In order to study the influence of natural fracture and artificial fracture on reservoir well pattern deployment and development, Chang 6 fractured reservoir in Tang 9 oilfield is taken as the research object, through core, microscopic slice and microseismic artificial fracture monitoring, the development characteristics of natural fractures and artificial fractures in the reservoir are studied, and the production conditions of horizontal wells and fractures in different directions are analyzed. It is found that the natural fractures in the core of Chang 6 reservoir in Tang 9 oilfield are well developed, the occurrence is mainly high-angle oblique fractures or vertical fractures, the fractures with dip angle more than 70 degrees account for the majority, the surface density of micro-fractures is generally 0.1–0.3 cm/cm², the average 0.2 cm/ strip cm² is about 108 m, which is much longer than the distribution length of natural fractures. The initial annual decline of the parallel fracture direction of the oil well is 28%, and the annual decline of the vertical fracture direction is 42%. It is considered that the development effect of the parallel fracture direction of the horizontal section is better, mainly because the horizontal section is in the process of fracturing production. The influence of fracture on production is much greater than that of the original fracture direction of the reservoir. This is different from the understanding of well pattern deployment in conventional fractured reservoirs, and the result has practical guiding significance for the development of similar reservoirs.

为研究天然裂缝和人工裂缝对油藏井网部署和开发的影响，以唐9油田长6裂缝性油藏为研究对象，通过岩心、显微切片和微震人工裂缝监测，了解油藏开发特征。研究了储层天然裂缝和人工裂缝，分析了水平井和不同方向裂缝的生产条件。发现唐 9 油田长 6 储层岩心天然裂缝发育，产状以大角度斜向裂缝或垂向裂缝为主，倾角大于 70 度的裂缝占多数，微裂缝面密度一般为0.1～0.3 cm/cm ²，平均0.2 cm/条cm ²约为108 m，远大于天然裂缝的分布长度。油井平行裂缝方向初始年递减量为28%，垂直裂缝方向年递减量为42%。认为水平段平行裂缝方向的开发效果较好，主要是水平段处于压裂生产过程中。裂缝对产量的影响远大于储层原始裂缝方向。这不同于对常规裂缝性油藏井网部署的认识，其结果对类似油藏的开发具有现实指导意义。