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A double hydraulic operation window with adjustable working space

A technology with adjustable working space, applied in wellbore/well components, sealing/isolation, earthwork drilling and production, etc., can solve problems such as inability to meet downhole tool running and pulling out operations, restrictions, etc., and achieve rich specialization The effect of less demand, less labor, and reduced workload

Active Publication Date: 2017-08-25
SUZHOU DOUSON DRILLING & PRODION EQUIP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the traditional operating windows used in coiled tubing operations cannot meet the requirements for running in and out of large-sized downhole tools, which greatly restricts this operation. Therefore, it is very difficult to develop a double hydraulic operating window with adjustable working space. Needed

Method used

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  • A double hydraulic operation window with adjustable working space
  • A double hydraulic operation window with adjustable working space
  • A double hydraulic operation window with adjustable working space

Examples

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Embodiment

[0024] Such as figure 1 , figure 2 and image 3As shown, a double hydraulic operation window with adjustable working space, which includes connecting flange 1, stop ring 2, three adjustment oil cylinder assemblies 3, main hydraulic cylinder assembly 4, locking screw 5 and lock Tight block 6; wherein, the adjustment cylinder assembly 3 includes a head 31, a small cylinder 32, a small piston 33 and a fixed nut 34; the main cylinder assembly 4 includes a main cylinder and a main piston 43; the The above-mentioned main hydraulic cylinder is formed by fixing the cylinder body flange 41 and the supporting flange 42 by screws; the heads 31 of the three adjustment cylinder assemblies 3 are evenly distributed on the circumference of the connecting flange 1 and fixed with the connecting flange 1; The small oil cylinder 32 is fixed on the head 31; the small piston 33 passes through the support flange 42 after passing through the top of the small oil cylinder and is fixed with the supp...

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Abstract

The utility model relates to a double hydraulic operation window with an adjustable working space, which relates to the technical field of oil and gas drilling. The invention solves the problem that the traditional operation window used in the coiled tubing operation cannot satisfy the running-in and pulling-out operations of larger-sized downhole tools, which limits the operation. A double hydraulic operation window with adjustable working space, which includes a connecting flange, a stop ring, a plurality of adjusting cylinder assemblies, a main hydraulic cylinder assembly, locking screws and locking blocks; the adjusting cylinder assembly includes Head, small oil cylinder, small piston and fixed nut; the main hydraulic cylinder assembly includes the main hydraulic cylinder and the main piston; the main hydraulic cylinder is formed by fixing the cylinder body flange and the supporting flange with screws. The working space of the present invention is 3 to 5 times that of the conventional operation window, and the maximum working space can reach 1.5 meters. Two sets of hydraulic drive systems can be used to adjust the total height of the hydraulic operation window, thereby achieving the required connection length, which is extremely large. It enriches the special requirements of on-site drilling technology.

Description

technical field [0001] The invention relates to the technical field of oil and gas drilling, in particular to a double hydraulic operation window with adjustable working space. Background technique [0002] Most of the gas wells enter the later stage of production. As the energy of the formation decreases, the production decreases, and the gas flow rate in the production string decreases, resulting in the inability to discharge the formation water in time, resulting in bottom-hole fluid accumulation, which causes back pressure on the production layer, and ultimately results in gas well production. sharply decreased or even discontinued. The process of running small-diameter coiled tubing (velocity string) into the existing production tubing can reduce the fluid flow area, increase the fluid flow rate, improve the liquid drainage capacity of the gas well, and restore the gas well to spontaneous production. Coiled tubing has unique advantages as a production string, which can...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/03E21B23/00
Inventor 舒志高谭多鸿尹恩来曹和平周忠城肖艳平吕维平游庆宏
Owner SUZHOU DOUSON DRILLING & PRODION EQUIP
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