Heavy oil thermal recovery casing pipe testing device

Abstract

The invention discloses a heavy oil thermal recovery casing pipe testing device, belonging to wellhead control mechanical equipment. The testing device comprises a casing pipe, an assisting rod, a pressurization pipeline, a loading device, a heating device, a displacement sensor, a thermocouple, a leak collecting device and an internal pressure sensor, wherein the leak collecting device is arranged on the outer surface of a coupling of the casing pipe, the casing pipe is connected with the loading device by the assisting rod, the internal pressure sensor is connected with the pressurization pipeline by the assisting rod, the heating device is wrapped on the surface of the casing pipe, the two ends of the displacement sensor are fixed at the two ends of the casing pipe by fixing devices, and the thermocouple is fixed on the casing pipe by a hose clamp. With the adoption of the mode of repeated temperature rising and dropping, the testing device can effectively simulate the true situation of the service of the casing pipe in a heavy oil thermal recovery well and can perform accurate evaluation on the applicability of the casing pipe.

Description

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AI Technical Summary

Benefits of technology

This technology uses repetitive heat-cool cycles that mimic how an existing drilling rig works at high temperatures for recovering bitumen from subterranean formations. By doing this it helps predict what happens when there are more severe environmental factors like temperature or pressure changes over time compared with older methods such as static loading analysis (SCA). It also allows researchers to study different types of materials used during production without having to actually set up them downstream on site. Overall, these technical improvements make better understanding about the properties of cased boreholes made by various techniques including steam injection into hot water flood reservoirs improving their effectiveness against stress corrosion crackings caused by cyclical variations in surrounding pressurized fluids.

Problems solved by technology

Technological Problem: Existing thermal recovery testing for simulating the repetitive temperature change caused by injecting fluid into an underground reservoir requires large equipment that can be expensive or difficult to install at different locations within the reservior. Additionally, current simulations only model the effects of pressure loading during initial stages but neglect any other factors like strain hardening which may occur over time due to cycling between temperatures.

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