WO2019144507A1 - Outil de fond de trou mécanique pour forage de puits vertical à l'aide d'une came à vis - Google Patents

Outil de fond de trou mécanique pour forage de puits vertical à l'aide d'une came à vis Download PDF

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Publication number
WO2019144507A1
WO2019144507A1 PCT/CN2018/082585 CN2018082585W WO2019144507A1 WO 2019144507 A1 WO2019144507 A1 WO 2019144507A1 CN 2018082585 W CN2018082585 W CN 2018082585W WO 2019144507 A1 WO2019144507 A1 WO 2019144507A1
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WIPO (PCT)
Prior art keywords
connecting rod
cam
screw
sleeve
seat
Prior art date
Application number
PCT/CN2018/082585
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English (en)
Chinese (zh)
Inventor
田家林
黎根银
杨琳
Original Assignee
西南石油大学
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Filing date
Publication date
Application filed by 西南石油大学 filed Critical 西南石油大学
Publication of WO2019144507A1 publication Critical patent/WO2019144507A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • E21B7/10—Correction of deflected boreholes
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/02—Fluid rotary type drives
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/20—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/003—Bearing, sealing, lubricating details
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/04—Electric drives
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/10—Geothermal energy

Definitions

  • the present invention relates to a downhole tool for oil drilling, and more particularly to a mechanical downhole tool for vertical drilling using a screw cam.
  • Straight drilling technology has an important role in improving the drilling speed of deep wells, ultra-deep wells and various complex structural wells to ensure downhole safety, and the vertical drilling technology is obtained with the increase of deep wells and ultra-deep wells. Rapid development and application. In recent years, with the rapid development and application of directional drilling technology, vertical drilling technology has made great progress on the basis of the traditional anti-slanting fast theory and technology.
  • the directional guiding tool is anti-slanting fast technology, which can open the rotary drill straight shaft (steady slope) and directional correction.
  • the steerable drilling tool is a combination of downhole power drills with single or double curved housings and stabilizers.
  • the actual rotation speed of the drill bit is the sum of the output speed of the screw drill and the rotation speed of the turntable.
  • the stable inclined well section can be drilled; when the well inclination needs to be corrected, the operation can be performed in a directional manner.
  • Anti-clock pendulum drill combination anti-slanting fast technology, off-axis drilling tool is limited by its mechanism, mainly a kind of stable-slanting tool, the down-slope characteristic is second, and it has enough deformation space to achieve the expected deformation requirements. Therefore, its anti-slanting characteristics are greatly reduced in the small wellbore.
  • the anti-clock pendulum assembly anti-slanting technology came into being, which on the one hand showed sufficient strong ability to reduce the inclination; on the other hand, it still had a good effect of lowering the slope in the application of the small wellbore.
  • the present invention provides a solution to the problem of well inclination caused by formation factors and technical reasons during vertical well drilling operations in the prior art, resulting in low drilling efficiency, high drilling cost, and long drilling cycle.
  • a mechanical downhole tool that uses a screw cam to achieve vertical drilling.
  • the mechanical downhole tool for vertical drilling by using the screw cam is composed of a motor assembly, a cardan shaft assembly and a twisting assembly, and the front end of the motor assembly is connected with the universal joint assembly, and the universal joint shaft is always The front end is connected to the twisting assembly;
  • the motor assembly includes an upper joint, an anti-locking nut, an anti-drop link, a stator housing, a rubber bushing and a screw rotor, and the upper joint is connected with the stator housing through a thread to prevent it from falling off
  • the rear end of the connecting rod is connected with the anti-locking nut, the front end is connected with the screw rotor, the rubber bushing is installed inside the stator housing to form a screw stator, and the screw rotor and the screw stator are meshed with each other;
  • the universal joint shaft assembly comprises a live strand and a ball Seat, transmission ball, pressure ball, sealing ring a, locking sleeve, sealing sleeve, universal joint shaft connecting rod, universal
  • the correction assembly includes a seal ring, a center tube, a sealing ring b, a bearing a, a roller seat, a roller, a screw a, a biasing sleeve, and a cam , cam cover outer ring, screw b, cam cover inner ring, spring, spring seat, pin a, pin b, connecting rod seat, ball joint, connecting rod a, roller, cylindrical pin, hinge pin, connecting rod b, bearing b , the sleeve, the bearing c and the lower joint, the roller is mounted on the roller seat by the screw a, the ball hinge is mounted on the bottom of the cam through the outer ring of the cam cover, the screw b and the inner ring of the cam cover, and the connecting rod seat is fixed on the bearing b From top to bottom, the bearing a, the roller seat, the cam, the spring, the spring seat, the bearing the bearing a
  • the mechanical downhole tool for realizing vertical drilling by using a screw cam is characterized in that: a sleeve pin hole is opened at a circumferential center of the middle and lower portions of the heavier side of the heavier sleeve, and the sleeve pin is away from the sleeve pin.
  • a connecting rod expansion port is opened at a circumferential direction of the hole 180°, and the connecting rod a and the connecting rod b can be expanded and contracted through the connecting rod expansion port, and the upper and lower ends of the heavy-weight sleeve are provided with a sealing groove for placing the sealing ring;
  • the pin hole of the connecting rod seat on the rod seat is 180° apart from the circumferential direction of the mounting point of the connecting rod b, and the pin a connects the sleeve pin hole and the connecting rod pin hole to ensure that the connecting rod a and the connecting rod b are always on the biasing sleeve
  • the connecting rod expansion port is opposite.
  • the mechanical downhole tool for realizing vertical drilling by using a screw cam is characterized in that: the bottom of the cam is provided with an annular sliding groove, and the outer ring of the cam and the cam cover and the inner ring of the cam cover form an annular slide, the ball The hinge can be rotated around the cam in the annular slide.
  • the annular chute should be coated with grease; the right end of the connecting rod b is equipped with a roller, and the sliding friction between the drill and the well wall is rolling friction. Small work resistance.
