(57) Abstract:The invention relates to the drilling technique, namely to the amplifying devices for hydraulic shock mechanisms used to eliminate sticking, simplifies the design and increases the reliability of the device. Amplifier device consists of a body, in the cavity of which is placed a rod connected splined connection with the case. On the outer surface of the stem is made from the upper, middle and lower grooves. On the inner surface of the case, there are three grooves - the top, middle and bottom. The grooves form a camera. The upper and lower pistons mounted on the rod with the possibility of a limited axial movement. The stroke of each piston relative to the rod equal during each of the pistons relative to the housing. When the tension of the drill or it is compacted in the same chamber formed by the secondary grooves, a compression oil and accumulation of potential energy as when you blow in the direction of bottom up and top down. The invention allows to simplify the design, to perform the device is compact and reliable in operation. 1 Il. The invention relates to the drilling technique, namely to the amplifying device is inoe device, includes housing, shaft, accommodated in the housing with the possibility of joint rotation and axial movement, a piston accommodated in the housing and fastened to a rod and sealed oil chamber formed by the housing, the rod and piston .A disadvantage of the known design is the low efficiency in the elimination of sticking due to the inability to amplify the shock GUM and "top-down" and "bottom-up".Known amplification unit comprising a housing, a rod placed in the enclosure with the possibility of joint rotation and axial movement, the upper and lower pistons are accommodated in the housing and mounted on the rod, and a sealed oil chamber formed by the housing, the rod and the upper and lower pistons .The disadvantage of an amplifying device design is the complexity and lack of reliability of its work. These deficiencies are determined by the fact that the device has two (upper and lower) work of compression chamber oil, and a third, intermediate chamber located between the working chambers. The height of each working chamber is determined by the compression ratio of the oil, allowing to obtain the necessary shock to HOM e, and the height Prohm is cooking, and the reliability of the device.An object of the invention is to simplify the design and increase the reliability of the device.The objective of the invention is achieved in that in the known amplifier device that includes a housing, a rod placed in the enclosure with the possibility of joint rotation and axial movement, the upper and lower pistons are accommodated in the housing and mounted on the rod, and a sealed oil chamber formed by the piston rod, a housing, upper and lower pistons, the upper and lower pistons mounted on the rod with the possibility of a limited axial movement, the stroke of each piston relative to the rod equal during each of the pistons relative to the housing.The proposed implementation of the device allows you to create only one working chamber of the compression of the oil located in the housing between the upper and lower pistons. One working chamber provides an amplifying device to attack and "bottom-up" and "down".The upper and lower oil chambers are small and acquire the auxiliary function of storing oil for lubricating the sealing cuff device. The total length of all cells is reduced, which simplifies the manufacture of the device is ez device.Amplifying device GUM and comprises a cylindrical housing 1, in the cavity of which is placed a rod 2 with the possibility of joint with the body rotation and axial movement by means of the spline 3. The upper end of the rod is threaded for connection with the drill string and the lower end of the housing is threaded for connection with the rod (spindle) GUM (not shown).On the outer surface of the rod 2 made the top 4, medium 5 and the bottom 6 of the groove, and the inner surface of the housing or three grooves: top 7 average 8 and bottom 9.The surface of the grooves 4 and 7 form an upper chamber 10, the surface of the grooves 6 and 9 form a lower chamber 11 and the surface of the secondary grooves 5 and 8 - the average working chamber 12. All cells are filled with a special lubricating oil through holes in the enclosure, plugged tubes (not labeled). Cameras 10 and 11 are sealed by the sealing cuff 13. In the chamber 12 is movable relative to the shaft 2 and the housing 1 is placed pistons: the top 14 and bottom 15. Restrains axial movement of the pistons are the ends of the grooves 4, 6, 7, and 9.Amplifying device operates as follows.In the borehole during drilling privatepage interval in the Noi, and the lower end of the housing 1 with the stem (spindle) GUM and. Between the amplifying device and GUM ohms and above the amplifying device may be equipped with a set of drill pipes UTL concentration drums efforts.Upon the occurrence and stuck, for example, rock cutting tool or downhole motor performs the following operations.For impact drill string in the direction of the bottom-up lifting device of the rig (winch) is produced by the tension of the drill. When the rod 2 together with the lower piston 15 is moved upward relative to the housing 1, compressing the oil in the working chamber 12. When this oil accumulates potential energy. When compressed oil to the calculated value (controlled by the tension force to the drill), the tension of the column stop (brake winch). At this