Earth sump reclamation method

FIELD: earth recovery during drilling work performing.

SUBSTANCE: method involves waterproofing sump walls and bottom; filling thereof with used drilling mud; pumping-out liquid phase and filling thereof with peat and mineral ground. Liquid phase is previously accumulated in the sump and cleaned. Mineral ground, peat and used drilling mud are mixed one with another and supplied to bank slope or to road slope. Then grass is planted on slopes. Cleaned liquid phase is used for grass watering.

EFFECT: increased quality of earth sump reclamation.

1 dwg

 

The invention relates to the technology of restoration of disturbed land in the field of ecology in the course of drilling operations during the construction of the fields.

Method of reclamation of pit is designed to create artificial landscapes after completion of the well construction wells.

The aim of the invention is to improve the quality remediation sumps. This is achieved in that the liquid phase pre-localize in the volume of the barn and clean, mineral soil, peat and waste drilling mud is stirred and move on the slopes of the cluster aggregates and adjacent roads on slopes seeded grass that is watered purified liquid phase. The proposed method allows to diversify formed by the natural landscape, to reduce the risk of waste drilling mud.

Known method of eliminating sumps, including isolation of the bottom and walls of the barn, filling the barn waste mud (OBR), the pumping of the liquid phase ARR, filling the barn with mineral soil and catching coagulation clots in the pit, which is then also filled with mineral soil (see Fedoriv L.V. and other Reclamation pit in the conditions of the Middle Ob basin. "Oil industry, No. 6, M. 1986, pp.5-6).

This method has a major drawback, since it is connected with is the growth of earthworks, that increases the cost of the construction of wells.

The closest analogue is the way reclamation sumps, including waterproofing of the walls and bottom, filling the spent drilling fluids, the pumping of the liquid phase, the elimination of fluidity coagulation clots waste drilling mud with peat and filling mineral soil.

However, the known method has the disadvantage in the following. In the backfill peat and mineral soil hazardous clicks denied access of air, which interrupts the biological decomposition of hydrocarbons, which is the main pollutant in determining the risk of drilling waste. In result, it becomes impossible for biological reclamation. In addition, there is a risk of removal of pollutants beyond the well pad surface and underground watercourses. Another disadvantage is that the liquid phase is pumped out of the pits, is also a polluter of the natural environment, cannot be used for technical purposes and requires additional recycling.

The purpose of this invention is to improve the quality of technical reclamation of the pit by preventing possible future environmental pollution and enhance subsequent biological degradation of Zagra the distributors.

This objective is achieved in that the liquid phase pre-localize in the volume of the barn and clean, mineral soil, peat and waste drilling mud is stirred and move on the slopes of the cluster aggregates and adjacent roads on slopes seeded grass that is watered purified liquid phase. The proposed method is implemented in the following sequence.

During construction of well pads is filling mineral soil, the volume of which is arranged earthen barn, having a capacity sufficient to accommodate the waste drilling mud, which is formed in the course of drilling oil and gas wells. After completion of the well construction start reclaiming the barn. Initially the liquid phase ARR pumped in the allotted space in the barn, which localize with waterproofing, for example, film or dumping a mixture of sand and clay. Then produce a water purification liquid phase samples with known methods, such as coagulation sedimentation or filtration. In the remaining part of the barn imported sand and peat, which are mixed with the solid phase ARR. Mixing can be carried out by excavators or bulldozers. The resulting mixture is moved from the barn to the slopes, leveled and seeded with grass, herbage used for irrigation water from the purified liquid phase On The R. Released from the waste drilling mud and liquid phases clicks capacity earthen barn over time is filled with rain and melt water and becomes part of the landscape, which is able to diversify the natural ecosystem.

The implementation of this method is illustrated in the drawing, which shows schematically the sectional area of the oil field.

The numbers mark:

1 is a mixture of drilling waste, peat and mineral soil;

2 is a sectional slope dumping;

3 - fill wells;

4 - waterproofing;

5 - liquid phase compartment B;

6 - partition of sand and clay;

7 - liquid phase compartment;

8 - solid phase compartment;

9 - solid phase compartment B.

Marked by letters:

And - earthen barn with drilling wastes;

B - part of the earthen barn, where is the mixing of the solid phase of drilling waste from peat and mineral soil;

In part of the barn, where the cleaning liquid phase method assertion.

During construction of well pads is dumping 3 mineral soil, the volume of which is arranged earthen barn And, the walls of which are waterproofed with plastic film 4. After completion of the well construction start reclaiming barn filled with waste mud (ARR). Initially the volume of the excavation barn is arranged partition 6 from a mixture of sand and clay, which has waterproofing properties. This partition 6 divides the earthen barn And two compartment B and compartment Century, Then from section To pump the liquid phase ARR 7 is pumped into compartment B, and a solid phase ARR 8 from section To move the excavator in compartment B. After settling and separation of the liquid phase ARR 5 and the solid phase ARR 9 in the compartment B. the entire liquid phase ARR pumped in Osiek In using the pump. Thus, in compartment B remains the only solid phase samples, and in the compartment In only liquid phases ARR. The liquid phase in the compartment In purified, for example, by using a coagulant is aluminum sulphate. In compartment B are imported sand and peat, which is stirred with clicks. Mixing can be carried out by excavators or bulldozers. The resulting mixture was 1 move from compartment B on the slopes of the cluster dumping 2, leveled and seeded with grass, herbage used for irrigation water from the purified liquid phase samples from the Bay Century Exempt from drilling waste and liquid phase capacity earthen barn And over time is filled with rain and melt water and becomes part of the landscape, which is able to diversify the natural ecosystem.

