RU2254412C1 - Building method for waterproofing screen - Google Patents

Abstract

FIELD: oil industry, particularly for oil field construction, namely to build collecting pit for storing waste products produced during well drilling.

SUBSTANCE: method involves excavating trench and waterproofing thereof with the use of film waterproofing material having weld seams facing outwards. The film waterproofing material has excessive dimensions necessary to form corrugations on collecting pit edge. Film waterproofing material is laminated with spaced adhesive polymeric strips glued thereto transversely to weld seams. Distance between the strips is not more than 3 m. Strip ends are connected to the outside of elastic polymeric web material. Collecting pit surface is covered with waterproofing film so that film edges extend above the pit. Connection areas of neighboring pits are wound in one dense roll having length of not less than 0.3 m. The ready roll is freely laid on trench bottom and pressed against the bottom with kentledge along the full length thereof with keeping channel permitting liquid to flow through the trench.

EFFECT: increased reliability.

2 dwg, 1 ex

Description

The invention relates to the oil industry and may find application in the arrangement of an oil field, in particular in the construction of a storage barn designed to accommodate well drilling waste.

Known methods of constructing waterproofing screens around barns with liquid waste by driving a narrow slit-like trench along the perimeter of the barn to a predetermined depth and then filling it with clay-cement mortar (USSR Author's Certificate No. 987010, class E 02 B 3/16, publ. 1983), or clay-soil paste (USSR Author's Certificate No. 1439174, class E 02 B 3/16, publ. 1987), or elastic sheaths (USSR Author's Certificate No. 1397590, class E 02 B 3/16, publ. 1986).

The disadvantages of these methods of constructing waterproofing screens is that a slit-like trench resembles an already dug (finished) barn with a deviation of 1.5-2.0 m from its walls so that heavy equipment can pass and not collapse the walls. It also causes an increased consumption of materials to fill the slit-like trench. Known methods do not provide sufficient reliability of the waterproofing screen.

Closest to the claimed invention in technical essence is a method of constructing a waterproofing screen, including digging a slit-like trench to a depth of the barn in the dimensions of the future barn, deviating from the proposed walls by 0.5-1.0 m, filling the trench with an insulating composition, digging the barn itself and coating its bottom with an insulating composition (RF Patent No. 2016958, class E 02 B 3/16, publ. 30.07.1994. - prototype).

The known method does not provide sufficient reliability of the waterproofing screen

The invention solves the problem of increasing the reliability of the waterproofing screen.

The problem is solved in that in the method of constructing a waterproofing screen, including digging a trench and a barn and making them insulated, according to the invention, film insulation is used as insulation, made by welds to the outside with a size margin to form corrugations on the edge of the storage barn and glued on the other side with strips polymer adhesive tape perpendicular to the welds with a distance between the strips of not more than 3 m and the output strips on the outside of the elastic polymer web, cover the film the surface of the barn and remove the ends of the film insulation above the trench, the joints of the film insulation from neighboring barns are rolled into a single tight roll of at least 0.3 m long on the side, lay the resulting roll without tension on the bottom of the trench and press down with the load on the bottom of the trench along the entire length, leaving room for fluid to flow through the trench. The features of the invention are:

1) digging a trench and a barn;

2) the implementation of their isolation;

3) the use of film insulation as insulation;

4) the same made out with welded seams with a margin of sizes for the formation of corrugations on the edge of the storage barn and glued on the other side with strips of polymer adhesive tape perpendicular to the welds with a distance between the strips of not more than 3 m and the strips leading to the outside of the elastic polymer web;

5) coating the surface of the barn with film insulation and ending with the film isolation over the trench;

6) folding the joints of the film insulation into a single tight roll with a length of at least 0.3 m per side;

7) laying the resulting roll without tension on the bottom of the trench;

8) pressing down by the load on the bottom of the trench along the entire length;

9) space for fluid flow through the trench.

Signs 1, 2 are common with the prototype, signs 3-9 are the essential distinguishing features of the invention.

