Creation method of low-premeability of screen in porous medium

FIELD: oil-and-gas production.

SUBSTANCE: it is implemented preparation of injection well in insulated area by path close to roof cladding configuration of insulated area of stratum. Then it is pumped into it solution of foam maker with following feeding of gas for foaming. It is defined minimal horizontal lateral dimension of screen from conditions of filtration through the screen of gas and/ or water considering pressure gradient at the boundaries of screen at the period equal to period maximal pumping into gas storage or maximal permissible withdrawal of gas from particular storage. Minimal vertical dimension if screen is considered equal to value which is not less than maximal dimension from roof of formation up to gas-water contact in the area of screen creation. In preference it is implemented injection well making, path of which is normal to vector of average speed of formation fluid in isolated area of stratum. Preferentially it is also implemented making of inclined and/or horizontal injection well.

EFFECT: reliability growth of operating characteristics of screen, reduction of foam former consumption and gas amount, used for foaming and consumptions for wells drilling.

3 cl, 3 tbl, 1 ex, 3 dwg

 

The invention relates to a method of creating a permeable screen in a porous medium in the insulated area of the reservoir during storage in underground gas storage in porous reservoirs, and in particular to methods restrict unwanted movement of fluids in porous media, and can be used in the oil and gas industry.

Operation of underground gas storage (UGS) in reservoirs significantly complicated due to the flow of gas outside the project hypsometric marks in zones and layers of the reservoir with abnormally high reservoir quality, and also due to premature water production wells in the selection of gas from underground storage facilities, what is happening:

- lack of full substitution in porous media water gas in the vicinity of the borehole when the last injection in reservoir storage and release of water from the tight, wet ones in the wellbore for subsequent withdrawal of gas from underground storage facilities;

- due to rise of water to the bottom of wells through lithological "window";

- due to the pressure drop in the reservoir in the vicinity of a production well and, as a consequence, the cone breakthroughs produced water from underlying aquifers;

- due to the massive introduction of produced water in the lawn is sennou area of reservoir storage in the presence of high permeability zones near the gas-contact (DDC).

To eliminate these complications, leading to reduced efficiency of operation of UGS wells and threatening the ecological state of the environment, create the in-situ deposition screens.

theoretical basis for the creation of the in-situ screens is the reduction of the relative permeability of the porous medium to the reservoir fluid and gas injection through wells in the area of the reservoir, subject isolation, screening of liquids of different nature - cement mortar, water-repellent agent, foams, emulsions, etc.

The most effective means for creating in-situ screens to isolate unwanted movement of the water and especially gas is the formation in a porous medium foam from the foam solution on the basis of surface-active substances (surfactants) and gas. According to the results of the laboratory studies described in the monograph (Operation of underground gas storages., Karimov F, M.: Nedra, 1981), the foam formed in the layer of foam solution and gas, is a nonequilibrium disperse system and, depending on the surfactant concentration in solution and the gas saturation of the porous medium, can be several orders of magnitude lower permeability of the porous medium, especially for gas.

There is a method of creating a screen by injection of a solution of the foaming agent in the chain of wells in the area of the proposed gas leak in the reservoir (US 3330352, 1967, US No. 3393738, 1968). According to this method in the mechanical mixing of the foaming solution and gas flow in the reservoir, subject isolation, in a porous medium foam which has insulating properties. The recommended concentration of surfactant in the foaming solution is from 0.001% to 10 wt.%. To improve the stability of the formed in the layer of foam in the foaming solution add the thickener. Thus the solution of the foaming agent is injected into the reservoir in an amount sufficient for the formation of a solid screen, the two portions, and the concentration of the surfactant in the first portion is from 1% to 10 wt.%, and the second is from 0.001% to 1 wt.%. This way peculiar to the following disadvantages: when the injection of the foaming solution into all wells of the chain to obtain an acceptable result, you need to upload very large volumes of solution. The injection of the foaming agents in the chain of wells with a constant flow of leads to increase reservoir pressure. To maintain a constant flow rate it is necessary to increase the discharge pressure, which is not always feasible, and reducing consumption increases the time of the creation of the screen in the reservoir.

There is a method of creating a screen in the reservoir at which the foamable solution with a surfactant concentration of 0.01-5 wt.% pumped into injection wells, cerebus is the handling (US No. 3306354, 1967 and US No. 3379260, 1968). When this relief well leave them open and pouring of liquids control the formation of a continuous barrier on the basis of the control of the surfactant concentration in the liquid.

