CN201778788U - Downhole double-barreled water adding device - Google Patents

Abstract

The utility model relates to a downhole double-barreled water adding device, which comprises a water adding pipe string joint, a casing, a check valve seat, a check valve ball, a spring, a seal inner core, a leather cup compression ring, a leather cup, a locking collar, a positioning lock spring, an eccentric double-barreled water adding shoe, an O-shaped ring, a seal plug, an extension deposition cylinder, an extension oil pipe pup joint, a lifting oil pipe pup joint, and an oil pipe collar, wherein the seal inner core is arranged in the chamber of the eccentric double-barreled water adding shoe; the leather cup compression ring and the leather cup are sleeved on the outer side of the seal inner core; the water adding pipe string and the eccentric double-barreled water adding shoe are locked with the lower part of the seal inner core through the positioning lock spring; the lower end of the water adding shoe is connected with the extension deposition cylinder through screw threads; and the upper end and the lower end of the inner side outside the water adding shoe are respectively connected with the lifting oil pipe pup joint and the extension oil pipe pup joint through screw threads. The water adding device has reasonable design and reliable operation. The heavy oil double-barreled water adding oil recovery technology can be conducted smoothly by adopting the water adding device, so that the purposes of reducing consumption, saving electricity, and reducing cost of exploiting heavy oil are achieved. The water adding device adopts a no-anchoring structure, and an oil production pipe string and the water adding pipe string are sealed through locking with each other, and can realize equality and independence, as well as separated rise and fall; independent pressure test and adding water from the top of the pump do not affect pump efficiency and routine tests; further, the utility model has the benefits of convenience in construction.

Description

The two-tube water mixing device in a kind of down-hole

Technical field:

The utility model relates to a kind of downhole hardware that is used for the crude oil with high solidifying point exploitation.

Background technology:

Crude oil with high solidifying point is the higher petroleum resources of a kind of using value, this kind crude oil is because its high content of wax thereby freezing point are higher, in exploitation lifting process, the output liquid temp is constantly descended along the journey heat waste, crude oil condensation viscosity increases severely, flow resistance increases even can't flow, and must can lifting recover the oil by make temperature in wellbore be higher than the above uniform temperature of freezing point along Cheng Jiare after.At present, the oily with fixed attention heating exploitation method of the height of field by using mainly contains hollow stem cable hot line heating pour point depression and two kinds of methods of electric heating oil pipe heating viscosity reduction on the pump.The major defect of these methods is complex process, needs to be equipped with special-purpose electric equipment, and the energy consumption height, investment is big, the wherein preceding average individual well day power consumption of a kind of method 849KW.h, and individual well is invested 18.95 ten thousand yuan; The 2. average individual well day power consumption 740KW.h of method, individual well is invested 11.6 ten thousand yuan; Therefore, make height coagulate oily cost for oil production and heighten that economic benefit is had a strong impact on.

The utility model content:

The purpose of this utility model is to be to provide a kind of to be used for implementing height and to coagulate the two-tube water mixing device in down-hole that oily two-tube water mixing oil production technology reaches economize on electricity consumption reduction purpose.

The utility model is to realize like this.The two-tube water mixing device in this kind down-hole comprises insertion and is communicated with two parts, wherein, insertion portion is from top to bottom by the water mixing casing adapter, overcoat, the single current valve seat, the single current valve ball, spring, the sealing inner core, the leather cup pressure ring, leather cup, the locking box cupling, normal dog is formed, connected component is by the two-tube water mixing pipe shoe of off-centre, O type circle, sealing-plug, lengthening deposition tube, the lengthening tubing nipple, promote tubing nipple, tubing coupling is formed, its structure, assembled relation is as follows: eccentric two-tube water mixing pipe shoe is provided with the sealing inner core in the chamber, the sealing inner core outside is set with leather cup pressure ring and leather cup, the bottom is locked water mixing tubing string and eccentric two-tube water mixing pipe shoe by normal dog, be provided with O type circle and sealing-plug in the eccentric two-tube water mixing pipe shoe lower chamber, the pipe shoe lower end is connected with lengthening deposition tube with screw thread, sealing inner core upper end is connected with overcoat with screw thread, outer set upper side is connected with the water mixing casing adapter with screw thread, single current valve seat and spring are housed in the overcoat, on the outside inboard of eccentric two-tube water mixing pipe shoe, the lower end is connected with the lengthening tubing nipple with the lifting tubing nipple with screw thread respectively, promotes the tubing nipple upper end and is connected with tubing coupling with screw thread.During underground work, will connect Φ 48mm water mixing tubing string on this device insertion portion, when Φ 48mm water mixing tubing string was gone into the well, ball-and-seat can prevent effectively that the high oil that coagulates of oil well from entering the water mixing tubing string, prevents to manage interior obstruction.Leather cup pressure ring, leather cup cover are enclosed on the sealing inner core and seal, can prevent that the water in the water mixing tubing string from draining in the oil jacket annular space, sealing ring and sealing-plug are assembled in the eccentric two-tube water mixing pipe shoe seal section and behind the intact flow string it are sealed pressure testing under the operation, the back put under the water mixing tubing string in place to its pressure testing, and with sealing-plug be pressed into the lengthening deposit tank in, at this moment, the water mixing tubing string is communicated with flow string, can realize that the water mixing viscosity reduction recovers the oil.

