WO2006052157A1

WO2006052157A1 - Method and device for putting into operation a paraffinized oil-producing well

Info

Publication number: WO2006052157A1
Application number: PCT/RU2004/000476
Authority: WO
Inventors: Yurii Sergeevich Samgin
Original assignee: Yurii Sergeevich Samgin
Priority date: 2004-11-11
Filing date: 2005-03-03
Publication date: 2006-05-18
Also published as: RU2004132821A; RU2275493C1

Abstract

The invention relates to the oil industry and can be used for putting into operation paraffined oil wells in different climatic regions. The inventive method differs form the known methods in that it consists in simultaneously controllably heating different layers of a heating cable wound on a drum when said heating cable runs in the well, in overcoming a high well head pressure acting on the cable by a transporter axial force which ensures the alignment of the lowered cable with the pushing well head pressure and in running the hot cable in a paraffin-forming area by gravity. The inventive device for putting into operation a paraffined oil well comprises a heating cable (hereafter a cable) whose one end is connected to a power supply and the other end is closed an insulated inside the cable which is provided with at least one temperature sensor arranged therein. According to said invention, the cable, prior to be lowered, is wound on a controllable winch drum and temperature sensors connected to respective temperature measuring devices are disposed between the cable winding layers. The invention for putting into operation a paraffined oil well is characterised in that it also comprises a one-drive cable transporter which is used for running in and lifting the cable in the wellhead area under a high well head pressure and comprises a detachable body consisting of two parts one of which is embodied in the form of a power-driven part and the other in the form of a cover. Each body part comprises independent rolls which are arranged therein on whose axes gear wheels are rigidly fixed and disposed in such a way that they are cinematically connected to each other and to rolls. Odd number of pairs are mounted on the power driven part of the body, the shaft of one pair is connected to a drive, the cover shafts are disposed just on center between the shafts of the power-driven part of the body, wherein the gear wheels thereof are connected by pairs to each gear wheel of the cover.

Description

Method and device for starting a paraffin oil producing well.

The invention relates to the oil industry and can be used to run paraffin oil wells in various climatic zones.

A known method for dewaxing oil and gas wells (RU, Cl, 2166615), which consists in the fact that before descending into the paraffin formation zone of the heating cable (hereinafter cable) determine the possible depth of paraffin formation, cable length and power depending on the debit of the well, pressure in the well, the melting temperature of the insulating material of the cable and the temperature in the zone of the lower end, lowered into the well of the cable, control the temperature by the operating time of the cable, which is maintained along the entire length of the working parts of the cable are 5-500 ⁰ C higher than the melting point of paraffin, the temperature of the product outlet stream from the well is maintained, depending on the ambient temperature, at least 5O ⁰ C above the maximum temperature of the product outlet stream in the absence of a heating cable.

A disadvantage of the known method for dewaxing a well is that the cable is heated after it is lowered into the well, which does not allow to pre-clean the well before its descent, and overcoming high wellhead pressure when lowering the cable periodically ends with killing the oil well, while the described method does not allow lower the cable into the well at low ambient temperatures, which makes it inoperative.

A known installation for dewaxing oil and gas wells, containing a cable lowered into the zone of possible paraffin formation and a heating control system connected thereto. Before lowering the cable into the well, its free end is first passed under the tension roller and lowered into the stuffing box through the guide roller, then the cable is manually pushed into the well to a depth of 50 meters. After that, the cable begins to fall under its own weight, and then after about 100 meters, the cable is lowered by braking the winch of the logging unit on which the cable is wound. At high pressure at the wellhead (more than 5 MPa or more), at the initial stage of descent of the cable, wellhead pressure appears, pushing the cable out of the well. To eliminate this, it is necessary to suspend the operation of the well during the descent of the cable, which can be done only by killing the well and only after that lower the cable to a predetermined depth. Similar problems arise when lifting the cable from the well. All these shortcomings affect the amount of oil produced.