Describes how to create a screen is more rational due to control excessive increase reservoir pressure and formation of a continuous barrier of foam solution due to the presence of discharge wells. However, this method also has the above disadvantages, in addition, it is also no guidelines for determining the optimum volume of foam solution and gas, needed to create the screen.

Closer to the described invention is a method of creating a foam screen (barrier) layer in underground gas storage (SU # 1385438, 1986). According to this invention, the foaming solution into the formation in the area of the proposed isolation of the gas flow is conducted through alternating pressure and a relief well. In the first stage, the solution is pumped into a series of injection wells alternating with discharge, until the foaming solution selected from the discharging well fluid, and the discharge flow rate of the wells exceed the injection capacity. After the appearance of the solution in the times wells injection wells stopped and the foam solution is injected into the discharge hole, moreover, the volume of solution injected in the second stage, is 2/3 of the volume of solution injected into the reservoir at the first stage.

The disadvantages of the method are the need of using a large number of wells high consumption of foaming agent and the amount of gas used for foaming to obtain a relatively reliable overlap the project area. In this known method does not address fully the issues of monitoring the reliability of the overlap of the insulated area, the spread of the screen outside at wells. In addition, this method does not allow to determine the volumes injected into wells gas needed to create a sustainable screen.

The objectives of this invention are:

- improving the reliability limits of movement of the gas volume to prevent gas leakage during storage in reservoirs within the calculated (design) hypsometric marks;

- determination of the volume of gas injected followed by a solution for a sustainable screen;

- intrusion prevention produced water into an artificial gas reservoir to extend the period waterless operation of underground gas storages (UGS).

The tasks accomplished by creating a permeable screen in the insulated area of the reservoir during storage g is for underground storage by posting injection wells, injection into her foaming solution with subsequent supply of gas for foaming, which according to the invention posting injection wells in the isolated zone is carried out on a trajectory similar to the configuration of the roof of the insulated zone, the minimum horizontal transverse size of the screen determine the terms and conditions by filtration through a screen of gas and/or water, taking into account the pressure gradient at the boundaries of the screen for a period equal to the period of maximum injection in gas storage or the maximum allowable gas extraction from this store, and the minimum vertical size of the screen is equal to the value component is not less than the maximum distance from the roof of the reservoir to the gas contact zone create screen.

Thus preferably are posting injection wells, the trajectory of which is normal to the vector average speed of formation fluids in the isolated formation zone.

Preferably, also, are posting inclined directional and/or horizontal injection wells.

Achievable technical result is to increase the reliability of the performance characteristics of the screen by increasing the continuity of the screen to reduce the consumption of foaming agent and the amount of gas used for foaming and costly drilling.

The described method is carried out as follows.

To create a permeable screen to define the area in which you want to create a screen (for example, on the periphery of reservoir storage or lithological "window"). Next, mark the location of the axes of the future of the screen and are posting (drilling) injection wells in the insulated area, the trajectory of which is similar to the configuration of the roof of the insulated zone and preferably normal to the vector average speed of formation fluids in the isolated zone. Thus are posting inclined directional and/or horizontal wells. Well grow and perforined in the interval of the insulated area.

Hold uploading a definite volume of foam solution in the well, after the solution is injected compressed gas in a quantity of in situ 3-5 volumes of pumped fluid.

Theoretical and computational basis for creating a permeable screens are empirical dependence of relative permeability, which have the following form (Karimov F Operation of underground gas storages, M.: Nedra, 1981 press, p.104):

fW(s, C)=0, when: 0,8<C≤1;

fg(s, C)=0, at: 0<s≤0,1;

a=3,5+12ln[1+(100)1,5]where

s is the saturation is aristoi environment, the dimensionless quantity;

C - concentration of foaming surfactant wt.%;

fW- relative permeability of the porous medium of the liquid, dimensionless quantity;

fg- relative permeability of the porous medium gas, dimensionless quantity.

As foaming agents use solutions of various surfactants. It is preferable to use solution synergistic surfactant compositions, consisting of a main foaming nonionic surfactants and auxiliary anionic surfactant in the formation water, such as composition, consisting of a main foaming nonionic surfactants, for example ethoxylated alkylphenol brand OP-7 or OP-10, and auxiliary anionic surfactant in the form of a sulfite-alcohol stillage (PRS). In the preparation of the solution is important is the use of produced water in the horizon, where it is planned to create the screen. This ensures maximum preservation of the strength and structure of the reservoir.

