CN111155953A - Intelligent drilling while-drilling stuck releasing device - Google Patents

Abstract

Translated fromChinese

本发明涉及智能钻井随钻解卡装置，该装置通过智能控制高压钻井液，从环空喷射冲洗钻头泥包，从而实现随钻解卡。其技术方案：上、下接头连接处设置有驱动组件；驱动组件由驱动组件电磁阀、柱塞、弹簧、中心管和挡块组成；下接头上设置有喷液组件、锁紧组件和主体截流组件；喷液组件由弹簧座、喷液阀弹簧、喷液阀阀芯、喷液阀阀座、喷液阀阀盖和流道组成；锁紧组件由锁紧块和锁紧阀阀座组成；主体截流组件由阀板、伸缩销轴、扭簧和扭簧封盖组成。本发明在井下具有随钻解卡功能，可进行智能控制，减少钻井非工作时间，减少钻井成本，提高钻井安全。

The invention relates to an intelligent drilling-while-drilling device for releasing the jam while intelligently controlling the high-pressure drilling fluid to spray and flush the mud bag of the drill bit from the annular space, thereby realizing the jam-removing while drilling. Its technical scheme: a driving component is arranged at the connection of the upper and lower joints; the driving component is composed of a solenoid valve of the driving component, a plunger, a spring, a center tube and a stopper; a liquid spray component, a locking component and a main body interception are arranged on the lower joint Components; the liquid injection assembly consists of a spring seat, a liquid injection valve spring, a liquid injection valve core, a liquid injection valve seat, a liquid injection 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 unlocking the card while drilling in the downhole, can carry out intelligent control, reduces the non-working time of drilling, reduces the cost of drilling, and improves the safety of drilling.

Description

Intelligent drilling while-drilling stuck releasing device

Technical Field

The invention relates to an intelligent drilling while-drilling stuck freeing device which can realize stuck freeing while-drilling by intelligently controlling high-pressure drilling fluid and spraying and flushing a drill bit mud bag from an annular space, and belongs to the technical field of petroleum and natural gas drilling devices.

Background

In the drilling process of a shale stratum, due to the fact that the content of clay minerals of shale is high (30% -50%), when the water-based drilling fluid is used, the clay easily reacts with water and then expands, the expanded clay has viscosity, and the clay is easily adhered to cutting teeth and a bit body to cause bit balling. The drill bit mud bag can cause that a water hole is blocked in the drilling process, a chip groove and a blade are wrapped by the well bottom, the well wall, rock debris which does not return upwards in time and the like, the phenomena of pump pressure rising and drilling speed reduction are caused, and the normal use of the drill bit is seriously influenced by the generation of the mud bag.

In order to solve the problem that drilling accidents happen due to bit balling, the traditional solution method is as follows: (1) when the drill bit is found to have a mud inclusion image, the drilling should be stopped immediately, and low solid phase drilling fluid is injected into the well for cleaning the drill bit at the first time; (2) adjusting the slurry performance in time, preparing a lubricant and a surfactant, and cleaning the bottom of the well to ensure the surface of the drill bit to be clean, thereby removing mud bags; (3) stopping drilling, improving the discharge capacity to enhance the hydraulic flushing effect, lifting the drill bit to be separated from the well bottom, improving the rotating speed to increase the centrifugal force, enabling mud blocks to be easily thrown out, moving up and down for a plurality of times in a large scale, then pressing the drill bit down to the well bottom, circulating for 5-10 min without opening a rotary table, and repeatedly operating the processes; if not valid for 2 cycles, tripping should be considered. The traditional solution can solve the problem of bit balling, but can not be unfreezed while drilling, can not be intelligently controlled, has low unfreezing efficiency, long non-working time and large unfreezing risk, and is difficult to meet the actual requirement.

The intelligent stuck freeing device while drilling is provided by the patent, can realize intelligent stuck freeing while drilling, and is a high-efficiency, safe and intelligent stuck freeing device.

