RU2661958C1 - Method of underground-surface development of high-viscosity oil field in the pass of mine workings and the device of micro-tunnel for implementation the same - Google Patents

Method of underground-surface development of high-viscosity oil field in the pass of mine workings and the device of micro-tunnel for implementation the same Download PDF

Info

Publication number
RU2661958C1
RU2661958C1 RU2017130747A RU2017130747A RU2661958C1 RU 2661958 C1 RU2661958 C1 RU 2661958C1 RU 2017130747 A RU2017130747 A RU 2017130747A RU 2017130747 A RU2017130747 A RU 2017130747A RU 2661958 C1 RU2661958 C1 RU 2661958C1
Authority
RU
Russia
Prior art keywords
wells
steam
underground
oil
microtunnel
Prior art date
Application number
RU2017130747A
Other languages
Russian (ru)
Inventor
Андрей Владиславович Ковалев
Юрий Владиславович Круглов
Original Assignee
Андрей Владиславович Ковалев
Юрий Владиславович Круглов
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Андрей Владиславович Ковалев, Юрий Владиславович Круглов filed Critical Андрей Владиславович Ковалев
Priority to RU2017130747A priority Critical patent/RU2661958C1/en
Application granted granted Critical
Publication of RU2661958C1 publication Critical patent/RU2661958C1/en

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/24Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C41/00Methods of underground or surface mining; Layouts therefor
    • E21C41/16Methods of underground mining; Layouts therefor
    • E21C41/24Methods of underground mining; Layouts therefor for oil-bearing deposits

Abstract

FIELD: oil and gas industry.
SUBSTANCE: group of inventions refers to the oil industry and can be used when developing a high-viscosity oil field. Method includes penetrating underground mining by micro-tunneling with input inclined, horizontal, output sloping sections followed by drilling from a horizontal section of underground steam distribution and production wells and the installation of sealed bridges in the inclined and outgoing inclined sections of the micro-tunnel, with the transfer of its operation to the mode of a horizontal large-diameter borehole. Oil is pumped by a submersible centrifugal pump from a micro-tunnel and controls the supply of steam to the ground and underground wells by a single control system with the injection of steam or its mixture with surfactants through a steam line into the steam distribution subterranean wells for the further warm up the lower part of the massif and equalize the heat input to the array along the steam distribution wellbore. Steam with high temperature and pressure and a system for gas removal of oil gases is used. Reinforced concrete pipes of the micro-tunnel are equipped with manholes with removable plugs, which are dismantled from the interior of the micro-tunnel to drill underground wells through open hatches and installations to the freed flanges of wellhead equipment of underground wells. Reinforced concrete pipes are equipped with unified fasteners to install equipment and prevent the position of pipes in the circumferential direction.
EFFECT: it is possible to realize the unmanned operation of the deposit, raise the temperature and pressure of the steam supplied to the surface and underground steam distribution wells, and to equalize the distribution of heat along the underground wells and in the massif, that is favorably affects the increase in oil production.
6 cl, 3 dwg

Description

The present invention relates to the oil industry and may find application in the development of high-viscosity oil fields.

A known method of producing highly viscous oil, including drilling vertical injection and production wells and horizontal production wells with the latter located along the rows of vertical production wells, characterized in that part of the vertical production wells are drilled in the immediate vicinity of horizontal production wells, the coolant is pumped periodically into said vertical wells, and the selection of oil is carried out from other producing wells (RF patent No. 2046934, CL EVB 43/24, publ. 10/27/1995).

The known method has a low oil recovery and development rate, the application of the method is associated with drilling a large number of wells, including expensive horizontal wells.

A known method of secondary development of a highly viscous oil field, including drilling wells, the faces of which are located in the area of underground wells previously drilled from the underground gallery during the primary development of the field by a mine method, injecting steam into these wells and taking oil, characterized in that the wells into which they are injected steam is drilled from the surface, in addition, a well is drilled from the surface to the center of the block under development, and to the underground gallery, a control well, which is equipped with a temperature sensor to control the temperature aturas in the gallery, then steam is injected into the wells from the surface, which is conducted until a sharp increase in the temperature in the gallery, after which the steam is stopped and oil is withdrawn from these wells until the oil production rate reaches a minimum profitable level, in the future, steam injection and oil recovery cycles are repeated, and when the temperature in the underground gallery rises to plus 90 ° C, water is pumped through the control well, while simultaneously taking oil through the remaining wells from the surface to the maximum allowable water cut (RF patent No. 2143060, cl. ЕВВ 43/24, publ. 12/20/1999.)

