CN208089257U - Decentralized wellhead with chemical inlet - Google Patents

Abstract

The utility model discloses a kind of decentralized wellheads of band chemistry inlet, including production wellhead, chemistry injection well head, rolling bearing, eccentric hanger, threeway, chemical injection pipe and probe tube, sucker rod is arranged in the inside of the production wellhead, the chemistry injection import is divided into the upper well head of chemistry injection and the lower well head of the chemistry injection, the upper well head of chemistry injection is connect with the lower well head of the chemistry injection by union connector, the top of the upper well head of chemistry injection connects the chemical injection pipe and the probe tube by threeway, the periphery setting eccentric hanger between the production wellhead and the chemistry injection well head, the top of the bias hanger and production wellhead is connected by rolling bearing, the utility model improves working efficiency, avoid the sucker rod in production wellhead that eccentric wear occurs.

Description

Decentralized wellhead with chemical inlet

Technical field

The utility model is related to Petroleum Machinery Design technical fields, in particular to a kind of the inclined of band chemistry inlet Heart well head.

Background technology

Decentralized wellhead is a kind of special device of wellhead for production, is the important equipment in recovering the oil production, domestic at present Decentralized wellhead need manual rotation's bias hanger when mounted and adjust sucker rod center, working efficiency is relatively low, meanwhile, by Sucker rod center is set to shift in a variety of causes, eccentric hanger is difficult self-centering, is easy to happen pumping rod bar friction phenomenon. Especially when underground working changes, when needing to sample or needing to inject chemical agent, will disassemble oil outlet flange or Sucker rod substitute could sample, and chemical reagent could be injected at well head by connecting injection pump, and time-consuming, labour's intensity is big, work Make efficiency and safety coefficient is relatively low.

Utility model content

The utility model is intended to solve above-mentioned technical problem to a certain extent.

In view of this, the utility model provides a kind of decentralized wellhead of band chemistry inlet, band chemistry inlet Decentralized wellhead improves working efficiency, avoids the sucker rod in production wellhead that friction phenomenon occurs.

In order to solve the above-mentioned technical problem, the utility model provides a kind of decentralized wellhead of band chemistry inlet, including Production wellhead, chemistry injection well head, rolling bearing, eccentric hanger, threeway, chemical injection pipe and probe tube, the producing well Sucker rod is arranged in the inside of mouth, and the chemistry injection import is divided into chemistry and injects upper well head and the lower well head of chemistry injection, institute It states the upper well head of chemistry injection to connect by union connector with the lower well head of the chemistry injection, the top of the upper well head of chemistry injection The chemical injection pipe and the probe tube are connected by threeway, it is outer between the production wellhead and the chemistry injection well head The top of the week setting eccentric hanger, the bias hanger and production wellhead is connected by rolling bearing.

Further, the rolling bearing includes outer shroud, ball and inner ring, and multiple pockets for accommodating ball are arranged in the inner ring Hole, the outer shroud setting accommodate the circular orbit slot of ball, and the outer shroud is rotated by multiple balls along the inner ring.

Further, the outer shroud of the production wellhead and the rolling bearing is fixed, the bias hanger and the rolling The inner ring of bearing is fixed.

Further, the axis of the rolling bearing and the axis of the production wellhead are vertically arranged.

Further, the production wellhead is connected to setting with the bottom of the chemistry injection well head.

Further, the double pin ends of external setting of the production wellhead.

Further, the chemistry injection well head is connected to bypass pipe, and the end set of the bypass pipe bypasses diameter flange.

Further, the axis of the chemical injection pipe injects the axis of well head on same straight line with the chemistry.

Further, the axis of the probe tube is perpendicular to the chemistry injection well head axis.

Further, the chemical injection pipe setting for opening and closing sampling valve.

The utility model has technical effect that：Decentralized wellhead with chemical inlet injects well head by chemistry and directly takes out Oil sample and injection chemicals are taken, working efficiency is improved, eccentric hanger is overlapped with sucker rod automatically by rolling bearing, Avoid the sucker rod in production wellhead that friction phenomenon occurs.

Description of the drawings

Fig. 1 is a kind of structural schematic diagram of the decentralized wellhead of band chemistry inlet according to the present utility model.