Disclosure of Invention

The purpose of the invention is as follows: in order to efficiently, economically and safely solve the problem of the probable mud blockage drilling accident in the existing petroleum drilling process, the device for releasing the blockage while drilling for intelligent drilling is provided, has the function of releasing the blockage while drilling underground, can perform intelligent control, reduces the non-working time of drilling, reduces the drilling cost and improves the drilling safety.

In order to achieve the purpose, the invention adopts the technical scheme that:

the intelligent drilling while-drilling stuck freeing device mainly comprises an upper joint 1, alower joint 13, a driving assembly, aliquid spraying assembly 8, a locking assembly and a main body interception assembly, wherein the tail part of the upper joint 1 is connected with the end part of thelower joint 13 through threads; the method is characterized in that: the upper joint 1 is provided with a driving assembly electromagnetic valve 2 and a plunger 4, the high-pressure liquid is controlled to enter and exit the hydraulic cavity 3 by opening and closing the driving assembly electromagnetic valve 2, and thevalve plate 12 is opened and closed by the reciprocating motion of the plunger 4; thelower joint 13 is provided with a spring 6; the driving assembly consists of a driving assembly electromagnetic valve 2, a plunger 4, a spring 6, a central pipe 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; theliquid 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 in the normal drilling process, the liquid spraying valve spring 8-2 is in a pre-compression state, and the flow channel 8-5 is in a closed state; the locking assembly consists of alocking block 15 and alocking valve seat 14, and in the normal drilling process, thelocking block 15 is in a retraction state; the main part subassembly that dams comprisesvalve plate 12, telescopic pin axle 11,torsional spring 10 and torsional spring closing cap 9, and at normal well drilling in-process,torsional spring 10 is in compression state, andvalve plate 12 is in the open mode.

The driving assembly consists of a driving assembly electromagnetic valve 2, a plunger 4, a spring 6, a central pipe 7 and a stop block 5, wherein in the normal drilling process, the driving assembly electromagnetic valve 2 is in a closed state, high-pressure liquid exists in a hydraulic cavity 3, the plunger 4 is far away from the driving assembly electromagnetic valve 2, the spring 6 is in a compressed state, the central pipe 7 jacks avalve plate 12, and thevalve plate 12 is opened; when the mud bag 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 pipe 7 does not push thevalve plate 12 open any more, and thevalve plate 12 is closed.

Theliquid 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 in the normal drilling process, the liquid spraying valve spring 8-2 is in a pre-compression 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 bag is stuck, theliquid spraying assembly 8 is communicated with the central pipe hole 7-1, high-pressure liquid flows into theliquid spraying assembly 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.

The main body intercepting component consists of avalve plate 12, a telescopic pin shaft 11, atorsion spring 10, a torsion spring sealing cover 9 and a central pipe 7, wherein in the normal drilling process, thevalve plate 12 is jacked open by the central pipe 7, and thevalve plate 12 is opened; when the mud bag drill is generated, the central pipe 7 does not push thevalve plate 12 any more, thevalve plate 12 is in an unlocked state, and thevalve plate 12 is closed through the pre-torque of thetorsion spring 10.

The locking assembly consists of alocking block 15 and alocking valve seat 14, and in the normal drilling process, thelocking block 15 retracts and does not lock thevalve plate 12; when the mud bag is stuck, thelocking block 15 extends out to lock thevalve plate 12.

The invention has the beneficial effects that: the underground intelligent control system has the function of releasing the stuck drill while drilling, can perform intelligent control, reduce the non-working time of drilling, reduce the drilling cost, improve the drilling safety, can efficiently, economically and safely process the accident of stuck drill in mud, shortens the drilling period and reduces the drilling cost.

Drawings

FIG. 1 is a schematic structural diagram of an intelligent stuck-while-drilling stuck-freeing device for drilling according to the present invention.

Fig. 2 is a schematic structural view showing the valve plate closed and the liquid discharge valve opened.

Fig. 3 is a partial enlarged view of i in fig. 1.

