Device for lifting fluid submersible pump in the well casing string
(57) Abstract:The invention relates to the field of well operation and can be used to provide pumping of fluid pumped by submersible pump in the well casing string. The device includes a housing 1 with the upper and lower protrusions 2, 3, respectively, and with a by-pass channel 4 and freely mounted between the projections of the clutch housing. The clutch is made of a composite and includes rigidly interconnected by upper and lower cylindrical conical sections 6, 7. The coupling has a mechanical seal 8 relative to the upper ledge 2. The clutch is also enshrined elastic cuff 11. Anchor-retaining device, the device contains at least three clips 12 with gear unilateral cuts, which are evenly placed through slot connection 13 on the lower conical section 7 of the coupling. Between the bottom ledge 3 and clutch installed spacers in the form of a pipe 14 with the vertical slots 15, at its upper end, is placed a washer 16, which supports the spring 17, and its upper portion is located in the bore 18. The course of the spring 17 allows you to interact with the washer 16 with the lower end of the conical section 7 of the coupling. Anchor-retaining item is inami 20. The latter are placed in the slots 15 and the grooves 21. The timing slips 12 pivotally connected by rods 22 with the ring 19. In case of a short trial run of the pump 25, the liquid enters the area above the cuff 11, and under the action of the last weight of the liquid column sleeve 11 together with the clutch against the force of springs 17 are moved down in the course of braking. Slips 12 moving along the grooves 13, his teeth interlock with the walls of the casing 23, providing a secure locking device. The invention allows to extend the scope and improve the operational reliability and to simplify operation. 2 C.p. f-crystals, 1 Il. The invention relates to the field of well operation and can be used to provide pumping of fluid pumped by submersible pump in the well casing string, for example, when pipeless operation of water wells and underground leaching, as well as in other similar cases.A device for lifting fluid submersible pump in the well casing string, containing a hollow cylindrical body with upper and lower ledges, freely mounted between the projections of the housing compound coupling with the top of the bone, and the locking device, including the timing slips ( EN 2068074 C1).The disadvantages of the known device are as follows:
- inability to use packer for pipeless well operation, as it only works with the column tubing (tubing);
- low reliability of the packer due to the presence in the unit shear pins;
probably just a one-time use of the packer, as the replacement of shear pins and check valve.The aim of the present invention is to extend the scope of application by providing a lifting fluid without the use of pumping pipes, as well as improving the reliability and simplified operation.This objective is achieved in that the device for lifting fluid submersible pump in the well casing string, containing a hollow cylindrical body with upper and lower ledges, freely mounted between the projections of the housing compound coupling with the upper cylinder and the lower conical sections, elastic cuff, decompresses the pressure of the injected fluid, and the retaining device, including the timing slips, porneuo, mounted on the upper end of the washer and the ring is rigidly mounted on the inner surfaces of the plate springs, the cylindrical body is made the bypass channels, the upper cylindrical section of the coupling radial slots, toothed slips through slotted connections mounted on the tapered section of the sleeve and pivotally connected rods with ring, nozzle washer is spring-loaded relative to the clutch, a cylindrical casing grooves, and the pipe is vertical slots for placement of the plate spring, and the washer has the ability to interact with the bottom end of the coupling, and the latter is fixed against rotation relative to the cylindrical body and has an end seal relative to the upper ledge of the frame, a flexible cuff attached to the coupling, and the upper and lower cylindrical conical sections of the latter are rigidly interconnected.When this anchor-retaining device includes at least three gear slips, and each of the interlocking connection of the conical section of the clutch gear slipcase made in the form of "dovetail" with teeth clipshow have unilateral cuts.In addition, we Conducted tests of a prototype design of the claimed device has shown its high operational reliability and industrial applicability.The invention is illustrated by the drawing, which shows a General view of the device.The device comprises a hollow cylindrical housing 1 with the upper 2 and lower 3 ribs and with a by-pass channel 4 on its outer surface for flow of fluid, freely mounted between the projections of the clutch housing, which is made of a composite and includes rigidly interconnected by bolts 5 of the upper cylinder 6 and the bottom 7 conical sections. The coupling has a mechanical seal 8 relative to the upper ledge 2 of the housing 1 and fixed pin 9 located in one of the channels 4, which prevents its rotation relative to the housing 1. On the top of the cylindrical section 6 of the clutch is made of radial slots 10 to drain the fluid. The clutch is also enshrined elastic cuff 11, decompresses the pressure of the pumped fluid. Anchor-retaining device, the device contains at least three clips 12 with gear unilateral cuts, which