Test bench for evaluation of oil and gas yield of rock samples
FIELD: oil and gas production.
SUBSTANCE: test bench consists of rigid frame including vertical rods attached to upper and lower cross bars, of case for core sample holder equipped with upper and lower covers, of upper and lower puncheons, ends of which have channels for flow of fluid in axial and radial directions, and of vibration exciter of non-harmonic electro-magnetic oscillations (EMO) of different pulses in each two neighbour time half-period. A working cylinder with a piston is installed inside one of the cross bars. A stop installed between the upper movable puncheon and the piston, a model of analysed oil reservoir (MSOR) and the lower stationary puncheon function as a wave conductor of EMO. The wave conductor is electrically disconnected from the case of the core sample holder. Also the case of the core sample holder includes a circular cavity enveloping the MSOR. A hollow polyhedron is positioned inside the circular cavity on a lower cover of the core sample holder; electric dipoles inserted one into another are arranged on each of internal facets of the polyhedron parallel to vertical axis of the MSOR. The dipoles are connected with an EMO mode unit via electric inputs installed in the lower cover of the core sample holder.
EFFECT: increased oil and gas yield due to generation of additional factor effecting oil ions constituting residual oil in analysed samples.
4 cl, 6 dwg
The invention relates to the oil and mining industry and can be used for laboratory study of the influence of non-harmonic, electromagnetic fluctuations in the residual neftegazonosnosti rocks respective fields in terms of approaching formation.
Known stand to determine vodonagrevatel of rock samples and the vibration exciter to stand determining vodonagrevatel rock samples (A.S. SU # A, EV 49/00)containing a rigid frame housing kindergaten in the form of a movable coupling, sealed covers, piston, punches, focus, which is further provided with a vibration exciter spatial razniewski fluctuations, installed between the upper punch and focus. The specified vibration exciter includes a hollow cylindrical housing with exhaust channels in the cavity of which is placed a movable piston with distribution channels, which is further provided with an eccentric weight, with respect to distribution channels, turned to the opposite ends of the piston, taken from different angles to its longitudinal axis, have different lengths and are located on the opposite side of the unbalance. The test stand has shown its effectiveness due to the formation of wiretransfer skeleton of the porous medium when the mechanical resonance is annoeullin fluctuations in every two adjacent half time. The disadvantages of this technical solution should include limited functionality, in particular, is known for the stand does not allow to study the influence of electromagnetic influence on Neftegazodobycha.
Object of the invention is to enhance the functionality of the stand to determine neftegazodobychi rock samples.
The technical result of the invention is to provide an additional driving force acting on the ions of the oil components of the residual oil in the samples, in the form of a resonant electromagnetic nonharmonic oscillations and study on this basis, the influence of the processes of electromagnetic impact on improving neftegazodobychi.
This technical result is achieved due to the fact that in the stand to determine neftegazodobychi rock samples containing a rigid frame including a vertical rod connected with the upper and lower arms, the body of kindergaten equipped with top and bottom plates, placed inside one of the traverse working cylinder with a piston, the upper and lower punches, the ends of which are made conductive in the radial and axial directions of the liquid channels, the vibration exciter nonharmonic oscillations, according to the invention the specified vibration exciter is designed as a vibration exciter power is magnitnykh fluctuations, razniewski in every two adjacent time half period, the waveguide of these electromagnetic waves are the focus, installed between the upper movable punch and a piston mounted in the upper traverse, the model studied oil reservoir and the lower stationary punch, with the specified waveguide electrically divided from the body of kindergaten, the output of the upper movable punch pipeline is connected with the input has a level sensor oil traps for the displaced oil, and the output of the specified trap is connected by another pipe to the input of the lower punch through the shutoff valve, one-way check valve and the pump constant direction, the housing kindergaten includes a ring cavity cover the specified researched model of oil reservoir, inside this cavity based on the lower cover of kindergaten is hollow polyhedron, each of the inner faces of which are parallel to the vertical axis of the model studied oil reservoir placed in pairs, nested into each other electric dipoles, the dipoles installed through the bottom cover of kindergaten the electrical sensors associated with the block job mode electromagnetic waves.
In addition, the stand further comprises an electric dipole located in pleskot is, perpendicular to the vertical axis of the model oil reservoir.
The claimed technical result is achieved by the fact that the power set of electromagnetic waves is made as a block razniewski in every two adjacent time half period of the resonance of electromagnetic waves that create the driving force of the ions of residual oil model oil reservoir.
The block job mode electromagnetic waves includes a software block containing personal computer, the unit current assignment, arithmetic and logic unit, outputs the specified computer are connected with a control unit frequency and unit of the phase control, the output control unit frequency associated with the input of the control pulse meter, the other input of which is connected with the output of the quartz resonator, and the output from the generator input power signals, the outputs of the phase control are connected with the inputs of the amplifiers current, connected in series with the respective power amplifiers, power (third) inputs of which are connected with the generator output power signals, the input unit current reference the software block is associated with a level sensor oil located in the trap for oil, each of the amplifiers associated with the respective pair of nested into each other electric dipoles, the currents i II' in the outer and in the inner dipoles, accordingly, in the opposite direction and are regulated in proportion as i/i'=1,5÷3, in each of the outer dipole currents i are equal and the currents i' in each of the internal dipoles are equal.
