发明名称 |
METHOD OF PREVENTING SCRAPERS ON A RECIPROCATING SUCKER ROD FROM WEARING GROOVES IN WELL TUBING, AND A SCRAPER |
摘要 |
A method of preventing scrapers on a reciprocating sucker rod from wearing grooves in well tubing. The first step involves providing at least one scraper having a body with two opposed spiral vanes each of which extends 180 degrees around the body and flow channels positioned between the spiral vanes. The second step involves securing the scraper to a reciprocating sucker rod. The third step involves positioning the sucker rod within well tubing having an inner circumference with the two opposed spiral vanes engaging 360 degrees of the inner circumference of the well tubing while fluids bypass the body by means of the flow channels.
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申请公布号 |
CA2221514(A1) |
申请公布日期 |
1999.05.19 |
申请号 |
CA19972221514 |
申请日期 |
1997.11.19 |
申请人 |
RG INDUSTRIES LTD. |
发明人 |
VERMEEREN, THOMAS HUBERT |
分类号 |
E21B17/10;E21B37/10;(IPC1-7):E21B17/10 |
主分类号 |
E21B17/10 |
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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