高压页岩气井开发过程中,井底积液的产生会严重影响气井的正常生产,因此,需要对井底积液情况随时掌握,从而及时制定有效的排液措施,避免气井水淹。而传统的钢丝下挂电子压力计等监测方法存在施工工艺复杂、时效性差等诸多缺点,往往不能够满足气田开发对液面资料的需求。针对这一问题,引进高压气井液面监测仪对页岩气井进行液面监测。使用高压气井液面监测仪能够快速了解气井液面高度。通过对工区内气井进行液面测试,对测试过程中出现的问题进行分析、研究。针对液面不清晰等问题,调整液面仪液面增益、接箍增益等参数,优化施工工艺,使仪器适用于该区块井况,形成了平桥南区块液面测试的工艺技术。根据井况排除干扰因素,准确甄别真实液面位置,总结出了平桥南区块液面测试的分析方法,可以快速有效地获取单井动液面资料,对制定单井生产制度及区域开发方案有着重要的参考价值。

During the development of high-pressure shale wells, the formation of bottom hole liquid will seriously affect the normal production. Therefore, it is necessary to keep abreast of the bottom hole liquid at any time, so as to formulate effective drainage measures in time to avoid flooding of gas wells. Traditional monitoring methods such as electronic pressure instrument hung on steel wire have many disadvantages such as complex construction technology and poor timeliness, which are often unable to meet the demands of liquid level data for gas field development. In order to solve this problem, logging unit for liquid level of shale gas wells with high pressure is introduced to monitor the liquid level, by which the liquid level height can be quickly understood. Through the liquid level testing of gas wells in the work area, the problems in the testing process are analyzed and studied. For the uncertain liquid level and other problems, the parameters such as the gain of the liquid level and coupling and so on are adjusted and the construction technology is optimized to make the instrument suitable for the well condition of the block. So that the testing technology for liquid level of South block in Pingqiao is formed. According to the well condition, the interference factors can be eliminated and the real position of liquid level can be accurately identified, and the analysis method for liquid level testing of South Block in Pingqiao is summarized. As a result, the dynamic liquid level data of single well can be obtained quickly and effectively. This method has great reference value for the formulation of single well production system and regional development scheme.