Under-shaft fracture data wireless transmission device

Abstract

The invention discloses an under-shaft fracture data wireless transmission device. The under-shaft fracture data wireless transmission device comprises command labels, a ground information ball data reading device, a label putting device, an information ball capturing device, a motor control and dropping short joint, a main control communication short joint, a data collection short joint and a battery pack, the label putting device and the information ball capturing device are installed at a wellhead, and the motor control and dropping short joint, the main control communication short joint, the data collection short joint and the battery pack are installed on a coiled tubing; the label putting device is used for putting the command labels into a sleeve; the motor control and dropping short joint achieves storage of information ball data in a ball bin through a mutual inductance power output unit and a wireless communication unit, when the device is full of data, a motor drives the ball bin to carry out translation motion, and then information balls enter an annulus, and are exhausted to the ground; the data collection short joint is used for collecting underground pressure and temperature data; the main control short joint is used for receiving commands of the command labels, and controlling work of the mutual inductance power output unit, the wireless communication unit and the motor according to the commands of the command labels. By means of the under-shaft fracture data wireless transmission device, wireless transmission of under-shaft data can be achieved, and labor and material resources are saved on the condition that the fracture result is accurately monitored in real time.

Description

technical field [0001] The invention relates to the technical field of oil fracturing and testing, in particular to a wireless transmission device for downhole fracturing data. Background technique [0002] With the gradual deepening of oilfield development, in order to stabilize and increase the production of oil and gas wells, it is necessary to reform the formation, and fracturing is an important technical means to improve the development capacity of oil and gas fields. The monitoring technology of dynamic pressure value and temperature in the fracturing process is of great significance to study the fracturing process mechanism, understand the physical properties of the reservoir, and evaluate the effect of fracturing. During the construction process, the changes of displacement, liquid viscosity and sand ratio will cause changes in friction resistance and liquid column weight along the way, which will lead to large fluctuations in surface pressure, and it is difficult to...

AI Technical Summary

Problems solved by technology

During the construction process, due to the change of displacement, liquid viscosity and sand ratio, the friction along the way and the weight of the liquid column will change, which will lead to large fluctuations in surface pressure, and it is difficult to obtain accurate pressure data. The test data of the bottom hole pressure gauge is transmitted to the ground by wireless telemetry technology. The test personnel can directly take various measures in time according to the bottom hole situation, adjust the test work procedure, ensure that the data acquisition is comprehensive and accurate, solve the blindness of the test, and reduce the test switch well Mistakes in operation judgment and rework can improve the success rate of one-time testing, which can effectively shorten the time and cost of well testing, and then increase the production of oil and gas production. However, there is currently no convenient and practical wireless transmission method

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