CN201771466U

CN201771466U - Rolling device for drilling and leak stopping

Info

Publication number: CN201771466U
Application number: CN2010205254139U
Authority: CN
Inventors: 周亚利; 玄再汉
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-09-06
Filing date: 2010-09-06
Publication date: 2011-03-23
Anticipated expiration: 2020-09-06

Abstract

The utility model discloses a rolling device for drilling and leak stopping being composed of a different-diameter joint and a rock core pipe, wherein the lower end of the rock core pipe is connected to a rolling joint whereof the lower end is fixedly provided with cemented carbide, external edge circular of cemented carbide being the same with external diameter of the rock core pipe, the lower end of the rolling joint being provided with a water outlet, a conical arbor hole of the rolling joint being provided with a steel ball valve therein, the upper end of the conical arbor hole being connected to a valve aperture, the lower end ow the conical arbor hole being fixedly provided with a lower stopping rod. Upon leak stopping, the rolling device is put inside the drilling hole, and as it contacts the mixed clay ball, the steel ball valve moves upward so as to close the valve aperture and at the same time the imposes downward rolling pressure. As pressure reaches a certain degree, the rolling device is hoisted, and the steel ball valve escapes the valve aperture so as to let small quantity of flushing liquid pumped in, and the device is made to rotate at a slow speed and then is added with pressure. Leak stopping can be achieved after a plural repetition of rolling. The utility model has the advantages of simple structure, rational design, easy construction, convenient operation, and long service time. In rolling process, the rolling device can be added pressure, cut and provided with water. The utility model also achieves processes such as rolling, rotation, and plastering to the bottom of hole at one time, which can save time and leak stopping materials.

Description

Bore blocking rolls device

Technical field

The utility model relates to the improvement of bore blocking utensil structure in the geological drilling, and specifically a kind of bore blocking rolls device.

Background technology

In the core drilling process, often run into complex formation, cover bed thickness, the gritstone that the clean property of glue is poor, loose, broken, hole is bigger, fourth of the twelve Earthly Branches layer of gravel, structural fracture is arranged, phenomenons such as karst cave growth, in such location construction, it is serious not only to leak in creeping into, and fall phenomenon such as piece in hole wall collapse and the hole and also often take place, give normally to creep into and bring very big influence.Therefore, need adopt various retaining walls and leaking-stopping measure to guarantee carrying out smoothly of core drilling according to lithology, structure and the characteristic at position, stratum and the complexity on stratum.

Adopt the leak stopping in boring of mixed clay ball, retaining wall be a kind of simple to operate, plugging time short, save material, technology that plugging effect is good.This technology is with several guard aperture loss circulation materials, fully stir be twisted into spherical, according to leakage area and hole wall shakiness cave in, fall the piece location, calculated input amount, drop into by technical requirements.Hole when shallow, directly drop on request; Hole when dark, the mixed clay ball is put in the boring after can tying up with thin Polypropylence Sheet.Be lowered to the bore blocking utensil again and roll, force loss circulation material under the effect of pressure, be squeezed into the crack of rock stratum and hole wall rough and uneven in surface in, carry out the low speed revolution then and string is moving up and down, play plastering action, thereby reach guard aperture and leak stopping purpose.

At present, when adopting this technology leak stopping, employed bore blocking rolls utensil, be to be processed into the external diameter round log wedge similar to the basket external diameter with the diameter round log thicker than basket, squeeze in the basket of drilling tool lower end, after perhaps becoming bottom end face to be flat-headed or circular arc, be threaded tamping and smear hole wall and carry out leak stopping and roll with basket with metal material processing.This utensil handling ease, easy that rolls can be gathered materials on the spot; Simple to operate.But exist following defective: end face is flat shape or circular arc, and when low speed revolution pressurization, resistance is big, is pressed into weak effect; Do not possess the function that rolls while creeping into, when mixed clay ball input amount is big, cause the pressure of loss circulation material inhomogeneously easily, be squeezed into the weak effect of rock fracture, some can not be by phenomenons such as thorough fragmentations with the mixed clay ball of plastic bundling; Carry when boring, under the swabbing action that rolls the volume that utensil occupies, be easy to cause the leak stopping thing that has been squeezed in the crack to be sucked out or break away from hole wall, plugging effect is undesirable.

The utility model content

The purpose of this utility model is at above-mentioned deficiency, provides a kind of bore blocking simple in structure, reasonable in design, easy to use, that plugging effect is good to roll device.

The technical scheme that realizes the utility model purpose is:

This bore blocking rolls device, form by the reducing joint that can be connected, the basket that is threaded with reducing joint with drill rod thread, characteristics are to be connected with at the lower end of basket screw thread to roll joint, the lower end of rolling joint is fixedly connected with carbide alloy, the sword circle footpath of going out of carbide alloy is identical with the basket external diameter, is provided with at least 1 mouth of a river in the lower end of rolling joint; Roll in the taper axle center hole at joint middle part and be provided with the steel ball valve, the upper end of taper axle center hole is connected with the cylinder valve aperture of door, and the lower end of taper axle center hole is fixedly connected with the retaining rod.

