CN111155953B - Intelligent Drilling and Stuck Release Device while Drilling - Google Patents

Abstract

The invention relates to an intelligent drilling device for unblocking while drilling. The device intelligently controls high-pressure drilling fluid to spray and flush the drill bit mud bag from the annulus, thereby realizing unblocking while drilling. Its technical solution: a driving component is provided at the connection between the upper and lower joints; the driving component is composed of a driving component solenoid valve, a plunger, a spring, a central tube and a stopper; a liquid spray component, a locking component and a main body interceptor are provided on the lower joint. Component; the liquid injection assembly consists of a spring seat, a liquid injection valve spring, a liquid injection valve spool, a liquid injection valve seat, a liquid injection valve valve cover and a flow channel; the locking assembly consists of a locking block and a locking valve seat. ;The main shut-off assembly consists of a valve plate, a telescopic pin, a torsion spring and a torsion spring cover. The invention has the function of unblocking while drilling downhole, can carry out intelligent control, reduce drilling non-working time, reduce drilling costs and improve drilling safety.

Description

Intelligent drilling and jamming removal device

Technical field

The invention relates to an intelligent drilling device for unstuck while drilling, which realizes unstuck while drilling by intelligently controlling high-pressure drilling fluid to spray and flush the drill bit mud bag from the annulus, and belongs to the technical field of oil and gas drilling devices.

Background technique

During the drilling process of mud shale formations, due to the high content of clay minerals in mud shale (30% to 50%), when water-based drilling fluid is used, it easily reacts with water and expands. The expanded clay is sticky and easy to Adhesion to the cutting teeth and bit body causes bit mud. Drill bit mud bag will cause the water hole to be blocked during the drilling process, and the chip flute and blade will be wrapped by the bottom of the well, the well wall and the cuttings that are not returned in time, causing the pump pressure to increase and the drilling speed to decrease. The production of mud bags seriously affects the normal use of drill bits.

In order to solve the problem of mud bags on the drill bit and even drilling accidents, the traditional solutions are: (1) If signs of mud bags are found on the drill bit, drilling should be stopped immediately, and low solid phase drilling fluid should be driven into the well as soon as possible to clean the drill bit; ( 2) Adjust the mud performance in a timely manner, configure lubricants and surfactants, and clean the bottom of the well to ensure that the drill bit surface is clean, thereby removing the mud bag; (3) Stop drilling, increase the displacement to enhance the hydraulic flushing effect, and lift the drill bit to break away. At the bottom of the well, increase the rotational speed to increase the centrifugal force, so that the mud is easily thrown out, and move it up and down several times, then press the drill bit to the bottom of the well, circulate the turntable for 5 to 10 minutes without turning on the turntable, and repeat the above process; if in 2 If it is invalid within a few cycles, drilling should be considered. Although the traditional solution can solve the problem of drill bit mud bag, it cannot unblock while drilling and cannot be controlled intelligently. Its unblocking efficiency is low, the non-working time is long, the risk of unblocking is high, and it is difficult to meet actual needs.

This patent proposes an intelligent drilling and jamming release device, which can realize intelligent jamming release while drilling. It is an efficient, safe and intelligent jamming release device.

Contents of the invention

The purpose of the present invention: In order to efficiently, economically and safely solve the problem of mud bag stuck accidents that may occur in the existing oil drilling process, an intelligent drilling and unblocking device while drilling is provided, which device has the function of unblocking while drilling in the well. It can carry out intelligent control to reduce drilling non-working time, reduce drilling costs and improve drilling safety.

In order to achieve the above objects, the technical solutions adopted by the present invention are:

The intelligent drilling and drilling unblocking device mainly consists of an upper joint 1, a lower joint 13, a driving component, a liquid injection component 8, a locking component and a main body intercepting component. The tail of the upper joint 1 is connected to the end of the lower joint 13 through threads; It is characterized in that: the upper joint 1 is equipped with a driving assembly solenoid valve 2 and a plunger 4. The opening and closing of the driving assembly solenoid valve 2 controls the flow of high-pressure liquid into and out of the hydraulic chamber 3, and the valve plate 12 is realized by the reciprocating motion of the plunger 4. opening and closing; a spring 6 is installed on the lower joint 13; the driving assembly is composed of a driving assembly solenoid valve 2, a plunger 4, a spring 6, a central tube 7 and a stopper 5; the plunger 4 is in contact with the stopper 5, and the spring 6, The stopper 5 is in contact with the central tube 7; the liquid injection assembly 8 consists of a spring seat 8-1, a liquid injection valve spring 8-2, a liquid injection valve spool 8-3, a liquid injection valve seat 8-6, a liquid injection valve valve The cover 8-4 and the flow channel 8-5 are composed of a cover 8-4 and a flow channel 8-5. During normal drilling, the injection valve spring 8-2 is in a pre-compressed state and the flow channel 8-5 is in a closed state; the locking assembly is composed of a locking block 15 and a lock. The locking valve seat 14 is composed of a tight valve seat 14. During normal drilling, the locking block 15 is in a retracted state; the main shutoff assembly is composed of a valve plate 12, a telescopic pin 11, a torsion spring 10 and a torsion spring cover 9. During normal drilling, During the process, the torsion spring 10 is in a compressed state and the valve plate 12 is in an open state. The driving assembly consists of the driving assembly solenoid valve 2, the plunger 4, the spring 6, the center tube 7 and the stopper 5. During normal drilling, the driving assembly solenoid valve 2 is in a closed state, and there is high-pressure liquid in the hydraulic chamber 3. The plug 4 is away from the solenoid valve 2 of the driving assembly, the spring 6 is in a compressed state, the central tube 7 pushes against the valve plate 12, and the valve plate 12 is opened; when mud bag stuck occurs, the solenoid valve 2 of the driving assembly opens, and the high pressure in the hydraulic chamber 3 The liquid flows into the drill string, the plunger 4 is close to the solenoid valve 2 of the driving assembly, the central tube 7 no longer pushes open the valve plate 12, and the valve plate 12 is closed.

The liquid injection assembly 8 consists of a spring seat 8-1, a liquid injection valve spring 8-2, a liquid injection valve spool 8-3, a liquid injection valve seat 8-6, a liquid injection valve valve cover 8-4 and a flow channel 8- 5 components, during the normal drilling process, the liquid injection valve spring 8-2 is in a pre-compressed state, the liquid injection valve spool 8-3 is close to the spring seat 8-1, and the flow channel 8-5 is sealed; when a mud bag occurs When the drill is stuck, the liquid injection assembly 8 is connected with the central tube hole 7-1, and high-pressure liquid flows into the liquid injection assembly 8. The liquid injection valve spool 8-3 opens under the action of the high-pressure liquid, and the high-pressure liquid enters the flow channel 8-5. The main shutoff assembly consists of a valve plate 12, a telescopic pin 11, a torsion spring 10, a torsion spring cover 9 and a central tube 7. During normal drilling, the central tube 7 pushes against the valve plate 12 and the valve plate 12 opens; When mud bag stuck occurs, the central pipe 7 no longer pushes open the valve plate 12, the valve plate 12 is in an unlocked state, and the valve plate 12 is closed through the pre-torque of the torsion spring 10.

The locking assembly consists of a locking block 15 and a locking valve seat 14. During normal drilling, the locking block 15 retracts and the valve plate 12 is not locked; when mud bag stuck occurs, the locking block 15 Extend and lock the valve plate 12.

The beneficial effects of the present invention are: the present invention has the function of unblocking while drilling, can perform intelligent control, reduce drilling non-working time, reduce drilling costs, improve drilling safety, and can handle mud bag stuck accidents efficiently, economically and safely. , shorten the drilling period and reduce drilling costs.

Description of the drawings

Figure 1 is a schematic structural diagram of the intelligent drilling and jamming-unblocking device of the present invention.

Figure 2 is a schematic structural diagram of the valve plate closed and the liquid injection valve opened.

Figure 3 is a partial enlarged view of I in Figure 1.

In the picture: 1. Upper joint, 2. Drive component solenoid valve, 3. Hydraulic chamber, 4. Plunger, 5. Stopper, 6. Spring, 7. Center tube, 7-1. Center tube hole, 8. Spray Liquid component, 8-1. Spring seat, 8-2. Liquid injection valve spring, 8-3. Liquid injection valve spool, 8-4. Liquid injection valve valve cover, 8-5. Flow channel, 8-6. Liquid injection valve seat, 9. Torsion spring cover, 10. Torsion spring, 11. Telescopic pin, 12. Valve plate, 13. Lower joint, 14. Locking valve seat, 15. Locking block.

