Unit for dual bed operation in one chink

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil industry and can be applied in dual operation of two beds in the same well. The unit comprises a power drive, a driving element, a packer and fluid lifting lines with parallel tubing string columns lowered in the well. The unit accommodates a parallel anchor with apertures for cables and tubing string columns, eccentric guides fixed by centering clips on auxiliary branch built in the long tubing string column, bottomhole apparatuses connected to cables and arranged above and below the packer. Each guide has apertures for the cables and an aperture with the top deepened inside in the form of a funnel for the short tubing string column.

EFFECT: invention ensures coupling of the short tubing string column with the parallel anchor and prevents damage of cables.

3 dwg

 

The invention relates to the oil industry and can find application in dual operation of two layers in one well.

Known device for dual operation of reservoirs in the well, comprising a packer separating the layers in the well, the long and short columns tubing (tubing), two pump, two estuarine fittings and two are installed opposite each other ground drive rod pumps (patent RF №2346184, published. 10.02.2009 - prototype).

When the supply of installation of the anchor and the deep instruments with the cable having difficulties joining short tubing anchor, and when the shutter cable is very likely damage to the cable on the wall of the production casing.

Closest to the proposed invention the technical essence is a deep-sucker-rod pumping installation including a power drive, reverse drive body balance line lifting liquids, including cable hangers, polished rod, rod string and the plungers reciprocating pumps placed in isolated from each other pillars of tubing lowered into the well. Balance line lifting liquids contain at least one porshneva pump of various sizes, and at m is re, one pair of polished rods balance of the line through the head plate and cable hangers connected to the reversible drive body. It is made in the form of two shoulders of the balancer with two beam heads or in the form of a stepped block pulley. At least two columns of tubing joined together by clamps at intervals of their location, is not less than the wavelength of the longitudinal bending a single column tubing under the action of pressure of the efforts of the plunger (RF patent No. 2205979, published. 2003.06.10).

The application of the clamps does not eliminate the difficulties of joining short tubing with parallel anchor and helps to prevent damage to the cables.

In the proposed invention solves the problem of docking a short tubing with parallel anchor and prevent damage to the cables.

The task is solved in that setting for dual use layers in one well, including the actuator, the drive body, the manifold and line lifting liquids with parallel columns of tubing lowered into the well, according to the invention contains a parallel anchor with holes for the passage of cables and casing tubing, eccentric guides fixed centering clamps for extra nozzles, is made in the long string of tubing, deep devices connected to the cables and placed above and below the packer, each of the guides has an opening for the passage of cables and the hole with the upper part made deeper inside the funnel-shaped for the passage of a short column tubing.

The invention

When dual operation of two productive layers in one well, the most important components are the control parameters of the produced fluid (reservoir pressure, water content, factor productivity) in the process work well. Existing geophysical devices of the type Kam-T, Owl - 3-28, PH-28, lowered logging cable through the annular space, not suitable for these studies because of the design features lowered deep well pumping equipment and limited the annulus. In the case of descent dvuhlitrovy column tubing, for example, with an external diameter D=60 mm (2.0") sleeve diameter D=73,0 to 88.9 mm production casing diameter D=168 mm (6.0") with parallel anchor study lower anchors is not possible due to the limited annular space between the anchor and the production column, as the internal diameter of the production string D e/K=1530 mm to 153.7 mm, and the outer diameter of the parallel anchor D=147,3 mm, and outer diameter logging tool D the Geophysics unit=28 mm and more. The descent of these devices to the depth of the parallel anchor does not give reliable information about the work of the layers, and due to the limited annular space increases the probability of occurrence of failure due to jamming and sticking down on the cable devices.

In the proposed invention solves the problem of docking a short tubing with parallel anchor and prevent damage to the cables.

In figure 1, 2 and 3 presents the requested installation for dual use layers in one well.

Figure 1 shows the eccentric guide (top view)figure 2 - eccentric rail Assembly with additional pipe and clamp, figure 3 - installing the Assembly into the well.

Figures 1 and 2 show an eccentric guide 1 installed at a secondary nozzle 2, made of pipes tubing of the same diameter as the tubes, and fixed (fixed) with centering clamp 3. The hole in the guide under the short tubing string is made funnel-shaped (or cone) 4. The inner diameter of the guide under the tubing is, for example, 62,0 mm, which allows you to "dress" for connections of tubing 2.0". With two sides have hole is 5 in diameter, for example, D=8.0 mm under geophysical cable. The nozzles 2 on the top and bottom provided with a coupling 6 for connection with the tubes of the tubing string.

Figure 3. presents claimed was installed in the well. The installation includes a long tubing string 7, consisting of pipes and pipe 2 (see figure 2) attached to them eccentric guide 1, the packer 8, parallel anchor 9, with the pump 10, the filter 11, which placed first in-depth device 12 connected to the cable 13 passing through a sealed sub 14 and annulus 15 well 16 to the surface. Sealed sub 14 is placed in the lateral wall of the pipe long tubing 7 above the packer 8 and provides the transition of the cable 13 from the pipe long space of the casing 7 into the tube 15. Sealed sub 14 eliminates the message of the liquid pipe of the long space of the casing 7 and the annulus 15. In parallel anchor 9 pre-made holes (not shown) by analogy with the holes 5 in the eccentric guide 1 for the passage of cables.

