Cluster well group oil production well chemical adding and associated gas recovery device

Abstract

The invention discloses a cluster well group oil production well chemical adding and associated gas recovery device. The cluster well group oil production well chemical adding and associated gas recovery device comprises a gas collecting and chemical adding header and a plurality of gas collecting units arranged on the header, wherein the gas collecting unit close to one end of the header communicates with the header through a single well chemical adding gas collecting pipe, the gas collecting unit close to the other end of the header communicates with the header through a gas phase balance pipe, and a gas-liquid separation mechanism is arranged at the end, close to the balance pipe, of the header; the balance pipe is further provided with a chemical adding funnel communicating with the header; and the gas collecting pipe and the chemical adding funnel are both provided with control valves. The cluster well group oil production well chemical adding and associated gas recovery device is high in practicability and functionality and can be widely applied to the technical field of oil well associated gas recovery devices.

Description

technical field [0001] The invention relates to the field of oil well associated gas recovery devices, in particular to a cluster well group oil production well dosing and associated gas recovery device. Background technique [0002] In recent years, the associated gas of the well group has been recovered through the gas collection at the wellhead of the constant pressure casing gas valve and the gas collection pipeline of the well group. Due to wax deposition and scaling in oil wells, it is necessary to add chemical additives such as wax remover and scale inhibitor to the bottom of the well from the casing mouth. At present, dosing is carried out through matching dosing kits, but the on-site utilization rate of the dosing kits is low, and it is still common to add medicines after the casing associated gas is emptied, resulting in waste of associated gas resources and environmental pollution. The main reasons are: the dosing bag is not suitable for the gas collection proces...

AI Technical Summary

Problems solved by technology

At present, dosing is carried out through supporting dosing kits, but the on-site utilization rate of dosing kits is low, and it is still common to add dosing after the associated gas in the casing is emptied, resulting in waste of associated gas resources and environmental pollution

The main reasons are: the dosing bag is not suitable for the gas collection process of the constant pressure valve, the installation process of the gas collection pipeline is not perfect, and there is no gas phase balance pipeline, so the dosing bag cannot be sealed and dosing only relying on the gravity of the drug; the volume of the dosing bag Small (5.2L), it needs repeated operations many times, which increases the labor intensity of employees; the actual height of the filling port of the dosing bag from the ground is as high as 1.2m on average, which is inconvenient to operate and increases the operational risk

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