WO2004092532A1 - Outil de forage de fonde de trou a haute pression a jet continu et procede permettant de briser la roche - Google Patents

Outil de forage de fonde de trou a haute pression a jet continu et procede permettant de briser la roche Download PDF

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Publication number
WO2004092532A1
WO2004092532A1 PCT/CN2004/000352 CN2004000352W WO2004092532A1 WO 2004092532 A1 WO2004092532 A1 WO 2004092532A1 CN 2004000352 W CN2004000352 W CN 2004000352W WO 2004092532 A1 WO2004092532 A1 WO 2004092532A1
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WO
WIPO (PCT)
Prior art keywords
pressure
jet
turbine
pump
axial flow
Prior art date
Application number
PCT/CN2004/000352
Other languages
English (en)
Chinese (zh)
Inventor
Feng Jin
Zhonghou Shen
Weiqun Sun
Fangyuan Peng
Kexian Deng
Yang Shi
Jianjun He
Ren Pang
Original Assignee
Feng Jin
Zhonghou Shen
Weiqun Sun
Fangyuan Peng
Kexian Deng
Yang Shi
Jianjun He
Ren Pang
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
Application filed by Feng Jin, Zhonghou Shen, Weiqun Sun, Fangyuan Peng, Kexian Deng, Yang Shi, Jianjun He, Ren Pang filed Critical Feng Jin
Priority to CN200480010363.8A priority Critical patent/CN1774558B/zh
Priority to CA002555075A priority patent/CA2555075A1/fr
Publication of WO2004092532A1 publication Critical patent/WO2004092532A1/fr
Priority to US11/251,373 priority patent/US20060113114A1/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets

