Processing method of drilling wastes on territory of cluster site
SUBSTANCE: invention relates to construction and processing (deactivation) of drilling wastes together with secondary wastes of thermal utilisation of oil slurries with ash and slag mixtures so that road-building composite materials are obtained. The task at which this invention is aimed is to create a processing method of drilling wastes on the territory of a cluster site. The processing method of drilling sludge on the territory of the cluster site involves arrangement at the site of components of the mixture and a processing capacity, placement of drilling sludge into the capacity, addition to the sludge of components and mixing of the mixture with an excavator so that road-building composite material is obtained; with that, the processing capacity is installed into soil so that its upper edge is elevated above relief to the height of not more than 0.5 m.
EFFECT: reduction of costs for transportation of wastes to the nearest sludge pit, a possibility of processing of drilling wastes immediately after their formation, a possibility of using secondary materials obtained as a result of processing at the site.
6 cl, 7 dwg
The invention relates to the construction and recycling (disposal) of waste drilling in conjunction with a secondary thermal utilization of waste sludge ash and slag mixtures, obtaining road construction composite materials that can be used for construction of subgrade and road base reinforced on the roads (I-V categories II-V road-climatic zones, as well as coatings on the roads of IV-V categories as a material for construction of embankments, subgrade and strengthening of soil foundations construction and other sites, reclamation of sludge pits in the territories of oil and gas deposits.
From the patent of the Russian Federation 2303011 known building material "Burrit, including drill cuttings, cement and urea-formaldehyde foam, characterized in that it contains drilling mud density from 1.3 to 1.8 kg/DM3, urea-formaldehyde foam with a density of 10-30 kg/m3in the amount of 10-25% by volume of drill cuttings, cement in an amount of 10-20% by volume of drill cuttings and optionally a mineral filler with a particle size of from 2.7 to 3.1 mm, selected from the group consisting of sand and crushed granite, in the amount of 10-20% by volume of drill cuttings.
The mixture is prepared by adding to the drilling mud with a density of from 1.3 to 1.8 kg/DM3when s�constant stirring urea-formaldehyde foam, having a density of 10-30 kg/m3in the amount of 10-25% by volume of drill cuttings; cement in an amount of 10-20% of the volume of drilling waste; mineral filler in an amount of 10-20% by volume of drill cuttings. Mixing of drill cuttings and capsulesbuy components to obtain a homogeneous, rapidly getting denser mass produced with the help of an excavator due to the motion of the excavator bucket in the longitudinal and transverse directions.
From the patent of Russian Federation №2399440 known mixture for obtaining a building material comprising drill cuttings, mineral additive, an accelerator, a desiccant and a hardener, characterized in that it contains as mineral supplements loam, sand, sandy-clayey fraction, as the accelerator is calcium chloride and/or sodium, as the desiccant is at least one of: peat, mineral wool, slag wool, cellulose fibers, silica gel, penoizol, as a hardener, cement and/or bitumen, and additionally - carboxymethylcellulose - CMC and/or polyvinylacetate - PVA and exhaust technology solution density of 1.08-1,86 t/m3and drilling waste water resulting from production drilling operations, with the following ratio of components, wt.%:
|specified technological solution||Of 1.0 to 40.0|
|indicated mineral Supplement||0,9-45,0|
|the specified desiccant||1,0-38,0|
|CMC and/or PVA||0,1-0,2|
|the specified accelerator||1.0 to 2.0|
|cement||From 1.0 to 22.0|
|these waste water drill||else|
The closest analogue of the claimed invention is the construction material gerontology fortified, disclosed in the patent of the Russian Federation 2471737, including drilling mud density from 1.3 to 1.8 kg/DM3, cement as the main binder in the amount of 4-12% by weight of the mixture, dehumidifier plaster in the amount of 2-4% by weight of the mixture, mineral filler - natural sand in the amount of 40-70% by weight of the mixture.
The object to which the present invention is to provide a method of processing drilling waste on the territory of cluster pad.
The technical result of the present invention are: reducing the cost of Tr�spartanovka waste to the nearest mud pits, in connection with the processing of on-site cluster pad (transportation distance in this case is up to 1 km); the possibility of processing drilling waste immediately after their formation, thereby reducing the cost of payments for negative impact on the environment; the possibility of using the resulting processing at the site of secondary materials, in accordance with the scope specified in the documentation for this product (THE STP), thereby reducing the cost of supply of the soil (sand), applying the obtained material.
The claimed technical result is achieved by providing a method of processing drilling waste on the territory of cluster pad, comprising placing at the site of mixture components and capacity for processing, the premises in the capacity of drill cuttings, adding to the slurry of the components and stirring the mixture by an excavator with obtaining road construction composite material, and the capacity for processing is installed in the ground so that its upper edge rises above the ground to a height of not more than 0.5 M. Preferably, road construction material includes drilling mud density from 1.3 to 1.8 kg/DM3, cement as the main binder in an amount of 5-15% by weight of the mixture, thermal utilization of waste sludge (W�losec) a density of from 1.2 to 1.6 kg/DM 3in the amount of 14.5-34% by weight of the mixture, a mineral filler and a sorbent complexing agent, where the sorbent complexing agent used organic fibrous (peat) the sorbent in the amount of 2-4% by weight of the mixture. Preferably, the pad has a size of at least 20×20 m. Preferably, the upper edge of the receptacle is placed a bump. Preferably, the side walls of the container outside is reinforced with logs. Preferably, the components of the mixture are placed close to the excavator at a distance of the length of the transfer arrows.
