CN202081824U - Hydraulic parallel-slippage expanding reamer while drilling - Google Patents

Hydraulic parallel-slippage expanding reamer while drilling Download PDF

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Publication number
CN202081824U
CN202081824U CN201020549680XU CN201020549680U CN202081824U CN 202081824 U CN202081824 U CN 202081824U CN 201020549680X U CN201020549680X U CN 201020549680XU CN 201020549680 U CN201020549680 U CN 201020549680U CN 202081824 U CN202081824 U CN 202081824U
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CN
China
Prior art keywords
cover
wing
snap ring
driving ring
spring
Prior art date
Application number
CN201020549680XU
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Chinese (zh)
Inventor
祝效华
敬俊
Original Assignee
西南石油大学
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Priority to CN201020549680XU priority Critical patent/CN202081824U/en
Application granted granted Critical
Publication of CN202081824U publication Critical patent/CN202081824U/en

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Abstract

The utility model relates to a hydraulic parallel-slippage expanding reamer while drilling. The expanding reamer while drilling mainly comprises a body, an upper cover, a spring, a mandrel, a snap ring, a limiting stopper, a knife wing, a driving ring, a driving ring locking piece, a piston, a split-flow cavity and a lower end cover; the upper end of the mandrel is connected to the upper cover through threads; the upper cover is connected with the body through an upper cover long pin; the spring is mounted in the upper cover; the lower end of the spring is tightly pressed on the snap ring; the limiting stopper is connected onto the snap ring through a bolt; the knife wing is tightly pressed between the snap ring and the driving ring; the snap ring and the driving ring are sleeved on the mandrel; the contact surface of the snap ring and the knife wing is an inclined plane with the tilt angle of 1 degree to 10 degrees; and a spray nozzle is arranged on a driving ring arm and can move together with the driving ring, so as to guarantee the cleaning effect of the knife wing. The hydraulic parallel-slippage expanding reamer while drilling can expand the diameter of boreholes effectively and is used for the well drilling construction under the well conditions of easy side wall shrinkage and well blockage.

Description

A kind of hydraulic pressure parallel slip expanding drill-following reamer

Technical field

The utility model relates to a kind of special downhole tool that is used for oil, natural gas and geological drilling, especially a kind of hydraulic pressure parallel slip expanding drill-following reamer.

Background technology

Oil-gas exploration is faced with the geological problem that becomes increasingly complex, the drilling well difficulty increases day by day, the medium and small wellbore section annular clearance of deep-well and ultradeep well is little, bring a series of problems for drilling well, well cementing operation, excessive as annular pressure lost, shaft bottom hydraulic action energy is lower, cementing quality can not guarantee etc., and often runs into bad ground undergauge bit freezing, salt deposit creep undergauge, drilling cuttings deposition, the borehole wall and form complex situations such as false filter cake.If hole shrinkage takes place or collapse, then drill bit and drill string are difficult to be lowered to once more, occur in when collapsing on drill bit or the stabilizer, then may cause rotating and on carry; Well generation undergauge before setting of casing, then sleeve pipe can't be lowered to.If undergauge take place in well cementation or during completion or cave in, then can cause cementing quality poor, the oil well life-span is short.

Adopt the reaming hole drilling technology can improve drilling efficiency, promote cementing quality, optimize casing programme, reduce operating cost, the main tool of reaming hole technology is a drill-following reamer.Utilize drill-following reamer can increase the diameter of normal reach, undergauge section well, reduce the probability of saline bed undergauge bit freezing, alleviate crowded the ruin problem of rock stratum creep to sleeve pipe, and the technical problem that solves the little links of bringing such as a series of drilling wells, completion, well cementation and oil recovery of deep well section annular clearance.

That is that all right is ripe for the technology of present homemade reamer, and efficient is not high, safety is low, and product structure also need continue perfect.External reamer service of goods expense costliness, long-term dependence is unfavorable for the China's oil industry development abroad.

Summary of the invention

The purpose of this utility model is in order to overcome the deficiencies in the prior art, and a kind of hydraulic pressure parallel slip expanding drill-following reamer that can do with driller is provided.Utilize the duty of pressure reduction control tool, can effectively avoid the process that makes a trip loaded down with trivial details in the drilling process, save time, easy and simple to handle.

The technical scheme that the utility model adopted is:

A kind of hydraulic pressure parallel slip of the utility model expanding drill-following reamer mainly is made up of body, loam cake, spring, axle, locating snap ring, limited block, wing, driving ring, driving ring lock dog, piston, shunting chamber, bottom end cover.Described axle upper end is by being threaded onto loam cake, and having strong market potential with loam cake between loam cake and the body is connected.Spring is installed in loam cake inside, and the spring lower end is pressed on the locating snap ring.Limited block is connected on the locating snap ring by screw.Wing is pressed between locating snap ring and the driving ring, and locating snap ring and driving ring all are sleeved on the axle.