The utility model is simple in structure, can select raw material such as existing metal, carbide alloy for use and adopt conventional processes to make, and implements easily.

When using the utility model leak stopping to roll, reducing joint is connected with drilling rod, making bore blocking roll device is lowered in the boring, when touching the mixed clay ball and pressurize, the steel ball valve moves the valve hole of sealing taper axle center hole upper end in the taper axle center hole, can apply rolling pressure downwards with rig; When applied pressure acquires a certain degree when pressing not go down again, leak stopping is rolled device lift from the mixed clay sphere, as water level when higher in holing, under the swabbing action that produces rolling volume that joint occupies and mixed clay bag folder, the steel ball valve breaks away from the valve hole, be drawn into a small amount of flushing liquor, low speed is pressurization again after revolution a period of time.Through repeatedly rolling repeatedly, can reach the purpose of leak stopping.

Has enforcement simple in structure, reasonable in design, easy, easy to operate; Roll in the process, can pressurize and can cut and feed water, and the Polypropylence Sheet that drops in the cleaning hole simultaneously etc.; Roll and to carry brill, can disposablely finish technologies such as rolling, turn round, smear wall also until at the bottom of the hole, save time and loss circulation material; Advantages such as long service life have big practical and popularizing value.

Description of drawings

Fig. 1 is the structural representation of a kind of embodiment of the utility model.

Fig. 2 is the structural representation of looking up of Fig. 1.

Among the figure: 1 reducing joint, 2 baskets, 3 roll joint, 4 carbide alloy, 5 mouths of a river, 6 taper axle center holes, 7 steel ball valves, 8 valve holes, 9 retaining rods.

The specific embodiment

The utility model is further described with the embodiment that provides below in conjunction with accompanying drawing.

With reference to Fig. 1,2, this bore blocking rolls device, is made up of the reducing joint 1 that can be connected with drill rod thread, the basket 2 that is threaded with reducing joint.Be connected with at the lower end of basket screw thread and roll joint 3, the lower end of rolling joint is fixedly connected with carbide alloy 4, and the sword circle footpath of going out of carbide alloy is identical with the basket external diameter, is provided with several mouths of a river 5 in the lower end of rolling joint.Roll in the taper axle center hole 6 at joint middle part and be provided with steel ball valve 7, the upper end of taper axle center hole is connected with cylinder valve aperture of door 8, and the lower end of taper axle center hole is fixedly connected with retaining rod 9.

The utility model applicant presses embodiment, implements this bore blocking and rolls device.The on probation demonstration through inside, this bore blocking rolls device, for solving the mixed clay ball that has dropped in the boring, under the situation of not carrying brill, by the way that press on the limit, interrupted low speed turns round, adds low amounts of water, disposablely finish that press on the limit, wall is smeared on the limit and until the needs at the bottom of the hole, roll the joint lower end and stud with carbide alloy and leave the mouth of a river and be used for cutting and plasma discharge.Roll the steel ball valve in the joint middle part taper axle center hole and the setting of retaining rod, controlled the stroke distances of steel ball valve and prevented that the steel ball valve from running away.

Be lowered in the boring when using bore blocking to roll device, when touching the mixed clay ball and pressurizeing, move the draught excluder aperture of door on the steel ball valve, make and roll the device termination and become cylindrical cross-section.Down exert pressure with the rig oil cylinder,, press when not going down again, leak stopping is rolled device lift from clay sphere 200-250 millimeter when applying pressure to a certain degree.Water level is when higher in boring, rolling under the swabbing action that volume that joint occupies produces with mixed clay bag folder, and the steel ball valve breaks away from the valve hole, is drawn into a small amount of flushing liquor, and the low speed revolution is one section then, stops to turn round pressurizeing again.As in holing during no water level, turn on pump is sent into a spot of flushing liquor, and the steel ball valve moves down under the pressure of water, and open in the valve hole, and the clay that diminished shaft fills up in the heart is easy to be swept away and, and after one section of the rig low speed revolution, stops to turn round and pressurizes then.By repeatedly roll repeatedly, turn round arrive the precalculated position after, turn on pump send the little water yield or the flushing liquor that normally creeps into circulates, and returns water as finding the aperture, prove that leak stopping is successfully.As continue to leak the leak stopping repeatedly again of also available above-mentioned way.The general medium boring of leaking needs three to four just energy leak stopping successes repeatedly.By repeatedly leak stopping field compaction test, it is solid and reliable that leak stopping rolls each parts running of device, and the leak stopping rolling effect is good, obtains numerous drillers' popular welcome and favorable comment.

Claims

1. a bore blocking rolls device, form by the reducing joint that can be connected, the basket that is threaded with reducing joint with drill rod thread, it is characterized in that being connected with and roll joint at the lower end of basket screw thread, the lower end of rolling joint is fixedly connected with carbide alloy, the sword circle footpath of going out of carbide alloy is identical with the basket external diameter, is provided with at least 1 mouth of a river in the lower end of rolling joint; Roll in the taper axle center hole at joint middle part and be provided with the steel ball valve, the upper end of taper axle center hole is connected with the cylinder valve aperture of door, and the lower end of taper axle center hole is fixedly connected with the retaining rod.