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CN-121988559-A - A clearing device for shale surface crude oil

CN121988559ACN 121988559 ACN121988559 ACN 121988559ACN-121988559-A

Abstract

The invention provides a clearing device for crude oil on the surface of shale, which comprises a processing box, a first sliding part arranged in the processing box, a clamping mechanism used for placing a shale sample and a clearing unit arranged in the processing box and positioned above the clamping mechanism, wherein the clearing unit comprises a cleaning mechanism used for clearing crude oil on the surface of the shale sample, a wiping mechanism used for cleaning the shale sample and a test piece used for testing the shale sample.

Inventors

  • LIU XIAOYU
  • HUANG ZHENKAI
  • MENG XIANGLONG

Assignees

  • 中国石油化工股份有限公司
  • 中国石油化工股份有限公司石油勘探开发研究院

Dates

Publication Date
20260508
Application Date
20241106

Claims (10)

  1. 1. A cleaning apparatus for shale surface crude oil, comprising: a treatment box (10), A first slide (11) arranged in the treatment tank (10), a clamping mechanism (20) arranged on the first slide (11) and used for placing shale samples, and A cleaning unit disposed within the processing tank (10) above the clamping mechanism (20), the cleaning unit comprising a cleaning mechanism (30) for cleaning surface crude oil of the shale sample, a wiping mechanism (40) for cleaning the shale sample, and a test piece (12) for testing the shale sample.
  2. 2. The cleaning apparatus for shale surface crude oil as claimed in claim 1, wherein said clamping mechanism (20) comprises a base (21) configured as a U-shaped structure, a symmetrically arranged holding-up slot (22) provided within said base (21) for securing said shale sample, and a corner stabilizing plate (23) for reinforcing said shale sample.
  3. 3. The cleaning device for shale surface crude oil as claimed in claim 2, wherein a first electric push rod (24) for adjusting said corner stabilizing plate (23) is provided on the side wall of said base (21).
  4. 4. The cleaning apparatus for shale surface crude oil as claimed in claim 1, wherein said clamping mechanism (20) further comprises a transmission assembly (25) arranged on both sides of said base (21) for adjusting said holding-up slot (22), said transmission assembly (25) comprising: A first driving wheel (251) arranged at the end part of the supporting groove (22), A transmission rod (253) transversely arranged in the base (21), a second transmission wheel (252) arranged at the end part of the transmission rod (253), and A conveyor belt (254) sleeved outside the first driving wheel (251) and the second driving wheel (252), Wherein a tension wheel (255) for contacting with the conveyor belt (254) is arranged on the side wall of the base (21).
  5. 5. The cleaning device for shale surface crude oil as claimed in claim 1, wherein the cleaning mechanism (30) comprises a frame (31), a high pressure pump (32) arranged above the frame (31), a liquid reservoir (33) connected with the high pressure pump (32) through a first connecting pipe (301), and a pipe (34) arranged on the frame (31) and connected with the high pressure pump (32) through a second connecting pipe (302), wherein a plurality of equally distributed nozzles (35) are arranged on the pipe (34).
  6. 6. The cleaning apparatus for shale surface crude oil as claimed in claim 1, wherein said wiping mechanism (40) comprises a carriage (41), a second slider (42) forming a sliding connection with said carriage (41), and a third slider (43) forming a sliding connection with said second slider (42).
  7. 7. The device for removing crude oil from shale surfaces according to claim 6, characterized in that a second electric push rod (44) moving vertically is provided on the third slider (43), The wiping mechanism (40) further comprises a wiping plate (45) fixed at the bottom of the second electric push rod (44), and wiping cotton (46) arranged below the wiping plate (45), wherein the wiping cotton (46) is detachably arranged on the lower end face of the wiping plate (45).
  8. 8. The cleaning apparatus for shale surface crude oil as claimed in claim 1, wherein said test piece (12) is configured as a laser co-polymer Jiao Ceshi instrument.
  9. 9. The cleaning device for shale surface crude oil as claimed in claim 8, wherein two first partitions (13) are arranged longitudinally in the treatment tank (10), two first partitions (13) being arranged between the wiping mechanism (40) and the cleaning mechanism (30) and the test piece (12).
  10. 10. The cleaning apparatus for shale surface crude oil as claimed in claim 9, further comprising a recovery unit disposed below the treatment tank (10), the recovery unit comprising a recovery tank (50), a second partition plate (51) which is laid flat on an upper end surface of the recovery tank (50) and allows a cleaning liquid to pass therethrough, and a recovery mechanism disposed within the recovery tank (50), Wherein the recovery mechanism comprises two obliquely arranged guide plates (52), a containing chamber formed between the two guide plates (52), and a recovery drawer (53) matched with the containing chamber.

