Novel sliding sleeve tool for achieving opening without ball throwing pressure control

A new type of pressure control technology, applied in wellbore/well valve devices, wellbore/well components, earthwork drilling and production, etc., can solve the problems of large consumables, long time consumption, difficulty in meeting the requirements of new fracturing processes, etc., and achieve Effect of Stabilizing Injection Pressure

Active Publication Date: 2017-08-11
YANGZHOU CHUANGQUN NETWORK TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the gradual development of horizontal well technology, the length of the horizontal section is gradually increasing. However, the traditional bridge plug perforation staged fracturing technology has many supporting equipment, complex processes, many consumables, and long time consumption. The size level limits the number of fractur

Method used

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  • Novel sliding sleeve tool for achieving opening without ball throwing pressure control
  • Novel sliding sleeve tool for achieving opening without ball throwing pressure control
  • Novel sliding sleeve tool for achieving opening without ball throwing pressure control

Examples

Experimental program
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Example Embodiment

[0019] According to the attached drawing, the new sliding sleeve tool with no-throwing pressure control to realize opening is mainly composed of upper joint, outer shell, starting piston, starting spring, central tube, starting piston joint, switch piston, rail pin A, spring stopper It consists of a ring, a positioning spring, a spring holder, a lower joint, a positioning screw, a driving piston rod seat, a driving piston rod, a track pin B, etc., and is characterized in that the upper joint 1, the outer housing 2 and the lower joint 12 are sequentially connected by threads; There are 3 blind holes spaced 120° apart in the radial direction of the joint 1, and 3 holes spaced 120° apart in the axial direction to communicate with the three blind holes in the radial direction; drive piston The rod 15 is located in the three axial circular holes of the upper joint 1, and its lower end is connected with the driving piston rod seat 14 to fix it with the starting piston 3. The starting ...

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PUM

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Abstract

The invention discloses a downhole tool for achieving automatic opening and closing of a sliding sleeve by using liquid pressure and the tool is applied in the fields of petroleum development and the like. The technical scheme is as follows: an upper connector, an outer shell and a lower connector are connected through threads in sequence, the upper end of a central pipe is in threaded connection with the upper connector, the lower end of the central pipe is pressed tightly by the lower connector, a starting piston connector is located between the central pipe and the outer shell and connected with the central pipe through a positioning bolt, axial-direction positioning and circumference-direction positioning of the starting piston connector are achieved, a switch piston is located between the starting piston connector and a spring retainer ring and connected with the central pipe through a track pin A, positioning of the switch piston is achieved, a positioning spring achieves positioning through a spring clamping base and the spring retainer ring, the spring clamping base is located between the lower connector and the positioning spring, and axial-direction positioning of the spring clamping base is achieved through the lower connector. The tool can be used for well washing, water injection and fracturing in the oil drilling process.

Description

technical field [0001] The invention relates to the technical field of petroleum exploitation, in particular to a downhole device used for fracturing, water injection and well washing of oil and gas wells. Background technique [0002] In order to explore technical methods to increase the production of oil production wells and oilfield recovery, domestic and foreign oilfields have extensively tried and applied horizontal well production technology in various oil and gas reservoirs. Horizontal well production can contact a larger area of ​​oil and gas reservoirs. Compared with vertical wells, the drainage area is increased, which can improve the control degree of oil and gas reservoirs, thereby increasing the production of single wells. The production of horizontal wells is generally more than three times that of vertical wells. With the continuous development and improvement of horizontal well fracturing technology, the effective production of oil and gas reservoirs that are...

Claims

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Application Information

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IPC IPC(8): E21B34/14
CPCE21B34/14
Inventor 田家林杨毅杨应林朱志李居瑞林晓月张堂佳
Owner YANGZHOU CHUANGQUN NETWORK TECH CO LTD
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