Study on underground gas storage rebuilt from Bannan condensate gas reservoir
Accompany with the rapid development of the economy in our country, theproportion of energy consumption of natural gas is becoming lager and lager.But contrary to this optimistical phenomenon, the question which is thecontradiction between supply and demand is becoming aculeate increasingly.Now the effective way to resolve this question is to build a gas storage near theterminal consumer. Bannan gas storage is a solution to the natural gascontradiction in Beijing and Tianjin. In order to analyze the feasibility of Bannangas storage, describe the running indexes quantitative, some aspects havedone detail study which is based on the theoretical basis of dynamic and staticcombination, such as the stratigraphic sequence, microfacies, reservoirproperty, 3D geological model, running mechanism and program designingand so on. This research affords a practicable program to the rebuilding ofBannan gas storage.
1) This study carries out the high resolution sequence stratigraphyresearch, divides BinⅣ oil formation int0 6 layers, carries on the stratigraphiccorrelation to the short-term cycle, and establishes high resolution sequencestratum of the research area.
2) Based on the Observation and description of B884 cores, it isdetermined that the sedimentary system in the study area is beach-bar, andbase on the analysis's foundation of body type and the facies model, thedistribution of plane and vertical distribution is studied in detail,
3) The reservoir heterogeneity of plane, interlayer and intraformational isstudied, and establishes research division standard, analyze identification signof intercalation contributing factors in the objective interval, and study thedistribution characteristic; Combines with the flow characteristic, this researchdivides this reservoir into four kinds of flow units, studies interior distributedrule, and synthesizes the reservoir various aspects characteristic research toselect the appropriate body position for the gas storage construction.
4)Combined with the detailed geological research achievement, this studyestablishes three dimensional fine geological model of Bannan gasstorage(structure model, microfacies model, porosity model, permeabilitymodel), fits the reserves, and calculates effective porosity volume of water andgas sand body in the initial condition.
5) The composition experiment is simulated, such as the CCE and theCVD and so on, and the composition data is restored to initial state. Combiningdevelopment dynamic model, has carried on the fitting to the production historyof gas reservoir, in this basis, analyzes the saturation distribution characteristic,calculates residual gas volume, the gas leakage volume and the water bodyinvasion volume.
6) In the foundation of production history fitting, this article does a detailedstudy on the movement mechanism, analyzes the influence water body size,the capacity of injection and production, the recovery ratio of condensate oil,etc. on gas storage storehouse movement, establishes operational factorfoundation of the gas storage; Finally, analysis the supply and demandrelationship of natural gas, designs three program, according to the forecastingresults, the appropriate scheme is selected and can provide the theory and thetechnical guidance for the gas storage.
凝析气藏;地下储气库;数值模拟;运行机理
中国海洋大学
博士
Marine Geophysics
Prof.Zhang Jinliang
2011
TE972.2
173
2011-10-31（万方平台首次上网日期，不代表论文的发表时间）