The utility model is reasonable in design, and reliable operation utilizes it to coagulate oily two-tube water mixing oil production technology by the smooth implementation height, reaches the consumption reduction economize on electricity, reduces high purpose of coagulating oily cost of winning.This device has no anchoring structure, flow string and the interlocking of water mixing tubing string sealing, independent equality, branch time, characteristics and advantage such as mixing on independent pressure testing and the pump does not influence pump efficiency and conventionally test, and it is convenient to construct.

Description of drawings:

Accompanying drawing is a structural representation of the present utility model.

The specific embodiment: enforcement of the present utility model is illustrated below in conjunction with accompanying drawing.

As shown in the figure, the utility model is by water mixing casing adapter 1, overcoat 2, single current valve seat 3, single current valve ball 4, spring 5, sealing inner core 6, leather cup pressure ring 7, leather cup 8, locking box cupling 9, normal dog 10, the two-tube water mixing pipe shoe 11 of off-centre, O type circle 12, sealing-plug 13, lengthening deposition tube 14, lengthening tubing nipple 15, lifting tubing nipple 16, tubing coupling 17 are formed, wherein, insertion portion is provided with and can prevents effectively that the high oil that coagulates of oil well from entering single current valve ball 4, the valve seat 3 that the water mixing tubing string prevents to manage interior obstruction.The sealing of insertion portion and connected component adopts several V-type leather cups 8 or several V-type leather cups 8 to add the combination sealing of the hard sealing of machinery.Normal dog 10 adopt can the radial elastic distortion 3-6 lobe snap.Eccentric two-tube water mixing pipe shoe 11 upper surfaces for eccentric orfice be with the insertion portion sealing axle center, opening make progress draw beveled cone.

Claims (1)

1. two-tube water mixing device in down-hole, by water mixing casing adapter (1), overcoat (2), single current valve seat (3), single current valve ball (4), spring (5), sealing inner core (6), leather cup pressure ring (7), leather cup (8), locking box cupling (9), normal dog (10), eccentric two-tube water mixing pipe shoe (11), O type circle (12), sealing-plug (13), lengthening deposition tube (14), lengthening tubing nipple (15), promote tubing nipple (16), tubing coupling (17) is formed, it is characterized in that: be provided with sealing inner core (6) in the eccentric two-tube water mixing pipe shoe chamber, sealing inner core (6) outside is set with leather cup pressure ring (7) and leather cup (8), the bottom is locked water mixing tubing string (1) and eccentric two-tube water mixing pipe shoe (11) by normal dog, be provided with O type circle (12) and sealing-plug (13) in eccentric two-tube water mixing pipe shoe (11) lower chamber, the pipe shoe lower end is connected with lengthening deposition tube with screw thread, sealing inner core (6) upper end is connected with overcoat (2) with screw thread, overcoat (2) upper end is connected with water mixing casing adapter (1) with screw thread, single current valve seat (3) and spring (5) are housed in the overcoat (2), on the outside inboard of eccentric two-tube water mixing pipe shoe (11), the lower end is connected with lengthening tubing nipple (15) with lifting tubing nipple (16) with screw thread respectively, promotes tubing nipple (16) upper end and is connected with tubing coupling (17) with screw thread.

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