CN101205796B - Device for drilling big borehole with small drill head - Google Patents

Device for drilling big borehole with small drill head Download PDF

Info

Publication number
CN101205796B
CN101205796B CN 200610167443 CN200610167443A CN101205796B CN 101205796 B CN101205796 B CN 101205796B CN 200610167443 CN200610167443 CN 200610167443 CN 200610167443 A CN200610167443 A CN 200610167443A CN 101205796 B CN101205796 B CN 101205796B
Authority
CN
Grant status
Grant
Patent type
Prior art keywords
sub
water
drill
bent
power
Prior art date
Application number
CN 200610167443
Other languages
Chinese (zh)
Other versions
CN101205796A (en )
Inventor
杜晓瑞
Original Assignee
杜晓瑞
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Abstract

The invention discloses a device which uses a small drill bit to drill a large wellbore, comprising a water power bent sub and a locator sub, wherein, the locator sub is used for controlling vertical movement of a piston of the water power bent sub, so that curvature degree of the water power bent sub is controlled; due to the effect of the locator sub, the water power bent sub gives play to bending under the pumping condition and is not bended under the condition of termination of pumping, thereby direct hole enlargement along with a general drill bit during the drilling process can be realized, and a pumping termination trip can not be blocked. An enlarged hole diameter value can be adjusted and set on the ground in advance and judgment is made whether a set enlarged hole diameter is reached through a side water passage. The invention has the advantages of simple structure, convenient and reliable use and capability of being used for various wellbore sizes.

Description

小钻头钻大井眼装置 Small large hole drill bit means

技术领域 FIELD

[0001] 本发明涉及一种小钻头钻大井眼装置,主要用于石油天然气钻井工程中用常规钻进小钻头,钻出比所用钻头直径大的井眼。 [0001] The present invention relates to a small-large hole drill bit means, primarily for oil and gas drilling with conventional drilling smaller bits, a drill bit larger than the diameter drilled borehole used.

背景技术 Background technique

[0002] 在石油天然气钻井工程中由于工艺上的限制和特殊需要,有时要用小钻头钻出一个井眼,然后再用大的钻头或扩孔器去扩眼,以满足下套管固井预防卡钻或继续加深井的需要,这样存在的问题是延误施工时间,几乎等于重新又钻一次,增加大量投资,并且往往风险大,事故的机遇多。 [0002] In the oil and gas drilling due to limitations and special needs of the process, sometimes use a small bit to drill a borehole, then use a large drill bit or a reamer to the reamer, to meet the lower casing cementing prevent sticking or need to continue to add deep, so the problem is delays in construction time, almost equal to the drill again and again, increasing the substantial investment, and often risky, and more opportunities for accidents.

发明内容 SUMMARY

[0003] 本发明的目的就是提供一种小钻头钻大井眼装置,以解决现有技术中使用大小直径的钻头钻井和扩井而导致的延误施工时间,增加大量投资事故风险的问题。 [0003] The present invention is to provide a small drill bit large hole means to address delays in construction time in the prior art the size of the diameter of the drill bit and drilling wells caused by expansion, increasing the risk of accidents substantial investment issues.

[0004] 本发明的技术方案是:包括水力弯接头及其上接头,在所述的水力弯接头的上端连接有定位接头,该定位接头包括外壳、内套、弹簧、中间套、弹子,外壳的下端与所述的水力弯接头上接头的上端连接,在该外壳内的中下部装有中间套,在该中间套内的上部装有内套,在所述的中间套的顶端与内套的上端之间装有弹簧,该内套的下端顶在中间套下部的台阶上;所述的中间套的下部向下伸入所述的水力弯接头的上接头内;在所述的中间套壁孔内装有弹子,在所述的外壳内侧和内套的外侧分布设有与该弹子对应的环形凹槽轨道;在所述的外壳与中间套之间设有限位机构;在所述的内套上设有内外相通的侧水眼。 [0004] aspect of the present invention is: a hydraulic bending joints and the joint at the upper end of the bent sub connected to hydraulic connector positioning, the positioning joint comprising a housing, inner sleeve, the spring, the intermediate sleeve, the balls, the housing an upper connector connecting the lower end of the hydraulic bent sub, the lower part of the housing with the intermediate sleeve, inner sleeve fitted in an upper portion of the intermediate sleeve, said intermediate sleeve and the inner sleeve to the top spring fitted between the upper end, a lower end of the inner sleeve on top of the lower portion of the stepped intermediate sleeve; a lower portion of said intermediate sleeve extending into said downwardly bent hydraulic fitting the inner fitting; in said intermediate sleeve pin with the hole wall, the pin is provided with corresponding annular groove in the outer rail and the inner profile of the housing inside said sleeve; a stopper mechanism provided between the housing and the intermediate casing; within the sleeve is provided with inner and outer side of the water hole communicating.