The known method is complex and leads to an increase in water cut of the produced oil, and also requires the drilling of additional wells. The method is applicable in the presence of underground galleries made during the initial development of the deposit by the mine method.

A known method of mine development of a highly viscous oil field, including tunneling, drilling of surface injection wells, underground production and steam distribution wells, equipment with sensors for monitoring the temperature of underground wells, steam injection into surface injection wells, stopping steam injection at elevated temperatures, and oil extraction from underground wells, characterized in that the equipment with sensors for temperature control is carried out at the mouths of underground wells, as sensors use optical sensors that record the temperature of the produced fluid, information from the sensors is transmitted via an optical cable to a computer in which the received information is processed, control commands are transmitted from the computer to control devices of surface injection wells that supply or interrupt steam supply to the corresponding injection wells to ensure uniform heating of the oil reservoir and the intensification of oil production (RF patent No. 2267604, cl. ЕВВ 43/24, publ. January 10, 2006). This decision was taken as a prototype for the proposed method and device microtunnel for its implementation.

The disadvantages of the known solutions include the need for a large number of long mine workings, including vertical shafts, the high cost of their construction and maintenance, the inability to increase the temperature and pressure of the supplied steam due to the possibility of oil distillation and breakthrough of oil gases into the mine workings, the need for ventilation and thermal insulation of mine workings to maintain a safe temperature for workers.

The objective of the invention is to eliminate the disadvantages of the above method, as well as improving the technological and economic efficiency of thermal mine development of high-viscosity oil deposits through an underground-surface system for the development and modernization of the microtunnel device for its implementation.

The problem is solved using the characteristics specified in the 1st claim, common with prototypes, such as a method of developing high-viscosity oil fields, including mining, drilling surface injection and underground production and steam distribution wells, injecting steam into surface injection wells and cessation of steam injection when the temperature of the oily liquid rises above the set limit, the use of optical sensors recording the production temperature fluid, the transmission of information from sensors via an optical cable to a computer that controls the injection of steam into surface injection wells, and distinctive essential features, such as a mine working, consisting of an input inclined section starting from the day surface, a horizontal section and an output inclined surface section, lead by microtunneling, and in the input and output inclined sections of the microtunnel construct sealed jumpers that isolate horiz ntal section of the microtunnel, and underground production and steam distribution wells are drilled in the horizontal section of the microtunnel with the formation of a branched horizontal well of large diameter, in which oil-containing liquid is accumulated from underground production wells, and steam or its mixture with surfactants is pumped from the surface into the steam underground wells, additionally warming the lower part of the massif and leveling the heat input to the massif along the steam aspredelitelnoy subterranean well.

According to paragraph 2 of the claims, the control of the injection and termination of the injection of steam into surface injection wells and underground steam distribution wells is carried out by a single control system.

The problem is solved using the signs specified in paragraph 3 of the claims, such as a microtunnel device for implementing the method according to p. 1, characterized in that it is equipped with a single control system, made of reinforced concrete pipes equipped with hatches with removable plugs, dismounted from the inside microtunnel spaces for drilling underground wells through open hatches and installing on the freed flanges wellhead equipment of underground steam distribution and production wells, and in the input airtight jumpers are installed in the output and inclined sections of the microtunnel, isolating the horizontal portion of the microtunnel and unified fastening nodes to accommodate the drilling rig, suspension of the temporary monorail and guides to prevent changes in the position of the pipes in the circumferential direction.

According to paragraph 4 of the claims, temperature-sensing optical sensors of the control system are located uniformly along the length of the horizontal section of the microtunnel.

According to paragraph 5 of the claims, temporary flexible air supply ducts are installed in the input inclined section and the output inclined section of the microtunnel, which are connected to the exhaust and discharge mobile fan units.

According to paragraph 6 of the claims, in the outlet inclined section of the microtunnel an oily liquid pumping pipeline is installed, equipped with a submersible centrifugal pump.

The combination of essential features in both the method and the device allows to obtain the following technical result: to realize unattended operation of the field, increase the temperature and pressure of the steam supplied to surface and underground steam distribution wells, and equalize the heat distribution along the underground wells and in the array, which favorably affects on increasing oil production.

