Research On Optimum Design Of Gas Lift Drainage

Denglouku gas reservoir of Changling gas field and Longshen gas field belong to deep low-pressure gas reservoir, and the gas well in production exhibit some characteristics "low gas production、high liquid production、liquid loading". Preferred column jacket、the foam drainage can not fully meet the needs of drainage, so it requires application of targeted and effective drainage measures to discharge the liquid loading to ensure that the gas well normally and stably product.Gas lift drainage which has a strong adaptability, is a common drainage method. It can be used not only in low-pressure gas to drain and product gas, but also in discontinued gas wells to recover the production. This article sets about knowing the multiphase flow of well bore and liquid loading, analyzes several flow pattern in the well bore, expounds the harm of liquid loading, contrasts the several methods to drain and gas product, and optimized the best method of drainage and gas production.This article takes the theory of gas lift drainage apart, and discourses the way、style and merits and faults of gas lift drainage. Then it sets about the principle and key of gas lift, emphatically expounds the content of the optimum design of gas lift drainage. It focuses on the fixing of the depth of the gas lift value and the fixing of depth of the gas injection point and the gas injection volume in two cases which is given production、wellhead pressure and given wellhead pressure and gas injection volume.