time, the rod GUM and under the influence of tension force amplifying device starts working stroke up to make GUM Ohm punch "bottom-up". Potential energy is compressed in the working chamber 12 of the oil affects the upper piston 14, telling the body 1 and connected with the rod GUM and additional acceleration. Additional speed DV is Alanna pipes above amplifying device is stationary, i.e., the upward movement of the column is extinguished in the amplifying device. The resulting energy impact on tack column is significantly greater than when using only GUM and without amplifying device.For impact in the direction of "top-down" produce the above-described operations in reverse order.Instead of tension to the drill produce compression. When this compression oil is also in the chamber 12. Camera 10 and 11 to the main technological process is not involved, and their role is placing a small amount of oil for lubrication of the sealing elements. That is, when the tension of the column or compression of the working oil chamber 12 and one works the oil in it is always in compression, and at the same time is the zero point motion of the upper part of the drill pipe string.Thus, the compression of the oil and the accumulation of potential energy occurs in one chamber, and when the blow in the direction of bottom-up and top-down, allowing the device is compact, small in length, reliable.The advantage of the proposed technical solution in comparison with the known compactness is directional as "bottom-up", and "top-down", which increases the reliability of the device.Sources of informatsii:
1. The shared directory 1994-95 firm "Houston, engineers, INC.", "Drilling and fishing tools - Drilling accelerator "Magnum", S. 4.2. General catalogue 1994 - 95, the company Husten engineers, INC., "Drilling and fishing tools. Hydraulic accelerator double action, S. 4 (prototype). An amplifier unit comprising a housing, a rod placed in the enclosure with the possibility of joint rotation and axial movement, the upper and lower pistons are accommodated in the housing and mounted on the rod, and a sealed oil chamber formed by drillings in the housing and the rod, the upper and lower pistons, characterized in that the upper and lower pistons mounted on the rod with the possibility of a limited axial movement, the stroke of each piston relative to the rod equal during each of the pistons relative to the housing.
FIELD: oil production industry, particularly for underground well repair to release stuck tool.
SUBSTANCE: device comprises cylinder having bored portion, cylinder, piston connected to traction and compensating rods and sealed with gaskets. Device also has bush with outer flat installed over the piston on compensating rod. The bush and piston end define annular gap with slot-like channel formed in bottom thereof. The device also has valve unit with shutoff member arranged in the annular gap and made as O-ring of elastomeric material. The shutoff member closes liquid flow directed from cavity located above the piston to cavity under the piston. The piston is spaced from the cylinder. Channel, which communicate cylinder cavities divided with piston, is made as annular space between compensating rod and piston and may be connected with slot-like channel.
EFFECT: simplified structure and increased reliability.
FIELD: oil and gas well drilling and overhaul repair, particularly to remove tubing and drilling strings, packers and other equipment stuck in cased wells.
SUBSTANCE: hydraulic jack connected to fishing string of tubing or drilling pipes to be lowered in well comprises hydraulic power cylinders, hydraulic anchor, shaft including facetted rod in nipple having mating profile and connected to the body. Discharge valve is installed over power cylinders so that the valve may cooperate with upper shaft end. Upper shaft end is provided with telescopic pusher. The shaft is hollow along the full shaft length. Facetted rod is connected to sub having seat for check valve ball receiving and flushing pipe. Discharge valve is made as spring-loaded piston with sealing collar. Telescopic pusher consists of guiding bush and sliding collet.
EFFECT: increased efficiency and reliability.
2 cl, 4 dwg
FIELD: drilling equipment, particularly to prevent drilling tool sticking in well.
SUBSTANCE: hydromechanic jar comprises hollow body with inner and outer axial anvils and hollow rod with inner striker installed in the body and adapted to perform axial movement. The inner striker is prevented from rotation with respect to the body. Upper sub with outer striker, piston, thrust with hollow stem and separating piston slidably installed on the hollow stem, as well as movable and fixed connector sealants are arranged on the hollow rod. Lower part of the hollow body is made as annular cylinder with two working borings having different diameters and adapted for periodical body aligning with piston. Lower and upper hollow body parts are filled with liquid lubricant. Unit, which excites circular and radial vibration, is fixedly connected to the hollow body and made as multilobe gerotor mechanism having inner helical engagement means. Unit includes stator fixedly fastened to body, hollow rotor with through axial channel arranged inside the stator and performing off-center rotation inside it, axial support for hollow rotor, free fall ball or plug adapted to close axial rotor channel, as well as connection and lower subs. Radial strikers adapted to cooperate with annular anvils are formed on hollow rotor ends.
