CN1249325C

CN1249325C - Deep-sea multile-bit incrusting and coring rig

Info

Publication number: CN1249325C
Application number: CN 02113334
Authority: CN
Inventors: 张德玉; 姜正陆; 吴尚利; 杨明金
Original assignee: NO 5701 FACTORY OF PLA; Sichuan Petroleum Coring Center; First Institute of Oceanography SOA
Current assignee: NO 5701 FACTORY OF PLA; Sichuan Petroleum Coring Center; First Institute of Oceanography SOA
Priority date: 2002-02-06
Filing date: 2002-02-06
Publication date: 2006-04-05
Anticipated expiration: 2022-02-06
Also published as: CN1362571A

Abstract

The present invention relates to a multiple drill bit drill for coring crusts in deep sea, which is used for coring crusts in deep sea and belongs to the technical field of manufacturing devices for ocean resource development. The present invention designs a set of devices for the automatic leveling of the fixing element of the drill at the sea bottom, coring by drilling under constant pressure, automatic boosting for rock core cutting, and automatic emergency protection of the drill. The fixing element of the drill at the sea bottom can be automatically leveled in the drilling operation in deep sea, the drilling pressure can be kept constant, and additional cutting force can be applied to rock core cutting. When some part of the drill at the sea bottom fails but can not be recovered, clamped components can be completely discarded, and undamaged components can be recovered, so that the loss is reduced to the minimum.

Description

Deep-sea multile-bit incrusting and coring rig

Technical field: a kind of deep-sea multile-bit incrusting and coring rig, be used for the coring of deep-sea crust, belong to marine resources development equipment manufacturing technology field.

Background technology: in the prior art; domestic and international by retrieval patent documentation; domestic still do not have a similar mechanized equipment; though similar techniques is abroad arranged; but all can only be used for offshore or shallow sea mostly; promptly or being used for the deep-sea carries out the rig that rock is got core, or being used for the shallow sea carries out the rig that rock is got core, also all exists leveling automatically, constant voltage drilling well, emergency protection and rock core and cuts off problems such as reinforcing and interior external pressure autobalance.

The objective of the invention is at the deficiencies in the prior art, design one is enclosed within to be carried out deep-sea crust core drill and advances to have the automatic leveling of rig seabed set in the process, carries out constant voltage and creep into and get core and rock core cuts off automatic driving-force adding, the emergent protection automatically of rig and can implement once to descend the repeatedly deep-sea multile-bit incrusting and coring rig of coring of water.

Summary of the invention: the present invention is achieved in that the present invention includes rig seabed set self-level(l)ing device, constant voltage drilling apparatus, rock core cuts off automatic driving-force adding device, many drill bits from being dynamically connected conversion equipment and central control system; Set self-level(l)ing device in rig seabed adopts source of consistent pressure to wait the servo-cylinder composition hydraulic column leg structure that rubs with three, according to pascal's principle, the rod chamber and the rodless cavity of servo-cylinder are ganged up respectively, the flexible open angle of support arm of adjusting automatically by piston rod, reach the self-leveling purpose that lands, feed back to central control system during simultaneously with the leveling fructufy.The constant voltage drilling apparatus comprises the self-balancing hydraulic power source, feedback is fixed than servo pressure regulating valve, high-precision servo oil cylinder automatically, and employing is the feedback proportioning pressure regulator automatically,, promotes mutual feedback rod and realizes deciding reaching the purpose that constant voltage is crept into than pressure regulation than the piston pulse that moves about by fixed.Rock core cuts off the automatic driving-force adding device and is made of major loop and subloop, under normal circumstances, connect major loop and finish the task of cutting off of rock core, when the power of pulling off that runs into major loop and provide can not be finished rock core and cuts off task, central control system can be received signal, and the connection subloop, the original 1P power of pulling off is increased to 3P, to reach the purpose of core breaking.Emergent automatic safety device adopts independently emergency power supply system, electromagnetic valve, accumulator and safety plug; and these emergency sets are installed in reducer and drilling rod, hydraulic pressure spud leg and contact to earth plate, rig and armouring wirerope connection place respectively; in case above-mentioned any one position is in an emergency; rig will start emergent automatic safety device by the instruction of central control system; lose the part that clamping stagnation is arranged, guarantee the recovery of remaining part.Many drill bits drilling rod connects conversion equipment automatically can realize being dynamically connected certainly of drilling rod under the driving of hydraulic motor, reach a plurality of drill bits and change automatically, realizes the high efficiency of coring, improves limited rate of energy under water.

