Borehole surface system assembly

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

 

Background of invention

Set forth in this section merely provide background information related to the present invention, and may not constitute prior art. The invention relates generally to ground-based equipment in a borehole, such as equipment for hydraulic fracturing and the like.

A typical system maintenance well include a primary engine driven by this energy source, as a diesel engine or the like, which actuates at least one Executive component, such as a pump communicated with the well bore for insertion into the wellbore fluid. Fluids may include liquids for hydraulic fracturing, proppant(s), acid(s), cement slurries, mixtures for gravel packing, drilling muds, fluids for well completion, compressed gases, and combinations thereof.

It remains desirable to improve ground equipment borehole with respect to its efficiency, flexibility and performance.

The invention

The power supply system ground equipment borehole contains at least one primary engine provided with a fuel source to power the Prime mover and having at least one heat source, at least one pump, leads the profile found in the action of the primary motor and in communication with the at least one wellbore and at least one fluid medium, used in the wellbore, and at least one auxiliary system is in communication with the heat source from at least one of the primary engine. The fuel source may include a source of combustible gaseous fuel. A source of combustible gaseous fuel may contain one of the natural gas fed directly from the wellbore, natural gas, supplied from productive wells, natural gas, supplied from the production facility, and combinations thereof. A source of combustible gaseous fuel may contain one of the compressed natural gas, liquefied natural gas, natural gas from a pipeline or commercial storage, compressed combustible gas, such as hydrogen or propane, liquefied petroleum gases such as butane, and combinations thereof.

The fuel source may contain liquid fuel. The primary engine may include at least one of a piston engine with compression ignition, piston engine with spark ignition, fuel cell and gas turbine engine. At least one pump can be one of the piston positive-displacement pump, centrifugal pump, eccentric screw pump, and combinations thereof. The heat source may include at least one release of exhaust gases, the system ohla the Denia primary engine, auxiliary cooling system, and combinations thereof.

The auxiliary system may contain an auxiliary heat exchanger in communication with the at least one heat source. The auxiliary system may contain one of the steam generator, evaporator working fluid, a heat source for heating at least one of the fluid used in the wellbore, a source of fuel and the fluid produced from the wellbore. The auxiliary system may include a refrigeration unit running on waste heat.

The system may further comprise a noise reduction system. The system may also include an air intake for supplying primary engine air source containing air heat exchanger for cooling or heating air source. Air heat exchanger may be in communication with the auxiliary system. Fluid used in the well bore may contain at least one of the frac fluid containing at least one of the fluid and proppant, acid, cement, mortars for gravel packing, mud, mortar for completion, compressed gas, and combinations thereof. The auxiliary system may contain a heat exchanger which is connected with a source of fuel on the basis of prirodno the gas to extract heat from the fuel source, when it is expanded.

In one embodiment, the method includes using the system to power the drilling equipment, containing at least one primary motor which is connected with a source of fuel to power the Prime mover and having at least one heat source, at least one pump driven by the primary motor and in communication with the at least one wellbore and at least one fluid used in the well bore, and at least one auxiliary system, a chamber connected with a source of heat from at least one of the primary engine, the placement of drilling equipment and systems next to the wellbore and conducting at least one operation of the well in the trunk with equipment of drilling wells.

The maintenance operation of the well may contain one of the operations of hydraulic fracturing, acid treatment operations, cementing operations, operations, well completions, operations for protection from the sand flow into the well, operations using coiled tubing, and combinations thereof. The fuel source may include a source of combustible gaseous fuel. A source of combustible gaseous fuel may contain one of the natural gas fed directly from the trunk of the wells the ins, natural gas supplied from productive wells, natural gas, supplied from the production facility, and combinations thereof. A source of combustible gaseous fuel may contain one of the compressed natural gas, liquefied natural gas, natural gas from a pipeline or commercial storage, compressed gas, liquefied hydrocarbon gases, and combinations thereof. The heat source may include at least one of the release of exhaust gases, the cooling system of the primary engine, auxiliary cooling systems, and combinations thereof.

Brief description of drawings

These and other features and advantages of the present invention will be best understood by reference to the following detailed description when considering in conjunction with the enclosed drawings, which depict the following:

Fig. 1 is a block diagram of one possible implementation of the system ground equipment drilling wells.

Fig. 2 is a block diagram of one possible implementation of the system ground equipment drilling wells.

Fig. 3 is a block diagram of one possible implementation of the system ground equipment drilling wells.

Fig. 4 is a block diagram of one possible implementation of the fuel source to the system ground equipment drilling wells.

Fig. 5 BL is the K-scheme one possible implementation of the fuel source to the system ground equipment drilling wells.