Below parallel armature 9 and above the packer 8 second set of geophysical device 17 connected to the cable 18. The cables 13 and 18 are passed through the holes 5 in the eccentric guide 1 (see figure 1), through similar openings in the parallel anchor 9 and zakreplyaete the long tubing string 7 belts 19.

Parallel to the long tubing string 7 in the borehole 16 posted by short column tubing 20 with the pump 21. The plungers 22 and 23 of the pumps 10 and 21 are connected by rods 24 and 25 with production units (not shown) on the surface.

The device 12 is placed in the spacing effect of the lower productive formation 26, the device 17 is in the range of influence of the upper productive layer 27.

Installing collected as follows.

Miss geophysical cables 13 and 18 through the holes 5 in the eccentric guide and through similar openings in the parallel anchor 9, the cable 13 is passed through a sealed sub 14, the cables connected to the devices 12 and 17. Before you build and run in hole 16 long casing 7 with the pump 10 and the retainer 8 in the filter 11 installing the device 12. Above the packer 8 in pipe tubing 7 set sealed sub 14 skip through it by the cable 13.

Gather the long tubing string 7 and gradually lower it into the well 16. Packer 8, parallel anchor 9 and the eccentric rails 1 is fixed on a long tubing string 7. To tubing 7 using belts 13 attach the cables 13 and 18. Holes 5 and similar openings in the parallel anchor 9 is located on the opposite side from the short tubing 20 and prevent scuffing and damage to the cables 13 and 18 when the short descent of the tubing string 20.

After a long descent of the casing 7 and planting packer 8 about swagat short descent of the tubing string 20. This funnel-shaped (conical) shape of the holes 4 eccentric guide 1 allows short descent of the tubing string 20 strictly eccentric guides 1 and to prevent damage geophysical cables 13 and 18. Produce a short dock of the casing 20 with the parallel anchor 9, the descent of the pumps 10 and 21 on rods 24 and 25 in 7 long and short 20 of the casing, install the faceplate (not labeled) and pulling through geophysical cables 13 and 18, tying the wellhead 16, commissioning and commissioning of bore 16 into operation. On the long tubing string 7 select the oil from the bottom of the productive layer 26, on the short tubing string 20 from the upper productive layer 27.

The presence of the eccentric guide 1 on the long tubing string 7 allows you with a 100% success rate to produce a short dock of the casing 20 with the parallel anchor 9 and prevents damage to the geophysical cables 13 and 18.

Geophysical cables 13 and 18 fixed to the wellhead 16 and is connected to the control unit (not shown)located in the control station of the well 16. The control unit is connected via radio to the control room of the Department of oil and gas production and well data are entered automatically in real time to the control point.

After holding data and putting wells in the perfo the rotation produce periodic measurements of parameters of the produced fluid in real time without stopping well and attract additional financial and industrial resources. Owing to the timely receipt of information and the possibility of rapid repeat measurements if necessary, increase the quality of research, allowing operation of wells in the optimal mode and to increase the production of extracted liquid.

The application proposals will be docked short tubing with parallel anchor and to prevent damage to the cables.

Installation for dual use layers in one well, including the actuator, the drive body, the manifold and line lifting liquids with parallel columns of tubing lowered into the borehole, characterized in that it contains a parallel anchor with holes for the passage of cables and casing tubing, eccentric guides fixed centering clamps for extra nozzles built into the long column of tubing, in-depth devices connected to the cables and placed above and below the packer, each of the guides has an opening for the passage of cables and the hole on the top part, made deeper inside the funnel-shaped for the passage of a short column tubing.



 

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5 dwg

FIELD: oil and gas industry.

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5 cl, 3 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention refers to the device for isolation of untight hole section or non-work perforation range. The packer system comprises two packers lowered in the well on a pipe string; each packer is provided with a body, packing cuffs, a hydraulic anchor thereabove, and an anchoring unit thereunder in the form of a cone and a ram holder with rams, and a stopper fixing a position of the packers. From the top of the upper packer, there is a breaker connector of the pipe string. The upper hydraulic packer provided with a double anchor is lowered higher, while the lower, provided with a single anchor is lower than the untight section or non-work perforation range. Under or between the packers, there is shear bottom valve or a landing nipple for a demountable return valve, either one or several borehole chambers with demountable elements. Below the upper packer or its packing cuffs, there is a packer removing and circulating unit with a sliding mechanical bushing. Between the packers, there can be slip joint provided. The packer system can be additionally equipped with two duplicating mechanical support packers; one of packers is mounted from above the upper packer, and the other one from below the upper hydraulic packer. Between two upper and lower packers, there can be upper and lower hydraulic channels respectively.

EFFECT: invention provides increased reliability, efficiency and tightness of the packer systems.

4 cl, 5 dwg

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