[0005] 本发明的优点是:实现用常规钻进小钻头,钻出比所用钻头直径大的井眼。 Advantages [0005] of the present invention are: to achieve a small conventional drilling bit to drill the borehole diameter larger than the drill bit used. 结构简单,使用性能可靠,扩大井径可调;起钻下钻不会造成阻卡;随钻正常钻井时钻头直接扩大井径,节省时间,促进井下安全;工具使用寿命长,不额外增加费用;侧水眼可帮助判断水力弯接头弯曲角度是否达到了要求的斜度,帮助了解扩大井眼的可靠性。 Simple structure, reliable performance, expanded caliper adjustable; tripping drill without causing hindrance card; expand direct drill hole diameter when drilling to normal drilling, save time, promote mine safety; long tool life, no additional costs ; eye-side water can help determine the bending angle of the bent sub hydraulic whether the slope required to help understand the expansion of the reliability of the wellbore.

附图说明 BRIEF DESCRIPTION

[0006] 图1是本发明上部结构的半剖视示意图; [0006] FIG. 1 is a half cross-sectional view showing the upper structure of the present invention;

[0007] 图2是本发明下部结构的剖视示意图; [0007] FIG. 2 is a schematic cross-sectional view of a lower structure of the present invention;

[0008] 图3是本发明在应用时总体结构示意图。 [0008] FIG. 3 is a general schematic configuration of the present invention when applied.

[0009] 附图标记说明:1定位接头外壳;2定位接头内套;3定位接头弹簧;4定位接头中间套;5定位接头弹子;6限位销;7水力弯接头上接头;8活塞;9顶杆;10转轴;11中心管; 12下接头;13密封;14控制咀;15侧水眼;16垫子。 [0009] REFERENCE NUMERALS: positioning the connector housing 1; 2 sets of landing nipple; linker spring 3 is positioned; 4 positioned intermediate sleeve joint; positioning the joint ball 5; 6 stopper pin; bent sub hydraulic joint 7; 8 of the piston; jack 9; 10 shaft; 11 pipe; lower joint 12; a sealing 13; 14 controls the nozzle; eye-side water 15; 16 mat.

具体实施方式 detailed description

[0010] 参见图1和图2,本发明由定位接头B和水力弯接头C两部分组成。 [0010] Referring to Figures 1 and 2, the present invention consists of positioning the joint B and joint C two hydraulic bending portion. 其中: among them:

[0011] 定位接头B包括外壳1、内套2、弹簧3、中间套4、弹子5,外壳1的下端与所述的水力弯接头C上接头7的上端连接,在该外壳1内的中下部装有中间套4,在该中间套4内的上部装有内套2,在所述的中间套4的顶端与内套2的上端之间装有弹簧3。 [0011] Connector B comprises positioning a housing 1, the inner sleeve 2, the spring 3, the intermediate sleeve 4, pin 5, a bent sub hydraulic connectors on the lower end of the casing C 1 and the upper end 7 is connected to the housing 1 in the with a lower portion of the intermediate sleeve 4, inner sleeve 2 fitted in the upper portion 4 of the intermediate sleeve, the intermediate sleeve and the inner sleeve 4 to the top of the spring 3 fitted between the upper end 2. 该内套2的下端顶在中间套4下部的台阶上,所述的中间套4的下部向下伸入所述的水力弯接头C的上接头7内。 On the lower end fitting of the inner sleeve 2 on top of the lower portion of the stepped sleeve 4 intermediate, said intermediate sleeve extending into the lower portion 4 of said hydraulic downwardly bent sub in C 7. 在所述的中间套4壁孔内装有弹子5,在所述的外壳1内侧和内套2的外侧分布设有与该弹子5对应的环形凹槽轨道17和18,弹子5可以在三三者间活动,但不会脱落;在所述的外壳1与中间套4之间设有限位机构。 In said intermediate sleeve 4 with pin bore walls 5, is provided on the outside of the inner profile of the housing 1 and the inner sleeve 2 and the ball 5 corresponds to the annular groove tracks 17 and 18, the balls 5 can thirty-three activities between, but will not fall off; in said housing 1 between a limiting means 4 and the intermediate sleeve. 在所述的内套2上设有内外相通的侧水眼15,其作用是通过泵压变化,帮助判断水力弯接头弯曲度是否达到要求的弯曲度。 Communicating with the inner and outer side of the water hole 15 in the inner sleeve 2, which role is to change the pump pressure, the hydraulic bending joints help determine whether the degree of curvature of the required bend.

[0012] 所述的限位机构包括设在所述的中间套4外侧的限位槽,以及设在外壳上的限位销6,该限位销6的内端延伸至所述的限位槽内。 Stopper mechanism [0012], wherein said intermediate comprises a sleeve disposed outside of the limiting groove 4, and a stopper pin provided on the housing 6, the stopper pin 6 extends to the inner end of the stopper slot.

[0013] 所述的水力弯接头C包括上接头7、活塞8、顶杆9、转轴10、中心管11、下接头12、 密封13、控制咀14和垫子16。 [0013] The hydraulic connector C includes an upper curved joint 7, piston 8, the plunger 9, the rotation shaft 10, center tube 11, the joint 12, the seal 13, the control pad 16 and the nozzle 14. 活塞8密封滑动地安装在所述的上接头7下部的缩口内,该活塞8的上端与所述的定位接头B的中间套4的下端相邻。 7 the lower portion of the upper joint necking piston 8 slidably mounted in the seal of the piston is positioned intermediate the upper end B of the joint of the lower end 4 of the sleeve 8 adjacent. 该活塞8的一侧与滑动设置在上接头7外侧的顶杆9上端连接,该顶杆9的下端顶在通过转轴10连接在所述的上接头7 下端的下接头12的上端。 The side of the piston and the slide 8 is provided at the upper end of the outer plunger 7 is connected to the joint 9, the lower end of the jack 9 at the upper end by a top shaft 10 is connected to the upper fitting at the lower end 12 of the connector 7. 在贯穿于所述的活塞8的下部至下接头12的轴心孔内设有中心管11,在该中心管11与下接头12之间设有密封13。 Fitting in an axial hole 12 through the piston to the lower portion 8 provided with a central tube 11 to the lower tube 11 and the lower joint 12 between the seal 13 is provided at the center. 在活塞8的上端的中心孔内装有控制咀14,在活塞8的下端装有垫子16。 In the center of the upper end of the control piston 8 with the nozzle bore 14, the lower end of the piston 16 with cushion 8.

[0014] 本发明在应用时连接在钻具的上端,其工作原理是: [0014] Application of the present invention is connected to the upper end at the drill, its working principle is:

[0015] 水力弯接头C的结构与已有专利(专利号ZL01218484. 5)基本相同,其作用是在活塞8受水力推动时,活塞8下行,活塞又联动推杆9,推动下接头12的上端台阶,下接头12围绕转轴10旋转,产生一定的偏斜角度,改变了钻头前进的方向。 [0015] Hydraulic structures and bent subs C prior patent (Patent No. ZL01218484. 5) is substantially the same, which is in effect when the hydraulic piston 8 driven by the piston 8 downward, the piston 9 and ram linkage, pushing the lower joint 12 upper step, lower joint 10 about a rotation axis 12, a certain skew angle, changing the direction of the drill forward. 使钻具每转一周产生一定的扩大井眼直径。 The drill per revolution have some expansion of the borehole diameter week.

