发明名称 |
Method for lost circulation reduction in drilling operations |
摘要 |
A method may include determining a first particle size distribution for particulate additives in a first wellbore fluid circulated through a wellbore through an earthen formation, and determining a second particle size distribution for drilled cuttings resulting from drilling of the wellbore. The first and second particle size distributions may then be compared to determine a third particle size distribution for the combined particulate additives and the drilled cuttings. A lost circulation material having a fourth particle size distribution may then be selected based on the third particle size distribution and the selected lost circulation material may be pumped into the wellbore. |
申请公布号 |
US9038718(B1) |
申请公布日期 |
2015.05.26 |
申请号 |
US201213646306 |
申请日期 |
2012.10.05 |
申请人 |
Schlumberger Technology Corporation |
发明人 |
Karimi Mojtaba |
分类号 |
E21B21/00;E21B33/138;C09K8/03 |
主分类号 |
E21B21/00 |
代理机构 |
Osha Liang LLP |
代理人 |
Osha Liang LLP |
主权项 |
1. A method, comprising:
determining a first particle size distribution for particulate additives in a first wellbore fluid circulated through a wellbore through an earthen formation; determining a second particle size distribution for drilled cuttings resulting from drilling of the wellbore; comparing the first and second particle size distributions to determine a third particle size distribution for the combined particulate additives and the drilled cuttings, wherein the comparing comprises overlaying plots of the first and second particle size distribution and determining a size range where there is a lower volume percentage of particles than surrounding size ranges in the first and second particle size distributions; selecting a lost circulation material having a fourth particle size distribution based on the third particle size distribution; and pumping the selected lost circulation material into the wellbore. |
地址 |
Sugar Land TX US |