Horizontal well sand-water synergistic production and control and production and completion multifunctional experimental system and its experimental method

Abstract

The invention discloses a horizontal well sand-water synergistic production and control and multi-functional experimental system for mining and well completion and an experimental method thereof. The experimental system includes a central control system, a liquid storage tank, a water pump, a reservoir simulation unit, a transparent Wellbore, sand-liquid separation sand collector and return pump, the experimental methods include horizontal well non-uniform water outlet profile and its dynamic evolution simulation experiment, horizontal well sand control and water control comprehensive flow simulation experiment of horizontal well, horizontal well sand-water synergistic production profile and Its dynamic evolution simulation experiment, horizontal well non-uniform sand production profile and its dynamic evolution simulation experiment, horizontal well circulating gravel filling sand control process simulation experiment and other experiments, through the invention to carry out a series of experiments, help to obtain more accurate mathematical simulation The calculation results have important scientific value and engineering guiding significance for improving the development effect of horizontal wells in oil and gas reservoirs, and also have important reference value for the development of horizontal wells in unconventional oil and gas and gas hydrate reservoirs.

Description

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

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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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