DE2225377A1 - Drilling wells - Google Patents

Description

The subject of the present invention is a borehole for arrangement is provided in a hole drilled in the ground for pumping liquid and the a mud pipe located at the lower end of the borehole, in the upper part de ;; Additional pipe forming a well, as well as a filter part arranged between these includes, in connection with which latter a point is arranged, from which again a 'pipeline leads to the outlet of the liquid, whereby the filter part comprises a plurality of rings arranged one on top of the other, the spacing of which is provided by corresponding spacers located on the rings are determined.

The borehole, which is arranged in a hole drilled in the ground (see FIG. 1), comprises a mud pipe 1, a filter part 2 and an additional pipe 3. Within the filter part, a pump h is arranged, from which a pipe 5 to Runoff point of the water leads.

Through the filter part 2, the water in the soil can get into the pump room. Based on the structure of the surrounding soil and ^r irundwasserbestandes the slot size of the filter tube and the length of the filter part is fixed. For this reason, a good filter tube is required to be able to easily and simply adjust the water slot and to be able to connect the parts.

209852/0637

BAOORIGINAL

«■ r

The filter tubes used today are made of wood, ceramic materials, .Metal or plastic pipes are manufactured, and as additional pipes are threaded or Flanged connection used to connect steel or plastic pipes. With all of the above constructions, it has not been easy to open the slot of the To change part of the screen, but the slot is generally made fixed.

Because the adjustment of the slot in the constructions described above has been impossible at the installation site, you do not have to choose a suitable filter tube before the hole has progressed sufficiently deep and the soil thereby has been investigated. For this reason you have to filter tubes with different Keep slot size in stock. The constructions used are very expensive because it is difficult to manufacture. Often times, the shape of the slot cannot be cheap design in such a way that the soil carried by the water does not penetrate the slot To block. The flange, thread and the like connections of the filter and additional pipes enlarge the pipe diameter and thus change the filter pipe in particular Flow characteristics. The connections used are also expensive and slow to assemble.

The present invention aims to obviate the above-mentioned drawbacks and create a more effective wellbore. The drill well according to the Invention is mainly characterized in that the spacers in the form

and

of elevations ¥ βη incisions with graduated height or depth or in the form of interacting wedge elements are designed to adjust the setting to allow any ring spacing.

The invention is illustrated below with the aid of the exemplary embodiments of the accompanying drawings explained in more detail.

As has already emerged, FIG. 1 shows schematically a borehole according to the invention.

Figure 2 shows on an enlarged scale and as a partial longitudinal section Screen part of the borehole according to Figure 1.

FIG. 3 shows, as a partial longitudinal section, an arrangement of the rings of the filter part of the borehole according to the invention.

Figure h shows a second arrangement of the rings of the filter part of the borehole according to the invention.

Figure 5 shows a third arrangement of the rings of the filter part of the borehole according to the invention viewed from above.

FIG. 6 shows an arrangement according to FIG. 5 viewed from the side.

The well pipe system according to the present invention thus consists of an additional pipe, a mud pipe 1, a connecting band 9, the body (skeleton) 10 of the filter part k and adjusting rings 11, 12 arranged around the body, which are made of different plastics using different manufacturing processes have been (Figure 2).

209852/0637

The water slot 19 is adjustable in the filter tube h according to the Erifinäung either with sufficiently small steps or continuously in a certain range. The filter elements and the additional pipes 3 can be connected easily and quickly to a length required by the respective position. Thus, the size of the slot 19 can be determined at the installation site, and it is sufficient to keep only one basic element in stock. With this construction it is possible to make the water slot 19 more advantageous for the flow of the water. The blockage of the water slot caused by the gravel can also be reduced by design. By making the entire system from plastic, corrosion, fouling and the like troubles are avoided. In addition, the friction factor of the plastic is low, and so the sludge carried by the bottom with the water does not block the filter tube construction.

The additional pipe 3 is designed so that its parts partially interlock go in and that a channel 7 is formed at the junction. On the additional pipe an incision 8 has been formed on the channel T, through which a closure tire 9 is pushed into the channel T.

The filter part U consists of a body or framework 10 around which adjustment rings 11 and 12 are stacked. The upper part of the body 10 has a tapered threaded part 13 on which the adjusting rings 11 and 12 are tightened with a suitable nut lh. The upper and lower parts of the body 10 have connecting members which are similar to those of the additional pipe 3. The lower end of the filter part has a sludge pipe 1, as which, for example, the additional pipe 3 is suitable in the system according to the present invention. The lower end of the mud pipe is closed with a plug 15.

Figure 3 shows an arrangement of the setting rings 11 and 12. The ring 11 has on the surface 16 incisions IT of various depths, to which the elevations 18 fit on ring 12. Thus, by placing the rings 11 and 12 one after the other on the body 10 (FIG. 2) so that the elevations 18 make the desired incision 17, the distance between the rings (the water slot) can be adjusted almost continuously.

