间歇式防断裂旋转油井管间歇式防断裂旋转油井管.doc

间歇式防断裂旋转油井管 根据各井井斜情况、拐点位置等对油井管串参数进行优化，并引用了自动间歇式旋转抽油杆悬绳器、防止油管偏磨的旋转式采油井口，液压油管锚锚定器等措施，取得了一定的效果。根据井况在部分油水井分别试用cmb-114超越式油管锚锚定器、自动间歇式旋转抽油杆悬绳器，形成了由自动间歇式旋转悬绳器+旋转井口+油管旋转锚定器+抽油杆扶正器四部分组成的综合防治体系。从现场情况统计，油管丝扣的损坏普遍存在，油管断裂、漏失主要是从丝扣部分发生的。 According to the location of the well deviation, a turning point in the well pipe string parameters were optimized, and refer to the automatic intermittent rotary sucker rod beam hanger and rotary oil extraction wellhead to prevent the eccentric wear of tubing, hydraulic tubing anchor anchoring, obtained the certain effect. According to well conditions in some parts of the oil and water Wells, respectively, the trial beyond the CMB - 114 type tubing anchor anchoring device, automatic intermittent rotary sucker rod beam hanger, formed by the automatic intermittent rotating beam hanger + rotary wellhead + + rotary tubing anchor device sucker rod centralizer comprehensive prevention and control system composed of four parts. Statistics from the spot, tubing thread damage exists generally, tubing rupture, leakage, mainly from the threaded part. （1）斜扣硬上致使油管丝扣损伤;（2）由于击打、碰撞、咬伤使油管损伤;（3）油管断裂损伤;（4）滑道滑滑油管;（5）火烧油管。 Button (1) the oblique hard led tubing thread damage; (2) because of the strike, collision, bite injury of tubing; (3) tubing fracture damage; (4) slip slippery tubing; (5) fire to tubing.  从理论上讲，注水的最佳 ph值应为 7。一般情况下，当 ph 值在 4 -10时，腐蚀过程主要受氧扩散过程控制，腐蚀速率不受ph值影响。在ph值不大于4 的酸性范围内，碳钢表面的氧化物覆盖膜将完全溶解，致使钢铁表面和酸性介质直接接触。因此，提高注水ph值，可以解决酸蚀问题，但不一定能解决其它腐蚀类型。当 ph 值在 10-13 的碱性范围内时，随碳钢表面的ph值升高， fe2o3覆盖膜逐渐转化为具有钝化性能的 r - fe2o3 保护膜，腐蚀速率会有所下降。但是当 ph值过高时，腐蚀速率又会上升，其原因是碳钢表面的钝化膜溶解成可溶性的铁酸钠 (nafeo2 )。 Theoretically, the best ph water injection should be 7. Usually, when the ph value in the 4-10, the corrosion process is mainly controlled by oxygen diffusion process, the corrosion rate is not affected by ph. In acidic ph value is not greater than 4 within the scope of carbon steel covered on the surface of the oxide film dissolve completely, making direct contact w