This method is experimentally tested in the conditions of Western Siberia, in a swampy area on the pads of the Priobskoye field. As shown by the analyses, the content of the oil is s reduced 10-17 times the hazard class of the waste varies from III to V, and the germination of grass on slopes occurs within 10-15 days, the resulting artificial landscapes meet the aesthetic and environmental requirements.

Method of reclamation of pit cluster dumps, including waterproofing of the walls and bottom, filling the spent drilling fluids, the pumping of the liquid phase and the filling peat and mineral soil, characterized in that the liquid phase pre-localize in the volume of the barn and clean, mineral soil, peat and waste drilling mud is stirred and move on the slopes of the cluster aggregates and adjacent roads on slopes seeded grass that is watered purified liquid phase.



 

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FIELD: earth recovery during drilling work performing.

SUBSTANCE: method involves waterproofing sump walls and bottom; filling thereof with used drilling mud; pumping-out liquid phase and filling thereof with peat and mineral ground. Liquid phase is previously accumulated in the sump and cleaned. Mineral ground, peat and used drilling mud are mixed one with another and supplied to bank slope or to road slope. Then grass is planted on slopes. Cleaned liquid phase is used for grass watering.

EFFECT: increased quality of earth sump reclamation.

1 dwg

FIELD: mining, particularly reclamation of surface-mined areas in agriculture and building industry.

SUBSTANCE: method involves selectively excavating, moving and accumulating ground layer and overburden in separate strip dumps; excavating open-pit field; filling and smoothing thereof and ground layer laying. After open-pit field excavation the excavated space is filled with building waste up to high ground water layer. The building waste has composition close to that of natural minerals with different fraction dimensions. The building waste is laid in several layers each having thickness of 40-60 cm. Each layer is compacted with soil compactors or compacting mechanism. Then draining layer is laid. The draining layer has particle dimensions of 150-200 mm and thickness of not less than 0.6 m. The draining layer is compacted by vibratory plates. Draining layer is covered with fertile ground so that fertile ground layer having thickness of not less than 0.3 m is created. Then straw layer in which chemical fertilizers and perennial grass seeds are added is formed over fertile ground layer. The straw layer is smoothed and sprinkled with dispersions containing water-soluble polymeric substances and synthetic water-soluble phosphates, wherein synthetic water-soluble phosphates are taken in amount of 1-4% by ready dispersion weight.

EFFECT: reduced labor inputs and reclamation work costs, improved land protection against wind erosion and scouring.

4 cl, 1 dwg

FIELD: mining, particularly reclamation of surface-mined areas in agriculture and building industry.

SUBSTANCE: method involves selectively mining, moving and accumulating ground layer and overburden in separate strip dumps; excavating open-pit field; smoothing thereof and ground layer laying. After open-pit field excavation the excavated space is filled with building waste up to high ground water layer. The building waste has composition close to that of natural minerals with different fraction dimensions. The building waste is laid in several layers each having thickness of 40-60 cm. Each layer is compacted with soil compactors or compacting mechanism. Then draining layer is laid. The draining layer is layer of gravel-sand ground with particle dimensions of not more than 200 mm and has thickness of not less than 0.6 m. The draining layer is compacted by vibratory plates. Then two parallel spiral channels are excavated along each pit perimeter from slope side. Coil of each channel starts at pit slope top and terminates at bottom thereof at upper ground water level. Both channels are filled with building waste having particle dimensions of not more than 150 mm. After that holes for trees planting are dug out, wherein the holes are arranged between channel coils. Drainage layer is located on hole bottoms so that the drainage layer is connected with building waste of the channels and holes are filled with fertile ground. Then perennial grass, bushes and trees are planted in the reclamated land.

EFFECT: reduced labor inputs and reclamation work costs, improved land protection against wind erosion and scouring.

2 cl, 1 dwg

FIELD: environment protection, particularly to protect nature against dust blown off with wind from man-made massif surfaces.

SUBSTANCE: method involves contouring dust-forming surface and creating protective structures on dust-forming man-made massif surface in two mutually perpendicular directions, namely transversely to and along prevailing wind action directions; determining wind speed Vlim, m/s which provides maximum permissible dust concentration and maximal prevailing wind speed Vmax, m/s at massif sanitary zone boundary; partitioning man-made massif surface into square areas; installing protective barriers along protective barrier perimeters, wherein the protective barriers are formed of cellular material. Each square area has side length Lar determined from mathematical expression.

EFFECT: reduced dust carryover.

2 dwg, 1 ex

FIELD: mining, construction engineering, possible use during technical reclamation of quarry pits.

