井下关井测压技术在特低渗透油田开发中的应用Application of Downhole Shut-in Pressure Measuring Technique in Ultra-low Permeable Oil Field Development
贺治勇
HE Zhi-yong ( Development Department of Changqing Oil Field Company
摘要(Abstract):
鄂尔多斯盆地三叠系油藏多属岩性油藏,受储层物性和含油性的影响,具有“低渗、低压、低产”的特点。由于产量较低,常规的起泵测静压点、环空恢复和起泵测压力恢复等压力监测手段测试工艺均有一定的局限性,井筒储集效应对测试结果的影响较大。井下关井测压新技术可大大减小井筒储集效应的影响,缩短测试周期,提高试井效率和油田开发的经济效益,适合三叠系特低渗透油藏开发试井的需要。
Most Triassic reservoirs in Ordos Basin are li-thologic reservoirs. Affected by reservoir property and oil bearing property, they have characteristics of " low permeability, low pressure and low production". Conventional testing techniques such as starting pump for measuring static pressure point, annular build-up and starting pump for measuring pressure build-up have certain limits. Downhole shut-in pressure measuring technique can reduce effect of bore hole storage effect, shorten testing cycle , and improve well testing efficiency and oil field development benefit, so as to meet the demand of well testing of Triassic ultra-low permeable reservoirs development.
关键词(KeyWords):
特低渗油田;井下关井;井筒储集效应;续流;测试周期
ultra-low permeable oil field; downhole shut-in; bore hole storage effect; after flow; testing cycle
基金项目(Foundation):
作者(Author):
贺治勇
HE Zhi-yong ( Development Department of Changqing Oil Field Company
- 特低渗油田
- 井下关井
- 井筒储集效应
- 续流
- 测试周期
ultra-low permeable oil field - downhole shut-in
- bore hole storage effect
- after flow
- testing cycle