Detailed description

Ground wellbore system 100 shown in the drawings, may be used to power ground equipment borehole and contains the primary motor 102, which is communicated with a source 104 of the fuel and operates or nourishes Executive equipment or components 106, such as at least one pump or similar. At least one pump 106 may communicate with the barrel 108 of the well through suitable piping and/or plumbing lines 110, including, but without limitation, lines, known in the field as a temporary process valves. The pump 106 can also communicate with multiple trunks 108 wells and at least one fluid medium 112 used in at least one barrel 108 wells. The pump 106 may communicate with more than one fluid medium 112. The system 100 may be mounted on rails or trailer (not shown) to move the system 100 to different trunks, such as trunk 108 wells. The primary engine 102 may include a heat source such as the production of 116 exhaust gases or other suitable heat source which is connected with at least one auxiliary system 118, which may also contain a heat exchanger or the like, as is more fully discussed below.

The pump 106 can apply the fluid 112 VDC barrel 108 wells, fluid 114 can also be served from the barrel 108 of the well when the system 100, for example, but without limitation, produced water and/or produced fluid or similar. As should be clear to experts in this field, produced fluid, water or fluid 114 may further be connected to the pump 106.

As should be clear to experts in this area, primary motor 102 may be an internal combustion engine such as a reciprocating engine with compression ignition or diesel piston engine, piston engine with spark ignition, gas turbine engine, such as gas turbine engine based on the aircraft engine and industrial gas turbine engine, the air-jet engine, supersonic combustion, fuel cell or similar.

In figures 4 and 5 show embodiments of the sources 400 and 500 fuel. The source 104 of the fuel can be a source of combustible gas, such as compressed natural gas 502, liquefied natural gas 504 and/or natural gas from the pipeline 506 or commercial storage 508. The source 104 of the fuel may contain flammable gas, such as natural gas or the like supplied directly from the barrel 108 of the borehole, shaft 402 productive wells, such as barrel adjacent production well, with about izvodstvennogo object 404, or from any combination of sources 108, 402, 404, 502, 504, 506, and 508 of natural gas shown in Fig. 4 and 5. The source 104 of the fuel may contain compressed combustible and/or flammable gas, such as hydrogen or propane, or liquefied combustible and/or flammable gaseous hydrocarbon, such as butane, out of the barrel 108 of the borehole, shaft 402 production well or production facility 404. The source 104 of the fuel may contain a source of liquid fuel 510, such as diesel fuel, kerosene or similar. As should be clear to experts in this field, the source 104 of the fuel may contain a combination of the above sources 108, 402, 404, 502, 504, 506, and 508 of natural gas and the above-mentioned sources 510 liquid fuel.

The source 104 of the fuel may be selected so as to reduce and/or alter the overall profile of allocation of the exhaust gas in the system 116 release of exhaust gases, for example, reducing the full selection of solid particles, the total allocation of NOxthe number of carbon monoxide or carbon dioxide contained in the exhaust gas, or the like. When the primary engine 104 is open, exhaust gases are formed, which are routed through the system 116 release. The heat of the exhaust gases in the system 116 issue can later be used in at least one auxiliary system 118, more absurd the emnd below.

As should be clear to experts in the field, the pump 106 may contain a positive-displacement pump such as a plunger pump (for example, as three-or five-cylinder plunger pump, centrifugal pump, eccentric screw pump or any suitable hardware and combinations thereof, to supply the fluid 112 in the barrel 108 wells, for example, pressure or the like.

In the embodiment, best shown in figure 2, the system 200 includes a primary engine 202, i.e. gas turbine engine containing section 204 of the compressor and section 206 of the turbine or expander. Air is introduced into the primary engine 202 via the receiver 208 and may be directed through an air heat exchanger 210. Air heat exchanger 210 may be used to cool the air entering the primary engine 202. From the heat exchanger the air is directed in section 204 of the primary compression engine or gas turbine engine 202. Section 204 of compression can have multiple stages of compression, and the air may be conducted through at least one intermediate refrigerator 212 between or after one or more stages of compression. The compressed air exits from section 204 compressed, mixed with fuel from a fuel source, Sepulveda the igniter (not shown) or the like in the chamber 214 of the combustion and is Crescenzio 206 turbine or expander in the engine 202. Section 206 of the turbine or expander may include several stages of expansion, and exhaust gas can be directed to the final stage or the intermediate stage through the release of exhaust gases to the auxiliary heat exchanger 216 for use in a satellite system, such as an auxiliary system 118. Exit 218, such as the primary shaft of the motor 202 is connected to the input (not shown), such as the shaft of the Executive device or devices, such as a pump 106 or the like, directly or coaxial connection, transmission, gear reducer, coupling a steam turbine with a pump or any suitable connection.