Brief description of the drawings
Fig.1 General scheme of processing of drill cuttings;
Fig.2 is a diagram of the area of recycling of drill cuttings with obtaining technology JERUSALEM;
Fig.3 layout of containers for the recycling of drill cuttings on the technology of JERUSALEM;
Fig.4 applications of reinforced soil road construction in the construction and repair of well pads; And wherein the waterproofing of the well pads, B - repair of pads when surface subsidence in the area wellheads, strengthening of slopes of embankments, G - filling of Foundation pads;
Fig.5 the Use of reinforced soil road construction in reclamation of sludge pits with a preliminary excavation of drill cuttings from the barn;
Fig.6 the Use of reinforced soil road�Stroitelnoe in reclamation of sludge pits without prior excavation of drill cuttings from the barn;
Fig.7 typical variant of a road embankment using soil fortified road construction; where A is filling road base, B - strengthening of slopes of the roadway.
The implementation of the invention
Disposal of drill cuttings together with the waste thermal utilization of sludge, with the same technology and recipe washing liquid pertaining to IV or III class of hazard, with environmentally friendly material, is produced by binding and neutralizing toxins in the monolithic structure of the consolidated material and removal of their migratory activity.
DSKM - artificial material obtained by mixing career in mixing devices, either in landfills or directly on the road (with the use of cutters, excavators and graders) drill cuttings together with ash and slag mixtures with cement or other inorganic binding agents and additives of active substances and sorbents with subsequent packing and seal if brought to the optimum moisture content, and answering on a project or interim terms of normalized quality indicators on strength, frost resistance and environmental safety. In composition, structure, physical-mechanical characteristics and other properties, and applications, methods for preparing DSKM I�is a kind of reinforced soil or processed materials in accordance with GOST 23558-94.
Used in the composition of the claimed composition of the drilling sludge (SS) is temacapulin (from semi-liquid to viscous consistency) and paste comprises particles of drill cuttings and waste drilling mud (ARR). The composition of the solid phase BSH are different degrees of dispersion (colloid to 5-10 mm) particles of drill cuttings and introduced into the washing liquid mud powder (bentonite, montmorillonite), and insoluble and poorly soluble additives (calcium carbonate, barite, etc.). The liquid phase BSH is formed due to the discharge of a certain amount of drilling mud and waste water when washing equipment.
The composition of the SB is composed of particles of drill cuttings and drilling mud, their ratio may be different, for example, drill cuttings deposits of OAO "TNK-Nizhnevartovsk" contains, wt.%:
- cuttings - 55-75;
- drilling fluid exhaust (EX) - 25-45.
In this case, the ARR includes the following components: sand in the amount of 3-4%, water in an amount of 90 to 92% and colloidal phase low density - 5-6%, which was composed of the following chemicals: bentonite mud powder (for example, brand PMBA), drugs CMC (connection polyanionic cellulose), soda and caustic soda, chalk, barite, water-soluble and high-molecular polymer compound (polyacrylamide,polyacrylonitrile), salt (potassium chloride, sodium chloride) and other substances.
The plant uses SD having a density in the range of 1.3 to 1.8 kg/DM3and humidity in the range of 30-60%.
Used in the composition of the claimed composition of the mixture of ash (SSS) are formed by thermal treatment (firing) of wastes generated during oil and gas (oil-contaminated soils and oil sludge cleaning of pipelines and tanks from oil and oil products, and drill cuttings).
SSS consist of ash component (particles of ash and slag of less than 0,315 mm) and a slag comprising: a slag sand - grain size from 5 mm 0,315; slag crushed - grains larger than 5 mm. Residual oil content in TSS not exceed 0.5%. Additionally to this in a mixture of sorbent-complexing agent, SSS can be considered as a desiccant, in the amount of 30-40% by weight of the mixture, which are the tonnage of waste requiring disposal, promising for applications because they have developed specific surface area and hydraulic binding properties (reactivity). These materials in combination with the main binder (cement) bind significant amounts of water and impurities, making DM in inert and durable composite material.
Used as the main binder in the composition DSCM cementarnica strength, the resistance, in combination with a liquid binder (liquid glass) addresses the fluidity BSH, gives the material strength properties, binds toxicants and ABOUT components, reducing the migration of contaminants into the environment.
Used as a sorbent of organic complexing fibrous sorbent (crushed dried peat, produced by TU 1392-005-48952916-2001), a density of not more than 180 kg/m3eliminates migration activity of pollutants, will destroy residual oil content.
