Method for improving high pressure water rotary jet velocity

Abstract

The invention discloses a method based on increasing the speed of the high-pressure water rotary jet. The treatment liquid is pressed by a cement truck, passes through a one-way valve and a filter, and then enters a rotary generator to generate multiple radial high-pressure water jets. Two organ pipe nozzles, in which two inclined power nozzles eject lateral jets to generate rotational torque, which drives the nozzle to rotate, and two radial nozzles generate radial high-frequency self-vibrating cavitation jets, which directly impact the pipe wall and formation, and the tool is in the downhole It moves up and down while rotating, and the rotation speed is controlled by the rotation controller. There are four hydraulic pulses per revolution, and at the same time, three physical effects of low-frequency rotating hydraulic waves, high-frequency oscillating shock waves, and cavitation noise ultrasonic waves are generated. Complete treatment of the perforated well section. The process can improve the fracturing effect, make the fracturing uniform, and at the same time, the phenomenon of sand jamming will not occur, and the fracturing efficiency will be improved.

Description

technical field [0001] The invention relates to the field of oil and gas exploitation, in particular to a method based on increasing the velocity of the high-pressure water rotating jet. Background technique [0002] Oil and gas is the gas that comes out of oil wells with oil, and its main components are methane, ethane, etc. Used as fuel and chemical raw material. Oil and gas generation has the following conditions. First, it depends on the amount of organic matter in the oil source layer, which is usually called "organic matter abundance". Mainly measure the residual organic carbon content in order to determine whether there are oil-generating layers in an area and how many oil-generating layers there are, and divide them into good, medium and poor oil-generating layers according to certain standards for classification and evaluation. Second, it depends on the quality of organic matter in the oil source layer, which is usually called "organic matter type". According to ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problems of uneven fracturing and easy sand jamming during fracturing in the above-mentioned existing fracturing technology, and design a method based on increasing the velocity of high-pressure water rotating jet, which can improve the fracturing effect , so that the fracturing is uniform, and the phenomenon of sand jamming will not occur at the same time, and the efficiency of fracturing is improved, which solves the problem of uneven fracturing and sand jamming during fracturing in the existing fracturing technology