Permeation enhancing device suitable for deep tight reservoir and using method
A technology for tight reservoirs and deep areas, which is used in vibration generating devices, earth-moving drilling and production, wellbore/well components, etc., can solve the problems of insufficient concentration of low-frequency wave energy, limited production stimulation and plugging removal effect, and limited effect, and achieves improvement. Seepage channel, increased production and stable oil recovery, cost-effective use
Pending Publication Date: 2022-05-10
CHINA UNIV OF PETROLEUM (EAST CHINA)
View PDF10 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, ultrasonic oil recovery technology has the following disadvantages: (1) Ultrasonic cavitation technology can only be used for plugging removal in the near-wellbore area, and the maximum radius of action is only 15 meters, so the effect is limited; limited
Among various low-frequency treatment methods, the low-frequency shock wave method has high energy and high efficiency, but the energy of the low-frequency wave is not concentrated enough, and it is difficult to apply most of the energy to the tight oil reservoir to be treated
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0040] The detailed description follows with reference to the accompanying drawings, which form a part hereof and, in the present invention, are shown by way of explanation of specific embodiments for carrying out the invention. It is to be understood that other embodiments may be utilized and structural or logical changes may be made without departing from the scope of the present invention. For example, features explained or described for one embodiment can be used on or in combination with other embodiments to yield a still further embodiment. It is intended that the present invention includes such modifications and variations. These examples were described with specific language, but they should not be construed as limiting the scope of the appended claims. The drawings are for explanatory purposes only and are not drawn to scale. For purposes of clarity, corresponding elements are denoted by the same reference numerals in the different drawings unless otherwise specifie...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a cavitation-directional low-frequency wave permeation enhancing device suitable for a deep tight reservoir and a using method, the device comprises a high-power generator set, an electric signal transmitter, a cable, a power amplification device, a low-frequency wave generator, a cable for transmitting electric signals and an elastic connection transmission mechanism, and mechanical vibration generated by the generator is low-frequency waves; the using method comprises the following steps: 1, selecting a vibration oil extraction construction well; 2, equipment installation; 3, setting parameters; 4, starting a high-power cavitation-directional low-frequency wave oil extraction system; and 5, measuring the oil well yield and analyzing the yield increasing effect. The device is novel in design, convenient and safe to install and arrange, environment-friendly, high in practical value, wide in application prospect and capable of effectively achieving the purposes of permeation increasing and yield increasing of oil and gas fields.
Description
technical field [0001] The invention belongs to the field of oilfield reservoir transformation, and in particular relates to a method for improving permeability, production and injection of deep tight reservoirs by low-frequency waves. [0002] technical background [0003] With the deepening of oil and natural gas development in my country, deep tight oil reservoirs have become an important potential development target for the development of the oil industry. However, due to factors such as long distance of deep reservoirs, low permeability of tight reservoirs and difficulty in reaching chemical agents in the middle and later stages of development, low-permeability tight reservoirs generally have low production and poor recovery effects. Therefore, there is an urgent need for auxiliary development techniques to improve the degree of crude oil production and recovery inside the reservoir. [0004] Ultrasonic oil recovery technology is one of the tertiary oil recovery technol...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/00E21B28/00
CPCE21B43/003E21B28/00
Inventor 王富华王路一张志豪孙泽壮张卫东时贤葛永召
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)