In the figure: 1. the liquid spraying valve comprises an upper connector, 2 a driving assembly electromagnetic valve, 3 a hydraulic cavity, 4 a plunger, 5 a stop block, 6 a spring, 7 a central pipe, 7-1 a central pipe hole, 8 a liquid spraying assembly, 8-1 a spring seat, 8-2 a liquid spraying valve spring, 8-3 a liquid spraying valve core, 8-4 a liquid spraying valve cover, 8-5 a flow passage, 8-6 a liquid spraying valve seat, 9 a torsion spring sealing cover, 10 a torsion spring, 11 a telescopic pin shaft, 12 a valve plate, 13 a lower connector, 14 a locking valve seat and 15 a locking block.

Detailed Description

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

As shown in fig. 1, 2 and 3, the intelligent drilling while-drilling stuck releasing device mainly comprises an upper joint 1, alower joint 13, a driving assembly, aliquid 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 thelower joint 13 through threads; the driving assembly consists of a driving assembly electromagnetic valve 2, a plunger 4, a spring 6, a central pipe 7 and a stop block 5, and the driving assembly electromagnetic valve 2 is fixedly connected to the upper joint 1 through threads; the plunger 4 is arranged in the hydraulic cavity 3 of the upper joint 1 in a clearance fit manner; the end of thelower joint 13 is provided with a spring 6 which is matched through a gap; theliquid 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 seat 8-6 is in threaded connection with thelower connector 13, and the liquid spraying valve cover 8-4 is also in threaded connection with the liquid spraying valve seat 8-6; the main body intercepting component consists of avalve plate 12, a telescopic pin shaft 11, atorsion spring 10 and a torsion spring sealing cover 9, wherein thevalve plate 12 is installed in the middle of the telescopic pin shaft 11, thetorsion spring 10 is installed at two ends of the telescopic pin shaft 11, and thetorsion spring 10 is in a pre-tightening state during normal drilling; the locking assembly consists of alocking block 15 and alocking valve seat 14.

As shown in fig. 1 and 2, 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 drive assembly solenoid valve 2 is fixed on the upper joint 1 through threaded connection, the plunger 4 is installed in the hydraulic cavity 3 of the upper joint 1 through clearance fit, the spring 6 is installed inside thelower joint 13 through hole fit, and the central pipe 7 is installed inside the spring 6. When solving the mud bag, drive assembly solenoid valve 2 opens, and the high-pressure liquid flows into the drilling string in hydraulic pressure chamber 3, and spring 6 resumes former length, drives center tube 7 and dog 5, and plunger 4 moves towards drive assembly solenoid valve 2 direction.

As shown in fig. 1 and 2, four hydraulic chambers 3 are formed in the upper joint 1 for mounting a plunger 4, one side of the plunger 4 is in contact with a stopper 5, and the hydraulic chambers 3 are communicated with the driving assembly solenoid valve 2.

As shown in fig. 1 and 2, thelower joint 13 is provided with fourliquid spraying assemblies 8 on the same cross section, so that the fluid can flow out from all directions, and the high-efficiency unfreezing is realized.

As shown in fig. 1, 2 and 3, theliquid ejecting assembly 8 is composed of a spring seat 8-1, a liquid ejecting valve spring 8-2, a liquid ejecting valve core 8-3, a liquid ejecting valve seat 8-6, a liquid ejecting valve cover 8-4 and a flow passage 8-5. The valve seat 8-6 of the liquid spraying valve is in threaded connection with thelower connector 13, the valve cover 8-4 of the liquid spraying valve is in threaded connection with the valve seat 8-6 of the liquid spraying valve, and the spring seat 8-1 is welded with the valve core 8-3 of the middle liquid spraying valve. The installation sequence is as follows: firstly, installing a liquid spraying valve core 8-3 in a liquid spraying valve seat 8-6 from the top; then a liquid spraying valve spring 8-2 is arranged below the liquid spraying valve seat 8-6; then welding the spring seat 8-1 on the valve core 8-3 of the liquid spraying valve; finally, the assembledspray assembly 8 is mounted onlower joint 13. In the normal drilling process, the liquid spraying valve spring 8-2 is in a pre-compression state, the flow passage 8-5 is closed, and a sealing ring is adopted to seal the position needing to be sealed.

