Thickening device and method for uniform solidification of composite lost circulation material made up of liquid and granular lost circulation materials

Patent metadata

Field	Value
Publication number	US-2025108344-A1
Application number	US-202418897048-A
Country	US
Kind code	A1
Filing date	Sep 26, 2024
Priority date	Sep 28, 2023
Publication date	Apr 3, 2025
Grant date	—

Abstract

The provided are a thickening device and method for uniform solidification of composite lost circulation material made up of liquid and granular lost circulation materials. The thickening device includes a base. The base is provided with a side wall; an upper end of the side wall is provided with a detachable top cover; the base, the side wall, and the top cover form a sealed chamber; the base is provided with a rotating support platform; the rotating support platform is provided with a detachable slurry cup; the slurry cup is provided therein with agitating shafts; the agitating shafts each are provided with a blade; a top end of the agitating shaft is connected to a threaded rod through a ball head connector; an upper end of the agitating shaft is provided with a second gear; and the threaded rod is provided with a second limit platform.

First claim

What is claimed is:

1 . A thickening device for uniform solidification of composite lost circulation material made up of liquid and granular lost circulation materials, comprising a base, wherein the base is provided with a side wall; an upper end of the side wall is provided with a detachable top cover; and the base, the side wall, and the top cover form a sealed chamber;
the base is provided with a rotating support platform; the rotating support platform is provided with a detachable slurry cup; the slurry cup is provided therein with agitating shafts; the agitating shafts each are provided with a blade; a top end of the agitating shaft is connected to a threaded rod through a ball head connector, allowing the agitating shaft to rotate relative to the threaded rod; an upper end of the agitating shaft is provided with a second gear; the threaded rod is provided with a second limit platform; and the slurry cup comprises an inner surface provided with an inner gear ring for driving the second gear and an outer surface provided with an outer gear ring; the ball head connector comprises a connecting component and a limiting component; and the connecting component is a cylinder, wherein the threaded rod and the agitating shaft are on a same axis; the side wall is provided with a first limit platform, a feed inlet, and a discharge outlet; the first limit platform is detachably connected to a horizontal plate located above the slurry cup; the horizontal plate is provided with slots for front ends of the threaded rods to pass through and slide; the front end of the threaded rod is fastened to the horizontal plate by a nut; the horizontal plate is further provided with a material addition window; and a width of the slot is smaller than a diameter of the second limit platform; and a lower surface of the top cover is provided with a motor; and a rotating shaft of the motor is provided with a first gear, wherein the first gear matches the outer gear ring; wherein the second gear comprises a bearing, the bearing comprises an inner ring and an outer ring, the inner ring of the bearing is fitted onto the agitating shaft and provided with an L-shaped bracket: a lower side of a front end of the L-shaped bracket is provided with a telescopic cylinder; the telescopic cylinder is fitted into a spring; a lower surface of the telescopic cylinder is provided with a second roller: a circumferential surface of the outer ring of the bearing forms a gear surface, wherein the gear surface matches the inner gear ring; and an upper surface of the outer ring of the bearing is provided with a V-shaped groove for accommodating the second roller.

2 . The thickening device for the uniform solidification of the composite lost circulation material made up of liquid and granular lost circulation materials according to claim 1 , wherein there are at least three stabilizer bars arranged at an inner side of the side wall; a front end of each of the at least three stabilizer bars is provided with a first roller; and an included angle between each two adjacent stabilizer bars is 360°/n, n being a total number of the at least three stabilizer bars.

3 . The thickening device for the uniform solidification of the composite lost circulation material made up of liquid and granular lost circulation materials according to claim 1 , wherein there are three slots and three agitating shafts; each two adjacent slots have an included angle of 120°; and each two adjacent agitating shafts have an included angle of 120°.

4 . The thickening device for the uniform solidification of the composite lost circulation material made up of liquid and granular lost circulation materials according to claim 1 , wherein the horizontal plate is provided with a first mounting hole, and a bolt is passed through the first mounting hole to detachably fix the horizontal plate to the first limit platform.

5 . The thickening device for the uniform solidification of the composite lost circulation material made up of liquid and granular lost circulation materials according to claim 1 , wherein when the horizontal plate is fixed to the first limit platform, the slots span a wall of the slurry cup, and the material addition window is located directly above the slurry cup.

6 . The thickening device for the uniform solidification of the composite lost circulation material made up of liquid and granular lost circulation materials according to claim 1 , wherein the limiting component comprises two hemispheres; the two hemispheres are provided with second mounting holes; a bolt is passed through the second mounting holes to fasten the two hemispheres; and the two hemispheres fastened together form a space inside for accommodating the cylinder.

7 . (canceled)

8 . A thickening method based on the thickening device for the uniform solidification of the composite lost circulation material made up of liquid and granular lost circulation materials according to claim 1 , comprising the following steps:
S1: placing the slurry cup on the rotating support platform; connecting, through the ball head connector, the threaded rod to the agitating shaft; passing the threaded rod through the horizontal plate; and pre-fixing, by the nut, the threaded rod to the horizontal plate; S2: fixing the horizontal plate to the first limit platform; adjusting a position of the threaded rod to match the second gear with the inner gear ring; and tightening the nut to secure the threaded rod to the horizontal plate; S3: adding, through the material addition window, a target thickening material into the slurry cup; S4: securing the top cover to the side wall to match the first gear with the outer gear ring; S5: filling, according to a pressurization requirement, the sealed chamber with pressurized oil through the feed inlet, and applying a corresponding oil pressure or air pressure; S6: starting the motor to drive the slurry cup to rotate according to a set speed, and acquiring a real-time torque feedback from the motor; and S7: acquiring a consistence of the target thickening material based on the torque feedback from the motor.

9 . The thickening method according to claim 8 , wherein before the slurry cup is placed on the rotating support platform, there are at least three stabilizer bars arranged at an inner side of the side wall; and an included angle of 360°/n is formed between each two adjacent stabilizer bars to provide anti-shake support for the slurry cup, n being a total number of the at least three stabilizer bars.

10 . The thickening method according to claim 8 , wherein in the thickening device, there are at least three stabilizer bars arranged at an inner side of the side wall; a front end of each of the at least three stabilizer bars is provided with a first roller; and an included angle between each two adjacent stabilizer bars is 360°/n, n being a total number of the at least three stabilizer bars.

11 . The thickening method according to claim 8 , wherein in the thickening device, there are three slots and three agitating shafts; each two adjacent slots have an included angle of 120°; and each two adjacent agitating shafts have an included angle of 120°.

12 . The thickening method according to claim 8 , wherein in the thickening device, the horizontal plate is provided with a first mounting hole, and a bolt is passed through the first mounting hole to detachably fix the horizontal plate to the first limit platform.

13 . The thickening method according to claim 8 , wherein in the thickening device, when the horizontal plate is fixed to the first limit platform, the slots span a wall of the slurry cup, and the material addition window is lo

Assignees

• Univ Chengdu Technology

Inventors

• She Jiping
• Ma Wenjing
• Gong furong
• Wang Yunfei
• Teng Gege
• Zhang Shiyu
• Li Huimin

Classifications

• B01F29/81 Primary

  with stationary mixing elements · CPC title

• E21B41/00

  Equipment or details not covered by groups E21B15/00 - E21B40/00 · CPC title

• C09K8/50

  Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls (compositions for consolidating loose sand or the like around wells C09K8/56) · CPC title

• B01F2215/0422

  Numerical values of angles · CPC title

• B01F27/90

  with paddles or arms · CPC title