Wherein, 1- bias hanger；2- production wellheads；3- chemistry injects well head；4- rolling bearings；5- threeways；6- chemistry Injection pipe；7- probe tubes；8- union connectors；The bis- pin ends of 12-；13- bypass pipes；14- bypasses diameter flange；15- sampling valves；21- Sucker rod；The upper well head of 31- chemistry injection；The upper well head of 32- chemistry injection；41- outer shrouds；42- balls；43- inner ring.

Specific implementation mode

The utility model is described in further detail in the following with reference to the drawings and specific embodiments, so that those skilled in the art The utility model can be better understood from and can be practiced, but illustrated embodiment is not as the restriction to the utility model.

As shown in Figure 1, a kind of decentralized wellhead of band chemistry inlet, including production wellhead 2, chemistry injection well head 3, rolling Sucker rod 21, chemistry is arranged in the inside of bearing 4, eccentric hanger 1, threeway 5, chemical injection pipe 6 and probe tube 7, production wellhead 2 Injection import 3 divides injects lower well head 32 for chemical upper well head 31 and the chemistry of injecting, and chemistry injects under upper well head 31 and chemistry injection Well head 32 is connected by union connector 8, and the top that chemistry injects upper well head 31 connects chemical injection pipe 10 and sampling by threeway 5 Pipe 11, the eccentric hanger 1 of periphery setting between production wellhead 2 and chemistry injection well head 3, eccentric hanger 1 and production wellhead 2 Top connected by rolling bearing 4.

Specific embodiment according to the present utility model, a kind of decentralized wellhead of band chemistry inlet, including production wellhead 2, Chemistry injection well head 3, rolling bearing 4, eccentric hanger 1, threeway 5, chemical injection pipe 6 and probe tube 7, production wellhead 2 it is interior Sucker rod 21 is arranged in portion, and sucker rod 21 is elongated rod piece, and the lower part of sucker rod 21 connects oil well pump, and up and down motion is taken out Oil；

Chemical injection import 3 divides injects upper well head 31 and the lower well head 32 of chemistry injection for chemistry, and chemistry injects upper well head 31 Lower well head 32 is injected with chemistry to connect by union connector 8,8 corrosion resistance of union connector is strong, injects 31 He of upper well head to chemistry Well head 32 is attached under chemistry injection, convenient disassembly；

The top of the upper well head of chemistry injection 31 connects chemical injection pipe 10 and probe tube 11 by threeway 5, production wellhead 2 and The eccentric hanger 1 of periphery setting between chemistry injection well head 3, eccentric hanger 1 and the top of production wellhead 2 pass through the axis of rolling 4 connections are held, production wellhead 2 and the outer shroud of rolling bearing 4 are fixed, and eccentric hanger 1 and the inner ring of rolling bearing 4 are fixed, eccentric Hanger 1 is rotated under the drive of rolling bearing 4, can be adapted to overlap with 21 center of sucker rod automatically, be avoided oil pumping Friction phenomenon occurs for bar 21.

As shown in Figure 1, rolling bearing 4 includes outer shroud 41, ball 42 and inner ring 43, multiple receiving balls 42 are arranged in inner ring 43 Pocket hole, outer shroud 41 setting accommodate ball 42 circular orbit slot.

Specific embodiment according to the present utility model, outer shroud 41 are rotated by multiple balls 42 along inner ring 43, multiple balls 42 are arranged in multiple pocket holes, are slided along the circular orbit slot of outer shroud 41, friction coefficient is small, transmission efficiency.

As shown in Figure 1, the axis of rolling bearing 4 and the axis of production wellhead 2 are vertically arranged.

Specific embodiment according to the present utility model, eccentric hanger 1 are rotated along production wellhead 2 by rolling bearing, are made The axis at the center of eccentric hanger 1 is overlapped with sucker rod 21, avoids sucker rod 21 that friction phenomenon occurs.

As shown in Figure 1, the external setting pair pin end 12 of production wellhead 2.

Specific embodiment according to the present utility model, double pin ends 12 are sealed production wellhead 2, avoid production wellhead 2 there is a phenomenon where gas leakage.

As shown in Figure 1, chemistry injection well head 3 is connected to bypass pipe 13, the end set bypass diameter flange 14 of bypass pipe 13.

