Rope-type sucker rod

FIELD: oil and gas industry.

SUBSTANCE: rope-type sucker rod transferring reciprocating motion and longitudinal force from the tophead to the actuator of the oil well pump consists of the rod body and head with connecting thread. At that a locked-coil rope with Z-, X- and O-wires is used as the rod body, while an attachment ensuring equal load to all rope wires is used as the rod head. Besides, the rope-type sucker rod is designed to transfer reciprocating motion from the tophead to the actuator of the oil well pump, at that attachments are equipped with a knot preventing rope turning in the attachment.

EFFECT: improvement of operational efficiency for rope-type sucker rods during operation of oil directional wells and oil wells with offshoots as well as during production of high-viscous oil.

5 cl, 7 dwg

 

The invention relates to the pumping rods used in installations for the production of fluids from wells sucker rod pumps and sucker rod screw pumps, and can be used for extraction of oil from oil deviated wells, wells and sidetracks, and also in the extraction of high-viscosity oils.

As a counterpart, the authors adopted the pump rod, which transmits the reciprocating motion and the longitudinal force from the ground Stagonospora drive to a working body oil well pump, comprising an all-metal body of the rod and the head of the jib connection thread (GOST 13877-96 sucker Rods and couplings rod. Technical conditions).

The disadvantages of this pump rod are:

low operational reliability of the rods, due to the fact that the column rods in place an intensive set of curvature moves inside of the production string, which will lead to proterm casing and premature wear and breakage of the rods;

- frequent breakage of the rods, due to the large stresses that occur in the device due to the reciprocating motion of the column bars.

While the prior art sealing rope pump rod to connect the end of the rope with the plunger rod of the pump, consisting of building the sa, two conical bushings, clamping nut, V-liners and steel wedges serving to seal the end of the rope (Ivanov V.N., Puzanov O.V., Chestnut B.C., Dahourou AV "Borehole pump installation with cable rods". Improvement of techniques and technologies of oil production in NGDU "Pokachevneft". M: "Oil and gas", 1993, pp. 80-107).

The disadvantages of this sealing rope pump rod are:

- low grip of the rope, due to the possible output of steel wedges from the clamped end of the rope under cyclic loads;

- the complexity of the lifting cable bar when jamming of the plunger rod of the pump;

low operational reliability rod pumping installations, due to the inability to transfer rotational motion to the plunger rod of the pump or rotor screw pump;

- frequent breakage of the rods, due to the twisting of the rope in the capture.

The closest device, taken by the authors as a prototype, is the cable of the pump rod, which transmits the reciprocating motion and the longitudinal force from the ground Stagonospora drive to a working body of the downhole sucker rod pump, consisting of a rope that is attached on one side to polerowanie stem, and on the other to grip the rope plug-in pump (Ivanov V.N. Questions ek the exploitation of marginal wells mechanized // Engineering practice, No. 7, 2010, p.4-15).

The disadvantages of this pump rod are:

low operational reliability of the rods, due to the design of the rope, causing premature wear and breakage of the rods;

- low grip of the rope, due to uneven loading of all wire rope;

- frequent breakage of the rods, due to the twisting of the rope in the capture.

The technical result of the invention is to improve the efficiency of the cable rods during operation of oil directional wells and oil wells and sidetracks, and also in the extraction of high-viscosity oils.

The technical result is achieved by the fact that the cable of the pump rod, which transmits the reciprocating motion and the longitudinal force from the surface of the actuator to the working body of the downhole sucker rod pump, consists of a rod body and head rod with thread. Thus, according to the invention, as the body of the rod is used rope enclosed design with Z, X and O-shaped wires, and as head of the rod is terminated, providing uniform loading of all wire rope. In addition, at the end of the injection rod is threaded for connection with a pump, polished rod or column bars.

In addition, the cable of the pump rod may be you who Olney with the ability to transfer rotational motion from the surface of the actuator to the working body of the downhole pump, when this seal is further provided with a node, preventing the twisting of the rope in the termination.

In addition, the sealing rope pump rod may include a housing, first and second tapered sleeve, wedge inserts, clamping nut which is screwed in the upper part of the housing, with the end of the rope located in the sealing inserted steel wedges, while the wedge inserts are located between the first and second tapered sleeves and at the bottom of the housing, there is an additional sleeve with internal thread, with additional nut screw lock nut, designed to prevent the steel wedges from the end of the rope, in addition, the end of the rope below the V-liners made with a bandage to prevent unwinding and raspushenny wire rope.

In addition, in the housing at the location of the second tapered sleeve can be made of the grooves, and the second tapered sleeve - outer slots included in engagement with the grooves in the body and perceiving torque, while the conical surface of the bushing has deep grooves that prevent the twisting of the rope in the conical sleeve.

