页岩气集输管网适应性评价分析

Analysis and Evaluation of Adaptability of Gathering Pipeline Network in Shale Gas Field

为了改变页岩气田生产初期和后期的流体压力、产量波动较大对集输管网生产过程中工况变化适应性较差的问题。基于长宁某区块页岩气田集输管网的运行现状和工况特点,针对管网布局、输送工艺和增压工艺三个方面,分别择优选取适应性评价指标进行适应性分析评价。结果表明:长宁区块页岩气田集输管网的总体可靠度较高,增压工艺处理规模较大但增压效率较低。在滚动式组合增压模式最大设计规模下,尽量提高增压比。评价结果旨在为长宁区块页岩气田集输管网安全、平稳运行提供技术支持。

To change the large fluctuation of fluid pressure and production in the early and late stages of shale gas field production, the problem of poor adaptability to changes in working conditions during the production process of the gathering and transportation pipeline network. Based on the operation status and working conditions of the gathering and transportation pipeline network in a shale gas field in a block in Changning, the three aspects of pipeline network layout, transportation technology, and pressure boosting technology were selected respectively to select the optimal evaluation indicators for adaptability analysis and evaluation. The results show that the overall reliability of the gathering and transportation pipeline network in the Changning block is high, and the pressurization process is large in scale but low in pressurization efficiency. Under the maximum design scale of the rolling combined supercharging mode, try to increase the supercharging ratio as much as possible. The evaluation results aim to provide technical support for the safe and sTable operation of the gathering and transportation pipeline network in the Changning block shale gas field.