RU76964U1 - EQUIPMENT FOR SIMULTANEOUS-SEPARATE OPERATION ON A SINGLE-LIFT COLUMN OF PIPES OF TWO LAYERS IN ONE WELL - Google Patents

Abstract

The equipment can be used in the oil and gas industry for the development and production of oil from two layers in one well through a single-lift pipe string. The equipment contains a single-lift pipe string (1), a jet pump (2) with a depression (4) or production (3) inserts, lowered into the well on the pipe string (1) to the zone of the upper layer, a packer (5) dividing the production string into an overpack zone (7), including the zone of the upper layer, and a sub-packer zone (6), including the zone of the lower layer, the upper packer (8) located above the packer (5) and packaged above the zone of the upper layer, the equipment also contains a lower (9), interpacker (10) and upper (11) circulation valves, as well as interpacker (12) and upper s (13) thermal compensators, and a lower (14) mezhdupakerny (15) and upper (16) landing nipple. The technical solution of the equipment allows for the production of oil from two layers, the development and killing of the well in its entirety and sequentially in any order, to expand the operational ability, to increase the safety and reliability of operation, 2il.

Description

The utility model relates to the oil and gas industry, namely the layout of equipment for the development and production of oil from two layers in one well through a single-lift pipe string.

A well-known well installation for the simultaneous-separate development of several production facilities, comprising a pipe string with one or more packers, forming nadpakerny and podpakerny zones equipped with nipples or flow control valves, RU No. 2211311 C2, EV 43/14, 2003.08.27; RU No. 2313659 C1, ЕВВ 43/14, 2007.12.27; RU No. 2262586 C2, E21B 43/12, E21B 34/06, 2005.10.20; RU No. 50596; RU No. 22253009 C1, ЕВВ 43/14, 2005.05.27; RU No. 64279 U1, Е21В 43/14, 2007.06.27; RU; No. 65127 U1, ЕВВ 43/14, 2007.07.27.

A known method of operation of a downhole jet installation in the operation of multilayer deposits, which consists in installing an electric centrifugal pump and a jet pump in a well fixed with packers packaged between the upper and lower oil reservoirs, RU No. 2282759 C1, EV 43/14, 2006.08.27.

A device for the simultaneous operation of oil-saturated layers of the well, including a pipe string, a liner and a pump located on the lower end of the pipe string, a packer mounted on the liner between the layers, RU No. 2315175 C1, EV 43/00, 2008.01.20.

A device for simultaneous separate production of borehole products and pumping water under the reservoir, including a pipe string, an upper pump located in a pipe string below the level of accumulated oil, a lower pump located below the reservoir and having a shank with a check valve and a packer installed above the receiving reservoir while the total productivity of the upper and lower pumps is selected from the production ability of the reservoir, RU No. 2297521 C1, E21B 43/14, 2007.04.20.

A known installation for the simultaneous separate operation of two layers containing a column of lift pipes, a sucker rod pump, a packer, a liner, a suction valve, RU No. 2297522 C1, E21B 43/14, 2007.04.20; RU No. 2221136 C1, E21B 43/14, 2004.01.10; RU No. 49106 U1, E21B 43/14, 2005.11.10.

Known equipment for the operation of two layers in one well, including a pipe string, a pump lowered into the well on a pipe string to the upper formation zone, a packer dividing the production string into an overpacker zone including a zone

the upper layer, and the under-packer zone, including the zone of the lower layer, RU No. 2296212 C2, ЕВВ 43/14, 2007.03.27.

This technical solution was adopted as the "closest analogue" of this utility model.

The equipment of the "closest analogue" has limited operational capabilities and is aimed at the selection of oil from reservoirs having different viscosities and performance, measuring the dynamic level in the reservoirs and restoring it by changing the operation of a pump equipped with valves.

The present utility model is based on solving a problem that allows expanding the operational capability of equipment, ensuring oil production from two reservoirs, developing and killing a well in whole and in succession in any order, and increasing the safety and reliability of operation.

According to the utility model, this problem is solved due to the fact that the equipment includes a single-lift pipe string, a pump lowered into the well on the pipe string to the upper formation zone, a packer dividing the production string into an overpacker zone including the upper formation zone, and a sub-packer zone, including the zone of the lower reservoir.

