发明授权
- 专利标题： Reservoir protecting agent composition and broad-spectrum drilling liquid and use thereof
- 专利标题（中）： 储层保护剂组合物和广谱钻井液及其用途
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申请号： US14861898申请日： 2015-09-22
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公开(公告)号： US09279076B1公开(公告)日： 2016-03-08
- 发明人: Guancheng Jiang , Yang Xuan , Xi Wang , Shuo Zhang , Yuxiu An , Jinsheng Sun
- 申请人： China University of Petroleum (Beijing)
- 申请人地址： CN
- 专利权人： China University of Petroleum (Beijing)
- 当前专利权人： China University of Petroleum (Beijing)
- 当前专利权人地址： CN
- 代理机构： Calfee, Halter & Griswold LLP
- 优先权： CN201510072867 20150211
- 主分类号： C09K8/12
- IPC分类号： C09K8/12 ; C09K8/03 ; E21B3/00
摘要：
The present subject matter relates to a reservoir protecting agent composition, consisting of non-fluorescent sulfonated asphalt, micron-sized cellulose, and a reservoir protecting agent, wherein, the reservoir protecting agent is composed of structural units denoted by the following formula (1), formula (2), and formula (3). The present subject matter further provides a broad-spectrum drilling fluid that contains the reservoir protecting agent composition. The present subject matter further provides a use of the broad-spectrum drilling fluid in oil and gas well drilling. When the broad-spectrum drilling fluid provided in the present subject matter is used in oil and gas well drilling in reservoirs with different structures, it exhibits good rheology property, temperature tolerance, and anti-collapse and protection performance.