With coring projectile


E21B25/06 - the core receiver having a flexible liner or inflatable retaining means

 

(57) Abstract:

Usage: the invention relates to mining, namely with coring technique. The inventive with coring the projectile includes a housing with a side window, a drive transmission mechanism, cerapiinit with keralam, Carnivale and crown, as well as the casing diameter greater than the diameter of the shell inside it. The side window of a shell combined with a side window of the housing. The actuator is made in the form of downhole screw motor and gear mechanism in the form of rigidly connected with karnaprayag flexible hollow shaft, reinforced with wire and equipped with drilling crown. At the end of a rotary drilling interval of the well into the cavity of the shell is lowered managing the ball, which covers the Central channel of the regulating sleeve, slips her and makes mud fluid to the downhole motor. The rotor of the motor causes the rotation of cerapiinit, which cuts into the wall of the borehole and selects the core. The use of the invention increases the efficiency of the device by using complete with actuator in the form of a downhole screw motor. 9 Il.

The invention relates to the mining industry, technical is neuborne shells, comprising a housing, a drive transmission mechanism, and cerapiinit with the crown [1] a Disadvantage of known devices is the inability of selection for one trip several rock samples. In addition, these devices have low reliability due to the complexity of Electromechanical systems.

Also known with coring projectile, comprising a housing with a side window that is hosted in United with drill pipe and equipped with a drilling bit hollow casing with a side window, combined with a window casing, and openings around Windows, telling the body cavity from the annular space, cerapiinit with keralam and drilling crown, placed in the Windows combined housing and casing, and driven downhole motor with gear mechanism in the form of a hollow flexible shaft associated with the drive spline connection, and the control hydraulic mechanism with the control of the discharged ball [2] A disadvantage of the known device is the inability of the drilling and coring of the walls of the drilled hole during one flight.

The objective is to increase the efficiency of the device by using the drive downhole drilling digitcom window, posted in attached to the drill pipes and equipped with a drilling bit hollow casing with a side window, combined with a window casing, and openings around Windows, telling the body cavity from the annular space, cerapiinit with keralam and drilling crown, placed in the Windows combined housing and casing, and with the actuator in the form of a downhole motor with gear mechanism in the form of a hollow flexible shaft associated with the drive spline connection, and the control hydraulic mechanism with the control of the discharged ball downhole motor is made in the form of drilling hydraulic screw motor, communicated through the distribution of hydraulic mechanism with a hollow drill pipe, the upper end of the flexible shaft has rigidly connected therewith a spring-loaded bottom of the piston with a check valve, holes and calibrated through channels and placed between the spring and the piston coupling protrusions and depressions, the bottom end of the piston has a response to them protrusions and depressions, the cavity kinoplenka communicated through the check valve and orifice with podpornoy cavity in place of the calibrated output through channels in the piston, the latter made expanding.

Deletel - hydrated hydraulic mechanism with a hollow drill pipe, ensures its autonomy as a mode of Carnauba, as well as the possibility of alternate drilling and core-drilling of the borehole walls.

Supply the upper end of the flexible shaft rigidly connected to it a spring-loaded bottom of the piston with a check valve, holes and calibrated through channels and placed between the spring and the piston coupling with protrusions and depressions and the fact that the lower end of the piston has a response to them protrusions and depressions, and the cavity kinoplenka communicated through the check valve and orifice with podpornoy cavity in place of the calibrated output through channels in the piston, the latter made expanding, provides for the establishment on cerapiinit with crown torque and axial load, which is necessary technological parameters of the drilling process. Torque generated by the rotor of the downhole motor when pumping through him drilling fluid, and transmission is made through the piston communicating through a spline connection with a rotor of the downhole drilling motor. The axial load on cerapiinit is created by the pressure of the drilling fluid on the piston, and an orifice used to control the VNA in the cavity kinoplenka and provides torque transmission from the piston to the crown. Message cavity kinoplenka sloping channels with podpornim space in the housing ensures the creation of the upward flow of drilling mud in cerapiinit that facilitates the movement of the core in its cavity than accelerating the process of Carnauba.

Coupling protrusions and depressions communicating with the bottom end of the piston with the response they protrusions and depressions, provides for the creation of vibrations on the top of kinoplenka to successfully move the core in its cavity.

In Fig.1, 2 shows with coring the projectile is in the drilling mode, side view; Fig. 3 a fragment of a longitudinal section ratcheting mechanism of Fig.4 is a view along arrow a in Fig.2; Fig.5, 6 with coring shell mode Carnauba; Fig. 7 section kinoplenka with the core; Fig.8 is a view along b-B in Fig.2; Fig.9 is a view along b-b In Fig.3.

With coring the projectile includes a housing 1 in the form of a pipe, the lower end of which is blocked by a bottom 2. The housing 1 has a side hole 3 from the nozzle 4 to the diameter of the drill crown 5, around which the holes 6 of a smaller diameter. The eccentric housing 1 is placed in the casing 7 is larger than that of the housing 1, diameter with drilling bit 8, and rigidly attached to its inner stewartia 9 of the casing 7. Crown 5 is connected with an end nozzle 10 kinoplenka 11, made of an elastic material and reinforced by steel wires 12 connected to the overlying cavity of the housing 1 by the piston 13, which is made through an orifice 14. The piston 13 through the sleeve 15 with the internal spline coupler is in contact with the rod 16, which by means of a threaded coupling with the channel 17 is connected to the spindle 18 of the downhole motor, such as a screw. The housing 1 is connected to the stator 19 of the engine. The piston 13 is provided with a sealing ring 20 and the bearings 21. Under the piston 13 is fibroblastlike mechanism in the form of clutch 22 with the projections in the form of rolling bearings 23 and the end face of the piston 13 are grooves 24 (see Fig.2). The clutch 22 is rigidly connected with a cylindrical compression spring 25, the lower end of which is connected to the housing 1. The lower part of kinoplenka 11 is placed in a curved guide tube 26, which is connected with the body 1 and the nozzle 4 mounted coaxially with the side opening 3 in the housing 1. At the outer end of the pipe 4 is placed a permanent magnet 27 that communicates with the crown 5, reinforced carbide cutters 28 (Fig.7).