Detailed ways

The technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in Figures 1, 2, and 3, the intelligent drilling while drilling jamming release device of the present invention is mainly composed of an upper joint 1, a lower joint 13, a driving component, a liquid spray component 8, a locking component and a main body intercepting component. The tail of the upper joint 1 is connected to the end of the lower joint 13 through threads; the driving assembly is composed of the driving assembly solenoid valve 2, the plunger 4, the spring 6, the center tube 7 and the stopper 5. The driving assembly solenoid valve 2 is fixed on the upper side through a threaded connection. On the joint 1; the plunger 4 is installed in the hydraulic chamber 3 of the upper joint 1 through clearance fit; a spring 6 is installed at the end of the lower joint 13 to fit through the gap; the spray assembly 8 consists of a spring seat 8-1, a spray liquid The valve spring 8-2, the liquid injection valve valve core 8-3, the liquid injection valve valve seat 8-6, the liquid injection valve valve cover 8-4 and the flow channel 8-5, in which the liquid injection valve valve seat 8-6 and The lower joint 13 is threaded, and the liquid injection valve cover 8-4 and the liquid injection valve seat 8-6 are also threaded; the main shut-off assembly consists of a valve plate 12, a telescopic pin 11, a torsion spring 10 and a torsion spring cover 9 components, the valve plate 12 is installed in the middle of the telescopic pin 11, the torsion spring 10 is installed at both ends of the telescopic pin 11, the torsion spring 10 is in a pre-tightened state during normal drilling; the locking assembly consists of a locking block 15 and a locking valve The valve seat 14 is composed of.

As shown in Figures 1 and 2, the driving assembly consists of the driving assembly solenoid valve 2, plunger 4, spring 6, central tube 7 and stopper 5. The driving component solenoid valve 2 is fixed on the upper joint 1 through a threaded connection, the plunger 4 is installed in the hydraulic chamber 3 of the upper joint 1 through a gap fit, the spring 6 is installed inside the lower joint 13 through a gap fit, and the central tube 7 is installed on the spring 6 internal. When removing the mud bag, the solenoid valve 2 of the driving assembly opens, the high-pressure liquid in the hydraulic chamber 3 flows into the drill string, the spring 6 returns to its original length, drives the central tube 7 and the stopper 5, and the plunger 4 moves in the direction of the solenoid valve 2 of the driving assembly.

As shown in Figures 1 and 2, four hydraulic chambers 3 are processed on the upper joint 1 to install the plunger 4. One side of the plunger 4 is in contact with the stopper 5. The hydraulic chamber 3 is connected to the solenoid valve 2 of the driving assembly.

As shown in Figures 1 and 2, the lower joint 13 is equipped with four liquid spray assemblies 8 on the same cross-section, which enables fluid to flow out from all directions and achieves efficient jamming.

As shown in Figures 1, 2, and 3, the liquid injection assembly 8 consists of a spring seat 8-1, a liquid injection valve spring 8-2, a liquid injection valve spool 8-3, a liquid injection valve seat 8-6, The liquid valve consists of a valve cover 8-4 and a flow channel 8-5. The liquid injection valve seat 8-6 is threaded with the lower joint 13, the liquid injection valve cover 8-4 is threaded with the liquid injection valve seat 8-6, and the spring seat 8-1 is connected with the middle liquid injection valve core 8 -3 adopts welding. Installation sequence: first install the liquid injection valve core 8-3 in the liquid injection valve seat 8-6, and install it from above; then install the liquid injection valve spring 8-2 below the liquid injection valve seat 8-6; Then, the spring seat 8-1 is welded to the liquid injection valve core 8-3; finally, the assembled liquid injection assembly 8 is installed on the lower joint 13. During normal drilling, the liquid injection valve spring 8-2 is in a pre-compressed state, the flow channel 8-5 is closed, and sealing rings are used to seal where sealing is required.