Specific embodiment according to the present utility model, bypass pipe 13 is by being used to connect other oil production equipments.

As shown in Figure 1, the axis and chemistry of chemical injection pipe 6 inject the axis of well head 3 on same straight line, probe tube 7 axis injects 3 axis of well head perpendicular to chemistry.

Specific embodiment according to the present utility model, the axis of chemical injection pipe 6 is with the axis of chemistry injection well head 3 same On straight line, chemicals is directly entered by gravity in chemistry injection well head 3.

As shown in Figure 1, the chemical setting of injection pipe 6 for opening and closing sampling valve 15.

Specific embodiment according to the present utility model opens sampling valve 15, injects chemicals to chemical injection pipe 6, when When chemicals injection is completed, sampling valve 15 is closed.

A kind of decentralized wellhead of band chemistry inlet according to the present utility model, use principle are as follows：

The eccentric hanger 1 of periphery setting between production wellhead 2 and chemistry injection well head 3, eccentric hanger 1 and producing well The top of mouth 2 is connected by rolling bearing 4, and production wellhead 2 and the outer shroud of rolling bearing 4 are fixed, eccentric hanger 1 and the axis of rolling The inner ring for holding 4 is fixed, and eccentric hanger 1 is rotated under the drive of rolling bearing 4, can adapt to automatically in sucker rod 21 The heart overlaps, and avoids sucker rod 21 and friction phenomenon occurs.

Embodiment described above is only the preferred embodiment lifted to absolutely prove the utility model, the utility model Protection domain it is without being limited thereto.Those skilled in the art on the basis of the utility model made by equivalent substitute or change It changes, both is within the protection scope of the present invention.The scope of protection of the utility model is subject to claims.

Claims (10)

1. a kind of decentralized wellhead of band chemistry inlet, which is characterized in that including production wellhead, chemistry injection well head, the axis of rolling It holds, sucker rod, the chemistry note is arranged in eccentric hanger, threeway, chemical injection pipe and probe tube, the inside of the production wellhead Enter import and be divided into the upper well head of chemistry injection and the lower well head of the chemistry injection, the upper well head of chemistry injection is injected with the chemistry Lower well head is connected by union connector, and the top of the upper well head of chemistry injection connects the chemical injection pipe and institute by threeway Probe tube is stated, the periphery setting eccentric hanger between the production wellhead and the chemistry injection well head, the bias The top of hanger and production wellhead is connected by rolling bearing.

2. the decentralized wellhead of band chemistry inlet according to claim 1, which is characterized in that the rolling bearing includes outer Multiple pocket holes for accommodating ball are arranged in ring, ball and inner ring, the inner ring, and the outer shroud setting accommodates the circular orbit of ball Slot, the outer shroud are rotated by multiple balls along the inner ring.

3. the decentralized wellhead of band chemistry inlet according to claim 2, which is characterized in that the production wellhead with it is described The outer shroud of rolling bearing is fixed, and the inner ring of the bias hanger and the rolling bearing is fixed.

4. the decentralized wellhead of band chemistry inlet according to claim 1, which is characterized in that the axis of the rolling bearing It is vertically arranged with the axis of the production wellhead.

5. the decentralized wellhead of band chemistry inlet according to claim 1, which is characterized in that the production wellhead with it is described The bottom connection setting of chemistry injection well head.

6. the decentralized wellhead of band chemistry inlet according to claim 1, which is characterized in that the outside of the production wellhead The double pin ends of setting.

7. the decentralized wellhead of band chemistry inlet according to claim 1, which is characterized in that the chemistry injection well head connects The end set of logical bypass pipe, the bypass pipe bypasses diameter flange.

8. the decentralized wellhead of band chemistry inlet according to claim 1, which is characterized in that the axis of the chemistry injection pipe Line injects the axis of well head on same straight line with the chemistry.

9. the decentralized wellhead of band chemistry inlet according to claim 1, which is characterized in that the axis of the probe tube hangs down Directly in the chemistry injection well head axis.

10. the decentralized wellhead of band chemistry inlet according to claim 1, which is characterized in that the chemistry injection pipe is set Set for opening and closing sampling valve.