第46卷
第3期
石油与天然气化工
CHEMICAL ENGINEERING OF OIL &GAS
高温高压气田处理厂堵塞物实验分析及对策
张利明图孟格勒肖克熊伟中国石油塔里术油田公司质量检测中心
摘要在试投产过程中，我国西部某高温高压气田天然气处理厂低温分离器形成大量固体堵塞物，造成处理装置卡堵。通过化验分析发现，图相况积物质组分主要为Ci2～Cu；当装置运行压力为 6.85MPa、温度降至一9.5℃时，直接在气相中析出固体结晶，堵塞低温分离器。现场试验结果表明，适当提高低温分高器操作温度，可在一定程度上减少固相沉积物的形成，但仍不能完全解决固相沉积物的堵塞问题。结合注入轻烃的方法，可有效清除固相况积。
关键词固相沉积全组分集气低温分离
中图分类号：TE868
文献标志码：A
D0l;10.3969/j.issn.1007-3426.2017.03.003
Experimentalanalysisand countermeasuresof blockageintheprocessing
plant of hightemperatureand highpressurenatural gas field
Zhang Liming, Tumeng Gele, Xiao Ke, Xiong Wei
Quality Inspection Center of PetroChina Tarim Oilfield Company,Korla,Xinjiang,China
Abstract: During the process of trial operation, a large number of solid blockages were formed in thelow temperature separator of the natural gas processing plant of a hightemperature and high pressure gas field in West China, which caused the blocking of the processing device. Based on the analysis, it was concluded that the major components of solid phase deposition materials were Ci2 Cu4. When the operating pressure of the device was 6. 85 MPa, the temperature of the device was reduced to 9. 5 C, the solid crystal was directly precipitated in the gas phase, and the low temperature separator was blocked, The results of field test showed that the temperature of the low temperature separator could be increased appropriately to reduce the formation of solid phase deposition materials to a certain extent, but still couldn't solve the blockage problem of solid phase deposition completely. Combined with the injection of light hydrocarbons, the solid phase deposition could be effectively removed.
Key words: solid phase deposition, total component, gas collecting, low temperature separation
我国西部某高温高压气田是塔里木油田产能建设的重点区块，该气田天然气处理厂设计处理能力为60 X10*m"/a，工艺流程见图1。在试投产过程中，低温分离器形成大量固体堵塞物，造成处理装置卡堵，地面集输系统无法正常运行。对该气田的生产造成很大的
影响，也带来了一定的安全隐患。
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由于设备精度限制，普通气体色谱仪只能检测至 C，对气体中含量较少的重质组分无法检测，重质组分通常采用油色谱进行检测。由于该气田气体中含有少量重质组分，导致在低温分离器中气体直接析出固
作者简介：张利明（1987一），男，安徽毫州人，毕业于西南石油大学油气田开发专业，现为质量检测中心工程师，主要从事油气截流体相态实验及理论研究、质量检验等方面的研究。E-mail;zhlmin-tlm@petrochina,com.cn
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