are evenly placed through slot connection 13, each of which is made in the form of a "dovetail" on the bottom of the conical section 7 of the coupling. Between the bottom ledge 3 of the housing 1 and the clutch is installed spacers in the form of a pipe 14 with the vertical parhna the site is located in the bore 18, performed on the inner surface of the lower conical section 7 of the coupling. The course of the spring 17 allows you to interact with the washer 16 with the lower end of the conical section 7 of the coupling. Anchor-retaining device also includes a ring 19 is rigidly mounted on the inner surfaces of the plate springs 20. The latter are placed in the slots 15 of the socket 14 and the grooves 21, are made on the housing 1. The timing slips 12 pivotally connected by rods 22 with the ring 19. The plate springs 20 provide slipcam 12 installed position in the slots 21 on the descent, the locking and lifting device in the casing 23 of the borehole, i.e., in the required diametral dimension, excluding spontaneous locking device when running or climbing on the casing 23 of the well. The cable 24 from the pump 25 passes through the seal 26, the inner cavity of the housing 1 and the window 27. In the upper part of the housing 1 has a pin 28 for engagement, descent and detach the device from tripping, lifting tool, for example, rods or pipes. The presence of the check valve 29 in the pump 25 in combination with the sleeve 11, the end seal 8 and the seal 26 of the cable 24 eliminates arbitrary discharge of the liquid column of the discharge is the rise of the device, connected to the pump 25, the well is produced through trip tool and vacated capture, which should be connected to pin 28.During the descent device of the column 23, the liquid flows freely through the pump 25, the check valve 29 and the inner cavity of the housing 1. Elastic cuff 11 and the clutch is preloaded by a spring 17 in its upper position until it stops at the top of the ledge 2 of the housing 1. The timing slips 12 are located at the bottom of the conical section 7 of the coupling, is limited to the loss of rods 22 and locked in this position, the plate springs 20.After the descent device with a pump to a predetermined depth is short trial run of the pump 25 in the operation for locking the device in the column 23. When this fluid from the pump 25 through the internal cavity of the body 1 enters the area above the cuff 11, and under the action of the last weight of the liquid column sleeve 11 together with the clutch against the force of springs 17 and the friction force of the cuff 11 to column 23 and clipshow 12 in the grooves 13 are moved down in the course of braking. Thus slips 12 moving along the grooves 13, his teeth interlock with the walls of the casing 23, and efforts plate ol the about section 7 of the clutch when the last move down and thus is a reliable locking of the device in the casing 23. To prevent the flow of fluid through the channels 4 after locking the housing 1 is lowered a little tool before landing his upper lip 2 on the end seal 8. The stability of the liquid level in the column 23 by disabling the pump 25 and the transfer of weight of the liquid, together with the weight of submersible equipment, pump 25 and the whole device on the timing slips 12 ensures reliable operation of the device.Then in a known manner tool is released and the gripper from the connection with the pin 28 and made them climb out of the well. After tying the mouth of the well and connecting the current-carrying cable to the automatic station control motor 25 is switched on for continuous operation.For lifting the unit with electric pump 25 is necessary to reverse the descent to make the descent of the tool with a gripping device and connect them with the pin 28, then the tool is tension to bypass fluid from the injection zone wells in the zone of absorption. Draining occurs through the bypass channels 4 of the housing 1 and the radial slots 10 to static level. Then more tension tool needed PfP pipe 14 through the washer 16 compresses the spring 17, washer 16 abuts against the lower end of the coupling, which enables you to move the latter up and slips 12 held by rods 22 and plate springs 20 are moved along the slots 13 "dovetail" in the lower part of the conical section 7 of the coupling, thus leaving out of engagement with the wall of the column 23, ie rasshifrovka device. With the further rise timing slips 12 are located in the outer envelope of the conical section 7 of the coupling, which eliminates arbitrary stopping. Fluid is able to exit from a static level to flow through the channels 4 of the housing 1 and the slots 10 in the hole, bypassing the pump 25. Further, when the rise of the conical section 7 of the clutch is pressed by spring 17 to rest on the ledge 2 of the housing 1, blocking the channels 4 and the slots 10, and the system returns to its original position.In the event of a significant accidental release of sand during operation nagakura area may be released from the sand in a known manner flushing.Tested design of the claimed device showed (according to the results of checks on reliability and durability of an experimental batch) high technical and economic efficiency in the exploitation and industrial applicability.
FIELD: underground well repair, particularly equipment for sealing or packing boreholes or wells, namely devices for annulus separation during bottomhole zone waterproofing, hydraulic reservoir fracturing and other operations to be executed in well.
