PEGORETTI MARCOS ROGERIO (BR)
| WO2002034423A1 | 2002-05-02 |
| US4343358A | 1982-08-10 |
| 1. | CUTTING PROCESS TO SIZE RIPS IN GROOVED TUBES FOR PETROLEUM ABSTRACTION IN HORIZONTAL AND VERTICAL WELLS, marked by the possibility to size rips at petroleum abstraction tubes. |
| 2. | CUTTING PROCESS TO SIZE RIPS IN GROOVED TUBES FOR PETROLEUM ABSTRACTION IN HORIZONTAL AND VERTICAL WELLS, accord the vindication 1, marked by the laser using to do the rips at the petroleum abstraction tubes. |
| 3. | CUTTING PROCESS TO SIZE RIPS IN GROOVED TUBES FOR PETROLEUM ABSTRACTION IN HORIZONTAL AND VERTICAL WELLS, accord the vindication 1, marked by the possibility of substitution of the straight rip by the conic or semi conic rip at the tubes, preventing the obstruction by the accumulation of solid residues at the straight rips along the abstraction process. |
The current invention is related to a cutting process to size rips in grooved tubes for petroleum abstraction in horizontal and vertical wells, most precisely it's a teclmologic newness at these rip cutting process, being unaware of similar patented or currently used procedures.
At petroleum abstraction, vertical and horizontal tubes are inserted in the wells. Axial cuts are made at the tube surface, through whose will pass the embezzled liquid.
Generally discs that somehow supply the demand make these cuts.
But these discs carry through straight cuts with a single size. In this case some solid residue with variable thickness are suctioned within the liquid, and this grain could partially or totally obstruct the oil flux, causing a clogging and consequent tube change to maintenance. Besides, the production would be interrupted unnecessarily, and then, there would be liquid flow rate loss in the well.
The cutting process to size rips in grooved tubes for petroleum abstraction in horizontal and vertical wells was developed to solve these problems as described at the attached DRAWING.
DRAWING 01 : A perspective view of a tube, pointing its lateral rip; presenting the details of a cut made by this process, a comparative view between the straight rip and the new rip made by this process.
As can bee seen at the report, the cutting process to size rips in grooved tubes for petroleum abstraction in horizontal and vertical wells attends to the basic newness and industrial applications necessary items for the patent approval.
DRAWING 02: Detail about the semi conic rip
As can be seen, the cutting process to size rips in grooved tubes for petroleum abstraction at horizontal and vertical wells will allow cuts with the desired size. Opposing to the later situation when abrasive discs made the cuts, this system will operate with laser. As the laser technology allows controlling and programming, the user will decide about the size and opening angle of the rips, and at horizontal tubes specifically the rip will be trapezoidal, with the entrance size (1) minor than the exit size so, in the case of granulated residue aspiration it will only find resistance at the outside edge of the rip (I). Besides, as the opening angle is divergent, after the grain pass the resistance it will follow the aspirated liquid. There is still the possibility of the semi conic rip using, so a parallel part with a greater dragging wear resistance can be obtained, like the DRAWING (2).
The cutting process to size rips in grooved tubes for petroleum abstraction in horizontal and vertical wells will allow the rip sizing in addition to fix the shape an the angle tendency of the rip, and can be applied to both horizontal or vertical tubes. More details about this rip can be seen in DRAWING (2). The conic shape and the straight part size can be defined by the laser parameters control Although the cutting process to size rips in grooved tubes for petroleum abstraction in horizontal and vertical wells was first designed to petroleum abstraction industry, it can also be used for several other cutting applications at several shaped structure.