Oil well tooling positioning apparatus and method |
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| 申请号 | US38153273 | 申请日 | 1973-07-23 | 公开(公告)号 | US3840970A | 公开(公告)日 | 1974-10-15 |
| 申请人 | HAWKINS H; | 发明人 | HAWKINS H; | ||||
| 摘要 | Apparatus and method for centering a lower oil well tool beneath a suspended upper oil well tool and for positioning and rotational coupling of the tools. A centering device receives and positions the lower oil well in generally vertical alignment with the upper oil well tool. A rotatable table carries the centering device at a fixed, predetermined location thereon. The table can be raised upwardly carrying the centering device and the lower oil well tool until the lower oil well tool engages the upper oil well tool. The table can then be rotated to begin the coupling of the two tools. The centering device can also be used alone and can accommodate oil well tools of various diameters and configurations. | ||||||
| 权利要求 | 1. Apparatus for centering a heavy lower oil well tool or the like beneath a suspended upper tool or the like and for the positioning and rotational coupling of the upper and lower tools together, said apparatus comprising: centering means for receiving and positioning said lower oil well tool thereon, said centering means including lateral positioning means associated therewith for selectively engaging said lower oil well tool and moving said engaged lower oil well tool laterally along said centering means to a position generally vertically aligned with said upper tool; table means for receiving said centering means thereon, said table means having guide means cooperating with guide means on said centering means to thereby align said centering means on said table means in a fixed, predetermined location; raising means associated with said table means for raising the table means and thus said centering means and said lower oil well tool carried thereby generally vertically upwardly until the lower oil well tool engages the upper oil well tool in a generally vertically aligned relationship therewith; and mounting means associated with said table means for rotatably mounting said table means to permit the rotation of the lower oil well tool, the table means and said centering means relative to the upper oil well tool for rotationally coupling the tools together. 2. The apparatus of claim 1 wherein said centering means includes a base portion having said lateral positioning means thereon, said lateral positioning means including a drive shaft having right and left-hand threaded portions thereon and a camming surface separating said threaded portions, said drive shaft being threaded into a threaded aperture extending laterally of said base portion. 3. The apparatus of claim 2 wherein said lateral positioning means further includes a first nut having right-hand threads threaded onto the right-hand threaded portion of said drive shaft and a second nut having left-hand threads threaded onto the left-hand threaded portion of said drive shaft, the upper surface of said base portion having camming means thereon camming said camming surface in a manner preventing axial movement of said drive shaft in said aperture. 4. The apparatus of claim 3 wherein said lateral positioning means further including a pair of longitudinally extending slots extending through the upper surface of said base portion and longitudinally aligned with the respective right- and left-hand threaded poRtions of said drive shaft, said nuts having extension portions thereon extending into their respective slots and slidable therealong. 5. The apparatus of claim 4 wherein said lateral positioning means includes a pair of plates fixedly secured to each of said extension portions, each of said plates having an arcuate portion opening inwardly of said base member and adapted to selectively abut against said lower oil tool when said drive shaft is rotated. 6. The apparatus of claim 5 wherein said lateral positioning means includes a pair of elongated jaws extending upwardly from each of said plates and fixedly secured thereto, each of said jaws being generally U-shaped in cross-section and opening in the same direction as said arcuate portions to thereby selectively abut against the outer surface of said lower oil well tool when said drive shaft is rotated. 7. The apparatus of claim 6 wherein said lateral positioning means includes a plurality of abutment surfaces on the upper outer edges of said jaws. 8. A method for laterally positioning an oil well tool on a rotatably mounted table having a centering guide thereon, said method comprising the step of: placing a centering tool having a pair of laterally movable surfaces with abutment portions thereon on said table aligned with said centering guide; placing said oil well tool at a predetermined location on said centering tool; simultaneously moving both of said movable surfaces until said oil well tool is engaged by one of said abutment portions; and continuing the movement of said movable surfaces until said oil well tool is moved laterally along said centering tool to a predetermined location thereon clamped between said movable surfaces. |
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