Advantage of the present invention is: when can be implemented in the deep sea drilling operation, rig guarantees the steady of rig in the automatic leveling of seabed set; The constant voltage drilling rig can be realized the constant of drilling pressure when creeping into; On the rock core chopping up apparatus, adopt major and minor control loop, can be cutting off of rock core the bigger power of cutting off is provided; Emergent automatic safety device can go wrong in certain part of seabed rig and can not reclaim the time, finishes abandoning the parts that go wrong, and reclaims intact parts, reduces the loss to greatest extent; In addition, can realize once descending water to finish and repeatedly get core, increase work efficiency greatly.

Description of drawings:

Fig. 1 is the structural representation of seabed of the present invention rig.

Fig. 2 is the schematic diagram of set self-level(l)ing device in seabed of the present invention.

Fig. 3 is a constant voltage drilling rig schematic diagram of the present invention.

Fig. 4 cuts off the augmentor schematic diagram for rock core of the present invention.

Fig. 5 is the emergent automatic safety device schematic diagram of the present invention.

Fig. 6 is the structure for amplifying schematic diagram of the many drill bits of the present invention from the conversion equipment (6) that is dynamically connected.

Fig. 7 is the many drill bits of the present invention hanging buckle structure schematic diagram in the conversion equipment (6) that is dynamically connected.