The invention is illustrated by drawings, which depict:

in FIG. 1 is a diagram of a microtunnel and placement of temporary equipment installed when equipping it to implement the proposed method;

in FIG. 2 - cross section of a microtunnel along AA, equipped for the extraction of oily liquid;

in FIG. 3 - design of reinforced concrete microtunnel pipes to implement the proposed method.

The proposed method is carried out in the following sequence.

Microtunnel 1 is drilled in the selected section. Microtunnel 1 is a mine drilled through the microtunneling method, which involves forcing the column 2 of reinforced concrete pipes 3 behind a mechanized tunnel shield, while the microtunnel 1 penetration path includes an inclined entrance section 4 starting from the surface, horizontal section 5, outlet inclined section extending to the surface 6. Reinforced concrete pipes 3 are assembled into the column 2 so that in inclined sections 4, 6 and set the pipe 3 without hatches 7 and the horizontal section 5 installed concrete pipes 3 with hatches plugs 7 and 8, the number and location of the hatches 7 with plugs 8 along the pipe 3, and their circumferential location specified project. To prevent changes in the circumferential location of the pipe equipped with unified mounting nodes 9.

After driving the microtunnel 1 in the inlet inclined section 4 and the outlet inclined section 6, temporary flexible air ducts 10 for supplying air with a length of not more than 200 meters are mounted, which are connected to the exhaust 11 and discharge 12 mobile fan units, respectively. Then, in the microtunnel 1, starting from the input inclined section 4, a temporary monorail 13 is mounted for the entire length of the microtunnel 1, the compressed air supply pipe 14 for powering the drilling rigs 15, the fire line 16, the temporary lighting system cables 17. Then, it is delivered to the horizontal section 5 drilling machine 15 installed on the unified fastening nodes 9 provided in reinforced concrete pipes 3, plugs 8 are removed and underground steam distribution 18 and production wells 19 are drilled through the windows formed us in length from 300 to 1500 meters. Wellhead equipment 21 of underground steam distribution wells 18, including a shut-off unit 22 and a steam supply pipe 23, and wellhead equipment 24 of underground production wells 19, including only a shut-off unit 22., is installed on the freed flanges 20 of hatches 7; after drilling of underground wells 18 and 19, the drilling rig 15 is dismantled and transported to the surface.

In the microtunnel 1, a steam pipeline 25 is laid, which is connected to the steam supply pipes 23 at the wellhead equipment 21 of the underground steam distribution wells 18. An oil-containing liquid pumping pipeline 26 is laid in the outlet inclined section 6, equipped with a submersible centrifugal pump 27.

After completing the laying of the pipeline 26 in the output inclined section 6 at a distance of not more than 10 meters from the end of the duct 10, a sealed bridge 28 is erected, equipped with a hatch 29 to ensure air exhaust and personnel access. On the horizontal section 5 of the microtunnel 1 and in the output inclined section 6 from the interface point with the horizontal section 5 to the jumper 28, the monorail 13, the compressed air supply pipe 14, the cables of the temporary lighting system 17 are dismantled. Then, in the input inclined section 4 at a distance of not more than 10 meters from the end of the duct 10 is erected a sealed jumper 30, equipped with a hatch 31 to ensure air supply and personnel access. Simultaneously with these works, liquid level sensors 32 are installed in the input inclined section 4 behind the sealed jumper 30 on the side of the horizontal section 5.

Along the horizontal section 5 of the microtunnel 1, optical temperature sensors 33 are installed and a fiber optic cable for the information transfer channel 34 is laid. Information from the sensors 32, 33 is transmitted via the fiber optic cable of the information transfer channel 34 to the computer 35 of the surface control center.

Surface injection wells 36 are drilled from the surface according to the design defined by the grid and equipped with control devices 37 for regulating steam injection and units 38 for accounting flow and steam parameters, similar devices are installed on the ground part of steam pipeline 25. Control of steam supply to surface injection wells 36 and into steam pipeline 25 carried out by computer 35 of the surface control tower.

At the end of the preparatory work, underground mining 19 and steam distribution wells 18 are put into operation, and shut-off units 22 are opened at the mouths of underground wells. After the personnel leaves the horizontal section 5, the hatches 29, 31 in the sealed jumpers 28, 30 are closed. For the duration of these operations, the exhaust mobile fan unit 11 is switched to the discharge mode. Personnel's access to the inclined inlet section 4 and the inclined outlet section 6 is blocked, the exhaust 11 and discharge 12 fan units are turned off. Then begins the injection of superheated water vapor into the underground steam distribution wells 18 and surface injection wells 36.

