RU2473795C1 - Development method of heavy oil or bitumen mine field with control of well product extraction - Google Patents

Abstract

FIELD: oil and gas industry.SUBSTANCE: development method of heavy oil or bitumen deposit with control of well product extraction involves construction of upper injection and lower production wells with horizontal sections located one above another. At construction of wells their horizontal sections are equipped with filters installed opposite productive formation zones. Inside filter with non-perforated interval in production well there arranged is a shank provided with inlet holes dividing the filter into extraction zones. Besides, shank is equipped on the inner side with a stock with side channels. Inner space of stock is interconnected with inlet of pump lowered to production well on the tubing string with possibility of longitudinal movement of the tubing string together with pump and stock in the shank. Heat carrier is pumped through horizontal injection well with warming-up of the formation by creating the steam chamber, and product is extracted through horizontal production well. Thermograms of steam chamber are taken, the chamber's warm-up state is analysed for uniform heating and available temperature peaks, and considering the obtained thermograms, uniform heating of steam chamber is performed. Before the tubing is lowered to production well, first, stock is lowered with a shank concentrically arranged on it and fixed in transport position with a shear screw. Besides, on the outer side of the shank lower end there installed is heat-resistant packer; after the stock is lowered to production well, lower end of tubing is put on its upper end. Tubing is equipped with a pump. Tubing is lowered to production well till the packer is arranged at non-perforated interval of production well filter; after that, packer is installed by dividing the filter of production well into two extraction zones - initial and final. Uniform heating of steam chamber is performed by supplying the heat carrier through injection well. Penetration of heat carrier and/or formation water to the pump inlet is avoided by controlling the product extraction to the pump inlet from the initial extraction zone. Besides, product extraction volume is reduced in the initial extraction zone where temperature peaks occur. For that purpose, inlet shank holes corresponding to the initial extraction zone are made with reduction of carrying capacity from face to head, and side channels of stock are provided with possibility of alternating interaction with one of inlet shank hole in the initial extraction zone. This is performed by restricted longitudinal movement of pipe string together with pump and stock relative to shank by increasing or reducing the number of connection pipes on upper end of pipe string depending on the distance between inlet holes of the shank. Pipe string is fixed on the head of production well in the required position by means of a face plate on a supporting flange, and shank hole corresponding to the final extraction zone is made in the form of an open stock end.EFFECT: improving the control of product extraction volume from extraction zones; simpler erection and lower metal consumption on the design.3 dwg

Description

The invention relates to the oil industry and may find application in the development of deposits of high viscosity and bitumen oil.

There is a method of developing a heavy oil or bitumen field with regulation of the selection of well production (patent RU No. 2413363, IPC 8 ЕВВ 43/24, published in Bulletin No. 5 of 02/20/2011), including the construction of upper injection and lower producing wells with horizontal sections located one above the other, the injection of the heat carrier through a horizontal injection well with heating of the formation, the creation of a steam chamber and the selection of products through a horizontal production well, in which thermograms of the steam chamber are taken, are analyzed with the melting of its heating for uniformity of heating and the presence of temperature peaks, and taking into account the obtained thermograms, uniformly heat the steam chamber by changing the production sampling zones, and when constructing wells, their horizontal sections are equipped with filters installed opposite the zones of the reservoir, inside the filter in the production well, a pump shank is placed , which is lowered on the pipe string and equipped with bypass channels with safety valves, and a shank equipped with inlet openings, times They beat the filter into the sampling zones, at a distance that excludes the breakthrough of the coolant when changing the sampling zone, they are equipped on the outside below the upper hole with a packer installed above the filter, and on the inside with a piston with a rod, the inner space of which is connected through the check valve to the pump inlet, the space between the rod and the shank, between the inlet openings of the shank, hermetically disconnect the annular inserts before descent, breaking the shank into selection sections that are communicated by the side channels through one with the inner by moving the rod to change the selection zones in the event of temperature peaks, the selection of products by the pump is stopped in the pipe string, creating excessive pressure, which, transmitted through the bypass channels through the closed non-return valve to the piston, displace it together with the rod so that its side channels passing through the annular inserts, the inner space of the rod is communicated with neighboring previously unused sampling sections, after which the production sampling is resumed until temperature peaks in front of the sections about in the corresponding sampling zones, to prevent breakthrough of the coolant, the pump stops taking the product, in the annulus of the pipe string creates excessive pressure, which, transmitted through the upper holes of the shank due to the packer to the shank on the back of the piston, moves the piston with the shank to its original state, after whereby the selection of products is resumed from the initial sections and selection zones, during operation, the cycles, if necessary, change the sections and selection zones are repeated.