The present invention aims to solve the following problems. In a whole series of cases, when starting a paraffin oil well, it is necessary to exclude the preliminary cleaning of the well, to overcome the high wellhead pressure without killing the well, and to carry out installation of the installation, even at low ambient temperatures, and thus significantly increase oil production. The problem is solved in that the method of putting into operation a paraffin oil producing well, including determining the depth of possible paraffin formation, the length of the heating cable, its power depending on the flow rate of the product, the melting temperature of the insulating material of the cable, lowering it into the paraffin formation zone of the well, the temperature of which is maintained by the entire length of the working part of the cable is 5-500 ⁰ C higher than the melting point of paraffin, while the temperature of the stream leaving the well, the product is supported at least 5O ⁰ C above the maximum temperature of the product outlet stream in the absence of a cable according to the invention, before the cable is lowered into the well, wound onto a winch drum, it is heated above 45 ⁰ C and lowered into the well, while simultaneously heating the cable in different layers of its winding on the drum, and high wellhead pressure is overcome by the axial force of the conveyor acting on the cable, ensuring the mass of the deflated cable is aligned with the pushing wellhead pressure, and then heated the th cable is lowered into the paraffin formation zone under its own weight.

In addition, additionally control the flow rate of the product stream leaving the well; cable power is selected depending on the flow rate of the well in the range from 10 to 120 kW; before lowering into the well, heating is carried out taking into account the ambient temperature; at an ambient temperature below 3 ⁰ C, before lowering the cable into the well, it is heated above 500 ⁰ C.

The problem is also solved by the fact that the start-up device for a paraffin oil producing well containing a heating cable (hereinafter cable), one end of which is connected to a power source, and the other end is closed inside the cable and insulated, at least at least , one temperature sensor, according to the invention, the cable is pre-wound onto the drum of the controlled winch before launching, while temperature sensors are installed in the layers of the cable winding, which are associated with the corresponding temperature -temperature measuring instruments.

In addition, the cable is connected to the power source through a current collector with sliding contacts; the cable is connected to the power source through an additional power cable; temperature sensors are installed through at least one layer of cable winding onto the drum of the controlled winch; the heating control system includes a controller that ensures the safety of the cable; in the cable, each sensor corresponds to one common core and, in addition, one core to each sensor installed in “n” number of places along the length of the cable, where “n” is the number of sensors; the contacts of the heating cores are closed at the end of the cable while ensuring its density close to 100 kg / dm ² .

The problem is also solved by the fact that the start-up device for a paraffin oil producing well, comprising at least a guide and a tension roller and a heating cable (hereinafter cable) located in the well in a zone of possible paraffin formation and a heating control system connected thereto, according to the invention also contains one-wheel cable conveyor, which provides descent and rise in the wellhead part of the well under conditions of increased wellhead pressure, comprising a detachable housing consisting of two parts, one of which is a drive housing and the second is a cover, with independent rollers placed in each housing part, on the shafts of which gears are rigidly fixed respectively to them, located with the possibility of providing kinematic communication with each other and the rollers, while an odd number of pairs are located in the drive part of the housing, and the shaft discharge pairs is connected with the drive shafts and a cover disposed centered between the drive shaft of the housing, while in the operating position of the housing drive gear pairs are connected with each gear cover.

In addition, the base of the tension roller is rigidly fixed to the anchor pipe at a distance of 1 to 7 m from the center of the fountain fittings, and the cable mount is rigidly mounted on the base of the tension roller; the support roller is mounted on reinforcement having a length of 0.5 to 3 m at an angle to the vertical strut from 8O ⁰ C to 120 ⁰ C, and the cable mount is rigidly mounted on the reinforcement, where the vertical components of the reinforcement are a continuation of one another; the drive is connected to the middle shaft of the drive part of the housing for even distribution of effort from two sides over an even number of rollers and gears; the conveyor housing is equipped with constricting elements that regulate the power of the conveyor; the acting axial force of the conveyor on the cable is over 2 MPa, providing alignment of the weight of the deflated cable with the pushing wellhead pressure.

In this case, after lowering the cable into the well and removing the conveyor, fasteners are installed on the cable above the wellhead gland to ensure that the cable is held in suspension. Blowout devices are rigidly attached to the mounting nodes.

The present invention is illustrated by specific examples of its implementation and the accompanying drawings, in which:

FIG. 1 - depicts a plan of the location of the electrical cable installation at the fountain; FIG. 2 - depicts the descent of a cable into a paraffin well at high wellhead pressure;

FIG. 3 - depicts the heating of the cable when it is lowered into a paraffin hole, at an ambient temperature below 3 ⁰ C;

FIG. 4 - depicts a diagram of a single-drive cable conveyor; FIG. 5 - shows a diagram of the installation of the tension roller at an angle to the wellhead roller block;

FIG. 6 - depicts the installation diagram of the tension roller at the bottom of the fountain.