Next, the microtunnel 1 is operated in a deserted mode as a horizontal branched well.

The incoming steam warms up the massif, under the thermal influence of the steam, the oil goes into a liquid state and, together with the condensate, enters underground production wells 19, accumulating in the isolated section of microtunnel 1. After reaching the upper limit level of the liquid in the isolated part of microtunnel 1 according to the signal of the liquid level sensor 32 and the computer command 35 of the surface control panel turns on the pump 27 and begins the production of oily liquid, when the level of oily liquid falls below is set th value of the submersible centrifugal pump 27 is switched off.

The supply of steam to the surface injection wells 36 is stopped or resumed by a command from the control computer 35, generated by the processing of the information received from the sensors 33, which allows you to adjust and align the heating of the array. Steam is continuously supplied to the underground steam distribution wells 18, while the volumes of injected steam are reduced or increased by command from the control computer 35 depending on the total volume of steam injected into the surface injection wells 36.

At the final stage of operation of a horizontal branched well, surfactants are mixed with the steam supplied to the underground steam distribution wells 18 to reduce steam losses through cracks and parts of the array freed from oil.

Using the above method and microtunnel device for its implementation allows for the unattended operation of a horizontal branched well and to reduce the cost of construction and maintenance of mine workings, to raise the temperature of the steam supplied to surface and underground steam distribution wells, and to equalize the distribution of heat along underground wells, which favorably affects on increasing production.

From the description and practical application of the present inventions, other particular forms of their implementation will be apparent to those skilled in the art. This description and examples are considered as material illustrating inventions, the essence of which and the scope of patent claims are defined in the following claims, a combination of essential features and their equivalents.

Claims (12)

1. The method of developing high-viscosity oil fields, including
- mining workings,
- drilling of surface injection and underground production and steam distribution wells,
- steam injection into surface injection wells and the cessation of steam injection when the temperature of the oil-containing fluid rises above a specified limit,
- the use of optical sensors that record the temperature of the produced fluid,
- transmitting information from sensors via optical cable to a computer that controls the injection of steam into surface injection wells, characterized in that
- mining of a mine, consisting of an input inclined section starting from the day surface, a horizontal section and an output inclined section extending to the surface, is carried out by microtunneling, and sealed bridges are constructed in the input and output inclined sections of the microtunnel, isolating the horizontal section of the microtunnel, and on the horizontal section microtunnels are drilled underground production and steam distribution wells with the formation of a branched horizontal well pain th diameter, wherein the oil-containing liquid accumulated from underground production wells, wherein the vapor or a mixture of surface-active substances through the steam line is pumped from the surface into the steam distribution subterranean wells, further warming the lower part of the array and aligning the heat input to the array along the steam distribution subterranean well.
2. The method according to p. 1, characterized in that the control of the injection and termination of the injection of steam into surface injection wells and underground steam distribution wells is carried out by a single control system.
3. The microtunnel device for implementing the method according to p. 1, characterized in that it is equipped with a single control system, made of reinforced concrete pipes equipped with hatches with removable plugs, dismantled from the inner space of the microtunnel for drilling underground wells through open hatches and installations on vacant flanges wellhead equipment of underground steam distribution and production wells, and sealed bridges are installed in the input and output inclined sections of the microtunnel, isolating the horizon cial portion microtunnels and uniform fastening units for placing the drilling rig, the temporary suspension monorail and guide tube to prevent changes position in the circumferential direction.
4. The device according to p. 3, characterized in that the temperature-sensing optical sensors of the control system are located uniformly along the length of the horizontal section of the microtunnel.
5. The device according to claim 3, characterized in that temporary flexible air ducts are installed in the input inclined section and the output inclined section of the microtunnel, which are connected to exhaust and discharge mobile fan units.
6. The device according to p. 3, characterized in that in the output inclined section of the microtunnel there is an oil-containing liquid pumping pipeline equipped with a submersible centrifugal pump.
RU2017130747A 2017-08-30 2017-08-30 Method of underground-surface development of high-viscosity oil field in the pass of mine workings and the device of micro-tunnel for implementation the same RU2661958C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2017130747A RU2661958C1 (en) 2017-08-30 2017-08-30 Method of underground-surface development of high-viscosity oil field in the pass of mine workings and the device of micro-tunnel for implementation the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2017130747A RU2661958C1 (en) 2017-08-30 2017-08-30 Method of underground-surface development of high-viscosity oil field in the pass of mine workings and the device of micro-tunnel for implementation the same