[0016] 本发明是在水力弯接头C上加一个定位接头B,工具下入井内,开泵条件下,水力弯接头活塞8中控制咀14有阻力推动活塞8下行,定位接头的中间套4也随之下行,此时, 定位接头弹子5进入定位接头外壳1内侧的横向凹槽轨道18内(图1所示的位置),而此时定位接头内套2也在水力压力下压缩弹簧3,把弹子5限制在外壳1和中间套4之间,使中间套不再会发生上下移动。 [0016] The present invention is to add a landing nipple B on the hydraulic elbow connector C, down into the well under the tool, a pump conditions, hydraulic bending joint 8 control piston nozzle 14 has a resistance of pushing the piston 8 downward, intermediate positioning joint sleeve 4 downlink will also, at this time, the positioning pin 5 into the joint (the position shown in FIG. 1) transverse groove track 1 is positioned inside the connector housing 18, while the sleeve 2 also at this time the hydraulic force of the compression spring 3 is positioned within the joint , the restriction pin 5 between the housing 1 and the intermediate sleeve 4, the vertical movement of the intermediate sleeve no longer occur. 这样,使水力弯接头的活塞8也限制在被压缩后的位置而不会移动。 Thus, the bent sub so that the hydraulic piston 8 is also limited in the compressed position does not move. 从而保持了水力弯接头下接头12的偏斜角度不变而实现扩大钻进并眼的目的。 Thus maintaining the skew angle of 12 hydraulic joints under constant bending joints to achieve the purpose of expanding drilling and eye. 但当停泵时,定位接头内套2靠弹簧3的作用弹到的最高位置。 But when the pump stops, the positioning joint cover 2 uppermost position against the elastic action of the spring to 3. 此时,恰好定位接头内套2 对准定位接头中间套4的弹子5。 In this case, the inner joint sleeve 2 is positioned just positioned in alignment with the joint ball 54 of the intermediate sleeve. 由于弹子5可以进入定位接头内套2的凹槽轨道17内, 所以,弹子5向内活动,定位接头中间套4即可向上移动,使水力弯接头C恢复拉直状态,这样就不会造成起下钻的阻卡。 Since the pin 17 into the recess 5 may be positioned within the track joint cover 2, so that the balls 5 activity inwardly positioned intermediate joint sleeve 4 can be moved upward, so that the hydraulic recovery straightened state bending joints C, so as not to cause tripping barrier card. 其扩大井眼的大小,可事先在地面调整活塞下的垫子16的厚度,以控制顶杆下行距离和水力弯接头的最大转动角度。 Wellbore its expanded size, can be adjusted in advance at a mat thickness of the piston 16 on the ground, in order to control the maximum angle of rotation of the hydraulic jack and downstream from the bent sub. 获得扩大并径的效果。 Obtain and expand the diameter of results. 在定位接头B上应加接一支常规使用的扶正器A (参见图3),有利于扩大井径。 B is positioned on the joint should be affixed a centralizer A conventionally used (see FIG. 3), and expand caliper.

4 4

Claims (3)

