Device for drilling agent degassing
FIELD: oil and gas production.
SUBSTANCE: device for drilling agent degassing consists of degassing chamber, of its cover, of float and of aerator. The degassing chamber is made as vertically elongated structure and consists of two coaxial vertically oriented pipes of different diameters: an upper one - of bigger diameter and a lower one - of smaller diameter. On a lower end of the lower pipe there is present non-uniformity in shape of meander around circumference in section of the end part of the lower pipe. The aerator is positioned inside the lower pipe from the lower end and has diameter less, than diameter of the lower pipe. The cover of the degassing chamber has four ports for release of excess pressure, for sampling of analysed product, for connection with an inlet of a compressor and for connection to the channel for the aerator.
EFFECT: reduced weight and dimension at reduced cost and expanded functionality of implementation under various conditions including reservoirs of drilling rigs of low capacity.
3 cl, 1 dwg
The invention relates to gazoneftedobyvayuschie industry, namely, devices gas logs in the process of drilling oil and gas wells, in particular, for selection to the analysis of the gas mixture for gas logs.
The known device for degassing drilling mud using degaser structures of different types [author's certificate SU for inventions№124384, №269875, №328247, №512446, №535414, №1479035, №1542567 and patents RU invention№2156152, №2271434, №2276249]. Float, screw and vibratory degassers are installed in the conduit through which flows the drilling fluid flowing from the well. The distance between the crystallizer and the mouth of the well should be kept to a minimum and is determined by technological conditions. The problem is that degasser caught a large part of the gases of mud.
However, a significant proportion of these degaser allows to capture only a portion of the gases being free and dissolved States in the mud. A significant portion of the free gas is lost in the wellhead at the time of exit of the solution, and also on the way from the wellhead to the degasser.
Disk degasser is designed to capture free gas at the exit of the solution on the surface. Serious interference with this degase the ora cause viscous solutions.
Of greatest interest degassers float type.
A device for degassing drilling mud float type, designed for continuous selection of free gas from part of the flow of the drilling mud out of the well [http://www.geosferatver.ru/gaz/dp-1/dp-1.php]. The degasser is made of sheet stainless steel and includes a housing mounted on two cylindrical floats with the possibility to adjust the depth of immersion in the drilling fluid. On the housing mounted radiator type heat exchanger for condensing vapors of the drilling fluid inside the degasser and the means for its attachment to the vessel wall. The geometrical characteristics of the degasser provide buoyancy in drilling fluids of different density. In the case of the degasser has a hole for the connection of gas chamber with the atmosphere, necessary for equalizing the pressure inside and outside the camera. To improve the allocation of gas from solution degasser is equipped with plate dividers in the form of a comb that is installed inside the housing perpendicular to the traffic flow. The principle is based on the allocation of gas bubbles from the surface layers of the drilling fluid passing through the plate dividers of the degasser, and removal of the resulting gas mixture by vacuum, creating what imago pump system to transport the gas mixture, installed in the station geotechnical research wells. The amount of degassing chamber 3 DM3. The surface area of the degassing 0.1 m2. Adjustable depth 35 mm Length of the degasser 740 mm width 390 mm, height 230 mm, Weight of the degasser - 6,2 kg
Also known float degasser [Pomerantz LI Gas logs. M.: Nedra, 1982. P.57], consisting of a body of the working chamber made of stainless steel and mounted on foam floats on which it floats in the stream of drilling fluid (mud). Float degasser is installed at the wellhead and is fixed in the vessel with the help of stretch marks. Installation of the degasser on floats ensures a constant position of the working chamber float degasser regarding the level of mud in the tank, i.e. the constancy of the relationship magazinemore volume of mud to the volume of the gas phase in the chamber of the degasser. The lower part of the body of the float of the degasser is open at the front. Inside the housing perpendicular to the direction of mud flow mounted partitions with slits, resulting in fragmentation of mud flow and a slight increase in the contact surface degirolamo mud with air in the working chamber of the degasser. In the front of the case features a visor with holes to allow air in the working chamber. On the top of the case has loves the a-sump with pressure feed gas mixture from the degasser in the gas line.
The disadvantage of the above-described analogs are not always acceptable increased size that does not allow the degassing process in containers of small volume, and low coefficient of degassing 1-2%.