Figure 1 presents a General view of the stand according to the invention, a longitudinal section, figure 2 is a hydraulic diagram illustrating the operation of the device according to the invention; figure 3 is a bottom punch placed in an electric dipoles, figure 4 is the same, top view; figure 5 is a structural diagram of block job mode electromagnetic waves; figure 6 is a circuit diagram of a power amplifier included in the block job mode electromagnetic waves.
Stand to determine neftegazodobychi rock samples according to the invention (figure 1) contains a stiffening frame that includes a lower yoke 1, the upper yoke 2 attached to the working cylinder 3 and a piston 4, a rod 5, a fastening beams 1 and 2 by using a scarf joint in the horizontal plane, the housing 6 of kindergaten made side channel 7 input pressure working agent (industrial or transformer oil). The cylinder 3 is provided with a channel 7' to create axial pressure on the samples of rocks. In the axial channel of the housing 6 is placed a sleeve 8 made of elastic material, Kotor is its annular projections at the edges associated with respective annular projections of the upper cap 9 and the lower cover 10 of the body 6, the remaining cylindrical surface of which is associated with the cylindrical surface of the axial channel of the housing 6 and ferrules 11. The outer cylindrical surface of the sleeve 8 is associated with the inner cylindrical surface of the sleeve 12 made of a dielectric material and air through the longitudinal Windows in the side wall. The stand also includes upper and lower punches 13 and 14 with nozzles for connection of the piping of the hydraulic system, the ring terminal 15 for measuring the electrical resistance of the test environment, the nuts 16 for preload ring terminals 15, the stop 17 with an opening 18, the lid lock 19, the dielectric spacer 20 ring 21 ring 22 with internal thread, the spacer device 23 in the form of a sleeve with openings 24 with the possibility of contact with the upper end of the annular sleeve 25, which is coupled to its lower edge with the upper edge of the annular sleeve 26, which is coupled with the upper edge of the dielectric sleeve 27. Caps 9 and 10 of the body 6 is equipped with a butterfly valve 28 and the tabs 29. Inside the annular chamber of the body 6 is placed a hollow polyhedron, such as a tetrahedron, faces 30 which is made with a through longitudinal openings 31. Face 30 of the specified tetrahedron inclined to the vertical plane passing through the vertical axis of the device, at an angle of 45°, as shown in figure 1. The gr is Nyah 30 is placed and fixed concentrically arranged in pairs nested in each other) electric dipoles (frame), the outer 32 and inner (with respect to the outer dipoles) 33. Electric dipoles 32, 33 using a multichannel electrical sensors 34 (multichannel electrical sensors presented in the book: Cycles DS. Technique physico-chemical studies at high and ultrahigh pressures. M., "Chemistry", 1976, s.431, str, RES) associated with the block job mode electromagnetic waves (figure 5)radiated by the dipoles 32, 33, and generates a driving force on the ions of residual oil in the studied model 35 of the reservoir.
Using these electric dipoles 32, 33, placed on the inner surface of the faces of the tetrahedron 30, is created acting on the ions of oil a longitudinal driving force. Radial driving force acting on the ions of oil, is created using a pair of electric dipoles 32, 33, placed additionally in the design of the lower punch 14 (Fig 3, 4). If the plane of the placement of the loops dipoles 32, 33 is located near the input end of the investigated sample model 35 seam, perpendicular to its axis is provided by the shift direction to the ions of oil radially to the longitudinal direction. Placing these dipoles 32', 33' outside the model layer 35 on the annular disc insulator supported on the upper edge of the cover 10.
Model 35 of the reservoir, mainly present in the form of a composite column of rock samples. Between samples, for example the components of the model 35 of the reservoir, for better contact between their pore spaces place a strip 36 of filter paper soaked in an aqueous NaCl solution.
The bottom edge of the punch 13 is connected with the top edge of the disk 37 is made therein interconnected annular, radial and axial channels. The upper edge of the lower punch 14 with an axial channel also has the same channels as the disc 37. Between the disc 37 and the punch 14 set model 35 of the reservoir. Possible that the channels specified in the disk 37 is made at the end of the plug 13, as is done in the plug 14. Stiffening frame kindergaten Assembly (figure 1) is placed on a horizontal stand 38 of dielectric material to electrically divide the housing 6 of kindergaten frame and the waveguide electromagnetic waves generated by emphasis (pos.17, 18, 19), the upper punch 13, a ROM 37, a model of the reservoir 35, the lower punch 14. The nozzles of the plungers 13, 14 (Fig.1-2) through pipes 39, 40 together with digital gauges 41, a hook 42 for displaced oil, reverse one-way valve 43, shut-off valves 44 and 45, 45', the bypass pipe 46, an adjustable liquid pump 47 constant direction associated with the above waveguide for the formation of the annular channel of the fluid flow. The valve 44 of the trap 42 is designed to release air from smarter the bathroom hydraulic system when pumping fluids or when connecting the vacuum pump, which is not shown in figure 2, and to release the accumulated oil from the trap 42 when closed and valves 45, 45' and open valve 44. Valves 45' and the bypass pipe 46 are designed to create a uniformly supplied interstitial pressure p1=p2the fittings of the punches when the valves 45' bypass pipe 46 are open. If the valves 45' are closed, the circuit (figure 2) is intended for carrying out the displacement of oil from a composite column of rock samples (35, 36) through the open valve 45 and the reverse one-way valve 43. It should be noted that all shut-off valves 44, 45, 45' can be replaced-controlled solenoid valves, secure, reliable filters and managed from a PC program.
