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CN-121993073-A - Windowing and drilling integrated tool and windowing and drilling method

CN121993073ACN 121993073 ACN121993073 ACN 121993073ACN-121993073-A

Abstract

The invention belongs to the technical field of oilfield development, and discloses a windowing drilling integrated tool and a windowing drilling method, wherein the windowing drilling integrated tool comprises an upper joint, a cutting part, a gauge protection part, a reducing part and a cutting head which are sequentially arranged, the upper joint is used for connecting a drill rod, a weighting drill rod or a drill collar, the cutting head is capable of grinding through the casing to make an initial window, and is capable of cutting the formation and performing drilling operations in the formation, the reducing portion is capable of expanding the initial window from small, the gage portion is capable of grinding the initial window to a target size, and the cutting portion is used for milling the casing. According to the invention, the cutting head can grind through the sleeve and drill into a stratum, so that the windowing and drilling integrated tool can achieve the effect of integrating two functions, further, the drilling construction of the sleeve windowing operation and the antimagnetic section can be completed in one drilling operation, the windowing efficiency is effectively improved, the construction period is greatly reduced, and the purposes of reducing cost and enhancing efficiency are achieved.

Inventors

  • YAN WEIJUN
  • DAI YUNCAI
  • LUO DA
  • ZHOU JIANHUA
  • GUO SHILIANG
  • WANG YEHAN
  • MENG QINGLIANG
  • LIU HUAN
  • CHEN FUJUN
  • LIU YANG
  • PING SHANHAI
  • SUN LIWEI
  • WANG KEWEI
  • ZHANG ZENGQIANG
  • SHI LIANHAI
  • GAO QINGCHUN
  • CHEN ZHENGANG
  • ZHAO ZHAN
  • SHI HONGYAN
  • KONG DONGLIANG
  • ZHAO LEI

Assignees

  • 中国石油集团长城钻探工程有限公司
  • 中国石油天然气集团有限公司

Dates

Publication Date
20260508
Application Date
20241107

Claims (10)

  1. 1. Windowing and drilling integrated tool, which is characterized by comprising: The upper joint (10), cutting portion, gauge protection portion, reducing portion and cutting head (90) that set gradually, upper joint (10) are used for connecting drilling rod, aggravate drilling rod or drill collar, cutting head (90) can grind through the sleeve pipe in order to make initial window, and can cut the stratum and carry out drilling operation in the stratum, the reducing portion can with initial window is enlarged by little, gauge protection portion can grind initial window reaches the target size, cutting portion is used for milling the sleeve pipe.
  2. 2. The integrated fenestration and drilling tool as recited in claim 1, wherein the cutting portion is provided as an alloy body (20), and a first alloy block (30) is provided on the alloy body (20), the alloy body (20) is capable of cutting the casing, and the first alloy block (30) is capable of milling the casing.
  3. 3. The integrated fenestration and drilling tool of claim 2 wherein the alloy body (20) is made of cemented carbide pieces and the first alloy piece (30) is made of a hard crushed alloy.
  4. 4. The integrated fenestration drilling tool as recited in claim 1, wherein the gage portion is provided as a gage body (40), the cutting portion and the reducing portion are located at both ends of the gage body (40), respectively, and an outer diameter of the gage body (40) is smaller than an outer diameter of the cutting portion.
  5. 5. The integrated tool for windowing and drilling according to claim 1, wherein the reducing portion is provided as a reducing body (60) and a milling alloy (70), outer diameters of the reducing body (60) and the milling alloy (70) are each gradually reduced in an axial direction from the upper joint (10) to the cutting head (90), and the milling alloy (70) is located between the reducing body (60) and the cutting head (90).
  6. 6. The integrated fenestration and drilling tool of claim 5 wherein the milling alloy (70) is made of a rectangular hard alloy.
  7. 7. The integrated fenestration and drilling tool as recited in claim 1, wherein an octagonal cylinder (50) is further provided between the gauge section and the gauge section, an outer diameter of the octagonal cylinder (50) is larger than an outer diameter of the gauge section, and the octagonal cylinder (50) is capable of cutting the casing.
  8. 8. The integrated fenestration drilling tool of claim 1 wherein a drilling block (80) is provided on the cutting head (90), the drilling block (80) being provided as a PDC alloy block for drilling into a formation.
  9. 9. A fenestration and drilling integrated tool according to claim 3, characterized in that a second alloy block (100) is provided on the cutting head (90), the second alloy block (100) also being made of hard crushed alloy, and the particles of the second alloy block (100) being larger than the particles of the first alloy block (30).
  10. 10. A windowing drilling method, which adopts the windowing drilling integrated tool as claimed in any one of claims 1 to 9 for operation, and is characterized by comprising the following steps: Connecting an upper joint (10) in the windowing and drilling integrated tool with a drill rod, a weighted drill rod or a drill collar, and lowering the windowing and drilling integrated tool to a target depth in a casing; contacting the sleeve by a cutting head (90) and milling the sleeve under the action of a second alloy block (100) until an initial window is formed; Grinding the initial window by milling the alloy (70), the reducing body (60) and the octagonal column (50) so that the size of the initial window is enlarged; Further grinding the sleeve by means of a gage body (40) such that the initial window is ground to a target size; Then, the drilling block (80) is contacted with the stratum and cuts the stratum, so that the whole window drilling integrated tool rapidly drills in the stratum until the antimagnetic section of 20m is drilled; And finally, lifting the windowing and drilling integrated tool to the upper part of the window, and carrying out window repairing operation until the window is lifted up and lowered down without barriers, and taking out the windowing and drilling integrated tool.

