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礁滩型碳酸盐岩气藏不同于常规碎屑岩气藏,该类气藏的有效开发面临很大问题。龙岗气田是典型的礁滩型碳酸盐岩气藏,地质研究和试采动态特征研究表明气藏储层存在强烈的非均质性,气水关系复杂,部分试采井受地层水影响严重,同时不同类型气井生产特征表现出极大差异。该气藏有效开发主要面临储层非均质性评价、流体分布复杂性描述、储量计算以及产能评价等问题。针对该气藏开发面临的问题以及气藏开发特征,提出4条开发技术对策:①井—震联合开展储层精细描述,提高气藏开发规模;②布井方式采用不规则井网,提高气藏开发效益;③加强动态监测,科学管理气藏,提高气藏管理水平;④坚持“边勘探、边滚动、边建产”的开发思路,降低气藏开发风险。气藏开发技术对策的制定为龙岗气藏有效开发提供指导。
Reef beach carbonate reservoirs are different from the conventional clastic rock reservoirs, and the effective development of such reservoirs faces great problems. The Longgang gas field is a typical reef-shoal type carbonate gas reservoir. Studies on the geological and dynamic characteristics of the test-production show that there is a strong heterogeneity in gas reservoirs, and the gas-water relationship is complex. Some of the test wells are seriously affected by formation water , While the production characteristics of different types of gas wells show great differences. The effective development of the reservoir mainly faces the problems of reservoir heterogeneity evaluation, fluid distribution complexity description, reserve calculation and capacity evaluation. According to the problems of gas reservoir development and the characteristics of gas reservoir development, four development strategies are put forward: (1) well-seismic joint reservoir description is carried out to improve the development scale of gas reservoirs; (2) the well-drilling method uses irregular well pattern to enhance gas Hiding development benefits; ③ strengthening dynamic monitoring and scientific management of gas reservoirs to improve gas reservoir management; ④ adhere to the “exploration while edge, while rolling, while building production,” the development of ideas to reduce gas development risks. The development of gas reservoir development technology countermeasures provide guidance for the effective development of Longgang gas reservoir.