论文部分内容阅读
利用全尺寸携屑模拟实验装置进行了携屑试验 ,得到了侧钻水平井井眼内岩屑的运移规律 ,指出了环空岩屑成床的临界环空返速为 0 .85～ 1 .2 m/ s,形成岩屑床的临界井斜角为 40°～ 60°。提出了衡量钻井液携屑能力的参数及指标 ,评判出钻井液携屑能力的参数临界值为 1 .5。推荐了现场施工的环空返速范围为 1 .2～ 2 .0 m/ s,钻井液性能参数设计应满足携屑能力参数≥ 1 .5为宜。大庆油田的施工实践 ,证明了文中结果的正确性。
Using the full-scale shaving debris simulation experiment device, a chip-carrying test was carried out, and the rule of debris flow in side-hole horizontal well was obtained. The critical annular air-return velocity of annular cuttings into bed was 0.85-1 .2 m / s, the critical well inclination angle for the formation of cuttings bed is 40 ° ~ 60 °. Proposed a measure of drilling fluid carrying capacity of the parameters and indicators, judged the drilling fluid carrying capacity of the critical value of 1.5. It is recommended that the annulus return velocity range of on-site construction should be 1.2-2.0 m / s. The performance parameter of drilling fluid should be designed to meet the requirement of carrying capacity of debris ≥1.5. The construction practice of Daqing Oilfield proves the correctness of the results in this paper.