Method of determining distance between fractures and formation of cracks in well using this method

FIELD: mining.

SUBSTANCE: invention relates to mining and can be used for determination of intervals between fractures in wells bringing hydrocarbon fluid. Method involves obtaining first fracture size, selected from first fracture smallest length or height, and second fracture expected size is selected from second fracture least expected length or expected height subject to formation. Approximate location of second fracture is determined based on first fracture mean arithmetic size percentage and second fracture size. Approximate location of third fracture is determined so that ratio of distances from first fracture and second fracture is approximately equal to first fracture size to second fracture size ratio. Then second fracture can be formed in well next to second fracture approximate location and third fracture can be formed next to third fracture approximate location.

EFFECT: technical result consists in improvement of hydrocarbon fluids production efficiency by simulating and creation of formation hydraulic fracturing fractures network.

22 cl, 2 dwg

 



 

Same patents:

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to information and computer engineering equipment and can be used to create arithmetic logic units for designing high-speed and efficient digital devices for summation and subtraction of numbers in a binary number system in direct codes. The device has a number input unit, a comparator unit, an adder unit, a larger number register unit, a summation-subtraction unit, a smaller number register unit, a result register unit and a control unit.

EFFECT: faster operation of the device and lower hardware costs.

12 dwg

FIELD: information technologies.

SUBSTANCE: device to convert and use polynom-based data comprises a processor. This processor is configured for identification of data, which is relevant for a set of one or more requests. At the same time the processor also realises generation of a vector of an information source, which indicates sources of information associated with data. Also the processor is configured for generation of a polynom on the basis of the vector of the source of information. Besides, the processor also realises factorisation of a polynom, for generation of multiple orthogonal signatures of data.

EFFECT: prevention of data loss, which is provided due to generation of characteristics of data signatures.

25 cl, 4 dwg

FIELD: information technology.

SUBSTANCE: system includes a simulation model, a monitoring server monitoring unit and a simulation manager. The simulation model of the monitoring server is provided for precise presentation of various client devices and corresponding connections thereof for transmitting data in an electronic network. The simulation manager of the monitoring server gathers various types of simulation parameters corresponding to the electronic network. The simulation manager then uses the simulation model and simulation parameters to perform network simulation, to identify and correct various types of problems associated with network performance.

EFFECT: more efficient network simulation for an electronic network by creating a group of client devices performing local storage of content elements in distributed form.

18 cl, 13 dwg

FIELD: mining.

SUBSTANCE: method includes stages, at which the following is carried out: data is collected from an exploratory hole, and analysis of data uncertainty is carried out. The exploratory hole is prepared for flow passage by means of at least one recovery action in the exploratory hole shaft. The initial speed of the hydrocarbon flow is identified from the exploratory hole shaft. The selected method of exploratory hole finishing is selected. The second speed of hydrocarbon flow is determined from the well shaft to identify increased amount of production as a result of the recovery action. In response to identification of the increased amount of production as a result of the recovery action, they assess results for the well shaft using a model of one shaft, and results are scaled to the deposit level.

EFFECT: determination of active reservoirs.

20 cl, 9 dwg

FIELD: information technologies.

SUBSTANCE: system to produce a probability model from a deterministic model comprises the following components: a unit to model a physiological system, by means of a verified deterministic model (VDM), besides, the VDM includes variables, which represent states of the physiological system; and a unit for data reception from the VDM and for generation of a probability model, by means of a machine learning algorithm (MLA); a unit to provide patient's data, by means of the verified deterministic model (VDM), besides, the VDM models a physiological system and includes variables, which represent states of the physiological system; a unit to receive data of a patient from the VDM and for generation of a probability model, by means of a machine learning algorithm (MLA), at the same time input variables are presented to the probability model, to provide for modelling variables.

EFFECT: possibility to produce more accurate values with the help of a probability model.

10 cl, 4 dwg

FIELD: physics, radio.

SUBSTANCE: invention is related to radio engineering and can be used to predict data in systems for different purposes. The method of predicting nonstationary time series, based on an autoregressive model of a moving average with minimum mean-square error additionally involves operations for recirculating input data by one reading, oversampling the initial process in a logarithmic time scale, finding the energy spectrum of the obtained signal, determining response corresponding to entropy of the sampling energy spectrum, calculating the maximum value of entropy responses, finding a prediction for realisation, which corresponds to the maximum entropy value, oversamping the prediction result in an exponential time scale.

EFFECT: high noise-immunity of the prediction process in conditions of additive noise and marked nonstationary nature of the predicted process.

2 cl, 3 dwg

FIELD: information technology.

SUBSTANCE: invention relates to information and computer engineering equipment and can be used for synthesis of arithmetic logic units for designing high-speed and efficient digital devices for summation and subtraction of numbers in a ternary number system in direct codes. The device has a number input and encryption unit, an adder unit, a first number register unit, a second number register unit, a result register unit and a control unit.

EFFECT: reduced hardware expenses, simple combinational circuit and simple algorithm of operation of the device.

18 dwg, 10 tbl

FIELD: printing industry.

SUBSTANCE: method includes the following stages: selection of a printed document; transformation of the document into colour space of the printing system; imitation of halftoning procedure; assessment of expendable materials consumption per dot; calculation of expendable materials amount necessary to complete the print job; calculation of expendable materials cost necessary to complete the print job; set-up of printing parameters or adjustment of the source document; addition of the print job into the print queue; updating the necessary quantity of expendable materials and paper required to complete the print queue; updating planning of the system maintenance; updating average quantity of expendable materials and paper; replenishment of expendable materials and paper inventory, if the inventory is not sufficient; printing the number of copies; measurement of actual consumption of expendable materials; correction of rated quantity of expendable materials consumption per dot.

EFFECT: higher accuracy of forecasting.

2 dwg

FIELD: information technology.

SUBSTANCE: method of determining the number of wells for drilling in a set of objects, wherein the objects are oil and/or gas deposits, in which first information is received, which gives a set of uncertainty variables for the said set of objects and which gives a functional relationship between first and second uncertainty variables; second information is received, which gives a set of solution variables; optimisation is performed, where optimisation involves performing a set of estimations of the global target function, wherein each estimation of the global target function includes steps for generating values for solution variables, and performing a set of iterations from a set of operations. The invention also discloses a computer-readable recording medium and a computer system which implement the method.

EFFECT: wider range of equipment.

18 cl, 14 dwg

FIELD: information technology.

SUBSTANCE: knapsack problem solving apparatus having a group of m counters 31…3m, a clock pulse generator 1, a first AND element 2, a group of m second AND elements 41…4m, a third AND element 16, a fourth group of AND elements 17, also has a group of m first 51…5m, second 61…6m and third 81…8m registers, m first 71…7m and second 91…9m multiplier units, a first 10 and a second 11 adder, a first comparator 12, a fourth register 13, a second comparator 14 and a fifth register 15.

EFFECT: possibility of simulating the process of filling a knapsack with different objects so that the total cost of the filled knapsack is maximum for limited total weight of the entire knapsack.

1 dwg

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

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