The disadvantages of this method are:

- firstly, the high metal consumption of the structure and, as a consequence, the high financial costs of implementing the method, which is associated with the descent into the production well of the liner and rod type "pipe in pipe" in the entire length of the filter of the horizontal section of the production well;

- secondly, a complex technological process of implementing the method, since in order to change the selection zones, it is necessary to create hydraulic pressure in the pipe string, which acts on the piston through the bypass channel through the closed check valve, due to which the rod moves relative to the shank and the selection zones change in the producing well;

- thirdly, the throughput of products received by the pump from the selection zones is not regulated, but only the selection zones change (either there is a selection from a certain zone or there is no selection).

The closest in technical essence is the method of developing a heavy oil or bitumen field with regulation of the selection of well production (patent RU No. 2413068, IPC 8 ЕВВ 43/24, published in bulletin No. 6, dated February 27, 2011), including the construction of an upper injection and lower production wells with horizontal sections located one above the other, pumping coolant through a horizontal injection well with heating the formation by creating a steam chamber and taking products through a horizontal production well, in which t steam chamber diagrams, analyze the state of its heating for heating uniformity and the presence of temperature peaks, and taking into account the obtained thermograms, the steam chamber is uniformly heated, changing production zones, and during the construction of wells, their horizontal sections are equipped with filters installed opposite the zones of the reservoir, inside the filter in a shank equipped with inlet openings dividing the filter into extraction zones is placed at the production well at a distance that excludes the breakthrough of the coolant when changing the selection zone, the liner is equipped from the inside with a rod, the inner space of which is communicated with the pump inlet, which is lowered into the production well on the pipe string, which is equipped with a double-acting hydraulic jack at the mouth, and the space between the rod and the liner between the input openings of the liner is hermetically disconnected before descent ring inserts, breaking the shank into sections of selection, which are communicated by side channels through one with the inner space of the rod, to change the zones for selection at the occurrence of temperature peaks, the selection of products by the pump is stopped, excessive pressure is created in the hydraulic jack, which leads to longitudinal movement of the pipe string together with the pump and the rod in the liner so that its side channels, passing through the ring inserts, communicate the inner space of the rod with neighboring sections not previously used selection, after which the selection of products is resumed until temperature peaks occur opposite the sampling sections in their respective sampling zones, to exclude the breakthrough of the coolant The products are stopped by the pump, an excessive back pressure is created in the hydraulic jack, which leads to longitudinal movement in the liner and the pipe columns with the pump and the rod returning to their original state, after which the product selection is resumed from the original sections and selection zones, during operation cycles are necessary if necessary shank selection zones are repeated.

The disadvantages of this method are:

- firstly, the high metal consumption of the structure and, as a consequence, the high financial costs of implementing the method, which is associated with the presence of a hydraulic jack installed at the mouth of the producing well, as well as with the descent of the shank and rod in the pipe-in-pipe type into the entire length of the filter of the horizontal section of the producing well;

- secondly, to move the rod relative to the liner when changing the production zones, it is necessary to install a hydraulic jack at the wellhead, the manufacture of which requires additional financial costs, and the hydraulic jack piston is moved using a pump unit located at the wellhead, in addition, the rod is moved relative to the shank is limited by the length of the piston stroke of the hydraulic cylinder and does not allow to precisely fix the rod relative to the shank in a predetermined upper position without backing up the pump a clear aggregate;

- thirdly, the throughput of products received by the pump from the selection zones is not regulated, but only the selection zones change (either there is a selection from a certain zone or there is no selection). For example, it is impossible to reduce the volume of product withdrawals from the zone into which the coolant and / or produced water broke through, but you can only turn off this zone;

- fourthly, according to the results of experimental field work, it was revealed that the coolant breaks into the horizontal section of the producing well in its initial zone (from the side of the wellhead). This is due to the fact that the bulk of the coolant is pumped into the reservoir in the initial zone of the horizontal section of the producing well.

