Abstract: For the first phase of this journal, the technology events "Luojiazhai" is highlighted as the theme to reveal the scientific research progress of exploration and development of the structure of Luojiazhai to the readers. While the focus of the current period is to show readers the study status quo of the academic direction in gas development and gas injection in our school.
The research team for this academic direction in natural gas development and gas injection in our school is one of the important compositions of the State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, offering the important academic and technologic support for "China - Canada Natural Gas exploratory development technique training Center" and Key Laboratory of China Petroleum Corporation "Hydrocarbon Accumulation and Development". The Special Report of this period "Characterized by Natural Gas, Targeted by Improving Oil and Gas Recovery, Serve the Petroleum Industry" is completed by Committee of Edition, which presents sides such as "academic idea, research feature, main research aspects, main contents and results" of this team to the reader detailedly.
As a domestic well-known specialist in the development of gas field and gas condensate field, Professor Li Shi-lun has been committed to the research on new methods and new technology for complex gas field development. "New Way to Improve Gas Well Production and Condensate Gas Field’s Recovery Factor" is the new crystal of his academic idea. Any benefit for your academic research or production practice is our great wish.
China’s gas industry has made rapid progress. West to east project not only drives the development of every walk of life but also transforms people’s cognition and usage of clean energy sources profoundly. The discovery of CO2 in Songliao Basin and Yinggehai Basin ensured the resource for the gas injection development of oilfield with low permeability. The specially inviting column of current period mainly discussed the academic and technical problems in gas field development and gas injection, which has great instructional sense for the research in natural gas engineering and its correlated fields.
"The relation of base-level cycle sequence to reseroir division" is completed by Professor Chen jing-shan et al. With consideration of contradiction between the classification scheme of individual strata based on sequence boundaries of base-level cycle and the four-grade traditional reservoir division scheme,it is suggested that four-grade division scheme of sandbodies and reservoirs is bounded by muddy cap and barrier beds deposited during various grade flooding, and strides across sequence boundary. It’s innovative and operable in application.
"Formation Water Vaporization and Salt Out at Near Well Bore Zone in High Temperature" is composed by Tang Yong et al. A gas-liquid-gas phase equilibrium theoretical caculation model suitable for hydrocarbon mixtures contained polar material water and a functional relation between formation water evaporation, water saturation at near well bore zone and salinity are set up. They suggest that the potential formation damage caused by salting out should be considered during the depressurizing recovery of gas reservoir with high temperature, high formation water salinity and low water saturation.
"The Formation Mechanism of Coalbed Methane Reservoir in the South Qinshui Basin" is completed by SHI Shu-can et al.The paper shows the characteristic of the coalbed reservior of the South Qinshui Basin that the coalbed methane generated from the Upper Paleozoic coal seams during the Indosinian and Yanshanian Orogenics is reformed to the current coalbed methane reservior in the Himalayan Orogeny. The paper also shows the gas accumulation problems.
As the upper talent in Petrolem Engineering in our school, the young Professor Lin Yuanhua wrote "A New Equation for Calculating Expansion Force of Expandable Casing" for current period. The theoritical model for expansion force of expandable casing makes significant reference sense for drilling engineering and its correlated actual problems.
Professor Li Chuanliang is a low-pitched and domestic person in life but totally diffirent from others in science and technique. The inquiry spirit of suspicion and getting to the bottom of the question not only benefits students in teaching but also makes him breach in scientific research frequently. "Misunderstanding the Performance of Abnormal Pressure Gas Reservoir" is the second discussing and argumentative thesis in this journal and it deserves the commendation.
Besides, the amount of the publication in this journal is increased largely to answerback the passion and concern from both author and reader.
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