洛带气田廖家场区块遂宁组气藏开发潜力评价及对策

廖家场区块位于洛带气田的北东部，主力气藏为遂宁组气藏，具有孔隙度低、渗透率低、非均质性强等特点，在开采过程中表现出了单井产量不均衡，气井产量和井口压力快速递减（90．7％的气井井口油压已经低于2．5MPa，77．8％的气井产量小于O．5×10^4m3／d），单井动态控制半径小（平均为203m），单井控制储量低（平均为0．15×10^8m，），地层压力不均衡下降，储量动用程度低等动态特征。为提高气井的贡献率，尽可能实现稳产，对现有生产井生产情况进行分析后，建议尽快在廖家场区块内改造一条低压输气管线或开展增压开采工作，解决管网压力波动对气井产量的影响。通过气藏潜力分析，建议在井间距较大的井区部署加密调整井，提高井间的储量动用程度：在地层能量相对较高的气藏东部区域部署扩边井，进一步探索气藏的分布范围，动用存在于气藏边部的部分低效储量。

Developing Potential Valuation and Countermeasure of Suining Formation in Liaojiachang Block of Luodai Gasfield

Liaojiachang block locates in the northeast of Luodai gas field.Its major gas reservoir is in Suin- ing formation that has the characteristics of low porosity and low permeability and strong heterogeneity.During the developing,it displays the dynamic features as follows ：gas production of single well is unbalanced,well- head pressure and production of gas well decrease quickly （tubing head pressure of 90.7% of the gas wells has been lower than 2.5MPa,and 77.8% of the gas well production is lower than 0.5×10^4m3/d）,control ra- dius （the average is 203m） and single well controlled reserves （the average is 0.15×10^8m3） are low,and for- mation pressure decrease unequally,and producing reserves of gas reservoir is small.In order to improve the contribution rate of the gas wells and realize stable production,the production of the present producers is analyzed.Reforming low-pressure pipeline or pressurization developing in the Liaojiachang block as soonas possible will make the effect of variation of pipe network pressure on gas well production weaken.After gas reservoir potential analysis,infill wells should be deployed in the well block with big inter well distance.Ex- tension producer should be deployed in the Distribution range of the gas reservoir will of the gas reservoir will be produced. east region of gas reservoir with relatively high formation energy. be probed further,and partial low-efficiency reserves at the side