高温高压油基钻井液乳化稳定性评价装置与方法

龙怀远; 陈武; 刘罡; 王显光; 林永学; 张顺元; 王松

doi:10.12358/j.issn.1001-5620.2021.06.012

高温高压油基钻井液乳化稳定性评价装置与方法

doi: 10.12358/j.issn.1001-5620.2021.06.012

龙怀远^1,,
陈武¹,
刘罡¹,
王显光²,
林永学²,
张顺元³,
王松^1, ,

1.
长江大学化学与环境工程学院, 湖北荆州 434023
2.
中国石化石油工程技术研究院, 北京 100101
3.
中国石油集团公司工程技术研究院有限公司, 北京 102206

基金项目: 国家科技重大专项“海上油气田关键工程技术”（2016ZX05033）

详细信息

作者简介:
龙怀远，在读博士研究生，1992年生，从事钻井液完井液方面的研究。E-mail:332020105@qq.com

通讯作者:
王松，电话 13507219348；E-mail:1508871707@qq.com

中图分类号: TE254
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出版历程
- 收稿日期: 2021-07-22
- 刊出日期: 2021-11-30

Research on Evaluation Device and Method of Emulsification Stability of High Temperature and High Pressure Oil-based Drilling Fluid

1.
College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, Hubei 434023
2.
Sinopec Research institute of Petroleum Engineering, Beijing 100101
3.
China National Petroleum Corporation Engineering Technology Research Institute Co., Ltd., Beijing 102206

摘要

摘要: 高温高压油基钻井液乳化稳定性评价仪主要由高温高压不锈钢腔体、测试电极、温度控制系统、压力控制系统以及测试系统组成，高温电极选用PEEK材料，测试的电极距离设计为1.5 mm，电极的放电电压最高设计为2000 V，温度控制系统以T89C51 单片机为核心，采用铸铝电加热器包裹在高温高压不锈钢腔体外部进行加热，压力控制系统采用液压方式加压。对仪器的稳定性进行了测试并与常温常压下电稳定性测试仪进行了对比，结果表明，该仪器可以实现高温高压油基钻井液乳化稳定性评价，并且测试数据稳定、可靠，测量误差不大于5%。研究了油基钻井液在高温高压下乳化稳定性的规律,当维持压力不变时，随着温度的升高，破乳电压值呈下降趋势；当温度低于120 ℃时，随着压力的升高，破乳电压值有所减小，当温度达到120 ℃以上时，破乳电压值基本不随压力的变化而发生改变。
- 油基钻井液 /
- 高温高压 /
- 破乳电压 /
- 评价装置 /
- 评价方法
Abstract: The high temperature and high pressure oil-based drilling fluid emulsion stability evaluation instrument is mainly composed of high temperature and high pressure stainless steel chamber, test electrode, temperature control system, pressure control system and test system. The high temperature electrode is made of PEEK material. The test electrode distance is designed to be 1.55 mm. The maximum discharge voltage is designed to be 2000 V, and the voltage change rate is 150±10V persecond. The temperature control system is based on the T89C51 single-chip microcomputer. The cast aluminum electric heater is used to wrap the outside of the test vessel for heating. The pressure control system uses hydraulic pressure. The stability test of the instrument and the comparison test with the electrical stability tester under normal temperature and pressure are carried out. The results show that the instrument can realize the evaluation of the emulsion stability of oil-based drilling fluid at high temperature and high pressure, and the test data is stable and reliable, with measurement errors ≤5%. The emulsification stability of oil-based drilling fluid under high temperature and high pressure conditions is studied. When the pressure is kept constant, the demulsification voltage decreases with the increase of temperature. When the temperature is below 120 ℃, the demulsification voltage decreases with the increase of pressure. When the temperature reaches above 120 ℃, the demulsification voltage does not change with the pressure.
- Oil-based drilling fluid /
- High temperature and pressure /
- Demulsification voltage /
- Evaluation device /
- Evaluation method

HTML全文

图 1 高温油基钻井液乳化稳定性测试仪器流程图

下载: 全尺寸图片幻灯片

图 2 不锈钢腔体与电极示意图

下载: 全尺寸图片幻灯片

图 3 不同样品液破乳电压 20 次重复测试结果

下载: 全尺寸图片幻灯片

图 4 温度对油水比80∶20乳状液乳化稳定性的影响

下载: 全尺寸图片幻灯片

图 5 压力对油水比80∶20乳状液乳化稳定性的影响

下载: 全尺寸图片幻灯片

表 1 新研制仪器与DWY-2型电稳定性测试仪对比

乳状液	DWY-2电稳定性测试仪破乳电压/V				高温高压乳化稳定性测试仪破乳电压/V
乳状液	第1次	第2次	第3次	平均值	第1次	第2次	第3次	平均值
1^#	259	258	265	261	270	266	255	263
2^#	511	510	517	513	515	512	507	511
3^#	911	898	870	893	899	874	918	898

下载: 导出CSV

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