PIPESIM的井下节流阀在沥青质沉积防治技术的应用  

Application of downhole chock based on PIPESIM in asphaltene deposition control technology

作　　者：熊瑞颖 郭继香[1] 童世俊 王俊芳[2] 罗强[2] 许雪蓉 XIONG Ruiying;GUO Jixiang;TONG Shijun;WANG Junfang;LUO Qiang;XU Xuerong(China University of Petroleum(Beijing),Research Institute of Unconventional Oil and Gas Science and Technology,Beijing 102249,China;PetroChina Tarim Oilfield Company,Korla Xinjiang 841000,China)

机构地区：[1]中国石油大学(北京),非常规油气科学技术研究院,北京102249 [2]中国石油天然气股份有限公司塔里木油田分公司,新疆库尔勒841000

出　　处：《石油化工应用》2022年第8期20-23,共4页Petrochemical Industry Application

基　　金：国家自然科学基金“高温高压油井沥青质析出规律及机理研究”,项目编号:52174047。

摘　　要：井下节流阀常用于防止天然气水合物的形成,但节流效应同时改变了流体的温度、压力,而温度压力的变化对沥青质沉积具有重要影响。为明晰节流阀对沥青质沉积的影响,本研究采用PIPESIM模拟了井下节流阀不同安装位置、油嘴尺寸对沥青质沉积的影响。结果表明,节流阀对油井具有保压作用,使得阀前压力增加1~2 MPa;当节流阀油嘴大于油管内径43.26%时,节流效应微弱;将节流阀安装在油井泡点压力之前,流体压力突降有利于规避泡点压力所带来的沥青质大量沉积堵塞油井的风险,同时提高原油流速1.4倍。Downhole chock are often used to prevent the formation of natural gas hydrate,but the throttling effect also changes the temperature and pressure of the fluid,and the change of temperature and pressure has an important influence on asphaltene deposition.In order to clarify the influence of chock valve on asphaltene deposition,PIPESIM was used to simulate the influence of different installation positions of chock valve and nozzle size on asphaltene deposition.The results show that the chock value has a pressure retaining effect on oil wells,which increases the pressure before the valve by 1~2 MPa.When the chock valve nozzle size is larger than 43.26%of the oil pipe diameter,the throttle effect is weak.Install the chock valve in oil well before the bubble pressure,the sudden drop of fluid pressure is beneficial to avoid the risk of a large amount of asphaltene deposition and blockage of oil well.At the same time,the flow rate of crude oil can be increased by 1.4 times.

关 键 词：井下节流阀 PIPESIM PVTSIM 泡点压力 沥青质沉积 

分 类 号：TE319[石油与天然气工程—油气田开发工程]