超高密度抗盐水泥浆体系的研究  

A ultra-high density salt torlerant cement slurry.

作　　者：林志辉[1] 王贵宏[1] 李志斌[1] 侯占东[1] 尹伟[1] 王瑞和[1] 

机构地区：[1]大港油田集团固井技术服务公司

出　　处：《钻井液与完井液》2005年第B05期59-62,123,共5页Drilling Fluid & Completion Fluid

摘　　要：针对西部地区高压油气层或老油区调整井固井作业时发生井喷、气窜的问题,研究出了超高密度抗盐水泥浆体系。该水泥浆体系由铁矿粉、降失水剂GJF-200L、分散剂FDN、缓凝剂GJR-200L、悬浮剂(微硅)配制而成。通过对超高密度抗盐水泥浆体系性能评价得知,该体系在淡水、10%NaCl盐水条件下,具有一定的抗压强度、良好的稳定性、较好的失水控制能力,稠化时间易调整。由现场模拟固井实验表明,该体系的流动度、初始稠度、可泵时间、稠化时间、失水量、析水量和抗压强度均满足了施工要求;密度为2.42g/cm2的水泥浆,当立罐压力为0.15-0.18MPa时可保证正常供灰,达到所需的密度;密度为2.60g/cm3的水泥浆,当立罐压力为0.18-0.20MPa时可保证正常供灰,达到所需的密度。该超高密度抗盐水泥浆体系可用于现场异常高压油气井固井施工的需要。In western areas, when cementing high-pressure oil/gas layers or adjustment wells in mature oilfield, well blowout or gas channeling often occur. In an effort to avoid these problems, a ultra-high density salt tolerant cement slurry system composed of ferrilite powder, fluid loss reducer CJF-200L, dispersant FDN, retarder CJR-200L and suspending agent(micro silicate) was developed. Evaluation on the slurry system showed that, when prepared with both clean water and 10% NaCl solution, the slurry has stable properties, good fluid loss control, easily adjustable thickening time, and the cement stone exhibits high compressive strength. Stimulating tests onsite brought excellent results, and requirements of flowability, initial consistency, bump time, thickening time, fluid loss, free water and compressive strength were all satisfied. For the slurry of 2. 42 g/cm3, tank pressure of 0. 15-0. 18 MPa is enough for regular supply to get the density required, and for the slurry of 2. 60 g/cm3, the needed tank pressure is 0. 15-0. 18 MPa. All the data indicated the ultra-high density salt tolerant cement slurry is suitable for ultra-high pressure oil/gas wells cementing operation.

关 键 词：水泥浆体系 超高密度 抗盐 抗压强度 稠化时间 高压油气井 固井作业 西部地区 降失水剂 性能评价 NaCl 控制能力 施工要求 固井施工 调整井 老油区 油气层 铁矿粉 FDN 分散剂 缓凝剂 悬浮剂 稳定性 场模拟 流动度 失水量 

分 类 号：TE256.6[石油与天然气工程—油气井工程] TP333[自动化与计算机技术—计算机系统结构]