The closest analogue to the claimed invention is a float degasser with an integrating circuit [Pomerantz LI Gas logs. M.: Nedra, 1982. Pp.61-62, and inventor's certificate SU for the invention №566223 on this same model]. The degasser is a degassing chamber in stainless steel, suspended by steel pontoons pontoon type with accessories that make it possible to regulate the position of the degassing chamber in relation to the level of the mud flow in the vessel. At the bottom of the camera mounted unit aerator connected to a portable compressor unit. Block aerator is a sealed chamber with a lid in the form of a membrane of nepristoinoi rubber or several parallel-connected to the compressor tubes from nepristoinoi rubber. In the membrane and the aerator tubes are made in increments of 2 mm 2000 holes. In the upper part of the degassing chamber has a cone reflector splashing mud and fitting to turn on the aerator in the integrating circuit. The cone is mounted fitting for connecting the degassing chamber to the hydraulic shutter, ensuring that the camera is Bolshogo excess pressure. The principle of operation of this float degasser is that the gas mixture extracted from the mud in the chamber of the degasser, continuously circulates in the integrating circuit, frequently in the form of ≈2000 bubbles barbthroat through the mud in the chamber of the degasser and continuously enriched gas extracted from the mud by these bubbles. With increasing pressure in the chamber of the degasser excess of the gas mixture through the water seal is removed from the camera, and restores the specified overpressure.
However, as in the aforementioned analogues, the degasser is different elevated size, which does not always allow him to work with modern equipment drilling rigs, since the size of data degaser incompatible with the size of the nodes in the first place, with pockets of shale shakers rigs.
The task of the invention is to reduce the weight, dimensions of the device for degassing drilling mud while reducing the cost and expanding the possibilities of its use in different conditions, including capacity drilling rigs small amounts.
The essence of the proposed solution lies in the fact that the device for degassing drilling mud, characterized by the presence of the float, which divides the device on the top - above the float part and the bottom - under the float is submerged part of degusa the ion chamber, made in the form of a vertically elongated structure consisting of two coaxial vertically oriented pipes of different diameters: the upper larger diameter located above the float, and the lower smaller diameter, located in the submerged part, the lower pipe is made with the possibility of entering the top inside of upper tube part of the volume occupied by the lower part of the upper tube; the bottom edge of the submerged portion of the lower tube has a heterogeneity in the form of a meander, made around the circumference of the cross section of the end portion of the lower tube; inside the lower pipe from the bottom edge placed aerator with a diameter less than the diameter of the lower pipe, between which and the side wall of the bottom the tube has a circular clearance; degassing chamber has a cover, which made at least four ports for: relieving excess pressure, selection on the analysis of the investigated product, the connection with the inlet of the compressor and connected to a channel on the aerator.
Applying the device for degassing drilling mud with the above-described characteristics, in which the aerator has a spherical shape and is made of ceramic crumbs.
Moreover, there is a device for degassing drilling mud with the above-described characteristics, in which the float is made of Styrofoam, wrapped fiberglass, over which caused protect the interest impregnation.
The technical result of the proposed solutions is achieved by changing the geometry of the nodes, materials, devices for degassing drilling mud, produced of nodes (one with an updated, others with very different geometry) component parts in comparison with the closest analogue. The proposed solution is to design the degasser in the form of two round vertically elongated bodies type tubes placed one coaxial another, each other and with a specific output of one of the pipe beyond the other in their end parts in the middle part of the degasser, which has a float, and a diffuser with a specific structure and form of a spherical porous ceramic body, as well as clearance from the bottom of the final part of the lower pipe in the form of a meander along the contour of the lower circular section.
The claimed invention is illustrated with a drawing, which shows a General view of the degasser. In the drawing positions 1-14 mark:
1 - degassing chamber;
2 - cover;
3 - float;
4 - top tube;
5 - lower pipe;
6 - meander;
7 - aerator;
8 - port for connecting to the channel on the aerator;
9 - channel aerator;
10 - port for relieving excess pressure;
11 port for selection to the analysis of the investigated product;
12 - port for connection with the inlet of the compressor;
14 - stem mounting.