Definitions

  • the invention relates to a downhole high-pressure continuous flow jet drilling tool and a rock breaking method thereof. Background technique
  • Chinese utility model patent ZL96207357.1 discloses an ultra-high-pressure downhole pulse jet turbocharger.
  • the turbocharger is provided with a two-stage turbocharged progressive drilling tool.
  • a turbocharger is provided under the turbodrilling tool Hydraulic cylinder.
  • the drilling fluid enters the inlet of the hydraulic cylinder through the turbine, and after being pressurized by the hydraulic cylinder, a pulsating ultra-high pressure jet is ejected from the nozzle to break the rock. Jet pressure reaches 100-200Mpa
  • This pulsating jet turbocharger cannot provide continuous high-pressure jets, so rock breaking efficiency is low.
  • the hydraulic cylinder uses a gap seal, the particle size of the cuttings in the drilling fluid is required to be very small. Therefore, it is necessary to strictly filter the drilling fluid before entering the high pressure jet drilling tool.
  • the space in the cylinder barrel is isolated from the outside drilling fluid, so the pressurization efficiency is low and it is easy to damage.
  • U.S. Patent No. 4,819,745 discloses a pulse jet device for a drill pipe.
  • This device includes a turbine device, and a directional valve is arranged under the turbine device to close or open the outlet of the turbine device. The on and off formation of the pulse jet.
  • the pulsed jet device according to US Pat. No. 4,819,745 cannot provide a continuous flow of high-pressure rock breaking jets.
  • An object of the present invention is to provide a downhole high-pressure continuous flow jet drilling tool,
  • the drilling tool can generate a continuous flow of high-pressure jets downhole to achieve rock breaking and removal of cuttings, which can increase the drilling speed.
  • Another object of the present invention is to provide a downhole high-pressure continuous flow jet rock breaking method.
  • the high-pressure fluid center pressure will be lower than the vaporization pressure, so that the continuous high-pressure high-pressure jet will form a local negative pressure at the bottom of the well. So as to achieve the purpose of improving drilling speed.
  • a downhole high-pressure continuous-flow jet drilling tool includes a drill rod, a filtering device, a turbine device, a centrifugal pump or an axial flow pump, and a drill bit, and the drill rod is driven by a surface turntable or a top driving device.
  • a drill bit is provided at the bottom of the drill pipe.
  • a high-pressure jet nozzle and a low-pressure jet nozzle are provided on the drill bit.
  • a filter device, a turbine device, and a multi-stage centrifugal pump or an axial flow pump are sequentially arranged inside the drill pipe along the axis of the drill pipe.
  • the turbine unit with hollow shaft, the hollow shaft means and filtering means connected to the turbine,.
  • the inner diameter of the hollow shaft of the turbine device of the downhole high-pressure continuous-flow jet drilling tool is substantially aligned with the inner diameter of the casing of the centrifugal pump or the axial flow pump.
  • annulus is formed between the inner wall of the drill pipe and the outer wall of the centrifugal pump or the axial flow pump.
  • the high-pressure jet nozzle on the drill bit is connected to a centrifugal pump or an axial flow pump.
  • the low-pressure jet nozzle on the drill bit is used to form circulating circulation of drilling fluid.
  • the low-pressure jet nozzle is installed on the existing drill bit. Inside the cavity.
  • the turbine device is a multi-stage turbine group, and the turbine groups of each stage are connected in series to the hollow shaft.
  • the turbine device is composed of multi-stage turbine sections.
  • the centrifugal pump or the axial-flow pump is mostly Centrifugal pump or axial flow pump.
  • a drilling fluid purification device adopts a cyclone device and is composed of a spiral blade fixed on an inner wall of a drill pipe.
  • the drilling fluid purification device is composed of a spiral blade fixed on a driving shaft.
  • a downhole high pressure continuous flow jet rock breaking method which is based on Bernoulli's principle, the sum of the dynamic pressure and the static pressure at any point of the fluid is zero, and the central liquid pressure of the high pressure jet can be As low as the vaporization pressure, a high-pressure jet with a certain displacement will form a local negative pressure zone at the bottom of the well, and the rock within it will expand and break under its own pore pressure to achieve rock breaking and destroy the "holding effect" in the drilling process. Removal of cuttings to increase drilling speed.
  • the downhole high pressure continuous flow jet rock breaking method includes the following steps:
  • a multi-stage turbine section turbine device is used as a drilling motor, and the drilling fluid is used to rotate the multi-stage turbine section, thereby driving the multi-stage centrifugal pump or axial flow pump to rotate, and pressurizing the drilling fluid flowing into the centrifugal pump or axial flow pump. To make the drilling fluid pressure at 20-40Mpa;
  • the invention is based on the Bernoulli principle.
  • the sum of the dynamic pressure and the static pressure at any point of the fluid is zero.
  • the central liquid pressure of the high-pressure jet can be as low as the vaporization pressure. Therefore, a high-pressure jet with a certain displacement forms a local negative pressure zone at the bottom of the well.
  • the rock within it will expand and break under its own pore pressure to achieve rock breaking, and destroy the "holding effect" in the drilling process to remove the cuttings to improve the drilling speed.
  • This is fundamentally different from the previous downhole pressurized rock breaking drilling mechanism.
  • the previous downhole pressurized rock breaking was designed based on the impact of a high pressure jet to break the rock. Therefore, the high pressure jet should be pressurized in design.