EFFECT: increased reliability and service life.
3 cl, 10 dwg
FIELD: oil and gas industry, particularly for freeing stuck downhole equipment.
SUBSTANCE: device comprises at least two hydraulic power cylinders, hydraulic anchor, overflow circulation valve having body connected to anchor body by means of shear pins and hollow stem connected to fishing string. Hydraulic separators having floating gaskets are installed between hydraulic power cylinders, as well as between anchor and hydraulic power cylinder. One hydraulic power cylinder comprises spring-loaded piston and consists of two cylinders provided with threads. Pistons of all hydraulic power cylinders have annular sealing means and annular groove for lubricant receiving. Orifices, which communicate hollow stem interior with hydraulic power cylinder and anchor interiors, are created in front of each hydraulic power cylinder and hydraulic anchor inside hollow stem. Orifices located in front of hydraulic power cylinders have diameters less than that of orifices formed in front of hydraulic anchors. Lower stem part is provided with seat for free-falling sealing ball receiving and connecting tread for fishing tool connection. Lower stem part is connected to valve body.
EFFECT: simplified structure along with technical capability retention.
FIELD: drilling equipment, possible use for freeing drilling column if it is stuck in the well.
SUBSTANCE: hydraulic catcher includes tubular body and hollow spindle, connected together without possible rotation. Upper and lower stopping collars are formed on spindle, between which a ring-shaped piston is mounted. Internal surface of body is made in form of cylindrical surface with a band of extended diameter for interaction with piston. Between body and spindle, seals of moving and immoveable connections are mounted, and also forcing and damping chambers are formed, filled with working liquid. Buffer hollow is formed in the body on the side of damping chamber. Piston ring is mounted in damping chamber with possible sliding, isolating damping chamber from buffer hollow. Between body and spindle, throttling channel is formed and a caging device is contained, and also a metering device, letting through a limited volume of working liquid during movement in throttling channel. Caging device is made in form of overflow bushing, positioned inside the piston, and packing bushing, positioned on the side of damping hollow. Metering device is made in form of at least one throttling groove on the end of piston between ends of piston and packing bushing in contact with each other. Packing bushing forms a circular running channel together with the body. Overflow bushing contains external circular collar in forcing chamber. Piston contains internal circular collar on the side of damping chamber. Overflow bushing in middle part is made with longitudinal slits. Drive of piston from the end of packing bushing, contacting the overflow bushing to external circular collar of overflow bushing exceeds distance from the end of overflow bushing, directed towards the damping chamber, up to close edge of each longitudinal slit.
EFFECT: increased efficiency when freeing pipes, increased reliability and resource.
4 cl, 6 dwg
FIELD: underground (fundamental) maintenance of wells, possible use for extracting equipment stuck at the face.
SUBSTANCE: device contains body and spindly connected to working column and object being freed, connected by screw couple to lifting angle, providing for its non-self-braking mobility and forming a "cylinder-piston" couple with hollow, filled with liquid with forming a part of hollow in bored interval of cylinder. Connection of body and spindle is made with possible induction of angular and axial acceleration onto working column with following application of torsion and axial strike. When torsion strikes are required in reverse direction screw couple is made with reverse thread.
EFFECT: increased efficiency of operation, expanded functional capabilities.
FIELD: drilling equipment, namely engineering of devices for freeing wedged part of drilling column in wells.
SUBSTANCE: device includes tubular body and hollow mandrel which are telescopically interconnected. The body is composed of parts, and contains first packer and grooves on internal surface on the side of first edge. In the middle section the body contains internal anvil-shelves, and on the side of second edge - an internal thread. The mandrel is composed of parts, contains threaded tail and grooves on external surface on the side of first edge of body, strikers between internal anvil-shelves of body, at least one piston with second packer on the side of second edge of body. Strikers and piston form a chamber filled with working liquid. The device contains at least one limiting mechanism for connecting working liquid to chamber for liquid in form of belt of greater diameter of mandrel and circular valve, installed in working liquid chamber with mandrel passing through internal hollow. The internal surface of circular valve is in contact with belt of greater diameter of mandrel. Longitudinal drive of circular valve is limited between two stops, projecting from internal surface of the body. Longitudinal drive equals at least the longitudinal drive of mandrel relatively to spring-loaded mechanism of latch from the start of application of force which makes the mandrel enter the body before setting of latch mechanism to working position. Between first and second packers at least two packers are positioned, which divide the chamber for liquid on three sections. Spring-loaded mechanism of latch is contained inside the working liquid chamber, blocking longitudinal drive of mandrel relatively to the body. The stop which limits longitudinal drive of circular valve towards the second edge of body with internal thread, is formed by shelf from lesser diameter of internal surface of body, to which one of packers, which divide working liquid chamber onto sections, is movably connected. Piston with packer on the side of second edge of body with internal thread is made with possible sliding relatively to mandrel and provided with its own packer in contact with mandrel.