Block set modes of electromagnetic oscillations (figure 5) dipoles 32, 33, razniewski in every two adjacent time half period, includes the program block (PB) 48 containing a personal computer (PC) 49 unit current assignment (BST) 50, an arithmetic logic unit (ALU) 51. The outputs of the computer 49 is connected with the control unit frequency (BUTCH) 52 and the device phase management (UFA) 53. The output control unit frequency (BUTCH) 52 is connected to the input of the controlled pulse counter (WUXI) 55, the other input of which is connected with the output of the quartz resonator (CR) 54 to generate a desired frequency, for example, f1=100 MHz, and the output from the speed generator power signals (HMS) 56. The outputs of the device 53 phase control (UFA) are connected with the inputs of the amplifiers current (CA1) 57, (CA2) 58, (CA3) 59, (CA4) 60, connected in series with the respective power amplifiers (USM1) 61, (USM2) 62, (USM3) 63, (USM4) 64. The input unit current reference (BST) 50 program block (PB) 48 is connected with the sensor 65 oil level (DUN). The sensor 65 oil level (DUN) is a trap for oil 42 (figure 2) and is made in the form of a known system charge-coupled LEDs, producing electrical impulses depending on the oil level. Each of the power amplifiers (USM) 61-64 associated with the respective pair of dipoles 32, 33, as shown in figure 5 (outer dipole (SFD1) 32 - internal dipole (DPA1) 33, (SFD2) 32 - (ABS2) 33, (SFD3) 32 - (ABS3) 33, (SFD4) 32 - (ABS4) 33. Each of the amplifiers USM 61-64 includes controlled thyristors VS1 and VS2, are associated with the outputs of the amplifiers 57-60, power transformer TV voltage (Fig.6). The midpoint of the primary winding of the power transformer voltage is the third input of each amplifier 61-64 power and is connected with the output of generator 56 powerful signals. The secondary winding of the specified power transformer through the diodes connected to the inputs of dipoles 32, 33, the conclusions of which is connected to the medium that is some of the secondary winding of the specified power transformer.
Stand to determine neftegazodobychi rock samples according to the invention operates as follows.
First, prepare the rock samples intended for testing. To do this, after full saturation of the pore space samples in an aqueous solution of a given concentration of NaCl create a residual water saturation by centrifuging or by using known capillarisation, then saturate the samples of rocks oil or its model by jacking up to 6 volumes long. The mass of residual water and oil in the samples are determined by weighing, if known, the dry weight of the sample.
The stand according to the invention is prepared for operation as follows. Collect the lower part of the housing 6, using the sleeve 11, 27, the lower punch 14, the electric terminal 15, a nut 16, a sleeve 8, the bottom cover 10, a sleeve 12, passing inside the sleeve 8, the faces of the tetrahedron 30 with attached inside the electric dipoles 32, 33 attached to the multi-channel electrical sensors 34. The faces of the tetrahedron 30 with electric dipoles 32, 33 after connecting the dipoles 32, 33 to a multi-channel electrical sensors 34 are collected in a tetrahedron using, for example, adhesive bonding or otherwise. Then assembled the lower part of the stand with the listed items push what about the internal cavity of the housing 6 and using the shutter 28 and the retainer 29 finally bring the lower part of kindergaten in the desired state. Then use the tape top part of the sleeve 8 is compressed to the size of the smaller diameter hole of the upper cover 9, thereby preparing the Assembly of the upper housing 6.
Then push the top cover 9 into the internal cavity of the housing 6 and using the shutter 28 and the retainer 29 fasten it to the enclosure 6, straighten the upper part of the sleeve 8, freeing it from the tightening of the tape and thereby leading to the interfacing surfaces of the sleeve 8 and the cover 9. Then start filling the cavity of the sleeve 8 is prepared for testing the model 35 oil reservoir in the form of a column composite samples, interspersed soaked in an aqueous solution of NaCl strips 36 of the filter paper. On top of the specified column put the disk 37 with gasket 36 between them, then install the sleeve 11 and the upper punch 13. Off-transect 2 cylinder 3, a piston 4, a gasket 20, the rings 21, 22, the spacer device 23 installing collected kindergaten in a vertical position supported on the lower yoke 1 with the lower annular sleeve 26. Then install the remaining attached to the sleeve 27, 26, 25, emphasis 17 with opening 18, the cover 19. Wear on the rod 5 has been removed previously yoke 2 and fix it using the previously specified locking connection, resulting then in a reliable contact spacer device 23 with the sleeve 25, compacting top the e and lower annular projections of the sleeve 8 in the volume formed by the surfaces of the upper punch 13, the sleeve 11 and the top cover 9. To the lower fitting of the lower punch 14 is connected to the pipe 40 (figure 2)and to the fitting of the upper punch 13 is connected to the pipe 39 and at small expense aqueous NaCl include adjustable liquid pump 47 a constant direction, gradually displacing existing gaps and voids described above Assembly the air. When it is possible to use a vacuum hand pump Kamovsky, by connecting the vacuum hose to the fitting of the valve 44. After displacement of the air gap Assembly produce filling an aqueous solution of the rest of the void space of the pipes 39, 40, traps 42, the inlet channels to the gauges 41 at an open valve 44 in the upper part of the trap 42. Then begin to create conditions approaching formation. On channels 7 and 7' small steps of