Horizontal well sand-water co-production and control and mining well completion multifunctional experimental system and experimental method thereof

Abstract

The invention discloses a horizontal well sand-water co-production and control and mining well completion multifunctional experimental system and an experimental method thereof. The experimental system comprises a central control system and further comprises a liquid storage tank, a water pump, a reservoir simulation unit, a transparent shaft, a sand-liquid separation sand collector and a backflowpump which are sequentially connected through pipelines. The experimental method comprises a horizontal well non-uniform water outlet profile and a dynamic evolution simulation experiment and a horizontal well sand-water control horizontal well comprehensive flow simulation experiment thereof, a horizontal well sand-water co-production profile and a dynamic evolution simulation experiment thereof, a horizontal well non-uniform sand production profile and a dynamic evolution simulation experiment thereof, a horizontal well circulating gravel packing sand prevention process simulation experiment and various experiments, a series of experiments are carried out, more accurate mathematical simulation calculation results are obtained, important scientific value and engineering guiding significance are provided for improving horizontal well development effects of oil and gas reservoirs, and important reference values are provided for horizontal well development of unconventional oil gas andnatural gas hydrate reservoirs.

Description

Technical field [0001] The invention relates to the technical field of horizontal well sand and water control and exploitation and completion experiment simulation technology in the oil and natural gas exploitation industry, and specifically relates to a horizontal well sand-water coordinated production and control and exploitation and completion multifunctional experiment system and an experiment method thereof. Background technique [0002] Horizontal wells have the advantages of long production interval, large discharge area, and high single well production. They have long been an important technical means for oil and natural gas development. A large amount of water and severe sand are the most difficult problems faced by horizontal well mining technology. Once the horizontal well sees water, the entire wellbore will be flooded in a short period of time, causing the water production of oil and gas wells to rise rapidly, severely reducing the efficiency of horizontal wells, and...

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Problems solved by technology

The experimental results do not match the reality;

[0006] (2) For the production section of a horizontal well with a long well section, the sand production and water production profiles have obvious heterogeneity, and it is difficult to simulate this heterogeneity with the previous experimental equipment;

The existing experimental system cannot simulate the dynamic evolution of this sand-water production profile;

[0008] (4) The existing experimental devices for sand control and water control in horizontal wells have single functions, and can only complete individual engineering phenomenon or operation process simulation experiments of local small-scale reservoirs, such as local water production, local sand production, sand control filling operation simulation, etc.

There is still no set that can complete sand production, water production, sand and water co-production, water control screen test, internal circulation gravel packing operation, external extrusion gravel packing operation, A comprehensive open experimental system platform integrating functions such as comprehensive flow simulation of water and sand control wells

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