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CN-121976792-A - Underground measurement and control stable platform

CN121976792ACN 121976792 ACN121976792 ACN 121976792ACN-121976792-A

Abstract

The invention provides an underground measurement and control stable platform which comprises a circuit shell, a circuit adapter, a circuit core frame, a compression-resistant outer cylinder, a positioning connector and a main runner, wherein an underground measurement and control tool body is fixedly connected to the end part of the circuit shell through threads, the circuit core frame and the circuit adapter are coaxially arranged, a first connecting component and a second connecting component are arranged between the circuit core frame and the circuit adapter, a cooling channel is formed between the circuit core frame and the circuit shell, the left end of the compression-resistant outer cylinder is fixedly connected with the circuit core frame through threads, the right end of the compression-resistant outer cylinder is fixedly connected with a core frame plug through threads, a closed cavity is formed between the compression-resistant outer cylinder and the circuit core frame, industrial heat conducting oil is filled in the cavity, a first disc spring is arranged between the circuit core frame and the circuit adapter, and a second disc spring is arranged between the positioning connector and the circuit shell, the temperature resistance, the measurement and control capacity of the circuit module of the underground tool is improved, the failure rate of the instrument is reduced, and the requirement of efficient operation is met.

Inventors

  • WANG YANG
  • TANG LIANG
  • BAI JING
  • CHEN DONG
  • LIU WEI
  • LUO JIANG
  • FENG SIHENG
  • XIE YI
  • Zeng Mincai
  • ZHANG XIAOLIN

Assignees

  • 中国石油天然气集团有限公司
  • 中国石油集团川庆钻探工程有限公司

Dates

Publication Date
20260505
Application Date
20260211

Claims (12)

  1. 1. The underground measurement and control stable platform is characterized by comprising a circuit shell (1), a circuit adapter (2), a circuit core frame (5), a compression-resistant outer cylinder (7), a positioning connector (12) and a main runner (15); A cooling channel (9) is formed between the circuit core frame (5) and the circuit shell (1); A closed cavity is formed between the compression-resistant outer cylinder (7) and the circuit core frame (5), and industrial heat conducting oil (31) is filled in the cavity; A first disc spring (3) is arranged between the circuit core frame (5) and the circuit adapter (2), and a second disc spring (11) is arranged between the positioning connector (12) and the circuit shell (1); The first disc spring is matched with the second disc spring to realize axial vibration reduction of the whole circuit core frame (5).
  2. 2. The downhole measurement and control stabilization platform of claim 1, The circuit core frame (5) and the circuit adapter (2) are coaxially arranged, and a first connecting component (4) and a second connecting component (16) are arranged between the circuit core frame and the circuit adapter; The left end of the compression-resistant outer cylinder (7) is fixedly connected with the circuit core frame (5) through threads, and the right end of the compression-resistant outer cylinder is fixedly connected with the core frame plug (10) through threads; The end part of the circuit shell (1) is fixedly connected with an underground measurement and control tool body (17) through threads, and a wire harness channel b (39) is arranged in the underground measurement and control tool body (17).
  3. 3. The downhole measurement and control stabilization platform according to claim 2, wherein the circuit adapter (2) comprises an antenna hole (20), a positioning pin hole (21), a set screw hole (22) and a power supply communication hole (23); The circuit adapter (2) and the underground measurement and control tool body (17) are matched with the two positioning pin holes (21) through two positioning pins (18) to realize circumferential positioning.
  4. 4. A downhole measurement and control stabilization platform according to claim 3, wherein the set screw hole (22) is provided with a set screw b (19) cooperating therewith for axial positioning with the downhole measurement and control tool body (17).
  5. 5. The downhole measurement and control stabilization platform according to claim 2, wherein the first connection assembly (4) and the second connection assembly (16) each comprise an aviation male plug (36) and an aviation female plug (38) and are electrically connected by a pigtail wire (40).
  6. 6. The downhole measurement and control stabilization platform according to claim 2, wherein the circuit core frame (5) comprises a wire harness channel a (37), an inflow hole (24), a circuit cavity (14) and a mounting groove (26); The wire harness channel a (37) is electrically connected with the circuit module (8), is communicated with the wire harness channel b (39) through the first connecting component (4) and the second connecting component (16) respectively, and is isolated and sealed with the cooling channel (9) and the main flow channel (15) through the sealing component (6); The circuit cavity (14) is used for installing a circuit module (8) and is installed on the circuit core frame (5) through a fixing screw e (46); four mounting grooves (26) are uniformly distributed in the circumferential direction, and each mounting groove (26) is provided with 2 circuit modules (8) with the same size; the inflow hole (24) is funnel-shaped and communicated with the main flow channel (15), and a wear-resistant layer (25) is welded on the surface of the inflow hole.
  7. 7. The underground measurement and control stabilized platform according to claim 6, characterized in that the core frame plug (10) is provided with an outflow hole (35), the surface of which is welded with a wear-resistant layer (25), and the wear-resistant layer and the inflow hole (24) of the circuit core frame (5) together form a cooling channel (9).
  8. 8. The underground measurement and control stabilized platform according to claim 6, wherein the transmitting antenna T1, T2 and the receiving antenna R1, R2 of the underground measurement and control tool body (17) are electrically connected with the first connecting component (4) through the antenna hole (20) and the wire harness channel b (39), and the second connecting component (16) is electrically connected with a power line and a communication line through the wire harness channel b (39) and the power supply communication hole (23).
  9. 9. The downhole measurement and control stabilization platform according to claim 6, wherein the circuit module (8) comprises a lower cushion pad (30), a circuit board (33), a heat conducting glue (29), an upper cushion pad (32) and a circuit cover plate (28), wherein the lower cushion pad (30), the circuit board (33) and the heat conducting glue (29) are arranged in the circuit cavity (14), wherein the lower cushion pad (30) is arranged at the bottom of the circuit cavity (14), and the circuit board (33) is fixed to the circuit core frame (5) through a fixing screw d (34).
  10. 10. The downhole measurement and control stabilization platform according to claim 9, wherein the heat conducting glue (29) is filled above the circuit board (33), the circuit cover plate (28) comprises an arc top (41) and a base (42), the arc top (41) forms a cavity and is provided with an upper buffer cushion (32), and the base (42) is fixed to the mounting groove (26) through a fixing screw c (27).
  11. 11. The underground measurement and control stabilized platform according to claim 2, characterized in that the core frame plugs (10) are fixedly connected with the positioning joints (12) through 4 fixing screws a (13) uniformly distributed in the circumferential direction, and meanwhile square edge platforms (45) are arranged to be matched with the circuit shell (1) to realize circumferential positioning.
  12. 12. The downhole measurement and control stabilization platform according to claim 6, wherein the sealing assembly (6) is provided with two check rings (43) and two sealing rings (44), and the check rings (43) and the sealing rings (44) are alternately arranged to form a double sealing structure.