The principle of the invention is as follows: during normal drilling, the driving assembly electromagnetic valve 2 and theliquid spraying assembly 8 are both in a closed state, thevalve plate 12 is in an open state, the plunger 4 is far away from the driving assembly electromagnetic valve 2, the central pipe 7 jacks thevalve plate 12, the spring 6 and thetorsion spring 10 are in a compressed state, and thelocking block 15 is in a retracted state. When mud is wrapped, the driving assembly electromagnetic valve 2 is opened, high-pressure liquid in the hydraulic cavity 3 flows into a drill string, the plunger 4 is close to the driving assembly electromagnetic valve 2, the central pipe 7 does not push thevalve plate 12 open any more, thevalve plate 12 is closed, theliquid spraying assembly 8 is opened, the flow channel 8-5 is in an open state, and thelocking block 15 extends out of thelocking valve plate 12. After locking is completed, the electromagnetic valve is closed, the pump is started, high-pressure liquid enters theliquid spraying assembly 8 through the hole 7 of the central pipe, and then is sprayed out from the flow channel 8-5 to wash mud bags, so that the aim of releasing the blockage is fulfilled.

Claims (4)

Translated fromChinese

1.智能钻井随钻解卡装置，主要是由上接头(1)、下接头(13)、驱动组件、喷液组件(8)、锁紧组件和主体截流组件组成，上接头(1)尾部通过螺纹与下接头(13)端部连接；其特征在于：上接头(1)上安装有驱动组件电磁阀(2)和柱塞(4)，通过驱动组件电磁阀(2)的开闭来控制高压液体进出液压腔(3)，通过柱塞(4)的往返运动来实现阀板(12)的启闭；下接头(13)上安装有弹簧(6)；驱动组件由驱动组件电磁阀(2)、柱塞(4)、弹簧(6)、中心管(7)和挡块(5)组成；柱塞(4)与挡块(5)接触，弹簧(6)、挡块(5)和中心管(7)接触；喷液组件(8)由弹簧座(8-1)、喷液阀弹簧(8-2)、喷液阀阀芯(8-3)、喷液阀阀座(8-6)、喷液阀阀盖(8-4)和流道(8-5)组成，在正常钻井的过程中，喷液阀弹簧(8-2)处于预压缩状态，流道(8-5)处于关闭状态；锁紧组件由锁紧块(15)和锁紧阀阀座(14)组成，在正常钻井的过程中，锁紧块(15)处于缩回状态；主体截流组件由阀板(12)、伸缩销轴(11)、扭簧(10)和扭簧封盖(9)组成，在正常钻井过程中，扭簧(10)处于压缩状态，阀板(12)处于开启状态。1. The intelligent drilling-while-drilling device is mainly composed of an upper joint (1), a lower joint (13), a driving component, a liquid injection component (8), a locking component and a main body shut-off component. The tail of the upper joint (1) It is connected with the end of the lower joint (13) through a thread; it is characterized in that: the upper joint (1) is provided with a driving assembly solenoid valve (2) and a plunger (4), which are opened and closed by the driving assembly solenoid valve (2). Control the high pressure liquid into and out of the hydraulic chamber (3), and realize the opening and closing of the valve plate (12) through the reciprocating motion of the plunger (4); a spring (6) is installed on the lower joint (13); the driving component is driven by a solenoid valve of the driving component (2), plunger (4), spring (6), central tube (7) and stopper (5); plunger (4) is in contact with stopper (5), spring (6), stopper (5) ) is in contact with the central pipe (7); the liquid injection assembly (8) consists of a spring seat (8-1), a liquid injection valve spring (8-2), a liquid injection valve core (8-3), a liquid injection valve seat (8-6), the liquid injection valve cover (8-4) and the flow channel (8-5). During the normal drilling process, the liquid 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 consists of a locking block (15) and a locking valve seat (14). During normal drilling, the locking block (15) is in a retracted state; the main body shut-off assembly It consists of a valve plate (12), a telescopic pin shaft (11), a torsion spring (10) and a torsion spring cover (9). During normal drilling, the torsion spring (10) is in a compressed state, and the valve plate (12) is in a state of compression. On state.2.