The objectives of the invention are to control the volume of production from the zones of production of a producing well in the process of developing a heavy oil or bitumen field, depending on the presence of temperature peaks in thermograms recorded in the producing well by controlling the throughput of the inlet openings in the initial production sampling zone and elimination (decrease volume) of coolant and / or produced water from the initial selection zone to the pump intake with rigid fixation of the pipe string at the wellhead, and t kzhe simplifying assembly, reducing the construction of metal and as a consequence, the reduction of financial costs of the process.

The problem is solved by the method of developing a heavy oil or bitumen field with regulation of the selection of well production, including the construction of the upper injection and lower production wells with horizontal sections located one above the other, when constructing wells, their horizontal sections are equipped with filters installed opposite the zones of the reservoir, inside the filter with a non-perforated interval in the production well is placed a shank equipped with inlets that break the fil tr to the extraction zones, while the liner is equipped with a rod with side channels from the inside, the inner space of the rod is communicated with the pump inlet, which is lowered into the production well on the pipe string with the possibility of longitudinal movement of the pipe string with the pump and the rod in the liner, the coolant is pumped through a horizontal injection well with heating the formation by creating a steam chamber and selecting products through a horizontal production well, in which thermograms of the steam chamber are taken, the state of its heating on uniform heating and the presence of temperature peaks, and taking into account the obtained thermograms, the steam chamber is uniformly heated.

What is new is that before the pipe string is lowered into the production well, the rod is first lowered with a shank concentrically placed on it, a shear screw fixed in the transport position, and a heat-resistant packer is installed on the lower end of the shank, after the rod is lowered into the production well, the upper end is screwed the lower end of the pipe string, the pipe string is equipped with a pump, the pipe string is lowered into the production well until the packer is placed in the unperforated interval of the production well filter, after hours the packer is planted, hermetically separating the filter of the producing well into two extraction zones - the initial and final, they uniformly heat the steam chamber by supplying the coolant through the injection well, eliminating the breakthrough of the coolant and / or formation water at the pump inlet by adjusting the selection of products to the pump inlet from the initial selection zones, moreover, in the initial selection zone, where temperature peaks occur, the volume of production sampling is reduced, for this, the shank inlets corresponding to the initial in the selection zone, they are performed with decreasing throughput from the bottom to the mouth, and the side channels of the rod are made with the possibility of alternating communication with one of the inlet openings of the shank in the initial selection zone, which is accomplished by limited longitudinal movement of the pipe string with the pump and the rod relative to the shank by building or reducing the nozzles at the upper end of the pipe string depending on the distance between the inlet openings of the liner, and fixing the pipe string at the mouth of the producing well is not necessary Faceplate upright position is carried out on the supporting flange, the shank and the hole corresponding to the final selection area is configured as an open end of the plunger.

Figure 1 schematically shows the proposed method for developing a heavy oil or bitumen field with regulation of the selection of well production.

In Fig.2 shows an enlarged view - A part of a horizontal section of the production well shown in Fig.1.

Figure 3 schematically shows the mouth of a producing well.

First, the construction of the upper injection 1 (see Fig. 1) and the lower producing wells 2 with horizontal sections 3 and 4, respectively, located one above the other and opening the reservoir 5 with heavy oil or bitumen, is carried out during the construction of injection 1 and production 2 wells horizontal sections 3 and 4, respectively, are equipped with filters 6 and 7.

An injection well 1 is used to pump coolant into a producing formation 5, and a producing well 2 is used to produce heavy oil or bitumen (products) from a producing formation 5. Next, an injection well 1 is provided with a tubing string 8 with a horizontal perforated section 9 .

Before the descent of the pipe string 10 (see FIG. 1), the rod 11 (see FIG. 2) with the shank 12 concentrically placed thereon 12 fixed in the transport position with the shear screw 13 (see FIG. 2) is lowered into the production well 2 with a length measurement; )

Outside, a heat-resistant packer 14 is installed at the lower end of the shank 12 (see FIG. 1). After the rod 11 is lowered into the production well 2, the lower end of the pipe string 10 is screwed onto its upper end and the pipe string 10 is equipped with pump 15. The pipe string 10 is lowered with measurement its length in the production well 2 before the placement of the packer 14 (see figure 2) in the non-perforated interval 16 (length b) of the filter 7 of the production well 2 (see figure 1), after which the packer 14 is planted (see figure 2 ), hermetically separating the filter 7 of the producing well into two extraction zones: initial and final, Q ₁ and Q ₂ , respectively, each of which divides the filter into two sections of length L ₁ and L _2, respectively. For example, with a filter length of 7 L = 205 m, a length of L ₁ = 100 m, b = 5 m (non-perforated section of the filter 7 for packing packer 14), a length of L ₂ = 100 m. The pipe string 10 (see figure 1) equipped with a pump 15 (for example, a borehole pump of differential type NN-2SP for the production of viscous oil, supplied by LLC TD Elkam-Neftemash Russia, Perm).

