Procedure for sump building at construction of oil-gas condensate deposits

FIELD: oil and gas production.

SUBSTANCE: procedure consists in digging foundation pit in soil and in hydro-insulation of its cavity. Also, here there is used processing waste of drilling in form of mixture of spent process solution with cuttings - slime. Preliminary, waste is mixed with sand till obtaining uniform mass, at ratio: sand 50-80%, spent drill agent with slime 20-50%. Further, solid phase is mixed with sand to a condition of a soft clay and produced mixture is cured during 10-15 hours. Successively, cured mixture is transported to a prepared from sand foundation pit-sump of gas-flare (sump of GF). A bottom and internal slopes of sump of GF surface are lined with this mixture at height of at least 0.5 m. The cavity of the GF sump is hydro-isolated. Its strengthened structure is formed through process specified gas-hydro-dynamic analysis of a well followed with combustion of gas flare, by means of which the constructed bottom and internal slopes of GF sump surface are thermally burned in a flare flame.

EFFECT: reduced prime cost and increased reliability of ecological safety of environment.

4 cl

 

The claimed invention "method of construction of the barn in the regeneration of oil and gas condensate fields" refers to the protection of the environment during the construction of oil and gas wells in the regeneration of hydrocarbon deposits and may find application in particular in the construction and operation of sumps, related drilling operations.

A known way of eliminating the excavation of sump drilling wastes, which removed the topsoil, accumulate waste in earthen barn, the area of the drilling site is covered with a layer of gravel in the pit erect impervious clay screen, the clarified liquid phase of the waste is evenly sprayed over the drilling platform to the return of topsoil, utverjdayut thickened phase of the waste and on the top solid layer put an impenetrable screen, before filling with thickened phase primer on the screen, put the drain cover (see Patent RF №2123574, CL EV 21/06, SC 7/02, 1998).

The disadvantage of this method is the low ecological protection of the environment.

This disadvantage is due to the difficulty of ensuring the tightness of the pit, causing a real danger of ingress of contaminants into the environment (the hydrosphere).

There is also known a method of forming the protection is the main screen (see RF patent №2255178, IPC EV 3/16, publ. 27.06.2005), consisting in the preparation of waterproofing mixture containing waste polyethylene, laying it on the basis of storage and heat treatment, when the mixture of waste polyethylene - 70-99% and propylene - 1-30%, after laying the Foundation of a warehouse subjected to heat treatment at the temperature of melting of the mixture or the surface layer of the repository.

The disadvantage of this method is the high cost and low reliability of the protective screen, causing low ecological protection of the environment.

This disadvantage is due to the fact that the components of the waterproofing mixture are expensive components, in addition, shipping them to the place of production requires large transport costs, and the resulting protective screen untrusted storage of drill cuttings as polyethylene eventually gets old and cracks, that does not preclude the introduction into the structure of the roots of plants, in addition, a protective shield is made of components constituting the waterproofing mixture at low temperatures can crack, so it is unacceptable in the Far North.

Known also adopted for the prototype method of construction and operation of complex earth barns-storage of waste drilling and formation fluids, in which with the passage of pits in the mineral soil, waterproofing cavity pits clay based on the results of engineering-geological surveys and their subsequent filling and prior to the operation of sump formation fluid during the period of maximum evaporation of moisture from the barn-drive drilling wastes partially pumped drilling waste water, process it coagulant and flocculant with the simultaneous introduction of a fine powdery material, releasing the formed liquid in a container with an open top that is installed on the bottom in the standby mode of operation empty of sump reservoir of fluid to fill it to a depth of 0.10-0.30 m, stop the release of liquid, defend it from the gravitational separation of the resulting precipitate, forming additional colmatage layer clay impervious screen, maintain the earthen barn drive formation fluid to the evaporation of the liquid, repeat the cycle no earlier than 48 hours after thickening additional colmatage layer, stops the release of treated waste water for 15-20 days prior to the drilling of intervals in which geological and engineering outfit to predict neftegazonakoplenija, and before completion (see RF patent №2138612, IPC (6) EV 21/06, publ. 27.09.1999).