In a preferred embodiment of the invention as sorbent-complexing agent is used in organic fibrous (peat) sorbent.
Use in the claimed composition of the mixture as mineral filler is more common and has a wider range of fractions of dispersed natural non-cohesive soils - sand according to GOST 25100-95 reduces the cost DSCM. In accordance with table B10 GOST 25100-95 particle size distribution of natural sand (size and content of the grains) can be arbitrary, i.e. can be used Sands from gravel to silt. The base case mineral filler is the choice of the most widespread in the oil and gas regions of Western Siberia of fine sand and/or silt with x�perform: size of particles larger than 0.10 mm - at least 75% for small or, respectively, less than 75% for silt. Moreover, the dosage of sand (0-30% by weight of the mixture) is selected based on its granulometric composition and SB on the condition of obtaining the number of the plasticity of the mixture of the order of 7-12, i.e. optimal granulometry of the mixture corresponding to a light sandy to loam that is most favorable for soil stabilization, including technogenic, cement. Administered amount of filler depends on the moisture content and density BSH, for example, with a minimum density of 1.3 kg/DM3and maximum humidity BSH (70%) enter the maximum amount of sand - 30% by weight of the mixture; at a maximum density of 1.8 kg/DM3and, accordingly, the minimum humidity (40%) flow rate of sand is 0-10% by weight of the mixture. Also the flow of sand is dependent on the strength and scope of the final product in the construction of buildings.
In the claimed compositions may use different grades of cement. The basic variant of the binder is Portland cement, slag cement and Portland cement with mineral additives according to GOST 10178, sulfate and pozzolan cements in accordance with GOST 22266, as well as cements for mortars according to GOST 25328 grades not lower than 400 for coatings and 300 bases.
To improve the properties and performance DSCM improving additives used, including as microd�beside used:
- calcium chloride, sodium chloride, calcium nitrite (up to 2% by weight of the mixture), which accelerate the curing of the material, and antifreeze additives are able to produce DSCM in the winter.
The above microadditives are powder bulk substances that in the North it is preferable from the point of view of their transportation and the introduction with stirring compositions.
To improve DSCM can be used and other microadditives, including those supplied in liquid form (solutions, emulsions):
- organogenic-siloxanes (NGL 136-41, NGL 136-M, manufactured according to GOST 10843-76, THE 6-02-694-76), in the amount of 0.5% by weight of the mix;
- liquid glass (sodium silicate) in an amount up to 1% by weight of the mix. These additives improve the water resistance and water resistant, reduce water absorption and permeability, which eliminates the suffusion and leaching of toxic components from ABOUT compositions;
- lime powdered quicklime, gypsum (which binds water, neutralizing waste);
DSCM, depending on the magnitude of the total specific effective activity of natural radionuclides (Aeff) contained in DSCM, processed materials, soils, used in:
Andeffto 740 Bq/kg for the construction of roads and areas without Ogre�subject to limits;
AndeffSt. 740 to 2800 Bq/kg for oilfield road construction outside built-up areas and areas of projected building.
The use DSCM for the construction of pavement and subgrade of roads, playgrounds and other facilities contributes to the improvement of environmental safety and reliability of structures, eliminates the possibility of getting components BSH and waste into the environment.
Thus, thanks to the invention made possible the transformation of drill cuttings and waste thermal utilization of sludge in an inert composite material linking in the structure of the pollutant, excluding their migration in the environment.
Method for processing drill cuttings comprising the following steps (Fig.1):
- The accumulation of drill cuttings (BSH).
- The addition and mixing of components of a mixture by an excavator.
- The resulting mixture is moved to the stack to complete the hardening process.
- Made material stored at temporary storage sites and transport to the dumping area features.
For the production DSCM, JERUSALEM in the territory of cluster pad:
- Equipped Playground processing:
Imported materials (components): sand 4, cement 3, NGL 136-41 (or others) 2.
In the container 1 supplies drilling mud (or minim�is out of the barn).
In drilling mud components are added
(the latter may be any other Supplement).
- Mixing of components of the excavator until blended.
- Excavation and stacking.
In one of the embodiments of the invention, the method of processing drilling waste includes recycling of drilling waste to produce road-building composite material comprising drilling mud density from 1.3 to 1.8 kg/DM3, cement as the main binder in an amount of 5-15% by weight of the mixture, thermal utilization of waste sludge (slag) with a density of 1.2 to 1.6 kg/DM3in the amount of 30-40% by weight of the mixture, a mineral filler and a sorbent complexing agent, where the sorbent complexing agent used organic fibrous (peat) the sorbent in the amount of 2-4% by weight of the mixture.
In a preferred embodiment of the invention the components of the mixture are placed close to the excavator at a distance of the length of the transfer arrows.
