Sample preparation device

A technology of an opening device and a casing is applied in the field of oil and gas exploration, and can solve the problems of difficulty in sampling natural fracture-cavity carbonate rocks, large differences in the distribution rules of natural pores and fractures, and large differences in natural rock samples.

Pending Publication Date: 2021-04-20
CHONGQING UNIV +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] However, it is difficult to sample natural fractured-vuggy carbonate rocks. Since fractured-vuggy carbonate rocks have experienced multiple tectonic movements during the depositi

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Embodiment Construction

[0023] The embodiment of the present invention provides a sample preparation device to realize various fracture and hole layouts. On this basis, the indoor fracture-cavity carbonate rock targeted fracturing test can be carried out, which is beneficial to find out different fractures. The different effects of the distribution of caves on fracture initiation and expansion in targeted fracturing tests can be used to guide the exploration and development of oil and gas in actual fracture-cavity and fault-karst carbonate reservoirs.

[0024] The technical solutions in the embodiments of the present invention are to achieve the above-mentioned technical effects, and the general idea is as follows:

[0025] The support rod is arranged on the top of the upper opening device shell; the upper end of the connection line is connected with the support rod, and the lower end of the connection line is connected with the bottom of the upper opening device shell; the film storage body and the p...

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Abstract

The invention discloses a sample preparation device. supporting rods and a cover plate are arranged at the top end of an upper opening device shell; the upper ends of connecting lines are connected with the supporting rods; film storage bodies and prefabricated slabs are arranged on the connecting lines; an opening is formed in the cover plate; a targeted fracturing wellbore penetrates through the opening and extends into the device shell; a directional perforation plate is arranged at the lower part of the targeted fracturing wellbore; scales are arranged in the circumferential direction of the outer side of the opening; and a pointer is arranged at the top of the wellbore and located over the directional perforation plate. Height control of a hole and seam distribution scheme is achieved by controlling the length of the connecting lines, orientation control of the hole and seam distribution scheme is achieved by changing the position of the connecting lines on the supporting rods and the bottom of the device shell, directional perforation angle control is achieved by pointing to different scales through the pointer, and different seam and hole arrangement modes are achieved. And then the fracture-cavity type carbonate rock targeted fracturing test is carried out, and different influences of different fracture-cavity distribution conditions on fracture initiation and expansion of the targeted fracturing test can be found out.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploration, in particular to a sample preparation device. Background technique [0002] With the continuous exploration and development of carbonate oil and gas reservoirs in the world, large deep marine carbonate oil and gas fields have gradually become an important field of oil and gas exploration and development, accounting for 60% of the world's proven oil and gas reserves. Because of its wide distribution, uniform and stable thickness, and good physical properties, it has outstanding mining potential. However, carbonate reservoirs are characterized by deep burial, ultra-high temperature, ultra-high pressure, strong heterogeneity, and well-developed pores and caves, while deep oil and gas resources are mainly stored in complex fracture-cave reservoirs of carbonate rocks. In the pore-fracture structure, this makes its mining more difficult, and most wells need reservoir fracturing to achi...

Claims

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Application Information

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IPC IPC(8): G01N1/28
Inventor 杨涵志毕振辉吴恒川郭印同王磊常鑫郭武豪周俊
Owner CHONGQING UNIV
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