about 25÷50 kgf/cm2served the pressure agent (e.g., transformer oil) with exposure at each stage of 30-40 min, adhering to the original uniform uniform pressure (σ1=σ2) on the model layer 35. If the specified conditions require different ratios of axial and lateral loads on the composite column of rock samples σ1=(0,8÷0,9) σ2then after setting uniform uniform pressure start on tapinoma creating uneven pressure on the breed. Axial stress σ2on the model layer 35 of rocks is transmitted by the piston of the working cylinder 4 3 gasket 20 of dielectric material, and then to the stop 17 with opening 18, the upper end of the nut 16, clamped to the upper terminal 15 and to the upper end of the punch 13. The pipes 39 and 40 are attached to the fittings of the punches 13 and 14, which transmit pressure p1=p2fluid in the pore space of the model layer 35 using the bypass pipe 46 at the open valve 45'. After creating all the set pressure begin gradual creation of a given reservoir temperature using an external heater, which is not shown. Upon reaching the reservoir temperature should be followed by the displacement of oil from the reservoir model 35, pre-block valves 45', while the bypass pipe 46. Pump 47 in the model of the reservoir 35 through the channel of the lower punch 14 serving aqueous NaCl solution of a given concentration, maintaining a pressure gradient is applied in the development of oil fields with contour flooding. Displaced oil from the model layer 35 is collected in the upper part of the trap 42 (figure 2). After pumping a few (10-15) volume of the pore space of the composite column samples of rocks that make up the model layer 35, and establish the fact that the oil has stopped and the further pumping of aqueous solution of NaCl is almost useless starts the operation of the unit (figure 5) job mode resonant electromagnetic oscillations generated by the dipoles 32, 33, creating additional driving force on the ions of oil included in the layer of residual oil in the composite column of rock samples. In this specified driving force you can pump 47, and connecting an additional pair of dual dipoles 32', 33' in the construction of the lower punch 14 (Fig 3, 4)that are in working condition will shift the ions of oil in the radial direction. The overlap of the two driving forces along the composite column samples and across the longitudinal direction can give the additional effect of increasing oil recovery, pulling ions of oil due to natural barriers in the form of grains of rock that stand in the way of the longitudinal force.
Block (figure 5) job mode resonant electromagnetic oscillations generated by the dipoles 32, 33, works as follows.
Tracking and regulation level of the oil in the trap 42 after achieved by flooding model 35 oil reservoir contains a level sensor oil (TUNG) 65, the input of which is applied the oil consumption and output - consumption of water. The sensor 65 oil level is performed, for example, in the form of a digital chip charge-coupled providing digital information about the position of the oil level, celebrating the beam is dignaga float type of led. With the increase in the volume of oil trapped light 42 high-order bits of code strips chip charge-coupled with decreasing Vice versa.
Digital information from the sensor 65 oil level on channel "a" is fed to the input unit 50 of the current assignment (BST) internal dipole 33, which is compared with a given current. The value of the specified current is supplied to the other input unit 50 of the current assignment (BST) on channel "B" of the program block (PB) 48. The difference in the codes of the digital information on the channel "C" is supplied to the control input of the computer (PC) 49, equipped with a standard program, such as type MAX.
Start up and operation of the program are controlled by the PC operator to display information (DUN) 65 on the screen of the monitor application block (IB) 49.
The angle α control the power transistors of the power amplifiers (USM) 61-64 installed in accordance with the signal on the channel "D", with the release of the block (IB) 49 (ALU) 51 and then through the device 53 phase control (UFA) in amps current 57-60.
The device 53 phase control (UFA) provides a constant angle control α1≈10° for thyristor VS1 dipole DPN and α2=30÷120° for thyristor VS2 dipole WPV1 (6).
Power amplifiers (USM) 61-64 is supplied from the generator power signals (HMS) 56 filed at the midpoint of power transformers TV power (USM) 61-64.
The amplifier signals (CA) 57-60 made under the scheme potentiometric phase shifter, for example in the form of an RC circuit in which the resistance change of the potentiometer R is a non-contact method. The angles of the thyristor control amplifiers 61 - 64 power α1≈10° and α2=30÷120° provide the ratio of the currents in the dipoles 32, 33 in a maximum ratio of 3:1.
If the maximum choice of impact shock in the specified ratio of 3:1 and the termination of its effect on the ions of residual oil, is transferred to the exposure by changing the frequency of the pulse signal. On the channel "E" on the block 52 of the control frequency (BUTCH) a corresponding signal, which changes the multiplier pulses managed counter 55 pulses (WUXI)associated with the generator 56 powerful signals (HMS).
The work described channel "E" and its ending are trailing in the course of the experiment, the displacement of oil from the reservoir model.
Razniewski electromagnetic waves generated by the dipoles 32, 33 at the respective setting their frequency close to the oscillation frequency of the ions of residual oil are transferred to the model layer 35 and as such perform the role of wiretransfer to move residual oil to exit from the model layer 35 in the trap for oil 42.
