Experimental device used for studying influences of sandwich layers on SAGD mining of dual horizontal well

Abstract

The invention relates to an experimental device used for studying the influences of sandwich layers on SAGD mining of a dual horizontal well. The experimental device comprises a device body and a maincontrol unit, wherein the device body comprises an experimental device box, an SAGD well group mould, a sandwich layer mould device, a sandwich layer mould, a groove, a sandwich layer mould device interface, an outer ring seal, an inner ring insertion opening, a sandwich layer mould insertion channel, a heat insulation device, a mudstone cap rock device and a temperature sensor; the main controldevice comprises a data processing module, a data visualization module, a data analyzing module, a steam generation device and the like; the experimental device further comprises other small parts, such as oil drawing devices, pipelines, pressure gages, flow meters, switches, beakers, steam holes and a crude oil reservoir. The experimental device can simulate the influences of the sandwich layerswith different physical properties, different widths, different angles and different opening degrees on SAGD mining of the dual horizontal well, the SAGD mining way can be monitored and adjusted by the main control device, the application range is greatly widened, and the accuracy is greatly improved.

Description

technical field [0001] The invention relates to the technical field of SAGD mining, in particular to an experimental device for studying the influence of interlayers on double-level SAGD mining. Background technique [0002] SAGD-Steam Assisted Gravity Drainage, that is, steam-assisted gravity drainage, as a technology in the field of thermal oil recovery technology, can obtain a higher recovery rate in the development of heavy oil, super heavy oil and oil sands, and is widely used in major oilfields around the world. It has been successfully applied in heavy oil reservoir areas. SAGD well layout is mainly divided into vertical well-horizontal well and double horizontal well pattern, among which the double horizontal well SAGD well pattern is widely used. SAGD principle of dual horizontal wells: two horizontal wells are arranged in parallel, with upper injection and lower production. Above, the steam chamber covers the oil layer above the production well, and is driven by ...

AI Technical Summary

Problems solved by technology

In most heavy oil reservoirs, large or small interlayers with uneven physical properties are often distributed. The existence of interlayers will affect the heat transfer of steam carried by high-dryness steam and affect the production effect.

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