Injection distribution device

Abstract

The invention belongs to the field of oil field water injection tools, in particular to an injection distribution device, which comprises an upper joint, an upper cylinder, an adapter, a lower cylinder, an installation main body, a lower joint, an upper central pipe and a lower central pipe. The upper joint, the upper cylinder, the adapter and the lower cylinder, the installation main body and thelower joint are sequentially connected through threads from top to bottom to form a shell of the injection distribution device, the upper end of the upper central pipe is inserted into the upper joint, an air pipe connected with the adapter passes through the installation main body and the lower joint and then leads to the outer side of the injection distribution device, two ends of the lower central pipe are respectively inserted between the adapter and the installation main body, a control valve assembly is arranged in the annular space, and a water nozzle assembly is arranged in the installation main body. Compared with a mechanical injection distribution device, the device has the advantages that a tool does not need to be taken off when water is dispensed, and the operation cost is greatly reduced; and compared with an electric control injection distribution device, the device has no strict working condition requirement, so the working stability is better, and the reliability ishigher.

Description

Technical field [0001] The invention belongs to the field of oilfield water injection tools, and in particular relates to a dispenser. Background technique [0002] The injector is a commonly used downhole tool in the tertiary oil recovery process of the oilfield. Its function is to adjust the polymer injection volume of each reservoir to better achieve the purpose of increasing production. At present, most of the dispensers used in oil fields are purely mechanical. After the dispenser is installed, it is necessary to take out the plug in the dispenser through downhole operations, and replace the water nozzle in the plug. To achieve the purpose of adjusting the injection volume, this adjustment method often occurs when the fishing device is stuck, and the success rate of fishing is low, which seriously affects the operation efficiency. [0003] In addition, there is also an electronically controlled dispenser in the prior art. When in use, the cable on the ground is connected to t...

AI Technical Summary

Problems solved by technology

However, there are obvious defects in this dispenser: the electrical part in this dispenser needs to be completely installed in a closed, dry, and waterproof space, so the sealing performance of the sealing structure in the dispenser is required to be high. In addition, the underground The higher temperature requires high temperature resistance of the electrical components in the dispenser, and many circuit components are easily damaged at high temperatures

It can be seen that the stability of the electronic control system of the electronic control dispenser is poor

[0004] Therefore, it is necessary to design a new dispenser to solve the problems of low operating efficiency and poor stability of the existing dispenser

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