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Unconformity screened oil-gas reservoir physical simulation experimental device and method

An experimental device and physical simulation technology, applied in earthwork drilling, wellbore/well components, etc., can solve undiscovered problems and achieve the effect of convenient operation

Inactive Publication Date: 2015-12-23
CHINA UNIV OF PETROLEUM (EAST CHINA) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The existing physical simulations of oil and gas migration and accumulation mechanisms are basically carried out in a large sandbox. Different geological models are constructed in the sandbox to simulate or verify the laws of oil and gas migration and accumulation in a certain area. Experimental device and experimental method for simulating the formation mechanism of formation oil and gas reservoirs by changing the lithology, compaction and cementation degree of unconformity formation

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  • Unconformity screened oil-gas reservoir physical simulation experimental device and method
  • Unconformity screened oil-gas reservoir physical simulation experimental device and method
  • Unconformity screened oil-gas reservoir physical simulation experimental device and method

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Experimental program
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Embodiment 1

[0051] Embodiment 1: as figure 1 As shown, a physical simulation experiment device for unconformity shielding oil and gas reservoirs, including a formation oil and gas reservoir simulator, the formation oil and gas simulator includes a formation box 1 and an unconformity cabin 2 located above the formation box 1, and the formation box 1 A fault zone box 3 is connected to the side of the unintegrated cabin body 2, and the oil injection hole 4 and the oil outlet hole 5 on the fracture zone box body 3 are respectively connected to the fluid injection system and the fluid output system; the fault zone box 3 is connected to the formation There are holes on the side where the box body 1 connects with the unintegrated cabin body 2 and on the bottom plate 25 of the unintegrated cabin body; the formation box body 1 includes three independent simulation rooms, namely simulation room I6 and simulation room II7 , simulation chamber III8, the length of simulation chamber I6 is shorter than...

Embodiment 2

[0063] Embodiment 2: as Figure 8As shown, a physical simulation experiment device for unconformity shielding oil and gas reservoirs, including a formation oil and gas reservoir simulator, the formation oil and gas simulator includes a formation box 1 and an unconformity cabin 2 located above the formation box 1, and the formation box 1 A fault zone box 3 is connected to the side of the unintegrated cabin 2, and the fluid injection system and the fluid output system are respectively connected to the oil injection hole 4 and the oil outlet hole 5 on the fracture zone box 3. Holes are provided on the side of the fault zone box 3 connected to the formation box 1 and the unintegrated cabin 2 and the bottom plate 25 of the unconformed cabin. The formation box 1 includes three layers of independent simulation rooms, which are respectively simulation room I6, simulation room II7, and simulation room III8. The length of simulation room I6 is shorter than that of simulation room II7, a...

Embodiment 3

[0076] Embodiment 3: The experimental method of the present invention is described by taking the simulated formation unconformity with a formation dip angle of 30 degrees as an example. The experimental setup described in Example 2 was used for the experiments. During the experiment, according to Figure 10 The physical simulation experiment model of the unconformity barrier oil and gas reservoir shown is used to configure the formation oil and gas reservoir simulator, Figure 10 Different compartments in the model shown are filled with quartz sand of different grain sizes to represent differences in geological processes such as deposition and cementation. During the experiment, the simulation room I was filled with 350 micron particle size quartz sand as medium sandstone, the simulation room II was filled with 500 micron particle size quartz sand as coarse sandstone, and the simulation room III was filled with 750 micron particle size quartz sand as conglomerate. The belt b...

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Abstract

The invention relates to an unconformity screened oil-gas reservoir physical simulation experimental device and method. The experimental device comprises a stratigraphic oil-gas reservoir simulator, wherein the stratigraphic oil-gas reservoir simulator comprises a stratigraphic box body and a unconformity cabin located above the stratigraphic box body; a fault zone box body is connected to the side surfaces of the stratigraphic box body and the unconformity cabin; an oil filling hole and an oil discharging hole on the fault zone box body are respectively connected with a fluid injection system and a fluid output system; holes are formed in the side, connected with the stratigraphic box body and the unconformity cabin, of the fault zone box body and the baseplate of the unconformity cabin; and the stratigraphic box body comprises a plurality of layers of independent simulation rooms, the lengths of the simulation rooms at the upper layers are smaller than those of the simulation rooms at the lower layers, all the simulation rooms are in contact connection with the unconformity cabin, and holes are formed in two side surfaces of each layer of simulation room. The unconformity screened oil-gas reservoir physical simulation experimental device and method can simulate the oil-gas migration and accumulation process under screening of an unconformity surface, analyze the stratigraphic unconformity screened oil-gas reservoir forming mechanism and control factors, and deepen the recognition of both stratigraphic oil-gas reservoir forming factors and oil-gas distribution rules, thereby providing references for oil-gas exploration in petroliferous basins and well serving experimental teaching.

Description

technical field [0001] The present invention relates to an experimental device and experimental method for oil and gas migration and accumulation, in particular, to a physical simulation device and experimental method for the formation mechanism of unconformity shielding oil and gas reservoirs. The degree of sealing ability can trace the controlling effect of formation unconformity on oil and gas migration and accumulation. Background technique [0002] Years of oil and gas exploration practice at home and abroad have shown that stratigraphic oil and gas reservoirs play a pivotal role in exploration. Worldwide, except for the Persian Gulf and the former Soviet Union, 43% of oil reserves and 30% of natural gas reserves are stored in stratigraphic traps. Foreign oil and gas reservoirs such as Prudhoe Bay, East Texas, Hasi-Mesaud, and Quarunquar, and domestic oil and gas reservoirs such as North China Renqiu, Ordos Jingbian, Tarim Tahe, and Liaohe Depression Paleozoic Broadly...

Claims

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Application Information

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IPC IPC(8): E21B49/00
Inventor 陈中红黄伟孙腾奎
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)