CN206035471U - But sleeved type layered oil exploitation gas anchor - Google Patents

Abstract

The utility model provides a but sleeved type layered oil exploitation gas anchor, distribution cylinder is last to have outer communication groove, split -flow connector is last to have the centre bore, interior communication groove, split -flow connector puts into distribution cylinder, communication groove aligns with outer communication groove in making, base welding a week of communication groove outside, make the fluid in the distribution cylinder flow from the welding seam, it overflows the passageway to form between distribution cylinder and split -flow connector, split -flow connector's the lower part screw thread and the upper portion of inner tube are connected, distribution cylinder's the lower part screw thread and the upper portion of urceolus are connected, distribution cylinder's upper portion screw thread and top connection are connected, top connection of passageway UNICOM and urceolus overflow, the lower part of center tube and the upper portion female connection of lower clutch, the upper portion external screw thread of lower clutch and the sub -unit connection of urceolus, the urceolus, the inner tube, center tube tee pipe suit together, form outer annular channel between urceolus and the inner tube, annular channel in forming between inner tube and the center tube, the lower part and the divider of lower clutch are connected, the diameter of urceolus can not exceed ordinary sheathed tube internal diameter, can be in the intraductal use of ordinary cover.

Description

A kind of sleeve type can oil production by layer gas anchor

Technical field

This utility model is the downhole tool of oilfield production, is a kind of separating liquid, the gas anchor of gas sand, specifically one Planting sleeve type can oil production by layer gas anchor.

Background technology

In oil well, some well air contents are big, when being pumped with oil well pump, into the gas-liquid ratio in oil well pump Greatly, well liquid discharge capacity is reduced, oil well output is low, and pump efficiency is low, after air content exceedes certain value, oil well pump also occurs that gas lock, makes It is not fuel-displaced into oil well.In order to reduce impact of the gas to pump work of pumping, oil field utilizes slippage effect frequently with installing under pump Simply separated with the gas anchor of Gravity Separation, prevent gas from entering in pump, although this gas anchor is had certain effect, but right It is poor in the big oil well effect of air content.Scene adopts multistage separating gas anchor sometimes, although have certain liquid gas separating effect, but Complex structure, production cost are high.On the well that above-mentioned patent all cannot be used for need oil production by layer.Chinese patent 200920031492.5 combination type gas and sand anchors, can overcome above-mentioned problem, but its eccentric discharging tube 5 and eccentric feed liquor Pipe 6 will be installed in parallel in outer tube 4, in order to ensure that eccentric discharging tube 5 and eccentric feed tube 6 have enough area of passages, outer tube 4 Diameter will be sufficiently large, therefore, this gas and sand anchor is only used for big sleeve pipe oil well, and its usable floor area is little, can meet oil field and open Sending out needs.

The content of the invention

The purpose of this utility model be to provide a kind of sleeve type can oil production by layer gas anchor, the oil well pump in pumpingh well Under, gas-liquid is separated, the gas into oil well pump is reduced, the pump efficiency of oil well pump is improved, oil well economic benefit is improved, and Overcome above-mentioned problem.

What the purpose of this utility model was realized in：Including top connection, shunt cylinder, tap, inner core, outer tube, in Heart pipe, lower contact, separator, have outer communication groove on shunt cylinder, have centre bore, interior communication groove, described center on tap The top in hole is communicated with described interior communication groove, allows the gas in described centre bore by described interior communication groove stream Go out, tap is put in shunt cylinder, make interior communication groove align with outer communication groove, the length and width of interior communication groove is less than and outreaches The length and width of groove, in the base welding one week of outer communication groove, the weld seam of welding keeps sealing, makes the fluid in shunt cylinder Can not flow out from commissure, form flow channels, the lower thread of tap and inner core between shunt cylinder and tap Top connection, the lower thread of shunt cylinder be connected with the top of outer tube, and inner core is in outer tube, the top screw thread of shunt cylinder and Top connection connects, and the upper internal threaded of described flow channels UNICOM top connection and outer tube, the bottom of central canal and lower contact connects Connect, in central canal insertion inner core, the upper external thread of lower contact is connected with the bottom of outer tube, outer tube, inner core, three pipe box of central canal It is fitted together, between outer tube and inner core, forms outer annulus access, between inner core and central canal, forms interior annulus access, lower contact Bottom is connected with separator, and the axis of described centre bore is not coaxial with the axis of shunt cylinder, central canal, makes described crossing circulate Road, outer annulus access, the runner of interior annulus access concentrate on side.

The beneficial effects of the utility model are：Outer tube, inner core, three pipe box of central canal are fitted together, flow channels, outer annular space Passage, the runner of interior annulus access concentrate on side, it is possible to reduce the flow resistance of fluid, are ensureing between outer tube and inner core In the case that interior annulus access between outer annulus access and inner core and central canal has enough area of passages, the diameter of outer tube is not The internal diameter of ordinary casing can be exceeded, can be used in ordinary casing, usable floor area of the present utility model, gassiness mixing can be expanded Liquid can be used in the well for need oil production by layer separating gas-liquid, reduce the gas into oil well pump from lower internal entrance, The pump efficiency of oil well pump is improved, oil well economic benefit is improved.

