Underground gas storage is the best choice for natural resource reserve and peak value. Storage capacity of underground single well injection production are key indicators shaving capacity. This paper focuses on research expansion stimulation a basin in Western China. Firstly, based study two-phase seepage law water, numerical simulation model coupling high velocity non-Darcy effect gas-water t...

The effect of acidizing process on the stress corrosion cracking HP-13Cr stainless steel in ultra-depth well environment was studied by slow strain rate test, electrochemical measurement, microstructure observation, and finite element modeling. results indicated that significantly increased susceptibility induced fracture mode to brittle characteristic high temperature CO 2 pressure environment...

This paper aims to investigate the localized corrosion mechanism of Q125 casing steel in residual acid solution with Mannich base type inhibitors during oil reservoir acidizing process. The behavior fresh (20% HCl) and (pH 1.0 pH 3.0 without 3-(4-chlorophenylimino)-1-(piperidine-1-ylmethyl) indolin-2-one (Mannich type, Mb) inhibitor was studied by electrochemical test, weight loss, surface anal...

Matrix acidizing is a good stimulation process in which acid introduced into the reservoir near wellbore area via or coil tubing. In oil industry, formation damage prevalent problem. Bypassing by producing wormholes carbonate reservoirs main purpose of matrix formation. When doing lab tests, scientists are looking for wormhole-inducing injection rate that can be used field. Meantime ongoing wor...

The importance of the choice well exploitation methods is analyzed. Mechanical applicable in carbonate reservoirs are discussed. To maintain efficiency field development, it important to productivity wells at planned level throughout entire production period by increasing their productivity. Productivity increase, skin effect reduction achieved with help acid treatment, main principle which roc...