CN209818024U - High-torque mechanical communication valve for oil field exploitation - Google Patents

Abstract

The utility model discloses an oil field is opened and is adopted high moment of torsion machinery intercommunication valve, include that the axial cup joints top connection together, presses cap, steel bushing and lower clutch, wherein, the lower extreme of top connection is passed through the pin and is connected with pressing the cap upper end, presses the lower extreme of cap and the upper end threaded connection of steel bushing, and the lower extreme of steel bushing and the upper end threaded connection of lower clutch, the inside of intercommunication valve sets up the center tube along intercommunication valve axle center direction, the center tube is followed the axis direction from last three part that down divide into, is first threaded connection section, changeover portion and end connection section respectively, wherein, first threaded connection section and top connection inner wall threaded connection, the cross section of changeover portion is non-circular, have non-circular cross section's changeover portion with form high moment of torsion power transmission mechanism after pressing the cap cooperation, end connection section is connected with the cooperation of lower clutch inner wall. The utility model relates to an oil field is opened and is adopted high moment of torsion machinery intercommunication valve and possess anti high moment of torsion function, can satisfy the demand of deep well, super deep well oil gas well production.

Description

High-torque mechanical communication valve for oil field exploitation

Technical Field

The utility model relates to an oil field exploitation instrument especially relates to a be used for deep well, ultra-deep well oil gas well oil field to open and adopt high moment of torsion machinery intercommunication valve.

Background

The production process of deep well and ultra-deep well oil gas well adopts anchoring type packer. And controlling the contradiction between the layers at the packing layer position or installing an anchoring packer protective sleeve at the top of the oil-gas layer. The damage of high pressure to the sleeve pipe in the oil gas well production process is avoided. The anchoring packer is affected by factors such as high temperature, high pressure, corrosion, scaling and the like because the anchoring packer works in the well for a long time. When the packer is replaced for workover, the packer is not easy to unseal, the anchoring device is not easy to recover, the load of the oil pipe is caused, the annular liquid weight of the oil sleeve is overlapped together, the underground pipe column load is not moved by the common workover equipment on the ground, and the major workover is often caused. The communication valve used at present is a hydraulic ball-throwing pressure-building valve. After the underground long-term work, the inner pipe column of the shaft is corroded, scaled and the like. The ball is not put in place or the surface of the ball seat is not sealed, so that the oil jacket communication is difficult to realize. During workover operations, it is important whether the downhole tool can transmit torque.

Common tools capable of transmitting torque include telescopic compensators, safety joints, etc., which are characterized by a keyway mode for transmitting torque. The bearing area is small, and the bearing is easy to deform or shear to lose the transmission function when transmitting torque.

Therefore, it is necessary to design a communicating valve which has a reasonable structure and meets the technical requirements of oil jacket communication or torque transmission during well repair operation after long-term production of deep wells and ultra-deep wells on the basis of the prior art.

SUMMERY OF THE UTILITY MODEL

The purpose of the invention is as follows: the utility model aims at solving the not enough of prior art, provide a mechanically lifting formula, rational in infrastructure, possess anti high moment of torsion function, convenient operation reliable intercommunication valve to satisfy the demand of deep well, ultra-deep well oil gas well production.

The technical scheme is as follows: in order to realize the above purpose, the utility model discloses the technical scheme who takes does:

the utility model provides an oil field is opened and is adopted high moment of torsion machinery intercommunication valve, includes, the upper clutch, pressure cap, steel bushing and the lower clutch that the axial cup jointed together, wherein, the lower extreme of upper clutch is connected with pressure cap upper end through the pin, presses the upper end threaded connection of the lower extreme of cap and steel bushing, and the lower extreme of steel bushing and the upper end threaded connection of lower clutch, and the inside of intercommunication valve sets up the center tube along intercommunication valve axle center direction, the center tube is followed the axis direction and is down divided into three part from last, is first threaded connection section, changeover portion and end connection section respectively, wherein, first threaded connection section and upper clutch inner wall threaded connection, the cross section of changeover portion is non-circular, has non-circular cross section's changeover portion with form high torque force transmission mechanism after the cooperation of pressure cap, end connection section and lower clutch inner wall cooperation are connected.

The cross section of the transition section on the central tube is hexagonal, and the press cap is provided with an inner hexagonal hole matched with the hexagonal transition section.

And a special-shaped hexagonal sealing ring is arranged between the outer wall of the lower part of the transition section and the inner wall of the steel sleeve on the central pipe, a second threaded connection section is arranged at the position, close to the special-shaped hexagonal sealing ring, of the tail connection section on the central pipe, and a compression nut is in threaded connection with the second threaded connection section to compress and fix the special-shaped hexagonal sealing ring.

4 oil sleeve communicating holes are uniformly and symmetrically arranged on the outer circle of the steel sleeve.

An O-shaped sealing ring is arranged between the outer wall of the tail connecting section on the central pipe and the inner wall of the lower connector.

Has the advantages that: the utility model provides an oil field is opened and is adopted high moment of torsion machinery intercommunication valve and prior art and compare and have following advantage:

the utility model provides an oil field is opened and is adopted high moment of torsion machinery intercommunication valve, rational in infrastructure, convenient operation, hexagonal type moment of torsion transmission mechanism, have anti high moment of torsion function, mechanical lift-up formula force intercommunication, reduce the tubular column load, avoid major workover operating cost, alleviate intensity of labour, improve oil gas well production ageing.

