CN2553092Y

CN2553092Y - Hollow sucker rod

Info

Publication number: CN2553092Y
Application number: CN 02235509
Authority: CN
Inventors: 范振明; 李明
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-05-23
Filing date: 2002-05-23
Publication date: 2003-05-28
Anticipated expiration: 2012-05-23

Abstract

The utility model discloses a hollow sucker rod, a coaxial hollow inner rod is arranged in the cavity that a hollow sucker rod is used as an outer rod; a support flange is arranged between the inner rod and the outer rod, the flange is arranged at two ends of the inner rod; the flange is provided with an axial hole, the internal and external channels of the sucker rod can transport different fluid medium; closed circulation channels can also be formed. During oil exploitation, the heat medium is outputted to the exploitation layer through the inner layer, after high pourpoint heavy oil is heated, the heat medium is drawn back from the outer layer pipe again, thereby reducing the waste resulted by that the heat medium is directly poured into the oil layer and the pollution resulted from the crude oil.

Description

A kind of hollow rod

Technical field

The utility model relates to the oil rig in a kind of oil exploitation, refers in particular to a kind of hollow oil pumping.

Background technology

Along with the middle and later periods exploitation of the underproduction year by year of oil allowable exploitation and OW, height coagulate thick and high wax content oil to occupy ratio increasing, conventional recover the oil more and more difficult.After the eighties, begin to adopt steam soak, hot water to inject several different methods such as oil reservoir.The method is with the hollow section that links together, extend into oil reservoir thermal medium or medicine are injected oil reservoir, with the oil dilution of heating; Perhaps with the oil well heating cable oil is heated, but cost an arm and a leg, the thermal efficiency is low, and the oil pumping effect is all undesirable.And use common hollow rod to inject a large amount of heat-carrying agent mediums or medicine in oil, they mix in oil, bring certain difficulty for follow-up crude Treatment and accumulating, have also wasted valuable natural resources.

Summary of the invention

The purpose of this utility model provides a kind of heat transfer medium resource can be recycling, the hollow rod that the thermal efficiency is high.

The purpose of this utility model is achieved in that it is in the chamber of outer bar bar in the coaxial hollow to be set with the hollow sucker rod; Be provided with the pivot flange dish between interior bar and outer bar, flange is positioned at the two ends of bar; Flange is provided with axially extending bore.

Described outer bar two ends are provided with the internal and external threads joint that can match; Be provided with seal groove and sealing ring in the screw thread inboard of male connection one end, be provided with the O-ring side face in the screw thread outside of female adapter one end.

The flange at bar two ends in described is connected with interior bar threaded one end respectively, the other end is sealed and matched, and interior bar one end stretches out the measure-alike of the size of flange and other end indentation flange.

Described outer bar internal thread line joint one end is provided with the spanner square opening.

By adopting above structure, each coaxial hollow rod can connect to required length, the space isolates mutually in the bar, lower channel does not disturb mutually in the formation, thereby thermal medium is circulated in coaxial double hollow oil pumping rod not to be contacted with the external world, thermal medium be transported to the oil reservoir that needs heating from a passage after heats oil, and heat medium temperature is drawn back from another passage again after reducing simultaneously, and thermal medium obtains recycling.Use inner pipe passway to carry thermal medium separately, function of heat insulation is then played in the outer space, reduces thermal loss.

When each hollow rod joins by the joint on the outer bar, pipe also reaches in the pivot flange dish of another root in one, and the sealing ring on the pivot flange dish inner peripheral surface is managed and the outer layer channel isolating seal in two, form independently passage inside and outside the pipe in making, medium can not be ganged up.The installation that this kind structure energy is convenient and reliable.

The nipple that matches that outer hollow stem makes can connect two bars securely, adds the spanner square opening on the female adapter outer wall simultaneously, and it is convenient very naturally to install.Screw thread also plays sealing function in addition, adds the sealing ring adjacent with screw thread, can guarantee sealing effectiveness effectively.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Among Fig. 1,1. external screw thread, 2. " O " type cushion rubber, 3. seal groove, 4. screw thread, 5. flange, 6. female adapter, 7. flange, 8. O-ring side face, 9. spanner square opening, the 10. outer bar of oil pumping is managed 12. supporting disk seal grooves, 13. supporting disk through holes in 11..

The specific embodiment

As shown in Figure 1, the bar 10 inner hollow interior pipes 11 of placing outside hollow oil pumping, pumping has supporting disk between outer bar 10 and the interior pipe 11, and pivot flange dish 5,7 is positioned at the two ends of pipe 11; The flange thickness direction has a plurality of through holes 13; Have two seals groove 12 on the inner peripheral surface of the pivot flange 5 of its right-hand member, place " O " RunddichtringO in the seal groove 12, interior pipe 11 is assembled to this right-hand member pivot flange dish 5 axially about half positions, interior pipe 11 stretches out the thickness of left end pivot flange dish 7 about half pivot flange dish, so that can assemble with the opposite side pivot flange dish internal diameter of another hollow rod, pivot flange dish 5,7 is slight stationary fit with the end that cooperates of interior pipe, the other end is for being threaded, with the internal diameter of the outer bar 10 of oil pumping by being threaded.

Bar 10 right-hand members are provided with outside nut line joint 1 outside oil pumping, and the inboard of its external screw thread 4 is shaped on two seals groove 3, and " O " type cushion rubber 2 is set in the seal groove 3; Bar 10 left ends are provided with female adapter 6 outside oil pumping, and there is the O-ring side face 8 that can cooperate with seal groove 3 in screw thread 4 outsides of female adapter 6, and it cooperates with the seal groove of the male connection end of the coaxial double hollow oil pumping rod of another root.

For the ease of installing, on the outer wall of female adapter, be shaped on spanner square opening 9 with the spanner rotation.

Claims

1, a kind of hollow rod is characterized in that: be in the chamber of outer bar bar in the coaxial hollow to be set with the hollow sucker rod; Be provided with the pivot flange dish between interior bar and outer bar, flange is positioned at the two ends of bar; Flange is provided with axially extending bore.

2,1 described a kind of hollow rod as requested, it is characterized in that: described outer bar two ends are provided with the internal and external threads joint that can match; Be provided with seal groove and sealing ring in the screw thread inboard of male connection one end, be provided with the O-ring side face in the screw thread outside of female adapter one end.

3,1 or 2 described a kind of hollow rods as requested, it is characterized in that: the flange at bar two ends in described, be connected with interior bar threaded one end respectively, the other end is sealed and matched, and interior bar one end stretches out the measure-alike of the size of flange and other end indentation flange.

4,2 described a kind of hollow rods as requested, it is characterized in that: described outer bar internal thread line joint one end is provided with the spanner square opening.