  1. 1. 一种小钻头钻大井眼装置,包括水力弯接头(C)及其上接头(7),其特征在于:在所述的水力弯接头(C)的上端连接有定位接头(B),该定位接头(B)包括外壳(1)、内套O)、 弹簧(3)、中间套、弹子(5),外壳(1)的下端与所述的水力弯接头(C)上接头(7)的上端连接,在该外壳(1)内的中下部装有中间套G),在该中间套内的上部装有内套0), 在所述的中间套(4)的顶端与内套(2)的上端之间装有弹簧(3),该内套(2)的下端顶在中间套(4)下部的台阶上;所述的中间套的下部向下伸入所述的水力弯接头(C)的上接头⑵内;在所述的中间套⑷壁孔内装有弹子(5),在所述的外壳⑴内侧和内套(2)的外侧分布设有与该弹子(¾对应的环形凹槽轨道;在所述的外壳(1)与中间套(4)之间设有限位机构;在所述的内套⑵上设有内外相通的侧水眼(15);所述的水力弯接 A small drill bit large wellbore apparatus comprising a hydraulic elbow connector (C) and the joint (7), wherein: positioning the joint connection (B) at the upper end of the hydraulic bent sub (C), and the landing nipple (B) comprises a housing (1), the inner sleeve O), spring (3), the intermediate sleeve, the balls (5), the lower end of the housing (1) with said hydraulic bent sub (C) linker (7 ) upper end is connected to the housing (lower part) in the intermediate sleeve with G 1), the intermediate sleeve is provided with an upper portion of the inner sleeve 0), (4) and the inner sleeve in the distal end of the intermediate sleeve spring-loaded between the upper end (2) (3), the lower end of the inner sleeve (2) on the top (4) of the lower portion of the stepped intermediate sleeve; a lower portion of said intermediate sleeve extending into said downwardly curved water ⑵ the upper joint connection (C); and in the middle of the wall of the sleeve bore with ⑷ pin (5), located outside the housing and an inner ⑴ inner sleeve (2) is provided (corresponding to the pin ¾ the annular groove track; in said housing (1) and the intermediate sleeve (4) is provided between the stopper means; communication with the inner and outer side of the water hole (15) on said inner sleeve ⑵; said hydraulic bending pick (C)包括活塞(8)、顶杆(9)、转轴(10)、中心管(11)、下接头(12)、 密封(1¾和控制咀(14),活塞(8)滑动安装在所述的上接头(7)下部的缩口内,该活塞(8) 的上端与所述的定位接头(B)的中间套的下端相邻;该活塞(8)的一侧与滑动设置在上接头(7)外侧的顶杆(9)上端连接,该顶杆(9)的下端顶在通过转轴(10)连接在所述的上接头(7)下端的下接头(1¾的上端;在活塞(8)的上端的中心孔内装有控制咀(14), 在贯穿于所述的活塞(8)的下部至下接头(12)的轴心孔内设有中心管(11),在该中心管(11)与下接头(12)之间设有密封(13)。 (C) comprises a piston (8), a jack (9), the shaft (10), the central tube (11), the joint (12), the seal (1¾ and a control nozzle (14), a piston (8) slidably mounted on the said upper inner joint (7) a lower necking, the intermediate joint of the positioning piston (8) with said upper end (B) adjacent the lower end of the sleeve; the piston (8) is slidably disposed on the side of the joint (7) outside the jack (9) connected to an upper end, a lower end of the jack (9) connected at a top by said spindle (10) on the fitting (7) at the lower end of the joint (upper 1¾; a piston ( the center of the upper end 8) of the nozzle bore with a control (14), a lower portion of said piston through (8) to the lower joint (12) is provided with a central axial bore of the tube (11), in the central tube a seal (13) between (11) and the lower joint (12).
  2. 2.根据权利要求1所述的小钻头钻大井眼装置,其特征在于:所述的限位机构包括设在所述的中间套⑷外侧的限位槽,以及设在外壳⑴上的限位销(6),该限位销(6)的内端延伸至所述的限位槽内。 The drill bit of claim 1 small drill large wellbore apparatus as claimed in claim, wherein: said limiting means comprises a sleeve provided on the outer side of said intermediate ⑷ limiting slot, disposed in the housing and limit ⑴ pin (6), the inner end of the stopper pin (6) extending into the limiting slot.
  3. 3.根据权利要求1或2所述的小钻头钻大井眼装置,其特征在于:在所述的活塞(8)的下端装有垫子(16)。 The small drill bit of claim 1 or claim 2 large borehole drilling apparatus, wherein: the lower end of the piston (8) is provided with cushion (16).
CN 200610167443 2006-12-20 2006-12-20 Device for drilling big borehole with small drill head CN101205796B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200610167443 CN101205796B (en) 2006-12-20 2006-12-20 Device for drilling big borehole with small drill head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200610167443 CN101205796B (en) 2006-12-20 2006-12-20 Device for drilling big borehole with small drill head

Publications (2)

Publication Number Publication Date
CN101205796A true CN101205796A (en) 2008-06-25
CN101205796B true CN101205796B (en) 2011-06-01

Family

ID=39566247

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200610167443 CN101205796B (en) 2006-12-20 2006-12-20 Device for drilling big borehole with small drill head