The disadvantage of this method is the high itself is cost and low reliability, causes of inadequate environmental protection the environment.

This disadvantage is due to the fact that the waterproofing cavity pit barn clay does not provide the reliability of environmental protection of the environment because of an impervious screen of clay does not protect groundwater from contamination liquid waste drilling, nakaplivaemykh in the pit, dug in permeable sandy soil, which does not exclude the introduction of its structure and clay cavity excavation of roots of plants that violate anti-filtration screen, in addition, the known method requires a large financial cost and time in geological engineering and processing drilling waste water coagulant and flocculant with the simultaneous introduction of a fine powdery material that requires additional equipment, costs and additional business resources.

The technical result of the claimed invention "method of construction of the barn in the regeneration of oil and gas condensate fields" is to reduce the cost and improve the reliability of environmental protection the environment.

The technical result is achieved by the fact that in the known method of construction of the barn in the regeneration gas fields, based on the scraps the promotion of production and technological drilling wastes, including the preparation of the pit in the ground and waterproofing cavity, according to the invention using the production technology of drilling waste in the form of a mixture of spent process solution from drilled rock-cuttings, which are initially mixed with sand to obtain a homogeneous mass, the ratio of sand 50-80%, waste drilling mud slurry 25-55%, then increase the mixing of the solid phase with sand to the state mint clay and the mixture is left to Mature for 10-15 hours, then take out the received williamsuse the mixture on the prepared sand pit-barn gas-flare installation (barn HFCs), which make the lining of the bottom and inner slope surfaces barn HFC this mixture with a height of at least 0.5 m, then hydro-insulation of cavity barn HFCs and the formation of his strength patterns by carrying out technologically provided gas dynamic research wells that accompany combustion gas torch, which produce heat burning in the flame of a torch constructed of the bottom and inner slope surfaces barn HFCs, and uniformity of mass is a mixture of sand with the spent mud slurry is determined visually, and mixing industrial-technological waste is Urena, in the form of a mixture of mud with cuttings rock with sand until a homogeneous mass is produced by the dredge slurry in the barn, in addition, the lining of the bottom and inner slope surfaces barn HFC mixture produced first by using a bulldozer, and then the excavator.

Between the features and achieved technical result is the following causal link.

Unlike analogs and prototypes using industrial-technological waste from drilling wells, namely, the disposal of drilling cuttings-cuttings of spent process solution, resulting from the drilling operations, and further mixing them with sand allows you to quickly get a cheap material for lining the bottom and inner slopes of the surface structures of the barn in the regeneration of oil and gas condensate fields and simultaneously be clear from production and technological waste drilling environment that improves the environment in the territories of the field regions. The set of features in the form of thermal firing the mixture obtained from very cheap components: sand and recyclable industrial-technological drilling waste, provides for the implementation of the proposed method the facility is of the barn in the regeneration gas fields getting cheap inert construction material, a balanced composition of the waste, polluting the environment, which goes directly to improving the reliability of environmental protection to the environment as thermal firing the mixture obtained without the use of special equipment, and use only the power gas torch with gas dynamic research technology driven technology test wells, provides a fast, cheap, non-waste production of construction products in the form of durable water resistant inert ceramic composite material, which creates a solid membrane screen made of ceramic, not erodible sediments, protecting groundwater from contamination, liquid drilling waste, nakaplivaemykh in the barn HFCs. Created by the proposed method membrane screen eliminates the introduction of its structure plant roots, not affected by temperature changes, therefore, provides protection of groundwater against pollution of liquid drilling waste, nakaplivaemykh in the barn HFCs, dug in permeable sandy soil, i.e. improves environmental protection, additionally, the creation of such a screen does not require additional financial costs and time. It should also be noted that the proposed method can not only reduce the cost and at the same time, eliminate pollution, but also to make further recyclable waste drilling cuttings-cuttings of spent process solution, resulting from the drilling operations, in an inert composite material, binding in its structure pollutants, preventing their migration in the environment. Use as a source of physico-chemical processes thermal burning of waste, which use thermal energy of the gas torch with gas dynamic research, technology driven technology test wells, significantly reduces the cost of the proposed method, unlike objects analogs and prototypes.

