CN218912843U - Sucker rod washs wellhead device - Google Patents

Abstract

The utility model discloses a sucker rod wellhead cleaning device, which comprises a shell and a sucker rod, wherein the shell is a cylindrical cavity, stepped bosses are symmetrically arranged on the upper side and the lower side of the cavity, assembling threaded holes are formed in the upper step surface of the stepped bosses along an annular array, rubber core positioning holes are formed in the lower step surface of the steps along the annular array, a self-sealing rubber core is arranged at the position of the stepped bosses, and the sucker rod is inserted into the shell and is mutually attached to the self-sealing rubber core.

Description

Sucker rod washs wellhead device

Technical Field

The utility model relates to the technical field of well repair operation cleaning equipment, in particular to a sucker rod wellhead cleaning device.

Background

The sucker rod is an elongated rod piece of a sucker rod well, the upper part of the rod piece is connected with a polished rod, the lower part of the rod piece is connected with an oil pump to transmit power, the length of the single rod piece is 7.62 m or 8 m and 9.14m, the material is generally low-carbon alloy steel, the low-carbon alloy steel is subjected to thermal refining, the sucker rod is connected with a piston which is connected with an inner thread hoop in an oil pipe and extends to an underground oil layer, the oil is pumped through reciprocating motion, the length of the current oil well is generally about two kilometers, the oil field is the best, the deepest is more than three kilometers, when the sucker rod is cleaned, a steam cleaning device for the sucker rod is often needed, crude oil and wax adhered to the surface of the sucker rod fall onto the body or the ground of an operator in the process of repairing the oil field, the construction operation efficiency is seriously affected, the environment is polluted, and in the traditional process, the sucker rod is required to be transported back to a well field after being cleaned out of a wellhead, the operation is complicated, time and labor are wasted, and the research is carried out in view of the problem.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a sucker rod wellhead cleaning device, which solves the problems that crude oil and wax blocks adhered on the surface of a sucker rod fall onto an operator or the ground in the sucker rod lifting process of the conventional oilfield workover operation, so that the construction operation efficiency is seriously affected and the environment is polluted.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides a sucker rod washs wellhead device, includes casing and sucker rod, the casing is the cylinder die cavity, the ladder boss has been seted up to the bilateral symmetry about the die cavity, the assembly screw hole has been seted up along annular array to the last step face of ladder boss, the rubber core locating hole has been seted up along annular array to the lower step face of step, install from sealing the rubber core on the ladder boss position, sucker rod cartridge is in the casing and laminate each other with from sealing the rubber core, the clamp is installed to the casing upper end, the casing lower extreme is connected with down the clamp, annular air vent has been seted up down in the clamp, the jet orifice has been seted up to annular air vent lateral wall, annular air vent one side is connected with steam air intake pipe joint through the inlet channel.

The lower clamp comprises a clamp piece and a flange piece, wherein a semicircular slot hole and a semicircular air inlet channel are respectively formed in corresponding positions of the clamp piece and the flange piece.

The contact end surfaces of the clamping hoop piece and the flange piece are mutually sealed and welded.

The self-sealing rubber core is of an annular structure, chamfers are arranged at the upper end edge and the lower end edge of the inner annular surface of the self-sealing rubber core, and positioning through holes are formed in the self-sealing rubber core.

The chamfer size of the upper edge of the inner ring surface of the self-sealing rubber core is smaller than that of the lower edge.

Above-mentioned go up clamp and lower clamp all through countersunk head bolt and casing assembly connection, carry out spacing fixedly through the stock bolt respectively between casing and self-sealing rubber core and last clamp or the lower clamp.

Advantageous effects

The utility model provides a sucker rod wellhead cleaning device. The beneficial effects are as follows: the sucker rod cleaning wellhead device is used for cleaning the sucker rod on line when the sucker rod is lifted out in the minor repair operation, the wellhead device is fixed on the small four-way of the christmas tree through the lower clamp, the lower clamp adopts a split type integrated welding structure, a steam channel and a jet port are arranged in the lower clamp, the structure is simple, the processing is convenient, a steam inlet pipeline connector is connected with a steam pipeline, high-temperature steam is injected into the underground, the sucker rod is preheated for 20 minutes, during the well repair operation, the lifting hook lifts the sucker rod from the underground, the oil wax attached to the surface of the sucker rod is melted under the action of the high temperature of the steam, ninety percent of the oil wax flows back to the underground under the action of gravity after being melted, ten percent of the oil wax is attached to the surface of the sucker rod to form a layer of oil film, and the sucker rod flows back to the underground after being scraped by the rubber core when passing through the self-sealing rubber core of the wellhead device, so that the on-line cleaning of the sucker rod is completed.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a schematic view of a front view cross-section structure of the present utility model.

FIG. 3 is a schematic side sectional view of the present utility model.

Fig. 4 is a schematic diagram of an axial structure of the lower clip of the present utility model.

In the figure: 1. a housing; 2. a sucker rod; 3. a stepped boss; 4. assembling the threaded hole; 5. a rubber core positioning hole; 6. a self-sealing rubber core; 7. a clamping hoop is arranged; 8. a lower clamp; 801. a clip member; 802. a flange member; 9. an annular air guide hole; 10. an air jet; 11. a steam inlet pipe joint; 12. positioning the through hole; 13. countersunk head bolts; 14. a long rod bolt.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The components in the present case are sequentially connected by a person skilled in the art, and specific connection and operation sequence should be referred to the following working principle, and the detailed connection means thereof are known in the art, and the following working principle and process are mainly described.