As noted above, the pump 106 or the Executive unit communicated with the barrel 108 of the well and source 112 of a fluid medium, such as a working fluid or composition of the treatment fluids of the zone, including, without limitation, frac fluid, proppant(s), acid(s), cement slurries, mixtures for gravel packing, drilling muds, fluids for well completion and combinations thereof.

Auxiliary system 118 may use an auxiliary heat exchanger 216 as the steam generator 122 to generate steam and operation of the system of the combined cycle, for example, operating a steam turbine with a suitable performance, or such as should be clear to the specialist is in this area. Auxiliary system 118 may use an auxiliary heat exchanger 216 as the evaporator for the working fluid, such as fluid medium 112, fluid 114, the source 104 of the fuel or similar.

Auxiliary system 118 may use an auxiliary heat exchanger 216 as a heat source for heating the fluid medium 112, for example, to control chemical reactions and/or characteristics of the fluid or process fluid medium 112. Heated processing fluid medium 112 may be directed into the wellbore using a suitable pump and/or sanitary facilities, such as pump 106 and the temporary technological valve 110.

Auxiliary system 118 may use an auxiliary heat exchanger 216 as a heat source for heating a fluid medium 114, such as fluid is extracted from the barrel 108 of the well or adjacent shaft or adjacent equipment. The extracted fluid 114 can be cleaned or processed in any other way before evaporation or boiling as part of the support system 118, or purified or processed fluid medium 114 may be entered in section 206 of the turbine or expander primary engine 202, or be injected into the air intake 208 primary engine 202 for cooling.

Auxiliary system 118 can use the helper t ployment 216 to heat supercooled gas from the source 504 liquefied natural gas or source 502 compressed natural gas prior to introduction into the primary engine 102, as should be clear to experts in this field. Auxiliary system 118 may use an auxiliary heat exchanger 216 as the heat supplied to a refrigeration unit 120 running on waste heat, which can then be used, for example, for cooling air flowing into the air heat exchanger 210, for example, at the input 208 of the primary engine 202 to operate the mechanical system of the mold or the like for cooling the various components of the system 100.

In the embodiment, system 100'shown in figure 3, the sub-system 118 can optionally use cooling water from the system 302 water cooling primary engine 102 or 202 as a heat source for the auxiliary heat exchanger 216, used with the fluid medium 112, the fluid medium 114, a source 104 of the fuel (such as source 504 liquefied natural gas or source 502 compressed natural gas), with a refrigerating unit 120, a steam generator 122 and an air heat exchanger 210. The system 100' can be used as a heat source for the auxiliary heat exchanger 216 only cooling water from the system 302 water cooling. As should be clear to experts in this field, the system 100 and 100' can use the heat from the auxiliary system cooled the I, system 302 water cooling system 116 release of exhaust gases and combinations thereof.

Air heat exchanger 210 may be used for cooling and/or heating of the incoming air at the inlet 208 and for heating the supercooled natural gas, for example, from the source 502 or source 504 to input into the primary engine 102 or 202. Natural gas from the air heat exchanger 210 may then be held in the auxiliary heat exchanger 216 for heating the gas at the outlet of the air heat exchanger 208 to the introduction of, for example, the combustion chamber 214 to the primary engine 202 or 102.

As should be clear to experts in this field, flowing fluid 114 may contain a fluid for fracturing, proppant(s), acid(s), cement slurries, mixtures for gravel packing, drilling muds, fluids for well completion and combinations thereof. Fluid environment 114 can be used for any number of works on maintenance of the well, including, but without limitation, in the operation of the fracturing operation, the acid treatment, in cementing operations, operations, well completions, operations using coiled tubing operations for protection from the sand flow into the borehole, and combinations thereof.

The pump or the devices 106 may contain a pair of pumps driven by one of the primary what whitelam 102 or 202, such as disclosed in belonging to the same holder of the application are simultaneously pending, No. 12/203,604, filed September 3, 2008.

The primary engine 102 or 202 may optionally contain system 124 noise. System 124 filter can be connected to or communicate properly with the exhaust system 116 primary engine 102 or 202, and may include a bypass channel for the exhaust gas below the auxiliary heat exchanger 216 to direct the exhaust gas up. System 124 squelch may contain "noise-canceling" or the opposing wave directed to a noise source such as the exhaust gas of the primary engine 102 or 202 to reduce the effect of noise from the primary engine 102 or 202 or other sources of noise from ground equipment and thus to reduce the full noise of the entire system 100. The auxiliary heat exchanger 216 may act as a silencer or suppressor, directing the exhaust gas through the vents and such.