The equipment contains an upper packer located above the packer and packaged at least three above the zone of the upper layer

circulation valves in the form of lower, inter-packer and upper circulation valves, controlled from the mouth, at least two heat compensators in the form of inter-packer and upper heat compensators and at least three mounting nodes in the form of lower, inter-packer and upper mounting nipples, and as a pump, a jet pump with a depression or production inserts was used, while the lower landing nipple, the lower circulation valve, the packer, the interpacker landing nipple, the interpacker heat compensated p, the inter-packer circulation valve located in the sub-packer and packer areas, the upper packer, the upper landing nipple, the upper circulation valve, the upper heat compensator, and the jet pump located above the zone of the upper layer are arranged in series and connected by a pipe string to the faceplate.

The applicant has not identified sources containing information about the technical solution that is identical to the characteristics given in the formula of this utility model, this determines, according to the applicant, the utility model meets the criterion of “novelty”.

The essence of the utility model is illustrated by drawings, which depict:

figure 1 - Layout of the equipment during the operation of the jet pump with a depression insert;

figure 2 - Layout of the equipment during operation of the jet pump with a mining insert.

Equipment includes:

Pipe string - 1.

Jet pump - 2,

production insert (jet pump 1) - 3,

Depression insert (jet pump 1) - 4.

Packer - 5,

sub-packer zone - 6,

nadpakerny zone - 7.

Top packer - 8.

Bottom circulation valve - 9.

Interpacker circulation valve - 10.

Upper circulation valve -11.

Interpacker thermal compensator - 12.

Upper heat compensator - 13.

Lower landing nipple - 14.

Interpacker landing nipple - 15.

Upper landing nipple - 16.

Shank 17.

Faceplate 18.

Equipment for operating the upper and lower layers in one well contains a pipe string 1, a jet pump 2, a packer 5, an upper packer 8, a lower 9, an interpacker 10, an upper 11 circulation valves, an interpacker 12 and an upper 13 thermal expansion joints, landing nodes in the form of a lower 14, interpacker 15 and upper 16 landing nipples.

The pipe string 1 is single-lift.

The jet pump 2 is lowered into the well on the pipe string 1 to the zone of the upper reservoir. The jet pump 2 is made with interchangeable mining 3 and depression 4 inserts.

The packer 5 divides the production casing into a sub-packer zone 6, including the lower formation zone, and an over-packer zone 7, including the upper reservoir zone.

The upper packer 8 is placed above the packer 5 and packaged above the zone of the upper formation.

Landing units are made in the form of lower 14, interpacker 15 and upper 16 landing nipples.

The interpacker landing nipple 15 is installed above the packer 5 and ensures the flow is terminated when killing it, using cable technology, with a plug (not shown) during the development of the lower layer. Upper

the landing nipple 16 is installed above the upper packer 8 and ensures the termination of the flow when killing it, using cable technology, with a plug (not shown) during the development of the upper layer. The interpacker 15 and the upper 16 landing nipples provide a flow supply when removing from them, using cable technology, plugs (not shown) during oil production from the upper and lower layers.

The lower landing nipple 14 is installed on the liner 17 and ensures the cessation of flow from the lower layer and retention of killing fluid when installing, using cable technology, plugs (not shown) for killing the well, if necessary.

Between the packer 5 and the upper packer 8, an interpacker thermal compensator 12 is installed. Above the upper packer 8, an upper thermal compensator 13 is installed. The interpacker thermal 12 and upper thermal compensator 13 compensate for the thermal expansion of the pipe string 1 and eliminate the effect of thermal expansion on the packer 5 and the upper packer 8, respectively.

The lower 9 and interpacker 10 circulation valves are installed in the subpacker 6 and superpacker 7 zones of the packer 5, respectively, and the upper circulation valve 11 is installed above the upper packer 8. The lower 9, interpacker 10 and upper 11 circulation valves are controlled from the mouth.

Lower landing nipple 14, lower circulation valve 9, packer 5, interpacker landing nipple 15, interpacker heat compensator 12, interpacker circulation valve 10, upper packer 8, upper landing nipple 16, upper circulation valve 11, upper compensator 13, jet pump 2 are placed in series and connected by a pipe string 1 with a faceplate 18.

The installation of equipment is as follows.

