CN-224214164-U - Indoor simulation platform for trafficability test of drilling tools with different curvatures of horizontal well

CN224214164UCN 224214164 UCN224214164 UCN 224214164UCN-224214164-U

Abstract

The utility model relates to the technical field of drilling test equipment, and discloses an indoor simulation platform for testing the trafficability of drilling tools with different curvatures of a horizontal well, which comprises a power head, a drilling machine base, a lifting frame and a horizontal well simulation device, wherein one end of the drilling machine base is rotatably connected with the lifting frame, the power head is slidably connected with the drilling machine base, the horizontal well simulation device comprises a simulation sleeve, a first sleeve clamping mechanism and a second sleeve clamping mechanism, the inner wall of the simulation sleeve is prefabricated according to the actual horizontal well track, the two ends of the simulation sleeve are respectively clamped on the first sleeve clamping mechanism and the second sleeve clamping mechanism, the first sleeve clamping mechanism is arranged right in front of an output shaft of the power head and is fixedly connected with the drilling machine base, the second sleeve clamping mechanism is fixedly arranged, and the simulation platform can be used for repeatedly etching drilling conditions of well sections with different curvatures under a laboratory environment so as to test, verify and predict the trafficability of the designed drilling tools in the well sections.

Inventors

GONG XUANPING
GAO MINGZHONG
CHENG XIAOYU
HAO HAICHUN
CHENG CHENG
YANG LEI

Assignees

中煤能源研究院有限责任公司
深圳大学

Dates

Publication Date: 20260508
Application Date: 20250724

Claims (8)

1. The indoor simulation platform for the trafficability test of the drilling tools with different curvatures of the horizontal well is characterized by comprising a power head, a drilling machine base, a lifting frame and a horizontal well simulation device, wherein one end of the drilling machine base is rotatably connected with the lifting frame, the power head is slidably connected with the drilling machine base, the sliding direction of the power head is parallel to the axis of an output shaft of the power head, the output shaft of the power head is used for outputting rotary power, The horizontal well simulation device comprises a simulation sleeve, a first sleeve clamping mechanism and a second sleeve clamping mechanism, wherein the inner wall of the simulation sleeve is prefabricated according to an actual horizontal well track, two ends of the simulation sleeve are respectively clamped on the first sleeve clamping mechanism and the second sleeve clamping mechanism, the first sleeve clamping mechanism is arranged right in front of an output shaft of the power head and is fixedly connected with the drilling machine base, and the second sleeve clamping mechanism is fixedly arranged.
2. The indoor simulation platform for testing the trafficability of drilling tools with different curvatures of horizontal wells according to claim 1, wherein the simulation casing is made of transparent materials.
3. The indoor simulation platform for testing the trafficability of drilling tools with different curvatures of the horizontal well according to claim 2, further comprising a video monitoring device, wherein the video monitoring device is used for shooting the trafficability of the drilling tools in the simulation casing.
4. The indoor simulation platform for testing the trafficability of drilling tools with different curvatures of horizontal wells according to claim 1, wherein a plurality of pressure sensors are arranged in the simulation casing, and the pressure sensors are used for monitoring the contact force distribution condition between the drilling tools and the inner wall of the simulation casing.
5. The indoor simulation platform for testing the trafficability of drilling tools with different curvatures of horizontal wells according to claim 1, further comprising a propelling mechanism, wherein the propelling mechanism comprises a propelling motor and a propelling screw rod, the propelling screw rod is rotatably connected with the drilling machine base, the power head is in threaded connection with the propelling screw rod, and the propelling motor is used for driving the propelling screw rod to rotate.
6. The indoor simulation platform for testing the trafficability of drilling tools with different curvatures of the horizontal well according to claim 5, further comprising a hydraulic clamping device, wherein the hydraulic clamping device comprises two opposite hydraulic clamping mechanisms, each hydraulic clamping mechanism comprises a clamping hydraulic cylinder and a clamping shoe, one end of each clamping hydraulic cylinder is fixedly connected with the drilling machine base, the other end of each clamping hydraulic cylinder is fixedly connected with each clamping shoe, each clamping shoe is semicircular, a clamping area is formed between each two clamping shoes, each clamping area is coaxial with an output shaft of the corresponding power head, and each clamping area is arranged between the corresponding power head and the corresponding first sleeve clamping mechanism.
7. The indoor simulation platform for testing the trafficability of drilling tools with different curvatures of the horizontal well according to claim 1, further comprising an inclined hydraulic cylinder, wherein two ends of the inclined hydraulic cylinder are rotatably connected with the lifting frame and the drilling machine base respectively.
8. The indoor simulation platform for testing the trafficability of drilling tools with different curvatures of horizontal wells according to claim 1, wherein the second casing clamping mechanism comprises a clamping seat, a clamping piece and a locking mechanism, the clamping seat is fixedly arranged, one end of the clamping piece is rotatably connected with the clamping seat, the other end of the clamping piece is used for clamping the simulation casing, and the locking mechanism is used for fixing the clamping piece with the clamping seat.