It is known that the main factor influencing the loss of surfactant in the filtration flow of foam solution in the reservoir is adsorption. The degree of adsorption depends on the individual properties of surfactants and minerals composing the rock. In this regard, the concentration of surfactant in the foaming solution needed to create effective the top of the screen, make with regard to the adsorption properties of the porous medium and surfactant (table 1). The presence in the composition of anionic surfactant PRS due to the best of its adsorption on the surface of rocks (Hydrodynamics and filtering of single-phase and multiphase flows, proceedings of the GUBKIN state enterprise named after Gubkin, M.: Nedra, 1972, p.76) provides a synergistic effect - reduction of loss of the primary surfactant to 60 wt.%. In synergistic compositions used in this case, it is preferable to use the surfactant in the ratio of 1:1 by weight. The concentration of the composition in the reservoir water is 0.6%-1 wt.%.

Table 1
A number of preferred applicability of surfactants to create screens depending on the salinity of the reservoir water
Substitution of surfactant solution into the formation water hydrocarbonate sodium mineralization M=0.1% gas.The critical concentration, C*, wt.%Substitution of surfactant solution into the formation water potassium chloride type with mineralization M=15% gas.The critical concentration C*, wt.%
OP THK0,3OP THK0,5
About the -7 0,3OP THK0,5
Arcopol0,3OP-70,5
Prevotsell WON0,3Arcopol0,5
Prevotsell WOF1000,3Tergitol0,5
OP THK, Sinterol AFM-120,3Prevotsell WOF1000,5
Tergitol0,3Lissabon0,5
Prevotsell SW0,3Prevotsell SW0,5
Prevotsell FO0,3Prevotsell FO0,5
Prevotsell FPS0,3Prevotsell FPS0,5
PRS1,0PRS2,5

The experimental is stalnye values of the front gas saturation and value calculated using formulas (1) and (2)shown in figure 1.

From the presented data it follows that education in a porous medium pen nonequilibrium disperse systems provides increased gas saturation already at the displacement front to 0.7 to 0.8. This reduces permeability for water. Therefore, nonequilibrium dispersed system can effectively be used as a shielding gas volume flow beyond a certain isohypse, and to escape the invasion of water into the gas-saturated volume of storage.

In the described invention improve the reliability of the overlap of the project area and reducing the cost of creating the in-situ screen is essential.

The main option screen, determining the efficiency of its functioning, is the width of the screen - the minimum horizontal transverse size of the screen. The screen width is determined proceeding from the fact that the particle gas or water must be filtered through the screen at time T (equal parts cycle injection or sampling), which is technologically justified from the condition reliable isolation of the gas flows outside the facility in the period of maximum gas injection or intrusion of the regional water gas-bearing region in the period of maximum allowable gas during cyclic operation of the UGS. Depending on the geo is logicheskih and technological features of the storage time T is approximately 90 days.

The width of the screen, i.e. the required minimum transverse size l, for reliable isolation of the gas volume to define filter conditions, taking into account the pressure gradient at the boundaries of the screen from the expression:

where P1and R2pressure value at the boundaries of the screen, MPa; kg- coefficient phase gas permeability, m2; m - porosity, fraction; µgthe viscosity of the gas in situ, MPa·S.

For a particle of water filtered through the screen in the gas-bearing zone, the required width of the screen is determined from the expression:

here kin- coefficient phase permeability for water, m2;

µin- viscosity of reservoir water reservoir, MPa·S.

In these formulas, setting the necessary time shielding gas volume or invading brine water, determine the width of the screen.

Calculations performed using the main field characteristics of the underground storage facilities "Gazprom", show that the maximum width of the screen for the isolation of the gas is 19-20 m, and to isolate the invading water enough screen width at 9-10 PM Detailed calculation of the width of the screen is shown in the example.

The minimum vertical size of the screen h (thickness) is equal to the value component is not less than max the minimum distance from the roof of the reservoir to the gas contact in the insulated area, providing design volume UGS.

The amount of solution required to create a screen length L, width l and thickness h, is determined from the following expression:

where L is the length of the screen, m;

m is the porosity of the shares;

s - front saturation, dimensionless quantity;

- coefficient Wicke, a dimensionless quantity;

rscreenequivalent radius of the horizontal screen depending on the screen width l, m and its thickness h, m, is determined from the following expression:

Frontline saturation s is determined depending on the salinity of the reservoir water and the concentration of the graphs shown in figure 1.