Packer 14 (see figure 2) is heat-resistant, which allows it to work at high temperatures, for example, manufactured by the Packer research and production company (Oktyabrsky, Republic of Bashkortostan), a mechanical double-acting packer of an axial installation of the PRO-YaJ-O-M brand -122 T, designed for a maximum temperature of the working medium of 150 ° C.

In the shank 12, the inlet openings are made in the form of rows of inlet openings 17 ¹ , 17 ² ... 17 ⁿ , corresponding to the initial selection zone Q ₁ (before the heat-resistant packer 11 from the side of the wellhead of the producing well 2) with a decrease in throughput from the bottom to the mouth, and the side channels 18 of the rod 11 is configured to alternately communicate with one of the inlets 17 ¹ , 17 ² ... 17 ^{n of the} shank 12 in the initial selection zone Q ₁ , and the hole 19 corresponding to the final selection zone Q ₂ is made in the form of the open end of the rod 11.

The number of inlet openings 17 ¹ , ... 17 ^{n of the} shank 12 corresponding to the initial sampling zone Q ₁ , and the geometrical dimensions (diameter) of the hole 19 of the open end of the rod 11 corresponding to the final sampling zone Q ₂ (behind the packer 11 from the bottom of the producing well 2 depend on the diameter of the rod 11 and the liner 12, as well as the volume of selected products through each of the extraction zones of the producing well 2 and are determined empirically.

The performance of the pump 15 (see figure 1) is calculated based on the maximum throughput of the largest inlet 17 ⁴ (see figure 2), corresponding to the initial selection zone Q ₁ , and the hole 19, corresponding to the final selection zone Q ₂ .

The total volume of selected products through the filter 7 (see Fig. 1) of the producing well 2 from both selection zones is:

where Q ₁ - the volume of products taken from the initial selection zone, m ³ / day;

Q ₂ - the volume of products taken from the final selection zone, m ³ / day;

Q - the total volume of products taken from the initial and final selection zones, m ³ / day.

For example: Q ₁ = 10 m ³ / day, Q ₂ = 10 m ³ / day.

Then substituting in the formula (1), we obtain: Q = 10 m ³ / day + 10 m ³ / day = 20 m ³ / day.

In the initial production selection zone Q _1, inlets made in the shank 12 (see FIGS. 1 and 2) are presented, for example, in the form of four inlets 17 ¹ , ... 17 ⁴ (see FIG. 2) arranged in rows along the perimeter of the shank 12 with appropriate regulation (reduction) of the throughput of products coming from the initial selection zone Q ₁ to the inlet 20 (see Fig. 1) of the pump 15 due to changes in cross-sectional areas: S ₁ = l / 4Q ₁ ; S ₂ = 1/2 Q ₁ ; S ₃ = 3 / 4Q ₁ ; S ₄ = Q ₁ ; (see figure 2), where S ₁ ; S ₂ ; S ₃ ; S ₄ - the cross-sectional area, respectively, of the inlets 17 ¹ , ... 17 ⁴ , located opposite the first selection zone Q ₁ .

The inlet 17 ^{1 of the} shank 12 corresponds to the minimum throughput, and the inlet 17 ^{4 of the} shank 12 corresponds to the maximum throughput of the first extraction zone Q ₁ .

The throughput of the side channels 18 (see FIG. 2) of the rod 11 is higher than the throughput of the largest of the inlets 17 ¹ , ... 17 ⁴ located in rows along the perimeter of the shank 12. For example, the cross-sectional area (S _b ) of the side channels 18 of the rod 11 corresponds to a throughput of 30 m ³ / day, which is more than the volume of selected products from the zone Q ₁ = 10 m ³ / day.

The shank 12 is equipped from the inside with a rod 11, rigidly connected to the inlet 20 (see figure 1) of the pump 15. The inner space of the rod 11 (see figure 2) is hydraulically in communication with the inlet 20 (see figure 1) of the pump 15.