Figure 5 shows the scheme of work of eight dipoles placed aparna on the inner sides of the convex faces of the tetrahedron. A similar scheme will be for the larger number of faces of a convex polyhedron with corresponding electric dipoles 32, 33, including for the case when the outer and inner dipoles 32', 33' posted by relying on the end face of the lower punch 14 (Fig 3, 4). In this latter case, when additional working dipoles 32', 33' in the above Raznoimport mode, ions of residual oil, located on the grounds of the grains model 35 seam, perpendicular to its longitudinal axis, will move radially and then to carry the total flow together with ions moving in the longitudinal direction, the output from the model 35 of the reservoir, which will be more efficient to have an impact on the overall Neftegazodobycha.
After the almost complete displacement of oil from the model layer 35 begin its recovery from the internal cavity of the housing 6 of kindergaten, resetting to zero all the specified pressure and temperature. For this release the frame from the upper beam 2 and remove the emphasis from the upper punch 13 and extract it. Then remove from the frame body 6 of kindergaten and the lower punch 14, freeing the access to the column composite samples, models 35 of the reservoir and pushing them turn after turn of the body 6 of kindergaten 90° or 180° on the stand with a hole. After extraction, the samples were immediately weighed. The weight of the samples after the experiment must be bolshevise samples filled with original residual water and oil, as oil viasnilos, and its volume occupied free water from the trap. After removing the first model 35 oil reservoir proceed to installing the second model of oil reservoir, and all the operation is repeated as described previously.
Calculations of the required technical parameters of block job mode electromagnetic waves can be made the same way as is described, for example, in the patent of Russian Federation №2049912, and also in the book: Use, Gasevic. Fundamentals of rock physics. M., "Nedra, 1973. see § 12.
Application razniewski fluctuations in every two adjacent time half period, which is equivalent to creating a driving force to the medium exposed to such fluctuations, found development in developed by the authors "the Way of the development of oil and gas condensate field and the equipment for its implementation" (see RF patent №2049912). Stand according to this invention can be effectively applied for simulation and training to a wide implementation of the perspective ways of development of oil fields.
1. Stand to determine neftegazodobychi rock samples containing a rigid frame including a vertical rod connected with the upper and lower arms, the body of kindergaten equipped with top and bottom plates, esemeny inside one traverse the working cylinder with piston, the upper and lower punches, the ends of which are made conductive in the radial and axial directions of the liquid channels, the vibration exciter nonharmonic oscillations, characterized in that the specified vibration exciter is designed as a vibration exciter electromagnetic waves, razniewski in every two adjacent time half period, the waveguide of these electromagnetic waves are the focus, installed between the upper movable punch and a piston mounted in the upper traverse, the model studied oil reservoir and the lower stationary punch, with the specified waveguide electrically divided from the body of kindergaten, the output of the upper movable punch pipeline is connected with the input has a level sensor oil traps for the displaced oil, and the output of the specified the trap is connected by another pipe to the input of the lower punch through the shutoff valve, one-way check valve and the pump constant direction, the housing kindergaten includes a ring cavity cover the specified researched model of oil reservoir, within the specified cavity based on the lower cover of kindergaten is hollow polyhedron, each of the inner faces of which are parallel to the vertical axis of the model studied oil reservoir placed in pairs, nested one into D. the UGA electric dipoles, these dipoles installed through the bottom cover of kindergaten the electrical sensors associated with the block job mode electromagnetic waves.
2. The stand according to claim 1, characterized in that it further comprises an electric dipole located in the plane perpendicular to the vertical axis of the model oil reservoir.
3. The stand according to claim 1, characterized in that the block set modes of electromagnetic waves is made as a block razniewski in every two adjacent temporary half-cycle electromagnetic waves that create the driving force of the ions of residual oil model oil reservoir and their resonance with non-harmonic electromagnetic fluctuations caused by non-harmonic oscillations of currents i and i' in these electric dipoles.
4. The stand according to claim 1, characterized in that the block job mode radiated by a dipole electromagnetic waves includes a software block containing personal computer, the unit current assignment, arithmetic and logic unit, outputs the specified computer are connected with a control unit frequency and unit of the phase control, the output control unit frequency associated with the input of the control pulse meter, the other input of which is connected with the output of the quartz resonator, and the output from the generator input power signals, the unit outputs the phase control are connected with the inputs of the amplifiers current connected in series with the respective power amplifiers, power (third) inputs of which are connected with the generator output power signals, the input unit current reference block is associated with a level sensor oil located in the trap for oil, each of the amplifiers associated with the respective pair of inner and outer dipoles, the currents i and i' in the outer and in the inner dipoles, respectively, in the opposite direction and are regulated in proportion as i/i'=1.5 to 3, in each of the outer dipole currents i are equal, and the currents i' in each of internal dipoles are equal.
SUBSTANCE: material with pores of controlled size and shape is made in form of a fragment of polymer hole-assisted fibre or hole-assisted fibre based on quartz glass, or photon-crystalline fibre. Pore size can vary from nanometres to several micrometres or more, and the shape of the cross section of the pore can vary from circular or elipsoidal, or triangular, to star shaped. Also fragments of the material can be packed into a unit, spaces between which are filled with special filler, for example epoxy resin.
EFFECT: reduced errors in determining pore volume, obtaining accurate geometrical shapes of pores and high accuracy of porosimetrical calibration.
FIELD: testing equipment.
