Rock oriented cutting device

FIELD: mining.

SUBSTANCE: device includes a hollow cylindrical body with radial holes bushing with the bevelled inside edges, sleeve liquid permeable material, filled with loose substance solidified when interacting with the fluid. It is equipped with a second sleeve. The hollow cylindrical body with radial holes is made in the form of a cup which, on the side opposite to its bottom, is inserted with the possibility of longitudinal displacement into the sleeve to radial holes. The bushing from the side free from the mentioned housing is fastened to a pipe string for supplying a working fluid. One of these hoses is wound on the bushing and the second one on the end of the hull free from the bush to the radial holes.

EFFECT: increasing the tensile force in the plane orthogonal to the borehole axis and excluding the effect of the device on the rock break force.

5 cl, 1 dwg



Same patents:

FIELD: construction.

SUBSTANCE: invention relates to the field of construction and mining, can be used to destroy the monolithic concrete and reinforced concrete structures, thick-walled brick buildings, rocks, ground arrays, asphalt-concrete coatings. Monolithic array is destroyed by applying the force of 100-1000 kN, developed by elongated flexible member contacting with array in the form of segments of round-link chain interconnected by locks, which is forcibly pulled to the length of 1 to 6 meters by means of hydraulic device, comprising the fluid pressure source and, at least, one hydraulic cylinder with flexible rod, linked to the anchor by chains and destructible by monolithic array.

EFFECT: expansion of the scope, increase of mobility and provision of opportunity to work in hard-to-reach places, especially when removing the consequences of technogenic accidents and natural disasters.

6 cl, 12 dwg

The invention relates to mining, construction, can be used for breaking rocks in the mine working, dismantling brick and concrete buildings and other solid objects into blocks correct form suitable for further use

The invention relates to the mining industry and construction and can be used in particular for the destruction of rocks and concrete

The invention relates to the mining industry, can be used to obtain the stone blocks of the specified forms of hard rock

FIELD: oil and gas industry.

SUBSTANCE: coupling comprises a housing with inner trapezoidal grooves, a movable element in the form of a pipe with a mating protrusion of trapezoidal shape on the outer surface and a seat for placement of the ball inside, a port for hydraulic fracturing, a ball activating the movable element, a hollow piston with holes and a supporting spring mounted in the cavity under the piston. The movable element is made without a hole and is provided with two protrusions of trapezoidal shape on the outer surface and one seat. The seat is located between the protrusions of trapezoidal shape.

EFFECT: increase in reliability of fixing of the movable element in the housing of the device, and improvement of quality of processing of the borehole due to improvement of the system of opening ports.

2 cl, 3 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention relates to compositions for wells treatment for use in oil industry. Composition for well treatment containing chemical for well treatment adsorbed using water-insoluble adsorbent, where composition is produced by the well treatment chemical deposition from liquid, at that the well treatment chemical is adsorbed on the water-insoluble adsorbent, and where the well treatment chemical is deposited upon metal salt presence. Well treatment liquid containing the above mentioned composition and carrying liquid. Method of the underground reservoir or wellbore treatment including the above mentioned well treatment liquid injection in the reservoir or wellbore. Method to monitor the well treatment chemical release in the wellbore including the above composition injection in the wellbore. Invention is developed in subclaims.

EFFECT: improved efficiency of treatment in environments with high pH.

38 cl, 3 dwg, 4 ex

FIELD: chemistry.

SUBSTANCE: invention relates to liquids for the hydraulic fracturing of subterranean formations in oil and gas extraction. The method of applying liquid for hydraulic fracturing in the formation of fracturing of subterranean formations includes the retardation of polymer splitting in the liquid for hydraulic fracturing at a temperature from 125 to 400°F, when the liquid for hydraulic fracturing contains a liquefier, by the combination of at least one radical acceptor with the liquid for hydraulic fracturing. The mixture for the application in the liquid for hydraulic fracturing contains a radical acceptor and a liquefier. The method of the hydraulic fracturing of subterranean formation includes the supply of the liquid for hydraulic fracturing, containing a propping means, a polymer and the liquefier, addition of the radical acceptor, supply of the liquid to a desired location in a subterranean formation to form at least one hydraulic fracturing, making it possible for the liquefier to split the polymer and reduce the viscosity of the liquid for hydraulic fracturing at a specified time or at a specified temperature. The invention is developed in dependent claims.

EFFECT: increase of viscosity control efficiency.

15 cl, 1 dwg, 1 ex

FIELD: oil-and-gas industry.

SUBSTANCE: group of inventions relates to methods of preparation and treatment for well stimulation. The method of preparation of branch holes includes drilling of multiple branch holes from a vertical well. A selective injection deflector with pass-through for tubing between each respective pair of branch holes is installed. Hydraulic fracturing of multiple branch holes within one completion run by means of consecutive isolation of branch holes from multiple branch holes and supply of hydraulic fracturing fluid medium to each consistently isolated branch hole during lowering are performed.