  • the turbine is not used to directly drive the drill bit to rotate, but to drive a multi-stage centrifugal pump or an axial flow pump to pressurize part of the drilling fluid. It is particularly pointed out that this part of the drilling fluid pressurized by the multi-stage centrifugal pump or axial flow pump passes through the hollow shaft from the top of the turbine and enters the multi-stage centrifugal pump or axial flow pump, which reduces pressure loss and improves system efficiency. .
  • the filtering requirements for the drilling fluid are lower than those required when the drilling fluid is pressurized with a hydraulic cylinder.
  • multi-stage centrifugal pumps or axial flow pumps can provide continuous high-pressure jets.
  • the thrust bearing of the present invention can completely seal the drilling fluid without using a rubber seal, it can adapt to the working conditions of higher temperatures in the well ⁇
  • the low-pressure nozzle of the present invention is installed in the existing cavity of the drill bit, the maximum cross-section of the drilling fluid can be ensured, and the drilling fluid can flow back smoothly.
  • This technical measure reduces the requirements of the present invention for ground equipment, and also reduces the sealing requirements of the present invention for a drilling tool.
  • a high-pressure nozzle needs to be installed on the drill bit, and the outlet of the multi-stage centrifugal pump or axial flow pump needs to be installed on the drill bit. Hermetically connected. BRIEF DESCRIPTION OF THE DRAWINGS
  • Fig. 1 is a schematic diagram showing the structure of the present invention.
  • Fig. 2 is a schematic diagram showing the working principle of the present invention. detailed description
  • the present invention provides a high-pressure continuous jet that can be generated downhole.
  • Downhole high-pressure continuous-flow jet drilling tool which includes a drill pipe 1, a drilling fluid filtering device 2, a turbine device 4 using a hollow shaft 3, a thrust bearing 5 supporting the output end of the turbine hollow shaft 3, and a plurality of driven by the turbine hollow shaft 3.
  • Stage centrifugal pump or axial flow pump 6 the suction port 62 of the centrifugal pump or axial flow pump 6 is connected to the hollow hollow shaft 3 in a rotationally sealed manner; a drill bit 7 connected to the lower end of the drill rod 1 is provided with a low-pressure jet nozzle 71 and a high pressure The jet nozzle 72 and the drill rod 1 are driven by a surface turntable or a top driving device.
  • the hollow shaft 3 is also the suction port of a multi-stage centrifugal pump or an axial flow pump 6.
  • the drilling tools are sequentially arranged inside the drill pipe along the axial direction of the drill pipe 1 so that the turbine device 4 drives a multi-stage centrifugal pump or an axial flow pump 6.
  • the drilling fluid enters from the inlet 21 of the filtering device 2.
  • the filtered part of the drilling fluid enters the multistage centrifugal pump or axial flow pump 6 from the top of the turbine 41 through the hollow shaft 3 (as shown by the dotted arrow in FIG. 2). It reaches 20-30Mpa and exits from the high-pressure jet nozzle 72 on the drill.
  • Most of the remaining drilling fluid (shown by the solid line in FIG. 2) is driven by the turbine 41 to rotate, and is ejected from the low pressure jet nozzle ⁇ on the drill bit through the annulus 9 of the drill pipe and the multistage centrifugal pump or axial flow pump. , As shown in Figure 3.
  • the turbine device 4 is used as a drilling motor.
  • the drilling motor may be composed of a multi-stage turbine joint and a hollow shaft.
  • the 9 turbine is rotated by the drilling fluid and drives the hollow shaft to rotate, thereby generating rotation.
  • a thrust bearing box is fixed on the inner wall of the drill pipe, and the hollow shaft of the drilling motor is supported by the thrust bearing, and the rotary torque of the hollow shaft is transmitted to the multistage centrifugal pump or axial flow pump, and the multistage centrifugal pump or axial flow pump is driven 6 rotation; multi-stage centrifugal pump or axial flow pump 6 pressurizes the drilling fluid from the hollow shaft of the motor, and ejects this part of the drilling fluid at high pressure from the drill bit, hits the rock downhole, and the filtered drilling fluid The pressure forms a continuous jet.
  • the drilling fluid purification device may adopt a cyclone device, which is composed of spiral blades fixed on the inner wall of the drill pipe, the blade angle is large, and the pressure loss to the drilling fluid is small.
  • the drilling fluid moves along the spiral blade, it forms a centrifugal rotation, so that large-diameter particles in the drilling fluid flow around the periphery of the drilling fluid purification device.
  • the annulus between the centrifugal pump and the drill pipe is ejected from the low-pressure nozzle of the drill bit; the drilling fluid flowing at the center is purified to a certain degree, and the diameter of the solid phase particles is small, which flows directly to the multistage centrifugal pump through the hollow shaft of the drilling motor.
  • the inside of the axial flow pump this part of the drilling fluid does not pass through the motor turbine, the pressure loss is very small), after being pressurized, it is ejected from the high-pressure nozzle of the drill bit.
  • the drilling fluid purification device may also be composed of spiral blades fixed on a drive shaft, driven by a drilling motor, and rotated at a certain speed to purify the drilling fluid, achieving the same effect as described above.
  • the direction of the spiral blades should be the same as the direction of the drilling motor turbine blades.
  • the shape of the turbine blade matches the flow, speed and pressure drop of the drilling fluid passing through the turbine; part of the clean drilling fluid passing through the purification device enters the hollow shaft through the upper inlet of the hollow shaft. This part of the drilling fluid has a small pressure drop because it does not pass through the turbine. It then enters the multistage centrifugal pump or axial flow pump through the outlet of the hollow shaft.
  • the wall thickness of the hollow shaft should meet the strength requirements of the transmitted torque, and the inner diameter should meet the flow requirements of the high-pressure jet ⁇

