发明名称 |
DOWNHOLE SELF-ISOLATING WELLBORE DRILLING SYSTEMS |
摘要 |
One example of a downhole self-isolating wellbore drilling system to pulverize formation cuttings includes a cutting grinder tool and an isolation tool. The cutting grinder tool can be attached to a drill string uphole relative to a drill bit attached to a downhole end of the drill string. The cutting grinder tool can receive and pulverize formation cuttings resulting from drilling a formation using the drill bit. The isolation tool can be attached to the drill string uphole relative to the cutting grinder tool. The isolation tool can control flow of the pulverized formation cuttings mixed with a drilling mud uphole through the drill string. |
申请公布号 |
US2017089148(A1) |
申请公布日期 |
2017.03.30 |
申请号 |
US201615379156 |
申请日期 |
2016.12.14 |
申请人 |
Saudi Arabian Oil Company |
发明人 |
Zhou Shaohua |
分类号 |
E21B12/00;E21B21/10;E21B21/08 |
主分类号 |
E21B12/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
Dhahran SA |