Device for degassing drilling mud has a degassing chamber 1 with the cover 2 and the float 3, which divides the device on the top - above the float 3 - part and the bottom - under the float 3 - submersible part. The latter is made of Termodinamika material - foam-wrapped fiberglass, over which caused impregnation, preventing aggressive influence of mud on the material of the float 3. Degassing chamber 1 is made in the form of a vertical elongated structure consisting of two coaxial vertically oriented pipes 4, 5 of different diameters, the top 4 of larger diameter located above the float, the bottom 5 of a smaller diameter is located in the submerged part. The lower pipe 5 degassing chamber 1 is made with the possibility of entering the top inside of upper tube 4 on the part of the volume occupied by the lower part of the upper tube 4. On the lower edge of the submerged part of the lower pipe 5, there is heterogeneity in the form of a meander 6 made of a circle in cross section of the end portion of the lower pipe 5. Inside the bottom of the pipe 5 from the bottom edge placed aerator 7 spherical shape, made of ceramic chips with a diameter less than the diameter of the lower pipe 5 degassing chamber 1. Between the diffuser 7 and the side wall of the lower pipe 5, there is an annular gap. In the cover 2 degassing camera 1 to perform the ENES, at least four port - 8, 10, 11, 12, respectively, for connecting 8 to channel 9 on the aerator 7, reset 10 overpressure, selection 11 on the analysis of the investigated product, the connection 12 to the input of the compressor.
Within the volume degassing chamber installed the holders 13, ensuring the centering of the pipes 4, 5 and does not allow to break the symmetry in the orientation of the elements within the degassing chamber 1. The rod mount 14 also serves to effect the fastening elements, in particular the cover 2 degassing chamber 1, and put up outside.
Device for degassing drilling mud works as follows.
When switching on the compressor (in the drawing, the compressor is not shown because it is not included in the number of nodes constituting the inventive device) starts the pump (pumping) of the gas mixture from the degassing chamber 1 with mud. At the same time there is a discharge of the gas mixture or air depending on the amount of gas in the mud, called degassing chamber 1 through the mud column, for example spherical diffuser 7 of the ceramic chips. Such movement of the gas mixture from the degassing chamber 1 into the compressor and from the compressor in the degassing chamber 1 mentioned above through characteristic of not only declared, but also for other, previously existing, devices for degassing drilling mud (see Orange is C LI Gas logs. M.: Nedra, 1982. P.62). The mentioned structural elements forming the circuit: compressor port 8 - aerator 7 - pole PJ - port 10 - compressor form an integrating circuit, which continuously circulates the gas mixture which is enriched with each cycle or depleted depending on the saturation of the mud at this point in time. Despite the fact that the column of mud is not a structural element, it is an important connecting link in this closed system is an integrating circuit that provides the main work and the function of the device. Bubbling mud occurs in the lower pipe 5 degassing chamber 1 through the entire column of liquid in the volume of the lower pipe 5.
The distinction of the proposed solution at this stage of the operation of the device is specially designed ports - input and output that are installed directly in the cover 5 degassing chamber 1. Float degassers with such caps are not found in the search process when preparing the application.
Mud, moving by volume, where the device gets into the zone of cavitation aerator 7 6 meander, through the initial formation of bubbles on its sharp edges. The compressor creates pressure in the diffuser 7 and, thereby, causes the mud to rise from the bottom edge of the immersion of the device in the top, where the going is it the main mud degassing, accompanied by overflow through the top edge of the submerged part of the lower pipe 5.
Bubbles of gas contained in the mud, are connected with large bubbles moving along the submerged part of the up, where the overflow of mud over the edge they collapse, releasing gas in the upper part of the upper pipe 4 degassing chamber 1. Degassing chamber 1 through one of the ports 12 of the cover 2 is connected with the input of the compressor, which ensures the continuity of the degassing process. Excess pressure without disturbing the operation of the device, is discharged into the atmosphere through the port for relieving excess pressure 10. From degasification chamber 1 through the port 11 is the selection of the gas mixture to be analyzed. The input port of the integrating circuit 8 is used to connect to the channel 9 to the aerator 7.
The invention is implemented in the experimental samples made at one of the enterprises, Saratov. They represent sets of corresponding pairs of tubes, the lower and upper with respective to each other in size, for example: the length of the upper pipe 160 mm, the diameter of the upper pipe of 110 mm, a length of the lower pipe 90 mm, the diameter of the lower pipe - 135 mm pipe Material is polypropylene. The thickness of the float 50 mm, width float - 160-165 mm, length float - 290 mm and, if necessary, more. Step meander - 20÷30 mm Product preparing for the practical is tion testing. Found constructive improvements virtually grounded, the samples made the above changes, which justified their constructive expediency.
