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| 超高压淹没射流井底流场特性模拟分析 | |
| 引用本文： | 董学成,熊继有,黄卿卿,廖刚,荣继光,许期聪,魏武.超高压淹没射流井底流场特性模拟分析[J].钻采工艺,2010,33(2):72-75. |
| 作者姓名： | 董学成 熊继有 黄卿卿 廖刚 荣继光 许期聪 魏武 |
| 作者单位： | 1. 油气藏地质及开发工程国家重点实验室·西南石油大学 2. 中国石油集团海洋工程有限公司 3. 川庆钻探工程公司钻采工艺技术研究院 |
| 基金项目： | 国家自然科学基金资助项目"西南油气深井物理法随钻防漏堵漏" |
| 摘 要： | 超高压淹没非自由射流井底流场特性研究是超高压喷射钻头设计的关键技术之一，是延长钻头寿命、提高钻井速度、实现优快钻井的保障。目前关于高低压喷嘴联合作用下的井底流场特性的研究还不完善，文章通过建立井底流场计算域，运用数值模拟手段，在K-ε两方程数学模型基础上计算封闭的N-ε方程，对Ф15．9mm三牙轮超高压淹没射流的井底流场进行模拟。随着超高压喷嘴侧倾角从10°减小到8°，超高压射流流体上扬趋势变缓；超高压射流井底流场高低压区分区明显。分析认为超高压喷嘴射流能量大部分集中在高压喷嘴直径范围内，高低压喷嘴射流之间的相互干扰不大；超高压喷嘴射流直射井底与井壁交界处产生的流场特性有利于钻屑的运移和井底的清洗，且其产生的扩径率符合工程要求；喷嘴直径、喷射压力、喷射角度、喷距等对井底流场特性有影响。此方法为延长钻头寿命、提高钻井速度、实现优快钻井提供了保障。 |
| 关 键 词： | 深井 超深井 超高压淹没射流 井底流场 数值模拟 |
STUDY OF CHARACTERISTIC OF DOWNHOLE FLOW FIELD UNDER THE ENVIRONMENT OF ULTRA-HIGH PRESSURE SUBMERGED JETTING |
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| DONG Xuecheng,XIONG Jiyou,HUANG Qingqing,LIAO Gang,RONG Jiguang,XU Qicong,WEI Wu.STUDY OF CHARACTERISTIC OF DOWNHOLE FLOW FIELD UNDER THE ENVIRONMENT OF ULTRA-HIGH PRESSURE SUBMERGED JETTING[J].Drilling & Production Technology,2010,33(2):72-75. | |
| Authors: | DONG Xuecheng XIONG Jiyou HUANG Qingqing LIAO Gang RONG Jiguang XU Qicong WEI Wu |
| Affiliation: | DONG Xuecheng1,XIONG Jiyou1,HUANG Qingqing2,LIAO Gang1,RONG Jiguang1,XU Qicong3 , WEI Wu3(1.State Key Laboratory of Oil , Gas Reservoir Geology , Exploitation,Southwest Petroleum University,2.CPOE,3.CCDC Drilling & Production Technology Research Institute) |
| Abstract: | The features of bottomhole flow field under the condition of the ultra-high pressure submerged jetting were analyzed by using numerical simulation.This method can resolve the problem of optimal design for the multiinjector.When the heeling angle of ultra-high pressure nozzle change from 10 to 8,uptrend of ultra-high pressure flow slow down;the high and low pressure area of downhole flow field show very clear.The analysis results showed that the energy of jetting mostly concentrate in the diameter's scope of... |
| Keywords: | PDC bit ultra-deep well ultra-high pressure submerged jetting bottomhole flow field numerical simulation |
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