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当前,随着储层压裂改造及水平井技术的广泛应用,苏里格气田进入相当规模的开发阶段,气井年产量不断上升,已成为长庆地区开发生产规模最大的气田。随着生产的进行,地层压力逐渐枯竭,从而造成井筒内气体的携液能力也跟着降低,最终会使井内液体回落,形成气井积液。目前由于水平井基数大,气井积液已成为影响产能的主要因素,要想维持气田的高产,气井积液已成为苏里格地区首要面临的技术难题。
Currently, with the extensive application of fracturing in fracturing and horizontal well technology, the Sulige gas field has entered a considerable scale of development and annual gas production has been on the rise. It has become the largest gas field under development and production in Changqing. As production progresses, the formation pressure gradually depletes, resulting in a decrease in the liquid carrying capacity of the gas in the wellbore, eventually causing the liquid in the well to fall back to form gas well liquid. At present, due to the large horizontal well base, gas well effusion has become a major factor affecting production capacity, in order to maintain the high yield of the gas field, gas well effusion has become the primary Sulige region to face the technical problems.