EFFECT: increased reliability and resource, prevented unwanted activation, destruction or wedging of drill bit.
4 cl, 4 dwg
FIELD: drilling equipment, particularly devices to create impact loads for stuck drilling string section freeing from oil or gas well.
SUBSTANCE: device comprises tubular body and mount slidably connected with each other so that the components are restricted from rotation. Tubular body has slots formed in outer surface thereof, inner anvil extensions, the first sealing member arranged from the first end side. Mount has slots in inner surface, belt having increased diameter, percussion means arranged between anvil extensions, the second sealing member arranged in percussion means from the side of the second body end and defining working liquid chamber. Mount also has circular valve having annular side surface, two ends, outer surface and inner surface defined by inner cavity, as well as restriction mechanism, which restricts working liquid communication with one section of working liquid chamber. The restriction mechanism is installed in working liquid chamber and has mount extending through inner cavity and located inside body. The restriction mechanism includes at least one bypass valve arranged in circular valve, which restricts working liquid flow inside one chamber section in one direction. Inner circular valve surface is in tight contact with mount belt having increased diameter. Circular valve travel is limited by two stops projecting from inner body surface and is equal to at least difference between inner and outer surface radii. Stop, which limits longitudinal circular valve travel towards percussion means with the second sealing member installed therein is defined by projection extending from inner body surface having decreased diameter adapted to be slidably connected to the second sealing member of percussion means. At least one percussion means arranged in working liquid chamber has self-sealing member. Diameter of each inner body surface is equal to that of mount, which defines movable connection with the first sealing member arranged in the body.
EFFECT: increased reliability and service life, prevention of uncontrolled device actuation.
3 cl, 5 dwg
FIELD: oil and gas industry.
SUBSTANCE: invention refers to oil and gas producing industry, particularly to wellhead facilities for release of flow string stuck in borehole at failure. The wellhead facility for release of flow string out of borehole consists of a damper and of a vertical pulse generator. The damper is made in form of a vertical sealed cylinder with a piston, an under piston cavity of which is filled with gas, while the generator is made as tubular case consisting of successively connected power cylinders. The power cylinders are furnished with pistons serially joined with hollow rods so, that under piston cavities of the power cylinders communicate between them and via a distributor they communicate with a piston valveless pump. The distributor consists of a cylinder case with two chambers divided with a partition equipped with direct-acting and back spring loaded valves: also force of contraction of the back valve with the spring is higher, than contraction force of spring of the direct-acting valve.
EFFECT: simple design and raised efficiency of release of stuck flow string out of borehole.
FIELD: oil and gas production.
SUBSTANCE: disclosed facility consists of lifter connected to damper and of generator of vertical pulses coupled with pipe string below. The damper corresponds to a cylinder with a piston, internal cavity of which is filled with gas under the piston. The generator of vertical pulses is made in form of a tubular case consisting of successively coupled power cylinders and of the damper connected above with a piston rod. The power cylinders are equipped with pistons successively connected by means of hollow rods so, that under piston cavities of the power cylinders are communicated between them and with the generator of hydraulic pulses via a distributor. The lower rod of the power piston is plugged from below and is connected to the pipe string. The distributor consists of the cylinder case with two chambers and is divided with a partition furnished with a one-stage valve for supply of liquid from a pump and with a back valve for discharge of liquid from the power cylinders. A safety valve is positioned between the distributor and a generator of hydraulic pulses; it is communicated with a buffer reservoir. All valves can operate with variations within wide pressure range.
EFFECT: facilitating selection of optimal mode of operation resulting in higher efficiency of stuck pipe string extracting from borehole, also facility is simple in design, not expensive in fabrication and low metal consuming.