(57) Abstract:The whipstock is designed to provide a deflection drill wells from a given direction. The whipstock includes a housing, a working surface which in cross section has the shape of a longitudinal trough, the threads in the rear part of the housing for connection with the shank, the axial longitudinal channel in the case with access to the working surface and the anchor. At a distance of not less than half the length of the whipstock from its tail, symmetrical to the longitudinal plane of the whipstock, on its surface below the longitudinal troughs made two longitudinal flats, which in cross section are two intersecting outside diameter of the whipstock chord, the angle between them is 60o. The axial channel in the housing connected with the said faces through radial holes, thread the tail portion of the body is at an angle to the longitudinal axis of the whipstock. The threads on the anchor shank, the lower part having an eccentric ring and thread to attach the anchor, which is made in the form of explosive packer. This embodiment of the whipstock can simplify its design and is rivani new trunk from the original well. 3 Il. The invention relates to the field of mining, in particular for drilling directional wells, and relates to means such as a whipstock, to ensure that the deviation of the borehole from the original direction.From the area known in the art whipstock comprising a housing, a working surface which in cross section has the shape of a longitudinal trough, while the whipstock has a body housing a conduit for supply of cement to the shank, and the specified channel is associated with a drilling tool, comprising lowered and tubing cutter on their end, through a flexible pipe (see U.S. patent 5894889, CL E 21 In 7/08, 99,).The disadvantage of the whipstock is the difficulty of performing line for cement supply, and low reliability of the structure due to fracture or broken elastic pipeline during the descent of the projectile in the bore.The closest, as to the problem at hand, and the total number of matching essential attributes is whipstock for U.S. patent 5427179, CL E 21 In 7/08, 1995, which includes a housing, a working surface which in cross section has the shape of a longitudinal trough, carried out is ARPUs for his connection with the shank, axial longitudinal channel in the case with access to the working surface and the anchor.The disadvantage of the whipstock is the availability of special equipment for pressing against the wall of the bore opposite to the direction of the deviation, and the need to create a hydraulic connection to surface equipment anchor whipstock, which is made in the form of a hydraulic packer.The objective of the invention is to simplify the design of the whipstock with increasing productivity through the use of logging cable for lowering and installation of the whipstock.This object is achieved in that the wedge-diverter comprising a housing, a working surface which in cross section has the shape of a longitudinal trough, the threads in the rear part of the housing for connection with the shank, the axial longitudinal channel in the case with access to the working surface and the anchor at a distance of not less than half the length of the whipstock from its tail, symmetrical to the longitudinal plane of the whipstock, on its surface below the longitudinal troughs made two longitudinal flats, which in cross section are soboa axial channel in the housing connected with the said faces through radial holes, in this thread the tail portion of the body is at an angle to the longitudinal axis of the whipstock, the threads on the anchor shank, the lower part having an eccentric ring and thread to attach the anchor, which is made in the form of explosive packer.Execution of longitudinal flats on the side surface of the whipstock and their relationship with the axial longitudinal channel will wash out of the gap between the body of the wedge and the wall of the borehole when the cutting window in the wall of the casing and provides unimpeded passage of the wireline channels whipstock during its descent and installation in the borehole. The execution thread the tail portion of the whipstock at an angle to its longitudinal axis will provide the deviation of the shank to the borehole wall, will increase the efficiency of its fixation.The invention is illustrated by drawings, where Fig.1 shows a General view of the whipstock of Fig.2 is a cross section along a-a in Fig.1; Fig.3 shows a portion of the whipstock with the shank and the anchor is placed in the well.The whipstock includes a housing 1, a working surface which in cross section has the shape of a longitudinal trough 2, the tail part 3 thread 4, which is made at an angle to propowerbot in the form of a chute 2. At a distance of not less than half the length of the whipstock from thread 4 his tail, symmetrically relative to the Central longitudinal plane, on the side surface of the whipstock below the longitudinal trough 2 is a longitudinal flats 6, which in cross section are two intersecting outside diameter of the housing 1 of the chord, the angle between them is 60o. Axial longitudinal channel 5 associated with 6 flats through radial holes 7. With the tail part of the body of the whipstock through the thread 4 is connected to the shank 8. The shank 8 is attached eccentric ring 9, which together with carved 4 provides axial displacement of the whipstock when it is installed in the well.Pre-wedge collapses with the shank 8, the bottom of which is installed eccentric ring 9. After this wedge and the shank along their longitudinal channel 5 is skipped useplease device (not shown), which then connects to the cylinder of an explosive packer 10, and then head explosive packer. Geophysics seasoned explosive packer, through the adapter, connect it to the lift and make the descent of the wedge in the hole to your installation location..Some disadvantages of this design whipstock should include the difficulty of carrying out the azimuthal orientation and the difficulty of extracting the set of the wedge after it is used. Whipstock comprising a housing, a working surface which in cross section has the shape of a longitudinal trough, the threads in the rear part of the housing for connection with the shank, the axial longitudinal channel in the case with access to the working surface and the anchor, wherein at a distance of not less than half the length of the whipstock from its tail, symmetrical to the longitudinal plane of the whipstock, on its surface below protolog the outside diameter of the whipstock chord, the angle between them is 60oand the axial channel in the housing connected with the said faces through radial holes, thread the tail portion of the body is at an angle to the longitudinal axis of the whipstock, the threads on the anchor shank, the lower part having an eccentric ring and thread to attach the anchor, which is made in the form of explosive packer.