Conducted by the applicant's analysis of the prior art, including searching by the patent and scientific and technical information sources and identify sources that contain information about the equivalents of the claimed invention, has allowed to establish that the applicant had not found the source, which is characterized by symptoms that are identical to all the essential features of the claimed method of construction of the barn in the regeneration of oil and gas condensate fields. According to the applicant's information, the set of essential features of the claimed invention "Method. the barn in the regeneration of oil and gas condensate fields" is not known from the prior art, that allows to make a conclusion about conformity of the invention, the criterion of "novelty". The definition from the list of identified unique prototype, as the most similar set of features analogue, has identified a set of essential towards perceived by the applicant to the technical result of the distinctive features in the claimed method of construction of the barn in the regeneration gas fields, set forth in the claims. Therefore, the claimed invention "method of construction of the barn in the regeneration of oil and gas condensate fields" meets the criterion of "novelty."

To check the compliance of the claimed invention, the criterion of "inventive step", the applicant conducted an additional search of the known solutions to identify signs that match the distinctive features of the prototype of the characteristics of the claimed method of construction of the barn in the regeneration of oil and gas condensate fields. The search results showed that the claimed method of construction of the barn in the regeneration of oil and gas condensate fields not apparent to the expert in the obvious way from the prior art because the prior art defined by the applicant, not the influence provided the essential features of the claimed invention transformations for Costigan what I technical result.

Therefore, the claimed invention "method of construction of the barn in the regeneration of oil and gas condensate fields" meets the criterion of "inventive step".

Thus, the presented data suggest the implementation of the use of the claimed method of construction of the barn in the regeneration gas fields conditions, as the inventive method is characterized in the claims, i.e. confirmed the possibility of its implementation using the steps described in the application examples. Means embodying the claimed method of construction of the barn in the regeneration of oil and gas condensate fields, its implementation is able to achieve perceived by the applicant of the technical result, namely reducing the cost and improving the reliability of environmental protection the environment, therefore, the claimed invention "method of construction of the barn in the regeneration of oil and gas condensate fields" meets the condition of "industrial applicability", which further confirms the set of essential features that characterize the invention "method of construction of the barn in the regeneration of oil and gas condensate fields, which can be reused in technologically to enable production is the tion of the construction of barns in the regeneration of oil and gas condensate fields with obtaining a technical result, lowering the cost and improving the reliability of environmental protection the environment.

The essence of the invention "method of construction of the barn in the regeneration of oil and gas condensate fields" is illustrated by examples of specific performance.

EXAMPLE 1. The method of construction of the barn when a gas condensate fields, based on the utilization of production technology of drilling wastes in the form of a mixture of mud with cuttings rock (sand, claystone, siltstone, clay and so on), which when injected into the slurry barn under the influence of gravity redistributed vertically, so at the very top was the liquid phase, which in the period of positive temperatures were deleted. The preparation of the mixture of spent process solution from drilled rock-cuttings was carried out as follows. First dredge slurry barn mixed with medium sand waste drilling mud slurry to obtain a homogeneous mass. Components used in the following ratio: medium-grained sand 75%, waste drilling mud with silt 25%. Mixing the solid phase with sand brought to the state mint clay and the resulting mixture was left to Mature for 12 hours, the resulting williamsuse mixture is Vasili on prepared out of the sand pit-barn gas-flare installation (barn HFCs), in which the height of the inner slope was equal to 1.0 meters Further, you first use a bulldozer, and then with the help of an excavator made lining of the bottom and inner slope surfaces barn HFC received miliavskaya mixture. And then gidroizolirovat cavity barn HFCs and formed its prochnostyu structure. This was performed technologically provided gas dynamic research well, which was accompanied by a burning gas flame. By combustion of the gas torch in his flame produced thermal annealing built bottom and inner slope surfaces barn HFC whose height was equal to 1.0 m