Description

Underground measurement and control stable platform Technical Field The invention relates to the technical field of oil drilling equipment, in particular to an underground measurement and control stable platform. Background As the oil gas exploration gradually expands to deep wells and ultra-deep wells at the present stage, the drilling parameter measuring tool is used as key technical equipment for geosteering and reservoir evaluation, and the drilling is frequently caused by complex working conditions such as high temperature, high pressure, high vibration and the like, so that the fault rate of the tool is high, the highest temperature resistance is only 175 ℃, and the exploration and development requirements of deeper reservoirs are difficult to meet. The patent CN113153268A in the prior art discloses an electronic system thermal management packaging device for a high-temperature environment, which comprises a tool inner cylinder, a tool outer cylinder and an aerogel heat insulation layer, wherein a channel for slurry circulation is formed in the tool inner cylinder, the tool outer cylinder is sleeved outside the tool inner cylinder and is arranged at intervals with the tool inner cylinder, the aerogel heat insulation layer is arranged in the intervals, a bracket for installing a circuit board is arranged on the outer side wall of the tool inner cylinder, the circuit board is installed on the bracket, and heating components on the circuit board are arranged towards the tool inner cylinder. Patent CN105275452B discloses a vibration damper with the function of protecting measurement while drilling instrument used in petroleum drilling, which can reduce and absorb axial, torsion and radial vibration generated by drill bit during operation, and improve logging reliability of measurement while drilling instrument. The technical scheme includes that an upper joint, an outer cylinder body, a spline body, a centralizing sleeve and a lower joint are connected through threads, a cavity is formed inside the upper joint, the upper joint is externally supported by an instrument, the lower joint is externally supported by the instrument, the cavity is sequentially provided with a vibration reduction block, an upper vibration reduction block, an instrument joint, an outer vibration reduction block and a vibration reduction block from top to bottom, the vibration reduction block consists of an inner vibration reduction block shell, an outer vibration reduction block shell and fluororubber, the inner vibration reduction block shell and the outer vibration reduction block shell adopt a double-spline structure, fluororubber is filled in the middle of the inner vibration reduction block shell and the outer vibration reduction block shell, the outer vibration reduction block shell and the outer vibration reduction block shell are connected with a mandrel through a flat key, the spline body is connected with a piston through a rectangular spline pair and then connected with the mandrel through a spiral conversion device, a flushing pipe is arranged between the mandrel and the outer cylinder body and the spline body, and the piston is clamped in the flushing pipe to form a hydraulic cavity. The prior art measurement and control tool while drilling generally adopts a cover plate type or a circuit framework, field application practices show that the cover plate type is used for grooving through the outer wall of a tool body, then a circuit board is packaged and fixed, the outer ring of a shaft is utilized for circularly cooling slurry, but the outer wall of the tool generates heat through friction with a well wall, the outer ring of the tool is heated through stratum temperature, the temperature of the outer ring of the tool is not favorable for circularly cooling the slurry, the circuit framework directly packages circuit modules on the metal framework, the circuit modules intensively generate heat to easily cause local overhigh temperature, the circuit is positioned in the middle between the shaft annulus and a water hole of a drilling tool, the slurry circulation cooling capacity is limited, and the heat dissipation requirements of a downhole high-power consumption transmitting circuit and a high-speed acquisition system are difficult to meet. The circuit framework is mainly rigidly connected for ensuring the stability of electric connection, the circuit module is directly screwed and fixed by a plurality of circuit boards, circuit components are fixedly protected by pouring sealant, the circuit components are not effectively buffered in multiple stages, random vibration of a drill bit and torsional impact of a drill string are directly transmitted to the circuit module, and the problems of falling off and short circuit of circuit welding spots are easily caused. On the other hand, the circuit modules in the prior art are arranged in a mixed mode, if the whole encapsulating structure fails, the whole encapsulating structure