Description of the drawings

Fig. 1 is installation diagram of the present utility model.

Fig. 2 is the sectional drawing after cutting open from A-A in Fig. 1.

Specific embodiment

Embodiment of the present utility model is illustrated with reference to Fig. 1.

As shown in Figure 1, embodiment of the present utility model includes top connection 1, shunt cylinder 2, tap 4, inner core 5, outer tube 6th, central canal 8, lower contact 9, separator 10, have outer communication groove 12 on shunt cylinder 2, have centre bore 13, interior UNICOM on tap 4 Groove 11, the top of described centre bore 13 are communicated with described interior communication groove 11, make the gas in described centre bore 13 can be with Flowed out by described interior communication groove 11, tap 4 is put in shunt cylinder 2, make interior communication groove 11 align with outer communication groove 12, Length and width of the length and width of interior communication groove 11 less than outer communication groove 12, in the base welding one week of outer communication groove 12 (weld seam is between the length and width difference of interior communication groove 11 and outer communication groove 12), the weld seam of welding keeps sealing, makes shunt cylinder 2 Interior fluid can not be flowed out from commissure, form flow channels 3, under tap 4 between shunt cylinder 2 and tap 4 Portion's screw thread is connected with the top of inner core 5, and the lower thread of shunt cylinder 2 is connected with the top of outer tube 6, and inner core 5 is in outer tube 6, The top screw thread of shunt cylinder 2 is connected with top connection 1, described 3 UNICOMs of flow channels top connection 1 and outer tube 6, under central canal 8 Portion is connected with the upper internal threaded of lower contact 9, in the insertion inner core 5 of central canal 8, under the upper external thread of lower contact 9 and outer tube 6 Portion is threadedly coupled, and outer tube 6, inner core 5,8 three pipe box of central canal are fitted together, and forms outer annulus access 7 between outer tube 6 and inner core 5, Annulus access 14 in being formed between inner core 5 and central canal 8, the bottom of lower contact 9 are connected with separator 10, described centre bore 13 Axis it is not coaxial with the axis of shunt cylinder 2, central canal 8, make described flow channels 3, outer annulus access 7, interior annulus access 14 runner concentrates on side, it is possible to reduce the flow resistance of fluid.

This utility model is connected to the bottom of oil well pump with entering under oil pipe in sleeve pipe, the packing sleeve pipe of packer 10, well liquid from Packer 10, lower contact 9, the inside of central canal 8 flow upwards out rear steering, the interior annular space formed between inner core 5 and central canal 8 Flows downward in passage 14, gas fluid diversion to it is dirty when be separated and flow up, Jing centre bores 13, interior communication groove 11st, outer communication groove 12 is discharged in oil well casing, isolate the liquid stream stream after gas to the bottom of inner core 5 from outer tube 6 and inner core 5 it Between the outer annulus access 7 that formed flow upward in top connection 1, be connected oil pumping pumped thereon.Gas will not enter oil pumping In pump, it is to avoid impact of the gas to oil well pump.

Claims (1)

1. a kind of sleeve type can oil production by layer gas anchor, including top connection（1）, shunt cylinder（2）, tap（4）, inner core（5）, it is outer Cylinder（6）, central canal（8）, lower contact（9）, separator（10）, it is characterized in that：Shunt cylinder（2）On have outer communication groove（12）, shunting Joint（4）On have centre bore（13）, interior communication groove（11）, described centre bore（13）Top and described interior communication groove（11） Communicate, make described centre bore（13）Interior gas can be by described interior communication groove（11）Flow out, tap（4）It is put into Shunt cylinder（2）It is interior, make interior communication groove（11）With outer communication groove（12）Alignment, interior communication groove（11）Length and width less than outreaching Groove（12）Length and width, in outer communication groove（12）Base welding one week, the weld seam of welding keeps sealing, makes shunt cylinder （2）Interior fluid can not be flowed out from commissure, in shunt cylinder（2）With tap（4）Between form flow channels（3）, shunting Joint（4）Lower thread and inner core（5）Top connection, shunt cylinder（2）Lower thread and outer tube（6）Top connection, Inner core（5）In outer tube（6）It is interior, shunt cylinder（2）Top screw thread and top connection（1）Connection, described flow channels（3）UNICOM Top connection（1）And outer tube（6）, central canal（8）Bottom and lower contact（9）Upper internal threaded connection, central canal（8）In insertion Cylinder（5）It is interior, lower contact（9）Upper external thread and outer tube（6）Bottom connection, outer tube（6）, inner core（5）, central canal（8）Three Pipe box is fitted together, outer tube（6）With inner core（5）Between form outer annulus access（7）, inner core（5）With central canal（8）Between formed Interior annulus access（14）, lower contact（9）Bottom and separator（10）Connection, described centre bore（13）Axis and shunt cylinder （2）, central canal（8）Axis it is not coaxial, make described flow channels（3）, outer annulus access（7）, interior annulus access（14）'s Runner concentrates on side.