The well plugged in water is lowered, sequentially installed, the lower landing nipple 14, the lower circulation valve 9, the packer 5, the interpacker landing nipple 15, the interpacker heat compensator 12, the interpacker circulation valve 10, the upper packer 8, the upper landing nipple 16, the upper circulation valve 11 , upper heat compensator 13, jet pump 2.

The descent of the equipment (figure 1) is carried out with the closed lower 9, interpacker 10 and upper 11 circulation valves.

Packer 5 is sealed between the upper and lower layers and its tightness is checked by the annulus.

The interpacker circulation valve 10 is opened and the upper packer 8 is sealed above the zone of the upper layer, after which its installation is checked for leaks.

Mount the faceplate (not shown) on the faceplate 18. Close the interpacker circulation valve 10 and install in the jet pump 2 the depressant insert 4 (Fig. 1).

Carry out the development of the lower layer. Serve the working fluid in the jet pump 2, creating a depression on the lower reservoir, and causing an influx of oil from the lower reservoir. After receiving the largest influx of oil from the lower reservoir, the jet pump 2 is stopped and a blind plug (not shown) is lowered into the interpacker landing nipple 15.

Carry out the development of the upper layer. The inter-packer circulation valve 10 is opened and the working fluid is again fed into the jet pump 2. The greatest flow of oil from the upper reservoir is caused, and then the jet pump 2 is stopped. The blind plug is installed in the upper landing nipple 16. The upper circulation valve 11 is opened, replaced in the jet pump 2 depressant insert 4 to production insert 3 (figure 2) and replace the working fluid in the annulus above the upper packer 8 with oil. Close the upper circulation valve 11 and remove from the upper 16 and the interpacker 15 landing nipples of the tube. The well is mastered and gushes.

If it is necessary to replace equipment, the well is drowned out with water.

Install a stopper (not shown) in the lower mounting nipple 14, open the lower circulation valve 9, and extinguish liquid through the pipe string 1 into the packer zone 6 of the packer 5. Open

interpacker circulation valve 10 and under the upper packer 8 serves a kill fluid. Open the upper circulation valve 11 and above the upper packer 8 replace the oil with a kill fluid. Dismantle the fountain fittings (not shown) and lift the equipment, sequentially tearing the upper packer 8 and packer 5.

The installation of the upper packer 8 over the zone of the upper layer and packing of the packer 5 between the layers increase the safety and reliability of equipment operation.

The functionality of the circulation valves 9, 10, 11 and the landing nipples 15, 16, as well as the implementation of the jet pump 2 with interchangeable production 3 and depression 4 inserts allow for the development and production of oil simultaneously from two layers or separately from either of them.

The functionality of the circulation valves 9, 10, 11 and the landing nipple 14 provides for killing the well when replacing equipment, if necessary.

Control of circulation valves 9, 10, 11 from the wellhead, plugging of landing nipples 14, 15, 16 plugs expand operational capabilities: reservoir development, oil production, well plugging, if necessary, geophysical surveys of each reservoir separately, without plugging the well.

Placing the heat compensators 12 and 13 on the pipe string 1 reduces the effect of thermal expansion from the pipe string 1 on the packers 5 and 8 and increases the safety of the equipment.

The proposed equipment includes mechanisms, instruments, devices that are widely used in the oil and gas industry and pilot tests determine, according to the applicant, his compliance with the criterion of "industrial applicability".

Claims (1)

Equipment for the operation of the upper and lower seams in one well, including a single-lift pipe string, a pump lowered into the well on the pipe string to the upper formation zone, a packer dividing the production string into an overpacker zone including the upper formation zone and a subpacker zone including the zone of the lower layer, characterized in that the equipment contains an upper packer located above the packer and packaged above the zone of the upper layer, at least three circulation valves in the form of a lower, interpacker o and the upper circulation valves, controlled from the mouth, at least two heat compensators in the form of interpacker and upper heat compensators and at least three landing units in the form of lower, interpacker and upper landing nipples, and a jet pump is used as a pump with depression or production inserts, while the lower landing nipple, the lower circulation valve, the packer, the interpacker landing nipple, the interpacker heat compensator, the interpacker circulation valve, are located e in the sub-packer and over-packer zones, the upper packer, the upper landing nipple, the upper circulation valve, the upper heat compensator, and the jet pump located above the zone of the upper layer are placed in series and connected by a pipe string to the faceplate.