The proposed method for launching a paraffin oil well is as follows:

Before the heating cable is lowered into the well, the depth of possible paraffin formation is determined by studying the geological documentation, the well operation log, which contains descriptions of the stops when the well is being lowered calibration projectile and shutdown of geophysical equipment due to paraffin during geophysical surveys of the well, identifying the maximum depth of shutdown of shells, as a rule, to the maximum depths of detected stops from the logs, their average values were determined and the depth of the estimated maximum paraffin formation increased by an average of 150 - 200 meters, while the length of the heating cable was selected within +/- 50 meters. The second important factor in developing the characteristics of the dewaxing technology was determining the power depending on the flow rate of the product stream obtained from the well per day and the melting point of paraffin and cable insulation material. In the manufacture of the cable, we studied the documents characterizing the insulating material of the manufactured cable, taking into account the maximum heating temperatures of the cable, their permissible values, rational temperatures of the operating mode of the installation, minimum temperatures at which the melting point of paraffin will be reached, as well as the overall balance of heat received from the cable at its work at optimal power modes of the step-up transformer taking into account the current strength in the range from 60 to 100 amperes, AC voltage from 380 to 600 volts, taking into account the heating of the entire daily oil mass and the incoming oil temperature at the location of the lower end of the cable, the geotherm of heat absorption by the rocks surrounding the well and the temperature of the outlet stream from the well are studied. All these factors give us the opportunity to choose the most rational modes of operation, in which the operating capacity of the plants will determine not only the efficiency of the well, but also the duration of the installation, which can increase the time to the first failure of the cable 2 to 3 times the warranty period. The descent of the heating cable into the well is determined by many factors, of which especially affect its first stage: the ambient temperature and the paraffininess of its mouth part, as well as wellhead pressure. Ambient temperature, at first glance, can in no way affect the operation of the electric cable installation, since the main working element, the heating cable, is located inside the well at a practically unchanged temperature, but the cable has to be lowered in different geographical areas, for example, a dewaxing unit wells are used in both southern, middle and northern latitudes. In the south, the environment adds to the temperature of the heated cable - 7O ⁰ C another 50 - 6O ⁰ C and in total is 120 - 130 ⁰ C, which approaches the melting temperature of the insulating material of the cable. Therefore, when using plants in hot climates, to prevent overheating of the cable, cooling of the cable located on the surface should be organized, which may be accomplished by using, for example, an air conditioner with a flexible hose inside which a cooled cable is placed. In northern conditions, the ambient temperature, in winter, reaches 50-6O ⁰ C below zero. At the same time, the descent and lifting of the cable are not carried out. They are carried out at temperatures above 25 ⁰ C frost, in this case, the only way to lower the cable into the well is to heat it, before lowering, to temperature +50 - + 7O ⁰ C, while during the passage of the cable from the winch drum of the logging unit to the wellhead, it does not have time to cool below 20 ⁰ C and, thus, falls warm into the well, but if the well is paraffin, then may sink into the well if its temperature is higher than the melting point of paraffin. Therefore, the cable is lowered into the well, simultaneously controlling the temperature of heating the cable in different layers of its winding on the drum. Otherwise, without preheating the cable, it already cracks at a temperature of +3 ⁰ C, especially when passing through the tension and guide rollers and becomes unsuitable for use. Thus, before the cable is lowered into the well, at an ambient temperature below 3 ⁰ C, the cable wound on the winch drum is heated at least 50 ⁰ C.

At wellhead pressure, when it is from 1 to 1.5 MPa, the cable can be lowered into the well manually. With a pressure at the wellhead of more than 1.5 MPa, it is possible to manually lower the cable into the well only in wells equipped with electric centrifugal pumps. On other types of wells - fountain or gas lift, the cable can be run, at high pressures, only after the pressure of the well is completely quenched, in this case the pressure at the wellhead will be O atm. and lowering the cable does not present any difficulty, however, re-launching the well is a big problem and can lead to loss of the well.