For processing drilling waste settling, leveled the ground, not less than 20 X 20 m. the site is subdivided into sections stockpiling and storage of materials, processing site, access roads, the site for storage of materials. Allowed the expansion of the site through the use of the resulting secondary �of material. 1 capacity for processing is installed in the ground 7. Preferably, the container has a volume of 40 m3and dimensions of 6.4 x 2.5 x 2.5 m NGL 2 is stored in metal barrels for 0.2 m3. Cement stored in bags FIBC, sand - bulk with a maximum height of 2 m, SSS - in bulk with a maximum height of 2 m. DSCM 6 is formed in bulk with a maximum height of 4 m (Fig.2).
The upper edge of the tank should be elevated above the terrain to a height of no more than 0.5 m, in order to avoid collapse of the container under pressure of a ground - side walls on the outside are reinforced by logs. The upper edge of the container is reinforced concrete beam or pipe serving as a bump stop 8 during discharge of drilling wastes (Fig.3).
Posted on shrub swamps grounds eventually "shrink" in the peat, wellheads are exposed.
To restore the design level can be agreed with the oilers places of cluster pad be removed by excavating the soil and fill the recess JERUSALEM.
After setting the excavated soil is levelled by a bulldozer, platform 8 is planned (Fig.4).
During construction of well pads in areas with shallow groundwater, in water protection zones is the waterproofing of the bases.
As a waterproofing material, usually a polymer film is used, which does not always provide the necessary �degree of waterproofing due to its low mechanical strength.
More reliable sealing can be accomplished by using JERUSALEM 9 with the addition of liquid glass to improve waterproofing properties of the composite material.
In water protection zones is advisable to carry out the isolation of JERUSALEM 9 bottom and side layer of the composite polymer film (Fig.4).
During the construction of cluster pad allowed the use of JERUSALEM 9 for construction of the Foundation and strengthening of embankments is to save imported construction land (Fig.4).
The use of JERUSALEM in reclamation of drilling sludge pits is made of two main schemes - with a hollow drill cuttings from the body of the barn and processing of drill cuttings in the body of the barn.
When pulling drill cuttings 13 out of the barn, its processing is carried out on-site processing and JERUSALEM received is placed in a barn by a method of this kind. This method is applicable for large barns, while the limit of the soil, a large level of occurrence of sludge. During this procedure, a slight reinforcement of sludge khvorostyanoy lining 10, then JERUSALEM 9 is applied to a bulldozer method of this kind. The work is consistently around the perimeter of the barn. The formation of the next strip of soil 11 is performed after setting of JERUSALEM, prepared strip serves as a place to work and the arrival of a bulldozer. Ground 11 is applied to the peat layer 12 (Fig.5).
When �pererabotka drill cuttings 16 in the body of the barn (Fig.6) the arrangement of the separation strip 14 for the passage of the excavator; the distance between the dividing strips and the embankment should be no more than two lengths of the boom and arm for embracing the entire volume of BSH in the processing. Processing of drill cuttings produced along the dividing strip 14 and embankment to the length of the boom of the excavator. The filling 11 is performed after setting of JERUSALEM. The primer is reclaiming layer 16.
The construction of the structural layers of roads with the use of JERUSALEM carried out by the following main ways: by mixing on a specially prepared gidrolizovannykh sites in the right of way of the highway using multipass milling (DC-74); cooking the mixture in soil-mixing plants (HB-50A, B, etc.).
Also is the strengthening of the slopes of the roadway (Fig.7) using crushed stone 16 and sand 17.
Building material DSCM M40, indicator of frost F25, includes, wt.%:
|BSH, sample # 1||38|
|Portland cement M-400||15|
|�izuchennyj crushed peat||2|
Implementation of the composition of the resulting material with a compressive strength of 0.4 MPa, suitable for construction of load-bearing bases of pavement, for example, on commercial road.
Building material DSCM M20 mark, indicator of frost F15, includes, wt.%:
|BSH, sample # 1||43|
|Portland cement M-400||10|
|Dried pulverized peat||2|
Implementation of the composition of the resulting material with a compressive strength of 0.2 MPa, suitable for the construction of additional layers (anti-freeze, etc.) grounds of pavement, for example, a field roads; as well as for the strong embankments.
Building material DSCM brand M10, indicator of frost F5, includes, wt.%:p>
|BSH, sample # 1||58|
|Portland cement M-400||6|
|Dried pulverized peat||2|
Implementation of the composition of the resulting material with a compressive strength of 0.05 MPa, suitable for the construction of earthworks, backfilling and reclamation of sludge pits.
On site processing of imported materials, is placed in a container of drilling mud, in which you add components in the following ratio, wt%:
|BSH, sample # 1||38|
|Portland cement M-400||15|
|Dried pulverized peat||2|
The mixture was stirred excavator "Hitachi" until a homogeneous mixture, and then produce notch and stacking.