FIELD: mining industry.
SUBSTANCE: device has two bodies, laced between drilling pipes and rock-destroying element, drilling assembly changing assembly, mounted between bodies. Bodies are placed at a space between each other and interconnected moveably by drill angle changing assembly, made in form of bushing, inside of which a rubber bushing is placed, passing through inner hollows of bodies. Rubber bushing is provided with compacting element and elements for excluding its deformation. Value of space is selected from condition providing for drilling along planned trajectory, providing for exit from slanting portion into horizontal. Elements for excluding deformation of rubber bushing are made in form of steel rings. Fixing elements are made in form of two pairs of coaxial stops in lower and upper bodies respectively at angle of 90° to each other.
EFFECT: higher productiveness.
2 cl, 1 ex, 1 dwg
FIELD: drilling equipment.
SUBSTANCE: device has body, shaft, mounted in body on bearings, drive made in form of hollow spring-loaded rod with outer slits, movement converter made in form of outer bushing with spiral grooves, interacting with response shelves of inner hollow bushing, piston with compaction, spring-loaded ring, provided with slits and toothed half-sleeve. Outer bushing of movement converter is connected to body, and inner one is connected to piston and provided with toothed half-sleeve, interacting with toothed half-sleeve of spring-loaded rod. Rod spring is supported by body via stop ball bearing. Spring-loaded ring, interacting to response half-sleeve of shaft by toothed half-sleeve, is engaged with body by slits.
EFFECT: higher reliability.
FIELD: mining industry.
SUBSTANCE: drilling toll has body with thread and inner washing channel, as well as matrix, contacting pin by its inner surface and having outer end spherical surface, provided with rock-destroying means. Pin in body is mounted coaxially. Outer end spherical surface of matrix with rock-destroying means is made with diameter equal to outer diameter of drilling toll, and inner surface of matrix and outer surface of pin are made spherical, centers of which coincide with center of outer end spherical surface of matrix. Between inner surface of matrix and spherical pin, balls are mounted in recesses of contact surfaces. Recesses for balls made in matrix are elongated in vertical directions from ball center for distance L=(R+r)tgΨ, where R - radius of pin spherical outer surface, m; r - ball radius, m; Ψ - maximally possible angle of matrix rotation in vertical plane, in degrees.
EFFECT: higher reliability.
FIELD: oil and gas industry.
SUBSTANCE: device has body, provided with anchor, lowered on pipes to given depth, having guide and ring-shaped compaction of hydro-drive, and also made with possible displacement inside pipes and body by displacement means, hydraulic engine, passing through compaction, hollow of which is connected to destroying tool hollow, consisting of flexible shaft, provided with destroying head. Device also has tool for destroying casing column and tool for destroying rock, while hydro-drive consists of hollow leading and following shafts, made with possible rotation and longitudinal movement of the latter inside leading shaft until mounting in socket of leading shaft, forming non-pressurized couple cylinder-piston, while torque from leading shaft to following shaft is passed via ratchet gear, body has hydraulic channel, connecting guide hollow to ring-shaped well space, while on the side, opposite to output aperture of guide hydraulic deflector of piston-cylinder type is mounted on it, and in upper portion of body a cylindrical recess is present, made with possible hermetic mounting of leading shaft with rotation, while outside the body an anchor is mounted, being in threaded connection to sub connected to body, and engine is made with possible hermetic mounting in ring-shaped compaction, mounted above recess in body at a distance, lesser than total length of engine and leading shaft, while on the inner surface of body a stop is mounted made with possible interaction with shelves on outer surface of engine body. For making perforation channels in abrasive rocks rock-destroying tool is used, consisting of flexible shaft and chisel. As movement means flexible pipes are used, hollow of which connects to engine hollow.
EFFECT: higher reliability, higher efficiency.
7 cl, 5 dwg
FIELD: oil production, particularly for drilling oil and gas well cluster.
SUBSTANCE: method involves lowering pipe string into casing pipe, wherein pipe string has deflector connected to one end thereof; opening-out casing pipe within the necessary range; alternately lowering flexible tube having nozzle in pipe string up to reaching opened-out casing pipe area under the action of the deflector; supplying high-pressure liquid through flexible tube having nozzle simultaneously with translation thereof for necessary length to form additional well bores; initial removing flexible tube from pipe string and turning pipe string with deflector through necessary angle to obtain required number of additional well bores; final removing flexible pipe with nozzle out of casing pipe. The casing pipe is opened-out over the full diameter thereof within the necessary range and after casing pipe opening deflector is installed in opened area. After additional well bore forming and before pipe string with deflector rotation flexible tube with nozzle is removed from opened-out area of casing pipe.
EFFECT: reduced number of round-trip operations for well cluster forming under the action of liquid head and, as a result, reduced costs.