The coefficient Wicca is determined by the expression σ2=/(S+αmax),

where, αmaxaccordingly, the initial concentration of surfactant in the solution and the maximum adsorption of the surfactant on the surface of the reservoir, wt.%.

Table 2 shows the values of coefficient Wicca for solutions of ethoxylated ALKYLPHENOLS in layers of different porosity.

0.59
Table 2
OP SNHCC, wt.%0.10.2 0.30.40.50.60.70.80.91
porous mediumm=0.150.200.310.400.480.530.580.610.640.670.69
m=0.200.260.390.490.560.620.660.690.720.740.76
m=0.250.320.460.560.630.680.720.750.770.790.81
WOF-100C wt.%0.10.20.30.40.50.60.70.80.91
porous mediumm=0.150.110.160.210.250.290.320.350.380.400.43
m=0.200.150.220.270.320.360.400.430.460.490.52
m=0.250.190.270.330.380.430.470.500.530.56
WONC, wt.%0.10.20.30.40.50.60.70.80.91
porous mediumm=0.150.080.130.160.190.230.260.290.320.350.37
m=0.200.110.170.220.250.290.330.370.400.430.46
m=0.250.150.210.270.310.360.40 0.470.500.53

Compounding the PRS with a concentration of 0.3% by weight reduces the concentration value of the primary surfactant is 40%.

The volume of gas that must be uploaded after the solution under normal conditions is

where

Vrest.- the volume of solution, m3,

PPL- reservoir pressure, MPa,

PATM- atmospheric pressure, MPa.

The amount of primary surfactant in the foaming solution, Mcore(kg), is determined from the expression:

where

With0the concentration of the primary surfactant, wt.%

Vrest.- estimated volume of foam solution, m3.

The number of synergistic components in the foaming solution, Msinner.(kg), is determined from the expression:

where

WithWiththe concentration of synergistic components, wt.%

Vrest.- estimated volume of foam solution, m3.

Figure 1 shows the values of the front saturation during replacement of surfactant solutions by gas. Legend: M=1% - substitution solutions of surfactants in the formation water hydrocarbonate-sodium type with a salinity of 1% by weight; M=15% - substitution solutions of surfactants in the formation water potassium chloride is IPA with a salinity of 15% by mass.

Figure 2 presents a view of UGS in the plan indicating the location of the screen on the periphery of the UGS, the contours of GVK, operational and observation wells and isohypse providing design volume UGS, L is the calculated length of the screen.

Figure 3 presents the geological profile UGS indicating roof geological traps, GVK on isohypse providing design volume UGS, and screen location on the periphery of UGS on section a-a of figure 2. Legend: l - screen width, h is the thickness of the screen.

EXAMPLE

In the insulated area of the reservoir to produce the inclined drilling directional and horizontal injection wells, the trajectory of which is similar to the configuration of the roof of the insulated zone and normal to the vector average speed of formation fluids in the isolated zone. Well grow and perforined in the interval of the insulated area.

Determine: the size of the screen, solution volume and weight of surfactant required to create a screen.

The source data

The length of the shielded zone of the mould, lithological window, peripheral abnormally high permeability zone) L=300 m

The depth of the stratum H=1000 m

Produced water potassium chloride type Sulino with General mineralization of M=150 g/l

Pressure changes within 8-10 MPa, i.e. the maximum load on the screen is 2 MPa.

The thickness of the screen in the insulated area h=10m.

The permeability k=0.65·10-12m2.

Porosity m=0,25.

The viscosity of the gas of 0.014 MPa·s.

The viscosity of the reservoir water of 1.8 MPa·s.

1) from table 1 select the main foaming surfactants, such as OP-10, with a critical concentration above 0.5% and add synergistic surfactant component is 0.5% of the PRS.

2) curves, shown in figure 1, determine the value of front-line saturation s, depending on the adopted critical concentration, in this case amounting to s=0,7.

3) By the formulas (1) and (2) determine the relative permeability to gas and liquid at s=0,7:

k*g=0,0001, k*W=0,003, therefore,

kg=0,0001·0,65·10-12m2and kW=0,003·0,65·10-12m2.

4) Calculate the design width (transverse dimension) of the screen l.

