发明名称 |
METHOD AND APPARATUS FOR CONTROLLING FLUID FLOW INTO A WELLBORE |
摘要 |
<p>In one aspect, an injection apparatus for use in a wellbore is disclosed wherein the apparatus includes a tubular housing and a shield housing disposed outside the tubular housing, the shield housing including a chamber in fluid communication with the tubular housing. The apparatus further includes a piston disposed within the shield housing, the piston coupled to a biasing member, wherein movement of the piston controls fluid communication between the chamber and the wellbore, and wherein the movement of the piston is caused by a pressure change of a fluid within the tubular housing.</p> |
申请公布号 |
CA2822571(A1) |
申请公布日期 |
2012.07.05 |
申请号 |
CA20112822571 |
申请日期 |
2011.11.28 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
SUN, KAI;CONSTANTINE, JR., JESSE J. |
分类号 |
E21B34/08;E21B34/14;E21B43/12 |
主分类号 |
E21B34/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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