1. Device for degassing drilling mud, characterized in that it has a float that divides the device on the top - above the float part and the bottom under the float is submerged part of the degassing chamber made in the form of a vertically elongated structure consisting of two coaxial vertically oriented pipes of different diameters: the upper larger diameter located above the float, and the lower smaller diameter, located in the submerged part, the lower pipe is made with the possibility of entering the top inside of upper tube part of the volume occupied by the lower part of the upper tube; the bottom edge of the submerged portion of the lower tube has a discontinuity in the form of a meander, made around the circumference of the cross section of the end portion of the lower tube; inside the lower pipe from the bottom edge placed aerator with a diameter less than the diameter of the lower pipe, between which and the side wall of the lower tube has a ring gap; degassing chamber has a cover, which made at least four ports for: relieving excess pressure, selection on the analysis of the investigated product, the connection with the inlet of the compressor and connected to the channel is on the aerator.
2. Device for degassing drilling mud according to claim 1, characterized in that the diffuser has a spherical shape and is made of ceramic crumbs.
3. Device for degassing drilling mud according to claim 1, characterized in that the float is made of Styrofoam, wrapped fiberglass, over which is applied a protective impregnation.
FIELD: gas-and-oil producing industry.
SUBSTANCE: here is disclosed procedure of reagent capsulation of consolidated material with utilised drilling waste. According to the invention as consolidating material there is used mixture of reagent of capsulation and large-tonnage waste of cement industry in form of cement powder at the following ratio of components, wt %: reagent of capsulation 20-30, cement powder 15-30, drilling waste - the rest.
EFFECT: raised efficiency of utilisation of drilling waste at simultaneous saving labour and material expenditures, also utilisation of local large-tonnage industrial powder-like waste of other branches of industry and simultaneous utilisation of oil slime at drilling oil wells.
4 cl, 5 tbl
FIELD: machine building.
SUBSTANCE: mechanical blade mixer consists of frame, of drive, of shaft, of main blade unit travelling axially relative to shaft and of intermediate fixed blade unit; both blades are mounted on shaft and receiving torque from it. The drive consists of an electric engine, of a worm reducer and of a flexible coupling between them. By means of a flange connection the shaft is coupled with the reducer and transfers torque via a key connection to the main movable blade unit spring loaded relative to a stop attached to the shaft; while the intermediate fixed unit is located between the flange connection and the main movable blade unit.
EFFECT: reliable qualitative mixing sediment with drilling agent and good repair ability.
FIELD: process engineering.
SUBSTANCE: invention relates to oil-and-gas industry and can be used to control drive system of vibrosieves with elliptical trajectory of frame oscillations, the frame being made up of two unbalanced exciters. Proposed method comprises varying phase shift between misbalance turn angles be affecting unbalanced exciter motors. Revolution cycle of first unbalanced exciter and time interval wherein exciters pass identical positions are constantly measured. Then phase shift between turn angle is calculated by mathematical relation. Thereafter, difference between obtained value and vibrosieves design rating is determined to vary acting voltage fed to one of motors of exciters so that said difference reduces to zero. If sign of obtained difference corresponds to that of rotation of the first exciter, then voltage fed to its motor is reduced. If sings do not match, voltage fed to motor of the second exciter is reduced. Further, control is performed by varying fed voltage to motors. If changed voltage reaches main voltage, then another motor actual voltage is decreased.
EFFECT: higher efficiency and capacity.
FIELD: oil-and-gas industry.
SUBSTANCE: equip vehicle exhaust gas system with turbo compressor, which by use of a thermally insulated air duct, connected with aerate device via a valve. The aerate device air duct top point located higher than a liquid tank top point. The aerate device at the same time acts as a heat exchange pipe for preparing reagent mixtures, and executed as a coil with holes for air discharge.
EFFECT: creation of easy designed mixing plant, which provides heating and producing of more homogeneous reagent mixture during the smaller time period, due to heated air barbotage with the turbo compressor.
1 cl, 2 dwg
FIELD: oil-ang gas production.