In addition, the sealing rope pump rod may include a housing, first and second tapered sleeve, V-liners at the end of the rope located in the sealing, arise the Lena steel wedges, in the upper part of the body has a thrust ring, which covers the rope and secured in the casing shear screws, while the wedge inserts are located between the first and second tapered sleeves and at the bottom of the housing, there is an additional sleeve with internal thread, in addition, an additional nut screw lock nut, designed to prevent the steel wedges from the end of the rope, and the end of the rope below the V-liners made with a bandage to prevent unwinding and raspushenny wire rope.

Figure 1 shows a General view of the cable of the pump rod, figure 2 - cross section a-a of a rod body, figure 3 - cable sucker rod for transmitting rotational motion, figure 4 shows a first variant of the sealing rope pump rod, 5 is a second variant of the sealing rope pump rod, Fig.6 and Fig.7 - embodiment of sealing the cable rod, preventing the twisting of the rope.

Rope pump rod consists of a rope 1 closed structures with Z ' 4, X ' 5 and O-shaped wires and fittings 2 provides uniform loading of all wire rope. At the end of the fittings there is a thread 3 for connection with a pump, polished rod or conventional column rods.

When using rope to send BP stilnovo movement from the surface of the actuator to the working body of the downhole pump seal 2 is provided with node 6, preventing the twisting of the rope in the termination.

The length of the rope 1 can be different, rope pump rod can only be installed in place of an intensive set of curvature of the borehole (in the place of transition into a lateral wellbore), and can connect the polished rod with the plunger rod of the pump or in the case of cable rods for transmitting rotational motion from the screw rod screw pump.

Fit the rope to the casing pipe in the bend of the well occurs at the bigger surface than it was in the case of conventional rods. Large surface interaction rope with a column tubing, respectively, provides a more uniform wear and rope, and the pipe string.

In the operation of directional wells and wells with sidetracks cable sucker rod significantly reduces the likelihood of breakage of the rods, while increasing the efficiency of operation of the well.

Z, X and O-shaped wire provide high durability for closed structures rope compared with the conventional manufacture of rope. Sealing performed on the ends of the rope, provides uniform loading of all wire rope. And sealing with node, preventing the twisting of the rope in the embedding, allows you to transfer rotational movement is from their ground drive to a working body of the downhole pump.

In the first embodiment (figure 4) sealing rope pump rod consists of a housing 13, in the upper part of which is equipped with clamping nut 17. Inside the housing 13 is installed first tapered sleeve 8 with wedge inserts 9 serving to hold the rope 1. Below the first tapered sleeve 8 installed a second tapered sleeve 15, in which using steel wedges 12 sealed end of the rope 1. The bandage 10 is used to prevent premature unwinding and raspushenny wire rope 1. In the lower part of the body has a sleeve 14 with internal thread, into which is screwed a lock nut 11. Sleeve 14 also serves to connect the seal with the plunger rod of the pump.

Sealing rope pump rod on the second version of the run (figure 5) differs from the seal in the first embodiment perform the fact that in the upper part of the housing 13 instead of the clamping nut 17 is installed thrust ring 18 fixed to the casing shear screws 19.

Sealing rope pump rod by the third variant of execution (Fig.6 and 7) differs from the sealing by the first option run that to avoid turning the second tapered sleeve 15 in the housing 13 is made of the grooves 20. However, the second tapered sleeve 15 which is closed up by the end of the rope 1 has external splines 21 included in engagement with the grooves 20 in which abuse 13 and perceiving torque. To prevent twisting of the rope in the conical sleeve conical surface of the bushing is recessed grooves 22, in which at raspisanie the end of the rope includes a wire.

Sealing rope pump rod works as follows. On the cut end of the rope 1 with the brace 10 is worn clamping nut 17, the first tapered sleeve 8 and the second tapered sleeve 15. The end of the rope 1 is closed up in the second tapered sleeve 15 with steel wedges 12, which is driven into the gaps between the wires at the end of the rope. In a tapered sleeve 8 is inserted wedge inserts 9. Enshrined in the first and second tapered bushings 8 and 15 the end of the rope is inserted into the housing 13, while the clamping nut 17 is screwed into the upper part of the housing 13. In the lower part of the housing 13 is screwed sleeve 14, into which is screwed a lock nut 11. When the loading of the rope 1 second tapered sleeve 15 presses on the wedge inserts 9, which, moving in the first tapered sleeve 8, compresses the body of the rope. Thus holding it in place. The first tapered sleeve 8 is held in the housing 13 of the clamping nut 17. Lock nut 11 prevents velezinee steel wedges 12 of fluff in the second tapered sleeve 15 end of the rope 1.