The control of the inlet throughput capacity during production selection during operation of the production well 2 from the initial production selection zone Q ₁ is performed by longitudinally moving the pipe string 10 together (see FIG. 1) with the pump 15 and the rod 11 relative to the liner 12 by increasing or decreasing the number of nozzles 21 ¹ ; 21 ² ; 21 ³ (see figure 3) at the upper end of the pipe string 10.

Lengths of branch pipes 21 ¹ ; 21 ² ; 21 ³ are equal to the distance 1 ₁ , 1 ₂ , 1 ₃ between the inlets 17 ¹ , ... 17 ⁴ (see figure 2), for example, 1 meter, and the fixation of the pipe string 10 (see figure 3) with pipes 21 ¹ ; 21 ² ; 21 ³ at its upper end at the mouth of the producing well 2 (see FIG. 1), implement a faceplate 22 (see FIG. 3) on the support flange 23.

In the transport position, as shown in figure 2, the selection of products by the pump 15 (see figure 1) along the string of pipes 10 from the production well 2 is carried out simultaneously from both zones of selection Q ₁ and Q ₂ in a ratio of 50% to 50%, respectively while the selection of products from the selection zone Q _{1 is} carried out through the largest inlet 17 ⁴ (see figure 2), and the selection of products from the selection zone Q _{2 is} carried out through the hole 19 of the rod 11.

They start to pump coolant from a steam generator (not shown in the drawing) into the reservoir 5 (see Fig. 1) through the tubing string 8 through its horizontal perforated section 9 and the filter 6 of the horizontal section 3 of the injection well 1. Depending on the permeability of the reservoir 5 the injection pressure is selected and, depending on the effective oil-saturated thickness of the reservoir 5, the volume of injected steam is determined, and the reservoir 5 is heated to create a steam chamber.

Heated in the steam chamber, heavy oil or bitumen from the reservoir 5 first enters the filter 7, divided into the initial and final extraction zones Q ₁ and Q _{2 of the} horizontal section 4 of the producing well 2, and then from the initial extraction zone Q _{1 of the} filter 7 (see figure 2) through the inlet 17 ^{4 of the} shank 12 and the side channels 18 of the rod 11 into the inner space of the rod 11, at the same time, the products enter the inner space of the rod 11 through the hole 19, corresponding to the final selection zone Q ₂ . Thus, the product through the inner space of the rod 11 enters the inlet 20 of the pump 15 (see figure 1), which pumps (takes) heated heavy oil or bitumen to the surface of the pipe 10.

During the selection of heated heavy oil, go bitumen, the coolant (steam) breaks out from the steam chamber into the filter 7 of the producing well 2 and / or produced water in the initial extraction zone Q _{1 of} length L ₁ (see Fig. 2), as evidenced by the presence of temperature peaks in thermograms, which are based on the results of these temperature sensors (not shown in figures 1, 2, 3) installed in horizontal sections 3 and 4 (see figure 1), respectively, of injection 1 and production 2 wells.

A breakthrough in the extraction zone Q _{1 of} length L ₁ occurs because the bulk of the coolant pumped into the injection well 1 enters the reservoir from zone 24 (see Fig. 1) of the horizontal section 3 and, propagating through the reservoir, leads to a breakthrough in the initial zone (see figure 2) selection Q ₁ length L ₁ horizontal section 4 (see figure 1) of the producing well 2.

To exclude the breakthrough of the coolant (during the breakthrough, the temperature peaks are directed upwards) and / or the breakthrough of formation water (during the breakthrough, the temperature peaks are directed downward) into the filter 7 (see Fig. 2) in the extraction zone Q _{1 of} length L ₁ , as well as to uniformly the spread of the steam chamber and the reduction of water cut in the extracted product, the volume of product sampling from this selection zone is reduced. For example, they reduce the volume of product selection from the initial selection zone Q _{1 by} half, i.e. 50% of the value of Q ₁ , for this it is necessary that opposite the side channels 18 of the rod 11 there is an inlet 17 of the shank 12 having a cross-sectional area S ₂ = 1 / 2Q ₁ , so that the selection of products from the initial selection zone Q _{1 is} reduced to 5 m ³ / day (10 m ³ / day / ² = 5 m ³ / day).