SUBSTANCE: invention is related to nondestructive check of materials. In method of surface defects detection for impregnation they use organic dissolvent with suspension of finely dispersed paint. Impregnation is carried out for 5-50 min, after removal of excessive organic dissolvent from surface with suspension of finely dispersed paint controlled sample is placed into sealed chamber, in which excessive pressure is previously pulled, and maintained in it for 60-90 min. Afterwards chamber is blown with inertial gas, and concentration of organic dissolvent in gas mixture at the outlet from sealed chamber is measured, and open porosity of surface "П"open.sample is detected in tested sample by design method. At the same time after measurement of organic dissolvent concentration in gas mixture controlled sample is removed from sealed chamber, and total area of surface defects painted with finely dispersed paint, which is used to understand relative support surface of controlled sample.
EFFECT: expanded field of application of surface detects detection.
FIELD: instrument making.
SUBSTANCE: invention relates to instrument making, particularly to measurements of specific surface of dispersed and porous materials and can be used in development of measuring instruments. Proposed device incorporating temperature automatic control function comprises housing 1, adsorber 2, adsorbate (saturator) source 3, and detector 4, for example thermal conductivity detector. Proposed device comprises also adsorber thermal control device made up of casing 5, temperature pickup 6, temperature controller 7 and heater 8. Detector thermal control device consists of casing 9, temperature pickup 10, temperature controller 11, heater 12, four-way valve 13 to switch gas flows in blowdown, adsorption and desorption conditions, filter-drier 14 of pulse lines 15 and measuring unit 16. Note here that carrier gas source represents air micro compressor 17 and adsorbate (saturator) source 3 represents glass or metal vessel. Temperature pickups 6 and 10 are arranged in adsorber temperature control device and detector thermal control device, respectively, and are connected with temperature controllers 7 and 11. Note here that thermal conductivity detector 4 is connected with bridge measuring circuit of measuring unit 16.
EFFECT: reduced measurement interval, higher efficiency and safety.
3 cl, 2 dwg
SUBSTANCE: device comprises a polarizer and an analyser of a fast-response laser ellipsometre. The device comprises also a table for the samples holding and nozzles for the supply of gas-vapour mixture directly into the ellipsometric measurement zone. The above elements are fixed on a rigid frame. The device comprises a gas-vapour mixture preparation unit with the inlet of the latter being connected to a pure gas cylinder through a reducer. The outlet of the gas-vapour mixture preparation unit is connected to the nozzle through which the gas-vapour mixture is supplied.
EFFECT: improved reliability of the device due to the simplified design and considerable speed-up of the measurement cycle.
2 cl, 5 dwg
FIELD: oil and gas production.
SUBSTANCE: invention refers to oil producing industry and is designed for evaluation of permeability of pay reservoirs saturated with fluids. According to the method a logging instrument is assembled in a well; the logging instrument consists of an acoustic emitter, of at least two acoustic detectors (AD), of at least two electric emitters and of at least two electric detectors (ED). Also each AD is located between ED and the electric emitter. To excite a reservoir an acoustic pulse is generated, whereupon amplitude of acoustic response (AAR) is measured by means of AD and amplitude of current strength initiated by acoustic effect is measured with ED. Further, pulse of voltage is generated at the same position of the instrument; and AAR, initiated with applied voltage, is measured with AD. At the same position of the instrument the acoustic excitation of the reservoir is repeated at least once followed with measurements of AAR and current strength amplitude; also voltage pulse is generated followed with measurement of AAR. Notably, acoustic pulse and voltage pulse with increased amplitudes are generated at each repeat. Permeability is calculated for each of sub-layers of the reservoir located opposite AD at a specified position of the instrument in the well. Also, thickness of the sub-layer is equal to distance between adjacent AD. The instrument is moved up or down along the borehole of the well at a distance equal to distance between the adjacent AD; sequence of all above mentioned actions for each sub-layer of the reservoir is repeated. Permeability of the reservoir is evaluated on base of obtained data.
EFFECT: minimisation of inaccuracies during continuous logging.
5 cl, 2 dwg
SUBSTANCE: method consists in boring vertical, horizontal or inclined borehole, in recovery of core samples from collector rock, in applying thermal analysis for identification of separate chemical compounds of collector, in determining connection of per cent concentrations of minerals with parametres of porosity and penetrability by using multi-dimensional correlation-regressive analysis and obtaining plural linear correlation equations for concrete oil and gas deposits facilitating calculation of porosity and penetrability on base of data on mineralogical composition of oil and gas deposits.
EFFECT: reduced labour intensiveness, and upgraded accuracy and validity of determination of mineralogical composition of core material.
1 ex, 2 tbl, 4 dwg
FIELD: physics; measurement.
SUBSTANCE: invention may be used in many production industries, in laboratory practice of mining, geological, oil and gas research institutes and enterprises in performance of physical and chemical analyses. Device contains frame formed with top and bottom cross beams and two stands. Core holder is installed inside the frame, and it incorporates hollow casing with radial channel, top and bottom covers, upper and lower puncheons, including axial and radial channel, cartridge with rock sample installed inside of it. Device contains cylindrical support with through aperture, upper edge of which is connected to the lower cross beam of frame, and lower edge - to bottom that includes prop fixed in its axial opening and hingedly connected to the bottom edge of lower puncheon. Pneumatic chamber that incorporates casing with radial channel and piston is installed inside the frame. Casing of pneumatic chamber is rigidly fixed to spring-loaded fork supports with the possibility of their hinge sliding to sealed connection with upper edge of core holder top cover, through channel is arranged inside top cover. Pneumatic motor is connected to radial channel of casing, balloon with gaseous helium or nitrogen is connected to radial channel of top cover and radial channel of lower puncheon. Trap is connected to valve of top cover body radial channel, and piezometer is connected through appropriate valves.