Description

Windowing and drilling integrated tool and windowing and drilling method Technical Field The invention relates to the technical field of oilfield development, in particular to a windowing drilling integrated tool and a windowing drilling method. Background As oil gas development enters a middle-late stage, a window sidetrack needs to be drilled on an old well casing, so that the residual oil reservoir is developed, the old well is produced again, the oil gas recovery ratio is further improved, and the operation mode is widely and widely applied to oil field development. Meanwhile, any complicated condition occurs in the drilling process, when the lower well bore can not be saved, the purposes of saving the old well, treating the complex well and reducing the drilling cost can be achieved by selecting a proper mode of the old well bore, which is positioned on the upper sleeve pipe, for window-opening sidetracking operation, so that the window-opening sidetracking operation of the sleeve pipe becomes one of important means for increasing oil production in the later period of oil field development. At present, the traditional casing windowing construction flow is usually to firstly insert a windowing tool, mill the casing for 3-4m to window and drill the casing, then drill the casing to replace a drill bit, drive a antimagnetic section of about 20m by using a drilling tool combination without a screw and an instrument, and drill the casing again after the antimagnetic section is drilled, insert the casing into a directional drilling tool to carry out drilling operation. The arrangement of the antimagnetic section is not only convenient for the entering of the orientation tool (the length is about 17m generally), so that the orientation tool can enter the stratum, but also can be far away from the casing as far as possible, and the measurement error of the subsequent azimuth, well deviation and other data caused by magnetic interference is avoided. However, the traditional windowing tool is low in windowing efficiency, and repeated tripping and tripping are needed to carry out drilling operation in the follow-up process, so that the construction period is prolonged. Therefore, how to enable the drilling construction of the casing windowing and the antimagnetic section to be completed in one drilling process, improve the windowing efficiency and reduce the construction period is a problem to be solved by the current personnel in the field. Disclosure of Invention The invention aims to provide a windowing drilling integrated tool and a windowing drilling method, so that drilling construction of a sleeve windowing and a antimagnetic section can be completed in one drilling process, windowing efficiency can be improved, and a construction period can be shortened. To achieve the purpose, the invention adopts the following technical scheme: Windowing and drilling integrated tool, wherein, include: The upper joint, the cutting portion, the gauge protection portion, the reducing portion and the cutting head of setting in order, this upper joint is used for connecting drilling rod, aggravate drilling rod or drill collar, this cutting head can grind through the sleeve pipe and make initial window, and can cut the stratum and carry out drilling operation in the stratum, this reducing portion can enlarge this initial window from little, this gauge protection portion can grind this initial window in order to reach the target size, this cutting portion is used for milling this sleeve pipe. Alternatively, the cutting portion is provided as an alloy body, and a first alloy block is provided on the alloy body, the alloy body being capable of cutting the sleeve, the first alloy block being capable of milling the sleeve. Alternatively, wherein the alloy body is made of cemented carbide pieces and the first alloy piece is made of a hard crushed alloy. Alternatively, the gauge portion is configured as a gauge body, the cutting portion and the variable diameter portion are respectively located at both ends of the gauge body, and an outer diameter of the gauge body is smaller than an outer diameter of the cutting portion. Alternatively, wherein the reducing portion is provided as a reducing body and a milling alloy, outer diameters of the reducing body and the milling alloy are each gradually reduced in an axial direction from the upper joint to the cutting head, and the milling alloy is located between the reducing body and the cutting head. Alternatively, wherein the milling alloy is made of a rectangular hard alloy. Optionally, an octagon cylinder is further arranged between the gauge protection part and the variable diameter part, the outer diameter of the octagon cylinder is larger than that of the gauge protection part, and the octagon cylinder can cut the sleeve. Optionally, a drilling block is disposed on the cutting head, the drilling block being configured as a PDC alloy block for drilling into the formation. Optionally, a