To do this, turn off the pump 15 (see Fig. 1), remove the faceplate 22 (see Fig. 3) from the support flange 23. At the mouth of the producing well 2 (see Fig. 1), pull the pipe string 10 upward (see Fig. .1, 3), for example, using a hoist for underground well repair with a force of 10 kN, while the shear screw 13 (see figure 2) is destroyed. Next, raise the pipe string 10 (see figure 3) with a pump 15 (see figure 1) and a rod 11 (see figure 1) for a length l ₁ = 1 meter, while the inlet 17 ^{2 of the} shank 12 is installed opposite lateral channels 18 of the rod 11. Next, remove (unscrew) the pipe 21 ² (see figure 3) and fix the pipe string 10 through the pipe 21 ² and the faceplate 22 on the support flange 23, start the pump 15 (see figure 1) . Resume the selection of products from the initial selection zone Q ₁ and the final selection zone Q ₂ , while the selection of products from the initial selection zone Q ₂ is halved, i.e. up to 5 m ³ / day.

With the subsequent removal of the thermograms, the absence of temperature peaks in the thermograms indicates the exclusion or reduction of the breakthrough of the coolant and / or produced water in the extraction zone Q _{1 of} length L ₁ and the uniform distribution of the steam chamber in the reservoir 5 (see Fig. 1).

Subsequently, throughput control during the selection of products from the initial selection zone Q _{1 of the} producing well 2 during the development of a heavy oil or bitumen field is carried out by longitudinal movement from the bottom to the mouth or vice versa along the pipe string 10 with pump 15 and rod 11 relative to liner 12 by building up ( by inversion) or reduction (lapel) of the nozzles 21 ¹ ; 21 ² ; 21 ³ (see FIG. 3) at the upper end of the pipe string 10 with subsequent fixation of the pipe string 10 at the mouth of the producing well 2 (see FIG. 1) in the required position with the faceplate 22 (see FIG. 3) on the support flange 23.

The proposed method allows you to adjust the volume of production from the selection zones, thereby achieving uniformity in the heating of the steam chamber in the reservoir and eliminate (reduce volumes) the ingress of coolant and / or formation water from the initial selection zone to the pump inlet with rigid fixation of the pipe string at the wellhead , also the descent into the production well of a shank having a length of 6-8 m, together with the rod, simplifies installation, reduces the metal consumption of the structure and, as a result, reduces the financial cost of implementing the method.

Claims (1)

A method of developing a heavy oil or bitumen field with regulation of the selection of production wells, including the construction of the upper injection and lower production wells with horizontal sections located one above the other, when constructing wells, their horizontal sections are equipped with filters installed opposite the zones of the reservoir, inside the filter with an unperforated interval of the production well has a liner equipped with inlet openings dividing the filter into extraction zones, while The ovik is equipped with a rod with side channels from the inside, the internal space of the rod is communicated with the pump inlet, lowered into the production well on the pipe string with the possibility of longitudinal movement of the pipe string with the pump and the rod in the liner, the coolant pumped through a horizontal injection well with formation heating by creating a steam chamber and selection of products through a horizontal producing well, in which thermograms of the steam chamber are taken, the state of its heating is analyzed for uniform heating and e temperature peaks, and taking into account the obtained thermograms, the steam chamber is uniformly heated, characterized in that before the pipe string is lowered into the production well, the rod is first lowered with a shank concentrically placed on it, a shear screw fixed in the transport position, and installed outside the lower end of the shank heat-resistant packer, after the rod is lowered into the production well, the lower end of the pipe string is screwed onto its upper end, the pipe string is equipped with a pump, the pipe string is lowered to add the borehole before the packer is placed in the non-perforated interval of the producer’s filter, after which the packer is planted, hermetically separating the producer’s filter into two extraction zones - the initial and final ones, the steam chamber is uniformly heated by supplying the coolant through the injection well, eliminating the breakthrough of the coolant and / or reservoir water at the pump inlet is carried out by regulating the selection of products at the pump inlet from the initial selection zone, and in the initial selection zone, where temperature e peaks, the production sampling volume is reduced, for this, the shank inlet openings corresponding to the initial sampling zone are performed with decreasing throughput from the bottom to the mouth, and the lateral stem channels are made with the possibility of alternating communication with one of the shank inlet openings in the initial sampling zone, which produce limited longitudinal movement together of the pipe string with the pump and the rod relative to the shank by increasing or reducing the nozzles at the upper end of the pipe string depending on the distance tions between input shank hole, and fixing the pipe string at the wellhead production well in position on faceplate performed supporting flange, the shank and the hole corresponding to the final selection area is configured as an open end of the plunger.

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