Country Status (1)

Country Link
CN (1) CN101205796B (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3903974A (en) 1974-03-12 1975-09-09 Roy H Cullen Drilling assembly, deviation sub therewith, and method of using same
US4319649A (en) 1973-06-18 1982-03-16 Jeter John D Stabilizer
CN2126305U (en) 1992-05-16 1992-12-30 四川省地质矿产局二○八水文地质工程地质队 Plug-in type eccentric borehole-enlarging drilling device
CN2175303Y (en) 1993-05-28 1994-08-24 焦玉贞 Hydraulic impacting device for drilling machine
US6213226B1 (en) 1997-12-04 2001-04-10 Halliburton Energy Services, Inc. Directional drilling assembly and method
CN2485818Y (en) 2001-06-05 2002-04-10 陈正治 Pustproof waterproof wire catcher for connector
CN2658371Y (en) 2003-11-14 2004-11-24 中国石化集团胜利石油管理局黄河钻井总公司管具公司 Integral amplifier
CN1791732A (en) 2003-05-21 2006-06-21 国际壳牌研究有限公司 Drill bit and drilling system with underreamer- and stabilisation-section

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4319649A (en) 1973-06-18 1982-03-16 Jeter John D Stabilizer
US3903974A (en) 1974-03-12 1975-09-09 Roy H Cullen Drilling assembly, deviation sub therewith, and method of using same
CN2126305U (en) 1992-05-16 1992-12-30 四川省地质矿产局二○八水文地质工程地质队 Plug-in type eccentric borehole-enlarging drilling device
CN2175303Y (en) 1993-05-28 1994-08-24 焦玉贞 Hydraulic impacting device for drilling machine
US6213226B1 (en) 1997-12-04 2001-04-10 Halliburton Energy Services, Inc. Directional drilling assembly and method
CN2485818Y (en) 2001-06-05 2002-04-10 陈正治 Pustproof waterproof wire catcher for connector
CN1791732A (en) 2003-05-21 2006-06-21 国际壳牌研究有限公司 Drill bit and drilling system with underreamer- and stabilisation-section
CN2658371Y (en) 2003-11-14 2004-11-24 中国石化集团胜利石油管理局黄河钻井总公司管具公司 Integral amplifier

Also Published As

Publication number Publication date Type
CN101205796A (en) 2008-06-25 application

Similar Documents

Publication Publication Date Title
US5906239A (en) Jarring tool
US7191841B2 (en) Expansion pig
US6253852B1 (en) Lateral branch junction for well casing
US5148876A (en) Lightweight drill pipe
US7373995B2 (en) Method and apparatus for drilling curved boreholes
US7287603B2 (en) Combined casing expansion/casing while drilling method and apparatus
US6607046B1 (en) Expandable drill bit
CN101338663A (en) Horizontal well mechanical staged fracturing blocking-proof process pipe column
CN1948702A (en) Well drilling method of multibranch well
CN200968195Y (en) Permanent type sealing anchoring packer
CN201031662Y (en) Down-hole controllable type boring tool by-pass valve
CN201460778U (en) Expansion pipe type tail pipe hanger
CN1508380A (en) Ultrashort curvature leve well drilling and completion method and apparatus thereof
CN101748970A (en) Ultra-short radius radial well-drilling tool system
CN102747974A (en) Well drilling vibrator of horizontal well
CN2851503Y (en) Hydraulic automatic anti-deflection drilling tools
CN201141287Y (en) Minute borehole hydropower presser
CN101614117A (en) Expansion tube type liner hanger
CN201031634Y (en) Radial variable casing tube centralizer
CN2835532Y (en) Whipstock anchoring device
CN201202423Y (en) Multifunctional hanging device
CN201428417Y (en) Pressure-balancing set packer
CN1414207A (en) Oil field branching well reentry device
CN2864079Y (en) Locating device for naked eye sub-well oblique machine
CN201110143Y (en) Fluid pressure tailpiece hanger

Legal Events

Date Code Title Description
C06 Publication
C10 Request of examination as to substance
C14 Granted
C17 Cessation of patent right