  • the beneficial effects of the invention are as follows: (1) real-time sensing of well inclination by using the principle of partial weight, sensitive induction, rapid response, dynamic skew correction; (2) using cam and four-bar mechanism to realize the correcting principle of the tool, the structure is novel, It has theoretical research value and the possibility of further development and perfection; (3) the motor assembly of the tool does not generate axial pressure, high energy conversion efficiency, and short axial dimension; (4) the invention is a pure mechanical structure, does not contain Electromagnetic measuring components and high-pressure oil systems have stable performance and low cost.
  • FIG. 1 is a structural schematic view of a mechanical downhole tool connecting rod a and a connecting rod b in a state in which vertical drilling is performed by using a screw cam according to the present invention.
  • FIG. 2 is a schematic structural view of the mechanical downhole tool connecting rod a and the connecting rod b in a retracted state by using a screw cam to realize vertical drilling according to the present invention.
  • Figure 3 is a cross-sectional view taken along line A-A of Figure 1 of the present invention.
  • Figure 4 is a partial enlarged view of Part I of Figure 1 of the present invention.
  • Figure 5 is a three-dimensional schematic view of the roller seat, the roller and the cam structure.
  • Figure 6 is a three-dimensional view of the cam, cam cover inner ring and cam cover outer ring structure.
  • Figure 7 is a three-dimensional schematic view of the linkage mechanism.
  • Figure 8 is a three-dimensional view of the structure of the biased sleeve.
  • the mechanical downhole tool for vertical drilling using a screw cam is composed of a motor assembly, a universal joint assembly, and a twisting assembly.
  • the front end of the motor assembly is connected to the universal joint assembly, and the front end of the universal joint assembly.
  • the motor assembly comprises an upper joint 1, an anti-locking nut 2, an anti-drop link 3, a stator housing 4, a rubber bushing 5 and a screw rotor 6, and the upper joint 1 passes through the thread and the stator shell
  • the body 4 is connected, and the rear end of the anti-linking rod 3 is connected to the anti-locking nut 2, and the front end is connected to the screw rotor 6.
  • the rubber bushing 5 is mounted inside the stator housing 4 to form a screw stator, and the screw rotor 6 and the screw stator are meshed with each other.
  • the universal joint shaft assembly comprises a live strand 7, a ball seat 8, a transmission ball 9, a pressure ball 10, a sealing ring a11, a locking sleeve 12, a sealing sleeve 13, a cardan shaft connecting rod 14, a universal shaft shell
  • the tight sleeve 12 cooperates with the universal joint shaft 14 and the movable strand 7, and seals the inside of the movable strand 7 by the sealing ring a11 and the sealing sleeve 13.
  • the mounting structure of the universal joint shaft 14 is the same, and the universal joint housing 15 is behind.
  • the stator housing 4 is connected to the end, the rear end of the water cap 16 is connected to the movable strand 7, and the front end is connected to the transmission shaft 17.
  • the slanting assembly comprises a sealing ring 18, a central tube 19, a sealing ring b20, a bearing a21, a roller seat 22, a roller 23, a screw a24, a biasing sleeve 25, a cam 26, a cam cover outer ring 27, a screw b28, a cam Cover inner ring 29, spring 30, spring seat 31, pin a32, pin b33, link seat 34, ball joint 35, link a36, drum 37, cylindrical pin 38, hinge pin 39, connecting rod b40, bearing b41, sleeve
  • the cylinder 42, the bearing c43 and the lower joint 44, the roller 23 is mounted on the roller seat 22 by a screw a24, and the ball joint 35 is attached to the bottom of the cam 26 through the cam cover outer ring 27, the screw b28 and the cam cover inner ring 29, and the connecting rod
  • the seat 34 is fixed to the bearing b41, and the bearing a21, the roller seat 22, the cam 26, the spring 30, the spring seat 31, the bearing
  • the drum 37 is mounted on the right end of the link b40 through the cylindrical pin 38, and the link a36 is connected to the link b40 by the hinge pin 39. Then, the connecting rod a36 is connected to the lower end of the ball joint 35, and the connecting rod b40 is connected with the connecting rod base 34, and is densely connected in advance.
  • the sealing ring 18 and the sealing ring b20 are mounted on the biasing sleeve 25, and the biasing sleeve 25 is fitted on the bearing a21 and the bearing c43, and the connecting rod seat 34 is fixed on the biasing sleeve 25 by the pin a32, after the center tube 19
  • the end is screwed to the drive shaft 17, and the front end is screwed to the lower joint 44; during the drilling process, when the well inclination occurs, the heavier side of the bias sleeve 25 is automatically rotated to the wellbore by the bearing a21 and the bearing c43 under the action of gravity.
  • the low side drives the connecting rod seat 34 to rotate, so that the connecting rod a36 and the connecting rod b40 are always located at the high side of the wellbore, and the liquid energy is converted into the rotating mechanical energy by the motor assembly, and the central tube 19 is rotated, and the roller seat 22 follows the central tube.
  • 19 Synchronous rotation causes the cam 26 to reciprocate up and down, thereby driving the connecting rod a36 and the connecting rod b40 to continuously push the well wall, generating a periodic reaction force to correct the well inclination, achieving normal drilling, improving drilling efficiency; when the well inclination does not occur
  • the bias of the biasing sleeve 25 is random, so the automatic vertical drilling tool does not produce a constant side correction force and does not affect normal drilling.
  • a sleeve pin hole is opened at a circumferential center of the middle and lower portions of the heavier side of the heavy-weight sleeve 25, and a connecting rod expansion port is opened at a circumferential angle of 180° from the sleeve pin hole, and the connecting rod a36 and the connecting rod b40 can be Through the expansion and contraction port of the connecting rod, the upper and lower ends of the partial weight sleeve 25 are provided with a sealing groove for accommodating the sealing ring 18; the pin hole of the connecting rod seat on the connecting rod seat 34 is circumferentially spaced from the mounting point of the connecting rod b40 At 180°, the pin a32 connects the sleeve pin hole and the link pin hole to ensure that the link a36 and the link b40 are always opposite to the link expansion port on the weight sleeve 25.
  • the bottom of the cam 26 is provided with an annular sliding groove, and the cam 26 forms a slide with the cam cover outer ring 27 and the cam cover inner ring 29, and the ball hinge 35 can rotate circumferentially around the cam 26 in the slide, and should be ring-shaped before installation.
  • the tank is coated with grease; the right end of the connecting rod b40 is mounted with a drum 37, and the sliding friction between the variable drilling tool and the well wall is rolling friction, which reduces the working resistance.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