Referring to fig. 1-4, the present utility model provides a sucker rod wellhead cleaning device:

examples: as can be seen from fig. 1-4 of the accompanying specification, the scheme includes a housing 1 and a sucker rod 2, wherein the housing 1 is a cylindrical cavity, stepped bosses 3 are symmetrically arranged on the upper side and the lower side of the cavity, an assembly threaded hole 4 is formed in the upper stepped surface of the stepped bosses 3 along an annular array, a rubber core positioning hole 5 is formed in the lower stepped surface of the stepped bosses along the annular array, a self-sealing rubber core 6 is mounted on the stepped boss 3, the self-sealing rubber core 6 is of an annular structure, chamfers are respectively arranged on the upper end and the lower end of an inner annular surface of the self-sealing rubber core 6, the chamfer size of the upper end of the inner annular surface of the self-sealing rubber core 6 is smaller than that of the lower end, the self-sealing rubber core 6 is provided with a positioning through hole 12, the sucker rod 2 is inserted into the housing 1 and mutually attached to the self-sealing rubber core 6, an upper clamp 7 is mounted on the upper end of the housing 1, a lower clamp 8 is connected to the lower end of the housing 1, an annular air guide hole 9 is formed in the lower clamp 8, an annular air guide hole 9 is formed in the annular clamp 9, a side wall of the annular air guide hole 9 is connected with an air inlet pipeline joint 11 through an air inlet channel, the key piece 802 is required to be pointed, the lower clamp 802 is provided with a corresponding flange 801, the corresponding flange 801 and a semicircular flange is welded with the lower flange 801 and a semicircular flange 1 through the flange 1, the flange 801, the lower clamp and the flange 801, the flange 801 and the lower clamp 1 are respectively, the flange 1 and the clamp 1 are respectively, the clamp 1, the lower clamp and the clamp 1 through the flange 1.

Working principle: before the repair work begins, the wellhead device is fixed on the small four-way of the christmas tree through the lower clamp 8, the lower clamp 8 adopts a split type integrated welding structure, the lower clamp 8 comprises a clamp part 801 and a flange part 802, semicircular slotted holes and semicircular air inlet channels are respectively formed in corresponding positions of the clamp part 801 and the flange part 802, contact end faces of the clamp part 801 and the flange part 802 are welded in a sealing mode, a steam channel and an air nozzle 10 are arranged in the lower clamp 8, the structure is simple, the machining is convenient, a steam inlet pipeline is connected with the steam inlet pipeline, high-temperature steam is injected into the well, the well is preheated for 20 minutes, during well repairing operation, a crane lifting hook lifts the sucker rod 2 from the well, oil wax attached to the surface of the sucker rod 2 is melted under the action of high temperature of the steam, ninety percent of oil wax flows back to the well under the action of gravity, ten percent of the oil wax is attached to the surface of the sucker rod 2 to form a layer of oil film, the sucker rod 2 is scraped by a rubber core when the self-sealing rubber core 6 passes through the wellhead device, the self-sealing rubber core 6 flows back to the well, the sucker rod 2 is cleaned, the self-sealing rubber core 6 is designed to be the upper layer and the self-sealing rubber core, the two-sealing rubber core structure can be fully arranged, the installation efficiency is improved, and the convenience is improved.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The term "comprising" an element defined by the term "comprising" does not exclude the presence of other identical elements in a process, method, article or apparatus that comprises the element.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a sucker rod washs wellhead device, includes casing and sucker rod, its characterized in that, the casing is the cylinder die cavity, ladder boss has been seted up to the bilateral symmetry about the die cavity, the last step face of ladder boss has seted up along annular array and has been assembled the screw hole, the rubber core locating hole has been seted up along annular array to the lower step face of step, install from sealing the rubber core on the ladder boss position, sucker rod cartridge is in the casing and laminating each other with from sealing the rubber core, the clamp is installed to the casing upper end, the casing lower extreme is connected with down the clamp, annular air vent has been seted up down in the clamp, the air jet has been seted up to annular air vent lateral wall, annular air vent one side is connected with steam air intake pipe joint through air inlet channel.

2. The sucker rod wellhead cleaning device according to claim 1, wherein the lower clamp comprises a clamp member and a flange member, and a semicircular slot hole and a semicircular air inlet channel are respectively formed in corresponding positions of the clamp member and the flange member.

3. The sucker rod cleaning wellhead assembly of claim 2 wherein the contact end surfaces of the collar member and flange member are sealed to one another.

4. The sucker rod cleaning wellhead device according to claim 1, wherein the self-sealing rubber core is of an annular structure, chamfers are arranged on the upper end edge and the lower end edge of an inner ring surface of the self-sealing rubber core, and positioning through holes are formed in the self-sealing rubber core.

5. The sucker rod cleaning wellhead assembly of claim 4 wherein the chamfer dimension of the upper edge of the inner annulus of the self-sealing rubber core is less than the chamfer dimension of the lower edge.

6. The sucker rod wellhead cleaning device according to claim 1, wherein the upper clamp and the lower clamp are assembled and connected with the shell through countersunk bolts, and limiting fixation is carried out between the shell and the self-sealing rubber core and the upper clamp or the lower clamp through the long rod bolts respectively.

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