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Rock seam hole type oil deposit tracer-agent-injection injection-production model and manufacturing method and application thereof

A technology of tracer and rock fractures and caves, which is applied in earth-moving drilling, wellbore/well components, construction, etc., can solve the problems of high cost, difficult processing and forming, and far from the difference, and achieves easy operation and simple detection method. Easy to do, low cost effect

Inactive Publication Date: 2014-11-19
SOUTHWEST PETROLEUM UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a fracture-cavity oil reservoir injecting tracer injection-production model and its preparation method, aiming at solving the problem that the existing carbonate rock fracture-cavity model is far from the real situation, the cost is high, the processing Problems such as difficult molding and inconvenient experimental observation

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  • Rock seam hole type oil deposit tracer-agent-injection injection-production model and manufacturing method and application thereof
  • Rock seam hole type oil deposit tracer-agent-injection injection-production model and manufacturing method and application thereof
  • Rock seam hole type oil deposit tracer-agent-injection injection-production model and manufacturing method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0034] Embodiment 1 The preparation method of injection tracer injection-production model of fracture-cavity reservoir comprises the following steps:

[0035] (1) Select a certain size of carbonate rock and cut it into plates with length, width and thickness;

[0036] In step (1), the main component of the model material is CaCO 3 , can be high-purity marble or limestone or calcite, and carbonate rock cores obtained from drilling and coring. In addition, the size of the model can be large or small, and models with different connectivity properties can be made into a single injection-production well pair, or a collection of different connectivity types. In step (1), more specifically, select a white marble material with a calcium carbonate content>90%, and cut it into a regular plate with a length of 90 cm, a width of 60 cm and a thickness of 1.5 cm.

[0037] (2) On the surface of the carbonate rock plate, based on the distribution of fractures and caves on the seismic curvat...

Embodiment 2

[0041] Example 2 Experimental Evaluation of Tracer Injection in Fracture-vuggy Carbonate Reservoirs

[0042] In the embodiment of the present invention, such as Figure 4As shown, the tracer injection equipment includes: a 0.01-10ml / min micro constant speed pump 1; an intermediate container 2 with a capacity of 2000mL; a pressure gauge 3 (range 0.25MPa); pipeline (3m soft hose); sample testing equipment : UV-1800 ultraviolet spectrophotometer; sampling material: a batch of common medical blood collection tubes with a volume of 3ml; measuring cylinder 5. Among them, the constant-speed pump 1 , the intermediate container 2 , the pressure gauge 3 , the injection-production model 4 for injecting tracer in the fracture-cavity reservoir, and the measuring cylinder 5 are connected in sequence.

[0043] Tracer requirements: low background, high analytical sensitivity; sufficient chemical, biological and thermal stability under reservoir conditions; insoluble in formation crude oil, d...

Embodiment 3

[0064] Embodiment 3 Experimental result evaluation

[0065] According to the sample Br-absorbance value obtained by the assay, the bromide mass in the colorimetric tube is found on the calibration curve, and the corresponding KBr concentration (mass) is calculated according to formula 1.

[0066] C ( Br - ) = m / V - - - ( 1 )

[0067] In formula (1): - mass concentration of bromide in the water sample, mg / L;

[0068] m——The bromide content in the colorimetric tube checked from the calibration curve, μg;

[0069] V——the volume of the water sample taken, mL.

[0070] The measured absorbance and concentration of some samples are shown in Table 1 in Example 2 above.

[0071] According to the calculated sample concentration data, the trac...

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Abstract

The invention provides a rock seam hole type oil deposit tracer-agent-injection injection-production model and a manufacturing method and application of the rock seam hole type oil deposit tracer-agent-injection injection-production model. A carbonate rock is cut into a square plate, on the surface of the plate, the sizes of seam holes in the model are calculated according to a set proportional scale on the basis of the distribution condition of the seam holes on an actual oil deposit earthquake curvature graph, and the rock plate is etched to obtain cracks or caves. The two sides of the etched rock plate are respectively coated with adhesives and are then respectively covered with transparent organic glass, pressed and sealed, set screws are arranged on related portions, and the joints are coated with glue and sealed. Holes are drilled in different portions of the model according to the requirement for setting simulation well positions, valves are installed, different types of well position distribution of seam hole oil deposit is simulated, and then the rock seam hole type oil deposit tracer-agent-injection injection-production model is obtained. By means of the model, the test process of real seam hole oil deposit injection-production well network tracer agent injection can be well simulated, and guidance is provided for the research on the oil-water relation of seam hole oil deposit.

Description

technical field [0001] The invention belongs to the technical field of fracture-cavity reservoir evaluation, and in particular relates to a fracture-cavity reservoir injecting tracer injection-production model and a preparation method and application thereof. Background technique [0002] Whether the underground fracture-vuggy connectivity type and oil-water relationship can be clearly understood is one of the basic conditions for the efficient development of fractured-vuggy carbonate reservoirs. Carbonate fracture-vuggy reservoirs have strong heterogeneity, well-developed caves and fractures, and complex connectivity. Since the reservoirs are mostly hundreds to thousands of meters underground, people cannot directly observe the underground connection between wells in fractured-vuggy reservoirs. At present, the methods for studying the connection properties of fractured-vuggy reservoirs mainly include production dynamic data analysis, reservoir pressure system analysis and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/11E21B49/08
Inventor 李科星金发扬蒲万芬姜峰杨再广于洋
Owner SOUTHWEST PETROLEUM UNIV
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