L'invention concerne un outil de fond de trou mécanique de forage vertical de puits à l'aide d'une came à vis, constitué d'un ensemble moteur, d'un ensemble arbre universel et d'un ensemble de redressement. L'extrémité avant de l'ensemble moteur est reliée à l'ensemble arbre universel, et l'extrémité avant de l'ensemble arbre universel est reliée à l'ensemble de redressement ; dans le processus de forage, lorsqu'un écart de puits se produit, le côté lourd d'un manchon de poids excentrique (25) est automatiquement tourné vers le côté bas d'un puits sous l'effet de la gravité, et entraîne un siège de tige de liaison (34) à tourner, de telle sorte qu'une tige de liaison a (36) et une tige de liaison b (40) peuvent être situées du côté haut du puits à tout moment ; de l'énergie liquide est convertie en énergie mécanique pour une rotation au moyen de l'ensemble moteur pour entraîner un tuyau central (19) en rotation ; un siège de rouleau (22) tourne de manière synchrone avec le tuyau central (19) pour permettre à une came (26) d'effectuer un mouvement de va-et-vient vertical, de telle sorte que la tige de liaison a (36) et la tige de liaison b (40) sont entraînées de manière à être poussées en continu vers la paroi de puits, de façon à générer une force de contre-action périodique pour redresser le puits, réalisant ainsi un forage normal. Ledit outil de fond de trou mécanique permet de redresser efficacement le puits, d'assurer la précision du forage vertical, d'améliorer l'efficacité de forage et la qualité de voie de puits, économisant ainsi les coûts de production.
PCT/CN2018/082585 2018-01-24 2018-04-10 Outil de fond de trou mécanique pour forage de puits vertical à l'aide d'une came à vis WO2019144507A1 (fr)