SUBSTANCE: vibration screen nets specific though capacity estimation method according to boring solution, characterised with that vibration screen installs into measurement cell as a truncated cone with the net sample on its smaller base, measure the boring solution density, start the vibration screen, supply the boring solution defined volume into measurement cell, continuously measure screened solution mass and define the mass derivative vs time. After the screening process ends measure boring solution layer height on the net with formula where m(t) - solution screened mass current amount, kg; mk - solution mass after screening, kg; ρ - boring solution density, d - cones smaller base diametre, m; α - measurement cell cone angle, define net's instant through capacity with formula q(t)=1/S·ρ·dm(t)/dt, where S - net sample area, m2; and define screen net specific though capacity dependently on the boring solution layer on the net.
EFFECT: efficiency increase in boring solution refinery.
FIELD: oil-and-gas production.
SUBSTANCE: invention related to oil-and-gas production can be used during wells boring for cleaning liquid purification. Equipment includes primary and fine purification units, pump for liquid supply into units, tanks for sludge and liquid collection. Primary purification unit includes two pipe one inside of another. External pipe inclined in 30°. Top right part of external pipe has a nozzle with possibility of tangential solution supply to the internal pipe. Along external pipe executed inside hole covered with net, for fine dispersed liquid passing by and tank for it collection. In inside pipe of smaller diametre installed a screw auger for taking out sludge form pipes bottom end and its withdrawal into bunker. Fine purification unit include big diametre inclined at the same angle as the external primary purification pipe, installed in it at one end second pipe of a smaller diametre and smaller dimension for purified liquid withdrawal into tank, located at first pipe bottom nozzle, installed on tangential in correspondence to the second pipe fitting for solution supply. On the part of the first pipe there is a short square thread with possibility hard particles withdrawal out of overall flow to the auger.
EFFECT: cleaning liquid purification quality increase, secure equipment operation.
FIELD: oil and gas industry.
SUBSTANCE: invention relates to method of separation to solid-liquid of clay solution on oil base including stages of contacting of said clay solution on oil base with oil-in-water emulsion including polymer obtained out of at least one water solved monomer wherein said polymer is not solved before contact with said clay solution on oil base, mixing of oil-in-water emulsion and clay solution on oil base and separation of solid phase from liquid phase of clay solution on oil base. Also the said invention relates to a composition including clay solution on oil base with oil-in-water emulsion including polymer obtained out of at least one water solved monomer wherein the said polymer is not solved before the contact with the said clay solution on oil base. Inventions are developed in dependant claims.
EFFECT: facilitating efficient separation solid-liquid of clay solution on oil base.
30 cl, 29 ex, 11 tbl
FIELD: petroleum industry.
SUBSTANCE: invention is referred to mining engineering and can be used for drilling of oil and gas wells. The system includes drill mud makeup and circulation unit equipped with mixing, dozing systems, rough filtering - mud screens and desanders and fine filtering - desilters, degasser, liquid drill drains treatment system with electrocoagulator, electroflotator, sectional distributing tank, filtering unit, returns disposal and storage unit including mud pit which consists of drilling wastewater collector and solid wastes storage area - slurry reservoir. Liquid drill drains treatment system includes a centre of knockout cyclones, inlet of the knockout cyclones centre being connected with outlet of sectional distributing tank and discharge to inlet of the electroflotator. Wastewater treatment level is improved and environmental requirements are met.
EFFECT: improved level of wastewater treatment.
6 cl, 1 dwg, 3 tbl
SUBSTANCE: dry treatment machine for drilling cuttings includes bunker for cuttings upload, dryer drum, crusher, chamber for aspiration of cuttings separation products in a dry air stream with separation products intake containers. First container in the separation course features vibration screen and tilted partition. The dryer drum is equipped with a ripper with cutters capable of rotating and reciprocating motion.
EFFECT: improved output product quality and lower energy costs of drilling waste separation.
4 cl, 3 dwg
FIELD: mining, drilling.
SUBSTANCE: said invention relates to drilling equipment and is provided for drilling mud desludging and separating drilling mud into clay and sand. The plant comprises a batch hopper, a washing drum and a drying cylinder. The washing drum is horizontal and is a hollow cylinder with a flat-cone head. Inside the cylinder, a hollow shaft with paddles is located, which is connected to a water source and may be motor driven. Each paddle is installed at an angle to the shaft and has an end-to-end channel directed from the shaft axis to the cylinder wall. In front of each paddle, water jets are installed at an angle to the shaft axis. Inside the cylinder, lengthwise channels are provided, each of which is connected to wash water source by means of openings in the cylinder-head joint. The drying cylinder is provided with a rotating and reciprocating agitator and a steam discharge. Quality of drilling mud cleaning is improved.