Abstract

L'invention concerne un outil de forage de fond de trou à haute pression et jet continu ainsi qu'un procédé permettant de briser la roche. Ledit outil comporte une tige de sonde, un filtre, une unité de turbine, une pompe centrifuge ou pompe hélice et un trépan. La tige sonde est entraînée par une table rotative de fond ou une unité d'entraînement supérieure et pourvue d'un trépan à sa base. Une buse de jet haute pression et une buse de jet basse pression sont solidaires du trépan. Un filtre, une unité de turbine et une pompe centrifuge à étages ou pompe hélice sont disposés en série dans le sens des axes et à l'intérieur de la tige de sonde. L'unité de turbine est équipée d'un arbre creux relié au filtre. L'extrémité d'entrée de l'arbre de la pompe est relié à l'extrémité de sortie de l'arbre creux. L'invention concerne en outre un jet de liquide continu haute pression dirigé vers le bas du trou et destiné à briser la roche et à nettoyer les débris, ce qui permet d'accroître la vitesse de forage.
PCT/CN2004/000352 2003-04-15 2004-04-14 Outil de forage de fonde de trou a haute pression a jet continu et procede permettant de briser la roche WO2004092532A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN200480010363.8A CN1774558B (zh) 2003-04-15 2004-04-14 一种井下高压连续流喷射钻具及其破岩方法
CA002555075A CA2555075A1 (fr) 2003-04-15 2004-04-14 Outil de forage de fonde de trou a haute pression a jet continu et procede permettant de briser la roche
US11/251,373 US20060113114A1 (en) 2003-04-15 2005-10-14 Drilling tool and method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNU032446675U CN2612792Y (zh) 2003-04-15 2003-04-15 一种井下高压连续流喷射钻具
CN03244667.5 2003-04-15

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/251,373 Continuation-In-Part US20060113114A1 (en) 2003-04-15 2005-10-14 Drilling tool and method

Publications (1)

Publication Number Publication Date
WO2004092532A1 true WO2004092532A1 (fr) 2004-10-28

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Country Status (4)

Country Link
US (1) US20060113114A1 (fr)
CN (2) CN2612792Y (fr)
CA (1) CA2555075A1 (fr)
WO (1) WO2004092532A1 (fr)

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US10119368B2 (en) 2013-07-05 2018-11-06 Bruce A. Tunget Apparatus and method for cultivating a downhole surface
CN109184554A (zh) * 2018-11-14 2019-01-11 长江大学 一种基于井下动力马达的自动推进导向钻井三蜗轮共轴驱动装置
CN109736699A (zh) * 2019-03-10 2019-05-10 张成功 一种钻井增速动力夯机

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CN102704856A (zh) * 2012-01-20 2012-10-03 龙梅 一种挖煤机器人组合式钻头的淋水装置
CN103527077B (zh) * 2012-07-04 2015-08-19 长江大学 井下涡轮马达等离子钻井工具
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CN103256007B (zh) * 2013-05-24 2015-02-25 中国石油大学(北京) 井下动力增压钻具
CN103670280B (zh) * 2013-11-29 2018-07-13 中国石油大学(北京) 叶片马达驱动式井下增压装置与方法
CN104121236B (zh) * 2014-07-23 2016-04-06 苏州赛斯德工程设备有限公司 多通道射流真空泵
CN105736483A (zh) * 2014-07-23 2016-07-06 蒋盘君 承载压力高且清洁性能好的多通道射流真空泵
CN105673582A (zh) * 2014-07-23 2016-06-15 蒋盘君 多通道射流真空泵
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US20060113114A1 (en) 2006-06-01

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