The piston 13 is Central Torsen 13 holes 14. The hole 29 provided with a ball check valve 31.

In the conical bore cavity crowns 5 posted collet carnival 32, and the cavity end of the pipe 10 carnola 33 (Fig.7). In the upper part of the housing 1 above the downhole motor posted by the distribution of the hydraulic mechanism in the form overlying the cavity of the casing of the piston 34 with the sealing ring 35, the channels 36 and 37 and the movable sleeve 38, mounted in the Central channel of the piston 34 is equipped with a shear pin 39. Moreover, in the upper position of the sleeve overlaps the channels 37, open into the cavity of the downhole motor, and the lower channels 36 open into the cavity of the casing 7. The sleeve 38 is equipped with a Jack under the discharged managing balloon 40 (Fig.5).

Lateral outlet opening 9 in the casing 7 is closed legkorazdrazhimoy, such as a plastic, a cover 41, which is connected with the casing by screws or inserted into the prepared grooves (not shown).

The principle of operation with coring of the projectile is as follows.

Assembled, as shown in Fig.1, 2, the device is lowered on the pipe on the bottom. Then, in the cavity of the pipe serves the drilling fluid and the rotation of the projectile rotor. The drilling fluid through the channels 36 in the distribution of the hydraulic mechanism is knosti. At this stage the shell is drilling, producing opubco well before reaching the sampling interval of the productive formation.

Then make cleaning a well bore drilled from the long sludge pumping drilling fluid through the shell.

Thereafter, the cavity drill pipe is lowered managing the ball 40, which sits in the slot on the sleeve 38. The pressure of the drilling fluid, the sleeve 38 is shifted down, cutting off the pin 39, blocking the channels 36 and opening the channels 37.

Drilling fluid enters the cavity of the downhole motor. Torque is transmitted to the spindle shaft 16 through a splined connection to the sleeve 15 and the piston 13 and further cerapiinit 11, the tube 10 and the crown 5. The pressure of the drilling fluid and the rotation of the crown 5 is destroyed cover 41 and the crown 5 cuts into the wall of the borehole, wyborowa the column core.

The flow of drilling fluid from the spindle passes through the channels 17 in newportnews space of the housing 1, creating pressure on the piston 13, which provides the axial thrust on the crown 5. The rotary piston 13 moves downward, compressing the spring 25, which is fixed to the sleeve 22 with the projections in the form of balls 23 of the rolling bearing. Thanks to the SJ it blows. As the piston 13 is connected to karnaprayag 11, these shocks contribute to the promotion of a core in the cavity of kinoplenka 11. The stream of drilling fluid flowing from the holes 14, a cavity kinoplenka 11 upward flow by creating a vacuum in the channels extending from top to bottom of hole 14, which summed up the channels 30 provided with a cavity kinoplenka 11. Reverse the flow of the solution prevents the ball valve 31, which ensures the integrity of the core.

The transmission of torque to the crown 5 through the elastic cerapiinit 11 provides a reinforcing its wire 12. It also facilitates the movement of the core into kinoplenka 11, because it creates in its cavity helical protrusions, whereby on the surface of the core are generated during the rotation of kinoplenka 11 longitudinal force.

The flow of drilling mud from podpisnogo space expires in holes 6, blurring the well wall, facilitating the drilling of the core, the cooling of the crown 5, and then, partially entering the cavity kinoplenka 11, moves the core into it.

Coming into cerapiinit 11 Kern slonyaetsya on the posts of a certain length by keralam 33, and the last sugina 25 returns cerapiinit 11 with the piston 13 to its original position. While the crown 5 is fixed in the housing 1 by the magnet 27.

Redrilling in another interval occurs by moving the device in the desired direction and re-supply of drilling fluid in the cavity of the drill pipe. While coming to the crown 5 Kern pushes the previously drilled core in the cavity kinoplenka 11, and carnival 32 is shifted to the extended portion of the conical bore, passing the core in the cavity kinoplenka 11.

Multiple coring is provided by the length of kinoplenka 11, and the depth feed kinoplenka one Sabuncu of Carnauba is governed by the length of the splined shaft 16.

With coring PROJECTILE, comprising a housing with a side window that is hosted in United with drill pipe and equipped with a drilling bit hollow casing with a side window, combined with a window casing, and openings around Windows, telling the body cavity from the annular space, cerapiinit with keralam and drilling crown, placed in the Windows combined housing and casing, and with the actuator in the form of a downhole motor with gear mechanism in the form of a hollow flexible shaft associated with the drive spline connection, and distribution of hydraulic mechanizing screw engine reported through the distribution of hydraulic mechanism with a hollow drill pipe, the upper end of the flexible shaft has rigidly connected therewith a spring-loaded at the bottom of the piston with a check valve, holes and calibrated through channels and placed between the spring and the piston coupling protrusions and depressions, the bottom end of the piston IMail return them protrusions and depressions, the cavity kinoplenka communicated through the check valve and orifice with podpornoy cavity in place of the calibrated output through channels in the piston, the latter made expanding.

 

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