Claims
- 1. An erecting rig for a well pump having a string of several releasably coupled risers comprising
- a hollow upright;
- a head member and a foot member fixed to top and bottom ends, respectively, of the upright;
- a mast supported by said upright;
- guide pulley means arranged at an upper end of said mast and having a radius which corresponds substantially to the distance between the axes of said mast and said upright, the distance determined by said head member and said foot member;
- a pulling element passing around said pulley means and said pulling element including connected elements extended downward from said pulley means in parallel lines to each other with said pulling element at one end having means for suspension of a riser and at the other end having a connecting means for a lifting device;
- said foot member being a ground engaging member;
- said mast having its bottom abutted against said foot member.
- 2. The erecting rig for a well pump of claim 1, further comprising
- said foot member having a supporting socket means to receive and support said mast.
- 3. The erecting rig for a well pump of claim 1, further comprising
- said mast being a monopode.
- 4. The erecting rig for a well pump of claim 1, further comprising
- said guide pulley means having a diameter to extend said pulling element connected elements along the axis of a riser and of a connecting means for a lifting device to prevent lateral and bending forces on said mast.
- 5. The erecting rig for a well pump of claim 1, further comprising
- said guide pulley means having a radius measured from the axis of said mast equal to the distance to an axis of a riser positioned parallel to the axis of said mast during lifting movement of the riser to prevent a component forcing a riser against walls of said upright.
- 6. The erecting rig for a well pump of claim 1, further comprising
- said connecting means for a lifting device including means for anchoring said head member on a said parallel line of a said connected element of said pulling element.
- 7. The erecting rig for a well pump of claim 6, further comprising
- a lifting device attached on said connecting means for a lifting device and having guide means attached to said lifting device to guide said lifting device for vertical displacment along said mast.
- 8. The erecting rig for a well pump of claim 1, further comprising
- slab support means beneath said ground engaging member to provide an additional solid support surface for said upright.
- 9. The erecting rig for a well pump of claim 1, further comprising
- said pulling element at said end having means for suspension of a riser having a crowfoot with a yoke to lift a string of risers.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3337698 |
Oct 1983 |
DEX |
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Parent Case Info
This application is a continuation of application Ser. No. 658,709, filed Oct. 9, 1984, now abandoned.
US Referenced Citations (6)
Continuations (1)
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Number |
Date |
Country |
Parent |
658709 |
Oct 1984 |
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