1. Method for processing drill cuttings on-site cluster pad, comprising placing at the site of mixture components and capacity for processing, the premises in the capacity of drill cuttings, adding to the slurry of the components and stirring the mixture by an excavator with obtaining road construction composite material, and the capacity for processing is installed in the ground so that its upper edge rises above the ground to a height of no more than 0.5 m, use a mineral filler (sand) in the range of 5 to 30 wt.% and drill cuttings moisture 30-60% in the range of from 38 to 58 wt.%
2. A method according to claim 1, characterized in that the road-building material includes drilling mud density from 1.3 to 1.8 kg/DM3, cement as the main binder in an amount of 5-15% by weight of the mixture, thermal utilization of waste sludge (slag) with a density of 1.2 to 1.6 kg/DM3in the amount of 14.5-34% by weight of the mixture, a mineral filler and a sorbent complexing agent, where the sorbent complexing agent used organic fibrous (peat) the sorbent in the amount of 2-4% by weight of the mixture.
3. A method according to claim 1 or 2, characterized in that the pad has dimensions m not�her 20×20 m.
4. A method according to claim 1 or 2, characterized in that the upper edge of the receptacle is placed a bump.
5. A method according to claim 1 or 2, characterized in that the side of the vessel wall outside is reinforced with logs.
6. A method according to claim 1 or 2, characterized in that the components of the mixture are placed close to the excavator at a distance of the length of the transfer arrows.
FIELD: process engineering.
SUBSTANCE: set of inventions relates to drilling. Proposed system comprises the components that follow. Downhole device for decreasing of drill string vibration and injection and superhigh-pressure drill bit for downhole injector. Said downhole device for decreasing of drill string vibration and injection includes high-pressure channel. Said superhigh-pressure drill bit comprises channel to transfer superhigh-pressure mud fluid. Said channel to transfer superhigh-pressure mud fluid comprises superhigh-pressure mud fluid channel, high-pressure hose and high-pressure stiff pipe. Said high-pressure channel communicates with superhigh-pressure mud fluid transfer channel. One end of said high-pressure hose is connected with said superhigh-pressure mud fluid channel while opposite end of said hose is connected with high-pressure stiff pipe. Opposite end of said high-pressure stiff pipe is connected with superhigh-pressure mud fluid nozzle. Method for decreasing of drill string vibration uses the source of power generated by pressure oscillation at drill bit body. Besides, it exploits mud fluid forced into downhole device for decreasing of drill string vibration and injection after shunting by shunting mechanism. Note here that major part of mud fluid is forced through common pressure nozzle. Mud fluid remainder is forced to power converter via intake one-way valve in said downhole device for decreasing of drill string vibration and injection. Power source and power produced thereby are used to release mud fluid minor portion via discharge one-way valve connecting the high-pressure channel. Besides, superhigh-pressure mud fluid nozzle generates superhigh-pressure jet to facilitate rock destruction directly or indirectly. Power converter is composed of seal assembly, injection cylinder and cylinder guide bush.
EFFECT: higher rate of drilling, stability, reliability and safety.
13 cl, 11 dwg
FIELD: oil and gas industry.
SUBSTANCE: method includes drilling of a well borehole by an assembly with the lower power drive and usage of a circulation fluid as a drilling mud. A loss zone is entered and drilling is transferred to the drilling mud, at entry to the loss zone rotary assembly or the upper power drive is switched, a drill string is rotated with a rate of 60-90 rev/min, consumption rate of the drilling mud is set equal to 18-20 l/s at the wellhead pressure of 1-2.5 MPa, the drilling mud is used with a viscosity of 60-90 CP, at the entry to the loss zone cuttings are introduced in a quantity up to 30% of the drilling mud volume and in the progress of the loss zone the passage quantity of cuttings in the drilling mud is reduced up to 8-12% at the loss zone end, the well is washed by the drilling mud without cuttings with a viscosity of 40-60 CP, with the consumption rate of 30-35 l/s and the wellhead pressure of 1-2.5 MPa and drilling is continued till the design reference mark.
EFFECT: improved reliability of the loss zone isolation, sticking of drilling tools is excluded.
FIELD: oil and gas industry.
SUBSTANCE: while implementing the method a tubing string is run in to a well up to a bottomhole with a tube having a diameter more than the diameter of the tubing string with triangular windows and inner sharp tabs faced upwards under an angle of 25-30° to the vertical, circulation of the borehole fluid with a consumption rate within limits from 3.5 up to 8 l/s through the annular space, tube and tubing string through a holding tank in the volume not less than the well volume and lifting of the tubing string with the tube from the well.
EFFECT: raised efficiency of the well cleaning.
FIELD: oil and gas industry.
SUBSTANCE: method includes drilling of a well, running in of a production string to a horizontal part of the well with a mud-inflatable packer, a stop ring and a stage cementing collar at the end, injection of the cement grout to the annular space, the process withhold for the time of the cement hardening, drilling of the stop ring and collar and the well development. At running in the production string is stopped at a distance from the bottomhole, drilling of the stop ring and collar is made with the usage of a drilling fluid with a density from 1.20 up to 1.25 g/cm3, it is injected with a rate of 18-21 l/s at a pressure of 8-10 MPa at the wellhead. The interval from the production string end till the bottomhole is worked out by a bit, the well is washed by the drilling fluid at a wellhead pressure of 8-10 MPa, a filtering string of a low diameter is run in through the production string and an interval from the bottomhole until the production string is covered with partial covering of the production string end; the filtering string remains in the interval of the productive formation. At running in the production string is stopped at a distance from the bottomhole equal to 50-150 m. Partial covering of the production string end by the filtering string is made per 5-10 m.