The specific embodiment: provide embodiments of the invention below in conjunction with accompanying drawing: the present invention includes rig seabed set self-level(l)ing device, constant voltage drilling apparatus, rock core cut off the automatic driving-force adding device, and emergent automatic safety device and many drill bits are from being dynamically connected conversion equipment; The present invention is by the comprehensive control operation process of central controller of laying aboard ship, instrument control cabinet (13) on the many drill bits crust rig of armouring wirerope (2) and deep-sea is connected, reach to automatic leveling, the constant voltage of rig creep into, rock core cuts off automatic driving-force adding, the automatic conversion of emergent protection automatically and a plurality of coring bits; Set self-level(l)ing device in seabed is by waiting friction oil cylinder (15), (19), (21), solenoid operated directional valve (18), (20), (22), and accumulator (17) is formed, and accumulator (17) is installed in the instrument control cabinet (13); In the ordinary course of things, solenoid operated directional valve (18), (20), (22) open, friction oil cylinder (15) such as make, (19), (21) rod chamber communicates, rodless cavity is connected with toroidal membrane, when rig contacts to earth, if the gradient appears in the seabed, three legs (9) just can not contact to earth simultaneously, and the leg that lands earlier etc. the in-oil cylinder pressure of friction will increase, because three are waited friction oil cylinder (15), (19), (21) rod chamber is ganged up, rodless cavity is connected with toroidal membrane, therefore, the leg that lands earlier etc. the in-oil cylinder hydraulic oil of friction will flow to two other leg that does not land wait the friction oil cylinder, at this moment, the friction oil cylinder that waits of the leg that lands earlier shrinks, its support arm draws in, and angle just reduces, and the friction oil cylinder that waits of two other leg extends, its support arm opens, angle just increases, and so circulation is up to the automatic leveling of rig; The constant voltage drilling apparatus is by three servo-cylinders (4), drilling apparatus (12), many drill bits are from being dynamically connected conversion equipment (6), hydraulic pump (10), reducer (11), self feed back is fixed to be constituted than servo pressure regulating valve (25), and self feed back is fixed pulses than the piston that moves about by fixed than servo pressure regulating valve (25), promotes mutual feedback rod and realizes surely than pressure regulation, and provide stable drilling pressure, generally speaking, hydraulic pump (10) does not start, and (16) are the guiding device of setting upright of invention; Rock core cuts off the automatic driving-force adding device and is made of major loop and subloop, under normal circumstances, connect solenoid operated directional valve (24), the hydraulic coupling that is provided by three servo-cylinders (4) is as long as the power that pulls off that provides by major loop just can be finished the task of cutting off, when the power of pulling off that runs into major loop and provide can not be finished when cutting off task, central controller can be received signal, connect solenoid operated directional valve (23) and start subloop, will increase the power that pulls off that rock core cuts off like this, to reach the purpose of core breaking; Emergent automatic safety device has adopted independently emergency power supply system, comprises accumulator (17), solenoid operated directional valve (26) and catapult-launching gear (27); Emergent automatic safety device is installed in respectively that hinged (8) of hinge joint place, the hydraulic pressure spud leg (14) of reducer (11) and drilling rod (29) and the plate (9) that contacts to earth are located, hinge joint place of rig and armouring wirerope (3); In operation process, when above-mentioned any old place is in an emergency, all will start emergent automatic safety device, the latch of relevant connection place hinge will be pulled out by the solenoid operated directional valve (26) that central controller is connected emergency set, lose the part of clamping stagnation, to guarantee the recovery of intact part; Many drill bits comprise hydraulic motor (30), rotating disc (28), coring bit (31), drilling rod (29), drill bit hanging groove (32), buckle (33) from the conversion equipment (6) that is dynamically connected, the external diameter of drilling rod (29) is identical with the internal diameter of coring bit (31), be provided with three at drilling rod (29) bottom outer round surface by three equal parts and buckle (33), be provided with three drill bit hanging grooves (32) by three equal parts at the top internal circular surfaces of coring bit (31); During work, under the driving of hydraulic motor (30), rotating disc (28) can drive coring bit (31) turn to drilling rod (29) under, drilling rod (29) moves down and inserts in the coring bit (31), after the rotating certain angle, in the drill bit hanging groove (32) to drop into core work by buckling (33) extension; When needs exchange core drill bit (31) for, rotate the certain angle of drilling rod (29) in the opposite direction, it is separable coring bit (31) and drilling rod (29) that drilling rod (29) is moved up, repeat hung and buckled connection that this action just can realize drilling rod (29) and coring bit (31), reach the automatic conversion of a plurality of drill bits, improve the high efficiency of getting core, when carrying out marine coring, by on the ship seabed multile-bit incrusting and coring rig being put into the seabed by armouring wirerope (2), the ball float (1) that is contained on the armouring wirerope (2) plays the effect that balance armouring wirerope (2) is conducted oneself with dignity.

Claims

1. A deep-sea multi-bit incrustation coring rig, characterized in that: the deep-sea multi-bit incrustation coring rig includes a seabed fixed automatic leveling device, a constant pressure drilling device, a multi-bit automatic connection conversion device, and a core cutting device. Automatic booster device and emergency automatic protection device, armored steel cable is connected with the instrument control cabin on the deep-sea crust core drilling rig;

a. The seabed fixed automatic leveling device is composed of an equal friction oil cylinder, an electromagnetic reversing valve and an energy accumulator;

b. The constant pressure drilling device is composed of a servo cylinder, a drilling device, a multi-drill automatic connection conversion device, a hydraulic pump, a reducer, and a self-feedback fixed-ratio servo pressure regulating valve;

c. The automatic boosting device for cutting the core is composed of a main circuit and a secondary circuit;

d. The emergency automatic protection device is composed of an energy accumulator, an electromagnetic reversing valve and an ejection device, which are respectively installed at the joint of the reducer and the drill pipe, the joint of the hydraulic pile leg and the contact plate, the drill rig and the armored steel The hinge of the cable.

2. A kind of deep-sea multi-bit incrustation coring drilling rig according to claim 1, characterized in that: the multi-bit automatic connection conversion device includes a hydraulic motor, a rotating disk, a coring drill, a drill rod and a drill hanging groove, The outer diameter of the drill rod is the same as the inner diameter of the coring bit, and three hooks are arranged on the outer surface of the lower part of the drill rod, and three hanging grooves are arranged on the upper inner surface of the core bit.