斜置锚爪式水力锚研制与应用

Development and Application of Oblique-Billed Hydraulic Anchor

斜置锚爪式水力锚用于完井管柱的锚定,减少油管伸缩。该新型水力锚锚爪腔轴线与锚体轴线呈一定角度,在提供足够的锚定力基础上,上提管柱时可沿锚爪轴线产生分解力,确保锚爪复位,地面试验表明解卡力降低15%。另外,该装置增加内管设计,避免大量产出液进入锚爪腔内而结垢。现场应用78井次,平均泵效提高13.1%,锚爪复位成功率达100%,没有出现因锚爪复位困难、报大修的事故,较好地解决了常规水力锚易结垢、卡管柱的问题。斜置锚爪式水力锚在分注、压裂等方面也有较好的应用前景。

Stroke loss of deep sults in pump efficiency decreasing g wells will increase because of oil pipe elongation, which re- Oblique billed hydraulic anchor is developed to anchor the well completion pipe string and reduce the telescopic tubing. There is a certain angl cavity axis and the anchor fluke. The new type hydraulic anchor can provide eno force. At the same column is lifted. T time, resolution power he ground experiments is produced have shown addition,the device is designed to avoid large amounts of cavity. The t 13.1%. And bill problems of scal chor has a good along the axis of the fluke that releasing force of produced fluids echnique is applied in 78 wells. The average reduction success rate is up to 100%. Bill rese ing and string in general hydraulic anchor are so application prospect in injection and fracturing e between axis ugh anchoring when the pipe can be reduced 1 entering the bill pump effic t problems lency is lncrea does lved. （）blique-billed 5%. In scaling sed by t appear. The hydraulic an