Mineshaft multiphase flow device for simulating deep-water oil and gas production

Abstract

The invention relates to a mineshaft multiphase flow device for simulating deep-water oil and gas production. In the technical scheme, the simulation of ocean low temperature environment condition is completed by an environment temperature flowing maintaining system, wherein a liquid part of high pressure flow environment is mainly formed by the connection of a water tank, a high pressure water pump, a flow liquid temperature control system and a flow meter, a gas part is mainly formed by the connection of a gas compressor, a high pressure gas tank, a drier and a gas flow meter, and a gas-liquid mixture is completed through a bubble generator and then flows through a control valve to enter into a main mineshaft; natural gas hydrate decomposed injected gas is simulated, and flows through acontrol system and a gas injection pipeline to enter into the main mineshaft; mixed liquid enters into a gas-liquid separating tank through a backflow pipeline to complete circulation. The invention has the advantages of capability of simulating deepwater low temperature oil and gas production at 1000 meters depth of water, further researches on multiphase flow law inside the mineshaft under deepwater flow condition, and establishes a multiphase flow state mechanical model of the deepwater mineshaft and a computing method.

Description

1. Technical field: [0001] The invention relates to a supercritical pipeline natural gas flow simulation and testing experiment platform, in particular to a wellbore multiphase flow device capable of simulating deep-water oil and gas exploitation under the condition of high temperature and high pressure supercritical state. 2. Background technology: [0002] As land oil and gas resources are decreasing day by day, it has become an inevitable trend for oil and gas exploration and development to turn to the sea. The development of underwater oil extraction technology not only makes deep sea oil extraction possible, but also greatly reduces the cost of deep sea oil extraction. The oil and gas drilling and production technology in deep water and ultra-deep water is becoming a research and development hotspot in various countries. At present, the maximum drilling water depth in foreign countries has exceeded 3,000 meters, while the exploration and development of oil and gas resou...

AI Technical Summary

Problems solved by technology

These unfavorable factors will inevitably affect the normal operation of the drilling system, and in some serious cases, even lead to serious accidents

The heat transfer and flow laws of deep-water multiphase flow are the theoretical basis for the research and development of deep-water drilling and production technology. In recent years, although various relevant units have also established some experimental devices, these devices can only be tested under normal pressure and adiabatic conditions. There are still deficiencies such as aging equipment, narrow experimental parameters, and low instrument accuracy, which can no longer meet the needs of multiphase flow research under deep water conditions.

At present, there is little equipment research and development in this area, and there are no reports on wellbore multiphase flow devices for simulating deepwater oil and gas production.

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