Research of Casing Pressure changes in factors in Engineers Killing;
工程师法压井套压变化的影响因素研究
Plugging and killing technologies are necessary for temporary plugging of the thief gas zone.
天东109高含硫天然气井喷漏同存,需要实施堵漏压井技术对气层漏失进行暂堵,但该井属高含硫大产量天然气井,既没有安全钻井液密度窗口,又不具备完井条件,情况复杂,为此研究了固井技术与完井工艺及应急预案,通过认真组织施工,取得了成功经验。
When underbalancedly drilling carbonate reservoirs with developed caves and fractures in Tahe Oilfield, there exist narrow mud density window, various supporting requirements for underbalanced drilling e quipment, uncertain underpressure, difficulties in controlling of bottom hole underpressure and killing well while displacemental leaking and forced well completion, etc.
塔河油田碳酸盐岩储层溶洞、裂隙发育,钻井液密度安全窗口小,欠平衡钻井工艺存在设备配套要求的多样性、欠压值设计难、井底负压控制难、置换性漏失时压井难和强行完井难等技术难点,根据置换性漏失、强行完井施工等要求对井口、井下设备在标准配置的基础上进行了调整,依据碳酸盐岩储层、探井施工的特点提出了循环渐进、灵活的欠压值控制方法,改进的反循环压井技术比平推压井方法减少了压井作业对储层带来的伤害,结合压力传播速度和立管压力值进行井底压力控制的方法提高了压力控制的精度。
When there isn t circulating passage for killing fluid in pipe string of well, method to squeeze well is usually used to killing well.
当井内管柱无压井液循环通道时,常用的压井方法就是挤压井。
Error analysis of stand-pipe pressure control and prediction of surface casing pressure for horizontal well killing process;
水平井压井立压控制误差分析与井口套压预测
Simulation computation of well killing with deepwater driller s method;
深水司钻法压井模拟计算
Calculation of safety pressure margins and circulation rate of well killing by deep water driller s method;
深水司钻压井法安全压力余量及循环流量计算
The kill fluids tend to leak and contaminate the formation in the low pressure wells while workover.
随着油气井开发进入中后期,地层压力下降,在低压油井的修井作业中压井液常常漏失污染储层。
This article introduces a novel low formation damage kill fluid LW.
采用粉状HPAM为增粘剂,以三价有机铬离子为交联剂,研制了一种新型低伤害LW压井液,该压井液运用弱交联原理配制而成,考查了LW压井液的腐蚀性、滤失量和抑制性。
A novel low formation damage preformed gel kill fluid was prepared with partially hydrolyzed polyacry-lamide(HPAM) ,crosslinker C -2,corrosion inhibitor CT2 - 15 and clay stabilizer WD - 1 as raw material, and its performances were evaluated.
以部分水解聚丙烯酰胺(HPAM)、交联剂C-2、缓蚀剂CT2-15、粘土稳定剂WD-1 等为原料,研制了一种低伤害预凝胶型压井液,并对其性能进行了评价。