The second embodiment of the sealing rope pump rod differs from the first variant sealing rope is OI the pump rod, in the upper housing 13 instead of the clamping nut 17 is installed retaining ring 18 fixed in the housing 13 shear screws 19. This design allows for the free end of the rope when the jamming of the plunger rod of the pump, when carrying out lifting operations.

A third option sealing rope pump rod differs from the first variant sealing rope pump rod so that the lower housing 13 are grooves 20, and the second tapered sleeve 15 has slots 21 that are included in engagement with the grooves 20, which excludes the possibility of rotation of the second tapered sleeve 15 in the housing 13. To prevent rotation of the rope in the second tapered sleeve 15 of its conical surface has a recessed grooves 22, which includes a separate wire raspisanie the end of the rope to a steel wedges 12.

It should be understood that after consideration by the expert describes an example implementation of the cable of the pump rod and options for sealing the cable rod and accompanying drawings, it will be obvious other changes, modifications and implementations of the claimed invention. Therefore, all such changes, modifications, and embodiments, as well as other applications that do not have differences with the essence of the present invention, should be considered protected by the present invention in the scope of the attached claims.

1. Rope pump rod, which transmits the reciprocating motion and the longitudinal force from the surface of the actuator to the working body oil well pump, comprising of a rod body and head rod with thread, characterized in that as the body of the rod is used rope enclosed design with Z, X and O-shaped wires, and as head of the rod is terminated, providing uniform loading of all wires of the rope, at the end of the injection rod is threaded for connection with a pump, polished rod or column bars.

2. Cable sucker rod according to claim 1, characterized in that it is arranged to transfer rotational motion from the surface of the actuator to the working body of the downhole pump, and the seal is further provided with a node, preventing the twisting of the rope in the termination.

3. Cable sucker rod according to claims 1 and 2, characterized in that the sealing rope pump rod includes a housing, first and second tapered sleeve, wedge inserts, clamping nut which is screwed in the upper part of the housing, with the end of the rope located in the sealing inserted steel wedges, while the wedge inserts are located between the first and second tapered sleeves and at the bottom of the housing, there is an additional sleeve with GNC is Rennie thread, in additional nut screw lock nut, designed to prevent the steel wedges from the end of the rope, in addition, the end of the rope below the V-liners made with a bandage to prevent unwinding and raspushenny wire rope.

4. Cable sucker rod according to claim 3, characterized in that in the housing at the location of the second conical sleeves are made grooves, and the second tapered sleeve is made outside the slots included in engagement with the grooves in the body and perceiving torque, while the conical surface of the bushing has deep grooves that prevent the twisting of the rope in the conical sleeve.

5. Cable sucker rod according to claims 1 and 2, characterized in that the sealing rope pump rod includes a housing, first and second tapered sleeve, V-liners at the end of the rope located in the sealing inserted steel wedges in the upper part of the body has a thrust ring, which covers the rope and secured in the casing shear screws, while the wedge inserts are located between the first and second tapered sleeves and at the bottom of the housing, there is an additional sleeve with internal thread, in addition, an additional nut screw lock nut, designed to prevent one hundred is lnyh wedges from the end of the rope, and the end of the rope below the V-liners made with a bandage to prevent unwinding and raspushenny wire rope.



 

Same patents:

FIELD: engines and pumps.

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Pumping unit // 2506457

FIELD: engines and pumps.

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Borehole pump unit // 2506456

FIELD: engines and pumps.

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1 cl, 4 dwg

Pumping unit // 2506455

FIELD: engines and pumps.

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EFFECT: better operating performances, decreased weight and overall dimensions.

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Pump plant // 2506454

FIELD: engines and pumps.

SUBSTANCE: invention relates to pump engineering and can be used in borehole pumps designed to extract oil, water and other fluids from wells. Solid-state filler top end is secured to lifter while bottom end is secured to lower end of the rod reciprocating at filler up-and-down displacement.

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3 dwg

FIELD: oil and gas industry.

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1 dwg

FIELD: oil and gas industry.

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Borehole pump unit // 2499158

FIELD: engines and pumps.

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FIELD: engines and pumps.

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4 dwg

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2 cl, 6 dwg

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SUBSTANCE: drill pipe includes a polymer basic structure formed of bismaleimide polymer reinforced with fibres; and a hydrophobic coating including a maleimide complex and chemically connected to polymer basic structure. The coating forms a covalent link with polymer basic structure. A drill pipe erection method involves erection of the basic structure of the drill pipe from polymer material; production of hydrophobic coating; and creation of covalent chemical link between the coating and the basic structure. The coating for application onto the drill pipe is made of many layers, at least one of which is made from the material containing a chemical reagent chosen for a reaction in presence of borehole fluid media that have destructive nature in relation to polymer material.

