发明名称 |
Apparatus and method for installing a conduit within an arcuate bore |
摘要 |
An apparatus and method for drilling and then installing a production conduit (46) within an enlarged bore hole (D) along an underground path (P) between two surface locations (C, D). Upon completion of a pilot bore hole (B), a reamer (48) enlarges the bore hold (B). The drill string (10) is returned to the exit opening (E) for connection to the production conduit (46) for pulling the conduit (46) within the enlarged opening (D). One embodiment (FIGS. 19-21) utilizes canted rollers (168) for supporting the production conduit (46) at the exit opening (E) and effecting rotation thereof as the production conduit (46) is fed into the enlarged diameter opening (D).
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申请公布号 |
US4784230(A) |
申请公布日期 |
1988.11.15 |
申请号 |
US19870072529 |
申请日期 |
1987.07.13 |
申请人 |
CHERRINGTON, MARTIN D.;CHERRINGTON, WILLIAM D. |
发明人 |
CHERRINGTON, MARTIN D.;CHERRINGTON, WILLIAM D. |
分类号 |
E21B7/04;E21B7/06;E21B7/18;E21B7/20;E21B7/28;E21B10/00;E21B10/60;E21B17/00;E21B17/04;E21B17/042;E21B19/22;G06F9/44;(IPC1-7):E21B7/04;E21B7/08;E21B3/02;E21B10/26 |
主分类号 |
E21B7/04 |
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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