EFFECT: simplification of design, higher reliability of its operation and reduction of cost at required efficiency.
3 cl, 6 dwg
FIELD: oil and gas industry.
SUBSTANCE: invention refers to oil and gas industry and is designed for study of rock samples, selected from a porous medium crushed in a natural or artificial way. Porosity of studied rock fragments is measured by means of testing pressure of helium or any other gas in accordance with a known procedure. The chamber of fragments, containing the above said rock fragments, is connected to a reservoir of a known volume containing helium under a known pressure. At a balance of pressures the value of a hard volume can be calculated. Also mass of these fragments and circumflex volume of the studied rock fragments is measured. Combining in a certain way these measurements porosity as well as density of the studied rock samples is determined. Then their permeability is evaluated by means of drowning these fragments into liquid and connecting chamber with liquid initially contained in a special reservoir under a certain pressure to compress gas which is contained in pores of studied rock. By means of modeling of variations of volume of liquid supplied into the chamber and by means of the iterative correction the values of the said physic parameters are evaluated.
EFFECT: upgraded accuracy and simplicity of rock permeability and porosity evaluation.
14 cl, 13 dwg
FIELD: oil and gas industry.
SUBSTANCE: invention refers to oil and gas industry and can be used at evaluation of the type of a solution not upsetting the filtrating properties of rock. The essence of the method of evaluation of influence of process liquid filtrates penetration on filtering characteristics of rock is based on determining a water and residual water volume in a sample. If contents of water in the sample is lower than that of residual water, then it is considered that adsorption of chemical reagents on the surface of rock causes reduction of permeability; if then contents of water in the sample is higher than residual water then diffused layers cause reduction of permeability.
EFFECT: maintaining filtration characteristics of a well bottomhole.
FIELD: chemistry; organic.
SUBSTANCE: invention relates to the methods of determination of microorganism permeability index and can be used to control the effectiveness of high-efficiency particulate air filter and personal protective gear in biotechnology, sanitary, medical and applied microbiology while working with microorganisms and its toxins. The method for determination of aerosol filter permeability for microorganisms includes preparation of liquid test specimen, its dispersion in aerosol before filter, selection of aerosol samples before and after filter, determination of the biological marker content in aerosol samples. The test specimen of protein initiating ice formation, ice formation activity detection, which is carried out according to occurrence of samples of nucleation centers is used as a marker.
EFFECT: insurance of the safe method for determination of microorganism permeability index.
SUBSTANCE: invention refers to mining, particularly to modelling surveys of underground constructions and can be used at designing mine opening and tunnels. The method of deformation and destruction modelling of massif of rock around open area consists in applying external forces to a contour of a surveyed object. Also the surveyed object enclosed in corresponding boundaries is arranged around a cavity imitating open area; the cavity is located in the case of the modelling installation. Space between walls of the case and the surveyed object is filled with metal balls; on top there is laid a rubber padding with metal bars on ends; by means of a press corresponding pressure is applied to these ends.
EFFECT: more efficient evaluation of pressure in model components at various geometric parametres, survey of nature of deformation and destruction of massif of rock around open area.
SUBSTANCE: facility consists of cylinder case, of puncheon with force indicator installed in case perpendicular to its axis, of hinged torque link, central hinge of which is connected to puncheon, of two sliders whereon two end hinges of torque link are arranged, of bar with two stops wherein between two slides are installed, of guide for displacement of bar and of spring loaded inertia load. The facility is equipped with three electro-magnets; the first electro-magnet is secured on the cylinder case. The first and the second electro-magnets are attached to the bar and are designed to interact with the inertia load. The latter is made out of electro-magnet material and is placed between the second and the third electro-magnets.
EFFECT: increased scope of information by alternating constant continuous affecting loads with not damped cyclic loads and with damped cyclic loads with beginning of oscillations of utmost or zero initial loads.
1 cl, 1 dwg
FIELD: oil-and-gas industry.
SUBSTANCE: device contains filled di-lectical case with a pressure compensator, top and bottom centralisers, electrical block, rotor with rotation drive, proximity sensor, located in a safety jacket with ability of actuator arm radial reciprocating displacement at movement transition from an additional drive and mounted at the rotor end, outgoing from the rotors bottom though a sealed end hole and a surface equipment; equipped with a slide connected to the jacket, installed on a cylindrical guide, which has anti-cranking unit, at that the cylindrical guide executed as a tightening telescopic connection of two counter invented with necks barrels, forming connected to the case and the jacket cylindrical cavity, where the actuator execute as a screw type gear located, which interacts with barrels bottoms, one of which stiffly connected with the rotor, and other one - with the slide.
EFFECT: design simplification, reliability increase, extended capabilities, axial dimensions and weight decrease.
6 cl, 3 dwg
SUBSTANCE: equipment for rock field research, containing a cylindrical case, a bar installed on the case longitude axis, forces, installed perpendicular to the axis and cinematically connected with the bar's one end, a load, cinematically connected with the bar's another end; according to the invention a toe cam for interaction with the force installed on the bar's end, the toe cam and forces located in a case, which has a guide for moving along and rotation around the bar's axis, a rotation and moving displacement fixer and a fixed for the connection to the toe cam, the load hangs swiveling on the bar's end on a balance, with a fluctuation ability in the bar's axis dislocation plane and in a plane perpendicular to the bar's axis, at that the balance has a detachable swivel butt, connected to the case, but the bar connected to the balance with axial rotation ability.