The contact surface of locating snap ring and wing is that the inclination angle is 1 °~10 ° inclined-plane.It is moving and become 15 °~30 ° trapezoidal chute and trapezoidal draw runner with central axis that body and wing are provided with the guide knife wing slip.The driving ring arm is provided with the nozzle that becomes 10 °~30 ° of angles with horizon.Piston and driving ring are provided with the tap hole that locating piece guarantees both and align when mounted.The driving ring lock dog is locked together driving ring and piston, and wing cutting structure has up and down all been arranged cutting teeth, and middle guarantor's path portion is equipped with the hard alloy blocks of different size.

The utility model compared with prior art, the advantage and the effect that have are: 1, utilize the guiding of trapezoidal chute to open and regain wing, the functional reliability height can reduce the generation of opening and occurring the stuck problem of wing when regaining; 2, nozzle is convenient to clean, cool off wing along with wing moves together, reduces the probability that mud drum appears in wing, improves the life-span of instrument and the efficient of drilling well; 3, in the process of downward reaming hole, wing is remaining maximum expansion state under pressure reduction and the effect of rock power, guarantee reaming hole rate and reaming hole quality; 4, when pressure reduction reaches certain value, it is that reamer just can be started working that wing just can be expanded, and has guaranteed the accuracy of reaming hole well fragment position; Only need the termination of pumping wing just can under spring action, reset when 5, need not work, easy to operate; 6, can also can work independently with boring reaming hole work; 7, the contact surface of locating snap ring and wing is the inclined-plane, can reduce the vibration of wing in the working angles.

Description of drawings

Fig. 1 is the structural representation of a kind of hydraulic pressure parallel slip of the utility model expanding drill-following reamer;

Fig. 2 is the A-A sectional view of Fig. 1.

Among the figure, 1. body, 2. axle, 3. loam cake, 4. loam cake is had strong market potential, 5. spring, 6. limited block, 7. locating snap ring, 8. wing, 9. driving ring, 10. driving ring lock dog, 11. pistons, 12. the shunting chamber, the short pin of 13. bottom end covers, 14. bottom end covers, 15. nozzles, 16. locating pieces, 17. piston tap holes.

The specific embodiment

As depicted in figs. 1 and 2, this uses novel a kind of hydraulic pressure parallel slip expanding drill-following reamer, mainly by body 1, axle 2, loam cake 3, loam cake have strong market potential 4, spring 5, locating snap ring 7, limited block 6, wing 8, driving ring 9, driving ring lock dog 10, piston 11, shunting chamber 12, the short pin 13 of bottom end cover, bottom end cover 14 are formed.Described axle 2 upper ends are by being threaded onto loam cake 3, and having strong market potential with loam cake between loam cake 3 and the body 14 is connected; Spring 5 is installed in loam cake 3 inside, and spring 5 lower ends are pressed on the locating snap ring 7; Limited block 6 is connected on the locating snap ring 7 by screw, and wing 8 is pressed between locating snap ring 7 and the driving ring 9, and wing 8 cooperates installation with body 1 by become 15 °~30 ° trapezoidal draw runner and trapezoidal chute with central axis; Locating snap ring 7 and driving ring 9 all are sleeved on the axle 2; Location when driving ring 9 and piston 11 are installed by locating piece 16, driving ring lock dog 10 is locked together driving ring 9 and piston 11, and driving ring 9 arms are provided with the nozzle 15 that becomes 10 °~30 ° of angles with horizon.When reamer was not worked, driving ring 9, piston 11 had been pressed under the effect of spring 5 on the distributary base of being made up of shunting chamber 12, bottom end cover 14.Shunting chamber 12 and bottom end cover 14 be by the screw thread relative fixed, sells 13 and be connected with lower cover is short between bottom end cover 14 and the body 1.

Operating principle of the present utility model:

As shown in Figure 1, when the contraction state of reamer when not working.Wing 8 is retracted in the wing window of body 1 under spring 5 effects of loam cake 3 inside, and piston 11 is pressed on bottom end cover 14 tops.In the time of reamer work, tap hole and the nozzle 15 of a part of drilling fluid on shunting chamber 12, piston 11, piston tap hole 17 and driving ring 9 enters annular space.Another part flows through shunting chamber 12, flows to lower drilling string, acts on drill bit, cleans drill bit.After discharge capacity increased, the pressure reduction that acts on the piston 11 increased, and promoted piston 11 and moved up, and piston 11 promotes driving ring 9 and together moves upward, and just under the promotion of driving ring 9, the trapezoidal chute on body 1 makes progress, outwards opens wing 8.Locating snap ring 7 also moves upward and compresses spring 5, contacts with body 1 until the limited block 6 that is installed on the locating snap ring 7, begins spacing.This moment, wing 8 opened up into maximum travel position.

