川东北含硫气井测试流程中的水合物预测及防治

Hydrate Prediction and Prevention about the Northeastern Sichuan Sour Gas Wells in the Testing Process

川东北含硫气藏勘探开发过程中,测试过程中水合物形成预测与防治的问题是目前急需解决的问题。通过与现场实践相结合,采用容易计算机编程且可靠性较高的分子热力学模型法进行计算分析,得到了压力、组分等对水合物温度的影响关系,尤其是硫化氢的存在对天然气水合物形成的影响,为含硫气藏水合物的防治提供了借鉴。结合河坝1井的实际情况,进行水套炉型号的优选。实践证明,利用该方法预测的水合物生成温度及预防方法准确、可靠。

In the northeastern Sichuan sulfur gas exploration development process,the testing process hydrate formation prediction and prevention is urgently needed to resolve the problem.Combined with field practice,easy computer programming and reliability of high molecular thermodynamic model method to calculate and analyze,pressure,composition,etc.hydrate temperature,especially in the presence of hydrogen sulfide gas hydrate the impact formed to provide for the prevention and treatment of sour gas reservoir hydrate reference.Combining with actual situation of Heba1 well,water jacket furnace models preferred.Practice has proved that the proposed method to predict the hydrate formation temperature and prevention method is accurate and reliable.