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1. 发明授权

US5678634A Method and apparatus for retrieving a whipstock 失效
标题翻译：用于检索造斜器的方法和装置
公开(公告)号：US5678634A
公开(公告)日：1997-10-21
申请号：US544371
申请日：1995-10-17
申请人： Hans H. Rehbock , Gerald Lynde , Ed Lueders , Bryan Franklin McKinley , John J. Johnson , Greg Nazzal
发明人： Hans H. Rehbock , Gerald Lynde , Ed Lueders , Bryan Franklin McKinley , John J. Johnson , Greg Nazzal
IPC分类号： E21B7/06 , E21B7/08 , E21B23/00
CPC分类号： E21B23/00 , E21B7/061
摘要： A retrieval tool for whipstocks is disclosed. A latch is retractable into the tool upon application of hydraulic pressure. A locking pin securely fastens the whipstock and retrieving tool together. The hydraulic pressure acts a cleaning force on the top of the whipstock and the retrieving slot to facilitate engagement. The offset stabilizer, when oriented opposite the lug on the retrieving tool, creates a force in the direction of the lug, whereby latching the retrieving tool will start. A joint of drillpipe or heavyweight drillpipe is run above the eccentric stabilizer. An offset stabilizer is provided to ensure proper initial orientation and avoid sticking the tool. The latch can firmly grip lugs within a slot in the whipstock. A overshot design is also disclosed using a similar hydraulically actuated latch assembly where the latch grabs the whipstock without having to use an opening therein, if for any reason the opening has been fouled with debris or damaged due to milling. Generally, release from the whipstock cannot occur unless hydraulic pressure is reapplied to release the latch and locking pin, thus allowing them to retract toward the body of the retrieval tool.
摘要翻译：披露了一种造斜器的检索工具。在施加液压压力时，闩锁可伸缩到工具中。锁定销牢固地将造斜器和检索工具固定在一起。液压作用在造斜器和回收槽的顶部上的清洁力以便于接合。偏移稳定器当与检索工具上的凸耳相对定向时，在凸耳的方向上产生一个力，从而起动检索工具的闭锁。钻杆或重型钻杆的关节在偏心稳定器上方运行。提供偏移稳定器以确保正确的初始取向，并避免粘附工具。闩锁可以牢牢地抓住造斜器中的槽中的凸耳。还公开了使用类似的液压致动闩锁组件的过冲设计，其中闩锁抓住造斜器而不必在其中使用开口，如果由于任何原因，开口已经被碎屑弄脏或由于铣削而损坏。通常，除了重新施加液压以释放闩锁和锁定销，从而允许它们朝着检索工具的主体缩回，否则不会发生从造斜器的释放。

2. 发明授权

US5979571A Combination milling tool and drill bit 失效
标题翻译：组合铣刀和钻头
公开(公告)号：US5979571A
公开(公告)日：1999-11-09
申请号：US936056
申请日：1997-09-23
申请人： Danny Eugene Scott , Jack Thomas Oldham , Gerald D. Lynde , Greg Nazzal , Roy E. Swanson , Brad Randall , James W. Anderson
发明人： Danny Eugene Scott , Jack Thomas Oldham , Gerald D. Lynde , Greg Nazzal , Roy E. Swanson , Brad Randall , James W. Anderson
IPC分类号： E21B7/08 , E21B10/54 , E21B10/56 , E21B10/567 , E21B29/06 , E21B7/04 , E21B10/46
CPC分类号： E21B10/567 , E21B10/54 , E21B10/5676 , E21B29/06
摘要： A combination metal milling and earth drilling tool, for use in performing a single trip kickoff from a casing in a well bore. The combination milling and drilling tool has a first, relatively more durable cutting structure, such as tungsten carbide, and a second, relatively harder cutting structure, such as polycrystalline diamond. The more durable first cutting structure is better suited for milling metal casing, while the harder second cutting structure is better suited for drilling through a subterranean formation, especially a rock formation. The first cutting structure is positioned outwardly relative to the second cutting structure, so that the first cutting structure will mill through the metal casing while shielding the second cutting structure from contact with the casing. The first cutting structure can wear away while milling through the casing and upon initial contact with the rock formation, thereby exposing the second cutting structure to contact with the rock formation. The second cutting structure can then be used to drill through the rock formation.
摘要翻译：一种组合的金属铣削和地面钻孔工具，用于从井筒中的套管执行单次行程启动。组合铣削和钻孔工具具有第一相对更耐用的切割结构，例如碳化钨，以及第二，相对较硬的切割结构，例如多晶金刚石。更耐用的第一切割结构更适合于铣削金属套管，而较硬的第二切割结构更适合于穿过地下地层，特别是岩层的钻孔。第一切割结构相对于第二切割结构向外定位，使得第一切割结构将铣削通过金属壳体，同时屏蔽第二切割结构而不与壳体接触。第一切割结构可以在铣削通过壳体并且与岩层初始接触时磨损，从而暴露第二切割结构以与岩层接触。然后可以使用第二切割结构钻穿岩层。

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