一种转化钻柱振动能量的井底高压喷射钻井装置

发布时间：2018-05-01 06:21

本文选题：钻柱振动能量 + 转化　；参考：《天然气工业》2017年09期

【摘要】：通过转化井下钻柱振动能量来增加井底钻井液喷射压力是提高钻井速度的重要途径,而现有技术还未能充分合理地利用钻柱振动能量。为此,基于井下钻柱振动能量的利用理论,提出了钻井液井下增压、增排量的井底高压喷射钻井理念,设计出了井底高压喷射钻井装置,并对其进行了数值仿真研究。结果表明:(1)井底高压喷射钻井装置可以将钻柱振动能量有效转化给井底钻井液从而实现井下高压喷射钻井;(2)井底高压喷射钻井装置增加了喷嘴钻井液过流流量,在?215.9 mm井眼中,其输出的钻井液流量可以提高5 L/s;(3)增大了钻井液喷射压力,喷嘴处钻井液脉冲压力最高达到11.3 MPa;(4)深井内井底高压喷射钻井装置应用效果比上部地层更加显著。结论认为,井底高压喷射钻井装置为高压喷射钻井技术的实现提供了一种新的手段,可以解决现有高压喷射钻井技术设备费用昂贵、安全性差、适用范围有限的问题。
[Abstract]:It is an important way to increase the drilling speed by using the vibration energy of the drill string to increase the drilling velocity of the well, and the existing technology can not make full use of the vibration energy of the drill string. For this reason, based on the utilization theory of the underground drilling string vibration energy, the concept of well bottom pressure and high displacement of well drilling fluid in well bottom is put forward. The high pressure jet drilling equipment was designed and the numerical simulation study was carried out. The results showed that: (1) the high pressure jet drilling device can effectively convert the vibration energy of the drill string to the bottom hole drilling fluid to achieve the downhole high-pressure jet drilling; (2) the high pressure jet drilling device at the bottom of the well has increased the flow flow of the nozzle drilling fluid, and 215. 9 mm well, the output of the drilling fluid flow can increase by 5 L/s; (3) the drilling fluid injection pressure is increased and the pulse pressure of the drilling fluid at the nozzle is up to 11.3 MPa. (4) the application effect of the high pressure jet drilling device in the deep well is more significant than that in the upper layer. It provides a new means to solve the problems of high cost, poor security and limited application scope of the existing high-pressure jet drilling equipment.

【作者单位】：中国石油大学(华东)石油工程学院;中国石化石油工程技术研究院;
【基金】：国家重点基础研究发展计划(973计划)项目(编号:2010CB226706) 中央高校基本科研业务费专项资金资助项目(编号:16CX02025A) 青岛市自主创新计划应用基础研究项目(编号:16-5-1-23-jch)
【分类号】：TE92

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