SUBSTANCE: device comprises body, anchoring unit including cone and slips, sealing member, upper and lower movable and lower fixed stops and drive. Anchoring unit is arranged on the body under sealing member. Drive is made as piston installed inside the body and provided with levers and pressing members made as racks. The racks may move in axial and radial directions. Toothed rings mating the racks are formed on outer surface of the body. Inner body surface is provided with extension to limit piston stroke. Upper body part has shear bush for drop ball receiving. Anchoring unit is located over fixed support. Slides have inclined teeth. Upper parts of the teeth are directed opposite to lower parts thereof.
EFFECT: increased efficiency.
FIELD: oil and gas industry.
SUBSTANCE: invention is related to oil and gas production industry and is intended for overlapping of intertubular space and performance of isolating works in case of wells overhaul. Drillable packer contains shaft with notches on external surface, the following components installed on shaft - combined sealing element, extrusion washers, upper and lower rupture screw-thread dies, movable upper and fixed lower supports, fixator in the form of split spring rings in annular bore of movable support. Packer shaft is equipped by left sub with calibrated annular bore and nipple in axial channel, which is rigidly connected to left sub and equipped with fitting valve in axial channel in the form of sleeve with dead bottom and radial holes covered with bushing equipped with throttle. Bushing is connected to sleeve by calibrated shear element. Bottom support is equipped with spring-loaded check valve in the form of body with plug in middle part and radial holes, elastic sealing collar at the lower end, installed with the possibility of interaction with seat in axial channel of lower support.
EFFECT: increase of intertubular space sealing reliability, and also increase of fitting tool functional resources by its multiple usage.
3 cl, 4 dwg
FIELD: oil-and-gas industry.
SUBSTANCE: parker contains a channel with sealing element, executed as a set of sleeves, and a hydraulic anchor, including a ram holder, rams and a cone, and an electrical cable, at that the hydraulic anchor has a case-piston, connected to the channel and creating a piston void together with creping its over the ram holder, connected through the channel wall hole with the channel external void, hydraulic anchor case-piston and the parker case connected with nipples over the sealing elements, inside the case-piston channel located a sickle shaped tube adjusting to its external surface, connected to the nipples inclined holes, the electrical cable goes throughout the sickle shaped tube, which cores enters the nipples inclined holes and connected to located on the nipples inclined holes ends cable connectors, with its help cable cores going through the sickle shaped tube connected to extension cables, at that the nipple connected to the channel, connected with tubing string, with the aid of which the parker installed inside the borehole with ability to of tubing string supply through nipples, the parkers channel and the hydraulic anchor case-piston medium produced form the well, at that nipples ends inclined holes and the sickle shaped tube ends mutual dislocation in one plane created because of the nipple position fixing relatively to the parkers channel and the hydraulic anchor case-piston, correspondingly with a help of a retainer nut, screwed on the parkers channel, which rotation relatively to the parkers channel limited with a stop screw, and nipples connected to the channel with captive nuts, screwed on the nipple screw till it external end meets retainer nuts.
EFFECT: parker operation reliability increase.
4 cl, 1 dwg
FIELD: oil-and-gas industry.
SUBSTANCE: well parker-anchor, containing a case, an anchor unit, consisting of a void cone and a ram, installed under a sealing element, located between a top fixed stop block and a bottom stop block, and a drive, made as a piston with pass through channel, equipped with pass though narrowing on the bottom, and from the top - with a void bar, which stiffly and axially connected with the cone from the top, stiffly fixed with the case. The piston installed inside of the movable cylinder, and the inside void between the cylinder and the piston connected with the bar void over the pistons pass through channel narrowing, at that the top stop block executed spring loader from the top and with ability of limited upwards movements, and the bottom stop block equipped with radial windows and is movable, has upwards movement ability, interaction with the cylinder at the bottom. Rams made roller shaped with longitude holes, installed in the bottom stop block windows on axis, which fixed perpendicularly to the case axis, at that the rollers longitude hole diametre is bigger then axis external diametre, and the rollers external surface serially interacts with the void bar external surfaces, the cone, the case and the wells wall during the bottom stop block movement relatively to the case. In the offered parker-roller design, which roles between the well wall and the case, achieves a reliable borehole separation in result to the tubing string weight, because of that parkering and unparkering executed with tubing string movement, which location controlled on the borehole head.
EFFECT: design simplification, operational reliability increase, manufacturing and maintenance works cast cutting due to simple and processible spare part use, their quantity decrease.
FIELD: oil and gas production.