Thus, high wellhead pressure is overcome by the axial force of the conveyor acting on the cable, which allows the descent cable to overcome this pressure, pushing the cable out of the well, and then the heated cable is lowered into the paraffin formation zone under its own weight. In this case, the flow rate of the product exiting the well is additionally controlled, and the cable power is selected depending on the flow rate of the well in the range from 10 to 120 kW. The power of the cable can be controlled by the temperature of its heating and the voltage supplied to the cable. The latter can be changed by switching the transformer to various voltage modes, for example: 380v, 440v, 500v, 550v, 60OB, etc. And at a constant value of the cable resistance, the current strength and, accordingly, the cable power changes.

Before the cable is lowered into the well, it is heated taking into account the ambient temperature and heated above 50 ⁰ C.

The startup device paraffin oil wells consists of the following nodes and elements.

The device is mounted on the basis of fountain fittings 1, a guide roller block 3 is installed on the upper flange 2, a heating cable 5 is passed through the guide roller 4 and the tension roller 6, the latter is lowered through the wellhead seal 8 into the well, the tension roller is mounted on the support 7, on which the mounting device of the cable 9 is placed, fixing clamps 10 are mounted on the cable mouth 5 on the wellhead 8 and the end of the heating cable 5 from the tensioning roller 6 goes to the junction box 1 1, where it is fastened with two end terminals to the contact am Thus, in the junction box 11, the heating cable 5 and the power cable 12 are electrically connected, the other end of which is connected to the control station 13.

The power supply to the control station 13 is carried out through a transformer 15, from a power line voltage of 380V and a frequency of 50 Hz.

Before the cable 5 is lowered into the well, it is placed on the reel of the controlled winch 16, and at the end of the cable a sliding contact 17 of the heating cable is installed and it is electrically connected to the sliding contact 18 of the power cable 12, through which the cable 5 is electrically powered, this connection allows the cable to be heated simultaneously with the rotation of the drum and, accordingly, its descent into the well. In the absence of sliding contacts 17, 18, the conductors of the heating cable 5 are connected to the cores of the power cable 12, while the cable 5 on the drum of the controlled winch 16 is heated without rotation to a temperature of 50 to 7O ⁰ C, after heating, the cables are disconnected. When winding the cable 5 onto the drum of the controlled winch 16, at least through each row of the winded cable 5, temperature sensors 20 are installed, which are connected by electrical wires 21 between the rows of the winded cable to measuring instruments 22 located on the outer side of the drum of the controlled winch 16. Thus, carry out heating of the cable before launching at temperatures below 3 ° and with a paraffin well in order to pass the intervals of paraffin plugs with a heated cable.

Overcoming wellhead pressure is carried out using a single-wheel conveyor 23 cable (Figure 4). The conveyor 23 consists of 2 parts, including the drive part 24 and the cover 25 of the conveyor, rotary loops 26 and locking elements 27 of the parts of the conveyor 23, interconnected. A drive 28 is mounted on the drive part 24 of the conveyor, which is connected to the drive shaft, on which the gear 31 and the roller 40 are fixed. Drive gears 29-33 and drive rollers 38-42 and shafts 43, on which the drive gears are fixed, are mounted in the same part rollers. In the cover 25 of the conveyor 23 there are driven gears 34-37 and driven rollers 44-47 and intermediate shafts 48 on which gears are fixed in the cover 25 so that they are parallel to the shafts 43 in the drive part and are located exactly in the middle between them, respectively in the middle are driven gears 34-37 and driven rollers 44-47, between the corresponding gears and rollers located in the drive part 24. All conveyor shafts are mounted in bearings.

The mounting options for the tension roller differ from each other in that (see Fig. 2), in the first embodiment, the tension roller 6 is rigidly mounted on the anchor pipe at a distance of one to seven meters from the center of the fountain fittings, and the cable mount 9 is rigidly mounted on the support 7 of the tension roller 6. The second option is the placement of the tension roller 6 on the reinforcement having a length of more than 0.5 m at an angle to the vertical rack of the guide roller 3 from 80 to 120 °, and the mounting unit 9 of the cable 5 is rigidly mounted on the valve 1. B the third version of the tension roller can b also installed within the base of the guide roller block 3 and the foundation of the fountain reinforcement 1, and the mount 9 of the cable 5 is rigidly mounted on the armature 1, where the vertical components of the armature 1 are a continuation of one another. The startup device paraffin oil wells works as follows.