The transverse size of the screen l in synclinal mulde (or lithological window, or in the peripheral zone UGS) is determined from the condition of passing the gas through the screen at time T for the gas injection and regional or bottom water during the period of maximum extraction of gas from underground storage facilities.

The value of l is determined from the expression (3), assuming that the gas filtration is established and the section of the screen constantly:

where P1and R2pressure value at the boundaries of the screen, MPa; kg- coefficient phase of gastronic is emote, m2; m - porosity, fraction; µ is the gas viscosity at reservoir conditions, MPa·S.

For a particle of water filtered through the screen in the gas-bearing zone, according to the formula (4) determine the minimum width of the screen l under the same conditions:

Thus, the width of the screen, created to prevent the flow of gas has a double stock for isolation of produced water.

By the formula (6) in a given thickness h=10 m and the calculated width of the screen 20 m determine the radius of the horizontal screen, equal 10,63 m

By the formula (5) determine the required volume of solution. The latter is an amount equal to 20516 m3. According to the formula (8) determine the mass of foaming agent required to create a screen. The specified value is equal to 102 tonnes. When using a 1% surfactant solution, respectively, received 14232 m3and 142 tons. According to the formula (7) determine the necessary amount of gas to create a sustainable screen.

Table 3 presents the comparative results of the calculation of consumption of materials in the creation of the deposition of the screen by a known method and the described invention.

Table 3
The known methodPR is duhaime technical solution
№ p/pThe number of wells, unitsThe volume of solution, V, m3Weight surfactant, tonsGas volume, mln,
nm3
The number of wells, unitsThe volume of solution, V, m3Weight surfactant, tonsThe volume of gas, million
nm3
137500037530,01205161028,21
236833334227,31142321425,69

From the Table 3 data shows that when carrying out the method according to the invention, when the screen width is 20 m, the solution flow rate is from 14232 to 20516 m3, foaming agent from 102 to 142 tons, whereas in the known solution for the same width of the screen flow of the solution is from 68333 to 75,000 m3consumption inoob is isolates ranges from 342 to 375 tons. The gas flow rate as the flow rate of the solution and the surfactant according to the invention, a multiple lower than in the known solutions.

Thus, the method according to the invention allows to reduce the consumption of foaming agent and the amount of gas used for foaming, and also significantly reduce the cost of drilling due to the reduction of the number of wells to one.

1. A method of creating a permeable screen in a porous medium in the isolated zone of the formation during storage of gas in underground storage by posting injection wells, injection into her foaming solution with subsequent supply of gas for pricing, characterized in that the wiring injection wells in the isolated zone is carried out on a trajectory similar to the configuration of the roof of the insulated zone, the minimum horizontal transverse size of the screen determine the terms and conditions by filtration through a screen of gas and/or water, taking into account the pressure gradient at the boundaries of the screen for a period equal to the period of maximum injection in gas storage or the maximum allowable gas extraction from this store and the minimum vertical size of the screen is equal to the value component is not less than the maximum distance from the roof of the reservoir to the gas contact zone creation screen.

2. The method according to claim 1, distinguishing the I, what are posting injection wells, the trajectory of which is normal to the vector average speed of formation fluids in the isolated formation zone.

3. The method according to claim 1, characterized in that are posting inclined directional and/or horizontal injection wells.



 

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FIELD: oil and gas industry.

SUBSTANCE: invention refers to methods of restriction of bottom water and annulus overflows in production wells. The method consists in pumping water and solution of sodium naphthenate into a well; then the procedure is repeated not less, than 3 times; also cement solution is pumped with addition of sodium naphthenate; while initially solution of sodium naphthenate and water is pumped and then additionally alumo-chloride is pumped. Volume ratio of sodium naphthenate and alumo-chloride can be 4:1.

EFFECT: upgraded efficiency of method due to effect of hydrophobisation of porous space, increased amount of forming cementing material, thermo-stabilisation of this material under conditions of high temperatures of bed (above 80°C) and creating more reliable isolation screen.

2 cl, 2 tbl, 3 dwg

FIELD: transportation.

SUBSTANCE: transporting pipe (1) has double-layer body (2) of pipe, which, at the pipe end (5) arranged at the inlet side and at pipe end (6) arranged at the outlet side, accordingly comprises a connection belt (7, 8). In the area of connection belt (7) arranged at the inlet side there are the first worn-out ring (9) and the second worn-out ring (10) arranged one after another in longitudinal direction of the pipe body (2). The second worn-out ring (10) arranged inside connection belt has length (L), which is more than or equal to half of inner diametre (ID) of pipe body (2).