FIELD: drilling equipment, particularly for directional drilling, namely control devices adapted to control angle and reactive moment.
SUBSTANCE: control device has hollow central member and three hollow tubular noncoaxial members connected to hollow central member. Inner member is disposed in center between the first and the second members. The first and the second members are connected with inner members by threaded connection. The first member is connected to spindle by threaded coupling, the second member is attached to engine body by threaded coupling and central member is connected to inner member by spline. Each of central member and the first member are provided with sectional contact seats located from spindle connection side, wherein a pair of sectional contact seats arranged from either sides of meridional spindle plane in drilling string curvature plane are defined between central and the first members. Sectional contact seats defined between central and the first members are spaced a distance L from the nearest edges of sectional contact seats of central and the first members along central axis of the first member. The distance L is more or equal to spindle diameter D. Angular deviation of the sectional contact seat formed in the first member from meridian spindle plane in drilling string curvature plane is oppositely directed relative reactive drilling bit moment.
EFFECT: increased stability and angle of gerotor engine deflection and increased accuracy of non-uniform well bottom zone penetration.
2 cl, 10 dwg
FIELD: oil and gas well drilling equipment with the use of hydraulic downhole motors.
SUBSTANCE: support-and-centering member is made as metal hub with blades connected to spindle connector. Spindle connector has support cone formed on outer surface thereof and adapted to provide rigid connection with metal hub from inner surface thereof. Support cone of the connector is formed from side of conical thread connecting spindle body with connector. Spindle connector has splines to connect thereof with metal hub. Metal hub is pressed with pressing cone, retaining washer and nut from another side thereof. Metal hub may be installed concentrically or eccentrically to spindle connector axis or outer surface thereof may be differently shaped and arranged eccentrically, concentrically or obliquely with respect to spindle connector axis.
EFFECT: reduced costs of spindle usage.
FIELD: drilling equipment, particularly for deflecting the direction of boreholes.
SUBSTANCE: device includes deflecting wedge with fastening mechanism made as corrugated tube with one sealed end and sub disposed between deflecting wedge and fastening mechanism. Device also has channel to supply fluid into corrugated tube, movable joint between sub and wedge and cutting tool. Device also comprises holding unit for deflecting wedge installed in the sub and made as a piston with rod and fixing means arranged in hydraulic cylinder. Hydraulic cylinder interior communicates with that of corrugated tube. Upper rod part is installed to cooperate with lower part of the wedge from guiding plane side. Channel for flushing fluid supplying is made as hydraulic line connecting drill pipe interior and that of cutting tool with corrugated tube interior, wherein the cutting tool is secured to upper part of deflecting wedge by means of shear bolt.
EFFECT: increased rigidity of deflecting wedge fixation in casing pipe of the well.
3 cl, 2 dwg
FIELD: well construction, particularly to built cluster wells.
SUBSTANCE: method involves lowering pipe string provided with deflector on end thereof in casing pipe; perforating the casing pipe within previously selected interval; performing the following alternating operations including lowering flexible pipe with nozzle in casing string into above perforation area under the action of the deflector, supplying pressurized liquid through flexible pipe with nozzle, translating thereof to form additional well bores having predetermined depths and lifting the flexible pipe after the predetermined number of well bores forming, finally removing the flexible pipe from the casing pipe. Before casing pipe lowering casing pipe is provided with retained guide. The guide includes process case with through orifices and bush. Formed on inner surface of process case are guiding slots and cylindrical recess located in through orifice area. The bush is inserted in the recess to seal through orifices. The bush is restricted from axial downward displacement by rest. During the lowering operation performing through orifices are arranged within above perforation interval and casing pipe is secured, deflector provided with a number of guiding channels and spring-loaded inserts displaces the bush up to the rest and the spring-loaded inserts cooperate with guiding slots to bring outlet orifices of guiding channels in register with through orifices. To obtain demanded number of well bores flexible pipe with nozzle is removed only from pipe string and deflector after each additional well bore creation.
EFFECT: reduced number of trip operations during well construction.
4 dwg, 1 ex
FIELD: oil and gas production industry, particularly multilateral well construction.
SUBSTANCE: method involves lowering pipe string provided with diverter at end thereof; cutting casing pipe within predetermined interval; lowering flexible pipe with nozzle until flexible pipe enters into opened casing pipe zone under the action of the diverter in alternation with supplying pressurized liquid via flexible pipe provided with nozzle; performing translational flexible pipe movement to create additional well bores having necessary lengths along with removing the flexible pipe to create predetermined number of additional bores. Before casing pipe lowering in the well the casing pipe is provided with acid-soluble insert arranged opposite to formation to be opened. Casing pipe cutting is performed around the full perimeter thereof for necessary length within predetermined opening interval by solving the acid-soluble insert during acid supplying through pipe string into above predetermined interval. After that the diverter having several diverting channel is installed in the interval. After each additional well bore forming flexible string with nozzle is removed only from the pipe string and diverter to create predetermined number of additional bores. After that the flexible pipe with nozzle is finally removed from the casing pipe.
EFFECT: reduced number of trips.