A heating cable 5 (hereinafter cable), one end of which is connected through a junction box 1 1 and a power cable 12, to the heating control station 13 of cable 5. And the other end is closed inside cable 5 and insulated, while at least 5 is installed in cable 5 at least one temperature sensor. To preheat the cable 5, before lowering it into the well, in the case of a low ambient temperature (below 3 ° C) and a large accumulation of paraffin plugs at the wellhead, when the cable 5 is wound on a winch drum 16, temperature sensors 20, which are connected with corresponding temperature measuring devices 22, however, temperature sensors 20 are installed through at least one layer of cable winding 5, and temperature measuring devices 22 are mounted directly on the outside guided winch drum cheeks 16.

The cable 5 is heated during the rotation of the drum of the controlled winch 16, for this the end of the heating cable brought out through the inner cavity of the winch drum 16 is provided with sliding contacts 17 through which it is connected to the sliding contacts 18 of the power cable 12 connected to the power source. When voltage appears, the cable 5 is heated to a temperature above 50 ⁰ C, and the control is carried out by temperature measuring devices 22. In addition, the device in the heating control station 13 contains a controller that ensures the safe operation of the cable by monitoring the change in current, voltage , by changing the insulation resistance of the cable 5. When placing 5 temperature sensors in the cable, the number of which is more than 1, in this case one common core is electrically connected to each sensor and one single conductor to each sensor. The contacts of the heating cores are closed at the end of the cable 5, during which termination a density of 100 kg / dm ³ must be ensured, such a density is necessary that the gas mixture or liquid oil components could not penetrate into the cable 5 at high pressures. A device for launching a paraffin oil producing well, which comprises at least a guide 3 and a tension roller 6, a heating cable 5 located in the well in a zone of possible paraffin formation and a heating control station 13 connected thereto, which contains a single-drive cable conveyor 23 , providing a descent and its rise in the estuarine part of the well under conditions of increased wellhead pressure, comprising a detachable housing consisting of two parts, one of which is the drive 24, and the second covered with a cover 25. The conveyor 23 is installed before lowering the cable into the well, on the upper part wellhead omentum, where it is rigidly attached to it. Cable 5 is placed in the inner cavity of the conveyor, between the rollers 38-42 and 42-45 located in different parts of the conveyor housing and when closed they are pulled together with special bolts, thereby providing adjustment of the conveyor power. Next, the cable is passed through the seals of the wellhead stuffing box 8, to the central valve, which is previously closed, then the stuffing box is clamped and, simultaneously with the opening of the central valve, the conveyor drive 28 is turned on and, thus overcoming the wellhead pressure resistance, the cable 5 is gradually lowered into the well. When reaching the length of the cable 5 lowered into the well, with its weight balancing wellhead pressure, which can be determined by the operation of the actuator 28 without load, the conveyor 23 is stopped, removed from cable 5 and then the cable is lowered under its own weight. After the cable 5 has been lowered to the planned interval, fixing clamps and a blowout cable are installed above the gland, additional cable 9 is fastened near the tension roller 6, which guarantees the reliability of cable installation in an oil well.

Considering the operation of the conveyor 23, it should be noted that in each part of the housing 24 and 25 there are independent rollers 38-42 and 44-47, on the shafts of which gears 29 -33 and 34-37 are rigidly fixed respectively to them, located with the possibility of providing kinematic communication to each other with a friend. From the pressing force of the rollers 38-42, from the drive part 24 of the conveyor 23, to the rollers 47-48, of the cover 25, the power of the conveyor 23, carried out by special locking elements 27, including bolts and other tightening grips, depends. At the same time, an odd number of gears, rollers and shafts are located in the drive part of the housing 24, and the drive 28 is connected to the middle shaft of the drive part of the housing 24 to evenly distribute the force among the even number of rollers and gears. The shafts 48 of the cover 25 are located strictly centered between the shafts 43 of the drive part of the housing 24, while the gears 29-33 of the drive part of the housing 24 are in pairs connected to each gear 34-37 of the cover 25.

The magnitude of the force developed by the conveyor 23 on the cable 5 should be more than 15 MPa, providing equalization of the mass of the deflated cable to the pushing wellhead pressure, taking into account the fact that in rare wells the pressure at the wellhead is sometimes more than 10 MPa. After the cable is lowered into the well and the conveyor is removed from it, fasteners 9 are installed on the cable above the wellhead gland to ensure that the cable is held in suspension, and an anti-blowout device is rigidly attached to the fasteners 9.