EFFECT: reduced wear in the inlet area of transporting pipe and increased service life of transporting pipe (1).

1 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: increase of payload of underground reservoir is achieved during operation cycles. Gas is pumped into an underground reservoir through annular space of casing and external flow strings of well and simultaneously fresh water is supplied via annular space of the central and external flow strings. Water is supplied into the underground reservoir till gas-brain interface is achieved at the level of a shoe of the external flow string, further gas is pumped into the underground reservoir and brine is withdrawn to surface via the central flow string. Stored gas is withdrawn via annular space of the casing and external flow strings with simultaneous supply of water through the central flow string till gas-brine interface achieves mark of upper boundary of the underground reservoir.

EFFECT: increased efficiency of raising payload volume of underground reservoirs intended for compressed gas storage.

5 dwg

FIELD: oil-and-gas production.

SUBSTANCE: device contains branches of active and passive gas flows, nozzle, receiving chamber, confuser, mixing chamber with diffusion cell and annular space, formed between its chamber and its casing. Branch of active flow of gas with nozzle is installed with ability of movement in casing of receiving chamber and it is fixed in movable supports, one of which is installed in receiving chamber and other in shell with flange, connected to pipeline of active gas. Branch of passive gas flow is fixed on casing of receiving chamber under angle 45-60° to direction of movement of active flow gas and at a distance from inlet into mixing chamber not less than seven passage diametres of flows section between casing of receiving chamber and branch of active flow gas. Casing of chamber it is outfitted by choke for removing and feeding of heat-carrying medium in annular space of mixing chamber, encapsulated by sealing element.

EFFECT: creation of optimal conditions of flow of gas flows, providing ability of regulation of device properties.

3 cl, 2 dwg

FIELD: textiles, paper.

SUBSTANCE: method for feeding of cellulose fibrous material into vessel for high pressure treatment includes the following stages: injection of low pressure fibrous material flow into high pressure dislocating device; discharge of high pressure fibrous material flow from dislocating device to pipeline, which communicates to treatment vessel via fluid medium; discharge of low pressure fluid medium and fibrous material flow from dislocating device; injection of discharged low pressure flow further downstream dislocating device; merging of injected low pressure discharged flow with high pressure discharged flow.

EFFECT: invention provides for reduction of chips losses on its way to treatment equipment.

5 cl, 2 dwg

FIELD: handling of materials.

SUBSTANCE: proposed system comprises cargo feed conveyor (1), measuring complex (2) to determine cargo requisitions, overall dimensions and weight, loading conveyor (3), RH (4) and LH (5) driven lock doors with their one end fitted on vertical shaft and arranged in loading conveyor side guard opening to turn across loading conveyor belt, and RH (6) and LH (7) driven chain plate cargo elevator-accumulator. The unit comprises also discharge conveyor (8) and pushers to transfer cargoes from plate of appropriate elevator-accumulator on to discharge conveyor (8). It includes also guide skids to lock empty conveyor (12) with opened doors before loading, robot-manipulator (13), and control system (15) to ensure loading cargoes into container with due allowance for container load capacity tolerances and those for height of loaded container center of gravity.

EFFECT: expanded performances, compliance with container weight and size tolerances.

6 cl, 6 dwg

FIELD: machine building.

SUBSTANCE: device contains rolling platform, provided for feeding of products longitudinal into receiving station, tray, located at some distance in transverse location from receiving terminal and implemented with ability of receiving and collecting in the form of packet. Device contains layer, located between receiving terminal and tray and preliminary layer, located between layer and receiving terminal, containing top and bottom fingers for manipulation in cycle of preliminary layer of selected layers of products into sub-packets and transfer of sub-packets on mope pole of layer, herewith layer stacks sub-packets into tray. Device contains conveying system for transfer in transverse location of product from receiving terminal into preliminary layer, implemented with ability of combined action with conveying system. Method is in binding of iron products, in which there are fed products longitudinal into receiving terminal, there are moved products transversal from receiving terminal into preliminary layer, allowing top and bottom fingers, it is implemented work by mentioned fingers for collection of multitude of layers into sub-packets and transfer of sub-packets to layer and it is implemented work of layer for transfer of sub-packets into tray for collection in packets.

EFFECT: productivity boosting of binding system of long products.

