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由于苏里格气田苏10区块单井产量低,井口压力为0.5~1.0 MPa,积液井占总井数的62%,导致地面管网普遍存在积液问题。为更加有效地携出集输管网积液,同时降低井口压力,提高单井采收率,需对目前集输模式进行优化设计。针对苏10区块集输模式存在的问题,针对性地开展了流量控制、降低压差工艺试验;同时根据目前集输模式的特点,提出阀室移动增压橇集输模式设计。计算结果表明,优化后的集输模式可以进一步降低井口压力(0.1~0.5 MPa),从而有助于单井井筒携液,提高单井采收率;同时可以有效地对管网进行携液,降低管网压差,提高输气效率,最终达到延长气井寿命,为气田稳产提供支撑的目的。
Due to the low single well production in Su 10 block of Sulige Gasfield, the wellhead pressure is 0.5-1.0 MPa and the accumulating wells account for 62% of the total wells, leading to the widespread problem of liquid accumulation in the surface pipe network. In order to carry the effluent of gathering pipe network more effectively, reduce wellhead pressure and improve single-well recovery rate, the current collection and transportation mode needs to be optimized. In view of the problems existing in the gathering and transportation mode of Su 10 block, the flow control and the pressure drop experiment were carried out in a targeted manner. At the same time, according to the characteristics of the current gathering and transportation mode, the design of the moving and pressurizing sled gathering mode of the valve chamber was proposed. The calculation results show that the optimized gathering and transportation mode can further reduce the well head pressure (0.1-0.5 MPa), which can help the single well to carry liquid and improve the single well recovery rate. Meanwhile, the pipe network can be effectively carried with liquid, Reduce pipe network pressure, improve gas transmission efficiency, and ultimately achieve the purpose of prolonging gas well life and providing stable support for gas fields.