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Application Number Priority Date Filing Date Title
CN201810069334.2A CN108060896B (zh) 2018-01-24 2018-01-24 利用螺杆凸轮实现垂直钻井的机械式井下工具
CN201810069334.2 2018-01-24

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110630189A (zh) * 2019-09-30 2019-12-31 中信重工机械股份有限公司 一种钻具的变径导向器
CN111852358A (zh) * 2020-08-25 2020-10-30 重庆科技学院 一种多分支增产钻井增程爬行工具
CN112065280A (zh) * 2020-09-29 2020-12-11 山西风雷钻具有限公司 一种垂直钻井工具
CN116464390A (zh) * 2023-04-04 2023-07-21 中国地质大学（北京） 一种适用于极地冰层热融钻具的机械式纠斜系统
CN116607908A (zh) * 2023-07-20 2023-08-18 北京汉诺威自控技术有限公司 光杆结构
CN113585968B (zh) * 2021-06-25 2024-06-07 北京六合伟业科技股份有限公司 一种翼肋与井壁非接触推靠式垂直导向系统

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CN108756732B (zh) * 2018-08-02 2023-11-14 西南石油大学 基于螺杆与弹簧的周向冲击器
CN111677449B (zh) * 2020-08-11 2020-12-01 中煤科工集团西安研究院有限公司 煤矿井下水力加压回转定向螺杆钻具
CN113027341B (zh) * 2021-04-12 2022-04-05 西安石油大学 一种连续管钻井可调式螺杆减阻工具及调节方法

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CN104612582A (zh) * 2014-11-28 2015-05-13 西南石油大学 基于螺杆与双螺旋滚珠丝杆的井下振动冲击工具
CN105484668A (zh) * 2015-11-20 2016-04-13 西南石油大学 导向头偏转实现精确定位的新型旋转导向工具

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CN2851503Y (zh) * 2005-10-09 2006-12-27 中国石油大学(北京) 液压自动防斜钻具
CN201254952Y (zh) * 2008-04-22 2009-06-10 中国石化集团胜利石油管理局钻井工艺研究院 一种利用空气动力学的自动垂直钻井工具

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Publication number Priority date Publication date Assignee Title
FR2740508A1 (fr) * 1995-10-31 1997-04-30 Elf Aquitaine Stabilisateur realeseur pour le forage d'un puits petrolier
JP2012041775A (ja) * 2010-08-20 2012-03-01 Toa Tone Boring:Kk 掘削機の傾斜修正装置
CN104033113A (zh) * 2014-06-27 2014-09-10 西南石油大学 一种旋冲螺杆钻具
CN104612582A (zh) * 2014-11-28 2015-05-13 西南石油大学 基于螺杆与双螺旋滚珠丝杆的井下振动冲击工具
CN105484668A (zh) * 2015-11-20 2016-04-13 西南石油大学 导向头偏转实现精确定位的新型旋转导向工具

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110630189A (zh) * 2019-09-30 2019-12-31 中信重工机械股份有限公司 一种钻具的变径导向器
CN110630189B (zh) * 2019-09-30 2024-05-10 中信重工机械股份有限公司 一种钻具的变径导向器
CN111852358A (zh) * 2020-08-25 2020-10-30 重庆科技学院 一种多分支增产钻井增程爬行工具
CN111852358B (zh) * 2020-08-25 2024-03-19 重庆科技学院 一种多分支增产钻井增程爬行工具
CN112065280A (zh) * 2020-09-29 2020-12-11 山西风雷钻具有限公司 一种垂直钻井工具
CN113585968B (zh) * 2021-06-25 2024-06-07 北京六合伟业科技股份有限公司 一种翼肋与井壁非接触推靠式垂直导向系统
CN116464390A (zh) * 2023-04-04 2023-07-21 中国地质大学（北京） 一种适用于极地冰层热融钻具的机械式纠斜系统
CN116464390B (zh) * 2023-04-04 2023-09-15 中国地质大学（北京） 一种适用于极地冰层热融钻具的机械式纠斜系统
CN116607908A (zh) * 2023-07-20 2023-08-18 北京汉诺威自控技术有限公司 光杆结构
CN116607908B (zh) * 2023-07-20 2023-09-29 北京汉诺威自控技术有限公司 光杆结构

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