文章针对准噶尔盆地超高压井LT1井试油测试过程中存在的测试工具超压、管柱受力复杂及井控风险高等技术难题,开展了试油测试技术研究.通过管柱优化和工艺安全性评价,形成了适用于准噶尔盆地超高压井的试油测试技术.在盆地南缘LT1井应用"两阀一封"射孔测试联作技术,消减了超高压井试油测试工具超压、管柱安全系数低等风险,实测地层压力为155.42 MPa,创中石油集团地层测试最高地层压力纪录,该研究为超高压油气藏的试油测试配套工艺提供了技术借鉴.

高探1井位于准噶尔盆地南缘冲断带四棵树凹陷高泉东背斜上,是一口高温高压、高产风险探井,该井试油测试过程存在测试工具尺寸选择受限、测试管柱在极端工况下受力复杂、地面测试流程安全风险极高等难题.针对高探1井高温、超高压、超高产的工况特征及技术难点,优化采用"三阀一封"APR射孔—测试联作管柱及140 MPa超高压地面测试流程,使用闸阀远程开关控制系统,实现井下测试管柱及地面测试流程的施工安全,并试获日产原油1213 m3、日产气32.17×104 m3的成果,录取到完整的地层参数,该井测试技术对高温高压、高产井的试油具有一定的指导意义.

准噶尔盆地气井多是高压井,当井口温度较低时井筒内会生成天然气水合物,化学抑制剂的使用可缓解井口冰堵的危害.选择当前适合现场的甲醇、乙二醇和二甘醇三种热力学抑制剂为研究对象,进行抑制剂效果评价实验.实验结果表明,三种抑制剂都具有阻止水合物生成和延长水合物生成时间的功效.横向对比来看,二甘醇抑制效果最好,其次为乙二醇,较差的为甲醇,通过技术-经济-环境综合对比,认为乙二醇为最佳使用对象.同时评价了产量大小与腐蚀对现场生产过程的影响,并提出了建议.

密闭试/采油流程主要是针对塔河油田含有高危有毒有害气体而开发出来的一套防逸散地面计量装置。在新疆塔河油田高含硫化氢地区的油井勘探开发过程中，使用该套密闭流程生产可以最大限度减少H2 S及其它有毒有害气体在大气中的扩散，有效避免了H2 S对人员的伤害及对大气环境的污染，现已广泛运用于塔河油田，并取得了显著的经济效益和安全效益。

With pressure data of the pressure profile acquired with the modular formation dynamics tester tool(MDT), the oil, gas and water zones/layers can be identified in general. But there exists erroneous adjustment probability of reservoir fluid property, due to various influencing factors in the process of well testing. With the method of well test analysis, this paper determines whether the MDT measures the real formation pressure or not, and proposes the choice of accepting the data or rejecting them given by MDT. The field application indicates that this method can be used to get good results in field application.

For poor carrying fluid capacity,the common combined production strings with difference tubing diameter have affected severely the gas well production,in order to meet the requirement of tubing strength in ultra-deep well,the optimization design of combined production string with difference wall thickness was researched.The application results showed that the optimized combined production string could not only meet the requirement of landing depth,but also could improve carrying fluid capacity in less than 6000m ultra-deep well.The mathematical models on safety landing depth and real-time safety factor of combined production strings with difference wall thickness in ultra-deep well were derived,it provided the technical support and effective tools for combined production strings with difference wall thickness replacing the combined production strings with difference tubing diameter.