EXAMPLE 2. The method of construction of the barn when a gas condensate fields, based on the utilization of production technology of drilling wastes in the form of a mixture of mud with cuttings rock (sand, claystone, siltstone, clay and so on), which when injected into the slurry barn under the influence of gravity redistributed vertically, so at the very top was the liquid phase, which in the period of positive temperatures were deleted. The preparation of the mixture of spent process solution from drilled rock-cuttings was carried out as follows. First dredge slurry barn mixed with medium sand, otruba the p drilling mud slurry to obtain a homogeneous mass. Components used in the following ratio: sand 70%, waste drilling mud slurry 30%. Mixing the solid phase with sand brought to the state mint clay and the resulting mixture was left to Mature for 14 hours, the resulting williamsuse mixture were taken at pre-prepared sand pit-barn gas-flare installation (barn HFCs), in which the height of the inner slope was equal to 1.2 meters Further, you first use a bulldozer, and then with the help of an excavator made lining of the bottom and inner slope surfaces barn HFC received miliavskaya mixture. And then gidroizolirovat cavity barn HFCs and formed its prochnostyu structure. This was performed technologically provided gas dynamic research well, which was accompanied by a burning gas flame. By combustion of the gas torch in his flame produced thermal annealing built bottom and inner slope surfaces barn HFC whose height was equal to 1.2 m

The use of the proposed invention "method of construction of the barn in the regeneration of oil and gas condensate fields" allows you to reduce the cost of construction of the barn in the regeneration gas fields, as well as to improve the reliability of environmental protection the particular environment through construction of the slopes and the bottom of the barn from the material, a balanced composition of the waste, polluting the environment, contain cheap components that are useful in the regeneration of oil and gas condensate fields.

1. The method of construction of the barn in the regeneration gas fields, based on the recycling of industrial-technological drilling wastes, including the preparation of the pit in the ground and waterproofing cavity, characterized in that use industrial-technological drilling waste in the form of a mixture of spent process solution from drilled rock-cuttings, which are initially mixed with sand to obtain a homogeneous mass, the ratio of sand 50-80%, waste drilling mud slurry 20-50%, then increase the mixing of the solid phase with sand to the state mint clay and the mixture is left to Mature for 10-15 hours, then take out the received williamsuse the mixture on the prepared sand pit-barn gas-flare installation (barn HFCs), which produces the lining of the bottom and inner slope surfaces barn HFC this mixture a height of at least 0.5 m, then hydro-insulation of cavity barn HFCs and the formation of his strength patterns by carrying out technologically provided gas dynamic studies the well is s, that accompany combustion gas torch, which produce heat burning in the flame of a torch constructed of the bottom and inner slope surfaces barn HFCs.

2. The method of construction of the barn when a gas condensate deposits according to claim 1, characterized in that the uniformity of mass - a mixture of sand with the spent mud slurry is determined visually.

3. The method of construction of the barn when a gas condensate deposits according to claim 1, characterized in that the mixing industrial-technological drilling wastes in the form of a mixture of mud with cuttings rock with sand until a homogeneous mass is produced by the dredge slurry in the barn.

4. The method of construction of the barn when a gas condensate deposits according to claim 1, characterized in that the lining of the bottom and inner slope surfaces barn HFC mixture produced first by using a bulldozer, and then the excavator.



 

Same patents:

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

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.

1 dwg

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.

7 dwg

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.

5 dwg

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.

5 dwg

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

FIELD: mining.

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: 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.

1 dwg

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

FIELD: geology.

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.

1 dwg

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

Degasser // 2271434

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.

1 dwg

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.

1 dwg

Up!