Practical implementation.

This invention was applied at the Kharyaginsky oil field. LUKOIL-Komi company.

Technical characteristics of the well before installation:

1. Production method (fountain, ESP pump, airlift) - ESP pump

2. The daily volume of fluid production (m ³ ) - 35 3. The percentage of water (%) - 3

4. The percentage of paraffin (%) - 28

5. Depth of paraffin formation (m) - 1570

6. Temperature at depth ( ⁰ C): 1600m- 30

1000 m - 18 at the exit - 5

7. The pressure at the wellhead (MPa) - 4.0

8. Previously used paraffin control method - scrapers

9. The number of downtime per month (days) - up to 8

10. Y. The internal diameter of HKT (mm) is 60 11. 1 1. The ambient temperature in winter ( ⁰ C) is up to minus 50.

When using the proposed method and device for launching a paraffin oil producing well, the depth of possible paraffin formation was determined based on long-term data for a particular well cluster of a given field, which was determined by an interval from 0 to 1570 meters, based on which, the length of the heating cable was selected, which amounted to 1600 meters. The power of the electrical cable installation (60 kW) was calculated, depending on the debit of the product flow (35 m ³ per day), the temperature of the oil entering the well at a depth of 1600 meters and the 2nd voltage transformer operating mode - 500v. The cable 5 was lowered into the paraffin formation zone of the well and the oil heating temperature was controlled in such a way as to maintain it over the entire length of the cable 20 ^° C higher than the melting point of paraffin, while the temperature of the product stream leaving the well was maintained at least 15 ° C higher than the temperature of the product outlet stream in the absence of cable, which was 8 ° C, while the length of the pipeline was 250 meters and previously cooling was 6 ⁰ C, i.e. the temperature of the product stream suitable for the group pipeline was 2 ° C. During the operation of the electric cable installation, the temperature of the product outlet stream from the well was 23 ⁰ C and the flow approached the group pipeline at a temperature of 17 ⁰ C. Before the cable 5 was lowered into the well, at an ambient temperature of 25 ⁰ C below zero, wound on the winch drum 16, cable 5 was heated to a temperature of 5070 ^° C; it was lowered into the well, simultaneously controlling the temperature of heating of cable 5 in different layers of its winding on the drum 16. In the absence of sliding contacts 17, 18, connecting the heating cable 5 is supplied to the power source through the power cable 12. Since there was a wellhead pressure of 4 MPa at the wellhead, a cable conveyor 23 was installed above the wellhead 8, its operation was carried out one drive 28, located on the middle shaft, and a mechanical drill with a power of 1.5 kW served as the drive. Cable 5 was lowered by conveyor 23 to a depth of 120 meters in 15 minutes, after which the cable began to lower under its own weight.

Industrial applicability.

1. The use of the method and device for starting up a paraffin oil well, allowed to obtain the following positive results:

2. The installation was carried out on a paraffin oil-producing well and cable 5 was lowered into the well at an ambient temperature of 25 ° C below zero in a heated state to a temperature of about 70 ⁰ C;

3. Using the cable conveyor 23, it was easy to lower cable 5 into the well at wellhead pressure of 2.5 MPa, to a depth of 120 meters.

4. Lowering the heated cable 5 to a depth of 1,600 meters, in a carafed well, in a heated state, eliminated the additional cleaning of the well by previously used methods;

5. Over two months of operation, the well debit increased 1.7 times, reaching 57 m ³ per day, which indicates the efficiency of the method and device for putting a paraffin oil producing well into operation.

6. Excluded additional flushing of the well before lowering cable 5, it was not necessary to plug the well to remove the wellhead pressure of 2.5 MPa and cracking of the cable was prevented when lowering it into the well at a negative temperature, otherwise the cable would be damaged.