EFFECT: improved quality of drilling mud cleaning.
FIELD: oil and gas extractive industry.
SUBSTANCE: device has pump connected by pipeline for feeding drilling solution, centrifuge with inlet, draining and slurry branch pipes, loading cone with filter and side channel, circulation chute with flooded wall and mixer, provided with mixing blades, receiving tank at same level with bottom of circulation chute, slanted vibration chute mounted below centrifuge above circulation chute on resilient support. On pipeline for feeding drilling solution lock-adjusting armature, flow meter and hydraulic mixer with line for feeding technological liquid, connected to pump for feeding technological liquid and provided with lock-adjusting armature and flow meter, are placed. In zone of effect of mixing blades of mixer a mixing tank is placed at same level with bottom of circulation chute. Pump is placed in circulation chute in direction of drilling solution flow with possible feeding of drilling solution from receiving tank. Mixing blades are mounted horizontally in mixing tank. Receiving and mixing tanks are provided with draining valves in bottom portions.
EFFECT: higher safety.
FIELD: well drilling technologies.
SUBSTANCE: method includes circulation of drilling mud in a well and separation of gas phase in cleaning system, in cleaning system a flow of drilling mud is let through pseudo-liquefied layer of hydrophobic absorbent, having positive float ability, wherein circulation of granules is formed for absorbent regeneration. As said absorbent polyethylene, plamylone, Teflon are used. Said absorbent and plurality of its granules are selected from condition of maximal absorbing ability for gas phase composition. Height of said layer is changed dependently on effect of drill mud degassing. Device for degassing drill mud has a tank, which drill mud flow enters, with concentric aperture in the bottom, provided with branch pipe for outlet of degassed drill mud, in said tank a layer of hydrophobic absorbent granules is positioned, and said tank has diameter, equal to three diameters of jet d of entering flow of drilling mud, outer bandage to provide for its float ability, and said branch pipe has pass diameter, equal to d.
EFFECT: higher efficiency and effectiveness.
2 cl, 1 tbl, 1 dwg
SUBSTANCE: drill mud is processed using complex device, mounted on force pipe of drilling pump and providing for turbulent flowing mode for drill mud. Drill mud is affected with acoustic field with oscillations frequency 20-24 kHz for pulverizing argillaceous particles and destroying hydrogenous connections between water molecules. Then magnetic field with intensity 2000 E, formed by constant magnets for forming of cluster structures. Device for processing drill mud has polychlorinevinyl pipe for letting through of drill mud with deflectors and ultrasound emitter positioned therein. Permanent magnets are made U-shaped and mounted outside polychlorinevinyl pipe. Ultrasound emitter is mounted before permanent magnets.
EFFECT: higher quality.
2 cl, 1 dwg, 1 tbl
FIELD: well drilling equipment, particularly arrangements for treating drilling fluids outside the borehole.
SUBSTANCE: method involves performing the first cleaning stage with the use of vibrosieve; performing the second cleaning stage with the use of hydrocyclone desander and performing the third stage with the use of desilter; cleaning drilling mud with the use of centrifuge and conveying the clean drilling mud to accumulation vessels for following drilling; circulating drilling mud through process vessels inside the well; performing drilling mud cycling outside well along with drilling mud circulation through process vessels inside the well by supplying the clean drilling mud into process vessels adapted for receiving drilling mud from the first, the second and the third cleaning stages to dilute thereof with drilling mud exiting the well in amount enough to equalize density of drilling mud to be cleaned. After drilling mud cleaning in desander and desilter the drilling mud is additionally cleaned in serially arranged hydrocyclone desilter forming the forth cleaning stage. Drilling mud cleaning device comprises gutter connecting well head with serially arranged vibrosieves, hydrocyclone system including hydrocyclone desander and desilter, centrifuge with process vessels for receiving drilling mud, mud pumps serially installed in accordance with cleaning stages, process drilling mud accumulation vessels joined into circulation system for drilling mud movement through the well. Circulation system provides drilling mud cycling outside the well along with circulation thereof through the well with the use of mud pump and mud pipelines, which supply the clean drilling mud from process accumulation vessels in process vessels receiving drilling mud from the first, the second and the third cleaning stages to dilute thereof with drilling mud exiting the well. Hydrocyclone system is additionally provided with serially installed hydrocyclone desilter adapted to separate fine sludge particles and forming the forth drilling mud cleaning stage.
