调整井压裂井间干扰实例分析及技术对策

Example analysis and technical measures for wells interference in adjustment well fracturing

滕小兰 邱玲

TENG Xiaolan QIU Ling

中石化西南油气分公司工程技术研究院，四川德阳　618000

Engineering Technology Research Institute of Southwest Company, SINOPEC, Deyang 618000, China

新场沙溪庙组气藏是西南油气田的主力气藏之一，目前已步入开发中后期产量递减阶段，为保持气藏稳产高产采取了加密调整井压裂增产措施。随着开发调整的进行，部分压裂井出现井间干扰、压后效果不佳的情况。针对这种情况，提出加密调整井压裂施工参数优化技术，对目标缝长、加砂规模、前置液比、平均砂比以及排量等进行优化，以保障加密井的压裂效果。在CX606等7口井中进行了应用，施工成功率100%，且均未出现井间干扰，增产效果较好，为新场沙溪庙气藏加密调整井的压裂开发提供了一种有效的技术手段。

The Shaximiao formation in Xinchang is one of the mian gas reservoirs in southwest oil gas field, which made a positive contribution to increase and to maintain yields of this field. At present, the gas reservoir has entered middle and later stage of field development, and well pattern infill or adjustment and fracturing stimulation have been took to maintain stable and high production. With the development of well pattern infill and adjustment, wells interference has became an increasing problem. Aiming at the high failure of fracturing stimulation, operation parameters optimization technology in infill and adjustment well has been explored to optimize the target half fracture length, gravel input scale, ahead fluid proportion, mean sand proportion, and delivery capacity and so on. During the fracturing operation in seven wells such as Well CX606, success rate can be up to 100%, with no well interference. The favorable production increasing has provided an effective technical measure for infill adjustment well fracturing in Shaximiao group Xinchang gas reservoir.