EFFECT: increased well productivity.
FIELD: oil and gas industry.
SUBSTANCE: method includes drilling by an assembly with a hydraulic downhole motor, periodical reciprocating of a drilling string in the complicated zone with simultaneous rotating. Drilling is performed by a bit having a diameter of 220.7 mm, a sloughing rock horizon is drilled and the drilling fluid is used with a density of 1.3-1.4 g/cm3, viscosity of 50-90 CP, load to the bit is maintained within limits of 10-15 t, the drilling fluid is injected with a rate of 32-45 l/s, the productive formation is entered to a depth of 1.0-1.5 m with a zenith angle of 75-85 degrees. The sting below assembly is lifted above the sloughing rock horizon, the process is withheld within 1-2 hours, and the assembly is lifted from the well, logging survey is performed and the same assembly is run in. At running in the setting intervals are worked out, the assembly is lifted out of the well, the production string is run in to the bottomhole with a lower section of casing pipes, a docking device and an upper section of drill pipes, the borehole annulus of the lower section is cemented, the upper section is disconnected from the docking unit, the upper section of the drill pipes is lifted and the casing string with a diameter of 177.8 mm is run with the length from the docking device up to the wellhead, the strings are lined up and the borehole annulus is cemented. A packed-hole assembly with a bit of a diameter of 155.5 mm is run in inside the production string, the interval of the sections line-up is worked out and drilling of the productive formation is continued.
EFFECT: excluded sticking of drilling tools when passing the well through complicated zones.
FIELD: oil and gas industry.
SUBSTANCE: method comprises the creation of drilling fluid circulation using the direct layout of washover by pumping through the drilling pipe string with bit, lowered into a well of main drilling fluid and drilling fluid with viscosity, ensuring the increased cutting-carrying capacity. An aerated flush fluid is used as a drilling fluid. During washover with aerated flush fluid the drilling pipes are lowered at the axial speed 20 m/h and at rotational speed 40 rpm. After passing of each 5 m the string lowering is paused and it is raised by 2 meters, the circulation with aerated flush fluid is performed at increased flow rate during 15 minutes, then the lowering is continued. Polymeric bars from acrylic copolymer, soluble paper and soluble cork soluble in aerated flush fluid are used as a drill fluid with the increased cutting-carrying capacity. Bars are thrown off into the pipe string from the wellhead at extension of each pipe of the drill column, starting from the interval of build angle of open borehole above higher 40 degrees at washover of horizontal well and until achievement of the open borehole foot.
EFFECT: washover performance, drilling fluid stability is increased, probability of differential sticking of the string is decreased.
FIELD: oil-and-gas industry.
SUBSTANCE: device comprises cylindrical case with inner cavity, thrust ring and valve. Said cylindrical case can be secured to tubing. Note here that case thrust ring has high-pressure channel for hydraulic communication of cylindrical cavity with hole annuity. Half the circumference of cylindrical case bottom end is composed by saw-like ripper while another half has skew cut. Case thrust ring on ripper side has at least two high-pressure channels, aligned with case axis. Hole is made in the case thrust ring on skew cut side, off centre of case axis. Valve arranged inside the case opposite said bore to allow the down-up flow is composed of valve box with ball fitted in thrust ring bore. Valve box is rigidly secured to thrust ring.
EFFECT: higher reliability and efficiency of flushing.
FIELD: oil and gas industry.
SUBSTANCE: method includes flow string running to the borehole bottom with a wing at the end till it gets into sump contamination, pumping of flushing fluid through the string and its withdrawal through borehole tubular annulus. A ripper is made at the lower end wind. Inside the wing there is a partition with openings of smaller diameter made off-centre over the ripper. Opposite the openings of smaller diameter in the partition there is an opening of a bigger diameter and a return valve with a valve cage is installed over the partition, at that the valve passes fluid bottom upwards. The flow string is run in to the well; rotation of the flow string is made simultaneously with injection of flushing liquid through openings of smaller diameter and liquid lifting through tubular annulus. The return valve is closed. Rotation of the flow string with injection of flushing liquid is continued till the tubing hanger is unloaded in place per 10 kN. Then rotation and injection are stopped. Flushing direction is changed and flushing liquid is injected through tubular annulus under pressure that does not exceed the permitted value. Ripped and eroded sludge is lifted through the flow string till weight of the tubing hanger is recovered. Working operations are repeated.
EFFECT: improved efficiency and reliability of flushing.
FIELD: oil and gas industry.
