长北区块气田生产中发现部分水平井在产能高于临界携液产量时,因管网压力波动时常出现生产不稳定、产量急剧下降的现象.长北区块通过室内实验确定水平井临界携液产量公式,修正后Belfroid模型比较符合长北水平井的积液特征,水平井在倾斜段井斜角55°时所需携液产量最高.研究表明,这类水平井生产不稳定与近井筒地带地层压力低、水平段起伏不平、目前产量低3个因素有关,针对3个影响因素提出关井恢复地层能量和移动计量撬放空排液两种恢复产量的技术对策,在现场应用中取得良好效果,并明确两个对策的不同应用环境.

Sulige gas field in Eastern,seismic exploration and development of advanced military as a whole.In this paper,collected in the field from high-precision two-dimensional seismic methods,through an ongoing analysis of the last three years and demonstration projects to ensure quality control in the premise,to be a Sulige field collection methods,especially for low deceleration layer thick region of the near-surface structure of a more detailed investigation,in order to ensure data quality and provide a guarantee,but also for the Eastern District of wells Sulige gas field deployment and adjustment of a relatively reliable basis.

Based on the foundation design of the North Nanjing sewerage farm, the pile-raft foundation's transform,the distribution of soil pressure under the raft and pile load are measured during the water loading test.The sharing in upper loading of piles and raft is analyzed,and also the measuring method is discussed.The mechanism and changing disciplinarian of pile-raft foundation and ground's cooperation under real conditions are introduced and discussed.The test results indicate that the raft post-casting belt has less influence on the raft's settlements.Adjusting piles' length when the piles' diameters are all the same can optimize the bearing capacity of pile.Under the condition that one pond is being pouring in and the neighboring pond is being pumping out,the piles' reaction of the neighboring pond can reach the maximum.The sharing percent of raft is about 9%(pond full) and 11.3%(pond empty) under the condition that the ratio s/d of space between piles and pile's diameter is about 3.8～4.5.The test results indicate that the measured settlement and non-uniform settlement are far below the designed value and the admitted value.The ratio s/d can get 5～6 in the future that the sharing percent of raft will get 15%～20%,which can get remarkable benefit.

This paper introduces the bearing mechanism and design method of CFG pile strengthen soft sab soil,through inspection and survey of soil between piles and analysis of ultimate bearing capacity test results of CFG pile composite foundation,coefficient of increased bearing power of soil between piles,rate of utility and coefficient of factor of safety are suggested.

Due to the special structure design for long-span and different-height prestressed roof of pump room,two methods including prestressed truss and prestressed long-span beam are presented in this paper.Through the calculation and structure analysis of 3D finite element analysis software,the paper chooses a safe、economical and suitable method for the roof structure,which is carried out on the pump roof and succeeds.