A water-soluble gas reservoir development simulation experiment system and method
A simulation experiment and water-soluble gas technology, which is applied in the fields of mining fluid, earthwork drilling, wellbore/well components, etc., to achieve the effect of scientific simulation process and accurate simulation results
Active Publication Date: 2021-02-02
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology
[0003] At present, the experimental system for water-soluble gas only measures the solubility of natural gas in water at different pressures and temperatures, and no experimental system can truly simulate the development process of water-soluble gas under formation conditions
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Embodiment
[0069] Water-soluble gas development simulation experiment method, using the above-mentioned simulation system, the whole experiment is divided into five parts to complete: including the preparation before the experiment, the dissolution process of formation water and methane gas, the determination of the solubility of methane in gas-bearing formation water, and the gas-containing sand filling pipe. The formation water saturation process, the depressurization development simulation process of water-soluble gas, the specific steps are as follows:
[0070] 1. Preparation before experiment
[0071] 1. Mix the sand according to the ratio in Table 1 below, fill the sand into the sand filling pipe, compact it evenly and dry it to make a sand filling model with similar properties. Measure the permeability and porosity of the model in the sand pack. Gas permeability measurement method: inject N2 into the sand filling pipe model, measure the gas flow with a soap bubble flowmeter and a...
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The invention discloses a water-soluble gas reservoir development simulation experiment system and method: the simulation system is divided into four parts: formation water and methane dissolution system, methane solubility measurement system in gas-bearing formation water, water-soluble gas exploitation simulation experiment system and temperature control system ; Water-soluble gas development simulation experiment method, including five parts: including the preparation before the experiment, the dissolution process of formation water and methane gas, the determination of the solubility of methane in gas-bearing formation water, the water saturation process of sand-packed gas-bearing formation, the reduction of water-soluble gas Pressure development simulation process. The needle of the invention can truly simulate the development process of water-soluble gas under formation conditions, and creates good conditions for the development of water-soluble gas.
Description
technical field [0001] The invention belongs to the field of physical experiment equipment for oil and natural gas exploitation, and in particular relates to a water-soluble gas reservoir development simulation experiment system and method. Background technique [0002] Water-soluble natural gas belongs to unconventional energy, which is widely distributed in the world and has huge reserves. It is a very important potential natural gas resource that is much larger than the proven oil and natural gas resources in the world. As early as the middle of the 20th century, there were studies on water-soluble gas in foreign countries. Early scholars mainly carried out the exploration of measuring the solubility of hydrocarbon gases in water and their dissolution mechanism. Japan first formally proposed that water-soluble gas is a new unconventional natural gas. resource. At present, domestic scholars have done a lot of work on the solubility characteristics and dissolution mechanis...
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IPC IPC(8): E21B49/00
CPCE21B43/00E21B49/00
Inventor 孙致学徐杨姚军冯军邓清蔡明玉孙强吕抒桓张明明吕晓聪聂海峰孙继芹
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)