EFFECT: information flow increase due to wells wall loading with a convergent oscillation load, convergent displacement of load application points perpendicular and along the wells axis, at the convergent oscillation load lines change along the well axis.
2 cl, 1 dwg
SUBSTANCE: device contains a counterforce unit, equipped with a measurement unit, installation device with stiff and flexible drafts, connected to the counterforce unit; according to the invention, the counterforce unit executed as elastic rings according to number of a strain directions, stops, fixed on rings external surface pair wise and diametrically and oriented to strain directions accordingly, the installation device stiff draft is tube shaped, connected to rings with guides, oriented in the stop pairs fixing direction accordingly, the flexible located inside the tube and connected with rings in stops fixing places, at that the measurement unit executed as ring's strain individual recorders. The device significantly increase precision of measurements, because of the well cross section, in a single zone, along its length, several diametrical directions simultaneous strain recording.
EFFECT: precision of measurements increase because of strain recording in a single zone along its length, in a well cross section several directions simultaneously.
FIELD: mining engineering.
SUBSTANCE: device contains two bench marks, at first it is installed angular movement transducer, connected to block, and controller connected to angular movement transducer by conductor line. Block is enveloped by cable sheath, connected to the second bench mark by one end by means of elastic coupling, and by other - by means of adjustment mechanism.
EFFECT: reliability improvement of its work ensured by design simplification and expansion of application area.
SUBSTANCE: invention refers to mining engineering and is intended for measuring well deformations. Deformometre includes installation device in the form of a screw with a nut and screw turning device, spacer assembly connected to nut and rheostatic measuring assembly. According to invention, nut has device for being moved along screw; screw has swing lock pin; spacer assembly is made in the form of spring-loaded punch radially installed on nut, and measuring assembly is installed on punch.
EFFECT: improving accuracy of measurements by recording radial deformations throughout the well wall surface.
SUBSTANCE: invention refers to the field of mining and may be used for continuous measurement of deformation of walls of blast-holes or boreholes in full-circle. Device for measurement of blast-holes deformation contains body structure, lighting, dim scatterer, transparent plate, spring stops. At that device is designed in the form of split encapsulant consisting of two parts. In its front part - heads of encapsulant, inside of body structure, full-circle, at equal distance from centre in equivalent sectors there are master balls arranged attached to cores moving freely in body structure. At that cores are attached to one end of retaining spring located from outer part of encapsulant front head rigidly fixed to body structure of encapsulant head. From side of blast-hole collar master balls are separated by transparent plate from rings for pulling-out of device. At head of encapsulant contains spring stops and power supply source controlled by electronic switch.
EFFECT: obtaining of most complete and exact data concerning displacement of walls of blast-holes or boreholes not removing tool during cut of web by combine.
SUBSTANCE: invention refers to the field of hydrogeology and engineering geology and may be used upon assessment of ground surface deformation. Device contains observation borehole, casing pipe, transmitter, converter, flexible cable, measuring pulley with profiled groove and deep-earth anchor installed in uncased section of observation borehole. At that transmitter is made in the form of converter. Measuring pulley is installed on two supports with option of free rotation. Flexible cable is arranged in profiled groove of measuring pulley in two turns and rigidly fixed by its one end on deep-earth anchor in borehole bottom and by the other end is connected to back-weight by means of measuring pulley. Axis of measuring pulley is rigidly connected to converter which is attached to third support and connected to converter for transmission of digital code to monitoring centre.
EFFECT: design simplification, improving of accuracy of soil subsidence determination, thus preventing oncoming accident.
SUBSTANCE: invention is related to mining, to devices for measurement of deformations and contortions in wells and boreholes. Device comprises fixed contact in the form of twisted cylindrical spring. Inside of it there is a movable contact arranged in the form of elastic cylinder with sliders that are evenly distributed along circumference. Spring contacts are connected to registration device. Supports are fixed on external surface of spring turns. It is necessary to reduce spring diametre in process of device installation in well. For this purpose device is equipped with accessory for spring tension or accessory for axial twisting of spring.
EFFECT: simplified design and improved accuracy of measurement.
FIELD: measurement equipment.
SUBSTANCE: invention relates to analysis of the geological stratum fluids in the well for estimate and inspection of the stratum for the purposes of investigation and development of hydrocarbons production wells. The method and devices for analysis of stratum fluids in a well by way of separation (selection) of fluids from the stratum and/or borehole in the assembly for regulation of pressure and volume which is integrated into the flow line of the fluid analysis module and definition of isolated fluids characteristics. The required parametres may be deducted for stratum fluids in the static state and the undesirable stratum fluids may be drained and substituted with stratum fluids suitable for definition of characteristics or extraction of samples to the surface. The selected stratum fluids may be subject to circulation in the flow line circuit for definition of phase behaviour characteristics. Real time analysis of fluids may be performed under or almost under well conditions.
EFFECT: creation of method for analysis of stratum fluids in well by way of selection of fluids from the stratum and/or borehole into the analyser module flow line.
21 cl, 10 dwg