EFFECT: improvement of efficiency of hydraulic fracturing of branch holes without lifting of equipment.

9 cl, 37 dwg

FIELD: mining.

SUBSTANCE: device comprises a housing with a channel, elastic sealing elements mounted therein on it, between which a piston pair with the sealing rings is placed, and the retaining nut. The working chamber of the piston pair is connected with the housing channel, and in its cylinder a radial hole is made with the ability of communication with the working chamber of the piston pair when packing the well with elastic sealing elements and the additional compression of the elastic sealing elements when hydraulic fracturing pressure with self- locking of the isolated part of the well. The elastic sealing elements are made of soft material and reinforced with rigid elements with different elastic properties.

EFFECT: increase in the sealing capacity of the device and the elastic properties of the elastic sealing elements.

2 dwg

FIELD: mining.

SUBSTANCE: method comprises a test injection of fracturing fluid and a pack of fracturing fluid with proppant, correction of the fracturing project and carrying out the main fracturing process. At that in the high-permeability reservoirs having an absolute permeability of not less than 100 mD, the main process of hydraulic fracturing is carried out using standard working fluid flow rate of 2.2 m3/min to 4.0 m3/min. When pressing the proppant-gel mixture the stepwise reduction of flow rate is carried out with the reduction step in the range of 0.1 m3/min to 0.5 m3/min, but to the value of not less than 2.0 m3/min. The final concentration of proppant is set of not less than 800 kg/m3.

EFFECT: increase in efficiency of intensification of operation of the well by creating a wider and conducting crack in the bottom-hole area of the layer.

1 tbl

FIELD: oil and gas industry.

SUBSTANCE: method includes bottom hole back filling, test pumping of a breakdown agent and a pack of the breakdown agent with a proppant, correction of the breakdown project and completion of the primary breakdown process. For backfilling of the bottom hole they use proppant waste of hydraulic rupture completion. The waste is delivered to the bottom hole in portions by means of a sludge pump.

EFFECT: reduction of material consumption for hydraulic rupture.

1 ex

FIELD: oil-and-gas industry.

SUBSTANCE: oil field development method involves working fluid pumping in through the injection wells and formation products withdrawal through the retrieving wells. The oil field is developed with the established ratio of formation products withdrawal compensation through working fluid pumping in. The borehole zone is treated with acid in the injection wells. The oil field is developed with the newly established ratio of formation products withdrawal compensation through working fluid pumping in until approach of the displacement front, changed as the result of acid treatment, to the retrieving well. Hydrofracturing is performed in the retrieving well with withdrawal compensation recovered to the initial value after recovery of formation products water content changed as a result of hydrofracturing.

EFFECT: field oil yield increase.

1 ex

FIELD: oil and gas industry.

SUBSTANCE: method includes uptake of oil via production wells, pumping of a working fluid via injection wells, hydraulic fracture of a bed in the injection and production wells. A pool area is identified with the low bed pressure and the injection well with low injection capacity. Hydraulic fracture is carried out in the identified injection well. Development is carried out to increase the bed and bottom hole pressure in reacting production wells. Hydraulic fracturing is carried out in the production wells in series from a well with the lowest increase of the bed and bottom hole pressure to a well with the highest increase of the bed and bottom hole pressure. At the same time in the wells with a reservoir with high permeability they carry out a sparing hydraulic fracture, and in the wells with the low permeable clayey reservoir they carry out intense hydraulic fracture with the maximum length of the crack.

EFFECT: increased efficiency of the bed hydraulic fracture.

FIELD: oil and gas industry.

SUBSTANCE: method involves landing of tubing string with packer to a well, packer seating, hydraulic fracture liquid injection by the tubing string with packer to a low-permeable formation, hydraulic fracturing of the low-permeability formation with further fracture fixation by injection of liquid carrier with propping agent via the tubing string, pressure relief in the well. Before tubing string landing to the well, water-bearing interlayer interval of the low-permeable formation is perforated to form perforation holes. Then at the wellhead the tubing string is filled upwards from the bottom with a plug, lower hole rows, packer, upper hole rows and additional packer. Inside the tubing string, a mobile bushing with radial channels is inserted to seal lower hole rows of the tubing string tightly in initial position and connecting the tubing string via upper hole rows and perforation holes to the ware-bearing interlayer. A seat is installed inside the mobile bushing, the mobile bushing and the seat are fixated in initial position against the tubing string by a differential shear element. The tubing string is landed to the well, packer and additional packer are seated in the well so as to shot water-bearing interlayer off tightly at two sides, upper water0bearing interlayer is isolated by injection and flushing of water isolation composition via the tubing string through upper hole rows to the water-bearing interlayer through perforation holes under pressure twice lower than hydraulic fracture pressure of the formation, process break is made for solidification of the water isolation composition, then a ball is dropped to the tubing string from wellhead, and overpressure is formed in the tubing string. First the shear element is destroyed, and under impact of overpressure above the ball, mobile bushing is shifted down along the tubing string to a stop against the tubing string plug, overpressure increase in the tubing string is continued, and the shear element is destroyed again. The seat is brought down to a stop against the plug under impact of overpressure above the ball. Upper hole rows of the tubing string are shut off tightly by the mobile bushing, and lower hole rows are connected to the tubing string by radial channels of the mobile bushing.