SUMMARY OF THE INVENTION

Liquid waste from drilling and oil production (waste drilling fluids, wastewater, oil sludge, etc.) containing various toxic and harmful substances (chemical reagents, mineral salts, oil and oil products) and stored in earthen barns are sources of environmental pollution. The specified pollution occurs as a result of the filtration of liquid pollutants through the walls and bottom of the earthen barn and trench, especially if they are built in well-permeable soils (sand, breccia, flagstone, etc.). The invention solves the problem of increasing the reliability of the anti-filter screen of an earthen barn and trench. The problem is solved as follows.

The device of the barn, trench and waterproofing screen shown in figures 1 and 2.

According to FIGS. 1 and 2, a trench 1 and barns are being dug on a planned site. As a waterproofing for barns 2, film insulation is used, welded from strips 3 of polymer film into the waterproofing screen with welds 4 outward with a size margin to form corrugations 5 on the edge 6 of barn 2 and glued on the other side with strips 7 of polymer adhesive tape perpendicular to the welds 4 with a distance between the strips 7 of polymer adhesive tape no more than 3 m and the output of the strips 7 of polymer adhesive tape to the outside of the film insulation 3. Cover by night insulation 3 the surface of the barn 2 and the ends of the film insulation 3 are removed from the neighboring barns 2 above the trench 1 located between the barns 2. Roll the joints 9 of the film insulation 1 into a single tight roll 11 with a length of at least 0.3 m per side. Stack the roll 11 without tension on the bottom of the trench 1 and press down with a load 10 at the bottom of the trench 1 along the entire length, leaving a space 8 for the fluid to flow through the trench 1. As a cargo, bags made of polymer film filled with bulk material are used.

Concrete example

On the planned site, storage barn 2 is digged with side sizes of 15 and 8 m and with a 1.5 m deviation from the walls of the barn, between the barns they dig a trench 1 with a depth of 0.15 m and a width of 0.15 m.

As insulation, film insulation is used, welded from strips 3 with a thickness of 0.3 mm and a width of 3 m of a polymer film into the waterproofing screen with welds 4 outward with a margin of dimensions of 0.5 m on each side to form corrugations 5 on the edge 6 of the barn 2 and glued on the other side with strips 7 of polyethylene adhesive tape 0.3 m wide perpendicular to the welds 4 with a distance between the strips 7 of polymer adhesive tape 3 m and the output of strips 7 of polymer adhesive tape to the outside of the film insulation 3.

The surfaces of the barns 2 are coated with film insulation 3 and the ends of the film insulation 3 are removed from neighboring barns 2 above the trench 1 to a distance of 0.3 m. The joints of the film insulation 3 are rolled up into a single tight roll 6 of 0.3 m length per side. Stack the roll 11 without tension on the bottom of the trench 1 and press down with a load of plastic bags of sand 7 on the bottom of the trench 1 along the entire length, leaving a space 8 with a height of 10 mm for the flow of fluid through the trench 1.

As practice shows, a waterproofing screen made in this way works reliably and provides isolation of the soil from process fluids during the entire required period. Under the waterproofing screen is not observed swelling, windage. Gusts and other violations of the integrity of the waterproofing screen are not observed. There are no leaks of process fluids.

The application of the proposed waterproofing screen will improve the reliability of the storage of liquids in the barn.

Claims (1)

A method of constructing a waterproofing screen, including digging a trench and a barn and making them insulated, characterized in that the insulation is film insulation made outward with welded seams with a size margin to form corrugations on the edge of the storage barn and glued on the other side with stripes of polymer adhesive tape perpendicular welds with a distance between the strips of not more than 3 m and the output strips on the outside of the elastic polymer web, film-coated the surface of the barn and the ends of the film insulation are removed over the trench, the joints of the film insulation from neighboring barns are rolled up into a single tight roll of at least 0.3 m long on the side, the resulting roll is laid without tension on the bottom of the trench and pressed down by the load on the bottom of the trench along the entire length, leaving space for the duct fluid through the trench.

Images