipeline is provided with a plurality of first round holes, and one end of the pin penetrates through the first round holes. Preferably, a key groove is formed in the surface of the other end of the pin, and the positioning block is arranged in the key groove. Preferably, one end of the spring is fixedly connected with a quadrangle plate, and the quadrangle plate is fixedly connected with the inner wall of the pin. Preferably, the outer wall fixedly connected with riser of sliding sleeve, vertical groove has been seted up to the inside of pipeline, riser block is in the inside in vertical groove. Preferably, the surface of the vertical plate is provided with a second round hole, and the first round hole and the second round hole are mutually symmetrical. Preferably, rubber rings are arranged on the inner walls of the first round hole and the second round hole. Compared with the prior art, the invention has the beneficial effects that: 1. According to the invention, the connecting head is used as a connecting part of a pipeline and an underground pipe column, so that the rigid connection and sealing performance of the whole sliding sleeve and the pipe column are ensured, the fracturing fluid is prevented from leaking from the connecting part, meanwhile, the standardized joint structure can be adapted to underground pipe columns with different specifications, the universality of the sliding sleeve is improved, a pin penetrates through the outer wall of the pipeline and stretches into the inner wall, the pin is matched with a locating groove preset on the outer wall of the sliding sleeve, a locating block is connected with the end part of a pin through threads, the pin stretching depth can be finely adjusted, the axial position of the sliding sleeve in the pipeline is precisely locked, the sliding sleeve is prevented from shifting due to the impact of underground fluid and vibration of the pipe column, the coaxiality of the ball throwing and sealing