EFFECT: improved efficiency of hydraulic fracturing.

2 dwg

FIELD: ceramics.

SUBSTANCE: invention relates to manufacture of molded ceramic materials for use as propping agent in production of liquid and gaseous fluids from bored wells. Method comprises briquetting and heat treatment of aluminosilicates kaolin at 1150-1250оС. Resulting mix is ground to average grain size 3-5 μm and loaded into granulator. Before granulation, 1.2-3.0% mineralizer and 5-10% plasticizer are added. Mix is moistened with dozed amount of organic binder and stirred to form granules. At the end of granulation, fired ground material for powdering granules is added in amount 1.2-3.0%. Granules are dried and screened to isolate desired fraction, which is subjected to final firing at 1370-1450оС for 30-60 min and then re-screened into commercial fractions.

EFFECT: enabled manufacture of granules having low loose density and high strength allowing their use at depths up to 14000 feet (4200 m).

3 cl, 1 dwg, 1 tbl, 3 ex

FIELD: oil and gas production.

SUBSTANCE: invention provides fluid comprising aqueous liquid and above-defined block copolymer, which is especially suitable within high-temperature ranges above 180оС. Viscosity of fluid is stable at high temperatures and fluid is capable of suspending and transporting proppants and nearly does not damage of formation and preserves its efficiency upon action of various chemical conditions.

EFFECT: improved performance characteristics.

32 cl, 6 tbl, 17 ex

FIELD: oil and gas extractive industry.

SUBSTANCE: method includes lowering and mounting tubing string with packer in a well. Fracturing liquid is pumped into tubing string with certain speed and pressure, and hydro-impacts are formed. Before fracturing liquid a deep secondary opening of high-productive bed portion is performed. Column of tubing pipes with tail piece and cone in lower part is performed. Resilient-viscous compound is pumped into well and pushed to position of formed cracks. Fracturing liquid is forced into tubing pipe, while at starting period - at increased speed. Hydraulic impacts are formed by stopping fracturing liquid flow from the surface, and through same well bed products are extracted.

EFFECT: higher oil yield.

1 ex, 4 dwg

FIELD: oil and gas extractive industry.

SUBSTANCE: according to accelerated variant, perforation of well-adjacent bed zone is performed by cased cumulative perforator. Adjustable pulse gas-dynamic bed fracturing is performed through apertures of perforator. It is provided with subsequent operation in given time of delay of main and additional gunpowder chambers. Thermal gas-chemical effect on well-adjacent zone of bed is provided for in given delay time of thermal gas-chemical chamber with charges. Implosion treatment is performed in given delay time of implosion chamber. Treatment is set by volume of implosion chamber and size of pass cross-section of flow aperture and/or group of apertures, connecting inner volumes of chambers.

EFFECT: higher efficiency.

12 cl, 3 dwg

FIELD: oil and gas extractive industry.

SUBSTANCE: method includes drilling long horizontal wells in bed and effecting on bed through them. Most of bed is covered by these wells. Along whole length of them explosive substance is placed to provide explosion temperature for length unit of well from 3500 to 1400 kcal/m and filling volume of horizontal wells by explosive substance from 5 to 20% during filling of remaining wells volume by liquid. After explosion, a packer is lowered into cased portion of wells.

EFFECT: higher efficiency.

3 cl, 1 tbl, 1 dwg

FIELD: oil and gas industry.

SUBSTANCE: method includes acidic treatment of bed, calculation of hardness decrease and pressure of rocks tearing and pressure for pressing working solution into bed, completion of well and the actual hydraulic tear. Pressure for pressing is determined from formula Pht=(2μ·Pm/(1-μ)+(1-3μ)·Pb/(1-μ), where Pht - rocks tear pressure, Pm - mountain pressure, Pb - bed pressure, μ - Poisson coefficient.

EFFECT: higher yields.

1 ex, 1 tbl

FIELD: oil and gas industry.

SUBSTANCE: method includes cyclic forcing of cooling mixture into well-adjacent zone of bed and its freezing-unfreezing with following cumulative perforation, while as components of cooling mixture the following reagents are used: water - 68.3 % mass; ammoniac - 19.2 % mass; saltpeter - 12.5 % mass.

EFFECT: higher productiveness.

1 tbl