The principle of the present invention is: during normal drilling, the driving assembly solenoid valve 2 and the liquid injection assembly 8 are both in a closed state, the valve plate 12 is in an open state, the plunger 4 is away from the driving assembly solenoid valve 2, and the central tube 7 opens the valve plate. 12. Spring 6 and torsion spring 10 are in a compressed state, and the locking block 15 is in a retracted state. When a mud bag occurs, the solenoid valve 2 of the driving assembly opens, and the high-pressure liquid in the hydraulic chamber 3 flows into the drill string. The plunger 4 approaches the solenoid valve 2 of the driving assembly. The central pipe 7 no longer pushes open the valve plate 12, and the valve plate 12 closes. The liquid spray assembly 8 is opened, the flow channel 8-5 is in an open state, and the locking block 15 extends out to lock the valve plate 12. After the locking is completed, the solenoid valve is closed, the pump is started, and the high-pressure liquid enters the spray assembly 8 through the central pipe 7 hole, and then sprays out from the flow channel 8-5 to flush the mud bag, thereby achieving the purpose of releasing the jam.

Claims (4)

1. The intelligent drilling while-drilling unclamping device mainly comprises an upper joint (1), a lower joint (13), a driving assembly, a liquid spraying assembly (8), a locking assembly and a main body intercepting assembly, wherein the tail part of the upper joint (1) is connected with the end part of the lower joint (13) through threads; the method is characterized in that: the upper joint (1) is provided with a driving component electromagnetic valve (2) and a plunger (4), the opening and closing of the driving component electromagnetic valve (2) is used for controlling the high-pressure liquid to enter and exit the hydraulic cavity (3), and the opening and closing of the valve plate (12) is realized through the reciprocating motion of the plunger (4); a spring (6) is arranged on the lower joint (13); the driving assembly consists of a driving assembly electromagnetic valve (2), a plunger (4), a spring (6), a central tube (7) and a stop block (5); the plunger (4) is contacted with the stop block (5), and the spring (6), the stop block (5) and the central tube (7) are contacted; the liquid spraying assembly (8) consists of a spring seat (8-1), a liquid spraying valve spring (8-2), a liquid spraying valve core (8-3), a liquid spraying valve seat (8-6), a liquid spraying valve cover (8-4) and a flow channel (8-5), wherein the liquid spraying valve spring (8-2) is in a precompression state and the flow channel (8-5) is in a closing state in the normal drilling process; the locking assembly consists of a locking block (15) and a locking valve seat (14), and the locking block (15) is in a retracted state in the normal drilling process; the main body shutoff assembly consists of a valve plate (12), a telescopic pin shaft (11), a torsion spring (10) and a torsion spring sealing cover (9), wherein the torsion spring (10) is in a compressed state and the valve plate (12) is in an opened state in the normal drilling process.

2. The intelligent drilling while drilling stuck freeing apparatus as claimed in claim 1, wherein: in the normal drilling process, the electromagnetic valve (2) of the driving assembly is in a closed state, high-pressure liquid exists in the hydraulic cavity (3), the plunger (4) is far away from the electromagnetic valve (2) of the driving assembly, the spring (6) is in a compressed state, the central tube (7) pushes the valve plate (12) open, and the valve plate (12) is opened; when the mud-covered drill is stuck, the driving assembly electromagnetic valve (2) is opened, high-pressure liquid in the hydraulic cavity (3) flows into the drill string, the plunger (4) is close to the driving assembly electromagnetic valve (2), the central tube (7) does not push the valve plate (12) open any more, and the valve plate (12) is closed.

3. The intelligent drilling while drilling stuck freeing apparatus as claimed in claim 1, wherein: in the normal drilling process, the liquid spraying valve spring (8-2) is in a precompressed state, the liquid spraying valve core (8-3) is close to the spring seat (8-1), and the flow channel (8-5) is sealed; when the mud-wrapped drill is stuck, the liquid spraying component (8) is communicated with the central pipe hole (7-1), high-pressure liquid flows into the liquid spraying component (8), the valve core (8-3) of the liquid spraying valve is opened under the action of the high-pressure liquid, and the high-pressure liquid enters the flow channel (8-5).

4. The intelligent drilling while drilling stuck freeing apparatus as claimed in claim 1, wherein: in the normal drilling process, the central tube (7) pushes the valve plate (12) open, and the valve plate (12) is opened; when the mud-wrapped drill is stuck, the central tube (7) does not push the valve plate (12) any more, the valve plate (12) is in an unlocked state, and the valve plate (12) is closed by the pretwist of the torsion spring (10).