Figure U shows another setting application of the water slot 19. Here is on the ring 11 a wedge-shaped, equipped with grooves or otherwise made rough Incision 20 has been made and the ring 12 has been equipped with a wedge-shaped elevation 21 matching the incision 20. By having the rings be rotated, the height of the water vent 19 can be adjusted.

The well pipe system according to the invention is put together so that the additional pipe 3 (FIG. 2) is closed with a plug 15, it being suitable for a sludge pipe 1. This mud pipe 1 is secured with a closure tape 9 connected the desired number of body pieces 10 of the filter part. The additional mud pipe has a flange 22 on which filter rings 11 and 12 in the positions required by the required water slot. To the

209852/0637 = * = s

BAD ORfGINAt

Finally, the ring stack thus collected is tightened with a nut lk at the upper end of the body 6. The required amount of additional pipes 6 is connected to the upper end of the body 6 in the manner of connection described earlier.

Figures 5 and 6 show an additional application of the invention. figure 5 shows the filter tube seen from above and FIG. 6 shows the filter rings.

The adjusting rings 2k have at equal intervals on the top and bottom of the ring to the perimeter substantially tangentially arranged wedge surfaces 26 and contact surfaces 25. The rings 2k, which are identical in itself, be sogepasst each other so that the wedge face points 26 of each second ring in a direction and every other ring narrowing in the opposite direction. By fitting the "shoulder surface 25 of one ring 2h" at different locations on the wedge surface 26 of the next ring, the ring spacing 19 can be set as large as desired. The inner surface of each ring 2k has a pin 27 which leads to mutually asymmetrical adjustment grooves 28 can be arranged on the outer surface of the body frame 10. These adjustment channels 28 are preferably arranged in relation to a uniform division over the circumference of the frame with a uniformly increasing phase shift to one another.

Thus, if the pin 27 of a ring to the adjusting groove 28 at point 0.0 (Figure 5) and the pin 27 of the next ring (by turning the ring inside out is) is arranged for the corresponding control channel at point 1.0 ,,. one obtains a relatively small distance between the rings (water slot). If you use pin 27 of the another ring to the control channel in point 2.0 is obtained accordingly a twice as large distance etc.

ORIGINAL

Claims (1)

Patent claims: 1 * A artesian _a d? R is provided for assembly in a drilled into the ground hole to pumpers vran liquid and 'of an onboard lower end of the bore well mud pipe (I) _9, a the -oberen part of Bohrbrunnena forming Zusatzroto C3K and a between these fl, 3) arranged filter part (2), in ¥ erbindimg with the latter a pump ik) is arranged, from which a pipe (5) again leads to the outflow point of the liquid, the filter part ta | comprises a plurality of bings (11, 12) arranged on top of one another, the distances from one another {19) being determined by corresponding spacers (IT ₁ -iBj 20, 21; 25, 26) located on the "rings (11, 12), characterized in that the spacers (17, l8j 20, 21j 25, 26) * f in the form of elevations' * are formed n incisions with graduated height or depth or in the form of cooperatively with each other üeilelementen to the setting of any ftingenabstandg • zm enable 2 »A drill well according to claim 1, the spacers in Form of elevations and incisions are formed, characterized in that “The openings (18) are of the same height, but the height of the various incisions ClT) "to" is stepped. 3, A well according to claim 2, characterized in that every other Hing (II) incisions (17) on both the top and bottom and Correspondingly, every second hanging (12) increases (18) on both the upper «1.3 Ur \ 1 / er3 has, %, A well according to claim 1, wherein the 'spacers in Form of Xeilelemente are formed, characterized in that the wedge elements In the surface of the bing (11) there are wedge-shaped incisions (203 and on the surface of the next Mnga (12) located corresponding wedge-shaped irhSirangem (21), the wedge-shaped surfaces being essentially tangential to the circumference -The ring are arranged. 5 »A borehole according to claim h _% characterized in that the surface of the incisions (20) and the elevations are provided with" grooves "or are otherwise rough. 6, A drill well according to claim 1, wherein the spacers are designed in the form of wedge elements, characterized in that the Kdlelemente ^ on setting rings {2h) are preferably located on both the top and bottom of the ring, tangential to the circumference wedge surfaces (26) and that each setting ring (2U) has a pin (27) on the inside, which is arranged on the outside surface of a framework (10) belonging to the drilling well and arranged asymmetrically to one another can be:; 209852/0637 ORIGINAL INSPECTED 7. A drilling well according to claim 6, characterized in that · the adjustment grooves (28) in relation to a uniform division over the Perimeter of the framework (1O) with a steadily increasing phase shift (A) are arranged to each other. 209852/0637 BATH ORIGINAL Empty page