EFFECT: increased quality of drilling mud cleaning.
4 cl, 6 dwg
FIELD: liquid drilling waste treatment equipment.
SUBSTANCE: plant has centrifuge with loading funnel, vessel rack for coagulant and flocculant, vessel rack for acid and alkaline neutralizing agent, dual-chamber reaction vessel with samplers, as well as flowmeter, pressure-gauge and check valves. Vessels are provided with mechanical and pneumatic agitators. Chemical treatment of liquid drilling waste is performed in one chamber of reaction vessel simultaneously with supplying thereof from another chamber into centrifuge. Vessel racks, reaction vessel and centrifuge are arranged at different heights so that liquid solutions may flow under gravity between them.
EFFECT: increased quality of liquid drilling waste treatment.
FIELD: oil production industry, particularly for drilling mud cleaning during oil and gas well boring.
SUBSTANCE: method for removing particulate contamination from mud inside sucking pipe provided with pump and storage vessel involves installing composite acoustic noise transducer to transform noise of quarter-wave resonators arranged along a circle inside suction pipe of mud pump; converting low-frequency drilling pump noise into ultrasound; forming standing wave in suction pipe for length equal to length of composite acoustic noise transducer; exerting influence of ultrasonic standing waves on particulate contamination coagulation and precipitating thereof into storage vessel.
EFFECT: increased cleaning efficiency.
5 dwg, 1 ex
FIELD: oil production industry, particularly drilling mud cleaning during oil and gas well drilling.
SUBSTANCE: method for drilling mud cleaning in suction tube provided with pump and mud pit involves installing composite acoustic noise transducer made of quarter-wave resonators in suction tube of mud pump; converting low-frequency noise generated by mud pump in ultrasound; forming ultrasonic standing waves in suction tube over length equal to composite acoustic noise transducer length; applying standing ultrasound wave action in suction pipe on mechanical impurity coagulation and precipitating thereof in mud pit.
EFFECT: increased cleaning efficiency.
5 dwg, 1 ex
FIELD: oil and gas industry, particularly mud logging during gas or oil well drilling.
SUBSTANCE: degasser comprises vertical cylindrical body and gas separation unit arranged in the body, which separates gas from gas-and-liquid mixture. The body has outlet gas pipe and inlet windows for gas-and-liquid mixture introduction. The separation unit is made as pipeline concentrically installed in the body and provided with air inlet channel located in lower pipeline part. The air inlet pipeline is defined by two plates and flow swirlers arranged in-between. The pipeline is serially connected to heat-exchanger and compressed air source.
EFFECT: increased operational efficiency and reliability and reduced power inputs.
6 cl, 2 dwg
FIELD: oil and gas well drilling.
SUBSTANCE: degassing unit comprises body with opened bottom, which is arranged in reservoir for degassed flushing fluid, inlet nipple to supply gas-contaminated flushing liquid. The inlet nipple is located in body center. Degassing unit also has deflector secured inside the body over above nipple and plates for flushing fluid flow turbulizing connected to inner body walls under the deflector. The deflector is made as cup-shaped member with concave parabolic surface facing free end of above nipple. Perforated conical dispenser is connected to outer surface of the nipple.
EFFECT: increased gas separation efficiency.
FIELD: oil and gas well construction, particularly devices to intensify chemical reagent dissolving in liquid, to activate sticky cement and powder and granular material dispersion.
SUBSTANCE: hydraulic disperser comprises hollow two-stage body with connection threads formed at body ends and cup installed in body section having greater diameter so that the cup is spaced from body wall and cup bottom faces outlet orifice of body section having lesser diameter. The cup is provided with inner and outer connection threads formed from opened end side of the cup. Opposite nozzles are installed in side orifices of the cup so that nozzle axes are transversal to central body axis. Outlet orifice of body section having lesser diameter is provided with screwed-on nozzle. Cup bottom from outer side is provided with wear-resistant screen insert, which is opposite to body nozzle. Process orifices sealed with plugs are formed in body section having larger diameter in front of side nozzles.
EFFECT: increased efficiency, simplified structure and fabrication technique.