Pressure pulse oil well stimulation device and its application method
A technology of pressure pulse and application method, which is applied in the direction of earthwork drilling, wellbore/well components, production fluid, etc. It can solve problems such as insignificant effect, difficulty in reinjection, formation obstruction, etc., to achieve enhanced oil recovery and increase The effect of the water injection effect
Active Publication Date: 2015-11-11
山东高原油气装备有限公司
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Problems solved by technology
The vibration oil recovery technology used in the early stage, such as artificial seismic oil recovery, hydraulic vibration oil recovery, and acoustic wave oil recovery technology, due to technical and key equipment problems, the effect is not obvious and the development is relatively slow
Conventional water injection injects water into the formation at normal pressure, but due to the obstruction of the formation, the pressure fluid has not completely penetrated and the oil well is attached, and the ground water injection is difficult to inject again, showing a "saturation" state
Method used
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Embodiment 1
[0018] refer to Figure 1-3 , a pressure pulse oil well stimulation device, comprising a casing 6, an oil pipe 8 and a wellhead joint 2, a pressure pulse launching tool 10 is installed at the bottom of the oil pipe 8, and a perforation 11 is arranged on the corresponding casing wall; the oil pipe 8 and the casing The annulus 12 between the pipes 6 is provided with a packer 9; the wellhead joint 2 is also provided with an air bag 1, which communicates with the high-pressure fluid in the oil pipe; Connect the controller 3 of the wellhead.
[0019] The pressure pulse launching tool 10 includes a cylindrical body 17, the upper end of which is provided with an upper interface 18 connected to the oil pipe 8, and the lower end is provided with a bottom-sealed guide rod 19, and a lower outlet is provided between the guide rod 19 and the cylindrical body 17. 20, and open and close through the slide block 14 slidingly fitted on the guide rod 19; the movement of the slide block 14 is co...
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The invention relates to a piece of oil well production-increasing equipment used in the oil industry, in particular to a pressure-pulse oil well production-increasing device. The technical scheme is as follows: the pressure-pulse oil well production-increasing device comprises a casing, an oil pipe and a wellhead joint, wherein a pressure-pulse ejecting tool is installed at the bottom of the oil pipe; the wall of the casing, corresponding to the pressure-pulse ejecting tool, is provided with ejecting holes; and a packer is arranged on an annular space between the oil pipe and the casing. When the equipment is used, high-pressure liquid is injected into the oil pipe through the wellhead joint, high-pressure pulse liquid is ejected through the pressure-pulse ejecting tool, enters the annular space, and then enters a water injection layer through the ejecting holes in a high pressure, high sped and pulse mode, thus, the permeability of an oil layer is ensured. Compared with the prior art, the equipment is used in an ordinary water injection well; and stable pressure liquid is converted into periodic pressure-pulse liquid by using the pressure-pulse ejecting tool and is subsequently injected into a ground layer, so that the water injection effect is significantly improved, and the raw oil recovery efficiency is greatly improved.
Description
technical field [0001] The invention relates to oil well stimulation equipment used in the petroleum industry, in particular to a pressure pulse oil well stimulation device. Background technique [0002] In order to improve the production and recovery of oil and gas layers, various oilfields widely adopt a variety of stimulation technology measures, including oilfield water injection, fracturing and acidification and microbial oil recovery technology, thermal oil recovery technology, vibration oil recovery technology, polymer flooding and carbon dioxide flooding technology. The use of these technologies has enhanced the oil and gas recovery, but these technologies can only enhance the recovery to a very limited extent. The vibration oil recovery technology used in the early stage, such as artificial seismic oil recovery, hydraulic vibration oil recovery, and acoustic wave oil recovery technology, has no obvious effect due to problems in technology and key equipment, and its...
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IPC IPC(8): E21B43/16
Inventor潜凌林传宏
Owner山东高原油气装备有限公司