Multi-well wellhead dosing device with backflow self-protection multichannel solenoid valve terminal

Abstract

The invention discloses a multi-well wellhead dosing device with a backflow self-protection multichannel solenoid valve terminal, and belongs to the field of wellhead dosing for cluster well groups in oil fields. The device at least comprises a dosing box, a control cabinet, the multichannel solenoid valve terminal, a high-pressure metering dosing pump, a pressure gauge, related pipelines and related control circuits; the multichannel solenoid valve terminal at least comprises a distribution valve terminal base, high pressure solenoid ball valves, a liquid return port and a liquid inlet; the liquid inlet and the liquid return port are integrated on one distribution valve terminal base; a plurality of high pressure solenoid ball valves are arranged symmetrically by taking a perpendicular center line of the distribution valve terminal base as an axis. Through the multichannel solenoid valve terminal with a pressure adjusting protective valve, the multi-well wellhead dosing device has a pressure protection function. When the pressure of a certain well is abnormal, the pressure adjusting protective valve can be automatically opened to form a circulation loop, an agent is prevented from flowing back into the solenoid valves and the dosing pump, and remote auto-control wellheads of the cluster well groups in the oil fields work safely without fault in the dosing process.

Description

technical field [0001] The invention relates to the field of wellhead dosing of oil field cluster well groups, in particular to a multi-well wellhead dosing device with backflow self-protection multi-channel electromagnetic valve island. Background technique [0002] Cluster well group is the product of oilfield drilling engineering and development technology progress. The emergence of cluster well groups will have a positive influence and effect on the design and construction of oilfield surface engineering. The so-called cluster well group means that several or even hundreds of wells are drilled on one well site or platform, the wellheads of each well are less than a few meters apart, and the well bottoms of each well extend to different directions. [0003] With the development of digital technology, many digital equipment have been widely used in oilfield cluster wells in my country, and oilfield production and digital technology have been effectively integrated. In re...

AI Technical Summary

Problems solved by technology

[0007] (1) Due to the high pressure of downhole casing gas, the one-way valve of the pipeline is broken down, the solenoid valve is damaged, and the chemical agent flows back into the solenoid valve and the dosing pump, resulting in abnormal operation of the equipment

[0008] (2) Since the pipeline is easy to cause blockage, the pressure of the solenoid valve increases, resulting in leakage of the pipeline joint and failure

[0009] (3) Since 5-15 solenoid valves all require a separate connecting cable, the connection circuit is cumbersome, the wiring workload is heavy, and the accuracy of the wiring operation affects the improvement of the protection level

[0010] (4) Since there are check valves, three-way valves, return valves, etc. connected to different pipelines of the dosing device, the entire system is huge and inconvenient to maintain

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