5 cl, 16 dwg

FIELD: material handling.

SUBSTANCE: proposed device comprises cylindrical housing (1) with inlet (2) and outlet (14) branch pipes and vertical drive shaft (4) supporting auger (3) and rotor (9) with vanes (11) rigidly fitted thereon. Fixed cylindrical insert (6) with cutout (8) in insert lower part, made opposite the outlet branch pipe, is mounted aligned with aforesaid housing. Note here that cutout height equals that of the rotor. Said cylindrical cutout accommodates fixed plane (7) inclined to said cutout at the angle exceeding that of external friction of carried loose material. Aforesaid auger is mounted in inlet branch pipe.

EFFECT: operation in pneumatic transport unit at high air pressure and reduced drag.

2 dwg

FIELD: material handling.

SUBSTANCE: proposed device comprises cylindrical housing (1) with inlet (2) and outlet (14) branch pipes and vertical drive shaft (4) supporting auger (3) and rotor (9) with vanes (11) rigidly fitted thereon. Fixed cylindrical insert (6) with cutout (8) in insert lower part, made opposite the outlet branch pipe, is mounted aligned with aforesaid housing. Note here that cutout height equals that of the rotor. Said cylindrical cutout accommodates fixed plane (7) inclined to said cutout at the angle exceeding that of external friction of carried loose material. Aforesaid auger is mounted in inlet branch pipe.

EFFECT: operation in pneumatic transport unit at high air pressure and reduced drag.

2 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to handling breakbulk cargo with its shape approximating to parallelepiped with approximately equal height, for example, parcels, boxes with letter correspondence etc., and can be used in automatic or manual loading of cargoes in containers. In compliance with this invention, in determining cargo position in container sequence of cargo transfer into loading device is recorded and container overall sizes and capacity are measured as well as cargo area Sc=lc·mc and cargo shape factor Kcs=lc/mc, where lc and mc are cargo length and width, respectively. Prior to feeding into loading device, every cargo is ranged and assigned order number 1, 2,…n, in compliance with Sc value decreasing. If two cargoes feature equal Sc, then smaller number is assigned to cargo with greater Kcs, but if cargoes feature equal Cc and Kcs, then smaller number is assigned to cargo with larger weight. If cargoes feature equal Sc, Kcs and weight, then smaller number is assigned to that cargo which enters loading devices earlier. L>lc, M>mc and H>hc, are continuously monitored, where hc is cargo length, L, M, H are length, width and height of container body, as well as total weight of cargoes laid in container.

EFFECT: dense arrangement of cargo in container to facilitate its filling.

2 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention related to oil-and-gas production and can be used for construction and operation gas underground storages (GUS) on depleted oil and oil and gas reservoirs basis. Method includes pumping gas into storage and its withdrawal throughout wells. Further during gas into bottomhole, inject at least for one well GUS composition, consisting form oil soluble demulsifier and depressor, used in mass ration from 5:1 up to 1:5. Mentioned above composition injected in quantity from 0.02 to 0.2% mass, of reservoir fluid oil phase, extracted incidentally with gas.

EFFECT: increase depleted field porous volume use, increase of hydrocarbons production rate, lift coefficient of efficiency and GUS reliability increase.

2 tbl, 1 ex, 1 dwg

FIELD: oil and gas extractive industry.

SUBSTANCE: method includes performing a test pumping of liquid waste into absorbing well before operational pumping, while changing flow step-by-step. From equation of absorption base hydrodynamic parameters are determined for calculation of predicted coefficients of operation characteristics of absorbing well and reserve well. During operational pumping of liquid waste together with thermometry along absorbing well shaft, registration of actual pressures and flow on pump devices, actual pressures on mouth in tubing pipes of absorbing well, actual pressures on face are additionally registered in absorbing well as well as pressures on mouth in behind-pipe space, actual loss at mouth in behind-pipe space, actual loss of waste on mouth, actual positions of face well, upper and lower limits of absorption range from well mouth. In reserve well actual pressures on face are registered, as well as actual positions of liquid level from reserve well mouth, upper and lower limits of absorption range. Prediction coefficients are compared for operation characteristics of absorbing well and reserve well to actual coefficients. 9 conditions of hydrodynamic bed conditions at reserve well and absorbing well are considered during pumping of waste. Specific actions of operator on each condition are described.

EFFECT: higher reliability and trustworthiness.

1 ex

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