Description

A clearing device for shale surface crude oil Technical Field The invention relates to the technical field of shale cleaning, in particular to a device for cleaning crude oil on the surface of shale. Background Shale oil gas is an important energy resource, and development technology thereof is always an important research direction of petroleum industry, wherein, the cleaning of shale surface crude oil is a key technology, which directly affects subsequent testing and analysis results, laser confocal testing is an advanced microscopic analysis technology, and can accurately measure and analyze microstructure of shale surface, however, shale heterogeneity is extremely strong, and residual oil on the surface (especially residual oil on the surface of shale sample after saturated oil experiment or rock core displacement experiment) can affect accuracy of testing results, so that effective crude oil cleaning on the shale surface is required before laser confocal testing is carried out. In the current shale oil gas exploitation, aiming at the cleaning of crude oil on the shale surface, physical or chemical means such as solvent cleaning, heat treatment and high-pressure flushing are mainly adopted, the methods can reduce crude oil residues to a certain extent, but have obvious limitations, firstly, crude oil components with extremely strong adsorptivity are difficult to thoroughly strip, the prior art cannot realize complete cleaning, secondly, physical or chemical damage is easily caused to the shale surface in the treatment process, the accuracy and reliability of follow-up test data are directly affected, furthermore, stable repeatability is lacking among different batches of treatments, the consistency of oil stain cleaning on the shale sample surface is difficult to ensure, and finally, the traditional cleaning method has complex operation and low efficiency, and is difficult to meet the dual requirements of high treatment speed and cost benefit in large-scale shale oil gas exploitation. Accordingly, it is desirable in the art to provide a scavenger for shale surface crude oil that addresses the above-described technical problems. Disclosure of Invention The invention aims to provide a device for removing crude oil on the surface of shale, which effectively solves the problems of incomplete cleaning, easy sample damage, complex operation and the like in the background technology through the technical characteristics of integrated design, multidimensional displacement control, a cleaning mode combining physics and chemistry, an integrated test flow and the like, and provides a more efficient, accurate and environment-friendly crude oil cleaning solution for the development of shale oil gas. According to the invention, a cleaning device for shale surface crude oil is provided, which comprises a treatment box, A first sliding part arranged in the treatment box, a clamping mechanism used for placing shale samples is arranged on the first sliding part, and The cleaning unit is arranged in the processing box and above the clamping mechanism, and comprises a cleaning mechanism for cleaning surface crude oil of the shale sample, a wiping mechanism for cleaning the shale sample and a test piece for testing the shale sample. In one embodiment, the clamping mechanism includes a base configured as a U-shaped structure, a pair of symmetrically arranged bracket slots disposed within the base for securing the shale sample, and a corner stabilizing plate for reinforcing the shale sample. In one embodiment, a first electric push rod for adjusting the corner stabilizing plate is arranged on the side wall of the base. In one embodiment, the clamping mechanism further comprises a transmission assembly disposed on both sides of the base for adjusting the bracket, the transmission assembly comprising: a first driving wheel arranged at the end part of the supporting groove, A transmission rod transversely arranged in the base, a second transmission wheel arranged at the end part of the transmission rod, and A conveyor belt sleeved outside the first driving wheel and the second driving wheel, The side wall of the base is provided with a tensioning wheel which is used for being in contact with the conveyor belt. In one embodiment, the cleaning mechanism comprises a frame, a high-pressure pump arranged above the frame, a liquid storage tank connected with the high-pressure pump through a first connecting pipe, and a pipeline arranged on the frame and connected with the high-pressure pump through a second connecting pipe, wherein a plurality of nozzles distributed at equal intervals are arranged on the pipeline. In one embodiment, the wiping mechanism includes a bracket, a second slider in sliding connection with the bracket, and a third slider in sliding connection with the second slider. In one embodiment, a second electric push rod which moves vertically is arranged on the third sliding piece, The wiping mechanism further compris