Described here, private options for implementation are only illustrative, as the invention may be modified and implemented in practice different but equivalent ways, obvious to specialists in this area, benefiting from the disclosed ideas here. In addition, nick is their limitation is imposed on shown here the details of construction or design except as described below in the claims. Thus, it is obvious that disclosed above private options for implementation may be altered or modified and all such modifications are considered covered entity and the scope of the invention. In particular, all disclosed here, the ranges of values (in the form of "from about a to about b," or equivalently, "from approximately a to b," or equivalently, "approximately a-b") should be understood as referring to exemplary set (set of all subsets) of the corresponding range of values. Accordingly, sought protection here is, as set forth below in the formula.

The preceding description has been presented in relation to the currently favored variants of realization of the invention. Specialists in this field and in the technology to which the present invention should be understood that changes in the described structures and methods of action can be carried out, without departing substantially from the principles and not going beyond the scope of this invention. Accordingly, the foregoing description should not be construed as pertaining only to the precise structures described and shown in the attached drawings, but, on the contrary, they should be interpreted as corresponding to the following formula and as support to the formula, which should have the most is the most complete and objective scope.

1. The power supply system ground equipment borehole containing
at least one primary engine provided with a fuel source to power the Prime mover and having at least one heat source and the primary engine is selected from the group consisting of a piston engine with compression ignition, piston engine with spark ignition of the fuel element;
at least one pump driven by the primary engine and the possibility of introducing at least one fluid medium for use in at least one wellbore and feeding at least one fluid from at least one wellbore; and
at least one auxiliary system is in communication with the heat source from at least one primary motor and comprising a heat exchanger configured to transfer heat from the heat source to the at least one fluid from at least one wellbore to separate the evaporation portion of the at least one fluid from at least one wellbore from another part of the at least one fluid from at least one wellbore.

2. The system according to claim 1, in which the fuel source is a source of combustible gaseous fuel.

4. The system according to claim 2, in which the source of combustible gaseous fuel selected from the group consisting of compressed natural gas, liquefied natural gas, natural gas from a pipeline or commercial storage, compressed hydrogen, compressed propane, liquefied butane, and combinations thereof.

5. The system according to claim 1, in which the source of fuel is a liquid fuel.

6. The system according to claim 1, in which at least one pump selected from the group consisting of a plunger pump is a positive-displacement, centrifugal pump, screw pump, and combinations thereof.

7. The system according to claim 1, in which the heat source is selected from the group consisting of the release of exhaust gases, the cooling system of the primary engine, auxiliary cooling systems, and combinations thereof.

8. The system according to claim 1, in which the auxiliary system includes an auxiliary heat exchanger which is connected with at least one heat source.

9. The system of claim 8, in which the auxiliary system is selected from the group consisting of a steam generator, evaporator d is I the working fluid, a heat source for heating at least one of the fluid used in the wellbore, a source of fuel and the fluid produced from the wellbore.

10. The system according to claim 1, in which the auxiliary system includes a refrigeration unit running on waste heat.

11. The system according to claim 1, additionally containing a noise reduction system.

12. The system according to claim 1, additionally containing the air intake to supply the primary source engine air containing air heat exchanger for cooling or heating air source.

13. System according to clause 12, in which the air heat exchanger communicated in fluid with the auxiliary system.

14. The system according to claim 1, in which the fluid used in the wellbore selected from the group consisting of fluid and proppant, acid, cement, mortars for gravel packing, mud, gravel mixture for stuffing, mud, mortar for completion, compressed gas, and combinations thereof.

15. Method of feeding ground equipment borehole, according to which
produce a system for power equipment borehole containing at least one primary engine provided with a fuel source to power the Prime mover and having at least odinistic heat at least one pump configured to supply at least one fluid in at least one wellbore and feeding at least one fluid from at least one wellbore, and at least one auxiliary system is in communication with the heat source from at least one primary motor;
installing drilling equipment and system for power equipment near wellbore; and
perform at least one maintenance operation in the wellbore using the drilling equipment,
at least one auxiliary system comprises a heat exchanger through which transfer heat from the heat source to the at least one fluid from at least one wellbore to separate the evaporation portion of the at least one fluid from at least one wellbore from another part of the at least one fluid from at least one wellbore.

16. The method according to item 15, according to which the maintenance operation of wells selected from the group consisting of fracturing jobs, operations, acid treatment, cementing operations, well completions, protection operations from receipt of sand in the hole surgery using flexible pipes and their Combi the Nations.