SUBSTANCE: packer-anchor consists of housing, anchor unit made of cone and slips in a form of rollers, sealing element between the upper and lower movable supports, drive. The upper support is spring-loaded downwards by coil spring that leans on the lower bushing of protective means against foreign substances that includes upper and lower movable bushings loaded by the said spring and collar fixed between these bushings capable of radial extension. The effort necessary for maximum radial extension of the collar is less than the effort necessary for rollers movement on the cone. The possibility of upper support axial movement is limited by end surface of housing step. Method of well annular space separation consists in descending of described packer-anchor into the well, preparation of packer-anchor to installation by pressure of pumped fluid, setting of rollers into working position, preparation of sealing element for separation of well space, separation of well space with the possibility of further de-packering-de-anchoring, removing from well or movement to well other zone.
EFFECT: increase of device and method of space separation reliability, facilitation of operational service.
2 cl, 7 dwg
FIELD: oil and gas production.
SUBSTANCE: packer includes hollow shaft, sealing elements with stops mounted on the shaft, anchor unit that consists of casing with cone with slots and plates installed in them, connected to hydraulic cylinder piston via rods, the cavity of the cylinder is connected to the cavity of the shaft through radial channel and extension-type connection pipe mounted at the lower end of hollow plunger. Note that the piston is spring-loaded downwards in relation to the cylinder - to transport position and the rods are assembled consisting of upper, pin-connected to the plates, and lower, spherically-connected to the piston, parts that are interconnected via threaded connection adjusting the rod length. Sealing elements on outer surface contacting the stops can be equipped with facets, the quantity of sealing elements can exceed two and additional intermediate stops can be arranged between them, under the sealing elements there can be installed a driving washer rigidly connected to the corresponding intermediate support.
EFFECT: extension of packer functional capabilities for operation in slope-directed and horizontal areas of the wells, increase of packer reliability, simplification of packer assembly.
5 cl, 2 dwg
FIELD: oil and gas industry.
SUBSTANCE: drillable packer includes a shaft with a notch on outside surface, a sealing element, upper and lower disruptive rams, with upper and lower cones, a movable upper support and a fixed lower support, a fastener in the form of split spring rings in an annular bore of the movable support, a nipple in an axial channel of the shaft, which is connected through the left adapter to a hollow plunger of a hydraulic setting device, a fixed support with a spring-loaded shoe valve in the form of a housing with radial holes and a sealing cup installed on the seat. The nipple is equipped with a pusher, with an annular bore at a connection point, in the axial channel of which there installed is a piston with a bar and a sleeve, which is equipped with radial holes and rigidly attached to the pusher. The shoe valve is equipped with a seat, at the connection point of the housing of the shoe valve with the nut equipped with a shell resting on the spring, in the axial channel of which there is a seat on the internal annular projection and a spring-loaded ball valve is installed. A sleeve is equipped with longitudinal slots on the end and passed through the axial channel of the seata to the axial channel of the shoe valve with possibility of the end interaction with the spring-loaded ball valve. The bar is passed through an axial channel of the sleeve so that it goes beyond its end and forms together with it an annular gap hydraulically attaching the cavity of the packer to the axial channel of the pusher.
EFFECT: avoiding conditions of occurrence of a hydraulic impact.
SUBSTANCE: invention relates to devices for fixing a tubing string in a casing string and eliminating the undulatory bending of the tubing string during the production of a reservoir fluid by downhole rod pumping units. The anchor consists of a housing, a cone, dies mounted on the cone by means of a dovetail, a casing, shear pins. On the cone along the dovetail, grooves are made, in which rollers installed in a cage are movable arranged, the dies resting on the rollers with their base. The cone is fixed against movement relative to the housing by means of a collet or a spring split ring. The collet or the spring split ring with its lower end rests against a ring mounted on the shoulder of the lower housing, and with its conical projection - into the stop ring mounted on the inner shoulder of the cone.
EFFECT: simplified design and increased operation reliability.
3 cl, 1 dwg
FIELD: pump manufacture, possibly lifting stratum liquids and gas-liquid mixture from wells.
SUBSTANCE: pump includes axial stages having stator apparatus and impeller in the form of sleeve with diameter at side of inlet of impeller determined according to outer diameter of impeller, pump efficiency, number of revolution and diameter coefficient of impeller. On end surfaces of sleeve washers of wear resistant material are arranged. On lateral surface along helical line vanes are mounted with predetermined pitch. Vanes have rounded shape of inlet edges with predetermined inclination angles relative to ends of sleeve. Stator apparatus includes sleeve with shoulders on end surfaces and with vanes on lateral surface. Said vanes are mounted at predetermined spacing.
EFFECT: enhanced technological effectiveness, lowered labor consumption for making pump, improved operational reliability, increased useful life period of pump.