SUBSTANCE: invention is related to power supply system of borehole surface system assembly. The power supply system of a borehole surface system assembly contains at least one primary engine interconnected to fuel source supplying the primary engine and containing at least one heat source, at least one pump driven by the primary engine interconnected to at least one borehole and at least one fluid used in the borehole and at least one auxiliary system interconnected to the heat source from at least one primary engine. At that the auxiliary system contains a heat exchanger designed to transfer heat from the heat source to the fluid in order to separate one part of the fluid from the other part in at least one borehole.
EFFECT: improving efficiency, flexibility and productivity of the power supply system of a borehole surface system assembly.
20 cl, 5 dwg
FIELD: oil-and-gas industry.
SUBSTANCE: invention relates to drilling. Method of drilling the inclined and horizontal wells in highly porous rocks comprises generation of pressure difference in well-formation system by changing the flushing fluid density. To increase drilling rate by differential use of pressure difference range, additional pressure difference is created by increasing flushing fluid density.
EFFECT: higher rate of drilling.
SUBSTANCE: method to prepare concrete mix consists in the fact that previously 50% of the rated amount of cement is mixed with tempering water, containing superplasticiser of the condensation product on the basis of sodium salt of naphthalenesulphonic acid and formaldehyde - RELAMIX T2 and hardening accelerator - sodium sulphate, exposed to mechanical and chemical activation in a rotor-pulsation device for 2 minutes with subsequent mixing of the remaining part of cement and fillers.
EFFECT: increased strength, mobility of concrete mix, frost resistance and water impermeability.
2 cl, 1 tbl
SUBSTANCE: method of obtaining of gypsum cement-puzzolan mix includes hydroactivation of portland cement with surfactants for 1 min. with the subsequent adding of gypsum and puzzolan component and repeated hydroactivation within 2 min., in the rotor and pulsation device with a shaft speed of rotation no less than 5000 rpm, the surfactant is a mix of polymeric polycarboxylated ether "Glenium® 115", the setting and cuing time regulator "BEST-TB" and the organic silicon compound "N-octyl sulfosuccinate" in the ratio 1:0.3:0.07, the puzzolan component is a metakaolin with the hydraulic activity no less than 1000 mg/g, at the following ratio of components, by weight %: semi-water gypsum 55.8-56.5, portland cement 14.3-15.4, the named surface-active substance 1.1-1.9, metakaolin 2.5-3.3, water - the rest.
EFFECT: increase of frost resistance, increase of time of mix curing, getting self-sealing ability, increase of flexural and compression strength, increase of water resistance and decrease of water absorption.
SUBSTANCE: method to produce a gypsum cement pozzolan binder includes hydraulic activation of portland cement with surfactants for 1 minute with subsequent addition of gypsum and pozzolan component and repeated hydraulic activation for 2 minutes in a rotor-pulsation device with speed of shaft rotation of at least 5000 rpm, surfactants are a mixture of carboxylate polyester "Odolit-K", a controller of setting and hardening times "BEST-TB" and water emulsion of octyltriethoxysilane "Penta®-818" at the ratio of 1:0.23:0.07, the pozzolan component is metakaolin with hydraulic activity of at least 1000 mg/g at the following ratio of components, wt %: calcined gypsum 57-57.7, portland cement 14.9-15.3, specified surfactant 1.3-1.8, metakaolin 2.7-3.3, water - balance.
EFFECT: increased frost resistance, longer times of mixture setting, giving it self-compacting property, increased strength, higher water resistance and reduced water absorption.
SUBSTANCE: method to prepare concrete mix includes double-stage mixing of a binder, fillers, a superplasticiser and tempering water, at the first stage they first mix the binder, fine filler, 70-80% of coarse filler and 75-85% of tempering water to produce a homogeneous mix, then at the second stage to the previously mixed mixtyre they add the remaining part of the coarse filler, superplasticiser with remaining part of the tempering water, and finally all components are mixed to produce a homogeneous concrete mix of required workability. The superplasticiser is additive of Cemaktiv SU-1.
EFFECT: reduced consumption of superplasticiser and provision of the possibility to reduce duration of heat and moisture treatment of concrete.
2 cl, 1 tbl
SUBSTANCE: in the method to prepare a haydite concrete mix, including preparation and mixing of mixture components, mixing of the haydite concrete mix is carried out in a turbulent concrete mixer with rotor rotation frequency of at least 8 sec-1 and not more than 30 sec-1, at first 30% of required tempering water is supplied into the turbulent concrete mixer, and gradually haydite gravel is loaded with the running turbulent mixer, and mixed for 120 sec., then the required balance of water is supplied to the continuously running turbulent concrete mixer with addition of technical modified lignosulphonates and a gas forming additive PAK-3, then fly ash and cement are loaded, and the mix is mixed for 2-3 min. to produce homogeneous mix with required cone slump, at the following ratio of components, wt %: portland cement 20.00, haydite 41.50, superplasticiser LSTM 0.0312, fly ash of TPP 17.50, PAK-3 0.025, water - balance.
EFFECT: reduced process operations in production of haydite mix, increased frost resistance, heat insulation properties and reduced average density of haydite without strength reduction.