17. The method according to item 15, according to which the fuel source is a source of combustible gaseous fuel.

18. The method according to 17, according to which a source of combustible gaseous fuel selected from the group consisting of natural gas fed directly from the wellbore, natural gas, supplied from productive wells, natural gas, supplied from the production facility, and their combinations.

19. The method according to 17, according to which a source of combustible gaseous fuel selected from the group consisting of compressed natural gas, liquefied natural gas, natural gas from a pipeline or commercial storage, compressed gas, liquefied hydrocarbon gases, and combinations thereof.

20. The method according to item 15, according to which the heat source is chosen from the group consisting of the release of exhaust gases, the cooling system of the primary engine, auxiliary cooling systems and their combinations.



 

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5 cl, 1 dwg

FIELD: oil and gas industry.

SUBSTANCE: device includes a sucker-rod pump unit and liner of pipes below the productive interval. The liner part covering the productive interval is assembled of resilient elements with flexural stiffness less than flexural stiffness of the pipes placed above it.

EFFECT: device is distinguished by a simple design and operational reliability; it allows essential increase in efficiency of the producing wells by generation and transfer of flexure oscillations to the productive stratum interval.

4 cl, 2 dwg, 2 ex, 1 tbl

FIELD: oil and gas industry.

SUBSTANCE: invention is related to the field of oil and gas industry, mainly to production of viscous and superviscous oil, and it may be used for production stimulation of oil with viscous components and deposits. High-frequency impulse current is generated by a group HF surge-current generators in a group of twin-transmission power lines in a group of wells and consisting of two isolated conductors or one isolated conductor and used as the second metal conductor of pipelines in the group of wells. The impact is made by an electromagnetic high-frequency pulsed field generated by high-frequency impulse current of conductors in the groups of twin-transmission power lines to the metal surface of pipelines in the group of wells. Thermal and acoustic impact is made on intratubal liquid in the well group and through it on the oil deposit by heating and mechanical vibration of the pipeline metal which occurs at passage of high-frequency impulse current through the twin-transmission power line. Additional thermal and acoustic impact is made on intratubal liquid in the well group and through it on the oil deposit by heating and pressure fluctuations which occur at the end of the twin-transmission power line in result of high-frequency impulse charge through intratubal liquid. At that the HF surge-current generators are set so that they generate high-frequency current pulses with identical pulse length and repetition.

EFFECT: increase of oil production stimulation.

22 cl, 3 dwg

FIELD: mining.

SUBSTANCE: method involves pumping to a well perforation zone of a working agent, formation of depression differential pressure between the bottom-hole zone and a well cavity by creation of periodic pressure pulses in the bottom-hole zone in the form of a wave moving along the well cavity, which is formed at periodic opening of the well cavity on the mouth and its closing for periodic outflowing of well fluid and rise of pressure in the well cavity using valves. Outflow of fluid from the well cavity is performed through a well fluid drain valve attaching the well mouth and a drain reservoir. Well cavity pressure is increased through a fluid filling-up valve attaching the well mouth to a pressure fluid source. When the fluid drain valve is being opened, the fluid filling-up valve is closed at the same time. When the fluid drain valve is being closed, the fluid filling-up valve is opened at the same time. Opening and closing of valves is performed at intervals providing bringing of well fluid mass to the state of free vertical oscillations. Limits of pressure variation of pumped fluid are adjusted. Number of free vertical oscillations of a well fluid column and pumping rate of working agent is assumed depending on geological conditions. Well cavity fluid filling-up is performed by means of a pump from the drain reservoir. Drain and filling-up valves are combined into a common structure of a flow switch providing the possibility with opening of one valve to close another one and vice versa.

EFFECT: improving efficiency of the method owing to the possibility of bringing mass of well fluid column and working agent to back-and-forth movement state using small amount of additional equipment and simpler treatment.

2 dwg

FIELD: oil and gas industry.

SUBSTANCE: at construction of a horizontal oil well construction drilling of a vertical wellbore is done through rocks, including unstable clay rocks with entry to a productive formation, running-in of the production casing up to the productive formation, cementing of a borehole annulus and drilling of a horizontal offshoot from the production string. Running-in of a shank with length from the bottomhole up to the depth of unstable clay rocks not less than 50 m, cementing space behind the shank, perforation of the horizontal borehole and hydraulic fracturing in the horizontal borehole with placement of a hydraulic fracturing arrangement in the production string and setting of the packer for hydraulic fracturing and tubing string shoe in the production string over the shank is carried out.

EFFECT: increase of well productivity.

1 ex

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.

4 dwg

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