Publications (1)

Publication Number Publication Date
RU2661958C1 true RU2661958C1 (en) 2018-07-23

Family

ID=62981477

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2017130747A RU2661958C1 (en) 2017-08-30 2017-08-30 Method of underground-surface development of high-viscosity oil field in the pass of mine workings and the device of micro-tunnel for implementation the same

Country Status (1)

Country Link
RU (1) RU2661958C1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4458945A (en) * 1981-10-01 1984-07-10 Ayler Maynard F Oil recovery mining method and apparatus
RU2060377C1 (en) * 1993-03-10 1996-05-20 Юдин Евгений Яковлевич Method for producing oil using underground horizontal wells
RU2267604C1 (en) * 2005-03-09 2006-01-10 Аркадий Анатольевич Боксерман Mine oil field development method
RU2285116C2 (en) * 2004-08-25 2006-10-10 Анис Тагарович Тимашев Method for extracting deposits of bitumen and highly viscous oil and complex system of equipment for realization of said method
RU2330950C1 (en) * 2006-12-11 2008-08-10 Открытое акционерное общество "Татнефть" им. В.Д. Шашина Method of high vicous oil and bitumen deposits development
RU2455476C1 (en) * 2010-12-20 2012-07-10 Рауф Нухович Рахманов Method of heavy oil production

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4458945A (en) * 1981-10-01 1984-07-10 Ayler Maynard F Oil recovery mining method and apparatus
RU2060377C1 (en) * 1993-03-10 1996-05-20 Юдин Евгений Яковлевич Method for producing oil using underground horizontal wells
RU2285116C2 (en) * 2004-08-25 2006-10-10 Анис Тагарович Тимашев Method for extracting deposits of bitumen and highly viscous oil and complex system of equipment for realization of said method
RU2267604C1 (en) * 2005-03-09 2006-01-10 Аркадий Анатольевич Боксерман Mine oil field development method
RU2330950C1 (en) * 2006-12-11 2008-08-10 Открытое акционерное общество "Татнефть" им. В.Д. Шашина Method of high vicous oil and bitumen deposits development
RU2455476C1 (en) * 2010-12-20 2012-07-10 Рауф Нухович Рахманов Method of heavy oil production

Similar Documents

Publication Publication Date Title
US20170247959A1 (en) Apparatus and method for well operations
US5033550A (en) Well production method
CA1058070A (en) Oil production processes and apparatus
US4299295A (en) Process for degasification of subterranean mineral deposits
US7258163B2 (en) Method and system for production of gas and water from a coal seam using well bores with multiple branches during drilling and after drilling completion
US20090139716A1 (en) Method of recovering bitumen from a tunnel or shaft with heating elements and recovery wells
US7066283B2 (en) Reverse circulation directional and horizontal drilling using concentric coil tubing
AU2003241367B2 (en) System and method for flow/pressure boosting in subsea
RU2571460C2 (en) Assembly and method for flow intensification by hydraulic fracturing in several zones using independent units in pipe systems
RU2341654C2 (en) Method and system of fluid medium recirculation in borehole system
US8127865B2 (en) Method of drilling from a shaft for underground recovery of hydrocarbons
US20100224370A1 (en) Method of heating hydrocarbons
US20080122286A1 (en) Recovery of bitumen by hydraulic excavation
BRPI0617695B1 (en) Body of supine concentric ascension tube, concentric ascending tube system and drilling system
CA1099301A (en) Mine enhanced hydrocarbon recovery technique
US4595239A (en) Oil recovery mining apparatus
CN1910339B (en) For utility wellbore and subterranean formation method reaches the ground from
RU2553705C2 (en) Method of multistage treatment for stimulation of multilateral well
US7896079B2 (en) System and method for injection into a well zone
US6758289B2 (en) Method and apparatus for hydrocarbon subterranean recovery
CA2609601C (en) Method for underground recovery of hydrocarbons
BRPI0614312A2 (en) Method associated with hydrocarbon production, well system, well stimulation apparatus, and multiple well stimulation method
US9366126B2 (en) Apparatus and methods for forming and using subterranean salt cavern
CA2614569C (en) Method of increasing reservoir permeability
EA000922B1 (en) Method for using equipment in a well system, well system and method for a phased development