Claims

CLAIM

1. A method of putting a paraffin oil producing well into operation, including determining the depth of possible paraffin formation, the length of the heating cable (hereinafter cable), its power depending on the flow rate of the product, the melting temperature of the insulating material of the cable, lowering it into the paraffin formation zone of the well, the temperature control of which is supported the entire length of the working part of the cable at 5-50 ⁰ C above the melting point of the wax, the temperature exiting the well outlet stream is maintained at enshey least 50 ⁰ C higher than the maximum temperature of the effluent stream in the absence of a heating cable, characterized in that prior to lowering into the well a cable, wound onto a reel controlled .lebedki, it is heated above 45 ° C and lowered into the well, carrying out simultaneously controlled heating cable in different layers of its winding on the drum, and high wellhead pressure is overcome by the axial force of the conveyor acting on the cable, ensuring alignment of the weight of the deflated cable with the pushing wellhead pressure, and then heating th cable is lowered into the wax formation zone under its own weight.

2. The method according to p. I, characterized in that it further control the flow rate of the product stream leaving the well.

3. The method according to claim 1, characterized in that the cable power is selected depending on the flow rate of the well in the range from 10 to 120 kW.

4. The method according to claim 1, characterized in that before the descent into the well, the heating of the cable is carried out taking into account the ambient temperature.

5. The method according to claim 4, characterized in that at an ambient temperature below

3 ⁰ C before lowering the cable into the well, it is heated above 5O ⁰ C.

6. A device for starting a paraffin oil producing well, comprising a heating cable and a heating control station connected thereto, characterized in that the heating cable is wound onto a winch drum and connected to a power source at one end, while in a wound heating cable at least 1 temperature sensors are installed that are electrically connected to respective temperature measuring devices.

7. The device according to claim 6, characterized in that the heating cable is connected to the power source through sliding contacts.

8. The device according to p. 6, characterized in that the heating cable is connected to the power source through an additional power cable.

9. The device according to p. 6, characterized in that the temperature sensors are installed through at least one layer of cable winding onto the winch drum.

10. The device according to p. 6, characterized in that the temperature measuring devices are directly mounted on the winch drum.

1 1. The device according to p. 6, characterized in that the heating control station contains a controller that ensures the safety of the heating cable.

12. The device according to claim 6, characterized in that in the heating cable each sensor corresponds to one common core and another core to each sensor.

13. The device according to claim 6, characterized in that the contacts of the heating conductors are closed in the zone from 0.03 to 5 m from the end of the cable, while ensuring a cable end density approaching 100 kg / dm ³ .

14. A device for launching a paraffin oil producing well, comprising at least guide and idler rollers and a heating cable located in the well in a zone of possible paraffin formation and a heating control station connected thereto, characterized in that it comprises a single-drive cable conveyor, providing its descent and rise in the wellhead part of the well under the condition of increased wellhead pressure, comprising a detachable housing consisting of two parts, one of which is drive, and W paradise cover, while in each part of the housing there are independent rollers, on the shafts of which gears are rigidly fixed respectively to them, located with the possibility of providing kinematic communication with each other and the rollers, while in the cover there is an even number of gears, shafts and rollers, and an odd number of them is located in the drive housing part, and one of the shafts is connected to the drive, and the cover shafts are located strictly in the center between the shafts of the drive housing part, while the gears of the drive housing part are paired with corresponding gear cover.

fifteen . The device according to claim 14, characterized in that the base of the tension roller is rigidly fixed to the anchor pipe at a distance of 1 to 10 m from the center of the fountain fittings, and the cable mount is rigidly mounted on the base of the tension roller.

16. The device according to p. 14, characterized in that the tension roller is mounted on the armature having 0.5 m at an angle to the vertical rack from 800 to 1200, and the cable mount is rigidly mounted on the armature.

17. The device according to p. 14, characterized in that the tension roller is installed within the base of the guide roller block and the foundation of the fountain armature, and the cable mount is rigidly mounted on the armature, where the vertical components of the armature are a continuation of one another.

18. The device according to p. 14, characterized in that the drive is connected to the middle shaft of the drive part of the housing for even distribution of force from two sides over an even number of rollers and gears.

19. The device according to p. 14, characterized in that the casing of the conveyor is equipped with constricting elements that regulate the power of the conveyor.

20. The device according to p. 14, characterized in that the acting axial force of the conveyor on the cable is above 15 MPa, ensuring the alignment of the weight of the deflated cable with pushing wellhead pressure.

21. The device according to p. 14, characterized in that after lowering the cable into the well and removing the conveyor, fasteners are installed on the cable above the wellhead gland to ensure that the cable is held in suspension. Blowout devices are rigidly attached to the mounting nodes.