Bypass tertiary oil recovery online sampling device

Abstract

A bypass tertiary oil recovery online sampling device comprises a connector I, a worm gear ball valve I, a pressure relief valve, a pressure relief cavity, an emptying valve, a connector II, a sampling valve, a worm gear ball valve II, a connector III and an elbow. The bypass tertiary oil recovery online sampling device is characterized in that interception and sampling of a solution are achieved by controlling opening and closing of valves and is a double-connector direct-connection parallel-pipeline novel online anti-theft spraying-preventing sampling device developed and produced for oil field tertiary oil recovery process. By adopting a low-shearing ball valve, the diameter of an inlet / outlet of polymers is increased, sampling viscosity retention rate is high, and the accuracy of sampling and testing data is guaranteed. The elbow is connected with a right angular pipeline, fluid resistance is small, and solution shear rate is low. A worm gear is used for driving a polymer injection high-pressure ball valve, opening and closing are fast, pressure relief combination design is adopted, high-pressure solution spraying is prevented, main components are welded, the device is prevented from being stolen effectively, the components are made of stainless steel, and chemical degradation is not generated. Safe and economic production of oil recovery is achieved.

Description

technical field [0001] The invention relates to the technical field of oil recovery in oil fields, and relates to an oil recovery sampling device, in particular to a bypass type tertiary oil recovery on-line sampling device. Background technique [0002] As the world's demand for oil continues to increase, oil is a limited non-renewable energy source, and the chances of rediscovering larger oil storage oil fields are reduced. The developed oil fields are aging, and the unexploited oil fields are mostly heavy oil, super heavy oil, etc. that are difficult to recover. Reserves, which forces the industry to focus on technologies to enhance the recovery of mature oilfields. Tertiary oil recovery technology is an important oil recovery technology that can use new technologies such as physics, chemistry and biology to enhance oil recovery. Divided from the stages of oil production and technical means, oil production is divided into three stages. That is, primary oil recovery, sec...

AI Technical Summary

Problems solved by technology

The main manifestations are: first, the anti-theft oil performance is poor, criminals often open the gate from the oil well sampling device to steal oil; second, the dead oil remaining in the short circuit must be released before each sampling to ensure that the data is collected It is true and accurate, which is inconvenient to operate and will cause environmental pollution. If the temperature is low in winter, it is easy to form ice blockage and the mountain oil cannot be released.

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