Description of the drawings:

FIG. 1 is a schematic structural view of a high torque mechanical communication valve for oil field exploitation of the present invention;

wherein, 1, an upper joint; 2. a pin; 3. pressing the cap; 4. a central tube; 5. steel jacket; 6. a special-shaped hexagonal sealing ring; 7. a special-shaped hexagonal sealing ring; 8. a compression nut; 9. an O-shaped sealing ring; 10. a lower joint;

FIG. 2 is a schematic structural view of a center tube;

4-1, a first threaded connection section; 4-2, transition section; 4-3 second threaded connection section;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a schematic structural view of the press cap;

fig. 5 is a sectional view B-B of fig. 4.

Detailed Description

The present invention will be further clarified by the following description with reference to the attached drawings and specific examples, which should be understood as being merely illustrative of the present invention and not limiting the scope of the present invention, and modifications of various equivalent forms of the present invention by those skilled in the art after reading the present invention, all fall within the scope defined by the appended claims of the present application.

As shown in figure 1, the high-torque mechanical communication valve for oilfield development comprises an upper connector 1, a pressing cap 3, a steel sleeve 5 and a lower connector 10 which are axially sleeved together, wherein, the lower end of the upper joint 1 is connected with the upper end of a pressing cap 3 through a pin 2, the lower end of the pressing cap 3 is in threaded connection with the upper end of a steel sleeve 5, the lower end of the steel sleeve 5 is in threaded connection with the upper end of a lower joint 10, a central pipe 4 is arranged in the communicating valve along the axial direction of the communicating valve, the central tube 4 is divided into three parts along the axial direction from top to bottom, namely a first threaded connecting section, a transition section and a tail connecting section, the first threaded connection section is in threaded connection with the inner wall of the upper joint, the cross section of the transition section is non-circular, the transition section with the non-circular cross section is matched with the press cap to form the high-torque force transmission mechanism, and the tail connection section is in matched connection with the inner wall of the lower joint 10.

As shown in FIG. 2 ~ and FIG. 3, as a preferred embodiment of the present invention, the cross section of the transition section on the central tube 4 is hexagonal, and the press cap has an internal hexagonal hole matching with the hexagonal transition section.

As the utility model discloses a technical scheme's a preferred embodiment, on the center tube installation abnormal shape hexagonal seal circle between the outer wall of the lower part of changeover portion and the steel bushing inner wall, on the center tube the end connection section is close to abnormal shape hexagonal seal circle's position is equipped with second threaded connection section, and a gland nut threaded connection will on the second threaded connection section abnormal shape hexagonal seal circle compresses tightly fixedly.

As shown in fig. 4 ~, as a preferred embodiment of the technical solution of the present invention, the steel sleeve outer circle is uniformly and symmetrically provided with 4 oil sleeve communication holes.

As the utility model discloses a technical scheme's a preferred embodiment, install O type sealing washer on the center tube between the outer wall of afterbody linkage segment and the lower clutch inner wall.

The utility model discloses the theory of operation that oil field was opened and is adopted high moment of torsion machinery intercommunication valve is:

when the packer needs to be communicated, after the pipe column is lifted up to break the pin at the upper part of the communicating valve, the central pipe moves upwards for a certain distance to expose the communicating hole on the outer sleeve, so that the oil pipe is communicated with the casing pipe, the weight of liquid acting on the packer disappears, and the next operation and construction can be safely carried out.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (5)

1. The utility model provides an oil field is opened and is adopted high moment of torsion machinery intercommunication valve which characterized in that includes, upper clutch, pressure cap, steel bushing and the lower clutch that the axial cup joints together, wherein, the lower extreme of upper clutch is connected with the upper end of pressure cap through the pin, presses the lower extreme of cap and the upper end threaded connection of steel bushing, and the lower extreme of steel bushing and the upper end threaded connection of lower clutch, and the inside of intercommunication valve sets up the center tube along intercommunication valve axle center direction, the center tube is followed the axis direction from last three part down, is first threaded connection section, changeover portion and afterbody linkage section respectively, and wherein, first threaded connection section and upper clutch inner wall threaded connection, the cross section of changeover portion is non-circular, has the changeover portion of non-circular cross section and form high torque force transmission mechanism after the cooperation of pressure cap, afterbody linkage section and lower clutch inner wall cooperation are connected.

2. The high torque mechanical communication valve for oilfield development according to claim 1, wherein the cross section of the transition section on the base pipe is hexagonal, and the press cap has an internal hexagonal hole matching with the hexagonal transition section.

3. The high-torque mechanical communication valve for oilfield development according to claim 2, wherein a special-shaped hexagonal sealing ring (6) is installed between the outer wall of the lower portion of the transition section and the inner wall of the steel sleeve on the central pipe, a second threaded connection section is arranged at a position, close to the special-shaped hexagonal sealing ring, of the tail connection section on the central pipe, and a compression nut is in threaded connection with the second threaded connection section to compress and fix the special-shaped hexagonal sealing ring.

4. The high-torque mechanical communication valve for oilfield development according to claim 1, wherein 4 oil jacket communication holes are uniformly and symmetrically arranged on the outer circle of the steel jacket.

5. The high-torque mechanical communication valve for oilfield development according to claim 1, wherein an O-ring is installed between the outer wall of the tail connecting section of the central pipe and the inner wall of the lower joint.