低温轨道钻机固控系统的研制

根据低温钻机对配套设备性能的要求,研制了适合俄罗斯7 000 m低温轨道钻机配套的低温固控系统。该固控系统采用多层模块结构,在空间上分为上、中、下3层,依次为顶棚、中间层、钻井液罐。下层钻井液罐底座带有与地面轨道配套的高强度合金钢滚轮,可以实现系统整体移动,工作时通过锁紧机构连接成一个整体,并实现空间内部温度不低于10℃。系统对钻井液采用5级净化处理,能在-45～50℃环境下对钻井液进行配置、贮存、循环和净化等,且保证在-60℃环境下能无损储存。试验及应用情况表明,该固控系统能够满足丛式井作业快速移动和7 000 m低温轨道钻机的配套需要。

Development of the Solid Control System for Low Temperature Rail Rig

According to the matching equipment performance required by low temperature drilling rig,the supporting low temperature solid control system for the 7 000 m low temperature rail rig was developed.It is suitable for the low temperature environment in Russia.The system adopts a multi-layer modular structure which contains the upper,middle and lower layers in space,namely ceiling,interlayer and mud tank.The tank base has a high-strength alloy steel roller matching the ground rail.It can achieve the movement of the whole system.It can form a whole space through the locking mechanism in operation and it can reach a temperature of no less than 10 ℃ within the space.The system can perform a five-stage purification of drilling fluid.It can carry out the preparation,storage,circulation and purification of the mud in the environment of-45~50 ℃.Moreover,no-damage storage can be ensured in the environment of-60 ℃.The test and application show that the solid control system can meet the needs of quick motion of cluster well operation and 7 000 m low temperature rail rig.