SUBSTANCE: method includes extracting the quarry field, forming paired stopping walls in extracted space of quarry field, filling the space between paired stopping walls by construction wastes, while preserving full height of draining and ventilation channels, and building a ceiling. After extraction of quarry field, present hanging sides of quarry walls are collapsed to impart required verticality to them, flexible longitudinal links are attached to quarry walls with following guniting of quarry walls with solidifying solution across whole perimeter of extracted quarry space. Then, quarry bottom is evened out with following densification by means of rolling with appropriate machines and devices, after that wells are drilled in soil by means of washout and soil is mixed with solidifying solution, then reinforcing cage is mounted therein with simultaneous feeding of concrete mixture for making iron-concrete pile in soil-cement cover, while diameters of soil-cement covers overlap one another, creating a foundation having increased filtration and hardness characteristics, paired stopping walls are built along perimeter of quarry, letting flexible longitudinal links through them with their following attachment inside paired stopping walls, and columns are set up to make a ceiling.

EFFECT: expanded area of possible use of extracted and reclaimed quarries, for example, for further industrial construction.

3 cl, 1 dwg

FIELD: mining industry, possible use for reclamation of damaged lands in agriculture, power-construction industrial branches.

SUBSTANCE: method includes, after extraction of quarry field is finished, closure of each quarry by reinforced structures made in form of sleeves of geo-synthetic material and filled with milled construction wastes, while ends of sleeves are sewn shut. Reinforced structures are placed one after another, closely to each other. On top of reinforced structures, draining layer is filled, then a layer of stripping rocks and finally a layer of potentially fertile soil with following seeding thereof with perennial grasses, brushes and trees.

EFFECT: decreased laboriousness and costs of restorative operations.

3 cl, 1 dwg

FIELD: mining industry.

SUBSTANCE: method includes separation of fertile layer during opening of mineral resources and stocking of rock during extraction of same, planning of open mines by backfill with rock and application of fertile layer with restoration of vegetation in accordance to land usage direction. During backfill of rocks into open mines, inclined trench is made from earth surface to open part of exposed formation outlet being left in sides of mine, which provides access and following underground extraction of left deposit resources, and is meant to be a part of payable area.

EFFECT: combination of coal extractive processes with reclamation of lands and preservation of access to concealed resources for their later extraction.

4 cl, 5 dwg

FIELD: methods of underground or surface mining, particularly reclamation of surface-mined areas after production of building stone and other surface-sited minerals.

SUBSTANCE: method involves developing open-pit field; caving hanging walls of the pit; forming floor; installing one-sided form and filling the created space with claydite-concrete; arranging heat-insulation and water-proofing screen along pit wall so that the screen extends for the full wall length, wherein the heat-insulation and water-proofing screen includes heat-insulation material combined with waterproofing sheets of surface waterproofing agent; erecting paired support walls provided with natural ventilation system along pit perimeter so that the support walls are spaced predetermined distance from pit wall; covering space between paired support walls and pit wall with surface waterproofing agent and filling the treated space with ice.

EFFECT: extended field of exhausted pit usage, for instance for further freezing facility construction.

3 cl, 1 dwg

FIELD: mining and processing industry, particularly to reclaim soil in agriculture and building and power engineering industries.

SUBSTANCE: method involves performing selective mining, conveying and stacking ground layer and overburden in separate strip dumps; developing pit field; filling exhausted space with building waste in several layers along with rolling of each building waste layer; leveling thereof with overburden and laying ground layer. Pit is filled with building waste up to mid-height pit level, but not under ground water level. After that building waste is rolled and covered with overburden for total pit filling. Then overburden layer is leveled. To prevent ground settlement wells are formed along filled pit surface, wherein the wells are formed up to design depth and are filled with building waste with each building waste portion compaction. Overburden layer, building waste layer, reinforced structure level formed of geo-synthetic sleeves filled with building waste milled to obtain particle dimensions of not more than 150 mm are serially laid on filled pit.

EFFECT: decreased labor inputs and costs.

1 dwg

FIELD: construction and mining, particularly reclamation of pit depressions after building stone and other surface mineral production.

SUBSTANCE: method involves working out pit; filling the worked-out space; leveling thereof and laying ground layer thereon. After pit working-out ditch and water-draining trenches are formed along pit perimeter to impart regular geometrical shape to pit along with pit side flattening to obtain pit sides inclination of not more than 30° along with following pit side compaction by rolling thereof with compaction machines and mechanisms; pouring sand on designed pit slopes; laying impervious screen made of high-density polyethylene on sand layer; pouring ground layer having thickness of not less than 0.5 m on the impervious screen; covering pit bottom with clay layer; compacting clay layer and inclining thereof towards collecting well composed of reinforced concrete rings; arranging radial bed drainage of crushed stone and sand on pit bottom so that the drainage is directed towards collecting well; forming water-removal ditch along pit perimeter; filling the pit with compacted building waste briquettes; arranging clay screen having thickness of not less than 0.3 m over building waste briquettes; arranging plant layer on clay screen.

EFFECT: decreased labor inputs and reclamation work costs.

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