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30 cl, 10 dwg

FIELD: oil and gas industry.

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EFFECT: high leaktightness at impact of significant mechanical loads, wear resistance at multiple screwing and unscrewing and operation.

22 cl, 1 ex, 3 dwg

FIELD: oil and gas industry.

SUBSTANCE: method includes coaxial placement of inner tube with insulation, gas absorbers and centring skids in outer tube. Outer tube is equipped with fluid-tight valve that provides vacuum 10-4-10-3 mm Hg in tubular annulus. Outer and inner tubes are connected through steel linings by means of their welding to pipes by vacuum-tight seams. To outer tube linings are welded at the point of male screw placements at ends within area under the section from the first turn till base plane of thread. Thermal treatment of vacuum-tight seams provides improvement of their plasticity. Heating of inner and outer tube is made stage by stage up to final temperature of 350-450C. At each stage of heating in tubular annulus vacuum of 10-4-10-3 mm Hg is created. Male screws are made at the ends of outer tube after mechanical treatment of vacuum-tight seams.

EFFECT: reducing heat losses at heat carrier passage through tube string, increasing operational reliability of string and efficiency of string section assembly.

2 cl, 2 dwg

FIELD: oil-and-gas industry.

SUBSTANCE: spring centraliser to be automatically locked at casing column consists of centering plates and two seamless rings. Ends of said seamless rings are jointed by weld seam. Note here that lower ring has special inclined two-six pockets (depending upon centraliser size). Said inclined pockets accommodate two forged rolls coupled by torsion spring locked by retainer in transport position. Centraliser locking in rolls displacement by the spring in wedge pocket after removal of retainer is effected by the principle of overrunning coupling. Wedge pocket is formed by centraliser ring and casing column. One roll lock centraliser against downward displacement while another one inhibits upward displacement.

EFFECT: perfected design.

2 dwg

FIELD: oil and gas industry.

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EFFECT: invention allows increasing service life of downwhole equipment, increasing technological effectiveness and quality of application processes, increasing safety and reliability of the equipment.

Drill rod // 2494219

FIELD: mining.

SUBSTANCE: drill rod comprises a body connected with a nipple and a coupling and a protective jacket with an alignment ring. The body of the drill rod is made with a support collar on the outer surface. The protective jacket is made in the form of a sleeve with a hollow bottom. The jacket is connected with the alignment ring by means of thread. At the same time between the sleeve bottom and the support collar of the body there is an elastic element. The elastic element is made in the form of a cylinder from elastic material.

EFFECT: increased efficiency of drilling works, increased service life of a drilling tool and equipment.

2 cl, 1 dwg

FIELD: mining.

SUBSTANCE: retaining device (13) inserted into a central channel of a drilling string component. The channel has the first diameter on at least a part of the central section of the drilling string component, and the second diameter near the ends of the drilling string component. The second diameter is less than the first diameter. The retaining device (13) comprises a lengthy body (14), forming at least partially a jacket for a transfer line. The lengthy body (14) has transverse dimensions less than the second diameter. Multiple arc elements (15) are arranged along the lengthy body (14). Arc elements are separate from the lengthy body and are attached to it.

EFFECT: arc elements are elastically bending for provision of their displacement through the second diameter and have the largest chord that is more than the first diameter in free condition for creation of an opportunity of expansion in the first diameter after stretching via the second diameter.

3 cl, 9 dwg

FIELD: oil extractive industry.

SUBSTANCE: device has inner and outer pipes, placed coaxially with forming of ring-shaped space between them. Ring-shaped space is pressurized by vacuum seams, thermo-isolation is placed therein and vacuum is formed, on both sides of outer pipe thread is made, on one end thereof sleeve is screwed with isolating bushing. Vacuum seams are made at even spaces from ends of outer pipe, calculated from formula L=K·β, where L - distance between vacuum seam and end of outer pipe, mm; K - number of predicted maintenances of threads of thermo-isolated pipe; β - value of shortening of thermo-isolated pipe after single thread maintenance, mm. Also described is another variant of thermo-isolated pipe, wherein vacuum seams are made at different spaces from ends of outer pipe. Distance on side of sleeve is calculated from formula: LM=KM·β, where LM - distance between vacuum seam and end of sleeve end of outer pipe, mm, KM - number of predicted maintenances of thread of sleeve end of thermo-isolated pipe; β - value of shortening of thermo-isolated pipe after single thread maintenance, mm; and on nipple side space is calculated from formula: LH=KH·β, where LH - distance between vacuum seam and end of nipple end of outer pipe, mm; KH - amount of predicted maintenances of thread of nipple end of thermo-isolated pipe, while KM<KH.

EFFECT: higher efficiency.

2 cl, 1 dwg

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