Reduce pump pressure or termination of pumping, the pressure reduction that acts on the piston reduces, and under the effect of spring 5 restoring forces, promotion locating snap ring 7, limited block 6, wing 8, drive block 9, driving ring lock dog 10, piston 11 move downward, and are recovered to initial position until wing 8.

Claims (4)

1. hydraulic pressure parallel slip expanding drill-following reamer, mainly form by body (1), loam cake (3), spring (5), axle (2), locating snap ring (7), limited block (6), wing (8), driving ring (9), piston (11), shunting chamber (12), bottom end cover (14), it is characterized in that: described axle (2) upper end is by being threaded onto loam cake (3), between loam cake (3) and the body (1) with loam cake have strong market potential (4) be connected; Spring (5) is installed in loam cake (3) inside, and spring (5) lower end is pressed on the locating snap ring (7), and limited block (6) is connected on the locating snap ring (7) by screw; Wing (8) is pressed between locating snap ring (7) and the driving ring (9), is provided with the fenestra of dress wing (8) on the body (1); Driving ring (9), piston (11) are being pressed under the effect of spring (5) on the distributary base of being made up of shunting chamber (12), bottom end cover (14); Shunting chamber (12) and bottom end cover (14) be by the screw thread relative fixed, is connected with short sell (13) of lower cover between bottom end cover (14) and the body (1).
2. hydraulic pressure parallel slip expanding drill-following reamer according to claim 1 is characterized in that: locating snap ring (7) is that the inclination angle is 1 °~10 ° inclined-plane with the contact surface of wing (8).
3. hydraulic pressure parallel slip expanding drill-following reamer according to claim 1 is characterized in that: it is moving and become 15 °~30 ° trapezoidal chute and trapezoidal draw runner with central axis that body (1) and wing (8) are provided with the guide knife wing slip.
4. hydraulic pressure parallel slip expanding drill-following reamer according to claim 1 is characterized in that: driving ring (9) arm is provided with the nozzle (15) that becomes 10 ° of 30 ° of angles with horizon.
CN201020549680XU 2011-02-24 2011-02-24 Hydraulic parallel-slippage expanding reamer while drilling CN202081824U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201020549680XU CN202081824U (en) 2011-02-24 2011-02-24 Hydraulic parallel-slippage expanding reamer while drilling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201020549680XU CN202081824U (en) 2011-02-24 2011-02-24 Hydraulic parallel-slippage expanding reamer while drilling

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CN202081824U true CN202081824U (en) 2011-12-21

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102635312A (en) * 2012-04-24 2012-08-15 西南石油大学 Hydraulic telescoping rigid support reaming-while-drilling tool
CN102654024A (en) * 2012-03-13 2012-09-05 中国海洋石油总公司 Hydraulic chambering device for drilling
CN104481404A (en) * 2014-10-15 2015-04-01 西南石油大学 Supporting-rod two-blade large-diameter changing reaming tool
CN104747082A (en) * 2013-12-31 2015-07-01 中国石油化工集团公司 Hydraulic expansion type reamer while drilling
CN104747086A (en) * 2013-12-31 2015-07-01 中国石油化工集团公司 Double-step self-locked while-drilling reamer blade
CN105089502A (en) * 2014-05-14 2015-11-25 中国石油天然气股份有限公司 Variable-diameter back reaming device and process method
CN105888558A (en) * 2016-06-17 2016-08-24 王岳 Downhole hole opener
CN107035334A (en) * 2017-02-24 2017-08-11 西南石油大学 It is a kind of with drilling through well instrument

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102654024A (en) * 2012-03-13 2012-09-05 中国海洋石油总公司 Hydraulic chambering device for drilling
CN102654024B (en) * 2012-03-13 2014-10-01 中国海洋石油总公司 Hydraulic chambering device for drilling
CN102635312A (en) * 2012-04-24 2012-08-15 西南石油大学 Hydraulic telescoping rigid support reaming-while-drilling tool
CN102635312B (en) * 2012-04-24 2014-10-01 西南石油大学 Hydraulic telescoping rigid support reaming-while-drilling tool
CN104747082A (en) * 2013-12-31 2015-07-01 中国石油化工集团公司 Hydraulic expansion type reamer while drilling
CN104747086A (en) * 2013-12-31 2015-07-01 中国石油化工集团公司 Double-step self-locked while-drilling reamer blade
CN105089502A (en) * 2014-05-14 2015-11-25 中国石油天然气股份有限公司 Variable-diameter back reaming device and process method
CN104481404A (en) * 2014-10-15 2015-04-01 西南石油大学 Supporting-rod two-blade large-diameter changing reaming tool
CN105888558A (en) * 2016-06-17 2016-08-24 王岳 Downhole hole opener
CN107035334A (en) * 2017-02-24 2017-08-11 西南石油大学 It is a kind of with drilling through well instrument
CN107035334B (en) * 2017-02-24 2019-10-18 四川省威沃敦化工有限公司 One kind is with drilling through well tool

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20111221

Termination date: 20150224

EXPY Termination of patent right or utility model