根据权利要求1所述的智能钻井随钻解卡装置，其特征在于：驱动组件由驱动组件电磁阀(2)、柱塞(4)、弹簧(6)、中心管(7)和挡块(5)组成，在正常钻井的过程中，驱动组件电磁阀(2)处于关闭状态，液压腔(3)中存在高压液体，柱塞(4)远离驱动组件电磁阀(2)，弹簧(6)处于压缩状态，中心管(7)顶开阀板(12)，阀板(12)开启；在发生泥包卡钻时，驱动组件电磁阀(2)打开，液压腔(3)中的高压液体流入钻柱内部，柱塞(4)靠近驱动组件电磁阀(2)，中心管(7)不再顶开阀板(12)，阀板(12)关闭。2. The intelligent drilling-while-drilling unlocking device according to claim 1, characterized in that: the drive assembly is composed of a drive assembly solenoid valve (2), a plunger (4), a spring (6), a central pipe (7) and a stopper During the normal drilling process, the solenoid valve (2) of the drive assembly is in a closed state, high pressure liquid exists in the hydraulic chamber (3), the plunger (4) is away from the solenoid valve (2) of the drive assembly, and the spring ( 6) In the compressed state, the central pipe (7) pushes open the valve plate (12), and the valve plate (12) is opened; when the mud bag is stuck, the solenoid valve (2) of the drive assembly is opened, and the valve plate (12) in the hydraulic chamber (3) is opened. The high-pressure liquid flows into the drill string, the plunger (4) is close to the solenoid valve (2) of the drive assembly, the central pipe (7) no longer pushes the valve plate (12), and the valve plate (12) is closed.3.根据权利要求1所述的智能钻井随钻解卡装置，其特征在于：喷液组件(8)由弹簧座(8-1)、喷液阀弹簧(8-2)、喷液阀阀芯(8-3)、喷液阀阀座(8-6)、喷液阀阀盖(8-4)和流道(8-5)组成，在正常钻井的过程中，喷液阀弹簧(8-2)处于预压缩状态，喷液阀阀芯(8-3)靠近弹簧座(8-1)，流道(8-5)被封住；在发生泥包卡钻时，喷液组件(8)与中心管孔(7-1)连通，高压液体流入喷液组件(8)，喷液阀阀芯(8-3)在高压液体作用下打开，高压液体进入流道(8-5)。3. The intelligent drilling-while-drilling unlocking device according to claim 1, characterized in that: the liquid injection assembly (8) is composed of a spring seat (8-1), a liquid injection valve spring (8-2), a liquid injection valve valve The core (8-3), the injection valve seat (8-6), the injection valve cover (8-4) and the flow channel (8-5) are composed of the injection valve spring (8-5) during the normal drilling process. 8-2) In the pre-compressed state, the liquid injection valve core (8-3) is close to the spring seat (8-1), and the flow channel (8-5) is sealed; when the mud bag is stuck, the liquid injection assembly (8) Connected with the central pipe hole (7-1), the high-pressure liquid flows into the liquid-injection assembly (8), the liquid-injection valve core (8-3) is opened under the action of the high-pressure liquid, and the high-pressure liquid enters the flow channel (8-5) ).4.根据权利要求1所述的智能钻井随钻解卡装置，其特征在于：主体截流组件由阀板(12)、伸缩销轴(11)、扭簧(10)、扭簧封盖(9)和中心管(7)组成，在正常钻井的过程中，中心管(7)顶开阀板(12)，阀板(12)开启；在发生泥包卡钻时，中心管(7)不再顶开阀板(12)，阀板(12)处于未锁紧状态，阀板(12)通过扭簧(10)的预扭矩实现关闭。4. The intelligent drilling-while-drilling unlocking device according to claim 1, characterized in that: the main body shut-off assembly is composed of a valve plate (12), a telescopic pin shaft (11), a torsion spring (10), and a torsion spring cover (9). ) and the central pipe (7). During the normal drilling process, the central pipe (7) lifts the valve plate (12), and the valve plate (12) opens; when the mud bag is stuck, the central pipe (7) does not work. The valve plate (12) is pushed up again, the valve plate (12) is in an unlocked state, and the valve plate (12) is closed by the pre-torque of the torsion spring (10).

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