SUBSTANCE: method to manufacture construction products from foam concrete includes preparation of a foam concrete mix from portland cement, fractionated quartz sand, a foaming agent and water in a turbulent mixer, loading of the produced mix into moulds from dielectric material, on the side surfaces of which there are metal electrodes, exposure of the foam concrete mix to the AC electric field of specified frequency and intensity. Processing of the freshly moulded products with electric field is carried out at the field intensity of 1.5-4.5 V/cm for 0.5-5 min. Efficiency of foam concrete mix exposure to the AC electric field depends on grain-size composition of quartz sand and is maximum when sand fractions of 0.16-0.315 mm are used.
EFFECT: improvement of strength characteristics of foam concrete.
3 cl, 6 tbl
SUBSTANCE: method for obtaining a heat-insulating material involves mixing of filler and a binding agent with further shaping and hardening. Industrial wood chips 5±2 mm thick are used as filler, and rigid polyurethane foam consisting of polyol and isocyanate is used as the binding agent. First, components of the binding agent are mixed; then, the binding agent is mixed with the filler by layer-by-layer laying of a binding agent layer, a filler layer and a binding agent layer into a mould at the following component ratio, wt %: polyol 24-22, isocyanate 36-33, industrial chips 40-45. After supply of the components is completed, the mould is fixed with latches and exposed during 15-20 minutes.
EFFECT: reduction of density and thermal conductivity of material.
1 tbl, 1 dwg
FIELD: process engineering.
SUBSTANCE: invention relates to production of foam materials on the basis of asbestos, basalt, carbon, polyether or polyamide or any other inorganic and organic fibres to be used in aircraft and ship building, machine building, etc. This method comprises the steps that follow. Production of foam bilk from initial mix of fibres and feed of said foam bulk to conveyor belt. Foam bulk is dried in drying chambers at stepwise increase in temperature in successive zones. Foam bulk is annealed in the kiln to foam material and cut reset-size boards. Note here that drying and annealing comprises simultaneous effects of IR radiation and convective heat. Note here that drying stepwise temperature increase occurs at 60°C-170°C. Annealing is performed at 190-280°C. Foam bulk is fed through drying chambers and annealing kiln at the rate of 6-12 m/h. Invention proposes also the conveyor line to this end.
EFFECT: accelerated drying, higher quality of foam material, continuous production.
8 cl, 3 dwg
SUBSTANCE: invention relates to preparation of construction mixtures, primarily fine-grained concrete mixtures and mortars which harden in natural conditions or under steam curing. Disclosed is a two-step method of preparing a construction mixture using mineral filler, a plasticising additive, sand and binder. The first step comprises mixing the binder - portland cement M500 D20, mineral filler - silicon carbonate gaize, 55-65% sand and 60-70% hardening water to obtain a homogeneous mixture, and the second step comprises adding to the obtained mixture the remaining sand, plasticising additive - superplasticiser SP-1 and the remaining water, and finally mixing to obtain a homogeneous mixture of given workability.
EFFECT: reducing consumption of expensive materials without reducing strength of the obtained material.
SUBSTANCE: method comprises electrochemical treatment of mains water in three-chamber electrolysis unit with ion-selective membranes by alternating asymmetric current. Meanwhile the electrolysis unit anode is made from shungite. During the electrochemical treatment of water in the anode and in the anode chamber the ultrasonic oscillations are exited, the frequency of which exceeds the cavitation threshold frequency within a range from 20 kHz up to 100 kHz, and the intensity of the named ultrasonics is in the field of stable cavitation from 1.5 W/cm2 up to 2,5 W/cm2. Water treatment is stopped at achieving of density of particles of hydrated fullerene 10-3-10-4%.
EFFECT: improvement of frost resistance of concrete mix, increase of cement hydratation level and strength of cement stone in early periods of curing.
SUBSTANCE: invention relates to construction and can be used for construction of an earth bed and a facility of reinforced road bases on roads of categories I-V in road climatic zones II-V, as well as pavements on roads of categories IV-V as material for construction of earth bed fills and reinforcement of soil bases of construction and other sites. Road-building material containing drilling sludge with density of 1.3 to 1.8 kg/dm3 and with humidity of 30%, cement as the main binding material in the amount of 5-15% of the weight of the mixture, wastes of thermal utilisation of oil sludges (ash slag) with density of 1.2 to 1.6 kg/dm3 in the amount of 30-40% of the mixture weight, mineral filler and a sorbent - complexing agent, where organic fibrous (peat) sorbent is used as the sorbent - complexing agent in the amount of 2-4% of the mixture weight; Portland cement is used as cement; additionally, it contains liquid glass or organohydride-siloxanes, and sand is used as filler, with that, content of sand as a part of material is 5, or 10, or 30 wt %. The invention is developed in subclaims of formula of invention.
EFFECT: reduction of cement consumption; improvement of environmental situation due to utilisation of wastes of drilling and an ash and slag mixture.
4 cl, 4 ex, 7 dwg