Description

Indoor simulation platform for trafficability test of drilling tools with different curvatures of horizontal well Technical Field The utility model relates to the technical field of drilling test equipment, in particular to an indoor simulation platform for testing the trafficability of drilling tools with different curvatures of a horizontal well. Background With the continuous development of unconventional oil and gas resources, horizontal wells and large-displacement wells are widely applied in drilling engineering, especially in shale gas, coalbed methane, heavy oil, old well sidetrack drilling and other engineering practices, in order to improve the contact area between a shaft and a reservoir, high-track control horizontal wells with smaller curvature radius are often designed. The well sections with obvious curvature change in the horizontal well have extremely high design requirements on the adaptability and the throughput capability of the drilling tool assembly structure, and the drilling tool assembly structure suitable for the horizontal well can be designed with great importance in the aspects of drilling tool assembly structure design, such as drilling tool blocking, bending limitation, underground accidents and the like, due to the fact that the drilling tool assembly structure is slightly improperly designed. The drilling tool assembly structure suitable for the horizontal well is formed by sequentially connecting a plurality of drill rod sections, and the parameters of each drill rod section need to be specifically designed when the drilling tool assembly structure is applied to the well section with complex curvature. At present, when drilling tools are designed, the passing ability of a drilling tool combination structure in well sections with different curvatures is mainly estimated by means of numerical simulation or experience, and visual, controllable and repeatable indoor experimental means are lacked for verification and contrast analysis, so that the optimal design and risk prediction ability of the drilling tool combination structure in well sections with complicated curvatures are severely limited. Disclosure of utility model The utility model aims to overcome the defects of the prior art, provides an indoor simulation platform for testing the trafficability of drilling tools with different curvatures of a horizontal well, can simulate the actual drilling conditions of the horizontal well indoors and test the trafficability of the drilling tools, and provides experimental verification support for the drilling tool design of underground complex track drilling. The aim of the utility model is realized by the following technical scheme: The utility model provides an indoor simulation platform of different camber drilling tools of horizontal well trafficability characteristic test, includes unit head, rig base, crane and horizontal well analogue means, the one end of rig base with the crane rotatable coupling, the unit head with rig base slidable coupling, the slip direction of unit head is on a parallel with the axis of the output shaft of unit head, the output shaft of unit head is used for exporting rotary power, horizontal well analogue means includes simulation sleeve pipe, first sleeve pipe fixture and second sleeve pipe fixture, simulation sleeve pipe's inner wall is prefabricated according to actual horizontal well orbit, simulation sleeve pipe's both ends centre gripping respectively be in on first sleeve pipe fixture and the second sleeve pipe fixture, first sleeve pipe fixture sets up the output shaft of unit head in the place ahead and with rig base fixed connection, second sleeve pipe fixture fixed establishment, the indoor simulation platform of different camber drilling tools of horizontal well trafficability characteristic test can be in laboratory environment again simulate the entering condition of curvature well section to verify the drilling tool to pass the performance test before the drilling tool is gone into the well and use. Specifically, the simulation sleeve is made of transparent materials so as to observe the passing condition of the drilling tool in the simulation sleeve. Specifically, the device also comprises a video monitoring device, wherein the video monitoring device is used for shooting the passing condition of the drilling tool in the simulated casing. Specifically, a plurality of pressure sensors are arranged in the simulation sleeve, and the pressure sensors are used for monitoring the distribution condition of contact force between the drilling tool and the inner wall of the simulation sleeve. Specifically, the drilling machine further comprises a propelling mechanism, the propelling mechanism comprises a propelling motor and a propelling screw rod, the propelling screw rod is rotatably connected with the drilling machine base, the power head is in threaded connection with the propelling screw rod, and the propelling motor is used for driving