This paper selects cargo throughput in Liaoning's coastal ports as indicator of port development, and regional GDP and comprehensive employment as regional economy indictor to establish a vector auto regression (VAR) model taking port development as independent variable and regional economy as dependent variable, and uses Granger causality test and Impulse analysis to study their interaction between two variables. Results show a continuously stable balance between ports and economic growth, with port throughput as Granger genesis of regional GDP and comprehensive employment, meaning port throughput as a leading indicator for economic growth. Port throughput keeps same pace with growing economy so that coastal ports are becoming a substantial basis for hinterland economy. This paper presents suggestions on intensifying infrastructural construction, expanding port industrial size, consolidating port resources, optimizing commercial environment, adjusting Liaoning's industrial structure, advancing industrial transformation, and materializing sustainable development of economy to ensure a sound interaction between ports and cities in Liaoning province.

This paper, by means of XRD and TEM, conducts tests in velocity sensitivity, water sensibility and pressure sensibility of the major CBM reservoirs in Dafosi well field according to industrial code SY/T 5358-2010, aiming at reducing damages to reservoirs during CBM development and reaching an efficient development. A moderate damage to velocity sensibility comes from coal powder motion. A big damage to water sensibility is derived from kaolin, which disperses and migrates in the water, and blocks pore throats. Also there is a big damage to pressure sensibility by surrounding pressure; permeability is impossible to recover even if the surrounding pressure is restored. This paper suggests controlling liquid level reduction intensity and liquid quantity, reducing velocity sensibility, decreasing damage to pressure sensibility near wellbore zone, avoiding damage to water sensibility by using drilling liquid and fracturing liquid close to the original coal water mineralization degree.